Antifouling Coating Composition with Composite Binder System
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing antifouling coating compositions with hydrolyzable resins and antifouling agents struggle to maintain high antifouling performance over a long term due to high consumption rates of the coating film.
Innovation Solution
The antifouling coating composition incorporates a hydrolyzable resin, a first non-hydrolyzable resin, a second non-hydrolyzable resin, and an antifouling agent, which allows for efficient release of antifouling components and maintains performance with a low consumption rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hydrolyzable resin is used as the binder in the antifouling coating composition, then the antifouling coating film can be renewed gradually and exhibit antifouling performance over a long term, but the coating film consumption rate becomes high which reduces the duration of protection
Solution Approach 1:
The invention uses a composite binder system combining a hydrolyzable resin (providing antifouling performance through gradual hydrolysis and surface renewal) with a non-hydrolyzable resin (providing structural integrity and low consumption rate). This composite approach allows the coating film to maintain both high antifouling performance and low consumption rate, resolving the contradiction between reliability and substance loss.
Solution Approach 2:
The invention modifies the chemical parameters of the binder by introducing a non-hydrolyzable resin component with specific properties (glass transition temperature, hydrophobicity) to complement the hydrolyzable resin. This parameter change enables the coating to achieve both slow consumption rate and high antifouling performance by balancing the degradation characteristics of the two resin types.
2Reliability
If the coating film is designed to have high consumption rate to release antifouling agents, then antifouling performance is improved, but the duration of protection is reduced
Solution Approach 1:
The composite binder system allows the coating film to release antifouling agents at an optimized rate. The hydrolyzable resin component ensures sufficient agent release for high antifouling performance, while the non-hydrolyzable resin component maintains structural stability and extends the duration of protection, resolving the contradiction between performance and duration.
Solution Approach 2:
The invention ensures continuous antifouling protection by combining a hydrolyzable resin that gradually releases antifouling agents over time with a non-hydrolyzable resin that maintains continuous structural integrity. This continuous action allows the coating to provide high antifouling performance while extending the overall duration of protection.
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 composition achieves both a low consumption rate and high antifouling performance, extending the duration of effective antifouling protection for ships and underwater structures.
Implementation Method 1
the surface of an antifouling coating film formed of this antifouling coating composition is always renewed as the triorganosilyl group is gradually hydrolyzed in water
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Provided is an antifouling coating composition containing a hydrolyzable resin (A), a first non-hydrolyzable resin (B), a second non-hydrolyzable resin (C), and an antifouling agent (D), in which a glass transition temperature TgB [°C] and a solubility parameter SPB of the first non-hydrolyzable resin (B), and a glass transition temperature Tgc [°C] and a solubility parameter SPc of the second non-hydrolyzable resin (C) satisfy an expression [1]: TgB - Tgc ≥ 60, an expression [2]: SPB ≥ 9.5, an expression [3]: SPc ≥ 9.5, and an expression [4]: |SPB - SPC| ≤ 1.0.