发明申请
- 专利标题: SiO slurry for the production of quartz glass as well as the application of the slurry
- 专利标题(中): 用于生产石英玻璃的SiO浆料以及浆料的应用
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申请号: US12311446申请日: 2007-09-12
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公开(公告)号: US20090266110A1公开(公告)日: 2009-10-29
- 发明人: Waltraud Werdecker , Norbert Traeger , Juergen Weber
- 申请人: Waltraud Werdecker , Norbert Traeger , Juergen Weber
- 申请人地址: DE Hanau
- 专利权人: Heraeus Quarzglas GmbH & Co. KG
- 当前专利权人: Heraeus Quarzglas GmbH & Co. KG
- 当前专利权人地址: DE Hanau
- 优先权: DE102006046619.5 20060929
- 国际申请: PCT/EP2007/059565 WO 20070912
- 主分类号: C03B20/00
- IPC分类号: C03B20/00 ; C03C17/02 ; C03C3/076 ; C03C3/11 ; C03C3/06
摘要:
A known 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, wherein the largest volume fraction is composed of SiO2 particles with particle sizes in the range 1 μm-60 μm, as well as SiO2 nanoparticles with particle sizes less than 100 nm in the range 0.2-15% volume by weight (of the entire solids content). In order to prepare such a slurry for use, and to optimize the flow behavior of such a slurry with regard to later processing by dressing or pouring the slurry mass, and with regard to later drying and sintering without cracks, the invention suggests a slurry with SiO2 particles with a multimodal distribution of particle sizes, with a first maximum of the sizes distribution in the range 1 μm-3 μm and a second maximum in the range 5 μm-50 μm, and a solids content (percentage by weight of the SiO2 particles and the SiO2 nanoparticles together) in the range 83%-90%.