Comparison of ablative and compressive mechanical behavior of several PICA-like ablative materials  

作　　者：ZHANG Jun FANG GuoDong YANG LingWei LI Wei HONG ChangQing MENG SongHe 

机构地区：[1]National Key Laboratory of Science and Technology for Advanced Composites in Special Environments,Harbin Institute of Technology,Harbin 150080,China [2]Hypervelocity Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang 621000,China

出　　处：《Science China(Technological Sciences)》2020年第8期1478-1486,共9页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11672089,11732002&11902333)。

摘　　要：It is significant to compare the ablative and compressive mechanical behavior of different PICA-like materials in the engineering applications.The plasma wind tunnel ablation tests with high-entropy air and CO2 atmospheres,and compressive experiments in the ambient and 150℃,were conducted for three kinds of PICA-like materials(CF/PR-Si,CBCF/PR-SiOC and NQF/PR-Si composites).The traditional carbon/phenolic(C/PR)braided composites were also used for comparison.PICA-like materials have the better thermal insulation than traditional C/PR composite,especially for CBCF/PR-SiOC composite.The ablation behavior of CF/PR-Si and CBCF/PR-SiOC PICA-like materials in the CO2 atmosphere can produce a large amount of SiO2 in the form of coatings,oxide layers and skeletons on the ablated surface,which are greatly different from that in the air atmosphere.The compressive behavior of PICA-like material is greatly depended on the fiber fabrics,and exhibits the large discrete characteristics.The longer fiber in the PICA-like materials plays the role in maintaining the material integrity,while it may increase the thermal conductivity.

关 键 词：PICA-like material ablation property plasma wind tunnel compressive behavior 

分 类 号：TB302[一般工业技术—材料科学与工程]