尼龙6/K树脂共混物拉伸应力应变行为  

THE TENSILE STRESS-STRAIN BEHAVIOR OF NYLON 6/K RESIN BLENDS

作　　者：刘海燕[1,2] 敬波[1] 戴文利[1] 

机构地区：[1]湘潭大学化学学院高分子材料应用技术湖南省重点实验室,湘潭411105 [2]湖南消防总队,长沙410000

出　　处：《工程塑料应用》2011年第6期27-31,共5页Engineering Plastics Application

摘　　要：研究了尼龙(PA)6及PA6/K树脂共混物在不同拉伸温度与应变速率下的拉伸应力应变行为。结果表明,纯树脂与共混物的拉伸应力应变行为均具有强烈的温度依赖性与应变速率依赖性。马来酸酐接枝K树脂共聚物(K-g-MAH)的加入明显改变了共混物的拉伸应力应变行为。应用Eyring方程、动态力学测试、扫描电子显微镜研究表明,K树脂相的引入使PA6基体比较容易达到屈服所需要的活化体积,反映了变形机理的改变。增容剂K-g-MAH的加入,使共混物应力集中因子变小,相界面模糊,其对PA6/K树脂共混物有较好的增容作用。The tensile stress-strain behaviors of pure PA6 and PA6/K resin blends were investigated under different stretching temperature and strain rate. The results showed that the tensile stress-strain behaviors of both pure PA6 and PA6/K resin blends were obvious temperature and strain rate dependence. The incorporation of K-g-MAH significantly altered the tensile stress-straln behaviors of the blend. By using Eyring equation, DMTA, SEM, the results showed that with the introduction of K resin phase, PA6 matrix could achieved the activate volume of yielding easily, it reflected the change of deformation mechanism. Compatibilizer K-g-MAH led to decresce of the stress concentration factor of the blend and obscuring of phase interface, K-g-MAH had a good compatibilization role in PA6/K resin blends.

关 键 词：尼龙6 K树脂 应力应变行为 拉伸 相容性 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]