Cooker top plate
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional cooker top plates face challenges in achieving high scratch resistance and adhesion for their heat-resistant resin layers without compromising each other, as increasing pigment content for scratch resistance can lead to decreased adhesion and potential delamination.
Innovation Solution
A cooker top plate design featuring a glass substrate with a heat-resistant resin layer containing a combination of flaky and needle-like crystalline pigments, where the total pigment content is 85% or more, and a specific mass ratio of flaky to needle-like crystalline pigment between 1.0 and 35.0, enhancing both scratch resistance and adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the content of pigment in the heat-resistant resin layer is increased to increase hardness and scratch resistance, then scratch resistance is improved, but the content of resin component becomes relatively small which results in decreased adhesion and occurrence of delamination or superficial peeling
Solution Approach 1:
The invention uses a composite pigment system combining flaky pigment particles (with aspect ratio 2.0 or more) and needle-like crystalline pigment particles (with aspect ratio 3.0 or more) in specific proportions. This composite approach creates a synergistic effect where the flaky pigment provides base hardness while the needle-like pigment interlocks with the resin matrix to maintain adhesion, achieving both scratch resistance and bonding strength that single-pigment systems cannot attain.
Solution Approach 2:
The invention optimizes specific parameters including the aspect ratio of pigment particles (flaky: ≥2.0, needle-like: ≥3.0), the total pigment content (3-50 mass%), and the mass ratio between flaky and needle-like pigments (1:9 to 9:1). By precisely controlling these parameters, the invention achieves the optimal balance between scratch resistance and adhesion, transforming the quality of the pigment-resin composite to simultaneously satisfy both contradictory requirements.
2Object-affected harmful factors
If the heat-resistant resin layer is made harder to resist scratches during assembly, then scratch resistance is improved, but the layer becomes more prone to delamination from the glass substrate due to reduced resin content
Solution Approach 1:
The invention employs a composite pigment structure combining flaky particles (aspect ratio ≥2.0) and needle-like crystalline particles (aspect ratio ≥3.0). The needle-like particles act as anchoring elements that penetrate and interlock with the resin matrix and glass substrate interface, while flaky particles provide surface hardness. This composite architecture maintains compositional stability and prevents delamination even at high pigment loadings.
Solution Approach 2:
The invention creates different functional zones within the heat-resistant resin layer by using pigments with different aspect ratios. The needle-like crystalline pigment particles concentrate at the interface regions to enhance bonding and prevent delamination, while flaky pigment particles distribute throughout the layer to provide uniform scratch resistance. This spatial differentiation of pigment functions resolves the contradiction between hardness and adhesion stability.
Data Source
AI summary
Provided is a cooker top plate capable of increasing both the scratch resistance and the adhesion of the heat-resistant resin layer. A cooker top plate includes: a glass substrate having a cooking surface on which a cooking utensil is to be put and a back surface opposite to the cooking surface; and a heat-resistant resin layer disposed on the back surface of the glass substrate, wherein the heat-resistant resin layer includes a layer (X) containing a silicone resin and a pigment, the pigment in the layer (X) contains a flaky pigment (A) having a Mohs hardness of 2.5 or more and a needle-like crystalline pigment (B) having a Mohs hardness of 2.5 or more, a total content of the flaky pigment (A) and the needle-like crystalline pigment (B) per 100% by mass of pigment in the layer (X) is 85% by mass or more, and a mass ratio of the content of the flaky pigment (A) to the content of the needle-like crystalline pigment (B) in the layer (X) (content of flaky pigment (A) to content of needle-like crystalline pigment (B)) is not less than 1.0 and not more than 35.0.