【摘要】 采用熔融共混法制备了聚酰胺6/环氧型丙烯酸酯橡胶(PA6/ACM)共混物,并通过差示扫描量热仪(DSC)、X射线衍射仪(XRD)和偏光显微镜(PLM)对PA6/ACM共混物的热性能和结晶行为及晶体形貌进行了研究。结果表明,随着ACM含量的增加,共混物的融熔温度(T_m)和结晶温度(T_c)均略有下降;由于环氧型ACM的加入,PA6的晶型也由γ晶型转化为α晶型,且随着橡胶加入量的增加,结晶度逐渐降低,晶粒逐渐变小,结晶也越来越不完善;共混物的缺口冲击强度明显提高。更多还原

【Abstract】 Polyamide 6/acrylate rubber(PA6/ACM) blends were prepared by melt processing,and the thermal performance,crystallization behavior,and crystal morphology of the blends were investigated by differential scanning calorimetry(DSC),wide angle x-ray diffraction(WAXD),and polarizing microscope(PLM).It was found that with increasing ACM content,the melting point T_m and crystallization temperature T_c of the blends decreased slightly,the crystallinity and crystal size decreased.Upon addition of ACM into PA6,crystal phase transformation of γ→αoccurred.Notched impact strength of PA6/ACM was significantly improved with increasing ACM.更多还原