TLCP/PPS原位成纤共混纤维的非等温结晶动力学研究

来源 :第七届博士生学术年会 | 被引量 : 0次 | 上传用户:l568123016
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  通过熔融纺丝法制备了热致性液晶(TLCP)/聚苯硫醚(PPS)原位成纤共混纤维,采用差示扫描量热仪(DSC),通过非等温结晶方法研究了TLCP微纤对PPS基体结晶行为的影响,并用Jeziorny模型描述了非等温动力学。研究表明,TLCP/PPS原位成纤共混纤维的非等温结晶动力学过程能够使用Jeziorny模型来描述。此外,采用扫描电镜(SEM)观察了挤出共混物表面形貌及共混纤维的TLCP微纤结构。结果表明:在共混过程中,TLCP微纤结构在PPS基体中能够起到异向成核的作用,提高结晶速率和结晶温度,降低半结晶时间。
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