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6 条记录 (耗时 0.018 秒)

    Low temperature production of high purity fused silica
    1.
    发明授权
    Low temperature production of high purity fused silica 失效
    低温生产高纯度熔融石英

    公开(公告)号：US4059658A

    公开(公告)日：1977-11-22

    申请号：US613202

    申请日：1975-09-15

    申请人： Robert D. Shoup ,  William J. Wein

    发明人： Robert D. Shoup ,  William J. Wein

    IPC分类号： C03B19/12 ,  C03C3/06 ,  C04B35/14

    CPC分类号： C03C3/06 ,  C03B19/12 ,  C04B35/14 ,  C03C2201/02 ,  C03C2203/24 ,  C03C2203/30 ,  C03C2203/34 ,  Y10S65/901

    摘要： The instant invention is directed to the production of high purity fused silica bodies by means of a three-step process. In the first step, various specifically-defined ratios of aqueous alkali metal silicates with colloidal silica or quaternary ammonium silicate are gelled with certain organic reagents. In the second step, the gelled silicate mass is leached in weakly acid solutions to yield bodies of very high porosity, i.e., greater than 50%, with mean pore diameters ranging between about 400A-4000A, but wherein the pore diameters are extraordinarily uniform within a particular body. Lastly, the microporous body is fired briefly at temperatures above about 1350.degree. C. to consolidate the body to a solid transparent fused silica article having alkali metal contents less than 100 parts per million (PPM). The size of the pores, combined with the exceptional uniformity of pore sizes within an individual unit, is vital to achieve crack-free, homogeneous products.

    摘要翻译： 本发明涉及通过三步法生产高纯度熔融石英体。 在第一步中，具有胶体二氧化硅或季铵硅酸盐的碱金属硅酸盐水溶液的各种特定比例用某些有机试剂凝胶化。 在第二步中，将凝胶状硅酸盐物质在弱酸溶液中浸出，以产生非常高孔隙率的物体，即大于50％，平均孔径在约400A-4000A之间，但是其孔径特别均匀 一个特定的身体 最后，在高于约1350℃的温度下短暂地烧结微孔体，以将体固化成具有小于100ppm（PPM）的碱金属含量的固体透明熔融石英制品。 孔的尺寸，加上单个单元内孔径的均匀性是非常重要的，以获得无裂纹的均质产品。

    Method of making controlled-pore silica structures for high temperature insulation
    2.
    发明授权
    Method of making controlled-pore silica structures for high temperature insulation 失效
    制造高温绝缘控制孔二氧化硅结构的方法

    公开(公告)号：US4221578A

    公开(公告)日：1980-09-09

    申请号：US11503

    申请日：1979-02-12

    申请人： Robert D. Shoup ,  William J. Wein

    发明人： Robert D. Shoup ,  William J. Wein

    IPC分类号： C04B28/24 ,  C04B35/14

    CPC分类号： C04B35/14 ,  C04B28/24 ,  Y10S65/901

    摘要： This invention is concerned with the production of porous, essentially alkali metal-free amorphous bodies demonstrating excellent thermal insulating properties and being capable of long term use at temperatures up to 1000.degree. C. The bodies exhibit an average pore diameter of between about 100A-10,000A with at least 80% of the pores coming within .+-.20% of the average pore diameter value. The bodies consist essentially, as expressed in weight percent on the oxide basis, of 0.25-5% of an infrared radiation absorbing metal oxide, 1-10% of an infrared radiation scattering metal oxide, and the remainder SiO.sub.2.

    摘要翻译： 本发明涉及多孔，基本上不含碱金属的无定形体的生产，其表现出优异的绝热性能并且能够在高达1000℃的温度下长期使用。该体表现出平均孔径在约100A-10,000 A，其中至少80％的孔隙在平均孔径值的+/- 20％内。 主体以氧化物的重量百分比表示为红外辐射吸收金属氧化物的0.25-5％，红外辐射散射金属氧化物的1-10％，其余为SiO 2。

    Silica-containing porous bodies of controlled pore size
    3.
    发明授权
    Silica-containing porous bodies of controlled pore size 失效
    可控孔径的含硅多孔体

    公开(公告)号：US4112032A

    公开(公告)日：1978-09-05

    申请号：US859326

    申请日：1977-12-12

    申请人： Paul E. Blaszyk ,  Robert D. Shoup ,  William J. Wein

    发明人： Paul E. Blaszyk ,  Robert D. Shoup ,  William J. Wein

    IPC分类号： B01J21/08 ,  C04B28/24 ,  C04B35/14

    CPC分类号： C04B28/24 ,  B01J21/08 ,  C04B35/14 ,  Y10S65/901

    摘要： This invention relates to the preparation of silica-containing particulate materials and monolithic structures exhibiting high porosity with exceptionally uniform pore size. The bodies are produced through gelation of aqueous alkali metal silicate and/or colloidal silica solutions, optionally contaiing dispersed particulate phases, with organic reagents followed by a leaching step. Uniformity of pore size is achieved through careful control of such variables as the ratio of alkali metal silicate to colloidal silica solutions, the concentration of silica, the amount of dispersed phase employed, and the like.

    摘要翻译： 本发明涉及含二氧化硅的颗粒材料和具有特别均匀孔径的高孔隙率的整体结构的制备。 通过凝胶化水性碱金属硅酸盐和/或胶体二氧化硅溶液，任选地使分散的颗粒相与有机试剂接触，然后进行浸出步骤而产生体。 通过仔细控制诸如碱金属硅酸盐与胶体二氧化硅溶液的比例，二氧化硅的浓度，所用分散相的量等的变量来实现孔径的均匀性。

    Method and apparatus for producing mica film
    4.
    发明授权
    Method and apparatus for producing mica film 失效
    生产云母膜的方法和装置

    公开(公告)号：US4432852A

    公开(公告)日：1984-02-21

    申请号：US350289

    申请日：1982-02-18

    申请人： Francis P. Fehlner ,  William J. Wein

    发明人： Francis P. Fehlner ,  William J. Wein

    IPC分类号： C25D13/02 ,  C25D13/14

    CPC分类号： C25D13/14 ,  C25D13/02

    摘要： A continuous method for making mica film by electrophoresis wherein mica is deposited on an endless moving electrode surface from a mica sol, removed from the sol, dried, and finally stripped from the electrode, and apparatus for use in practicing the method, are described.

    摘要翻译： 描述了通过电泳制造云母膜的连续方法，其中将云母从云母溶胶沉积在环形移动电极表面上，从溶胶中除去，干燥并最终从电极剥离，以及用于实施该方法的装置。