摘要
以聚丁二酸丁二醇酯(PBS)为基体,滑石粉和聚乳酸(PLA)为改性剂,采用熔融挤出法制备了PBS/PLA/滑石粉三维(3D)打印线材,并对其进行了熔融成型研究。通过分析结晶性能、流变性能、力学性能、断面形貌和打印效果对PBS/PLA/滑石粉体系进行了探究。结果表明,PLA的加入使PBS的结晶温度下降了5℃;随着PLA含量的增加,材料的复数黏度、储能模量和损耗模量均得到提高;而拉伸强度则随PLA含量的增加下降了1.71 MPa,缺口冲击强度下降了2.63kJ/m^2;PLA含量的增加使断面逐渐粗糙;在打印效果上复合材料的打印模型随PLA含量的增加而变得美观规整,当底板温度高于110℃时,打印制件的翘曲度较低,同时拉伸强度随着打印温度的升高而增加。
Poly(lactic acid)(PLA)and talc powder were used to modify poly(butylene succinate)(PBS),and then a PBS/PLA/talc composite filament was prepared for fused deposition modeling(FDM).The effect of PLA content on 3D printing processability was investigated by crystallinity analysis,rheological behavior,mechanical performance,scanning electron microscopy and 3D printing effect.The experimental results indicated that the crystallization temperature of PBS decreased by 5°C with an increase of PLA content,but the complex viscosity and storage and loss moduli increased gradually in the presence of PLA.Moreover,with increasing PLA content,the tensile strength and notched impact strength of the composite decreased by 1.71 MPa and 2.63 kj/m 2,respectively.The fracture surface of tensile specimens also became rougher.3D printing process parameters for PBS/PLA/talc composite filament was investigated by a FDM method.The results indicated that the printing effect was improved with the addition of PLA.The warpage was improved significantly when the plate temperature exceeded 110°C,and meanwhile,the tensile strength increased with an increase of printing temperature.
作者
周运宏
夏新曙
杨松伟
黄宝铨
陈庆华
肖荔人
ZHOU Yunhong;XIA Xinshu;YANG Songwei;HUANG Baoquan;CHEN Qinghua;XIAO Liren(College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350007,China;College of Environmental Science and Engineering,Fujian Normal University,Fuzhou 350007,China)
出处
《中国塑料》
CAS
CSCD
北大核心
2018年第3期85-91,共7页
China Plastics
基金
国家重点研发计划项目(2016YFB0302300)
