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1.
公开(公告)号:US4981820A
公开(公告)日:1991-01-01
申请号:US386327
申请日:1989-07-28
CPC分类号: C03C11/00 , Y10S264/17 , Y10S264/48 , Y10S264/77
摘要: Cellular glass structures are made by foaming select silicone resins. A foaming agent is reacted together with the silicone resin to form a foam that carries the resin as a continuous separate phase distributed throughout the foam. The foaming agent is removed by decomposition, and the remaining silicone resin is crosslinked to retain the foamed structure. The silicone resin is then heated in a non-oxidizing atmosphere at a temperature that will pyrolize the resin. During pyrolysis, the resin densifies to foam a unique glass composition comprised of silicon, oxygen and carbon, where carbon is chemically bonded to silicon, but there are essentially no chemical bonds between carbon and oxygen.
摘要翻译: 泡沫玻璃结构通过发泡选择性硅树脂制成。 发泡剂与硅树脂一起反应以形成泡沫,其携带树脂作为分布在整个泡沫中的连续分离相。 通过分解除去发泡剂,并将剩余的硅氧烷树脂交联以保持发泡结构。 然后将硅树脂在非氧化性气氛中,在将树脂热解的温度下加热。 在热解期间,树脂致密化以发泡由硅,氧和碳构成的独特的玻璃组合物,其中碳与硅化学键合,但是碳和氧之间基本上没有化学键。
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公开(公告)号:US5180694A
公开(公告)日:1993-01-19
申请号:US574879
申请日:1990-08-30
CPC分类号: C03C3/076 , C03C11/00 , C03C13/00 , C03C14/002 , C03C3/045 , C03C3/062 , C03C2214/02 , C03C2214/03 , C03C2214/30
摘要: Methyl silicone resins are pyrolized in a non-oxidizing atmosphere to form a translucent glass comprised of silicon, oxygen and carbon where silicon atoms are chemically bonded to carbon and oxygen atoms, but there are essentially no chemical bonds between carbon and oxygen atoms. The translucent silicon-oxy-carbide glasses of this invention resist devitrification and decomposition in oxidizing or reducing atmospheres at temperatures of about 1250.degree. C. or greater. Methods for forming silicon-oxy-carbide glass articles are disclosed, along with specific methods for forming silicon-oxy-carbide glass fibres, composites, and cellular structures.
摘要翻译: 甲基硅氧烷树脂在非氧化性气氛中进行热解,以形成由硅,氧和碳组成的半透明玻璃,其中硅原子与碳和氧原子化学键合,但碳和氧原子之间基本上没有化学键。 本发明的半透明硅 - 碳化碳玻璃在约1250℃或更高的温度下,在氧化或还原气氛中抗失真和分解。 公开了形成硅 - 碳化硅玻璃制品的方法以及形成硅 - 碳化硅玻璃纤维,复合材料和蜂窝结构的具体方法。
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