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Silicone Resin Applications for Ceramic Precursors and Composites

机译：硅树脂在陶瓷前体和复合材料中的应用

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摘要

This article reviews the applications of silicone resins as ceramic precursors. The historical background of silicone synthesis chemistry is introduced to explain the production costs and supply availability of various silicones. Thermal degradation processes of silicones are classified in terms of the main chain structure and cyclic oligomer expulsion process, which determine the resulting ceramic yield and the chemical composition. The high temperature decomposition of Si-O-C beyond 1,400 °C in an inert atmosphere and formation of a protective silica layer on material surfaces beyond 1,200 °C in an oxidative atmosphere are discussed from the viewpoints of the wide chemical composition of the Si-O-C materials. Applications of the resins for binding agents, as starting materials for porous ceramics, matrix sources with impregnation, fiber spinning and ceramic adhesions are introduced. The recent development of the process of filler or cross-linking agent additions to resin compounds is also introduced. Such resin compounds are useful for obtaining thick coatings, MEMS parts and bulk ceramics, which are difficult to obtain by pyrolysis of simple organometallic precursors without additives.
机译：本文回顾了有机硅树脂作为陶瓷前体的应用。介绍了有机硅合成化学的历史背景，以解释各种有机硅的生产成本和供应情况。有机硅的热降解过程按主链结构和环状低聚物排出过程进行分类，这决定了所得的陶瓷收率和化学组成。从Si-OC材料的广泛化学组成的观点出发，讨论了在惰性气氛中超过1400°C时Si-OC的高温分解以及在超过1200°C的氧化气氛中在材料表面上形成保护性二氧化硅层的问题。 。介绍了粘合剂树脂的应用，作为多孔陶瓷的起始材料，含浸基体源，纤维纺丝和陶瓷粘合。还介绍了向树脂化合物中添加填料或交联剂的方法的最新进展。此类树脂化合物可用于获得厚涂层，MEMS零件和块状陶瓷，而这些涂层很难通过简单的有机金属前驱体热解而没有添加剂而难以获得。

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