碳纤维/环氧复合材料孔隙缺陷的工艺影响因素研究

复合材料科学与工程 ›› 2014, Vol. 0 ›› Issue (5): 51-55.

碳纤维/环氧复合材料孔隙缺陷的工艺影响因素研究

陈超¹, 张娅婷², 顾轶卓^1*, 张华婷²

1.北京航空航天大学材料科学与工程学院,空天材料与服役教育部重点实验室,北京100191;
2.航天材料及工艺研究所,北京100076

收稿日期:2013-01-03 出版日期:2014-05-28 发布日期:2021-09-14
通讯作者: 顾轶卓(1979-),男,副教授,硕士生导师,主要从事复合材料方面的研究,benniegu@buaa.edu.cn。
作者简介:陈超(1989-),男,博士研究生,主要从事复合材料方面的研究。本文作者还有仵剑²,李艳霞¹,李敏¹和张佐光¹。

STUDY OF THE EFFECTS OF PROCESSING CONDITIONS ON VOID DEFECT IN CARBON FIBER/EPOXY COMPOSITES

CHEN Chao¹, ZHANG Ya-ting², GU Yi-zhuo^1*, ZHANG Hua-ting²

1. Key Laboratory of Aerospace Advanced Materials and Performance (Ministry of Education),School of Materials Science and Engineering, Beihang University, Beijing 100191, China;
2. Aerospace Research Institute of Materials &Processing Technology, Beijing 100076, China

Received:2013-01-03 Online:2014-05-28 Published:2021-09-14

摘要/Abstract

摘要： 针对复合材料热压工艺建立了一套可以研究孔隙形成规律的工艺实验模拟装置,采用该装置考查了成型压力、加压点、吸胶方式、试样厚度等因素对孔隙的影响。结果表明,所建立的研究方法可以获取孔隙与工艺因素的关联规律;对于MT300/603碳纤维/环氧预浸料,成型压力的增大与加压点温度的降低都可以降低孔隙率与孔隙尺寸,但压力对于孔隙率的消除效果更明显;孔隙消除机理中的树脂流动带出气泡起主要作用,而压力的压溃和排气作用起次要作用;铺层厚度对孔隙形成有明显影响。研究结果对于热压工艺复合材料孔隙缺陷的控制提供了重要的研究手段和实验依据。

关键词: 复合材料, 热压工艺, 预浸料, 孔隙

Abstract: A experimental simulation system for composites in hot pressing process was established for studying void formation evolution. By means of this system, the effects of molding pressure, pressure applying moment, bleeding mode and sample thickness on void were investigated. The results indicate that the simulation system can be used to obtain the relationship between void and processing factors. For MT300/603 carbon fiber/epoxy prepreg, increasing molding pressure and decreasing pressure applying temperature can reduce porosity and void size, and the molding pressure is more obvious for eliminating void. Moreover, resin flow plays an important role in void elimination mechanism rather than pressure squashing and venting effects. Thickness of prepreg stack has significant effect on void formation. These results provide important studying method and experimental evidences for void defect control in composites for hot pressing process.

Key words: composites, hot pressing process, prepreg, void

中图分类号:

TB332

陈超, 张娅婷, 顾轶卓, 张华婷. 碳纤维/环氧复合材料孔隙缺陷的工艺影响因素研究[J]. 复合材料科学与工程, 2014, 0(5): 51-55.

CHEN Chao, ZHANG Ya-ting, GU Yi-zhuo, ZHANG Hua-ting. STUDY OF THE EFFECTS OF PROCESSING CONDITIONS ON VOID DEFECT IN CARBON FIBER/EPOXY COMPOSITES[J]. COMPOSITES SCIENCE AND ENGINEERING, 2014, 0(5): 51-55.

参考文献

[1] 沈军,谢怀勤. 航空用复合材料的研究与应用进展[J]. 玻璃钢/复合材料, 2006, (5): 48-54.
[2] 张元明,赵鹏飞,何颖等. 热压罐成型小型无人机机体结构用复合材料[J]. 玻璃钢/复合材料, 2005, (2): 53-56.
[3] 何楠,杨加斌,高峰. 先进复合材料在军用无人机上的应用动向[J]. 玻璃钢/复合材料, 2013, (2): 94-97.
[4] 张立功,张佐光. 先进复合材料中主要缺陷分析[J]. 玻璃钢/复合材料, 2001, (2): 42-45.
[5] 盛磊. 纤维复合材料中孔隙的起因评述[J]. 航天返回与遥感, 1996, (2): 42-53.
[6] De Almeida S F M, Neto Z D S N. Effect of void content on the strength of composite laminates[J]. Composite Structures, 1994, 28(2): 139-148.
[7] 汪赫男,张佐光,顾轶卓等. 环氧复合材料层板热压成型孔隙缺陷影响因素[J]. 复合材料学报, 2007, (5): 55-60.
[8] 张阿樱,张东兴,李地红,肖海英,贾近. 碳纤维/环氧树脂层压板的孔隙问题[J]. 宇航材料工艺, 2011, (3): 16-19.
[9] 张阿樱,张东兴,朱洪艳等. 碳纤维/环氧树脂层压板孔隙率及力学性能的试验表征[J]. 玻璃钢/复合材料, 2011, (1): 24-28.
[10] 华志恒,周晓军,刘继忠. 碳纤维复合材料(CFRP)孔隙的形态特征[J]. 复合材料学报, 2005, (6): 103-107.
[11] Loos A C, Springer G S. Curing of epoxy matrix composites[J]. Journal of composite materials, 1983, 17(2): 135-169.
[12] Tang J, Lee W I, Springer G S. Effects of cure pressure on resin flow, voids, and mechanical properties[J]. Journal of composite materials, 1987, 21(5): 421-440.
[13] 刘玲,张博明,王殿富. 碳/环氧复合材料孔隙问题研究进展[J]. 宇航材料工艺, 2004, (6): 6-10.
[14] 王科,顾轶卓,李敏等. 零吸胶工艺复合材料层板成型质量与预浸料特性关联分析[J]. 玻璃钢/复合材料. 2011, (3): 28-33.
[15] 孙凯,李敏,顾轶卓等. 热压罐零吸胶工艺树脂压力在线测试及其变化规律[J]. 复合材料学报, 2010, (4): 94-99.
[16] 徐骥威,李敏,顾轶卓等. 热固性树脂中孔隙形成条件的定量测试方法与影响因素[J]. 复合材料学报, 2008, (2): 52-56.
[17] 刘洪新,张佐光,顾轶卓等. 单向纤维布可压缩性的实验研究[J]. 复合材料学报, 2006, (3): 5-9.