Pulsed Infrared Curing of Intumescent Coatings
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Solution Overview
Problem
Existing methods for curing intumescent coatings are time-consuming and energy-intensive, which affects their efficiency in imparting fire resistance to substrates.
Innovation Solution
Applying pulsed infrared radiation to intumescent coating compositions to accelerate curing while maintaining fire performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional curing methods are used for intumescent coating compositions, then the coatings achieve adequate fire resistance, but the curing process consumes considerable time and energy
Solution Approach 1:
The patent applies pulsed infrared radiation instead of continuous heating to cure the intumescent coating composition. The periodic pulsed action delivers concentrated energy intervals that accelerate the curing reaction while allowing cooling intervals that reduce overall energy consumption and prevent excessive heat buildup, thereby resolving the contradiction between curing speed and energy efficiency
Solution Approach 2:
The patent changes the curing parameters by using infrared radiation with specific wavelengths that are optimally absorbed by the coating composition. By adjusting the pulse duration, frequency, and intensity of the infrared radiation, the curing process achieves faster reaction rates with reduced total energy input, addressing both the productivity improvement and energy consumption reduction
2Productivity
If conventional curing methods are used for intumescent coating compositions, then the coatings achieve adequate fire resistance, but the processing time is excessive
Solution Approach 1:
The pulsed infrared radiation delivers curing energy in concentrated periodic intervals, creating rapid temperature spikes that accelerate the crosslinking and curing reactions. This periodic energy delivery achieves complete curing in significantly reduced time compared to conventional continuous low-level heating methods
Solution Approach 2:
The infrared radiation is applied in a manner that preliminarily activates the curing reaction throughout the coating thickness simultaneously, rather than allowing gradual heat penetration from the surface. This preliminary uniform activation of the curing process across the entire coating reduces the total time required to achieve full cure
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
Significantly reduces curing time and energy consumption while preserving the fire-resistant properties of the coatings.
Implementation Method 1
applying pulsed infrared radiation to (i) the applied intumescent coating composition or to (ii) the self-supporting film or sheet to form a cured intumescent coating
Data Source
AI summary
The present disclosure relates to a method of imparting fire resistance to a substrate by applying an intumescent coating composition on a surface of a substrate or forming an intumescent coating composition into a self-supporting film or sheet and applying a pulsed infrared radiation to form a cured intumescent coating or a cured self-supporting film or sheet, and applying the self-supporting film or sheet to a part of a surface of the substrate. The present disclosure further relates to the use of an intumescent coating composition and use of pulsed infrared radiation.