【摘要】 对PA6/SEBS(SEBS-g-MAH)/CaCl2共混体系进行了一系列结构和性能的研究。SEM研究结果表明,加入SEBS后材料的断裂方式由脆性断裂变为韧性断裂,随CaCl2含量的提高断裂方式由韧性断裂向脆性断裂转变。DMTA测试结果为CaCl2和SEBS在共混体系中对尼龙6的玻璃化转变都产生作用。力学测试发现,当CaCl2含量为3%时,SEBS/SEBS-g-MAH的含量为5%～10%,共混物的断裂伸长率能达到300%以上,大大高于纯尼龙6以及相同SEBS配比的PA6/SEBS共混物的断裂伸长率。增强和增韧,二者在某种程度上是竞争反应,因此可以通过调整二者的含量和加入的顺序实现尼龙6力学性能(增强或增韧)的可控。更多还原

【Abstract】 A Series of Structure and performance of nylon-6,SEBS(SEBS-g-MAH) and calcium chloride blends were studied. The result of SEM shows that blends joined SEBS, way of rupture has changed from brittleness to ductility. With the percent of calcium chloride rises, the way of brittle rupture changes into flexile rupture. The result of DMTA shows that calcium chloride and SEBS have an effect on nylon-6 glass transition in blends. Mechanical test shows that the rupture extensibility reaches 300% at 3% of calcium chloride and 5%~10% of SEBS/SEBS-g-MAH in blends. To some degree, buildup and tenacity are competitive reactions, therefore the mechanical performance (buildup and tenacity) can be controlled by adjusting them percent and order.更多还原