沥青及织物结构对C/C复合材料致密化的影响  

Influence of Impregnated Pitch and Fabric Architecture on Densification of C/C Composites

作　　者：杨晓光[1] 王俊山[1] 尚尔超 

机构地区：[1]航天材料及工艺研究所先进功能复合材料技术国防科技重点实验室,北京100076 [2]鞍山热能研究院,鞍山114004

出　　处：《宇航材料工艺》2004年第6期27-32,57,共7页Aerospace Materials & Technology

摘　　要：选取四种不同软化点的浸渍剂沥青和四种不同结构织物,采用低压浸渍-常压碳化的致密化工艺,制备C／C复合材料。结果表明:浸渍剂种类和织物结构对致密化效果都有影响,并指明造成传统工艺致密化效率低下的主要原因是碳化时沥青的流淌。C/C composites are fabricated using the processing of low press impregnation and normal press carbonization , with selection of four pitches and four fabrics which have different softening points and architectures, respectively. The effect of different pitches and fabrics on densification is studied. Experimental resulst indicate that the densification is influenced by both impregnant pitch and fabric architecture. It is also shown that the primary factor affecting densification efficiency in traditional liquid-phase pyrolysis processing is the overflowing of the pitch in carbonization.

关 键 词：致密化工艺 浸渍剂沥青 碳化 制备 软化点 低压 常压 C/C复合材料 

分 类 号：V257[一般工业技术—材料科学与工程] TB332[航空宇航科学与技术—航空宇航制造工程]