Coating composition and coated article
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Solution Overview
Problem
Existing coating compositions for cooking utensils and kitchen supplies lack excellent coating hardness and corrosion resistance, which are essential for durability and longevity.
Innovation Solution
A coating composition comprising an aromatic polyether ketone resin and heat-resistant resins such as polyamide-imide and polyimide, applied in a specific mass ratio, with or without fluorine-containing polymers, to form a primer and fluorine-containing layers, providing enhanced adhesiveness and corrosion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fluororesin layer is formed on a primer layer to provide non-adhesiveness and heat resistance, then the coating achieves excellent non-stick properties, but the coating hardness and corrosion resistance are insufficient
Solution Approach 1:
The patent employs a composite coating system consisting of a primer layer containing aromatic polyether ketone resin and heat-resistant resins (polyamide-imide, polyimide) combined with a fluororesin outer layer. This composite structure integrates the advantages of each material: the aromatic polyether ketone provides exceptional coating hardness and corrosion resistance, while the fluororesin layer contributes non-adhesiveness and heat resistance. The specific mass ratio of aromatic polyether ketone resin to heat-resistant resins (1/99 to 50/50) optimizes the balance between hardness and adhesion, resolving the technical contradiction between coating strength and reliability.
2Reliability
If existing coating compositions are used to provide non-stick properties, then fluororesin content can be maintained, but coating hardness and corrosion resistance remain poor
Solution Approach 1:
The patent fundamentally changes the chemical composition parameters of the primer layer by introducing aromatic polyether ketone resin, which has superior mechanical properties compared to conventional resins. The specific parameter range of aromatic polyether ketone resin content (1/99 to 50/50 mass ratio with heat-resistant resins) is optimized to achieve both high coating hardness and good adhesion. This parameter change enables the coating to simultaneously achieve excellent non-stick properties and enhanced strength, overcoming the limitations of existing coating compositions.
3Strength
If a primer layer with aromatic polyether ketone resin is used to improve coating hardness, then corrosion resistance is enhanced, but the complexity of the coating system increases
Solution Approach 1:
The patent divides the coating system into functionally distinct segments: a primer layer containing aromatic polyether ketone resin and heat-resistant resins for providing hardness and corrosion resistance, and a separate fluororesin outer layer for non-stick properties. This segmentation allows each layer to be optimized for its specific function while maintaining overall system performance. The clear functional division reduces the complexity of achieving multiple properties simultaneously in a single-layer system.
Data Source
AI summary
Provided is a coating composition that provides a coating film having excellent coating hardness and corrosion resistance. Provided is a coating composition for cooking utensils or kitchen supplies, containing: an aromatic polyether ketone resin; and at least one heat-resistant resin selected from the group consisting of a polyamide-based resin and a polyimide-based resin. The aromatic polyether ketone resin and the heat-resistant resin give a mass ratio (aromatic polyether ketone resin/heat-resistant resin) of 1/99 to 50/50. The coating composition is intended for direct application to a substrate containing a metal or a non-metal inorganic material.