Bis-type silane coating composition for high hardness and storage stability
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Solution Overview
Problem
Current high-strength coating materials face challenges with poor storage stability, significant shrinkage during curing, and limited compatibility with functional materials, restricting their industrial application.
Innovation Solution
A coating composition comprising a bis-type silane compound, graphene or conductive polymer, and a mixture solvent of acidic or basic aqueous solution and alcohol, with a high Si-OH ratio, which forms a stable and highly transparent, high-strength coating film with excellent compatibility and dispersion properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If tetraethylorthosilicate (TEOS) based silicon solution composition is used to achieve high surface hardness, then surface hardness similar to glass film is achieved, but storage stability deteriorates and large shrinkage occurs during curing
Solution Approach 1:
The patent changes the chemical structure parameter from TEOS (monosilane) to bis-type silane compound with specific Si-OH ratio, and adjusts the solvent system parameters (acidic/basic aqueous solution mixed with alcohol) to achieve both high hardness and improved storage stability
Solution Approach 2:
The patent creates a composite coating system combining inorganic bis-type silane compounds with organic solvent mixtures (aqueous solution and alcohol), achieving synergistic effects that provide both glass-like hardness and enhanced storage stability
2Strength
If polysilazane structure is used to increase silica content and achieve high hardness, then high hardness of glass film is achieved, but storage stability deteriorates and numerous post-treatment processes are required
Solution Approach 1:
The patent replaces the unstable polysilazane structure with a more stable bis-type silane compound that does not require numerous post-treatment processes, effectively using a 'shorter-lived' but more stable chemical structure that achieves the desired hardness without the stability penalties
Solution Approach 2:
The patent changes the chemical composition from polysilazane to bis-type silane with specific Si-OH ratio (at least 50% of total silane residue), fundamentally altering the chemical parameters to achieve both high hardness and storage stability simultaneously
3Strength
If high silica content is achieved through polysilazane to obtain high hardness, then hardness similar to glass film is achieved, but compatibility with functional materials deteriorates
Solution Approach 1:
The patent adjusts the chemical parameters by using bis-type silane compounds with specific Si-OH ratios and organic-inorganic hybrid solvent systems, creating a coating composition that maintains high hardness while improving compatibility with various functional materials through optimized chemical composition
Solution Approach 2:
The patent develops a composite coating system that integrates inorganic silane compounds with organic solvent mixtures, creating a hybrid material system that exhibits both high hardness and enhanced compatibility with functional materials
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 solution achieves high storage stability, rapid curing, and excellent compatibility with functional materials, resulting in a coating film with high transmittance, strength, and stability, suitable for various industrial applications such as heat-resistant and flexible substrate materials.
Implementation Method 1
the hydrolysis products and partial condensates of an epoxy functional silane, a disilane such as bis-silane is bis(triethoxysilyl)ethane
Implementation Method 2
the hydrolysis products and partial condensates of an epoxy functional silane
Data Source
Figure 1~2
AI summary
The present invention relates to a coating composition comprising a bis-type silane compound, and particularly relates to a coating composition which has high storage stability and can form a highly transparent and high-strength coating film, a preparation method thereof and a coating film formed using the same.