Pulverulent borosilicate composition and a method of making a cellular
borosilicate body therefrom
    32.
    发明授权
    Pulverulent borosilicate composition and a method of making a cellular borosilicate body therefrom 失效
    粉煤硼硅酸盐组合物及其制备细胞硼硅酸盐体的方法

    公开(公告)号:US4119422A

    公开(公告)日:1978-10-10

    申请号:US877888

    申请日:1978-02-15

    Applicant: David Rostoker

    Inventor: David Rostoker

    Abstract: An aqueous slurry comprising an intimate mixture of colloidal silica, (preferably an amorphous, precipitated, hydrated silica), caustic potash, boric acid and alumina is first prepared and then dried. The dried aggregates are thereafter crushed, calcined and rapidly quenched. It is preferred to dry the slurry in a spray drier and thereafter omit crushing after drying and to calcine the dried admixture by means of a plasma arc so that the mixture is rapidly quenched after calcination. The calcined mixture is introduced into a crusher, such as a ball mill, with a carbonaceous cellulating agent and reduced to a fine pulverulent material. The pulverulent material is then cellulated in a cellulating furnace to form cellular borosilicate bodies. Where desired, the calcined material may be utilized as a ceramic frit.

    Abstract translation: 首先制备包含胶体二氧化硅(优选无定形的,沉淀的,水合二氧化硅),苛性钾,硼酸和氧化铝的紧密混合物的含水浆料,然后干燥。 然后将干燥的聚集体压碎,煅烧并快速骤冷。 优选在喷雾干燥器中干燥浆料,然后在干燥后省略破碎并通过等离子体电弧煅烧干燥的混合物,使得混合物在煅烧后快速淬火。 将煅烧的混合物用含碳细胞剂引入破碎机如球磨机中并还原成细粉状材料。 然后将粉状材料在细胞培养炉中细胞化以形成细胞硼硅酸盐体。 如果需要,煅烧材料可以用作陶瓷玻璃料。

    Method for manufacturing porous-glass material for optical fiber, and glass base material
    35.
    发明申请
    Method for manufacturing porous-glass material for optical fiber, and glass base material 审中-公开
    制造光纤用多孔玻璃材料的方法以及玻璃基材

    公开(公告)号:US20070051135A1

    公开(公告)日:2007-03-08

    申请号:US11513103

    申请日:2006-08-31

    Abstract: A method for manufacturing a porous-glass material for optical fiber performed in a reaction apparatus having a plurality of burners for producing glass particles toward a initial base material and a ventilation mechanism at a position opposed to the plurality of burners, the method comprises the steps of (a) moving the plurality of burners back and forth along a initial base material, (b) depositing the glass particles produced by the flame hydrolysis reaction of the glass raw material around the initial base material, (c) starting the deposition of a next porous-glass material without removing soot stuck to the inside of the chamber after the deposition of the glass particles is completed. Under the above condition, the inside pressure of the chamber is preferably adjusted within the range of −80 Pa≦Pmin≦−40 Pa, which is a pressure differential between the inside and outside of the chamber. (Hereinafter referred to a pressure differential between the inside and outside of the apparatus)

    Abstract translation: 一种制造光纤用多孔玻璃材料的方法,其特征在于,在具有多个朝向初始基材制造玻璃粒子的燃烧器的反应装置和与上述多个燃烧器相对的位置设置有通气机构的反应装置中, (a)沿着初始基材来回移动多个燃烧器,(b)将通过玻璃原料的火焰水解反应产生的玻璃颗粒沉积在初始基材周围,(c)开始沉积 完成在玻璃颗粒沉积之后没有去除粘附到室内部的烟灰的下一个多孔玻璃材料。 在上述条件下,室的内部压力优选在-80Pa·分钟内的压力差的范围内调节 房间。 (以下称为装置内外的压力差)

    Silicon dioxide film and process for preparation of the same
    36.
    发明申请
    Silicon dioxide film and process for preparation of the same 审中-公开
    二氧化硅薄膜及其制备方法

    公开(公告)号:US20060194453A1

    公开(公告)日:2006-08-31

    申请号:US10550859

    申请日:2004-03-25

    CPC classification number: C03C11/00 C03C3/06 C03C2201/80

    Abstract: A transparent amorphous silicon dioxide film containing many fine voids, characterized in that the refractive index (for light at λ=500 nm) is in the range of 1.01 to 1.40 and that 80 vol. % or more of the fine voids have a diameter of 5 nm or less, has a low refractive index and excellent physical strength such as high scratch resistance, so that it is advantageously employable as an optical film of an optical device for various uses.

    Abstract translation: 含有许多细小空隙的透明无定形二氧化硅膜,其特征在于折射率(对于λ= 500nm的光)在1.01〜1.40的范围内,80体积% 小于等于或小于5nm的直径为5nm以下,具有折射率低,耐刮擦性优异的物理强度,有利地可用作各种用途的光学装置的光学膜。

    Quartz glass crucible and process for the production thereof
    37.
    发明授权
    Quartz glass crucible and process for the production thereof 有权
    石英玻璃坩埚及其制造方法

    公开(公告)号:US06672107B2

    公开(公告)日:2004-01-06

    申请号:US09913632

    申请日:2001-08-16

    Abstract: In order to provide a quartz glass crucible distinguished by high purity, high opacity and/or low transmissibility in the IR spectrum, it is proposed on the basis of a known quartz glass crucible of opaque quartz glass with a crucible body symmetrical in relation to a rotational axis, an outer zone (3) of opaque quartz glass transitioning radially toward the inside into an inner zone (2) of transparent quartz glass and with a density of at least 2.15 g/cm3, that according to the invention, the crucible body (1) be made of a synthetic SiO2 granulate with a specific BET surface ranging from 0.5 m2/g to 40 m2/g, a tamped volume of at least 0.8 g/cm3 and produced from at least partially porous agglomerates of SiO2 primary particles. A process for producing a quartz glass crucible of this kind is distinguished according to the invention in that for the production of the crucible a SiO2 granulate is used which was formed from at least partially porous agglomerates of synthetically manufactured SiO2 primary particles and that it has a specific BET surface ranging from 0.5 m2/g to 40 m2/g and a tamped volume of at least 0.8 g/cm3, the heating effected in such a way that a vitrification front advances from the inside outward while an inner zone (4) of transparent quartz glass is being formed.

    Abstract translation: 为了提供在IR光谱中具有高纯度,高不透明性和/或低透射率的石英玻璃坩埚,提出了在已知的不透明石英玻璃的石英玻璃坩埚的基础上,坩埚体相对于 旋转轴线,不透明石英玻璃的外部区域(3),径向朝向内部转变成透明石英玻璃的内部区域(2),密度为至少2.15g / cm 3,根据本发明, 坩埚体(1)由合成SiO 2颗粒制成,比表面积为0.5m 2 / g至40m 2 / g,捣实体积至少为0.8g / cm 3, 由SiO 2一次颗粒的至少部分多孔的附聚物制成。 根据本发明,制造这种石英玻璃坩埚的方法的不同之处在于,对于坩埚的制造,使用由至少部分多孔的合成SiO 2原生颗粒的聚集体形成的SiO 2颗粒,并且其具有 比表面积为0.5m 2 / g至40m 2 / g,捣实体积为至少0.8g / cm 3,加热使玻璃化前沿从内部进入 外部形成透明石英玻璃的内部区域(4)。

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