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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 by melt blending method. The non-isothermal crystallization and transformation behavior of PA6 matrix under limited conditions were studied by differential scanning calorimetry (DSC) and X-ray diffraction (XRD). The results showed that the complexation and coordination of metal ions Ca2 + with amide groups restricted the crystallization behavior and crystallinity of PA6 in PA6 / CaCl2 composites. With the increase of CaCl2 content, the crystallinity, crystallization peak temperature and melting peak temperature of PA6 gradually decreased, the crystallization rate decreased and the half width of crystallization increased. When CaCl2 content was more than 8%, PA6 became amorphous. In addition, the introduction of CaCl2 is conducive to the formation of α crystal in PA6.