熔融挤出温度对PA6／CaCl2复合材料结构与性能的影响

摘要

The research focused on the effect of processing temperature on the properties of PA6/ CaCl2 composites which were prepared through melting extrusion. Results showed that, with increasing processing temperature, the complex degree of PA6 and CaCl2 was deeper, the crystallinity of PA6/CaCl2 composites was smaller, the crystal degree was more imperfect, the viscosity of the PA6/CaCl2 composites was higher, and the melt flow rate was smaller. With increasing the processing temperature, the tensile strength of PA6/CaCl2 composites was increased firstly and then decreased. The Izod impact strength and flexural strength with an overall increasing trend when the processing temperature increased.%采用熔融挤出的方法，制备了聚酰胺6／氯化钙（PA6／CaCl2）复合材料，研究了熔融挤出温度对PA6／CaCl2复合材料的结晶行为和性能的影响。结果表明，熔融挤出温度越高，CaCl2与PA6的络合反应程度越大，PA6／CaCl2复合材料的结晶度越小，结晶不完善程度越大，复合材料的黏度越大，熔体流动速率越小；随着熔融挤出温度的提高，复合材料的拉伸强度先增大后减小，冲击强度、弯曲强度随熔融挤出温度的提高总体呈增加趋势。