Composite material for cooker, preparation method for composite material, and cooker
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Solution Overview
Problem
Existing cookware coatings, particularly those based on organic resins, suffer from poor wear resistance, corrosion resistance, and cleanability, and can release toxic gases at high temperatures, posing health risks.
Innovation Solution
A composite material for cookware with a multi-layer structure comprising hard granular material clad in silicon-containing cladding material, which is further clad in metallic cladding material, using silane, siloxane, and siloxane polymers to form a protective layer that maintains wear resistance and cleanability without toxic gas release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If organic resin-based coating is applied on cookware surface, then cleanability and corrosion resistance are achieved, but wear resistance and high temperature stability deteriorate
Solution Approach 1:
The patent applies a composite coating system consisting of organic resin-based coating combined with inorganic coating layers (silicon-containing glass enamel or ceramic coating). This composite structure integrates the cleanability advantages of organic resins with the wear resistance and thermal stability of inorganic materials, resolving the contradiction between ease of operation and strength.
Solution Approach 2:
The coating is divided into multiple functional layers: an organic resin-based coating layer providing cleanability and corrosion resistance, and an inorganic coating layer (silicon-containing glass enamel or ceramic) providing wear resistance and high temperature stability. Each layer performs its specific function, allowing the system to achieve both cleanability and wear resistance simultaneously.
2Ease of operation
If fluorine resin coating is applied on cookware surface, then cleanability is improved, but high temperature stability deteriorates due to toxic gas decomposition
Solution Approach 1:
The patent changes the chemical composition parameters of the coating by introducing silicon-containing glass enamel or ceramic coating with specific compositional ranges (SiO2: 60-80 wt%, Al2O3: 5-20 wt%, etc.). This compositional change raises the decomposition temperature and eliminates toxic gas release while maintaining cleanability through the glassy surface structure.
Solution Approach 2:
The organic resin-based coating layer acts as a sacrificial layer that protects the underlying inorganic coating. The organic layer decomposes first at lower temperatures, preventing direct exposure and decomposition of the inorganic coating, thus avoiding toxic gas release while maintaining the cleanability function.
3Strength
If multi-layer coating structure is applied, then wear resistance and cleanability are improved, but device complexity increases
Solution Approach 1:
The patent applies different coating materials with specific local qualities to different functional requirements: organic resin-based coating for cleanability and corrosion resistance, silicon-containing glass enamel for wear resistance and thermal stability, or ceramic coating for high temperature applications. Each material is selected for its specific local properties, achieving functional optimization without excessive complexity.
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 composite material provides durable wear resistance, corrosion resistance, and cleanability, ensuring safety and non-toxicity, with a Vickers hardness of 750-1000HV and hydrophobicity maintaining cleanability even after 10,000 scouring pad treatments.
Implementation Method 1
The silicon-containing cladding material includes mainly silane, siloxane, silane polymer, and siloxane polymer, which will not produce toxic or dangerous gases after thermal decomposition, while decomposition product has hard structure with low surface energy
Implementation Method 2
when the protective layer is prepared with thermal processes such as thermal spraying or thermal cladding, the metallic cladding material is heated to melt and bonded to the surface of the cookware tightly
Implementation Method 3
The composite material provides durable wear resistance, corrosion resistance, and cleanability, ensuring safety and non-toxicity, with a Vickers hardness of 750-1000HV and hydrophobicity maintaining cleanability even after 10,000 scouring pad treatments
Data Source
Figure 1~3
AI summary
The present disclosure discloses a composite material applied to cookware, a method for preparing the same, and a cookware thereof. The composite material includes hard granular material, silicon-containing cladding material and metallic cladding material; wherein the hard granular material is clad in the silicon-containing cladding material; the silicon-containing cladding material is clad in the metallic cladding material, and the silicon-containing cladding material includes main compositions one or more selected from the group consisting of silane, siloxane, silane polymer, and siloxane polymer. There is no toxic gas prepared after the composite material is decomposed at a high temperature. The cookware with a protective layer applied with the composite material has high wear resistance, corrosion resistance, and durable cleanability, as well as safety and non-toxicity.