Glass ceramic with excellent acid and alkali resistance as well as preparation method and application of glass ceramic
CN119731132APending Publication Date: 2025-03-28CHONGQING AUREAVIA HI TECH GLASS CO LTD +1
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Patent Information
- Application Number
- CN202380053859.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-07-22
- Filing Date
- 2023-07-10
- Publication Date
- 2025-03-28
AI Technical Summary
Technical Problem
Existing glass-ceramics have insufficient durability in acid and alkali environments, and chemical strengthening treatments increase costs and affect strength and drop resistance.
Method used
By strictly controlling the proportion and content of oxide components in the lithium aluminum silicon system, especially the content range of SiO2, Al2O3, Li2O, ZrO2, etc., the crystal phase and grain size of the glass are optimized to form a glass with excellent acid and alkali resistance and transparency. Sexy glass-ceramic.
Benefits of technology
It is achieved that the durability and light transmittance of crystallized glass can be significantly improved in acid and alkali environments, while maintaining or improving its strength and drop resistance.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses microcrystalline glass with excellent acid and alkali resistance as well as a preparation method and application thereof. A glass ceramic comprising the following components in mole percentages relative to the total mole number of the components of the glass: 67.0% < = SiO2 < = 71.0%; al2O3 is greater than or equal to 3.5% and less than or equal to 4.5%; 0.7% < = P2O5 < = 1.5%; zrO2 is greater than or equal to 1.5% and less than or equal to 4.0%; 0% < Na2O < = 1.0%; 0% < K2O < = 0.5%; 20.0% < = Li2O < = 23.0%; 0% < CaO < = 1.8%; 0% < B2O3 < = 0.7%; 0% < = MgO < = 1.0%; and 0% < = BaO < = 0.8%. After standing in a hydrochloric acid solution, a hydrofluoric acid solution and / or a sodium hydroxide solution, the microcrystalline glass is very low in weight loss ratio per unit area, excellent in acid and alkali resistance and excellent in strength after strengthening, and the tensile stress linear density CTLD reaches 45000-64000 MPa / mm.
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