Gel-melting method for preparation of organically modified siloxane low-melting glasses
Gel-melting method for preparation of organically modified siloxane low-melting glasses
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DOI：
10.1557/jmr.2005.0151
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发表时间：
2005-05-01
影响因子：
2.7
通讯作者：
Yoko, T
中科院分区：
文献类型：
--
作者：
Masai, H;Takahashi, M;Yoko, T
研究了RSiO3/2和R2SiO2/2（R：甲基和苯基）体系中有机改性硅氧烷杂化凝胶和玻璃的软化或熔融行为，以获得一类新的低熔点玻璃。 RSiO3/2和RSiO3/2 R2SiO2/2凝胶表现出软化温度在50-100℃左右。在软化温度以上熔化相应凝胶得到的RSiO3/2单组分玻璃的软化温度通过200℃热处理而升高，最终没有表现出软化行为。另一方面，在 PhSiO3/2 Ph2SiO2/2 二元玻璃中，经过 200 小时较长的热处理后，软化温度呈现饱和趋势。这些事实表明，目前的有机改性硅氧烷体系将成为低熔点玻璃的潜在候选者。
Softening or melting behavior of the organically-modified siloxane hybrid gels and glasses in the system of RSiO3/2 and R2SiO2/2 (R: methyl and phenyl) has been investigated to obtain a new family of low-melting glasses. The RSiO3/2 and RSiO3/2 R2SiO2/2 gels showed softening temperatures around 50-100 degrees C. The softening temperature of RSiO3/2 single-component glasses, which were obtained by melting the corresponding gels at a temperature above the softening temperature, increased by heat-treatment at 200 degrees C, and finally showed no softening behavior. On the other hand, in the PhSiO3/2 Ph2SiO2/2 binary glasses, the softening temperatures showed a tendency to saturate after longer heat treatment over 200 h. These facts indicate that the present organically modified siloxane system will be a potential candidate for the low-melting glass.