合成纤维

2019, v.48;No.360(02) 29-32

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芳纶增强复合材料波纹夹层3D打印与力学性能研究
Study on 3D Printing and Mechanical Properties of Aramid Reinforced Composites Corrugated Sandwich Structure

宋星,祝成炎,李婷婷,邵灵达,田伟
SONG Xing,ZHU Cheng-yan,LI Ting-ting,SHAO Ling-da,TIAN Wei

摘要(Abstract):

为解决波纹夹层结构传统制备方法存在的问题,采用熔融沉积(FDM)3D打印技术制备芳纶增强聚乳酸复合材料波纹夹层结构,并研究切片层高与打印温度对波纹夹层结构力学性能的影响。结果表明:当试样的切片层高为0.1 mm,打印温度为210℃时,复合材料波纹夹层结构的力学性能最好;试样的弯曲强度和冲击强度与切片层高呈负相关;随着打印温度的升高,试样的弯曲强度和冲击强度呈现先增大后减小的趋势。通过分析复合材料电镜图发现,切片层高的降低,有利于芳纶与聚乳酸基体的结合。
To solve the problems existing in the traditional preparation method of corrugated sandwich structure,using fused deposition modeling(FDM) 3D printing method to prepare aramid fiber reinforced PLA composite corrugated sandwich structure,and the slice layer height and printing temperature effect on the mechanical properties of corrugated sandwich structure were researched.The results show that when the slice layer height of the sample is 0.1 mm,the printing temperature is 210 ℃,the mechanical performance of the composite corrugated sandwich structure is the best.The sample flexural strength and impact strength are negatively correlated with the slice layer height.As the printing temperature increases,the sample flexural strength and impact strength first increase and then decrease.Through the electron micrograph analysis of the composite materials,it is found that the reduction of slice layer height is beneficial to the combination of aramid fiber and polylactic acid matrix.

关键词(KeyWords): 3D打印;芳纶;复合材料;波纹夹层;弯曲强度;冲击强度
3D printing;aramid fiber;composite material;corrugated sandwich;flexural strength;impact strength

Abstract:

Keywords:

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作者(Author): 宋星,祝成炎,李婷婷,邵灵达,田伟
SONG Xing,ZHU Cheng-yan,LI Ting-ting,SHAO Ling-da,TIAN Wei

DOI: 10.16090/j.cnki.hcxw.2019.02.007

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