摘要
通过3D打印熔融沉积方式制备了短切碳纤维填充聚乳酸(PLA)/聚己二酸-对苯二甲酸丁二酯(PBAT)复合材料,具体研究了短切碳纤维长度及添加量对复合材料导热性能、结晶度和动态力学性能的影响。结果表明:3D打印过程能够使短切碳纤维有序排列,所制备的复合材料呈现出导热各向异性;填充长度为0.100 mm、体积分数为40%的短切碳纤维时,复合材料在平行打印路径方向的导热系数为1.34 W/(m·K),并且能够提升PLA/PBAT的结晶度和储能模量。
Polylactic acid(PLA)/poly(butyleneadipate-co-terephthalate)(PBAT)composites filled with chopped carbon fibers were prepared by 3D printing melt deposition.The effects of the length and amount of chopped carbon fibers on the thermal conductivity,crystallinity and dynamic mechanical properties of the composites were studied.The results show that the 3D printing process can make the chopped carbon fibers orderly arranged,and the composites prepared show thermal conductivity anisotropy.The thermal conductivity of the composites in the direction of parallel printing path is 1.34 W/(m·K)when the short carbon fiber with the filling length of 0.100 mm and the volume fraction of 40%is filled,and the crystallinity and storage modulus of PLA/PBAT can be improved.
作者
谢一督
兰淑珍
杨松伟
曹长林
陈庆华
XIE Yidu;LAN Shuzhen;YANG Songwei;CAO Changlin;CHEN Qinghua(College of Environment and Resources,Fujian Normal University,Fuzhou 350007,China;College of Chemistry and Materials,Fujian Normal University,Fuzhou 350007,China;Engineering Research Center for Green Circular Utilization of Polymer Resources of Ministry of Education,Fuzhou 350007,China;Fujian Nan'an Shida Rubber&Plastic Machinery Co.,Ltd.,Quanzhou 362300,Fujian Province,China)
出处
《上海塑料》
2022年第6期49-55,共7页
Shanghai Plastics
关键词
碳纤维
聚乳酸
导热性能
结晶度
储能模量
carbon fiber
polylactic acid
PBAT
thermal conductivity
crystallinity
storage modulus
