3D打印成型的玻璃纤维增强聚乳酸基复合材料

发布时间：2019-08-03 18:18

【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。
[Abstract]:In order to solve the problem of low strength of 3D printing resin based materials, a method of fiber reinforced resin based materials was proposed. Glass fiber and polylactic acid were composite and rapidly formed by 3D printing technology, and the effects of filling density and slice thickness on the mechanical properties of the composites were studied. The experimental results show that when the filling density of the sample reaches 90%, the bending strength and tensile strength of the sample can reach 49.26 MPa. and 21.28 MPa., respectively. When the slice thickness is 0.1 mm, the tensile strength and bending strength are 20.4 MPa. and 52.87 MPa., respectively. The tensile strength of the sample decreases with the increase of slice thickness and increases with the increase of filling density. The bending strength of the sample is negatively correlated with the slice thickness and positively correlated with the filling density. By analyzing the scanning electron microscope diagrams of different kinds of samples, it is found that the degree of fiber bundles infiltrating resin matrix is closely related to the layer thickness and filling density of the sample, and the increase of filling density and the decrease of layer thickness are beneficial to the combination of fiber bundles and resin matrix.
【作者单位】：浙江理工大学先进纺织材料与制备技术教育部重点实验室;
【基金】：国家国际科技合作专项项目(2011DFB51570)
【分类号】：TB332;TQ327.1

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