摘要
通过扫描电镜、差示扫描量热仪和力学性能测试等分析方法,研究甲基丙烯酸甲酯(MMA)和甲基丙烯酸缩水甘油酯(GMA)共聚物对尼龙6(PA6)/PMMA共混物形态结构、结晶行为和力学性能的影响。结果表明,P(MMA-co-GMA)可以提高PA6与PMMA的相容性,改善共混物的拉伸性能,但其增容效果取决于P(MMA-co-GMA)中的环氧基团与PA6末端氨基所形成的接枝共聚物的数量,只有当其达到某一临界值时,共混物才具有最佳的力学性能,并且加入P(MMA-co-GMA)后,基体相PA6的结晶能力降低,导致共混物在拉伸过程中出现二次屈服行为。
The effects of poly （methyl methacrylate-co-glycidyl methacrylate）（MMA-co-GMA） copolymer on morphology, crystallizing behavior and tensile properties of PA6/PMMA blends were investigated by SEM,DSC and mechanical testing. The results show that the epoxide groups of MMA-co-GMA reacted with the NH2 ends of PA6 to form in-situ PA6-g-PMMA copolymers, the compatibility between PA6 and PMMA is improved and the tensile property of PA6/PMMA blends is enhanced significantly. But the effect of poly（MMA-co-GMA）copolymer on PA6/ PMMA blends depends on the amount of the graft copolymers. The addition of poly（methyl methacrylate-co-glyceryl methacrylate） copolymer can effectively reduce the crystallization ability of PA6, which causes a double yielding behavior of PA6 and its blends.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2013年第1期63-66,共4页
Polymer Materials Science & Engineering
