Search

POE was used to modify polypropylene (PP) to improve paint adhesion on the surface of PP material for automotive interior. By means of differential scanning calorimetry, scanning electron microscope, Dyne pen, Paints Crosscut test and mechanical property test, the effects of POE on crystallization property, dispersion ability, surface tension, paint adhesion and mechanical properties of modified PP were investigated. The results show that with the increase of POE, the tensile yield strength and bending modulus of modified PP decrease, and the notch impact strength increases. The higher melt flow rate (MFR) of POE, the greater the reduction of rigidity. The higher the content of POE, the more favorable it is to improve the surface adhesion of modified PP. When the POE content is not less than 15%, the Paints Cross-cut test level of the template reaches 0. The higher the MFR of POE, the more conducive to the orientation and dispersion of the rubber phase on the surface of the template, which is conducive to the immersion of the paint and the improvement of the paint adhesion. When the paint film thickness is less than 26 μm, it is difficult to form an effective and dense paint film on the surface of the template, resulting in poor paint adhesion of the template. When the paint film thickness is not less than 26 μm, the template paint adhesion is better. [ABSTRACT FROM AUTHOR]

Na-GMMT/TPS pellets (TPS for short) were prepared with sodium montmorillonite as filler. TPS was blended with PBAT in different proportions, and TPS-PBAT composites were prepared by twin-screw extruder. The structure and properties of TPS-PBAT composites were characterized by universal material testing machine, X-ray diffraction (XRD), thermogravimetric analyzer (TG) and scanning electron microscope (SEM). The results show that when TPS is used as matrix, the tensile strength of the composites can be greatly improved while maintaining good elongation at break. The elongation at break of TPS-PBAT-4 composites is 233.3% and the tensile strength is 18.9 MPa. With the increase of TPS content, the diffraction peaks of the composites gradually flatten, indicating that the addition of TPS reduces the crystallinity of the composites. The addition of TPS improves the thermal stability of corn starch and PBAT. When PBAT is used as matrix, the compatibility between TPS and PBAT is poor. When TPS is used as matrix, there is no obvious boundary between TPS and PBAT, and it shows better compatibility. [ABSTRACT FROM AUTHOR]

Maleic anhydride grafted ethylene propylene diene monomer (EPDM-g-MAH) was prepared by melt blending, and the grafting rate was 1.57%. The polylactic acid/ethylene propylene diene monomer (PLA/EPDM) composites with different EPDM-g-MAH contents were prepared by using EPDM-g-MAH as compatibilizer. The grafting amount of maleic anhydride (MAH) was characterized by Fourier transform infrared spectroscopy (FTIR). Mechanical properties, microstructure and non-isothermal crystallization of PLA/EPDM/EPDM-g-MAH were characterized by universal tensile testing machine, simply supported beam impact testing machine, scanning electron microscope (SEM) and differential scanning calorimetry (DSC). The results show that the addition of EPDM-g-MAH improves the compatibility between PLA and EPDM. When the content of EPDM-g-MAH is 1.0%, elongation at break and impact strength of PLA/EPDM/ EPDM-g-MAH are 136% and 103% higher than those of PLA/EPDM, respectively. The crystallinity of system is the highest. EPDM-g-MAH can improve mechanical properties and crystallization properties of composites. [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.)

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 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.)