Coating composition, method for preparation of coated glass using the coating composition, and cooking apparatus using the coated glass
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Solution Overview
Problem
Existing cooking apparatus coatings have low light transmittance, making it difficult for users to view the interior during cooking, and require high-temperature cleaning methods that are not suitable for door glass, necessitating a coating composition with higher light transmittance and easier cleaning capabilities.
Innovation Solution
A coating composition comprising 90-99% glass composition with 1-10% nanopowder, including zinc oxide, titanium dioxide, and other oxides, applied to glass substrates, providing a high light transmittance of at least 80% and haze of less than 5%, facilitating cleaning without high temperatures or soaking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a coating layer is formed on the door glass to facilitate cleaning, then cleaning performance is improved, but light transmittance decreases making it difficult to view the interior
Solution Approach 1:
The patent changes the chemical composition parameters of the glass coating by incorporating specific oxide combinations (P2O5 20-40 wt%, B2O3 10-25 wt%, ZnO 10-15 wt%, Al2O3 5-20 wt%, SiO2 30-60 wt%) to achieve a balance between cleaning performance and light transmittance. This compositional parameter optimization allows the coating to maintain high transparency while providing effective contaminant removal capabilities
Solution Approach 2:
The patent creates a composite glass coating material by combining multiple oxide components with complementary properties. P2O5 and B2O3 provide glass-forming network structures for transparency, while ZnO and Al2O3 contribute to surface hardness and cleaning resistance. This composite approach enables simultaneous achievement of optical clarity and cleaning performance
2Ease of manufacture
If a coating layer is formed on the door glass with traditional composition, then cleaning capability is provided, but high temperature and soaking conditions are required for effective cleaning
Solution Approach 1:
The patent modifies the chemical composition parameters to include specific amounts of ZnO (10-15 wt%) and B2O3 (10-25 wt%), which lower the melting point and enhance the softening behavior of the glass coating. This parameter change enables the coating to become more pliable at lower temperatures, allowing contaminants to be removed with simple wet cleaning at room temperature without requiring high-temperature or soaking conditions
3Ease of manufacture
If a coating layer is formed on the door glass to remove contaminants, then cleaning performance is improved, but the coating requires high temperature treatment which is not suitable for door glass
Solution Approach 1:
The patent optimizes the oxide composition ratios, particularly P2O5 (20-40 wt%) and B2O3 (10-25 wt%), to create a glass network structure that provides effective contaminant removal performance at lower temperatures. This compositional parameter adjustment allows the coating to achieve its cleaning function without requiring high-temperature treatment, making it compatible with door glass that cannot withstand extreme heat
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 coating composition ensures high visibility and easy cleaning of cooking apparatus interiors, allowing users to clearly view the cooking process and removing contaminants with a wet scrubber, while maintaining durability and thermophysical properties.
Implementation Method 1
A coating composition has a light transmittance of 80% or more in a visible light region and improves a haze property
Implementation Method 2
The nanopowder may comprise at least one of zinc oxide (ZnO), titanium dioxide (TiO2), tin oxide (SnO2), and indium tin oxide (ITO)
Implementation Method 3
a method for the preparation of a coated glass... firing the base material and the coating composition to form a coating layer on the base material
Implementation Method 4
The glass composition comprises 20 to 40 wt% of phosphorus pentoxide (P2O5), a total of 15 to 30 wt% of aluminum oxide (Al2O3) and zirconium dioxide (ZrO2)
Data Source
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AI summary
A coating composition may include a glass composition and a nanopowder. The nanopowder may include Zinc Oxide (ZnO) and may be added to a glass composition in 1 to 10 weight (wt%). The glass composition may include 20 to 40 wt% of phosphorus pentoxide (P2O5), a total of 15 to 30 wt% of aluminum oxide (Al2O3) and zirconium dioxide (ZrO2), a total of 10 to 30 wt% of sodium oxide (Na2O) and potassium oxide (K2O), 10 to 25 wt% of boron trioxide (B2O3), and 10 to 15 wt% of zinc oxide (ZnO).