Microcrystalline Glass Composition for Low Haze and High Strength
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Solution Overview
Problem
Current microcrystalline glass products exhibit high haze, making them unsuitable for electronic devices with high optical performance requirements.
Innovation Solution
A microcrystalline glass composition comprising specific weight percentages of SiO2, Al2O3, Li2O, Na2O, P2O5, and ZrO2, with a (SiO2+Li2O)/(ZrO2+P2O5) ratio of 4.0-15.5, and optionally including ZnO, MgO, B2O3, K2O, Ln2O3, and clarifying agents, achieving a haze below 0.2% and excellent mechanical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional microcrystalline glass composition is used, then mechanical strength is achieved, but haze becomes high
Solution Approach 1:
The patent applies parameter changes by precisely controlling the chemical composition parameters of the glass, specifically setting SiO2 at 60-80%, Al2O3 at 3-15%, Li2O at 5-10%, Na2O at 4-8%, P2O5 at 0.5-5%, and ZrO2 at 5-15%, with the ratio (SiO2+Li2O)/(ZrO2+P2O5) controlled at 4.0-15.5. This compositional parameter optimization enables the glass to achieve both low haze (below 0.2%) and excellent mechanical properties simultaneously
Solution Approach 2:
The patent employs composite materials by creating a multi-component glass system that combines SiO2, Al2O3, Li2O, Na2O, P2O5, and ZrO2 in specific proportions. This composite composition allows the material to exhibit both low haze characteristics and high mechanical strength, resolving the contradiction between optical performance and mechanical durability
2Object-generated harmful factors
If glass composition is optimized for low haze, then optical performance improves, but mechanical performance may deteriorate
Solution Approach 1:
The patent demonstrates that by changing the compositional parameters within specific ranges, particularly maintaining SiO2 at 60-80% and Al2O3 at 3-15%, the glass achieves low haze while preserving mechanical strength. The controlled ratio of (SiO2+Li2O)/(ZrO2+P2O5) at 4.0-15.5 ensures both optical and mechanical properties are optimized simultaneously
Solution Approach 2:
The multi-component composite glass system combines materials with complementary properties: SiO2 provides structural framework, Al2O3 enhances mechanical strength, Li2O and Na2O control melting characteristics, P2O5 and ZrO2 modify optical properties. This composite approach enables simultaneous achievement of low haze and high mechanical performance
Data Source
AI summary
A microcrystalline glass and microcrystalline glass product with excellent mechanic performance and lower haze. The microcrystalline glass product, wherein components thereof are represented by weight percentage, includes: 60-80% of SiO2; 3-15% of Al2O3; greater than or equal to 5% but less than 10% of Li2O; 4-8% of Na2O; 0.5-5% of P2O5; greater than 5% but less than or equal to 15% of ZrO2, wherein (SiO2+Li2O)/(ZrO2+P2O5) is 4.0-15.5. Through rational component design, the microcrystalline glass or microcrystalline glass product obtained by the present invention has excellent mechanic performance and lower haze, so as to be applicable for display devices or electronic devices with higher optical performance requirements.