Process for producing silica glass
    3.
    发明授权
    Process for producing silica glass 失效
    石英玻璃生产工艺

    公开(公告)号:US5871558A

    公开(公告)日:1999-02-16

    申请号:US794620

    申请日:1997-02-03

    IPC分类号: C03B8/02 C03C1/00

    CPC分类号: C03C1/006

    摘要: A silica glass production process that can prevent cracks from occurring during the step of gel drying. In a process for producing silica glass, comprising the steps of subjecting a partial polycondensation product of alkoxysilane to hydrolysis in the presence of a solvent, an organic polymeric compound and a basic catalyst to form a sol, making the sol into a gel, drying the gel to form a dry gel, and firing the dry gel to obtain a glass, a salt is caused to exist in a concentration not less than 1.times.10.sup.-4 mol based on 100 g of the partial polycondensation product of alkoxysilane in the step of subjecting the partial polycondensation product of alkoxysilane to hydrolysis to form a sol.

    摘要翻译: 可以防止在凝胶干燥步骤期间发生裂纹的二氧化硅玻璃制造工艺。 在制造石英玻璃的方法中,包括以下步骤:在溶剂,有机聚合物和碱性催化剂的存在下使烷氧基硅烷的部分缩聚产物进行水解以形成溶胶,使溶胶变成凝胶,干燥 凝胶形成干凝胶,烧成干燥凝胶得到玻璃,在将100g的烷氧基硅烷的部分缩聚物的100g处理后,使盐以不低于1×10 -4 mol的浓度存在 部分缩聚产物的烷氧基硅烷水解形成溶胶。