Synthesis of a minute SiC product from polyvinylsilane with radiation curing Part I Radiation curing of polyvinylsilane
Synthesis of a minute SiC product from polyvinylsilane with radiation curing Part I Radiation curing of polyvinylsilane
复制标题
辐射固化聚乙烯硅烷合成微小 SiC 产品第 I 部分聚乙烯硅烷的辐射固化
DOI：
10.1023/b:jmsc.0000040077.94183.ac
复制
发表时间：
2004
影响因子：
4.5
通讯作者：
M. Itoh
中科院分区：
文献类型：
--
作者：
A. Idesaki;M. Sugimoto;Shigeru Tanaka;M. Narisawa;K. Okamura;M. Itoh
研究了γ-射线对液态有机硅聚合物--聚乙烯基硅烷的辐照效应，探讨了辐射固化合成微细碳化硅制品的最佳固化条件。以室温和液氮温度(77K)为辐照温度。在这两种情况下，均可在真空下用γ射线照射得到保持其成型形状的固化PVS，而用3~4mGy光照射可获得室温固态固化PVS。结果表明，室温辐照下的交联效率高于77K辐照下的交联效率。注射到模具中的PVS在真空下用3.6mGy室温γ射线辐照，1273K下在Ar气氛中热解。结果得到了与模具形状相似、尺寸为30~60μm的细小碳化硅制品。
Irradiation effect of γ-ray on polyvinylsilane (PVS), which is a liquid organosilicon polymer, was investigated and the optimum curing condition to synthesize a minute SiC product with radiation curing was discussed. Room temperature and liquid nitrogen temperature (77 K) were examined as the irradiation temperature. In both cases, the cured PVS maintaining its formed shape could be obtained by γ-ray irradiation under vacuum, and the cured PVS in solid state at room temperature was obtained by irradiation with dose of above 3–4 MGy. It was found that the efficiency of crosslinking in case of the irradiation at room temperature is higher than that in case of irradiation at 77 K. The PVS injected into a mold was irradiated by γ-ray with dose of 3.6 MGy at room temperature under vacuum, and pyrolyzed at 1273 K in Ar gas atmosphere. As a result, minute SiC products which had similar shapes to the mold and the sizes of 30–60 μm were obtained.