Opaque quartz glass and a method for producing the same

    公开(公告)号:US11993538B2

    公开(公告)日:2024-05-28

    申请号:US18262842

    申请日:2021-01-30

    IPC分类号: C03C3/06 C03B19/06 C03C4/02

    摘要: A quartz glass provides an opaque quartz glass having high light-shielding property, excellent mechanical strength and excellent cleaning resistance against hydrofluoric acid. By setting the maximum width of the amorphous bubbles existing in the opaque quartz glass to an average of 3 to 15 μm and the density to 2.15 g/cm3 or more, the mechanical strength after baking and the cleaning resistance by hydrofluoric acid are improved. The opaque quartz glass has a whiteness at a thickness of 10 mm of 75 to 90%, the reflectance of light with a wavelength of 0.24 to 2.6 μm at a thickness of 4 mm is 60 to 85%, and the bending strength after baking is 95 MPa. In addition, a foaming agent may be mixed in the opaque quartz glass. An opaque quartz glass having cleaning resistance against acid can be obtained.

    Black Quartz Glass and Method for Manufacturing Same

    公开(公告)号:US20240002273A1

    公开(公告)日:2024-01-04

    申请号:US18247443

    申请日:2021-09-16

    摘要: The present invention relates to a black quartz glass comprising Si of 0.5 to 10 mass %, SiO of 0.1 to 5 mass % and SiO2 of the residue, wherein the SCE reflectance at a wavelength of 350 nm to 750 nm is 10% or less; a method for producing the black quartz glass, comprising: pressure-molding a powder obtained by mixing and consolidating (1) fumed silica, or (2) a mixture powder of fumed silica and a synthetic silica powder, or (3) a mixture powder of fumed silica, spherical silica and a synthetic silica powder, with a Si powder of 0.5 to 10 mass % and a SiO powder of 0.1 to 5 mass %, and heating and sintering the pressure-molded product in the atmosphere; and a product comprising a black quartz glass member made of the black quartz glass. The present invention allows to provide a black quartz glass which has an excellent light-shielding property, has no risk of causing contamination in a step of using it, has sufficient color uniformity when the size is enlarged, and is capable of producing a large ingot, and to provide a method for producing the black quartz glass with excellent productivity even in the large ingot, and to provide a black quartz glass product made of the black quartz glass.

    COATING OF BAIT SUBSTRATES FOR OPTICAL FIBER MAKING
    6.
    发明申请
    COATING OF BAIT SUBSTRATES FOR OPTICAL FIBER MAKING 审中-公开
    用于光纤制造的基片的涂层

    公开(公告)号:US20160257612A1

    公开(公告)日:2016-09-08

    申请号:US15049359

    申请日:2016-02-22

    IPC分类号: C03C25/10

    摘要: A method for forming a porous soot body that includes depositing soot on a release coating supported by a bait substrate. Characteristics of the release coating control the strength of attachment of the porous soot body to the bait substrate. Weak attachment of the porous soot body to the bait substrate facilitates separation of the porous soot body from the bait substrate without damaging the porous soot body. The release coating may be formed from a brittle material or a material that oxidizes or otherwise depletes during deposition of the soot that forms the porous soot body. The release coating may include carbon. The separated porous soot body may be consolidated to form a core cane or may function as a sleeve (porous cladding) in a cane-in-soot fiber preform manufacturing process.

    摘要翻译: 一种形成多孔烟灰体的方法,其包括在由诱饵基底支撑的剥离涂层上沉积烟灰。 释放涂层的特征控制多孔烟炱体与诱饵基底的连接强度。 多孔烟炱体与诱饵底物的弱附着有利于将多孔烟炱体与诱饵基质分离,而不损害多孔烟炱体。 剥离涂层可以由脆性材料或在形成多孔烟灰体的烟灰沉积期间氧化或以其他方式消耗的材料形成。 脱模涂层可以包括碳。 分离的多孔烟灰体可以被固结以形成芯棒,或者可以在烟囱纤维预制棒制造工艺中用作套筒(多孔包层)。

    HEAT TREATMENT METHOD FOR SYNTHETIC QUARTZ GLASS
    8.
    发明申请
    HEAT TREATMENT METHOD FOR SYNTHETIC QUARTZ GLASS 有权
    合成石英玻璃的热处理方法

    公开(公告)号:US20140053608A1

    公开(公告)日:2014-02-27

    申请号:US13945631

    申请日:2013-07-18

    申请人: Shigeo Harada

    发明人: Shigeo Harada

    IPC分类号: C03B32/00 C03B25/00

    摘要: [Problem] The provision of a synthetic quartz glass heat treatment method that can, by a single heat treatment, and without particular limitations on the OH group concentration distribution of the starting material, regulate the birefringence fast axis direction in the synthetic quartz glass after it has been heat-treated.[Means of Overcoming the Problem] A heat treatment method for synthetic quartz glass whereby columnar synthetic quartz glass having two opposing end faces and a lateral face is heat-treated covered with thermal insulator; wherein said heat treatment is performed using as end face thermal insulator which covers said two end faces, and as lateral face thermal insulator which covers said lateral face, thermal insulators that differ in at least either type or thickness to afford different thermal insulation effects such that the birefringence fast axis direction of said synthetic quartz glass is regulated.

    摘要翻译: [问题]提供合成石英玻璃热处理方法,其可以通过单一热处理,对原料的OH基浓度分布没有特别限制,调节合成石英玻璃后的双折射快轴方向 已被热处理。 解决问题的方法由具有两个相对的端面和侧面的柱状合成石英玻璃用绝热体进行热处理的合成石英玻璃的热处理方法; 其中所述热处理使用作为覆盖所述两个端面的端面绝热体,以及作为覆盖所述侧面的侧面热绝缘体,至少两种类型或厚度不同的热绝缘体,以提供不同的隔热效果,使得 所述合成石英玻璃的双折射快轴方向被调节。

    SiO2 slurry for the production of quartz glass as well as the application of the slurry
    9.
    发明授权
    SiO2 slurry for the production of quartz glass as well as the application of the slurry 有权
    用于生产石英玻璃的SiO2浆料以及浆料的应用

    公开(公告)号:US08209998B2

    公开(公告)日:2012-07-03

    申请号:US13340632

    申请日:2011-12-29

    IPC分类号: C03B20/00

    摘要: SiO2 slurry for the production of quartz glass contains a dispersion liquid and amorphous SiO2 particles with particle sizes to a maximum of 500 μm. The largest volume fraction is SiO2 particles with particle sizes of 1 μm-60 μm, as well as SiO2 nanoparticles with particle sizes less than 100 nm constituting 0.2-15% volume by weight of the entire solids content. To prepare the slurry for use and optimize its flow behavior for later processing by dressing or pouring the slurry mass, and for later drying and sintering without cracks, the slurry has SiO2 particles with a multimodal distribution of particle sizes, with a first maximum in the range 1 μm-3 μm and a second maximum in the range 5 μm-50 μm, and an 83%-90% solids content by weight of the SiO2 particles and the SiO2 nanoparticles together.

    摘要翻译: 用于生产石英玻璃的SiO2浆料含有粒径达500μm的分散液和无定形SiO 2颗粒。 最大的体积分数是粒径为1μm-60μm的SiO 2颗粒,以及粒径小于100nm的SiO 2纳米颗粒,占整个固体含量的0.2-15重量%。 为了制备使用的浆料并优化其流动行为以便随后通过修整或倾倒浆料进行加工,并且为了稍后的干燥和烧结而没有裂缝,该浆料具有多晶粒度分布的SiO 2颗粒,其中第一最大值在 范围为1μm-3μm,第二最大值为5μm-50μm,并且SiO 2颗粒和SiO 2纳米颗粒的固体含量为83%-90%。