Silicone coating as a sealing layer for a decoration coating
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Solution Overview
Problem
Existing decorative coatings for cooking surfaces, particularly those made of glass or glass-ceramic, face challenges in achieving adequate impermeability to adhesives and contact media, temperature resistance, adhesion, and color stability, especially for light and dark color points, which are difficult to reproduce with sufficient sealing and durability.
Innovation Solution
A decorative coating system comprising a cured sol-gel decorative layer with inorganic solid particles and a cured silicone-based sealing layer, where the sealing layer contains pigment particles and solid lubricants, providing enhanced impermeability, adhesion, and scratch resistance, allowing the coating to withstand the weight of a cooktop and resist discoloration from overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sol-gel sealing layer is used to achieve impermeability, then sealing performance is improved, but adhesion and scratch resistance deteriorate
Solution Approach 1:
The patent employs a composite sealing layer comprising both sol-gel components and silicone resin. The sol-gel matrix provides impermeability through its dense, cross-linked structure, while the silicone resin component enhances adhesion to the substrate and improves scratch resistance. This composite approach allows the sealing layer to simultaneously achieve chemical sealing performance and mechanical durability that neither material could provide alone.
2Temperature
If specific pigments are used in defined proportions to meet temperature and adhesion requirements, then temperature resistance is improved, but color variety deteriorates
Solution Approach 1:
The patent utilizes the temperature-dependent properties of silicone resin to achieve both color stability and variety. By adjusting the composition ratios of different silicone components and pigments, the coating can maintain color stability at cooking temperatures while allowing for diverse color options. The silicone resin matrix provides thermal stability that prevents pigment degradation, enabling the use of a broader range of pigments including light colors that would otherwise discolor.
3Object-affected harmful factors
If organic components are added to the sealing layer for liquid-repellent properties, then hydrophobicity is improved, but temperature resistance deteriorates
Solution Approach 1:
The patent applies different functional components to different aspects of the sealing layer. The sol-gel matrix provides the base structure with temperature resistance, while silicone resin is added specifically to confer hydrophobic properties. The silicone resin forms a surface layer that repels liquids and adhesives, while the underlying sol-gel structure maintains thermal stability. This layered functional distribution allows the coating to exhibit both hydrophobicity and temperature resistance simultaneously.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The coating system ensures strong adhesion to the cooktop, maintains impermeability to various media, and achieves stable color coordinates, including dark and light points, with improved temperature resistance and scratch resistance, effectively addressing the limitations of previous technologies.
Implementation Method 1
a decorative layer applied at least partially to the glass or glass-ceramic substrate and a sealing layer applied at least to partial areas of the decorative layer and/or the glass or glass-ceramic substrate, wherein the decorative layer comprises a cured sol-gel coating with inorganic solid particles
Implementation Method 2
the sealing layer comprises a cured silicone-based coating with inorganic solid particles
Data Source
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AI summary
The invention relates to a glass or glass ceramic article having a decorative coating, wherein the decorative coating comprises a decoration and sealing coating, wherein the decorative coating comprises a decoration layer and a sealing layer. The decoration layer is applied to at least some of the surface area of the glass or glass ceramic substrate, and the sealing layer is applied to at least a portion of the decoration layer. The decoration layer is a cured sol-gel coating comprising inorganic solid particles, and the sealing layer is a cured silicone coating comprising inorganic solid particles. The invention further relates to a method for producing such glass or glass ceramic articles.