公开(公告)号：US20060218970A1

公开(公告)日：2006-10-05

申请号：US10549681

申请日：2004-03-12

申请人： Giulio Boara ,  Simone Pedretti ,  Andreas Rückemann ,  Massimo Sparpaglione

发明人： Giulio Boara ,  Simone Pedretti ,  Andreas Rückemann ,  Massimo Sparpaglione

IPC分类号： C03B37/016 ,  C03B8/00 ,  B29B7/00 ,  C04B35/03

CPC分类号： C04B35/14 ,  C03B19/12 ,  C04B35/624 ,  C04B35/6268 ,  C04B2235/3287 ,  C04B2235/441 ,  C04B2235/444 ,  C04B2235/6023 ,  C04B2235/606 ,  Y02P40/57

摘要： Particularly shaped articles constituted by silicon oxide, as such or with suitable additives, prepared by room temperature molding according to a process comprising: preparation of a sol starting from a silicon alcoxide, or from a silicon alcoxide and at least a precursor of at least one of the additional elements; hydrolysis of the sol obtained thereby; addition of colloidal silica; pouring the resulting mixture into the desired mould; sol gelling and fast removal of the solid product; gel drying; gel densification by means of a thermal treatment at temperature ranging from 900 ° C to 1500 ° C. The articles can be used as preforms for the optic fiber spinning.

摘要翻译： 由氧化硅本身或与适当的添加剂构成的特殊成型制品通过室温成型制备，所述方法包括：从硅烷醇或硅烷醇硅烷和至少一种至少一种的前体制备溶胶 的附加要素; 由此获得的溶胶水解; 加入胶体二氧化硅; 将所得混合物倒入所需的模具中; 溶胶凝胶和快速去除固体产品; 凝胶干燥; 通过在900℃至1500℃的温度范围内的热处理进行凝胶致密化。制品可用作光纤纺丝的预制件。