Aqueous Coating Film Adhesion via Phosphonobutanetricarboxylic Acid
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Solution Overview
Problem
Conventional water-based coating formulations face challenges with adhesiveness, durability, and solvent resistance, particularly in forming conductive films for electrodes in electricity storage devices, where they often exhibit poor adhesion and high internal resistance, leading to issues like peeling and cracking.
Innovation Solution
An aqueous liquid composition comprising a water-based medium with a polymer containing hydroxyl or amino groups and phosphonobutanetricarboxylic acid, which forms a functional coating film with excellent adhesiveness, durability, and solvent resistance, capable of exhibiting electrical conductivity and hydrophilicity, using components like chitosan and polyacrylic acid, and incorporating conductive materials for improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If water is used as a solvent in coating formulations, then environmental load is reduced and safety is improved, but film-forming ability deteriorates and adhesiveness to base material decreases
Solution Approach 1:
The patent changes the chemical parameters of the water-based coating formulation by incorporating specific polymers (polyacrylic acid, polyvinyl alcohol, carboxymethyl cellulose) and phosphonobutanetricarboxylic acid to adjust the formulation's properties. This enables water-based coatings to achieve adequate film-forming ability and adhesiveness while maintaining environmental benefits
Solution Approach 2:
The patent creates a composite water-based coating system combining multiple components: polymers with carboxyl or hydroxyl groups, phosphonobutanetricarboxylic acid, and conductive materials. This composite approach synergistically improves film-forming ability, adhesiveness, and conductivity while using water as the environmentally friendly solvent
2Object-affected harmful factors
If water-based coating formulations are used, then solvent safety is improved, but adhesiveness to base material and durability deteriorate
Solution Approach 1:
The patent modifies the chemical composition parameters by incorporating polymers with specific functional groups (carboxyl groups in polyacrylic acid, hydroxyl groups in polyvinyl alcohol) that enhance adhesion to base materials. The phosphonobutanetricarboxylic acid further adjusts the formulation to improve durability and bonding strength
Solution Approach 2:
The patent uses polymers as intermediary substances between the water-based solvent and the base material. These polymers act as adhesion promoters, forming strong bonds with the base material surface while remaining compatible with the aqueous environment, thus improving adhesiveness without compromising safety
3Object-affected harmful factors
If water-based formulations are used for conductive coatings, then environmental impact is reduced, but electrical conductivity and internal resistance performance deteriorate
Solution Approach 1:
The patent develops a composite conductive coating formulation incorporating conductive materials (such as metal particles, carbon materials) within the water-based matrix. This composite structure enables the coating to achieve adequate electrical conductivity and low internal resistance while maintaining the environmental benefits of water-based formulations
4Object-affected harmful factors
If conventional water-based dispersants are used, then environmental friendliness is improved, but dispersing ability and stability deteriorate
Solution Approach 1:
The patent changes the chemical parameters of the dispersant system by using polymers with specific functional groups (carboxyl groups in polyacrylic acid, hydroxyl groups in carboxymethyl cellulose) and phosphonobutanetricarboxylic acid. These compositional changes enable the environmentally friendly water-based dispersant to achieve adequate dispersing ability and long-term stability
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 solution provides a coating film with enhanced adhesiveness and durability, reduced internal resistance, and improved electrical conductivity, enabling the creation of high-performance electrode plates for energy storage devices with extended charge-discharge cycles and increased energy density.
Implementation Method 1
the coating film to be formed is required to be equipped with durability and high adhesiveness to a base material
Implementation Method 2
An aqueous liquid composition comprising a water-based medium with a polymer containing hydroxyl or amino groups and phosphonobutanetricarboxylic acid
Implementation Method 3
capable of exhibiting electrical conductivity and hydrophilicity, using components like chitosan and polyacrylic acid, and incorporating conductive materials for improved performance
Implementation Method 4
As solvents (dispersion media) for such coating formulations, nonaqueous (organic solvent-based) solvents, which exhibit high compatibility with base materials and can be readily dried
Data Source
AI summary
An aqueous liquid composition contains a water-based medium containing water, a polymer having at least one type of groups selected from hydroxyl groups and amino groups, and phosphonobutanetricarboxylic acid. The aqueous liquid composition contains low-cost materials having low environmental load, can retain adequate viscosity even when stored over a long term, and can form a functional coating film having excellent adhesiveness to a base material and superb durability, solvent resistance and waterproofness and capable of exhibiting various functions led by electrical conductivity and hydrophilicity.