摘要
采用熔融共混法,制备了聚酰胺6/氯化钙(PA6/CaCl2)复合材料。通过差示扫描量热法(DSC)、X射线衍射法(XRD)研究了PA6基体在受限条件下的非等温结晶及晶型转变行为。结果表明:金属离子Ca2+与酰胺基团的络合配位作用使PA6/CaCl2复合材料中PA6的结晶行为和结晶度受到了限制。随着CaCl2含量的增加,PA6的结晶度、结晶峰温度、熔融峰温度逐渐降低,结晶速率减小,结晶半峰宽增大,当CaCl2的含量大于8%时,PA6变为无定形态;此外,CaCl2的引入有利于PA6中α晶的生成。
Polyamide 6/calcium chloride(PA6/CaCl2) composites were prepared through melting extrusion process,the crystallization behavior and crystal structures of PA6/CaCl2 composites were studied by differential scanning calorimeter(DSC) and X-ray diffractometer(XRD).The results show that: the CaCl2 in PA6 can destroy the hydrogen bond and change the crystal structures and crystallization behavior of PA6.With the increase of CaCl2 content,the crystallization temperature,crystallinity and crystallization rate of PA6 decrease.Moreover,the confined condition is in favor of forming α-crystal.When the CaCl2content is up to 8%,the PA6 changes from crystal phase into amorphous phase.
出处
《塑料科技》
CAS
北大核心
2013年第7期37-40,共4页
Plastics Science and Technology
基金
贵州大学研究生创新基金项目(校研理工2012030)
贵州省自然科学基金项目(黔科合J字[2012]2123号)
关键词
聚酰胺6
受限结晶
金属离子
配位作用
Polyamide 6
Confined crystallization
Metal ions
Coordination