SiC-ZrC陶瓷单组分前驱体树脂的制备与性能  

Synthesis and properties of zirconium-containing preceramic resin for SiC-ZrC ceramics

作　　者：黄传进 王明存[1] 

机构地区：[1]北京航空航天大学化学与环境学院,北京100191

出　　处：《固体火箭技术》2015年第2期291-294,300,共5页Journal of Solid Rocket Technology

摘　　要：通过Wurz-Fittig共缩聚反应合成了锆含量可调的聚锆硅烷树脂，作为SiC-ZrC陶瓷单组分前驱体。聚锆硅烷树脂具有聚合物基复合材料的加工工艺性能，具有热固化性（热固化温度110--200℃），在氩气气氛中于1000-1400℃高温裂解生成SiC-ZrC复相陶瓷（陶瓷产率〉60%）。聚锆硅烷树脂适合陶瓷基复合材料的聚合物浸渍裂解致密工艺（PIP）。基于前驱体聚合物的锆基复相陶瓷在空气中具有突出的耐高温氧化性，可望应用于超高音速大气层飞行器的耐高温、耐氧化陶瓷材料。Novel polyzirconosilane resin was prepared by Wurtz-Fittig copolymerization of amine stablized zirconium chloride, methyldichlorosilane and trimethylchlorosilanes, for the application of single source precursor of SiC-ZrC multicomponent ceramic （zirconium content was easily tailored）.The polyzirconosilane resin was viscous liquid at ambient conditions,and its rehology was readily tailored catering to the composite process of PIP technique（Precursor-Infiltration-and-Pyrolysis）.The polyzirconosilane resin underwent thermal cure at 110-200℃ to form yellowish solid,and the cured polyzirconosilane was transformed to SiC-ZrC monolith at a yield of〉60% at 1 000-1 400℃. The polyzirconosilane derived SiC-ZrC exhibits ultra-high thermo-oxidation resistance in air atmophere at high temperatures.The polyzirconosilane preceramic resin would be an ideal candidate for ultra-high temperature ce-ramics in the applications of oxidation conditions.

关 键 词：SiC-ZrC 陶瓷前驱体 合成 裂解 高温 耐氧化 

分 类 号：V258[一般工业技术—材料科学与工程]