甲基纤维素对PP/EVA/GF浮纤现象及性能的影响  

Effect of methyl cellulose on floating fiber phenomenon and properties of PP/EVA/GF composites

作　　者：张李 夏英 王书唯 ZHANG Li;XIA Ying;WANG Shuwei(School of Textile and Materials Engineering,Dalian Polytechnic University,Dalian 116034,China)

机构地区：[1]大连工业大学纺织与材料工程学院,辽宁大连116034

出　　处：《大连工业大学学报》2024年第4期270-273,共4页Journal of Dalian Polytechnic University

基　　金：辽宁省教育厅科学研究经费项目(面上项目)(LJKZ0513);辽宁省教育厅青年科技人才项目(J2019046);辽宁省“兴辽英才计划”项目(XLYC1906017)。

摘　　要：将甲基纤维素(MC)填充于聚丙烯/乙烯-醋酸乙烯酯共聚物/玻璃纤维(PP/EVA/GF)复合体系制备了PP/EVA/GF/MC。研究了MC对PP/EVA/GF的力学性能、微观结构、结晶性能和流动性能的影响。结果表明,在MC用量2份的情况下,PP/EVA/GF/MC表现出优异的力学性能,其拉伸强度为20.20 MPa,弯曲强度为38.79 MPa,分别比PP/EVA/GF提高了12.97%和56.28%。加入MC能有效改善PP/EVA/GF的浮纤现象,制品表面玻纤数目明显减少。PP/EVA/GF/MC结晶度为35.72%,比PP/EVA/GF结晶度提高了4.97%。剪切速率低于100 s^(-1)时,PP/EVA/GF/MC黏度低于PP/EVA/GF,表明MC能提升PP/EVA/GF的流动性。PP/EVA/GF/MC composites were prepared by filling methyl cellulose(MC)in polypropylene/ethylene vinyl acetate copolymer/glass fiber(PP/EVA/GF)composite system.The effects of MC on the mechanical properties,microstructure,crystalline properties and flow properties of PP/EVA/GF composites were investigated.The results showed that at the addition of 2 parts of MC,PP/EVA/GF/MC exhibited excellent mechanical properties,with a tensile strength of 20.20 MPa and a bending strength of 38.79 MPa,which were 12.97%and 56.28%higher than PP/EVA/GF,respectively.The floating fiber phenomenon of PP/EVA/GF could be effectively improved by adding MC,and the number of glass fiber on the surface of the products was obviously reduced.The crystallinity of PP/EVA/GF/MC is 35.72%,which is 4.97%higher than that of PP/EVA/GF.When the shear rate is below 100 s^(-1),the viscosity of PP/EVA/GF/MC is lower than that of PP/EVA/GF,indicating that the fluidity of PP/EVA/GF could be improved by MC.

关 键 词：甲基纤维素 聚丙烯 乙烯-醋酸乙烯酯共聚物 玻璃纤维 浮纤改善 

分 类 号：TQ327.1[化学工程—合成树脂塑料工业]