BaTiO3改性对碳/碳复合材料力学性能的影响

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (3): 1002-1011.

BaTiO₃改性对碳/碳复合材料力学性能的影响

王化中, 杨宇, 夏莉红, 尹成, 朱学宏, 丰雪帆, 张福勤

中南大学粉末冶金研究院,长沙 410083

收稿日期:2021-03-05 修回日期:2021-09-06 出版日期:2022-03-15 发布日期:2022-04-08
通讯作者: 张福勤,博士,教授。E-mail:zhangfuqin@csu.edu.cn
作者简介:王化中(1996—),男,硕士研究生。主要从事碳/碳复合材料方向的研究。E-mail:1256373189@qq.com
基金资助:
湖南省自然科学基金青年基金(2019JJ50815);中国博士后科学基金(2018M632987)

Effect of BaTiO₃ Modification on Mechanical Properties of Carbon/Carbon Composites

WANG Huazhong, YANG Yu, XIA Lihong, YIN Cheng, ZHU Xuehong, FENG Xuefan, ZHANG Fuqin

Powder Metallurgy Research Institute, Central South University, Changsha 410083, China

Received:2021-03-05 Revised:2021-09-06 Online:2022-03-15 Published:2022-04-08

摘要/Abstract

摘要： 以聚丙烯腈(PAN)基碳纤维无纬布和短切网胎纤维交互叠层针刺,在预制体制备过程中掺杂0%、5%、15%、25%和35%五种不同质量分数的BaTiO₃,制备得到纵向纤维排布环形碳纤维预制体,通过化学气相沉积(CVD)和液相浸渍相结合的方法,制备得到BaTiO₃改性碳/碳复合材料。对该复合材料进行垂直和平行两个方向的力学性能测试,并且观察断口处的组织结构及其形貌特征。结果表明,引入纳米BaTiO₃后,加快了热解碳形核与生长的过程,改变了热解碳的组织结构,由单一的光滑层组织结构转变为光滑层和粗糙层两种组织结构。随着BaTiO₃含量的增加,复合材料的垂直压缩强度先基本不变后逐渐增大,平行压缩强度先增大后减小。复合材料的垂直压缩断裂方式均为脆性断裂,平行压缩断裂方式也均为脆性断裂同时呈现层间断裂的特征。

关键词: 碳/碳复合材料, BaTiO₃, 垂直压缩, 平行压缩, 脆性断裂, 层间断裂

Abstract: Using polyacrylonitrile (PAN) based carbon fiber weft free cloth and short-cut mesh fiber interactive laminated acupunture, the BaTiO₃ with different mass fractions (0%, 5%, 15%, 25% and 35%) was introduced in the preparation process to prepare the longitudinal fiber arranged ring carbon fiber preforms. The method of chemical vapor deposition (CVD) and liquid phase impregnation was combined. BaTiO₃ modified carbon/carbon composites were prepared. The mechanical properties of the composite were tested in both vertical and parallel directions, and the microstructure and morphological characteristics of the fracture were observed. The results show that the introduction of nano-BaTiO₃ accelerates the nucleation and growth of pyrolytic carbon, and changes the structure of pyrolytic carbon, the single smooth layer is transformed into smooth layer and rough layer. With the increase of BaTiO₃ content, the vertical compressive strength of the composite is basically unchanged first and then gradually increases, while the parallel compressive strength first increases and then decreases. The fracture mode of the composite under vertical compression is brittle fracture, and the fracture mode under parallel compression is brittle fracture with the characteristics of interlaminar fracture.

Key words: C/C composite, BaTiO₃, vertical compression, parallel compression, brittle fracture, interlaminar fracture

中图分类号:

TB332

王化中, 杨宇, 夏莉红, 尹成, 朱学宏, 丰雪帆, 张福勤. BaTiO₃改性对碳/碳复合材料力学性能的影响[J]. 硅酸盐通报, 2022, 41(3): 1002-1011.

WANG Huazhong, YANG Yu, XIA Lihong, YIN Cheng, ZHU Xuehong, FENG Xuefan, ZHANG Fuqin. Effect of BaTiO₃ Modification on Mechanical Properties of Carbon/Carbon Composites[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(3): 1002-1011.

参考文献

[1] LUO R Y, LIU T, LI J S, et al. Thermophysical properties of carbon/carbon composites and physical mechanism of thermal expansion and thermal conductivity[J]. Carbon, 2004, 42(14): 2887-2895.
[2] 李翠云,李辅安.碳/碳复合材料的应用研究进展[J].化工新型材料,2006,34(3):18-20.
LI C Y, LI F A. Study on application of carbon/carbon composites[J]. New Chemical Materials, 2006, 34(3): 18-20 (in Chinese).
[3] SU J M, ZHOU S J, LI R Z, et al. A review of carbon-carbon composites for engineering applications[J]. Carbon, 2015, 93: 1081.
[4] 杨彩云,胡振英.三维机织C/C复合材料的摩擦磨损性能[J].中国有色金属学报,2009,19(1):70-76.
YANG C Y, HU Z Y. Friction and wear properties of 3D woven reinforced C/C composites[J]. The Chinese Journal of Nonferrous Metals, 2009, 19(1): 70-76 (in Chinese).
[5] LU X F, XIAO P. Preparation of in situ grown silicon carbide nanofibers radially onto carbon fibers and their effects on the microstructure and flexural properties of carbon/carbon composites[J]. Carbon, 2013, 59: 176-183.
[6] CHOY K L. Chemical vapour deposition of coatings[J]. Progress in Materials Science, 2003, 48(2): 57-170.
[7] CHEN J X, HUANG B Y. Microstructure of carbon fiber preform and distribution of pyrolytic carbon by chemical vapor infiltration[J]. Transactions of Nonferrous Metals Society of China, 2004, 14(4): 733-737.
[8] 邹林华,黄勇,黄伯云,等.C/C复合材料的显微结构及其与工艺、性能的关系[J].新型炭材料,2001,16(4):63-70.
ZOU L H, HUANG Y, HUANG B Y, et al. The relationship among microstructures, processing parameters and properties for carbon-carbon composites[J]. New Carbon Materials, 2001, 16(4): 63-70 (in Chinese).
[9] CHEN J X, XIONG X, HUANG Q Z, et al. Densification mechanism of chemical vapor infiltration technology for carbon/carbon composites[J]. Transactions of Nonferrous Metals Society of China, 2007, 17(3): 519-522.
[10] DELHAES P. Chemical vapor deposition and infiltration processes of carbon materials[J]. Carbon, 2002, 40(5): 641-657.
[11] LI H J, XU G Z, LI K Z, et al. The infiltration process and texture transition of 2D C/C composites[J]. Journal of Materials Science & Technology, 2009, 25(1): 109-114.
[12] 焦华.BaTiO₃/Ca₁₀(PO₄)₆(OH)₂纳米复合材料的可控制备及其陶瓷块体的性能研究[D].西安:西安理工大学,2018.
JIAO H. Controllable preparation of BaTiO₃/Ca₁₀(PO₄)₆(OH)₂ nanocomposites and research of its ceramic blocks[D]. Xi'an: Xi'an University of Technology, 2018 (in Chinese).
[13] 鲍婕,李盛涛,邹晨.BaTiO₃晶粒尺寸效应及其微观机理的研究进展[J].材料导报,2005(F05):143-146.
BAO J, LI S T, ZOU C. Progress in research on size effect and its mechanism of BaTiO₃[J]. Materials Review, 2005(F05): 143-146 (in Chinese).
[14] 程忠俭,常玉普,陈英军.电子级高纯钛酸钡的生产[J].无机盐工业,2010,42(9):43-45.
CHENG Z J, CHANG Y P, CHEN Y J. Production of electronic-grade high purity barium titanate[J]. Inorganic Chemicals Industry, 2010, 42(9): 43-45 (in Chinese).

BaTiO₃改性对碳/碳复合材料力学性能的影响

Effect of BaTiO₃ Modification on Mechanical Properties of Carbon/Carbon Composites

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