滑石粉复合材料性能的研究.pdf

第38卷第8期
塑料工业
2010年8月
CHINA PLASTICS INDUSTRY
马来酸酐接枝聚丙烯与成核剂提高聚丙烯/滑石粉
复合材料性能的研究
陈兴江,罗筑2“,刘一春,樊泽东2,吴建军
(1.贵州科学院,贵州贵阳550001;2.贵州大学材料强度与结构重点实验室,贵州贵阳550003;
3.驻江津地区军事代表室,重庆402264)
摘要:分别考察了马来酸酐接枝聚丙烯(PP-gMAH)、成核剂以及这两种不同改性机制的改性剂复配对聚丙烯
滑石粉(PP/Talc)复合材料力学性能和热性能的影响,结果表明:PP-g-MAH和a成核剂均能提高PP/Tale复合材料
的强度、刚度和热变形温度,但随着改性剂含量的增大,这些性能都存在最大值或极限值;而且PP-g-MAH使复合材
料的断裂伸长率明显降低,B成核剂可显著提高复合材料的冲击韧性和断裂伸长率,马来酸矸接枝釐内烯与α成核剂
复配对复合材料强度、刚度和热变形温度的改善具有协同性,且保持较高的断裂伸长率,马来酸酐接枝聚丙烯与B成
核剂复配可获得更好的综合力学性能。
关键词:马来酸酐接枝聚丙烯;成核剂;共混;力学性能;热变形温度
中图分类号:TQ325.1'4文献标识码:A文章编号:1005-5770(2010)08-0059-0
Study on Improvement of Mechanical Properties of PP/Talc Composite by PP- -MAH
and Nucleating Agent
CHEN Xing-jiang, LUO Zhu, LIU Yi-chun, FAN Ze-dong, WU Jian-jun
(1. Guizhou Sciences Academy, Guiyang 550001, China;
Guizhou Key [aboratory for Mechanical Behavior and Microstrucure of Materials, Guizhou University, Guiyang 550003, China
3. Jiangjin Area Military Representative Office, Chongqing 402264, hina)
Abstract The effects of PP-G-MAH, nucleating agent, and the complex system of the two on the me-
chanical properties and heat property of PP/Talc composite were researched respectively. Result showed that
the strength, rigidity and heat distortion temperature of the PP/Talc composite material could be improved by
PP-G-MAH ora nucleating agent. There were maximum or extreme values of mechanical properties of the com-
posite with the increase of the modifier respectively and elongation at break of the composite material decreased
with content of PP-G-MAH increasing. When adding nucleating agent, the impact strength and elongation at
break increased significantly. The synergistic effect of complex system of PP-G-MAII and a nucleating agent
on improving strength, rigidity and heat distortion temperature of the composite material was found and the
elongation at break was hold at a relatively high level. Better comprehensive mechanical properties were
obtained by the complex system of PP-G-MAH and B nucleating agent
Keywords: PP-G-MAH Nucleating Agent; Blending; Mechanical Properties, Heat Distortion Tempera
ture
聚丙烯(PP)作为通用聚合物材料可在较大范围报道引。纤维増强降低了制品的表面质量,使材
内通过改性调整其性能,满足不同的使用要求。刚度料断裂伸长率大幅降低,因此在一些使用场合受到限
和热变形温度的相对不足是通用塑料的共性问题,提制;通过使用无机粉体、马来酸酐接枝物、成核剂来
高聚丙烯刚度和热变形温度的主要方法有纤维増强,改善材料性能已取得了很多成果,而对改性效
无机填充,控制结品状态等,这些方法皆有大量文献果进行比较以及改性剂产生协同性的研究报道较少
贵州省科技攻关资助项目([200913010)**联系人luozhu20000sina.com
作者简介:陈兴江,男,高级工程师,主要从事聚合物材料共混改性研究