制备了硅烷接枝聚丙烯 (PP g Si) ,研究了PP g Si作为聚丙烯 /玻纤 (PP/GF)复合体系的界面相容剂对界面结合和力学性能的影响 ,并与马来酸酐接枝聚丙烯 (PP g MAH)的增容效果进行了比较。结果表明 ,PP g Si对PP/GF体系有增容作用 ,不仅...制备了硅烷接枝聚丙烯 (PP g Si) ,研究了PP g Si作为聚丙烯 /玻纤 (PP/GF)复合体系的界面相容剂对界面结合和力学性能的影响 ,并与马来酸酐接枝聚丙烯 (PP g MAH)的增容效果进行了比较。结果表明 ,PP g Si对PP/GF体系有增容作用 ,不仅可以改善PP/GF复合体系的拉伸强度 ,而且可以改善其韧性。硅烷接枝聚丙烯可以降低PP/GF复合体系的最大扭矩。玻纤的加入可以提高聚丙烯的热变形温度 ,硅烷接枝聚丙烯对PP/GF复合体系的热变形温度有稍微改善。扫描电镜观察表明 ,玻纤与基体间具有强有力的界面结合 。展开更多
Aim To determine the effect of silane grafted polypropylene on the property of different filler/polypropylene composites. Methods Polypropylene (PP) composites filled with talc(Ta), baryta sulfate and calcium carbonat...Aim To determine the effect of silane grafted polypropylene on the property of different filler/polypropylene composites. Methods Polypropylene (PP) composites filled with talc(Ta), baryta sulfate and calcium carbonate coupled with silane grafted polypropylene (PP-g-Si) were made, their mechanical properties and thermal properties were investigated, respectively. Results As compared with the non-coupled composites, the mechanical properties of PP/Ta/PP-g-Si composites were improved to some extent, though the values of tensile modulus and the strain at peak were decreased. But for PP/BaSO4 and PP/CaCO3 composites, the values of their mechanical properties varied slightly or even decreased with increasing PP-g-Si content within the experimental component. Meanwhile, PP-g-Si also affected the melting and crystallization behavior of PP in the composites. Conclusion PP-g-Si offers compatibilization in PP/Ta composites, but offers no-compatibilization in PP/BaSO4 and PP/CaCO3 composites within the extent of the present range of PP-g-Si, which shows that PP-g-Si can be used as the macromolecular coupling agent of PP and Ta composite.展开更多
文摘Aim To determine the effect of silane grafted polypropylene on the property of different filler/polypropylene composites. Methods Polypropylene (PP) composites filled with talc(Ta), baryta sulfate and calcium carbonate coupled with silane grafted polypropylene (PP-g-Si) were made, their mechanical properties and thermal properties were investigated, respectively. Results As compared with the non-coupled composites, the mechanical properties of PP/Ta/PP-g-Si composites were improved to some extent, though the values of tensile modulus and the strain at peak were decreased. But for PP/BaSO4 and PP/CaCO3 composites, the values of their mechanical properties varied slightly or even decreased with increasing PP-g-Si content within the experimental component. Meanwhile, PP-g-Si also affected the melting and crystallization behavior of PP in the composites. Conclusion PP-g-Si offers compatibilization in PP/Ta composites, but offers no-compatibilization in PP/BaSO4 and PP/CaCO3 composites within the extent of the present range of PP-g-Si, which shows that PP-g-Si can be used as the macromolecular coupling agent of PP and Ta composite.
