EOC-g-MAH 共混增韧PLA/ HGB 复合材料的结构及性能

首页 > 过刊浏览>2013年第43卷第5期 >

EOC-g-MAH 共混增韧PLA/ HGB 复合材料的结构及性能
DOI:
                        
                    
CSTR:
                        [cstr]
                    
作者:
                        
                        
                    
作者单位:安徽理工大学材料科学与工程学院
作者简介:
通讯作者:
中图分类号:
基金项目:

Investigation on The Morphologies and Properties ofPLA/ HGB Composites Toughened by EOC鄄g鄄MAH

Author:

Affiliation:

Fund Project:

摘要

图/表

访问统计

参考文献

相似文献

引证文献

资源附件

文章评论

摘要:

采用熔融共混和模压成型工艺制备了马来酸酐接枝聚烯烃弹性体(EOC-g-MAH)共混增韧聚乳

酸/ 中空玻璃微珠(PLA/ HGB)复合材料,考察了EOC-g-MAH 的质量分数对复合材料的微观结构、力学性能

和热稳定性的影响。结果表明,EOC-g-MAH 的引入促进了基体对HGB 的表面润湿,显著增强了两者的界面

结合。随EOC-g-MAH 的含量增加,PLA/ HGB 复合材料的拉伸强度先上升后降低,并在含量为3% 时达到最

大值,较未改性体系提高了14. 23%,而弹性模量持续下降。在0 ~9%内,PLA/ HGB 复合材料的冲击韧性先急

剧上升而后趋缓,当EOC-g-MAH 的添加量为7%时,即可使增韧体系的冲击韧性提高近40%,表明EOC-g-

MAH 更有利于提高PLA/ HGB 复合材料的抗冲击性能。EOC-g-MAH 的引入使复合体系的热分解过程由一阶

失重转变为两阶失重,但对热分解温度几乎没有影响。

Abstract:

The poly (lactic acid) / hollow glass beads (PLA/ HGB) composites toughened by maleic anhydride

grafted ethylene鄄1鄄octene copolymer (EOC鄄g鄄MAH) were fabricated via molten and compression molding. The effects

of mass fraction of EOC鄄g鄄MAH on the microstructures, mechanical properties and thermal stabilities of the composites

were investigated. The results indicate that the superficial wettabilities of PLA to HGB are facilitated with the presence

of EOC鄄g鄄MAH and the interfacial adhesion between the matrix and HGB is enhanced remarkably. The tensile

strength of PLA/ HGB composites is increased firstly and then decreased. With 3% EOC鄄g鄄MAH, the peak value of

tensile strength is obtained which is 14. 23% higher than the controlled sample, whereas the elastic modulus is de鄄

clined continuously. In this investigative range, the impact toughness exhibits the trend of rapid increasing and then

moderating with the increase of PP鄄g鄄MAH. However, only 7% mass fraction of EOC鄄g鄄MAH could lead to a nearly

40% improvement in impact toughness which indicates that the EOC鄄g鄄MAH is preferred to improve the impact resist鄄

ance of PLA/ HGB composites. The existence of EOC鄄g鄄MAH varies the procedures of thermal decomposition of PLA/

HGB composites from one step weight鄄loss to two step weight鄄loss, whereas hardly influence is shown on the thermal

decomposition temperature.

参考文献

相似文献

引证文献

引用本文

杨继年. EOC-g-MAH 共混增韧PLA/ HGB 复合材料的结构及性能[J].宇航材料工艺,2013,43(5).

复制

文章指标

点击次数:
下载次数:
HTML阅读次数:
引用次数:

历史

收稿日期:
最后修改日期:
录用日期:
在线发布日期: 2016-11-28
出版日期:

期刊介绍

编委会

投稿须知

引用本文

分享

文章指标

历史

文章二维码