PC组分及色粉对玻纤增强PBT/PC的结晶影响  

Effect of PC Components and Color Powder on the Crystallization of Glass Fiber Reinforced PBT/PC

作　　者：赵书营 林洁龙 张可振 光善仪 徐洪耀[1] Zhao Shuying;Lin Jielong;Zhang Kezhen;Guang Shanyi;Xu Hongyao(Research Center for Analysis and Measurement&State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620,China;Key Laboratory of Science&Technology of Eco-Texile Ministry of Education,College of Chemistry,Chemical Engineering and Biotechnology,Donghua University,Shanghai 201620,China;Shanghai KINGFA Science&Technology Co.,Ltd.,Shanghai 201714,China)

机构地区：[1]东华大学分析测试中心&东华大学材料科学与工程学院,纤维材料改性国家重点实验室,上海201620 [2]东华大学化学化工与生物工程学院生态纺织教育部重点实验室,上海201620 [3]上海金发科技发展有限公司,上海201714

出　　处：《工程塑料应用》2023年第3期15-21,共7页Engineering Plastics Application

基　　金：国家自然科学基金项目(21771036)。

摘　　要：聚对苯二甲酸丁二酯(PBT)是一种半结晶性材料,聚碳酸酯(PC)是一种非结晶性材料,通过将PBT与PC共混可以得到兼具二者优点的PBT/PC合金。按照色粉的有无、PC的含量及黏度,通过熔融共混法制备得到玻纤增强PBT/PC合金,以研究其结晶行为。利用差示扫描量热法研究了合金在不同降温速率下的结晶过程,并使用Jeziorny法和莫志深法分析了PBT/PC合金的非等温结晶动力学。结果表明,20份PC添加相对10份PC添加的样品抑制了PBT材料的结晶,使结晶度降低5%左右,在10份PC添加时,PC黏度对于PBT材料的结晶行为影响差别不大,20份PC添加时低黏度的PC会比高黏度PC进一步抑制PBT材料的结晶性,色粉的加入会对PBT/PC合金的结晶起到促进作用,缩短材料的结晶时间,相同降温速率下可使半结晶时间缩短约0.3 min,有利于加工成型,提高生产效率。Polybutylene terephthalate(PBT)is a semi-crystalline material and polycarbonate(PC)is a non-crystalline material.By blending PBT with PC,PBT/PC alloys with the advantages of both can be obtained.Glass fiber reinforced PBT/PC alloys were prepared by melt blending method according to the presence or absence of color powder and PC content and viscosity,and their crystallization behavior was studied.The crystallization of alloys at different cooling rates was studied by differential scanning calorimetry.The non-isothermal crystallization kinetics of PBT/PC alloys were analyzed using Jeziorny’s method and Mo’s method.The results show that 20 parts PC addition inhibites the crystallization of PBT relative to 10 parts PC addition of the sample,which reduces the crystallinity by about 5%.The effect of PC viscosity on the crystallization behavior of PBT materials do not differ significantly at 10 parts PC additions.20 parts PC added with low viscosity PC will further inhibit the crystallinity of PBT material than high viscosity PC.The addition of color powder will promote the crystallization of PBT/PC alloy and shorten the crystallization time of the material.The same cooling rate can shorten the semi-crystallization time by about 0.3 min,which is conducive to processing and molding and improve the production efficiency.

关 键 词：聚对苯二甲酸丁二酯 聚碳酸酯 合金 结晶动力学 降温速率 

分 类 号：TB332[一般工业技术—材料科学与工程]