增强剂尺寸效应对聚酰胺6发泡复合材料性能的影响  

Dimension Effect of Reinforcement on Properties of Polyamide 6 Foam Composites

作　　者：沈超 朱能贵 蒋团辉[1,2] 曾祥补 李胜男 Chao Shen;Nenggui Zhu;Tuanhui Jiang;Xiangbu Zeng;Shengnan Li(National Engineering Research Center for Compounding and Modification of Polymer Materials,Guiyang 550022,China;Guizhou Material Technology Innovation Base,Guiyang 550022,China)

机构地区：[1]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550022 [2]贵州省材料技术创新基地,贵州贵阳550022

出　　处：《高分子材料科学与工程》2022年第8期75-88,共14页Polymer Materials Science & Engineering

基　　金：贵州省科研机构服务企业行动计划(黔科服企[2018]4010号);贵阳市白云区科技计划(白科合同[2020]36号);贵州省科技计划项目(黔科合平台人才[2017]5731)。

摘　　要：采用化学发泡注塑成型技术制备了聚酰胺6(PA6)发泡复合材料,分别以玻璃纤维、滑石粉及玻纤/滑石粉为增强剂,探究了玻纤长度及含量、滑石粉粒径及含量、玻纤/滑石粉对材料力学性能、流变特性、发泡行为、耐热性能和密度的影响。结果表明,玻璃纤维能有效提高材料的力学性能、耐热性能,改善流变性能,进而增强其可发性,其中,长度为3 mm的玻纤最有利于提升复合材料各方面性能,但PA6/GF复合材料密度过大,不利于轻量化;滑石粉(Talc)虽然对复合材料各项性能的改善有限,但PA6/Talc复合材料密度较小,有利于轻量化;GF/Talc复合体的各组分之间能互补协同,克服了单一组分填料的缺点,尤其是当PA6/GF/Talc的质量比为70/20/10时,复合材料在获得较高强度的同时兼具轻量化,综合性能良好。polyamide 6(PA6)foam composites were prepared by chemical foaming injection molding using glass fiber(GF),talc powder and glass GF/talc composite particles as reinforcement,respectively.The effects of glass fiber length and content,talc particle size and content,and glass fiber/talc composite particles on mechanical properties,rheological properties and foaming behavior of the composites were investigated.The results show that glass fibers can effectively improve the mechanical properties,heat resistance and rheological properties of the materials,enhancing its foaming ability.The glass fiber with the length of 3 mm is the most beneficial to improve the performance of the PA6/GF composites,but the density of composites is too large,which is not conducive to lightweight.Although talc powders have limited improvement on the properties of the composites,the density of tbe PA6/talc composites is relatively small,which is conducive to lightweight.The components of composite particle GF/talc can be complementary and synergistic,which overcome the shortcomings of single filler.Especially,when the mass ratio of PA6/GF/talc is 70/20/10,the composite material has high strength as well as lightweight showing good comprehensive performance.

关 键 词：尼龙6 玻璃纤维 滑石粉 发泡材料 

分 类 号：TB332[一般工业技术—材料科学与工程]