新型锆硅复相陶瓷先驱体的制备及性能

发布时间：2018-03-10 16:04

  本文选题：先驱体　切入点：耐高温陶瓷　出处：《固体火箭技术》2016年04期 　论文类型：期刊论文

【摘要】：将四-二乙氨基锆(TDEAZ)和乙炔基苯胺封端的聚碳硅氮烷(PCSN)进行液相共混,制备含有Zr、Si元素的新型复相陶瓷先驱体(ZPCSN),并通过FT-IR对其结构进行表征,利用DSC与TGA分别探讨其固化行为及耐热性能;并通过XRD与EDS研究ZPCSN的陶瓷先驱体、耐高温陶瓷。陶瓷化性能结果表明,ZPCSN结构中含有C≡C键,在固化过程中交联形成致密的三维网状结构,赋予ZPCSN优异的耐热性能;在1 600℃氩气氛围中,ZPCSN裂解形成Zr C/Zr N/Si C/Si3N4多元复相陶瓷,保留率为67.92%,这表明ZPCSN具有优异的陶瓷化性能。
[Abstract]:Tetra-diethylamino-zirconium (TDEAZ) was blended with acetylaniline-capped polycarbosilysiloxane (PCSNN) in liquid phase to prepare a new multiphase ceramic precursor containing Zr-Si and its structure was characterized by FT-IR. The curing behavior and heat resistance of ZPCSN were studied by DSC and TGA, and the ceramic precursors of ZPCSN were studied by XRD and EDS. During the curing process, ZPCSN was crosslinked to form a dense three-dimensional network structure, which gave ZPCSN excellent heat resistance, and ZPCSN was pyrolyzed at 1 600 鈩，

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