MCPA6/聚酯型PUR-T原位复合材料的制备及表征  

PREPARATION AND CHARACTERIZATION OF MCPA6/PUR-T IN-SITU COMPOSITE

作　　者：杨光耀[1] 林志勇[1] 钱浩[1] 赵杨[1] 黄颖[1] 林军超[1] 

机构地区：[1]国立华侨大学材料科学与工程学院,厦门361021

出　　处：《工程塑料应用》2011年第3期10-13,共4页Engineering Plastics Application

基　　金：国家自然科学基金项目(50673030);福建省自然科学基金项目(E0710014);福建省发改委发明创造基金项目(FJFGW2010011)

摘　　要：采用阴离子原位聚合法制备了单体浇铸尼龙6(MCPA6)/聚酯型热塑性聚氨酯弹性体(PUR-T)复合材料,考察了其性能及结构。力学性能测试表明,当PUR-T质量分数为1.1%时,复合材料的断裂伸长率达到214.5%,相比MCPA6提高了147%,随着PUR-T含量的增加,复合材料的缺口冲击强度逐渐提高。扫描电子显微镜观察发现,复合材料的拉伸断口表现出明显的韧性断裂特征;广角X射线衍射测试结果表明,复合材料只存在α晶型,而且随着PUR-T的加入,降低了MCPA6的结晶温度和玻璃化转变温度,表明PUR-T的加入,有效削弱了PA6分子链之间的相互作用。Composites of nylon 6 and thermoplastic polyester-based urethane elastomer（MCPA6/PUR-T） were synthesized with e-caprolactam via in- situ anionic ringopening polymerization. When compouding with 1.1% PUR-T, the breaking enlongation of the composite was greatly increased and reached 214.5% （which was 247% higher than that of the pure MCPA6）. Moreover, the notched izod impact strength of the composite was also enhanced with the increase of the PUR-T content. Ductile fracture was found during the SEM characterization process, and only u-form crystal of nylon 6 existed in the composite detected by wide-angle X-ray diffraction. Furthermore, the crystallization temperature and glass-transition temperature were decreased with increasing PUR-T content, which indicated that the interaction between polyamide 6 chains was weakened by PUR-T.

关 键 词：MC尼龙6 聚酯型热塑性聚氨酯弹性体 阴离子原位聚合 氢键 韧性 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]