摘要
为解决3D打印树脂基材料强力低的问题,提出利用纤维增强树脂基材料的方法,采用3D打印技术将玻璃纤维和聚乳酸复合并且快速成型,并研究了填充密度和切片层厚对于复合材料力学性能的影响。试验结果表明,当试样打印的填充密度达到90%时,试样的弯曲强度和拉伸强度分别可达到49.26和21.28 MPa。试样切片层厚为0.1 mm时,所得到的拉伸强度和弯曲强度分别为20.4和52.87 MPa。试样的拉伸强度随着切片层厚的增加而减少,随着填充密度的增加而增加。试样的弯曲强度与切片层厚是负相关,与填充密度是正相关。通过分析不同种类试样截面的扫描电镜图发现,纤维束浸润树脂基体的程度与试样的层厚和填充密度密切相关,填充密度的增加和层厚的减少有利于纤维束与树脂基体的结合。
In order to solve the problem of low strength in 3-D printing resin-based materials,fibers were used to reinforce the resin-based materials. Glass fibers and polylactic acid were blended and rapidly formed by using 3 D printing technology. The influences of filling density and slice thickness on the mechanical properties of the composites were studied. The results of the mechanical experiments show that the flexural strength and tensile strength of the samples can reach 49. 26 and 21. 28 MPa,respectively,when the filling density of the samples is 90%. When the slice thickness of the sample was0. 1 mm,the obtained tensile strength and flexural strength were 20. 4 and 52. 87 MPa,respectively. By the analysis of the results of mechanical experiments,the tensile strength of the samples decreases as the slice thickness increases,and increases as the filling density increases. The flexural strength of the samples is negatively correlated with the slice thickness,and is positively correlated with the filling density. By analyzing scanning electron microscopy images of cross sections of different kinds of samples,the degree of fiber bundle infiltration resin matrix is closely related to the slice thickness and filling density of the samples,and the increase in filling density and the reduction in slice thickness facilitate the bonding of the fiber bundles with the resin matrix.
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2017年第10期13-18,共6页
Journal of Textile Research
基金
国家国际科技合作专项项目(2011DFB51570)
关键词
玻璃纤维
3D打印
弯曲性能
拉伸性能
聚乳酸
glass fiber
3 D printing
flexural property
tensile property
polylactic acid
作者简介
蔡冯杰（1992-），男，硕士生。主要研究方向为3D打印复合材料。
田伟，通信作者，E-mail：47151938@qq．com。
