玻纤增强共聚聚丙烯高性能化的研究  

Study of Glass Fiber Reinforcing PPR Copolymer with High Performance

作　　者：胡帅领[1] 白时兵[1] 王琪[1] 潘晓勇[2] 李斌[2] 杜江伟[2] 

机构地区：[1]四川大学高分子研究所高分子材料工程国家重点实验室,四川成都610065 [2]四川长虹电器股份有限公司,四川绵阳621000

出　　处：《塑料工业》2011年第3期56-59,63,共5页China Plastics Industry

基　　金：四川省科技支撑计划的资助项目

摘　　要：利用韧性优良的共聚聚丙烯(PPR)作为增强基体,通过玻纤(GF)与PPR制备高性能PPR/GF复合材料,研究了流动改性剂、马来酸酐接枝聚丙烯(PP-g-MAH)和玻纤的含量以及挤出次数对PPR/GF复合材料结构与性能的影响。结果表明:自制的流动改性剂可大幅增加PPR/GF的熔体质量流动速率,流动性可适用于注塑工艺;PP-g-MAH增加了PPR基体与GF之间的界面相互作用,提高PP/GF复合材料的力学性能;随玻纤含量增加,PP/GF复合材料的拉伸强度和模量大幅增加,缺口冲击强度和断裂伸长率有所降低,但材料的韧性仍保持较高水平,所制备PPR/GF/PP-g-MAH共混材料的性能与ABS相当,可替代ABS工程塑料作为结构件使用;多次挤出加工会降低PPR/GF复合材料中玻纤的平均长度和材料的力学性能。In this paper, ethylene-propylene random copolymer （PPR）/glass fiber （GF） composites with high toughing properties were prepared. The influence of fluidity modifier, PP-g-MAH, glassfiber content and extrusion times on the structure and properties of PPR/GF composite was investigated. The results showed that the self-made fluidity modifier greatly enhanced the flow index of PPR/GF composite which was favorable to injection processing. PP-g-MAH also increased the surface interaction between PPR matrix and GF thus largely enhanced the mechanical properties. Moreover, with the increase of glass fiber content, the tensile strength and modulus of PPR/GF composites increased sharply while the notched impact strength and elongation at break decreased, but the toughness was kept high enough. As a result, the prepared PPR/GF/ PP-g-MAH composite had the similar mechanical performance as ABS but the cost was lower. Therefore, it can be used as an alternative material of ABS engineering plastics. Extrusion processing would reduce the average length of the glass fiber and mechanical properties of PPR/GF composites.

关 键 词：玻纤 增强 共聚聚丙烯 高性能 

分 类 号：TQ327.11[化学工程—合成树脂塑料工业]