Antifouling Copolymer Coating for Draft Section Performance
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Solution Overview
Problem
Antifouling coating films using triisopropylsilyl ester copolymers exhibit excellent physical properties but fail to provide sufficient antifouling performance in the waterline draft section due to repeated dry and wet cycles and exposure to sunlight, leading to adhesion of aquatic fouling organisms.
Innovation Solution
A copolymer for antifouling coating compositions is developed by copolymerizing a triorganosilyl (meth)acrylate monomer with ethylenically unsaturated monomers, such as (meth)acrylate esters and vinyl compounds, to form a coating film that maintains long-term dissolution and antifouling performance, even in areas prone to fouling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a copolymer containing triisopropylsilyl ester is used to form an antifouling coating film, then the physical properties (crack resistance and stability) are improved, but the antifouling performance in the draft section is insufficient due to repeated dry and wet cycles and sunlight exposure
Solution Approach 1:
The patent modifies the chemical structure of the silyl ester group by changing the alkyl chain length and composition (from triisopropylsilyl to triorganyl silyl with specific R1-R6 groups). This parameter change in the molecular structure improves the coating film's resistance to degradation under UV exposure and repeated wet-dry cycles, thereby maintaining antifouling performance in the draft section while preserving physical properties.
Solution Approach 2:
The patent creates a composite polymer system by copolymerizing the triorganosilyl (meth)acrylate monomer with other ethylenically unsaturated monomers. This composite approach combines the benefits of the silyl ester group (controlled release and antifouling performance) with the complementary properties of co-monomers, resulting in a coating film that maintains both physical integrity and antifouling effectiveness in harsh draft section environments.
2Object-affected harmful factors
If the coating film is exposed to repeated dry and wet cycles and sunlight in the draft section, then the physical degradation increases, but the antifouling performance deteriorates
Solution Approach 1:
The patent designs the triorganosilyl (meth)acrylate structure to specifically withstand and benefit from UV exposure and wet-dry cycling. The silyl ester group's controlled release mechanism is engineered to maintain effectiveness after environmental stress, converting potential degradation into sustained antifouling performance in the draft section where these factors are most severe.
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 copolymer-based antifouling coating film effectively prevents adhesion of aquatic fouling organisms in the draft section, maintaining performance and film integrity over time despite environmental exposure.
Implementation Method 1
the antifouling coating film formed by using the antifouling coating composition using the above copolymer can continue to dissolve for a long period of time
Implementation Method 2
exhibit good antifouling performance and realize good antifouling performance even in the draft section, where adhesion of aquatic fouling organisms is easy to occur
Data Source
AI summary
The present invention provides a copolymer for an antifouling coating composition which can form an antifouling coating film which can continue to dissolve for a long period of time, exhibit good antifouling performance and realize good antifouling performance even in the draft section, where adhesion of aquatic fouling organisms is easy to occur. According to the present invention, a copolymer for an antifouling coating composition obtained by copolymerizing a monomer (a) and an ethylenically unsaturated monomer (b) other than the monomer (a), wherein the monomer (a) is represented by general formula (1) is provided.