不同预制体结构C/C复合材料轴向热力学性能分析

doi:10.3724/SP.J.1077.2010.00994

无机材料学报 ›› 2010, Vol. 25 ›› Issue (9): 994-998.DOI: 10.3724/SP.J.1077.2010.00994

不同预制体结构C/C复合材料轴向热力学性能分析

嵇阿琳1, 李贺军1, 崔红2, 程文2

(1. 西北工业大学材料学院, 西安710072; 2. 西安航天复合材料研究所, 西安710025)

收稿日期:2009-11-19 修回日期:2010-04-07 出版日期:2010-09-20 网络出版日期:2010-08-25
基金资助:
国家自然科学基金(50832004)

Axial Thermodynamic Performance Analysis of the Different Preform C/C Composites

JI A-Lin¹, LI He-Jun¹, CUI Hong², CHENG Wen²

(1. The Material Institute of Northwestern Polytechnic University, Xi’an 710072, China; 2. Xi’an Aerospace Composites Research Institute, Xi’an 710025, China)

Received:2009-11-19 Revised:2010-04-07 Published:2010-09-20 Online:2010-08-25

摘要/Abstract

摘要：

主要对比了编织C/C复合材料和针刺C/C复合材料的轴向热力学性能. 编织C/C复合材料主要有径棒法、轴棒法、轴向穿刺三种, 针刺C/C复合材料主要有炭布叠层针刺、整体毡两种. 编织预制体密度较高, 平均可达到0.70 g/cm³以上, 针刺类整体毡密度在0.20 g/cm³左右, 炭布叠层预制体密度在0.45 g/cm³左右, 均低于编织预制体. 径棒法、轴棒法、轴向穿刺预制体轴向纤维含量≥19%, 针刺类预制体轴向纤维含量约为5%. C/C复合材料的轴向拉伸强度、热膨胀系数与预制体编织结构、轴向纤维含量有关, 编织类C/C复合材料轴向拉伸强度平均值≥40MPa, 针刺类C/C复合材料轴向拉伸强度在10MPa左右. 轴棒法、轴向穿刺、炭布叠层针刺、整体毡等四种C/C复合材料(RT～800℃)轴向热膨胀系数基本相当.

关键词: C/C复合材料, 预制体, 编织, 针刺, 轴向, 拉伸强度, 热膨胀系数

Abstract:

Axial thermodynamic performance of braid carbon/carbon (C/C) composites and needle C/C composites is compared. Braid C/C composites comprises the radial rod preform composite, the axial rod preform composite and the fine woven punctured preform composite. Needle C/C composites consist of the whole felt preform composites and the carbon clothes/felt layer needling preform composites. The bulk density of the whole felt preform approximates 0.2g/cm³, and the carbon clothes/felt layer needling preform is about 0.45g/cm³. The density of needle preform is less than that of braid perform, which is up to 0.70g/cm³. Axial fiber content of braid preform is more than or equal to 19%, while that of needle preform is only 5%. The axial tensile strength and thermal expansion coefficient are related to the structure of preform and axial fiber content. The average axial tensile strength of braid C/C composites is ≥40MPa, and while the needle C/C composites is around 10MPa. The axial thermal expansion coefficient of the axial rod preform, the fine woven punctured preform, the whole felt preform and the carbon clothes/felt layer needle preform C/C composites is comparative in the range of RT -800℃.

Key words: C/C composites, perform, braid, needle, axial, tensile strength, thermal expansion coefficient

中图分类号:

TB332

嵇阿琳, 李贺军, 崔红, 程文. 不同预制体结构C/C复合材料轴向热力学性能分析[J]. 无机材料学报, 2010, 25(9): 994-998.

JI A-Lin, LI He-Jun, CUI Hong, CHENG Wen. Axial Thermodynamic Performance Analysis of the Different Preform C/C Composites[J]. Journal of Inorganic Materials, 2010, 25(9): 994-998.

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不同预制体结构C/C复合材料轴向热力学性能分析

Axial Thermodynamic Performance Analysis of the Different Preform C/C Composites

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