Cure-on-Demand Polymer Coatings Without Mixing or VOCs
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Solution Overview
Problem
Thermoset polymeric coatings require precise mixing of two components and have a limited pot life, often using solvents that produce VOCs, complicating application and increasing environmental pollution.
Innovation Solution
A resin composition comprising a monomer with reactive functionality, an initiator with thiol functionality, silica, milled carbon fiber, and urease, which is activated by a base catalyst to polymerize on demand, eliminating the need for mixing and reducing VOCs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two-component thermoset polymeric coatings are used, then the coating forms a durable protective layer, but the components must be precisely mixed and have limited pot life
Solution Approach 1:
The patent combines two separate components (resin and hardener) into a single one-pot formulation containing all necessary reactive components. This eliminates the need for precise mixing of multiple components while maintaining the durable protective properties of thermoset coatings through controlled polymerization upon exposure to moisture or specific triggers.
Solution Approach 2:
The patent incorporates latent curing agents and catalysts within the one-pot formulation that remain dormant until exposure to specific environmental triggers (moisture, pH change, temperature). This preliminary preparation allows the coating to be applied without immediate reaction, then activates the crosslinking process after application to achieve durable bonding.
2Ease of operation
If solvents are used to reduce viscosity, then the coating becomes easier to apply, but VOCs are produced causing environmental pollution
Solution Approach 1:
The patent changes the physical-chemical parameters of the coating formulation by using water-based or solvent-free systems with modified resin architectures. This achieves reduced viscosity and improved applicability without relying on volatile organic solvents, thereby eliminating VOC emissions while maintaining ease of application through controlled rheology.
Solution Approach 2:
The patent converts the traditionally harmful role of solvents into a beneficial function by using water or controlled humidity as the dispersion medium. The moisture that would normally be considered a contaminant or source of VOCs is instead utilized as a trigger for controlled polymerization and crosslinking, achieving both environmental sustainability and functional performance.
3Reliability
If two-component coatings are used, then the coating achieves proper curing, but accurate measurement and careful mixing are required
Solution Approach 1:
The patent merges the resin, hardener, catalyst, and curing agents into a single pre-formulated one-pot system. This eliminates the need for separate measurement and mixing of multiple components, as all elements are pre-proportioned and stabilized within the unified formulation, ensuring complete curing without requiring precise manufacturing precision during application.
Solution Approach 2:
The one-pot formulation contains self-regulating mechanisms where the relative amounts of reactive components are built into the formulation itself. The system self-adjusts the curing process through controlled interactions between components upon exposure to environmental triggers, eliminating the need for external measurement and mixing precision while ensuring reliable curing.
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 a one-pot formulation with zero VOCs, allowing controlled polymerization through pH adjustment, providing a stable and efficient coating process.
Implementation Method 1
about 0.1-5 phr of at least one source of urease
Implementation Method 2
the initiator is capable of being activated using a base catalyst
Data Source
AI summary
The present disclosure relates to method of depositing a coating over a substrate, The present disclosure also relates to a resin composition and a polymerized coating disposed over a substrate.