无机材料学报 ›› 2020, Vol. 35 ›› Issue (10): 1105-1111.DOI: 10.15541/jim20190607 CSTR: 32189.14.10.15541/jim20190607

所属专题: 结构陶瓷论文精选(2020)

• 研究论文 • 上一篇    下一篇

高性能针刺碳/碳复合材料的制备与性能

刘宇峰1,2(),俸翔1,王金明1,许正辉1,李同起1,焦星剑1,王雅雷2,熊翔2   

  1. 1. 航天材料及工艺研究所 先进功能复合材料技术重点实验室, 北京 100076
    2. 中南大学 粉末冶金研究院, 长沙 410083
  • 收稿日期:2019-11-29 修回日期:2019-12-29 出版日期:2020-10-20 网络出版日期:2020-03-06
  • 作者简介:刘宇峰(1989-), 男, 工程师, 博士研究生. E-mail:liuyf123@csu.edu.cn.
  • 基金资助:
    装发共用技术预研项目(41422020106);科工局基础科研项目(HTKJ2019KL703001);装发重点实验室基金项目(61429060102162906002)

Preparation and Properties of High-performance Needled C/C Composites

LIU Yufeng1,2(),FENG Xiang1,WANG Jinming1,XU Zhenghui1,LI Tongqi1,JIAO Xingjian1,WANG Yalei2,XIONG Xiang2   

  1. 1. Science and Technology of Advanced Functional Composites Laboratory, Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China;
    2. Powder Metallurgy Research Institute, Central South University, Changsha 410083, China
  • Received:2019-11-29 Revised:2019-12-29 Published:2020-10-20 Online:2020-03-06
  • About author:LIU Yufeng(1989-), male, engineer, PhD candidate. E-mail:liuyf123@csu.edu.cn
  • Supported by:
    Common Technology Project of Equipment Development Department(41422020106);National Defense Basic Scientific Research Project(HTKJ2019KL703001);Key Laboratory Foundation of Equipment Development Department(61429060102162906002)

摘要:

为获得高性能针刺碳/碳复合材料, 拓展其应用领域, 通过优化针刺工艺参数, 设计并研制了不同结构参数的针刺预制体。采用沥青高压致密化工艺将针刺预制体制备成一系列针刺碳/碳复合材料, 研究了针刺碳/碳复合材料的微观结构、力学性能和热物理性能。结果表明, 针刺预制体的针刺深度、针刺密度以及短/长纤维配比等对碳/碳复合材料的力学性能和热物理性能影响显著。当针刺深度为12 mm、针刺密度为22针/cm 2、短/长纤维比例为1.0 : 4.8时, 针刺碳/碳复合材料表现出优良的综合性能, 拉伸、压缩、弯曲、面内剪切和层间剪切强度分别达到207、228、285、54和28 MPa。

关键词: 碳/碳复合材料, 针刺结构参数, 力学性能, 热物理性能

Abstract:

To obtain high performance needled C/C composites, a series of needled non-woven carbon fiber felt with different characteristics was prepared. The needled C/C composites were prepared by means of high-pressure impregnation-carbonization, and their microstructure features, mechanical properties and thermo-physical properties of needled C/C composites were characterized. The investigation results show that the types of preform structure have obvious effects on the mechanical and thermo-physical properties of the C/C composites. When the preform is produced with key characteristics of needling depth at 12 mm, needling density at 22 pin/cm 2 and fiber web/weft less ply at 1.0:4.8, the needle C/C composites shows excellent comprehensive performance, with tensile strength, compression strength, flexural strength, in-plane shear strength, and interlaminar shear strength of 207, 228, 285, 54 and 28 MPa, respectively.

Key words: C/C composite, needling characteristic, mechanical property, thermo-physical property

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