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Nowadays nylon tubes was used on liquid and suction lines especially on moveable Standing Floor, Split Unit Air Conditioner and another Refrigeration Units. In this paper, an experimental study was carried out to know the effect of atmospheric temperature on the performance of Brine Cooling Unit using nylon tubes on liquid and suction lines. The atmospheric temperatures were 220C; 24,50C and 270C. The Brine Cooling Unit has a capacity of 1 HP and 10.000 Btuh cooling capacity, using R22, Propylene Glycol and capillary tube. The Nylon tubes was used in 3/8 inch suction line and in ¼ inch liquid line, equipped with fittings that were hydraulically pressed. The product was 300 cc of soy milk. The temperature of 30 liter brine was designed on – 60C and the soy milk on 40C. Thermostat was installed dipping into the brine. The internal dimension of the insulated brine tank was L32cm x W32cm x H42cm. The parameter data which were collected are: suction and discharge pressure, inlet evaporator and inlet expansion device temperature, suction and discharge temperature, brine temperature, outlet condenser temperature, product temperature, atmospheric temperature, current, voltage, cosφ. The result was that discharge and suction pressure and temperature, evaporator inlet temperature, brine chilling time, electrical current increases when the atmospheric temperature increases. But the COP decreases when the atmospheric temperature increases. So increase of the atmospheric temperature will increase the discharge and suction pressure and temperature, brine chilling time, electrical current and decrease the COP. [ABSTRACT FROM AUTHOR]

Friction lap welding (FLW) becomes increasingly popular as relevant technology for joining materials that are difficult to weld or even unweldable such as dissimilar materials. In this work, stainless steel (SS) AISI 304 and nylon 6 plates were joined by melt-filling of nylon to the previously prepared circular holes in SS plates through the tool friction along the clamped-material surface. The dual passes tool travel was conducted in a constant rotational and traverse speed of 2000 rpm and 20 mm/min respectively to accommodate the welding joint in the variation of hole diameter (4, 5, and 6 mm), tool diameter (10, 12, and 14 mm), and tool tilt angle (0, 2, and 4°). These process variations were carried out to investigate and optimize the joint shear strength using Taguchi method, and the contribution of each parameter was analyzed using ANOVA. The results indicated that the amount of heat generated during friction plays an important role to characterize the nylon pins resulted in SS holes and thus affects the shear strength. The optimum parameter combination was found at the hole diameter, tool diameter, and tilt angle of 4 mm, 14 mm, and 2° respectively. It is also clear that the tool tilt angle showed the highest contribution in determining the shear strength among others with 23.80 %. The robust design indicated the signal-to-noise (S/N) ratio value of 26.44 with the gain of 4.06 from its initial design. [ABSTRACT FROM AUTHOR]

The denture base is one of the components of the denture, which is used as a place for denture attachment, which can restore the facial contour of the user so that it looks aesthetically pleasing. Thermoplastic nylon is one of the most widely chosen and developed polymer denture base materials in dentistry because it has regular, tight, strong inter-chain bonds, is insoluble in solvents, is resistant to heat, and has high tensile strength due to its high tensile properties. The nature of thermoplastic nylon, which easily absorbs water, is feared to cause discoloration of the denture base due to the compound content in the liquid of Gayo Aceh Arabica coffee. This study was to determine the effect of Gayo Aceh coffee consumption on color stability on a denture base made of thermoplastic nylon. Type of research is an experimental laboratory with a pre-post-test design. The research samples were 8 which were printed in the form of discs with a diameter of 20 mm and a thickness of 2 mm, with a total sample of 4 samples per group. Group A was treated to soak in a solution of gayo aceh arabica coffee for 7 days, and group AR was treated to soak it in aquades solution for 7 days. Then, the sample was measured for changes in colour stability using spectrophotometry with the brand Shimadzu UV-2401, andthe results were tested for Shapiro-wilk normality, One Way ANOVA, and paired t-test. The results of the Shapiro-wilk normality test stated that the pre-test and post-test scores had a significant value (p>0.05). The result of OneWay Anova test showed p values = 0.770 and 0.121, which means that the variance of the pre-test and post-test group data is homogeneous. The results of the paired t-test analysis stated that the significant value was p = 0.038. There is an effect of Gayo Aceh coffee consumption on the colour stability of the denture base made of thermoplastic nylon. [ABSTRACT FROM AUTHOR]

This research aims to investigate the effect of varying surrounding conditions on the degradation of biobased polymers, specifically Nylon-1010. As Nylon-1010 is not biodegradable by itself, starch will be used as a filler or backbone to allow its degradation. The study will build upon existing literature in the field of biopolymer degradation. Previous research has primarily focused on investigating individual factors' influence on degradation, such as temperature or pH. Several studies have also examined the degradation behaviour of specific biopolymers, such as polylactic acid (PLA) or polyhydroxyalkanoates (PHA). However, there is a lack of comprehensive research exploring the combined effects of multiple surrounding conditions on the degradation of Nylon-1010. This study aims to bridge this gap by providing a broader understanding of the degradation process of a novel biopolymer and its dependence on surrounding conditions. This study seeks to fill this knowledge gap by examining the degradation rates of a starch/Nylon-1010 blend under various environmental factors. The study will be divided into the Background, Methods, Results and Conclusion. [ABSTRACT FROM AUTHOR]

The paper presents an academic example for direct internal electrical heating for nylon springs that act as springs with negative thermal expansion. Dynamics of such heating and cooling cycles will be also presented. Advantages and disadvantages of the proposed system will be discussed. [ABSTRACT FROM AUTHOR]

Nylon coil springs are thermally controlled linear actuators. They have a perspective application as artificial muscles. This article describes thermal experiments that were conducted on samples to determine thermal properties of these coiled springs. The experiments were performed in a temperature regulated environmental chamber. Measurements correctly shown negative value for the coefficient of apparent thermal expansion. Results of these experiments will be used to validate numerical models. [ABSTRACT FROM AUTHOR]

A new geometrically nonlinear nylon spring finite element with negative thermal coefficient (artificial muscle) is established in this article. This straight two-node finite element represents one spring in the initial unloaded state that is characterized by its initial measured parameters like the length, spring constant, compressive prestress and negative thermal coefficient. The unknown quantities are nodal displacements and internal axial nodal forces. Nodal loads are prescribed with mechanical and thermomechanical forces as well as prescribed displacements of nodal points. The geometrically nonlinearity (large elongations) of the Nylon Twisted Coiled Springs (NTCSs) is taken into account. This finite element is verified by the elastic and thermoelastostatic analysis of the selected NCTSs. The results of the analysis are verified by experimental measurements. A very good agreement between the computational and experimental results was achieved. [ABSTRACT FROM AUTHOR]

The sleeping posture affects not just the quality of a human's sleep, but also inculcates limb pain, neck pain, and back pain. And the sleeping posture degrades the quality of the bed utilized thus declining the lifetime of the bed. In this paper, the Ergonomic assessment of a human manikin in various sleeping postures in a foamless nylon stripped steel bed is discussed and the compression and elasticity factors of the bed without making it uncomfortable to the user is analyzed with the help of computer software such as DELMIA and Ansys. [ABSTRACT FROM AUTHOR]

This paper reports the preparationand tribological investigation of Nylon 6 (N6) reinforced with graphite (Gr) mixtures. The experiment samples were ready in an Injection moulding machine, by fluctuating the weight extents of Gr particles mixed with N6. The significant three boundaries were considered to gauge the wear of the composite materials like burden (P), speed (N) and weight % of support (w) and similar three cycle boundaries are considered to foster the Numerical models. The mathematical models were created by the Design of Experiment. A symmetrical cluster L16 (45) and Analysis of Variance are applied to investigated the impact of interaction boundaries on the sliding wear conduct of these composites. [ABSTRACT FROM AUTHOR]

The article presents an original mathematical model of a damper composed of nylon compressive prestressed springs, which are assembled in series-parallel. Based on the measurement of the mechanical properties of the applied springs, the optimal combination of springs can be determined by proposed mathematical model so that the damper can transmit the maximum possible amplitude of the dynamic force. Measurements of its functionality were performed on the physical prototype of the damper, and their results are compared with the calculated results. The nylon damper can be used for flexible storage of mechanical parts in small mobile systems such as children's scooters or car kits. [ABSTRACT FROM AUTHOR]

Nylon is the world's earliest synthetic fiber, it has excellent performance and rich raw material resource, so that it has been used until now. The purpose of this research is to investigate the acoustics of thin fabric. Acoustically, it can be seen as a thin layer composed of porous fibrous materials. Therefore, its sound absorption performance is the combination of at least two kinds of sound absorption mechanisms. The main purpose of this paper is to study the relationship between sound absorption properties and structural parameters of thin fabric by means of experiment. The study concerning the transmission and attenuation of acoustic wave in thin fabrics is helpful for the design of thin fabric, and improving its applications in the field of noise control and indoor acoustics. [ABSTRACT FROM AUTHOR]

Oceanic litters such as abandoned fishing nets endangers marine ecosystem. The nets, which consist of nylon, are mainly lost nets which occurs due to harsh weather or discarded by fishermen. Therefore, this study explores the potential usage of recyclable nylon fish nets as substitute polymer for fabrication of electrospun nanofiber membrane (NFM). Results show that nylon 6,6 waste NFM has relatively similar properties with the pure nylon 6,6 NFM. The nylon 6,6 waste NFM shows similar functional groups as the pure one with the fiber diameter around 171.00±80.00 nm and pore size of 0.2 µm. The contact angle is also found to be at 0° indicating the superhydrophilicity of the membrane. Besides, it is found that the hydraulic performance is much higher than the pure nylon 6,6 NFM (clean water permeability of 1133 L/m2.h.bar) where the waste NFM poses high permeabilities of 6000 L/m2.h.bar for clean water, respectively. Overall, it can be concluded that, nylon 6,6 waste is an excellent raw polymer substitute and highly feasible to be used for wastewater filtration, an approach that solve both the issue of waste nylon 6,6 and wastewater pollutions. [ABSTRACT FROM AUTHOR]

In Golf karts, wheel hub plays vital role in power transmission system. Researches are also done for optimizing the design from the perspective of weight reduction in order to make efficient kart. When it comes to battery life, as the weight of the whole vehicle reduces battery life increases. In this study, the wheel hub is redesigned and a new optimized design is presented along with changing the material to plastic/nylon. Usually, steel spokes, ductile iron, mild steel, cast iron are used for fabrication of such machine elements. In an attempt to reduce the overall weight of the wheel assembly, application of the Polypropylene as an alternative material has been investigated and presented herein. This would monitor the inertia as well as the work to accelerate or decelerate the electric kart. [ABSTRACT FROM AUTHOR]

In this study, Nylon 6 and SS AISI 304 were joined using friction lap welding (FLW) by filling the pre-hole in SS AISI 304 plate. The shear property and fracture morphology were analyzed using both experimental and numerical approaches. The pre-hole prepared SS AISI 304 plate was placed at the top of the Nylon 6 plate and constantly clamped together during the FLW process under traverse speeds of 10, 30, 50 mm/min with hole row distances of 20 and 24 mm. Afterward, the shear strength test was conducted using the MTS based on AWS D8.9-97 standard. The macroscopic fracture surface images were also provided to confirm the shear test result. The heat input is strongly determined by the shear properties of the joint, where the higher traverse speed shifts the shear strength to the lower level. On the other hand, hole row distance indicates the distance between each row to the respective heat source; therefore, the closer distance induces higher shear strength. This heat input showed a remarkable effect on determining the shear strength of the FLW joint, along with the stress concentration generated around nylon pins during shear loading, as confirmed by the simulation results. These phenomena are further demonstrated by the fracture and peel surface of the FLW joint, where the joint formed by higher heat input showed a larger brittle fracture area at the pin and deeper cleavage because of material loss moving to SS plate top surface. The shear strength value was inversely proportional to ductility. [ABSTRACT FROM AUTHOR]

In this work, samples of conductive textiles based on nylon and cotton with a surface layer of reduced graphene oxide were prepared and studied. The electrical resistance of the samples practically does not change with repeated cycles of bending and unbending, as well as after washing, which indicates the stability of the conductive coating. [ABSTRACT FROM AUTHOR]

The objective of this research is to design the layout and identify the suitable fabric for child seat on the modified pickup vehicle using low manufacturing process. The 1800D polyester covered by PVC (polyvinylchloride) and 420D nylon are selected to be candidate specimens because of affordable and abrasive conditions. To identify the strength and elongation, fabric specimens were tested with a tensile testing machine based on ASTM D5035-11 standard with strip method. As a result, the force responses of both fabrics can support Thai students from age of 6 to 14 years old with average of 33.7 kg weight. The specimens from polyester and nylon fabrics had different force responses in principal directions from standard fabric roll. But the specimens from polyester fabric were approximately the same in such directions. However, the experimental results can predict methods of textile production in knitting and woven techniques. Furthermore, the waft and warp densities with such techniques have influences on the force responses and elongation of fabrics. Therefore, the 1800D polyester covered by PVC is suitable candidate because of the knitting technique that can provide thicker and stronger fabrics in both principal and bias directions. [ABSTRACT FROM AUTHOR]

The importance of polymer gears is increasing continuously since its advent in 1950s and developing at a very fast pace due to some of its advantage over metallic gears like light weight, self-lubricating, low noise, etc. However, due to its low mechanical property and poor heat conduction, its failure mechanism is observed entirely different comparative to metallic gears. This article presents different behavior of failures which takes place in polymer gears viz. wear, thermal and fatigue failure. Review of different polymeric materials like Nylon, Acetal, etc. are reviewed here. It is observed that acetal gear fail due to wear while nylon gear fail due to fracture below the pitch line, nearer to the root. It is also observed that mechanical property and resistance to thermal deformation of composite nylon gear improves to a significant level. Influence of rotational speed up to 1200 rpm on life cycles of gear is found negligible up to the limit of bending stress of 15MPa. Whereas influence of rotational speed is found considerable above the bending stress of 20MPa and hence the mode of failure becomes plastic deformation. Based on the literature review it is observed that an asymmetric polymer gear is being preferred in specific operating conditions where there is a requirement of high load carrying capacity and in case of unidirectional transmission loading. Bending fatigue performance of polymer gear is found improved when its pressure angle on drive side is increased from 20° to 34° as in case of an asymmetric gear. [ABSTRACT FROM AUTHOR]

Poly(trimethylene terephthalate) (PTT), a partially biobased polymer, was blended with nylon 6 in order to develop a new bio-material. PTT and nylon 6 blends were prepared in a twin-screw extruder while varying the temperature and speed of melt mixing. The effects of the processing conditions on blend morphology were highlighted by scanning electron microscopy (SEM) and polarized optical microscopy (POM). Both the domain size and the density of nucleation are strongly influenced by the processing temperature. Differential scanning calorimetry (DSC) was used to measure the influence of the operatory conditions on the thermal stability of the crystals formed. [ABSTRACT FROM AUTHOR]

A new actuator, consisting of two nylon springs, is designed in a form of the von Mises truss system. The nylon spring (an artificial muscle) is produced by twisting of the nylon line. As a result of the twisting into the prestressed spring, a new microstructure of the fibre has been formed. The spring, after its mechanical elongation, exhibits a negative temperature expansion after its warming. This is the main advantage for the practical applications. The heating of the actuator is realized by the electric wire, which is wound on the nylon springs. Semi analytical and numerical methods are used for geometric non-linear thermo elastic analysis of the actuator to obtain its deformation caused by the electro-thermo-mechanical loads. The calculated results are verified by the measurement on the real model. A very god agreement of both the results is obtained [ABSTRACT FROM AUTHOR]

The effect of screw configurations in melt conveying section on PA6/LDPE blends and casting film was studied and the arrangement form and types of distributive mixing and dispersive mixing elements were considered. Compared with the screw configurations for concentrated arrangement, the blends prepared by screw configurations for staggered arrangement had better property through experiment study, and the results were consistent with the theory analysis. The blends and casting film prepared by the screw configuration of SPE+KB had best property. The mechanical properties of PA6/LDPE blends agreed well with that of casting film. The screw configurations for staggered arrangement which had uniform shear and backflow capacity were more suitable for preparing film with excellent property. [ABSTRACT FROM AUTHOR]

Ankle-foot orthoses (AFO) were well-used for stroke patients. Our study developed a new 3D printed AFO with the function of Energy Storage. It would be expected to improve the gait of the stroke patients. This study made a 3D printed joint part fixed between the foot plate and shank structure of AFO. The joint part was made of Nylon and inserted a steel plate to increase the strength against the inversion motion of foot. The potential energy from the dorsiflexion of ankle could be saved in the joint part and released in the pre-swing phase of the gait cycle to help walking. Due to the local health insurance policy patients can replace a new AFO every three months. The life of 3D printed AFO which was used in the condition of 2000 steps one day should last at least 3 months. Therefore this study tested the life of 3D printed AFO using the material test machine. The reciprocating motion of 3D printed AFO was limited in the range of 3 degree of plantarflexion and 10 degree of dorsiflexion. The results showed the shank structure broke in the clamping site of the jig after 144000 times of bending. The broken part showed the separating direction was not in the depositing direction of 3D printing path. It means the printing pattern of every layer is also a key issue for the strength of 3D printed object. In the future, this study will check the strength of 3D printed samples with different printing patterns and redesign the shank structure for the better life. [ABSTRACT FROM AUTHOR]

The results of measurement of the eigefrequencies of the nylon actuators are presented considered free and damped eigenvibration. An analytical and numerical elastostatic and modal analyses of the nylon actuators are done and their results are compared with the measured ones. In numerical analysis, the finite element method is used. [ABSTRACT FROM AUTHOR]

Applying integrated system, product quality and production process are important on both manufacturing organization and service organization efficiently and productively. One of improving quality method mostly used in industry around the world is six sigma. This method concerns on significantly improvement in which costumers' demands are considered as quality improvement ways in the company. The most determining factors to improve process quality from six sigma method consist of five stages such as DMAIC method (Define Measure, Analyse, Improve, and Control). DPMO and Sigma Quality Level score for Nylon Filament Yarn production process on July 2014 was 14875 and its sigma was 3.72 and in the yield process level on July 2014 was 92.1%. [ABSTRACT FROM AUTHOR]

Adaptation of the additive manufacturing technology with 3D printers may lead to a new track in the manufacturing of composite materials. This additive manufacturing technology aims to mitigate manufacturing challenges and related design limitations of traditional composite manufacturing methods. The implementation of 3D printing of composite materials has the potential of decreasing the material cost by developing scientific methodologies to understand and optimize this printing process. This study focuses on understanding the flexural behavior of 3D printed composite beam elements and providing material data of both matrix and reinforcement components of composite materials. In this study, the flexural performance at different thermal conditions is experimentally investigated. This investigation involves the effect of the matrix material with and without short-fiber reinforcements for a specified fiber placement in the beam and fiber filaments placement in compression and tension sides of the composite beam elements along with the ambient temperature change. [ABSTRACT FROM AUTHOR]

Rubber fabric coated is a unique rubber-textile composite, in which technical textile acts as reinforcing material and strength providing material. In rubber textile composite, rubber to fabric adhesion plays the most critical role for determining assembly process and ultimate strength of product. A vulcanisable adhesive for rubber to fabric fabrication of composite material was developed which compatible with rubber as well as fabric. Evaluation of bonding system with respect to peel strength, shear adhesion strength and weave pattern of fabrics were the major determining criteria for selection and optimization of fabric for rubber hose application. Thus adhesive Cohedure with characteristics of high adhesive strength in Natural Rubber Polyester Fabric compound has been developed. [ABSTRACT FROM AUTHOR]

Pressure driven membrane processes have been proven suitable for the separation of microorganisms in many of biotechnical applications. In this paper, we report the preparation and characterization of a novel nylon 6, 6 nanofibers membranes and applied it for filtration of Chlorella vulgaris broth. Its performance is compared with a phase inverted polyvinylidene fluoride (PVDF) membrane, an established membrane material for this application. The tests on the filterability of both membranes and their harvesting efficiency were conducted. Results show that nanofiber membrane is more hydrophilic (contact angle of zero), and has 45% higher surface pore size and 20% surface pore population that contribute significantly into its higher clean water permeability (of 1018 and 493 l/m2hbar for nanofiber and PVDF membranes respectively). Filterability results show that nanofiber membrane has superior advantages over the phase inverted one: 2-5 times higher in productivity while maintaining similar rejection of 92%. Those results were consistent for three independent filterability tests. This finding confirms the potential application of nanofiber membrane. However, further development with respect to improving its mechanical strength and its ability to be assembled into a membrane module should be critical to serve its promise in this particular application. [ABSTRACT FROM AUTHOR]

This research is all about injection moulding process in determination of the optimum processing parameters used for manufacturing side arms of catheters in minimizing the warpage issues. The optimization method used was the RSM. Moreover, in this research tries to find the most significant factor affecting the warpage. From the literature review,5 most significant parameters on warpage defect was selected. Those parameters were melt temperature, packing time, packing pressure, mould temperature melt temperature. At the beginning, side arm was drawn using software of CATIA V5. Then, software Mouldflow and Design Expert were employed to analyses on the popular warpage issues. Recommended parameter settings from the simulation work were then comparing with the optimization work of RSM. The result show that the warpage on the side arm was improved by 5.46 % [ABSTRACT FROM AUTHOR]

This paper describes the development of nylon-based artificial muscles that is intended to be used in prosthetic limb for young amputees. Prosthetic limbs are very expensive and this situation is further compounded for young amputees who are very quickly out-grow their prosthesis. The proposed artificial muscles are made of nylon fishing strings from various size such as 0.45mm, 0.55mm, 0.65mm and 1.00mm. These fishing strings were twisted into coils to create Super Coiled Polymers (SCP) and tested using hot air blower. These artificial muscles react counterintuitively, where when it is exposed to heat, contracts, and when cooled, expands. Peltier devices, when switched-on acts as heat pump, where one side is hot and the other is cold. This phenomenon, when affixed in between 2 SCP's, creates tandem motion similar to triceps and biceps. As initial study, the hot side of the Peltier module was tested using these artificial muscles. The string was measured for both its force production, length contraction, the initial results were promising. [ABSTRACT FROM AUTHOR]

Fused Deposition Modelling (FDM) is one of the leading additive manufacturing processes for plastic part manufacturing. However, engineers often face difficulties to specify the actual levels of process parameters in FDM process to achieve the proper mechanical properties of FDM fabricated parts. The effect of large number of FDM process parameters and the interaction among them need to be understood to achieve desired level of mechanical performance. This paper presents a study on the influence of three FDM process parameters (air gap, raster angle, and build orientation) on the impact strength and mechanical properties of the FDM Nylon 12 fabricated parts by Fortus 450mc FDM machine. The Response Surface Methodology (RSM) based on face centered central composite design was used to analyse, validate, and optimize the results. The significance of parameters was statistically validated with the analysis of variance (ANOVA) technique. The results show that the part build Y-orientations (flat) at 0° and 45° have a significant directly proportional influence on the impact strength, while Z-orientation (upright) at 90° has indirectly proportional effect on the impact strength. Moreover, raster angle has a much significant directly proportional influence on the impact strength at 0° and 60° angles and indirectly proportion influence at 30°. [ABSTRACT FROM AUTHOR]

Two terminal Organic memories in passive matrix array form with device structure, Al/Nylon/ (Nylon+C60)/Nylon/ Al are fabricated. The current-voltage measurements showed hysteresis and the devices are thoroughly characterized for write-read-erase-read cycles. The control over the dispersion concentration, capacity of fullerene to readily accept electrons and the constant diameter of fullerene made possible uniform device fabrication with reproducible results. Scanning electron micrographs indicated that the device thickness remained uniform in the range of 19 micrometers. [ABSTRACT FROM AUTHOR]

This article explores the influence of production technique on the strength of nylon parts. Identical specimens were manufactured by various techniques. The material of specimens was nylon PA6. 3D printing and injection molding were used, with various orientations of printed layers, and various orientations of specimens in the working space of the 3D printer. The variants are described in detail. A special mold was used for the injection molding process in order to make specimens with and without a weld line. The effect of this weld line was evaluated. All specimens were tested using the standard tensile test configuration. The strength was compared. It was found that the same plastic material has very different mechanical properties depending on the production process. [ABSTRACT FROM AUTHOR]

Experiment has been conducted to study the flame spread behaviour over combined fabric of cotton/polyester and cotton/nylon. Samples are ignited from the top edge and spread to the downward direction. Experiment is conducted for several weft trade angles from 0° to 90°. For θ = 0°, a significant difference is seen between these two combined fabrics in the shape of burning front. However, the shape of the burning front is the same for both fabrics at θ = 90°. It is seen that the shrinking behaviour is different between polyester and nylon thread. The flame spread rate is measured, which is obtained from the position of the most preceding point of the burning front at each time, at different weft thread angle for both fabrics. It is found that both fabrics have similar angle dependency; the flame spread rate decreases as the angle increases. [ABSTRACT FROM AUTHOR]

Elimination of the methylene orange which are the main sources of environmental pollution from aqueous media were investigated experimentally by using 0.45 μm hydrophilic nylon membran. Removal of the methylene orange were performed with successfully. Furthermore, repetition effect also was examined rationally. With this study, membrane usage for elimination of the methylene orange are convenient for elimination of them from the aqueous media. [ABSTRACT FROM AUTHOR]

Elimination of the methylene orange which are the main sources of environmental pollution from aqueous media were investigated experimentally by using 0.45 μm hydrophilic nylon membran. Removal of the methylene orange were performed with successfully. Furthermore, repetition effect also was examined rationally. With this study, membrane usage for elimination of the methylene orange are convenient for elimination of them from the aqueous media. [ABSTRACT FROM AUTHOR]

Retort Pouch had become a choice to preserve foods nowadays, besides the used of the can. Both had their own advantages, and Retort Pouch became more popular for the reason of cheaper and easier to recycle. General Method usually used to estimate the lethality of commercial heat sterilization process. Lethality value was used for evaluating the efficacy of the thermal process. This study aimed to find whether different layers of pouch materials affect the lethality value and to find differences lethality in two types of multilayer retort pouch, PET/Aluminum Foil/Nylon/RCPP and PET/Nylon/Modified Aluminum/CPP. The result showed that the different layer arrangement was resulted different Sterilization Value (SV). PET/Nylon/Modified Aluminum/CPP had better heat penetration, implied by the higher value of lethality. PET/Nylon/Modified Aluminum/CPP had the lethality value of 6,24 minutes, whereas the lethality value of PET/Aluminum Foil/Nylon/RCPP was 3,54 minutes. [ABSTRACT FROM AUTHOR]

Nylon 6 microfiltration membrane, for the treatment of brewery wastewater, was fabricated using an electrospinning technique, followed by hot-pressing. The fabricated membrane was robust and demonstrated highly hydrophilic property (water contact angle 39° at the touching point to the membrane surface and the water droplet was completely immersed into the membrane in 7 seconds), and higher porosity (65%) with pore sizes of 100 to 210 nm. The electrospun nylon 6 membrane showed higher pure water flux (850 LMH) at an applied pressure of 4 psi. The same membrane also demonstrated a 95% rejection rate of suspended solids (SS) in brewery wastewater treatment. [ABSTRACT FROM AUTHOR]

The dependency of the radon penetration through a nylon foil on air humidity was measured. Such information is needed for the tracking part of the SuperNEMO detector, which is planned to be shielded against radon by nylon foil and in which the air humidity is not negligible. The long term measurements of radon penetration through nylon foils for different air humidities were performed with the radon diffusion setup constructed at the IEAP, CTU in Prague. The setup consists of two stainless steel hemispheres with Si detector in each of them. Both hemispheres are separated by the tested foil. While the left hemisphere contains high Rn activity, the right part contains only activity caused by the radon penetration through the tested foil. Obtained results of this study with a nylon foil with the thickness of 50 µm are presented. [ABSTRACT FROM AUTHOR]

Nylon 6 films are doped using SbCl5. The structural analyses of the pristine and doped materials are carried out by FTIR spectroscopy. The optical band gap of these films are evaluated from UV-visible absorption studies. The absorption band of nylon SbCl5 complex films has extended to the visible and near infrared region of the spectrum. There are discernible shifts found in the energy gap towards lower energies on doping. The structural changes on doping indicates polar addition of SbCl5 to the polymer segments causing a double bond shift reaction accompanied by the formation of charge transfer complexes. [ABSTRACT FROM AUTHOR]

Laser Sintering is a powder based additive manufacturing technology. The amount of used powder, which is not sintered, can be refreshed and used for further building jobs. Due to cost reduction, better mechanical properties and a simpler processing it is reasonable to combine virgin and used powder for part manufacturing. During the building time the powder is thermally loaded and its structure is changed. State of the art in laser sintering is a defined powder ratio. Since the powder ageing depends on the individual history of sintering, this procedure cannot ensure a defined powder quality. However, for a serial production it is necessary to characterize the raw material, as well as all other steps along the process chain, in order to ensure a high reproducibility and reliability. Rheological, physical and particle properties are considered to correlate powder and chosen material properties. Different powder qualities adjusted by the Melt Volume Rate (MVR) are tested using promising rheological properties like viscosity or molecular weight. Investigations about powder bed density, bulk properties as well as thermal characterization complement the experimental setup. These parameters are correlated with mechanical, electrical, thermal and physical material properties of laser sintered parts. The most important influencing factors along the process chain are kept constant. At the end a procedure is shown to obtain a defined powder quality. This procedure will be transferred to other materials and will be tested using other laser sintering machines of the same type as well as other types. [ABSTRACT FROM AUTHOR]

Several charts and graphs are presented which shows how the capacity explosion of polyester and nylon impacts growth prospects are presented, which will be the focus of the International Textile Manufacturers Federation (ITMF) Annual Conference, 2014 to be held in Beijing, China.

It is aimed to progress the healing characteristics and to increase the effectiveness and functions of pressure garments to burn scar treatments by providing infection protection. In this study, three different highly elastane nylon/spandex warp and weft knitted fabrics, used for burn pressure garments, were treated with an antimicrobial Triclosan using exhaustion method. Antimicrobial activity, wash durabilities, FTIR and SEM analysis were conducted for the treated samples. The pressures were measured by using wireless pressure sensors in order to evaluate the pressures exerted by these garments before and after treatment. The results showed that satisfying durable antimicrobial activity up to 50 launderings was obtained with Triclosan antimicrobial agent procedures by controlling the pressures in an acceptable optimal medical range. This will help to provide a hygienic environment during wound healing stage by eliminating allergic reactions which will help to prevent the risk of infection. [ABSTRACT FROM AUTHOR]

In this study, a non-thermal, high density atmospheric pressure plasma was used to improve antistatic properties of nylon 6,6 fabrics. Nylon 6,6 fabrics were first treated with He plasma and then treated with diallyldimethylammonium chloride (DADMAC) monomer and a crosslinker di(ethylene glycol) diacrylate solution. Fabrics were then treated with He plasma to graft polymerize the monomer on the fiber surface. Surface resistivities, electrostatic charge generation/dissipation of fabrics were measured before and after soxhlet extraction with water and after washing. UV-Vis, Scanning Electron Microscopy (SEM) analyses were carried on fabrics to confirm the graft polymerization. Results showed that the nano-layer coating is still present after extraction and after washing the fabric keeps major amount of it. [ABSTRACT FROM AUTHOR]