碳布铺层方式对C/C-SiC薄壁喉衬性能的影响
王玲玲",2
纪伶伶12
嵇阿琳1,2
间联生1,2
（1西安航天复合材料研究所，西安710025）
韩明3
（2高性能碳纤维制造及应用国家地方联合工程研究中心，西安710089）
(3中国人民解放军驻210所军事代表室，西安710000）
文摘通过CVI+PIP制备了准三维针刺C/C-SiC薄壁喉村，预制体碳布铺层方式分别采用与喉衬内型面形状相同的仿形铺层以及与喉村入口端角度相同30°铺层。研究了两种铺层方式对最终构件层间弯曲性能、整体承压性能以及抗烧蚀抗冲剧的影响。结果表明，构件的弯曲强度分别为205和152MPa；水压爆破压力分别为6.5和4.9MPa。用与材料表面夹角为30°的氧乙炔气流考查材料的抗烧蚀及冲刷性能，同角度铺层成型材料抗冲刷能力明显较好，200s其线烧蚀率为仿形铺层成型材料的70%。
关键词针刺，铺层方式,C/C-SiC复合材料，性能
中图分类号：TB332
DOI:10.3969/j. issn.10072330.2014.03.013
EffectofCarbonClothSpreadingMeansonPerformanceof
C/C-SiC Thin-Wall Throat
WANG Linglingl-2
JI Lingling'2
JI Alin'2
YAN Liansheng".2
(1 Xi'an Aerospace Composites Research Institute, Xi'an 710025)
HANMing
(2National and Local Union Engineering Research Center of High-Performance Carbon Fiber
Manufacture and Application,Xi"an710089)
(3210 Military Representative Room of Chinese People's Liberation Amy, Xi'an 710000)
AbstractQuasi-three dimensional needled C/C-silicon carbide thin-wall throats were prepared by CVI+PIP combined process. The performs were spreading individually by carbon cloth layers which is copying the inner mould ing surface of the throat and 30° carbon cloth layers which is the same as the entrance angle of the throat. The effect of the two carbon cloth spreading means on the bending performance, integral bearing performance and anti-ablative and erosion properties of C/CSiC components are investigated. Results show that the bending intensity of the compo-nents is 205 MPa and 152 MPa and the hydraulic bursting pressure is 6.5 MPa and 4.9 MPa separately. The ablation properties are investigated using oxyacetylene ablation technique with the angle between the gas flow and material sur-face is 30°. The anti-ablative and anti-erosion properties of 30° carbon cloth spreading composites is excellent. The lin-ear ablation rate is 70% compared to that of carbon cloth copying spreading composites after 200 s ablation time.
Key wordsNeedling,Spreading means,C/CSiC composites,Performance
0引言
C/C-SiC复合材料具有低密度、高强度、耐高温、抗烧蚀和抗冲刷等优异性能，同时具有比C/C复合材料更好的抗氧化性，在固体冲压发动机喷管喉衬上
有广阔的应用前景(1-3)。修国日期：2014-04-03
基金项目：国防重大基础科研项目（c0320110006）
制备C/C-SiC复合材料的增强体有多种，如2D 碳布叠层、2.5D、3D编织结构以及多向编织结构等[4-6]。2D碳布叠层的C/C-SiC复合材料具有较好的面内力学性能，但其层间力学性能低、易分层的缺点限制了其应用范围。多维编织结构显著改善了复合材
作者简介：王玲玲，1985年出生，硕士，工程师，主要从事C/SiC复合材料性能研究。E-mail1985wllzp@sina.com
宇航材料工艺http://www.yhclgy.com2014年第3期万方数据
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