摘要
分别采用不同捻度的Kevlar-29缝线对碳纤维层合板预成型体进行链式缝合,并进行VARI(真空辅助树脂渗透)成型。研究了不同捻度缝合板的拉伸、弯曲及层间剪切性能和不同捻度缝线与树脂的界面结合情况。实验结果表明:缝合复合材料在缝线进行适当加捻之后,拉伸和弯曲强度都有不同程度提高,当捻度为80次/米时,分别较捻度为20次/米时提高了2.5%和9%,层间剪切强度降低了12%;且缝线捻度较低时,基本不会对树脂在缝线内部的浸润效果造成影响,捻度较高时,树脂渗透困难,对缝线浸润效果影响较大。
The Kevlar-29 fiber yarns of different twist numbers are used to stitch carbon fiber laminate performs respectively with chain-stitch style, and then process them with VARI （vacuum assisted resin infusion）. The tensile strength, flexural strength and interlaminal shearing strength of the composite laminates with different twist numbers are studied. The saturation of Kevlar yarns with different twist numbers in the resin matrix was also presented in this paper. The results show that the tensile and flexural strength of the stitched laminate will enhance in varying degrees with increase of twist number which the interlaminal shearing strength reduced. According to the test data, tensile and flexural strength of the stitched laminate （80m-1） enhance 2. 5% and 9% comparing with stitched laminate （20m-1） , and the interlaminal shearing strength reduces 12%. Meanwhile, the resin can saturate the Kevlar yarns well when twist number is low which the result will be opposite with high twist number.
出处
《玻璃钢／复合材料》
CAS
CSCD
北大核心
2013年第6期21-26,共6页
Fiber Reinforced Plastics/Composites
关键词
链式缝合
加捻
拉伸
弯曲
层间剪切
浸润
chain-stitch
twist
tensile strength
flexural strength
interlaminal shearing strength
saturate
