Carboxylic Ester Antifouling Coating for Stable Seawater Dissolution
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Solution Overview
Problem
Existing antifouling coating compositions experience excessive initial dissolution and film defects such as cracks, leading to a need for improved stability and durability.
Innovation Solution
An antifouling coating composition comprising a carboxylic acid ester Q and an antifouling agent, including cuprous oxide and copper thiocyanate, is formulated to maintain a stable coating film dissolution rate and prevent defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If an antifouling coating composition is applied to provide long-term antifouling performance through gradual release of antifouling agent, then the duration of action is improved, but coating film dissolution becomes excessively large at the initial stage and coating film defects such as cracks occur after a relatively short period of time
Solution Approach 1:
The patent modifies the chemical composition parameters of the coating film by incorporating specific carboxylic acid esters with controlled molecular weights and functional groups. This changes the dissolution kinetics of the coating, enabling a more gradual and stable release profile that prevents both excessive initial dissolution and long-term film degradation, thereby maintaining reliability throughout the service life while preserving the desired duration of antifouling action
Solution Approach 2:
The patent employs a composite coating formulation combining multiple components including carboxylic acid esters, antifouling agents, and other resin components in specific proportions. This composite structure allows the different components to work synergistically: the carboxylic acid ester matrix provides controlled dissolution characteristics while the embedded antifouling agents are released gradually, achieving both long-term performance and film stability
2Duration of action of stationary object
If an antifouling coating composition is designed to release antifouling agent gradually over time, then the duration of action is improved, but coating film defects such as cracks occur after a relatively short period of time
Solution Approach 1:
The patent adjusts the molecular weight distribution and functional group composition of the carboxylic acid esters to optimize the balance between film flexibility and strength. By controlling parameters such as the ratio of ester groups to hydrocarbon chains and the molecular weight range, the coating maintains adequate mechanical strength and crack resistance throughout its service life while still enabling the desired gradual release of antifouling agents over extended periods
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 ensures long-term stability and maintains antifouling performance by preventing coating film defects and ensuring consistent dissolution.
Implementation Method 1
capable of maintaining a stable coating film dissolution rate in seawater over a long period of time
Data Source
AI summary
The present invention provides an antifouling coating composition capable of maintaining a stable coating film dissolution rate in seawater over a long period of time, and capable of maintaining stable antifouling performance without causing coating film defects such as cracks. According to the present invention, there is provided an antifouling coating composition comprising a carboxylic acid ester Q represented by general formula (1) and an antifouling agent.