Title:
GLASS-CERAMIC, GLASS-CERAMIC PRECURSOR, AND PREPARATION METHOD FOR GLASS-CERAMIC
Document Type and Number:
WIPO Patent Application WO/2024/088186
Kind Code:
A1
Abstract:
A glass-ceramic, a glass-ceramic precursor, and a preparation method for the glass-ceramic. The glass-ceramic comprises SiO2, Al2O3 and Li2O, the crystalline phases comprise a lithium silicate crystalline phase, a lithium feldspar solid solution and/or petalite crystalline phase, and the glass-ceramic is transparent and colorless; for a glass-ceramic having a thickness of 1 mm, the glass-ceramic has a transmittance of at least 86% within a wavelength range of 450-1000 nm. According to the glass-ceramic, by introducing TiO2, optimizing the material formula composition, and introducing the lithium feldspar solid solution crystalline phase in a crystallization process, the phenomena of warping and sheet glass fragmentation caused by a large expansion coefficient difference between the petalite crystalline phase and the lithium silicate crystalline phase are greatly improved. Moreover, the glass-ceramic has low dielectric loss and high thermal conductivity, and also meets the requirements of 5G communication for glass-ceramics.
Inventors:
WANG ZHIAN (CN)
WU XIAOXI (CN)
ZHANG XUHAI (CN)
LIU ZHONGJUN (CN)
PENG YINPING (CN)
XUE XINJIAN (CN)
WU XIAOXI (CN)
ZHANG XUHAI (CN)
LIU ZHONGJUN (CN)
PENG YINPING (CN)
XUE XINJIAN (CN)
Application Number:
PCT/CN2023/125832
Publication Date:
May 02, 2024
Filing Date:
October 23, 2023
Export Citation:
Assignee:
CAIHONG GROUP SHAOYANG SPECIAL GLASS CO LTD (CN)
CAIHONG GROUP CO LTD (CN)
CAIHONG GROUP CO LTD (CN)
International Classes:
C03C10/04
Foreign References:
| CN113248152A | 2021-08-13 | |||
| CN112592065A | 2021-04-02 | |||
| CN114671618A | 2022-06-28 | |||
| JP2001035417A | 2001-02-09 | |||
| CN115893849A | 2023-04-04 | |||
| CN107434359A | 2017-12-05 | |||
| CN110436788A | 2019-11-12 |
Attorney, Agent or Firm:
CHANGSHA ZHIRONG PATENT AGENCY (ORDINARY PARTNERSHIP) (CN)
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