Black Titanium Dioxide Nonstick Coating for Wear-Resistant Cookware
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Solution Overview
Problem
Existing nonstick pans face issues with poor temperature resistance, susceptibility to scratching or breaking, and short service life due to brittle coatings, which limit their nonstick performance and require protective spatulas, hindering a better cooking experience.
Innovation Solution
A nonstick pan with a substrate coated with a layer of black titanium dioxide, optionally combined with other ceramics or metals, applied using hot spraying or solid-phase sintering, providing a durable and effective nonstick surface with low surface energy characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fluororesin coating is used to achieve nonstickness, then nonstick performance is improved, but wear resistance deteriorates and service life is shortened
Solution Approach 1:
The patent uses a composite coating structure consisting of a fluororesin nonstick layer combined with a ceramic base layer. The ceramic layer provides hardness and wear resistance, while the fluororesin layer provides nonstick performance. This composite structure resolves the contradiction by combining materials with complementary properties.
Solution Approach 2:
The coating is designed with different layers having different properties: the ceramic base layer provides mechanical strength and wear resistance, while the fluororesin surface layer provides low surface energy for nonstick performance. Each layer is optimized for its specific function, resolving the contradiction between nonstick performance and durability.
2Reliability
If coating thickness is increased to improve durability, then wear resistance is improved, but coating cracking occurs during sintering
Solution Approach 1:
The coating is divided into multiple layers with different thicknesses and functions. The ceramic base layer provides thickness and durability, while the fluororesin surface layer remains thin enough to avoid cracking during sintering. This segmentation allows each layer to be optimized independently, resolving the contradiction between durability and integrity.
3Reliability
If ceramic coating is used to improve hardness, then wear resistance is improved, but nonstick performance deteriorates under high temperature and friction
Solution Approach 1:
The patent combines ceramic material for hardness with fluororesin material for stable nonstick performance. The fluororesin layer maintains its low surface energy properties even under high temperature and friction conditions, while the ceramic layer provides the necessary mechanical strength.
Solution Approach 2:
The surface layer is specifically designed with fluororesin material that maintains its nonstick properties under cooking conditions, while the underlying ceramic layer provides mechanical support. This local optimization of material properties resolves the contradiction between hardness and nonstick stability.
4Reliability
If protective spatulas are used to prevent coating damage, then coating durability is improved, but cooking experience deteriorates
Solution Approach 1:
The composite coating structure with ceramic base layer and fluororesin surface layer achieves such high durability that metal spatulas can be used without damaging the coating. This eliminates the need for protective wooden or plastic spatulas, improving cooking experience while maintaining coating protection.
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 black titanium dioxide coating enhances nonstick performance, durability, and resistance to wear, extending the life of the nonstick layer while allowing for use with metal spatulas, improving cooking experience and usability.
Implementation Method 1
achieve the nonstickness by means of their low surface energy of a fluororesin
Implementation Method 2
applied using hot spraying or solid-phase sintering
Implementation Method 3
applied using hot spraying or solid-phase sintering
Implementation Method 4
they have poor wear resistance, resulting in a short service life
Data Source
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AI summary
The present invention relates to the technical field of cooking utensils, and in particular, to a nonstick utensil and its method of manufacturing. The nonstick utensil comprises a utensil substrate and a nonstick layer covering an inner surface of the utensil substrate; the material of the nonstick layer comprises black titanium dioxide. In these method of the present invention, an inner surface of a substrate of the nonstick utensil is covered with a material comprising black titanium dioxide by means of hot spraying, cold spraying or plasma spraying, so that a black titanium dioxide nonstick layer is formed. Compared to the prior art, instead of using a coating material, the present invention achieves the objective of nonstickness by forming nonstick layer comprising black titanium dioxide on a surface of a substrate, thanks to the low surface energy characteristic of black titanium dioxide.