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.
出处
《工程塑料应用》
CAS
CSCD
北大核心
2011年第6期27-31,共5页
Engineering Plastics Application
关键词
尼龙6
K树脂
应力应变行为
拉伸
相容性
nylon 6, K resin, stress-strain behaviors, tensile, compatibility
