Title:
TRANSPARENT MICROCRYSTALLINE GLASS, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/011571
Kind Code:
A1
Abstract:
A preparation method for transparent microcrystalline glass, and transparent microcrystalline glass and a use thereof. The preparation method comprises: (1) nucleating a glass raw sheet, (2) crystallizing the nucleated glass raw sheet, and (3) performing heat treatment on the crystallized glass sheet to obtain microcrystalline glass having an XRD diffraction peak height H that is greater than or equal to 870, wherein the content of lithium disilicate and petalite in the microcrystalline glass is 90-100%; the heat treatment is divided into a heating stage, a high-temperature stage, and a cooling stage; the heating stage is divided into n heating stages, the high-temperature stage is divided into k high-temperature stages, the cooling stage is divided into m cooling stages, k is an integer obtained by rounding (n+k+m)/3, and 6≤n+k+m≤30; the maximum value of the constant temperature TKi of the high-temperature stages is TKmax, and TKmax=Tg+ΔT2; and in the k high-temperature stages, a temperature difference between any two adjacent heat treatment stages is within the range of 5-50°C.
Inventors:
DENG SHUANG (CN)
HUANG HAO (CN)
WANG YUBO (CN)
TAN BAOQUAN (CN)
HU WEI (CN)
HUANG HAO (CN)
WANG YUBO (CN)
TAN BAOQUAN (CN)
HU WEI (CN)
Application Number:
PCT/CN2022/110155
Publication Date:
February 09, 2023
Filing Date:
August 04, 2022
Export Citation:
Assignee:
CHONGQING AUREAVIA HI TECH GLASS CO LTD (CN)
International Classes:
C03C10/12; C03B32/02
Foreign References:
| CN112321162A | 2021-02-05 | |||
| CN111253087A | 2020-06-09 | |||
| CN110734226A | 2020-01-31 | |||
| JPH0935234A | 1997-02-07 |
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (CN)
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