尼龙11/MBS/环氧树脂共混合金的力学性能和增韧机理  

THE STUDY OF MECHANICAL PROPERTIES ON NYLON 11 BLENDING SYSTEM

作　　者：李齐方[1] 田明[1] 冯威[1] 陈松[1] 金日光[1] 

机构地区：[1]北京化工大学高分子材料国家重点学科,北京100029

出　　处：《高分子材料科学与工程》2001年第4期57-61,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学基金;国家九五攻关项目资助 (5 944 30 11;95 - 5 32 - 0 1- 0 6 )

摘　　要：对尼龙 11共混合金体系的力学性能进行了考察。对于尼龙 11/ EXL - 2 6 91核 -壳冲击改性剂 /相容剂三元共混合金体系加入环氧树脂后 ,分散相 -冲击改性剂在尼龙 11基体中的分布更加均匀 ,两相的相容性提高 ,但分散相粒子粒径并未随环氧树脂用量的增加而减小 ;加入 1%的环氧树脂后 ,共混合金体系冲击强度最大 ,分散相粒子粒径最小 ;体系的断裂强度随着环氧树脂用量的增加而增大 ,伸长率则降低。The mechanical properties of nylon 11 blending alloy system were investigated. For nylon11/EXL 2691/epoxy ternary blending system. The impact modifier particles are dispersed more uniformly wtth addition of epoxy, and the compatibility of two phase is improved, but the particle size is not decreased as function of epoxy. The impact strength of blending system get maximum(>400 J/m) on addition of 1% epoxy, and particle size of dispersion phase get minimum. The tensile strength(>45 MPa) and tensile modulus of blending system are increased, but the elongation (> 100% ) is decreased with addition of epoxy resin. Toughening mechanism of the blending system belongs to dispersion phase initiating craze mechanism.

关 键 词：MBS 环氧树脂 尼龙11 增韧 “核-壳”冲击改性剂 力学性能 增韧机理 共混合金 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业] TQ323.5