Versify-g-(MAH-co-St)对改善PA6／Versify共混物增韧和均衡其力学性能的影响  

IMPROVEMENT OF TOUGHENING AND MECHANICAL PROPERTIES EQUILIBRIUM FOR PA6/VERSIFY BLENDS BY VERSIFY-g-(MAH-co-St)

作　　者：张甲敏[1,2] 李岩[1] 谢续明[1] 

机构地区：[1]先进材料教育部重点实验室清华大学化工系高分子研究所,北京100084 [2]河南科技学院化学化工学院,新乡453003

出　　处：《高分子学报》2009年第4期381-384,共4页Acta Polymerica Sinica

基　　金：国家自然科学基金(基金号10334020,50573038)资助项目

摘　　要：使用挤出机对乙丙共聚物Versify2300(乙烯含量12wt%)(V-2300)进行马来酸酐(MAH)和苯乙烯(St)多单体熔融接枝得到接枝物Versify-g-(MAH-co-St)(g-V-2300).通过SEM、FTIR和力学性能测试,研究了g-V-2300对PA6/(V-2300+g-V-2300)(70/30)共混物形态和性能的影响.研究结果表明,随着g-V-2300含量的提高,V-2300分散相粒径不断减小且分散均匀.当g-V-2300比例为25wt%时,分散相尺寸只有0.27μm,此时共混物的izod冲击强度达到324.54J/m,为PA6/(V-2300+g-V-2300)(70/(30+0))共混物的16倍.g-V-2300的加入,显著改善了PA6/(V-2300+g-V-2300)(70/30)共混物的冲击强度,其伸长率,拉伸强度和抗弯强度也得到提高,从而得到具有均衡力学性能的增韧尼龙6合金.A propylene-ethylene copolymer Versify2300 with 12 wt% ethylene content （V-2300） was multi- monomer melt grafted using maleic anhydride and styrene （MAH-St） by extruder. The effect of the addition of Versify-g-（MAH-co-St） （g-V-2300） on the compatibility of PA6/（V-2300 ＋ g-V-2300）（70/30） blends was investigated by means of SEM, FTIR and mechanical property measurements. The results showed that with increasing the g-V-2300 content, the size of the V-2300 dispersed phase became smaller and more uniform. When g-V-2300 is 25 wt% ,the dispersed phase size is only 0.27 μm,and the izod impact strength of the blend is 324.54 J/m and is 16 times larger than that of the blend without g-V-2300. The addition of g-V-2300 remarkably improved the mechanical properties of PA6/（ V-2300 ＋ g-V-2300） （70/30） blends including elongation, tensile strength and flexural strength. Thus toughened Nylon 6 alloys could be achieved with balanced mechanical properties.

关 键 词：PA6/Versify共混物 增韧增强 形态 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业] TG115.5[金属学及工艺—物理冶金]