Radical-Polymerizable Resin Composition for Wet Surface Curing
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Solution Overview
Problem
Existing radical-polymerizable resin compositions face challenges in curing stably on dry, wet, and submerged surfaces, particularly in water and seawater environments, leading to inadequate adhesion and prolonged curing times, which complicates repairs and construction of concrete structures and underwater infrastructure.
Innovation Solution
A radical-polymerizable resin composition combining metal-containing compounds like metal soaps and β-diketone skeleton-containing metal complexes with secondary or tertiary thiol compounds, which coordinate around the metal to prevent deactivation by water, allowing stable curing in wet conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If metal soap is used as a curing accelerator, then curing speed is improved, but curing performance deteriorates in the presence of water
Solution Approach 1:
The patent introduces an accelerator aid as an intermediary substance that mediates between the metal soap and water. The accelerator aid protects the metal soap from deactivation by water while maintaining its curing acceleration function, enabling effective curing in wet environments
Solution Approach 2:
The patent changes the chemical environment by introducing accelerator aids that alter the reaction parameters. This allows the metal soap to maintain its high-speed curing capability while becoming resistant to water deactivation through modified chemical interactions
2Strength
If conventional resin compositions are used for submerged structures, then adhesion is improved on dry surfaces, but curing stability deteriorates on wet and submerged surfaces
Solution Approach 1:
The accelerator aid acts as an intermediary that enables the resin composition to maintain both strong adhesion and stable curing in water. It protects the curing system from water interference while preserving the adhesive properties on various surface conditions
Solution Approach 2:
The patent creates a universal resin composition that can cure effectively across multiple environments (dry, wet, and submerged surfaces) by incorporating accelerator aids that provide multi-functional protection against water deactivation while maintaining adhesion performance
3Strength
If water removal is performed before repair, then adhesion is improved, but construction time and complexity increase
Solution Approach 1:
The resin composition with accelerator aid has the self-service capability to cure effectively in the presence of water without requiring external water removal operations. The composition itself provides the necessary protection against water deactivation, eliminating the need for separate drying steps
Solution Approach 2:
The accelerator aid serves as an intermediary that eliminates the need for water removal by providing chemical protection against water deactivation, allowing direct application on wet surfaces and significantly reducing preparation time
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
Enables rapid and stable curing on dry, wet, and submerged surfaces, ensuring strong adhesion and reducing the need for extensive drying processes, thus facilitating efficient repairs and construction in challenging environments.
Implementation Method 1
secondary or tertiary thiol compounds, which coordinate around the metal to prevent deactivation by water
Implementation Method 2
radical-polymerizable resin composition comprising one or more metal-containing compounds (A), one or more thiol compounds (B), and a radical-polymerizable compound (C)
Data Source
AI summary
A radical-polymerizable resin composition comprising one or more metal-containing compounds (A) selected from a metal soap (A1) and a β-diketone skeleton-containing metal complex (A2); one or more thiol compounds (B) selected from a secondary thiol compound (B1) and a tertiary thiol compound (B2); and a radical-polymerizable compound (C) can stably cure under a dry condition, in water and in seawater and further on a wet substrate. The radical-polymerizable resin composition is useful as a repairing material for inorganic structure, a radical-polymerizable coating composition, a concrete spall preventing curable material, a reinforcing fiber-containing composite material, etc.