变密度预制体对C/C复合材料CVI工艺的影响  

Effect of carbon fiber preform with variable density on CVI process of carbon/carbon composite

作　　者：张洁[1] 卢雪峰[1] 曹海建[1] 孙洁[1] 钱坤[1] 

机构地区：[1]江南大学纺织服装学院,无锡214122

出　　处：《化工新型材料》2015年第12期33-35,共3页New Chemical Materials

基　　金：江苏省产学研前瞻性联合研究项目(BY2013015-32);中央高校基本科研业务费专项资金资助(JUSRP1045)

摘　　要：用密度梯度变化的变密度预制体通过化学气相渗透法(CVI)制备C/C复合材料,并研究了这种预制体结构对CVI工艺的影响。结果表明:对于相同平均密度的普通针刺预制体和变密度预制体,后者制备C/C复合材料的增密速率较快,且材料表面孔隙不易堵塞,无需经过表面处理过程。The needled carbon fibre preform with variable density was used to prepare carbon/carbon composites using chemical vapor infiltration（CVI）.The influence of preform on the process of chemical vapor infiltration（CVI）of composites was also studied.The results showed that,compared with the traditional needle-punched preform,the needled carbon fibre preform with variable density had higher rate of CVI process and less choke points in CVI process,without surface machining process.

关 键 词：变密度 预制体 C/C复合材料 力学性能 CVI 

分 类 号：TB332[一般工业技术—材料科学与工程]