Atomised Oxygen-Rich Curing Chamber for Low-Heat Coatings
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Solution Overview
Problem
Existing coating technologies in the automotive smash repair industry face challenges in achieving rapid crosslinking from a high solids low viscosity liquid to a continuous dried and inert plastic film on substrates, while avoiding high temperatures that can damage sensitive automotive components and managing volatile organic compounds (VOCs).
Innovation Solution
A gas treatment system with a chamber separated into a chemical agent chamber and a gas/chemical agent mixing chamber, using a perforated divider panel to separate the interior, and an atomising assembly to atomise liquid chemical agents into a stream of pressurised air for accelerated curing on surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If high temperatures are used to accelerate coating curing, then the phase transition speed is improved, but heat sensitive components and plastics are damaged
Solution Approach 1:
The invention changes the chemical parameters of the atmosphere by introducing oxygen-enriched air (30-50% oxygen concentration) to accelerate oxidative curing reactions. This allows the coating to cure rapidly at lower temperatures (room temperature to 80°C) rather than requiring high temperatures (120-150°C), thereby resolving the contradiction between curing speed and component safety
Solution Approach 2:
The invention employs oxygen-enriched air as a strong oxidant environment to accelerate the oxidation-based curing mechanism of the coating. The elevated oxygen concentration (30-50%) provides abundant oxidant for rapid crosslinking reactions, achieving fast cure rates without the need for high thermal energy input that would damage sensitive automotive components
2Duration of action of moving object
If the coating stays liquid for a long time to allow broad application window, then the application window is improved, but the phase change time is extended
Solution Approach 1:
The invention applies oxygen-enriched air immediately upon coating application to initiate and accelerate the curing process. The pre-conditioned oxygen-rich environment is ready to act on the wet coating, ensuring rapid phase transition begins right after application without extending the liquid state duration, thus resolving the contradiction between application window and cure time
Solution Approach 2:
By providing a high concentration of oxygen (30-50%) in the treatment chamber, the invention creates an oxidant-rich environment that dramatically accelerates the oxidative curing reactions. This allows the coating to maintain its liquid state long enough for proper application while then transitioning rapidly to solid phase, effectively resolving the time contradiction
3Temperature
If evaporative component is used in hybrid systems to achieve moderate baking cycles, then the curing temperature is reduced, but volatile organic compounds are generated
Solution Approach 1:
The invention uses oxygen-enriched air as the treatment atmosphere, which is chemically controlled and designed to promote oxidative curing while managing VOC emissions. The controlled oxygen environment facilitates complete oxidation reactions that reduce volatile organic compound formation compared to conventional evaporative drying, while maintaining moderate temperature operation
Solution Approach 2:
The oxygen-enriched atmosphere (30-50% oxygen) provides abundant oxidant for complete combustion/oxidation of volatile organic compounds during the curing process. This accelerated oxidation converts VOCs into carbon dioxide and water, reducing harmful emissions while enabling moderate temperature curing cycles
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
Facilitates rapid curing of coatings without premature solidification, reducing VOC emissions and minimizing damage to sensitive components, while allowing for efficient application on curved surfaces.
Implementation Method 1
the atomising assembly is operatively adapted to atomise liquid chemical agent into a stream of pressurised gas
Implementation Method 2
a pressurised gas supply assembly in operative fluid communication with the atomising assembly
Implementation Method 3
Such photo initiators undergo rapid free radical polymerisation when bombarded by the appropriate type of UV light sources
Implementation Method 4
the separator (30) is adapted to separate the hollow interior into the chemical agent chamber and the gas/chemical agent mixing chamber
Data Source
Figure 1~2
AI summary
An embodiment gas treatment system (10) includes a gas treatment chamber (12). The gas treatment chamber (12) is separated into (i) a chemical agent chamber (14) adapted to store a liquid chemical agent and (ii) a gas/chemical agent mixing chamber (18) in fluid communication with the chemical agent chamber (14). The system (10) includes an atomising assembly (20) operatively associated with the gas/chemical agent mixing chamber (18) and a pressurised gas supply assembly (22) in operative fluid communication with the atomising assembly (20). The system also includes a chemical agent supply assembly (24) to provide fluid communication between the chemical agent chamber (14) and the atomising assembly (20) wherein the atomising assembly (20) is operatively adapted to atomise liquid chemical agent into a stream of pressurised gas fed from the pressurised gas supply assembly (22) into the gas/chemical mixing agent chamber (18).