用于FDM的PBAT/纳米CaCO_(3)复合材料的制备及性能探究  

Study on preparation and performance of PBAT/nano-CaCO_(3) composite material for FDM

作　　者：阴梦啸 汪艳[1] 李春晖 郑银松 陶永祥 Yin Mengxiao;Wang Yan;Li Chunhui;Zheng Yinsong;Tao Yongxiang(School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430073)

机构地区：[1]武汉工程大学材料科学与工程学院,武汉430073

出　　处：《化工新型材料》2022年第7期110-113,119,共5页New Chemical Materials

基　　金：广东省企业重点实验室项目“3D打印聚合物及复合材料”(2018B030323001);武汉工程大学第十二届研究生教育创新基金(CX2020154)。

摘　　要：采用熔融共混法将聚己二酸/对苯二甲酸丁二酯(PBAT)与纳米碳酸钙(纳米CaCO_(3))复合,研究了纳米CaCO_(3)含量对复合材料力学性能、热性能和熔体流动性的影响。结果表明:添加纳米CaCO_(3)能够改善复合材料的拉伸性能并提高其维卡软化温度,拉伸强度在纳米CaCO_(3)添加量为10%时最佳,比纯PBAT的拉伸强度提高了19.14%。将添加10%纳米CaCO_(3)的复合材料拉丝,然后以不同打印温度和打印速度进行熔融沉积(FDM)打印。当打印温度为220℃,打印速度为20mm/s时,打印试样的综合拉伸性能最佳。Poly(butylene adipate-co-terephthalate)(PBAT) was compounded with nanometer calcium carbonate(nano-CaCO_(3)) by melt blending.The effects of nano-CaCO_(3) content on the mechanical properties,thermal properties and melt fluidity of the composites were studied.The results shown that the addition of nano-CaCO_(3) can improve the tensile properties and Vicat softening temperature of the composites.The tensile strength was the best when the nano-CaCO_(3) content was 10%,which was 19.14% higher than that of pure PBAT.The composite with 10% nano-CaCO_(3) was drawn and then printed by FDM at different printing temperature and printing speed.When the printing temperature was 220℃ and the printing speed was 20 mm/s,the comprehensive tensile properties of the printed samples were the best.

关 键 词：熔融共混 聚己二酸/对苯二甲酸丁二酯 纳米碳酸钙 熔融沉积 

分 类 号：TQ323.43[化学工程—合成树脂塑料工业]