塑料科技2025，Vol.53Issue(10)：25-29,5.DOI:10.15925/j.cnki.issn1005-3360.2025.10.005
GF对PP复合材料结晶性能、流变性能与力学性能的影响
Effect of GF on Crystallization,Rheological and Mechanical Properties of PP Composites
摘要
Abstract
Polypropylene(PP)was used as the matrix material,and PP/glass fiber(PP/GF)composites were prepared via melt compounding.The effects of GF content on the mechanical properties,microscopic morphology,crystallization properties,and rheological properties of the PP/GF composites were investigated.The results showed that with the addition of GF,the tensile strength and impact strength of the PP/GF composites both initially increased and then decreased,and were slightly higher than those of pure PP.When the mass fraction of GF was 1%,the tensile strength and impact strength were increased by 3%and 11%,respectively,compared with pure PP.The addition of GF also shifted the crystallization temperature of PP to a higher temperature,while the melting temperature first increased and then decreased,and the degree of crystallinity first decreased and then increased.Moreover,the addition of GF caused a shift of the PP diffraction peak to a smaller angle and an increase in the interplanar spacing,indicating that GF was inserted into the PP lattice and caused lattice distortion.The storage modulus(G')and loss modulus(G'')of the PP/GF composites increased with increasing angular frequency.In the low-frequency region,the G'and G''of pure PP were slightly higher than those of the PP/GF composites.However,in the high-frequency region,the G'and G''of the PP/GF composites were slightly higher than those of pure PP.Meanwhile,the increase of angular frequency caused a decrease trend in the viscosity of the PP/GF composites,which followed the pseudoplastic flow behavior.关键词
聚丙烯/无碱玻璃纤维/结晶性能/流变性能/力学性能Key words
Polypropylene/Alkali-free glass fiber/Crystallization properties/Rheological properties/Mechanical properties分类
化学工程引用本文复制引用
吴珊,陈杏荷,舒小双..GF对PP复合材料结晶性能、流变性能与力学性能的影响[J].塑料科技,2025,53(10):25-29,5.基金项目
2020年贵州师范学院博士基金项目(2020BS029) （2020BS029）
贵州省普通高等学校青年科技人才成长项目(黔教合KY[2021]244) （黔教合KY[2021]244）
