Anodized Ceramic Coating Structure for Non-Stick Heat-Cookers
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Solution Overview
Problem
Aluminum heat-cookers face issues with surface erosion and carcinogen release due to Teflon coatings, which lead to reduced durability and health concerns, and existing solutions fail to provide non-toxic, abrasion-resistant, and high heat conductivity coatings.
Innovation Solution
A coating layer structure formed by anodic oxidation of aluminum oxide on the heat-cooker surface, followed by application of an anion- and far infrared ray-emitting, inorganic ceramic coating agents or non-stick ceramic agents, comprising specific components like silane, silicon oxide, functional fillers, and ceramic powders, ensuring strong bonding and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If Teflon coating is applied to aluminum heat-cooker surface, then non-stick property and washability are improved, but surface erosion and carcinogen release occur reducing durability and safety
Solution Approach 1:
The patent applies a composite coating structure consisting of multiple layers: a base aluminum oxide layer formed by anodization, followed by a Teflon coating layer, and optionally a protective clear coat. This multi-layer composite structure combines the non-stick properties of Teflon with the corrosion resistance and durability of aluminum oxide, preventing direct contact between food and the aluminum substrate while avoiding the erosion problems of single-layer coatings.
Solution Approach 2:
The patent performs preliminary anodization of the aluminum surface to form a dense aluminum oxide layer before applying the Teflon coating. This preliminary action creates a stable, erosion-resistant base layer that prevents pinhole formation and substrate exposure, thereby preventing the surface erosion and carcinogen release issues associated with direct Teflon coating on aluminum.
2Ease of operation
If Teflon coating is applied to aluminum heat-cooker surface, then non-stick property is improved, but surface strength decreases leading to abrasions and scratches
Solution Approach 1:
The patent creates a composite structure where the hard aluminum oxide layer formed by anodization serves as a protective underlying layer with high surface strength, while the Teflon coating provides the non-stick property. This composite approach allows the weak Teflon layer to be supported by the strong aluminum oxide base, preventing abrasions and scratches that would occur with standalone Teflon coating.
Solution Approach 2:
The patent applies a protective aluminum oxide layer beforehand to cushion and support the Teflon coating layer. This preliminary protective layer absorbs mechanical stresses and prevents direct exposure of the Teflon to abrasive forces from utensils, thereby maintaining surface strength and preventing scratches during normal use.
3Reliability
If aluminum oxide film layer is formed by anodic oxidation, then adhesive strength and corrosion resistance are improved, but additional processing steps are required
Solution Approach 1:
The patent utilizes the self-service property of anodic oxidation, where the aluminum substrate itself serves as the source of the protective aluminum oxide layer. The anodization process automatically forms the oxide layer on the aluminum surface through electrochemical reaction, eliminating the need for separate primer or adhesion-promoting layers, and reducing the overall complexity of the coating system.
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 extends the shelf-life of the heat-cooker by preventing abrasions and scratches, ensures non-toxicity, and maintains good heat conductivity for even cooking, while being environmentally friendly and free from carcinogen release.
Implementation Method 1
forming an aluminum oxide film layer on the surface of an aluminum heat-cooker by anodic oxidation
Implementation Method 2
anion- and far infrared ray-emitting, inorganic ceramic coating agent
Implementation Method 3
anion- and far infrared ray-emitting, inorganic ceramic coating agent
Implementation Method 4
a silicon mixture which chemically binds said silane or an oligomer derived therefrom as a binding agent
Data Source
AI summary
The present invention relates to a coating layer structure for heat-cookers, and more particularly, to a coating layer structure for heat-cookers wherein said structure has been produced by forming an aluminum oxide (Al2O3) layer on the surface of an aluminum heat-cooker by anodic oxidation and then applying thereon either an anion- and far infrared ray-emitting, inorganic ceramic coating agent or a non-stick, inorganic ceramic coating agent, said both coating agents being non-toxic to human body, and whereby said structure, on heating, does not release any carcinogens and increases heat conductivity at the same time, and said structure also has excellent anti-corrosive and anti-abrasive properties.