缝合增强泡沫夹芯结构复合材料力学性能研究

玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (10): 46-52.

缝合增强泡沫夹芯结构复合材料力学性能研究

仇艳慧,徐庆林,尹昌平,张鉴炜,曾竟成^*

国防科学技术大学航天科学与工程学院,长沙410073

收稿日期:2017-06-20 出版日期:2017-10-20 发布日期:2017-10-20
通讯作者: 曾竟成(1962-),男,副研究员,主要从事树脂基复合材料方面的研究,zengjingcheng@vip.sina.com。
作者简介:仇艳慧(1992-),女,硕士生,主要从事树脂基复合材料方面的研究。
基金资助:
国家自然科学基金青年基金(51403235)

MECHANICAL PERFORMANCE OF STITCHED FOAM CORE SANDWICH COMPOSITES

QIU Yan-hui,XU Qing-lin,YIN Chang-ping,ZHANG Jian-wei

College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073, China

Received:2017-06-20 Online:2017-10-20 Published:2017-10-20

摘要/Abstract

摘要： 采用机械缝合设备连续制备了“X”型构型缝合增强泡沫夹芯结构预成型体,并采用真空导入模塑工艺(VIMP)整体成型了缝合增强泡沫夹芯结构复合材料。实验研究了面板纤维布层数、面板纤维布穿透缝合层数、缝合角度、缝合针距及纱线股数对缝合增强泡沫夹芯结构复合材料弯曲性能和平压性能的影响规律。实验结果表明:与未缝合结构相比,缝合结构在质量未明显增加的情况下,弯曲性能和压缩性能得到了显著提高,其弯曲刚度最大提高了4.66倍,破坏载荷最大提高了13.8倍;压缩强度和压缩模量最大分别提高了26.2倍和15.2倍。

关键词: 缝合增强, 泡沫夹芯结构, 复合材料, 弯曲性能, 平压性能

Abstract: The stitched foam core sandwich structure preforms were prepared by new type of stitched machine. Then the vacuum infusion molding process (VIMP) was used to fabricate the stitched foam core sandwich composites. Then the influences of fiber panel layers, fiber panel penetrating layers, stitched angles, stitched step length, the numbers of yarns on the bending and the compression performance were carefully studied. The results show that, compared with the unstitched structure, stitching can significantly improve the bending and compression properties of the composites. The bending stiffness of the structure increased by 4.66 times and the breaking load increased by 13.8 times at most. Simultaneously, the compression strength and compression modulus increased by 26.2 times and 15.2 times at most.

Key words: stitch-reinforced, foam core sandwich structure, composites, bending performance, flat compression performance

中图分类号:

TB332

仇艳慧,徐庆林,尹昌平,张鉴炜,曾竟成. 缝合增强泡沫夹芯结构复合材料力学性能研究[J]. 玻璃钢/复合材料, 2017, 0(10): 46-52.

QIU Yan-hui,XU Qing-lin,YIN Chang-ping,ZHANG Jian-wei. MECHANICAL PERFORMANCE OF STITCHED FOAM CORE SANDWICH COMPOSITES[J]. Fiber Reinforced Plastics/Composites, 2017, 0(10): 46-52.

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