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Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Automobile Technology & Material is the property of Automobile Technology & Material Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In the plastic design and development of PLC controllers, the key is to control the flatness and deviation of the installation hole axis. The article uses simulation technology to calculate the flatness and axis deviation of the PLC controller after injection molding, and designs orthogonal tests to explore the influence of process parameters and optimization schemes. The orthogonal test results indicate that the maximum values of the flatness and axis deviation of the PLC controller under different combinations of process parameters are 2.5 times and 1.8 times of the minimum values, respectively, indicating that the influence of process parameters is significant. Taking into account the flatness or axis deviation, the optimal process parameter is A2B2C3D1. The simulation results of the optimized process show that the shrinkage estimation and gas cavity on the main appearance surface meet the requirements, and the injection pressure and clamping force are also within the normal range, verifying the feasibility of the optimized process. [ABSTRACT FROM AUTHOR]

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

To address the challenge of balancing load-bearing and electromagnetic (EM) wave absorption properties in aircraft composite skin, the outstanding mechanical and electrical characteristics of carbon fiber (CF) prepregs were utilized to construct a carbon fiber dual-polarized absorbing laminated structure (CFDALS). The bidirectional CF arrays were introduced into the glass fiber (GF) laminated structure, to endow the laminated structure with dual-polarized EM wave absorption performances. Additionally, the excellent load-bearing capacity of the CF reflector was used to enhance the mechanical properties. Simulation results indicate that, the CFDALS achieves an average absorptivity over 90% within the 8~18 GHz frequency band at incident angles of 0°~45°, and within the 5~18 GHz band at incident angles of 0°~60° for TE and TM polarized EM waves, respectively. The 3-point bending simulation results show that, the CFDALS exhibits higher specific flexural strengths and stiffnesses along 2 directions of the CF arrays while achieving dual-polarized EM wave absorption. Incorporation of bidirectionally arranged CF prepregs into GF prepregs enhances the dual-polarized EM wave absorption performance and the bidirectional flexural performance of the CFDALS simultaneously. The work provides a novel solution for the EM wave absorbing and load-bearing integrated design for aircraft composite skin applications. [ABSTRACT FROM AUTHOR]

In view of the serious problem of recycling and insolubility of thermosetting resin matrix composites in automobile manufacturing, a curing agent containing dynamic imine bond was synthesized by using biovanillin and 4, 4-diaminophenylsulfone. It was further used to cure epoxy resins into a vitreous matrix for fiberglass composite that could be reprocessed and recycled. The composite shows excellent mechanical properties, with a tensile strength and modulus of 670 MPa and 29 GPa, flexural strength and modulus of 752 MPa and 27 GPa, and shear strength of 55 MPa, which are comparable to the commercial battery pack composite material such as BAC 449. This new vitrimer-based composite has better mechanical properties, and its flame retardant can reach UL-94 V-0 level. In addition, owing to the nature of dynamic imine bonds, this vitrimer-based composite can be chemically degraded so that the fiber and resin in the composite can be recycled and reused, helping with carbon reduction and environmental protection. It has potential application in the manufacturing of composite covers of battery packs for electric vehicles. [ABSTRACT FROM AUTHOR]

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of West China Journal of Stomatology is the property of Sichuan University, West China College of Stomatology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to solve the technical problems of the super-diameter slurry shield in the waterinrush, sand-bursting and mud-bursting strata at the entrance of the receiving tunnel in the water-rich silt and sand strata near the sea, the differences between the super-diameter and the small-diameter shield in the underwater reception are analyzed by taking the key receiving technology of the super-diameter slurry shield in the water-rich strata of the Shantou Bay Tunnel Project as an example. Based on the receiving process of super-large diameter shield, this paper expounds the solution methods of super-large diameter slurry shield in the aspects of end reinforcement, receiving shaft plugging wall construction, receiving base construction, single-layer glass fiber reinforced concrete tunnel door breaking, penetration measurement, receiving tunneling and grouting, tunnel door plugging, etc., including shield posture control, tunneling parameter control, grouting control, segment re-tightening The key technologies of the super-large diameter shield receiving are analyzed from several aspects of the temporary plugging of the tunnel portal. The mortar receiving base is set to provide sufficient reaction force for the shield receiving to ensure the safety of the shield tunneling. The synchronous grouting and secondary grouting closing is employed to improve the reinforcement quality, strengthen the segment re-tightening and ensure the stability of the shield tunnel structure strength. For the last five rings, special perforated ring segments are used to improve the grouting effect. Then, the drainage and sand removal is carried out, and the reinforcement framework and shotcrete are constructed from top to bottom to block the tunnel door, reduce the exposure time of the tunnel door without blocking, ensure the construction safety of the tunnel door, and other measures are taken to ensure the safety of the underwater reception. [ABSTRACT FROM AUTHOR]

The laminate was manufactured with T800 grade high toughness carbon cloth and carbon ribbon prepreg, T800 grade glass fiber prepreg, aramidon and quartz hybrid prepreg. The influence of high temperature and high pressure multiple curing on the mechanical properties of laminates was investigated. After five times of high temperature and high pressure curing, the laminate pore defects, bending strength and shear strength were tested. The results show that the internal quality of four different prepreg laminates is qualified. With the increase of curing times, the bending strength of T800 grade high toughness carbon cloth laminate decreases most obviously, and the shear strength of T800 grade glass fiber prepreg laminate decreases most obviously. However, the bending strength and shear strength of the four kinds of prepreg laminates decrease by less than 10%. The minimum shear strength of aramid and quartz hybrid prepreg after curing for five times is 1.64% lower than the theoretical index, and the shear strength of other materials is higher than the property requirements of each laminate. [ABSTRACT FROM AUTHOR]

Based on the integral equations of internal strain fields in elastic bodies containing inclusions, the deformation coordination tensor of inclusions in three-phase composites is derived. Compared with the traditional Mori-Tanaka method (M-T method), the deformation coordination tensor takes into account the distribution characteristics and interactions of inclusions from the perspective of micromechanics, leading to a modified M-T method for predicting the effective elastic properties of composites. Combining with the two-step homogenization model, a method for predicting the effective performance of hybrid fiber composites is derived. Additionally, a prediction model for the tensile strength of hybrid fiber composites is established based on the damage mechanics theory. This method is used to predict the effective elastic properties and tensile strength for coconut husk fiber/glass fiber reinforced phenolic resin composites reported in the literature, and compared the predicted results with experimental data. The results show that the proposed modified M-T method has better predictive ability than the traditional M-T method, with the predicted results and experimental data differing by less than 10.485%. The method is used to quantitatively analyze the effect of the content of coconut husk fiber and glass fiber on the effective elastic properties and tensile strength of hybrid fiber composites. The results show that the effective elastic properties and tensile strength of hybrid fiber composites increase with the increase of glass fiber content. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Ceramics / Taoci Xuebao is the property of Journal of Ceramics Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Aeronautical Materials is the property of Editorial Board of Journal of Aeronautical Materials and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Polystyrene composites were prepared by blending nano glass fibers with polystyrene, and the effects of nano glass fiber content on the mechanical and thermal insulation properties of polystyrene composites were investigated. The results show that the addition of nano glass fibers effectively improve the mechanical properties, flame retardancy, and insulation properties of polystyrene composites. By appropriately increasing the content of nano glass fibers, the mechanical properties, flame retardancy, thermal insulation of polystyrene composites can be effectively improved, while enhancing their degradability. When the mass fraction of nano glass fibers is 20%, the compressive strength and notch impact strength of polystyrene composites increase by 57.26% and 17.43%, respectively, compared to pure polystyrene, and the limited oxygen index (LOI) value increases by 48.07%. [ABSTRACT FROM AUTHOR]

Copyright of Plastics Science & Technology / Suliao Ke-Ji is the property of Plastics Science & Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Pallet is an important tool in transportation, and its production raw materials show a diversified development trend. In order to design the structure of discarded glass fiber reinforced plastic (GFRP) pallets, a static analysis was performed using ABAQUS. The pallet's structural parameters were used as variables, while the pallet mass and maximum stress were set as optimization objectives. An optimization experiment using DOE with ISIGHT was conducted to obtain a locally optimal solution. The DOE experimental results were fitted using a RBF model to obtain an approximate model. By applying the NSGA-II algorithm, the approximate model can be further optimized to achieve the optimal structure. The results showed that after optimizing through DOE, the pallet's mass increased by 9.2% and maximum stress decreased by 18.2%. Furthermore, after further optimization using the NSGA-II algorithm, the pallet's mass decreased by 1.2% and maximum stress decreased by 15.3%. Optimised design of the pallet structure was achieved. [ABSTRACT FROM AUTHOR]

In the context of the difficulty of high-value recycling and treatment of thermoset composite waste, thermoplastic composites have a tendency to replace thermosetting composites, and exploring the thermal degradation mechanism of thermoplastic composites is conducive to guiding the use of thermoplastic composites under different working conditions and the subsequent recycling and degradation. The thermal degradation behavior of polyacrylic acid thermoplastic resin (RE) and thermoplastic resin glass fiber composites (RE-FRP) under different heating rates was compared and studied by a thermogravimetric analyzer under nitrogen atmosphere. The results show that the temperature of RE-FRP composites is higher than that of RE pure thermoplastic resin when the thermal degradation rate reaches the maximum. The activation energy of thermal degradation of the RE system measured by the Kissinger method was 196.76 kJ/mol, which was 232.91 kJ/mol less than that of the RE-FRP system. The Flynn-Wall-Ozawa method was used to calculate the activation energy, the apparent activation energy of the degradation reaction of the RE pure resin system fluctuated little with the change of degradation degree, the degradation reaction mechanism was simple, while the apparent activation energy of the RE-FRP system increased with the increase of degradation degree, and the degradation reaction had a more complex mechanism. The study shows that the thermal stability of RE-FRP thermoplastic resin is improved by combining with glass fiber. [ABSTRACT FROM AUTHOR]

The surface treatment of chopped glass fiber (GF) can significantly improve the strength, impact resistance, and durability of epoxy resin (EP), and the homogeneity of GF modified EP material is better than that of continuous fiber reinforced EP, which has an important application in the engineering field. The effects of surface treatment and addition of chopped GF on the rheological behavior and mechanical properties of EP/modified chopped GF composites were studied by alcohol washing, coupling agent treatment, and acid etching modification methods. In addition, a reactive flame retardant containing phosphorus, nitrogen and bromine was synthesized, and the flame retardant application was studied in the EP/modified chopped GF system. The results show that the surface micromorphology of the chopped GF treated with acid etching is relatively rough, which can greatly increase the initial shear viscosity of the system, and the mechanical properties of the cured composites are significantly better than those of the GF treated with alcohol treatment and coupling agent. The chopped GF content of acid etching treatment is 2.0%, and the tensile strength of the composite is the highest, which is 59.75 MPa. When the flame retardant content is 10%, the peak heat release rate and total heat release of the composite are significantly lower than those of pure EP, and the mechanical properties are improved at the same time. [ABSTRACT FROM AUTHOR]

Wind energy is an important clean energy, according to China's carbon peak and carbon neutral strategy, the policy of replacing small with large wind turbine blades and replacing old with new is imperative. The main material of wind turbine blades is glass fiber reinforced polymer, which has problems of difficult recycling technology and high recycling cost. Nowadays, there is no ideal large-scale recycling method. Therefore, the systematic and high-value utilization of waste wind turbine blades is imminent. In this paper, the material type, recycling methods and their respective characteristics of wind turbine blades are summarized. The recent developments of waste wind turbine blades in cement-based materials and thermoplastic polymer materials are thoroughly discussed. Overall, this paper can provide reference for the subsequent development and research on the recycling waste wind turbine blades. [ABSTRACT FROM AUTHOR]

The injection molding process of an automobile front-end frame was simulated, and the optimization of process parameter combination was explored with the goal of maximizing all effects deformation. Aiming at the problem of large deformation of the maximum all effects under the initial process, the orthogonal test was designed and the range and variance analysis were carried out. The results show that the injection time has the greatest influence on the deformation of the part, which is extremely significant. The influence of the surface temperature of the die cavity and the barrel temperature on the deformation of the part is significant. The influence of the filling volume percentage of the speed pressure switching on the deformation of the part is not significant, and the optimal process parameter combination is A2B2C2D3. The simulation results of the optimized process show that the maximum deformation of all effects is reduced to 2.949 mm, and the optimization range is large and meets the index requirements. The optimized process is used to test the mold. The trial sample is in good condition and the deformation amount meets the requirements, which verifies the rationality of the optimization scheme. [ABSTRACT FROM AUTHOR]

Binary copolymerized semi-aromatic polyamide (PA6T/66) is a kind of polymer material with low cost, high rigidity and mature process, but it has poor toughness and certain water absorption. PA6T/10T/66 resin was prepared by melt polymerization and micro-negative pressure viscosity enhancement by introducing high temperature resistant polyterephthaloyl decanediamine (PA10T) segment of aliphatic long carbon chain with low water absorption into PA6T/66 resin. The results show that the optimum amount of PA10T salt is 5% when preparing PA6T/10T/66 resin. Infrared spectra shows that PA6T/10T/66(45/5/50) resin is completely polymerized. The melting point of PA6T/10T/66(45/5/50) resin is 300 °C by differential scanning calorimeter (DSC). When the viscosity of the resin is 2.5, the tensile strength is 50 MPa and the flexural strength is 54 MPa. When the polymerization pressure is 2.35 MPa and the amount of end capping agent is 1.5% of the total salt mass, the viscosity of the resin meets the application requirements. This process has low cost and simple preparation process, and the obtained ternary copolymer resin is suitable for glass fiber modification, color matching, injection molding and other applications. [ABSTRACT FROM AUTHOR]

The new lightweight gypsum hollow board is made of calcined gypsum and glass fibre, also known as "glass fibre reinforced gypsum hollow board". With large size, thin hole wall and light weight per unit area, it can be used to build all kinds of public and residential interior and exterior walls, ceilings, roofs and rib beams and panels. Its production process is novel and unique, the production technology and equipment is simple, the products are prefabricated in the factory, investment saving, in line with the development direction of building assembly. [ABSTRACT FROM AUTHOR]

Copyright of Polymer Materials Science & Engineering is the property of Sichuan University, Polymer Research Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Plastics / Zhongguo Suliao is the property of Journal Office of CHINA PLASTICS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Aimed to expand applications of aramid fiber fabrics and provide a reference for select fibers for filter bags using in high temperature flue gas filtration, properties such as filtration performance, temperature resistance, wear resistance, folding endurance, corrosion resistance and flame retardance of aramid fibre needle punched nonwoven fabrics were measured, in comparison with polyimide fiber needle punched nonwoven fabrics and glass fiber woven fabrics. It is found that aramid fiber fabric exhibits excellent temperature resistance. The tensile strength remains unchanged after thermal treatment under 220 °C for 24 hours. The folding endurance and corrosion resistance are excellent. The filtration performance of fabrics composited with 1 D aramid fibers is excellent while its flame retardance and wear resistance should be improved by PTFE emulsion impregnation. [ABSTRACT FROM AUTHOR]

Copyright of Fly Ash Comprehensive Utilization is the property of Hebei Fly Ash Comprehensive Utilization Magazine Co., Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Fly Ash Comprehensive Utilization is the property of Hebei Fly Ash Comprehensive Utilization Magazine Co., Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Plastics Science & Technology / Suliao Ke-Ji is the property of Plastics Science & Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Plastics Science & Technology / Suliao Ke-Ji is the property of Plastics Science & Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Corrosion & Protection in Petrochemical Industry is the property of Corrosion & Protection in Petrochemical Industry Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Electroplating & Finishing is the property of Electroplating & Finishing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Donghua University (Natural Science Edition) is the property of Journal of Donghua University (Natural Science) Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Rolling Stock (1002-7602) is the property of Rolling Stock Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of High Pressure Physics is the property of Chinese Journal of High Pressure Physics Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Automobile Technology & Material is the property of Automobile Technology & Material Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Plastics / Zhongguo Suliao is the property of Journal Office of CHINA PLASTICS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Based on computer aided engineering, the injection molding process of BMS control box of glass fiber reinforced PBT material was simulated, and the process parameters of the flatness of the screw column end face were optimized by orthogonal test. The results show that the injection time has the greatest influence on the flatness of the end face of the screw column, and the melt temperature has the least influence on the flatness. The optimized process to minimize the flatness of the screw end face is A3B2C3D2. Under the optimized process, the flatness of the end face of the screw column is reduced to 0.451 7 mm, and the optimization rate is 50.3%, which meets the design requirements. The simulation results of filling process, weld line and sink mark and the test results of sample all meet requirements, which verifies the rationality of the optimized process. [ABSTRACT FROM AUTHOR]

The injection molding process of a low-pressure connector was simulated and the optimization scheme of process parameters was explored. Based on the analysis of single point feeding scheme, the best gate position is obtained, and the hot runner system is established. Aiming at the problem that the maximum axial concentricity of the mounting hole exceeds the standard under the initial process conditions, an orthogonal test was designed to obtain the influence law of the process parameters. The results show that the optimized process parameter combination is A3B2C3D3E1F3. Through process optimization, the maximum axial concentricity of the low-voltage connector mounting hole is reduced by 35.2% and meets the target requirements. The availability of the optimized process is verified by simulation, actual test and installation test. [ABSTRACT FROM AUTHOR]

Glass fiber (GF) was modified by KH-550 to improve the compatibility between GF and epoxy resin (EP) matrix, and glass fiber reinforced epoxy resin composites (EP/GF) were prepared. The effects of GF content on the insulation and mechanical properties of EP/GF composites were studied. The results show that GF can be uniformly dispersed in EP when the content of GF does not exceed 30%. When the content of GF reaches 40%, GF agglomerates, and the EP matrix produces defects such as pores. When the content of GF is 30%, the insulation performance and comprehensive mechanical properties of EP/GF composites were the best. Compared with pure EP, the volume resistivity of the composites is increased by 36.9%, the relative dielectric constant ( εr) and dielectric loss factor (tan δ) are decreased by 11.4% and 8.9%, respectively. The short-term AC breakdown voltage value is increased by 27.8%, the bending strength is increased by 38.2%, the impact strength is increased by 40.0%, the tensile strength is increased by 40.4%, the elongation at break is decreased by 11.1%, and the hardness is increased by 5.9%. [ABSTRACT FROM AUTHOR]

Copyright of Bulletin of the Chinese Ceramic Society is the property of Bulletin of the Chinese Ceramic Society Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Automobile Technology & Material is the property of Automobile Technology & Material Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Glass fiber reinforced polypropylene composite fiber was prepared by the experimental schemes of adding different mass fractions of glass fiber (reinforcing agent) and polypropylene grafting maleic anhydride (compatible agent), and modifying glass fiber surface and taking different spinning speeds. The study aims to explore the interface combination effect and long-term stability of glass and polypropylene, and realize the industrial preparation of glass fiber reinforced polypropylene composite fiber. The mechanical properties of the composite fiber were studied. The spinnability of the sample was determined by differential scanning calorimeter and melting index. The mechanism and effect of interface bonding between polypropylene and glass fiber modified by silane coupling agent KH550 were analyzed by infrared spectrometer and scanning electron microscope. The results of the mechanical tests show that the tensile strength of glass fiber reinforced polypropylene composite fiber increases 29.7% at most compared with pure polypropylene fiber. The plastic injection sample was prepared by secondary melting of glass fiber reinforced polypropylene. Its tensile strength, bending modulus increase, and impact resistance increase by 29.2%,37.5%,22.3% respectively, compared with the plastic injection sample prepared by pure polypropylene. [ABSTRACT FROM AUTHOR]

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of High Pressure Physics is the property of Chinese Journal of High Pressure Physics Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Sciencepaper is the property of China Sciencepaper and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)