摘要
以聚乳酸(PLA)为基体,连续玻璃纤维为增强体,采用熔融浸渍工艺制备连续玻璃纤维预浸丝,将制得的预浸丝作为3D打印耗材用于熔融沉积(FDM)的3D技术来制备连续玻璃纤维增强PLA复合材料试样,并研究了打印温度、层厚和打印速度对复合材料力学性能的影响。结果表明,当打印层厚为0. 5 mm,打印温度为230℃,打印速度为2 mm/s时,连续玻璃纤维增强PLA复合材料的弯曲性能最佳,弯曲强度和弯曲模量分别为327. 84 MPa和20. 293 GPa。综合考虑复合材料的力学性能、表面质量和尺寸稳定性,连续玻璃纤维增强PLA复合材料的最佳打印层厚为0. 5 mm,适宜的打印温度范围为200~220℃,打印速度范围为2~4 mm/s。
Using polylactic acid(PLA) as matrix and continuous glass fiber as reinforcement,continuous glass fiber prepreg wire was prepared by melt impregnation process.The prepreg filament was used as three dimensional(3 D) printing consumables for melt deposition(FDM) in 3 D technology to form continuous glass fiber reinforced PLA composite samples.The influence of printing temperature,layer thickness and printing speed on the mechanical properties of composites were studied.The results show when the thickness of the printing layer is 0.5 mm,the printing temperature is 230 and the printing speed is 2 mm/s,the flexural strength and modulus of continuous glass fiber reinforced PLA composites are 327.84 MPa and 20.293 GPa,respectively,which are the best.Considering the mechanical properties,surface quality and dimensional stability of the composites,the optimum printing layer thickness of continuous glass fiber reinforced PLA composites is 0.5 mm,the suitable printing temperature range is 200~220℃,and the printing speed range is 2~4 mm/s.
作者
崔永辉
贾明印
薛平
蒋金云
蔡建臣
CUI Yong-hui;JIA Ming-yin;XUE Ping;JIANG Jin-yun;CAI Jian-chen(School of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China;College of Mechanical Engineering,Quzhou University,Quzhou 324000,China;Zhejiang Kairui New Material Technology Co.,Ltd.,Quzhou 324022,China)
出处
《塑料工业》
CAS
CSCD
北大核心
2020年第1期51-54,77,共5页
China Plastics Industry
关键词
聚乳酸
连续玻璃纤维
熔融浸渍
熔融沉积
预浸丝
Polylactic Acid
Continuous Glass Fiber
Melt Impregnation
Melt Deposition
Prepreg Filament
