碳纤维三维编织预制体渗透特性实验研究

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文章编号： 1672-6987（2024）01-0077-08； DOI： 10.16351/j.1672-6987.2024.01.011

周胜兵1， 姜又强1， 宁慧铭1*， 胡宁1, 2， 刘强3（1. 重庆大学 航空航天学院， 重庆 400044； 2. 河北工业大学 机械工程学院； 电工装备可靠性与智能化

国家重点实验室， 天津 300130； 3. 中航工业集团复合材料技术中心， 北京 101300）

摘要： 针对航空发动机风扇机匣用碳纤维三维编织复合材料，开展了预制体材料渗透特性的实验研究。实验模具为厚度可调的长方体中空结构。通过分析液体在厚度和孔隙率不同的4种三维编织预制体内的渗透过程，结果表明，所有预制体在面内的渗透主向与编织的轴/横向平行，且轴向渗透率约为横向渗透率值的32倍。液体在A预制体内的渗透性最好，其轴向、横向和厚度方向的渗透率值分别为1136×10-10、4259×10-11和5900×10-12m2，厚度方向上的渗透率远小于面内渗透率，差距在1~2个数量级。液体在预制体内3个方向上的渗透是相互影响的过程，预制体厚度方向上的渗透特性影响了面内的渗透特性。

关键词： 三维编织预制体； 渗透率； 厚度； 空隙率； 碳纤维复合材料

中图分类号： TB 33文献标志码： A

引用格式： 周胜兵， 姜又强， 宁慧铭， 等. 碳纤维三维编织预制体渗透特性实验研究［J］. 青岛科技大学学报(自然科学版), 2024, 45(1): 77-84.

ZHOU Shengbing, JIANG Youqiang, NING Huiming, et al. Experimental research on permeability characteristics of carbon fiber three-dimensional woven preform［J］. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2024， 45（1）： 77-84.

Experimental Research on Permeability Characteristics of Carbon Fiber

Three-Dimensional Woven Preform

ZHOU Shengbing1, JIANG Youqiang1, NING Huiming1, HU Ning1, 2, LIU Qiang3

（1. College of Aerospace Engineering, Chongqing University, Chongqing 400044, China;

2. School of Mechanical Engineering； State Key Laboratory of Reliability and Intelligence

Electrical Equipment, Hebei University of Technology, Tianjin 300401, China;

3. AVIC Composite Technology Center, Beijing 101300, China）

Abstract: Aiming at the carbon fiber three-dimensional braided composite material for the aero-engine fan case, the experimental research on the permeability characteristics of the preform material has been carried out. The experimental mold was a rectangular hollow structure, and the distance in the thickness direction was adjustable. By analyzing the permeation process of liquid in four kinds of three-dimensional braided preforms with different thickness and porosity, the results show that the in-plane permeation main direction of all preforms is parallel to the axis/transverse direction of the braid, and the axial permeability is about 32 times the value of the lateral permeability. The permeability of the liquid in the A preform is the best, and the permeability values in the axial, transverse and thickness directions are 1136×10-10, 4259×10-11 and 5900×10-12m2, respectively. The permeability in the thickness direction is much smaller than the in-plane permeability, and the difference is 1-2 orders of magnitude. The permeation of liquid in three directions in the preform is a process of mutual influence, and the permeation characteristics in the thickness direction of the preform affect the permeation characteristics in the plane.

Key words: three-dimensional woven preform; permeability; thickness; porosity; carbon fiber composite

收稿日期： 2023-01-01

基金项目： 国家“两机”重大专项基础研究项目（2017-Ⅶ-0011-0106）.

作者简介： 周胜兵（1992-），男，助理研究员.*通信联系人.