Water-Based Thermal-Insulation Coating for Defect-Free High-Temperature Drying
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Solution Overview
Problem
Conventional solvent-based coating materials for color steel plates and automotive paints undergo excessive solvent volatilization during high-temperature baking, leading to environmental pollution, while water-based alternatives often result in defective coating films with poor adhesion and thermal insulation performance.
Innovation Solution
A water-based thermal-insulation coating material comprising a water-based resin with a minimum film-forming temperature of at least 5°C, a film forming auxiliary agent with controlled volatility, and hydrated silicon dioxide, which includes acrylic, polyurethane, or epoxy resins, and inorganic powders, allowing for effective high-temperature drying without premature film formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If solvent-based coating materials are used, then adhesion strength and film formation are improved, but excessive solvent volatilization occurs causing environmental pollution
Solution Approach 1:
The patent changes the solvent parameter from organic solvent to water, fundamentally altering the coating material's composition. This parameter change eliminates harmful solvent volatilization while maintaining coating performance through careful selection of water-based resins and film-forming auxiliaries with controlled volatility
Solution Approach 2:
The patent converts the potential harm of water-based coating premature film formation into a benefit by carefully controlling the film-forming temperature range. The water evaporates cleanly without pollution, and the controlled film formation process is used to achieve uniform coating distribution and excellent adhesion
2Object-generated harmful factors
If water-based coating materials are used to reduce solvent volatilization, then environmental pollution is reduced, but premature film formation occurs causing surface defects
Solution Approach 1:
The patent changes the physical-chemical parameters of the water-based coating system by selecting resins with specific glass transition temperatures and using film-forming auxiliaries with controlled boiling points (200-400°C). These parameter changes ensure the coating remains fluid during application and only forms a uniform film at elevated drying temperatures
Solution Approach 2:
The patent applies preliminary action by pre-heating the coating before it dries, ensuring that the film-forming temperature is reached uniformly across the coating layer. This prevents premature film formation at the surface while the interior is still drying, avoiding pinholes and blisters
3Object-generated harmful factors
If water-based coating materials are used, then environmental pollution is reduced, but adhesion strength deteriorates due to premature film formation
Solution Approach 1:
The patent changes the chemical composition parameters by selecting water-based resins with specific molecular structures and glass transition temperatures that ensure proper adhesion. The film-forming auxiliaries are chosen to maintain coating flexibility and bonding capability throughout the drying process
Solution Approach 2:
The patent uses composite materials by combining water-based resins with specific film-forming auxiliaries and pigments in optimized ratios. This composite formulation ensures that the coating maintains adhesion strength while eliminating harmful solvent volatilization
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 effectively reduces carbon emissions, replaces solvent-based coatings without altering manufacturing processes, and provides excellent thermal insulation and adhesion, preventing defects like pinholes, blisters, and cracks during high-temperature drying.
Implementation Method 1
The water-based resin is formed by a water-based resin composition through an emulsion polymerization reaction
Implementation Method 2
The thermal insulation agent is hydrated silicon dioxide
Implementation Method 3
during the high-temperature baking process
Data Source
AI summary
A water-based thermal-insulation coating material includes a water-based resin, a film forming auxiliary agent, and a thermal insulation agent. The water-based resin is at least one material selected from a group consisting of: acrylic resins, polyurethane resins, epoxy resins, and combinations thereof. The water-based resin has a minimum film-forming temperature of not less than 5° C. The film forming auxiliary agent is at least one material selected from a group consisting of: plasticizers, alcohol-ether solvents, alcohol-ester solvents, a mixed solvent of ethylene glycol mono-butyl ether and di-propylene glycol butyl ether, aprotic solvents, and combinations thereof. The thermal insulation agent is hydrated silicon dioxide.