Lustrous Coating Composition Using Silane Coupling Agent
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional resin films containing flaky titanic acid lack sufficient adhesion, leading to peeling issues in multilayer coating films due to weak interaction between hydrophilic flaky titanic acid and hydrophobic resins, especially in water-exposed applications like vehicle exteriors.
Innovation Solution
A lustrous coating material composition comprising flaky titanic acid treated with morpholine, a phosphoric acid group-containing resin, and an acrylic resin, which enhances adhesion and water resistance by improving compatibility and protecting the titanic acid surface, thereby forming films with excellent initial and water-resistant adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If flaky titanic acid is used to achieve silky texture and high luster, then lustrous appearance is improved, but adhesion to resin deteriorates due to weak interaction between hydrophilic titanic acid and hydrophobic resin
Solution Approach 1:
A silane coupling agent is introduced as an intermediary substance between the hydrophilic flaky titanic acid and hydrophobic resin. The silane coupling agent contains both hydrophilic and hydrophobic functional groups, allowing it to bond with both materials and bridge the incompatibility gap, thereby improving adhesion while maintaining the lustrous appearance provided by the titanic acid.
Solution Approach 2:
The surface properties of flaky titanic acid are modified by treating it with a silane coupling agent, changing its surface chemistry from purely hydrophilic to having both hydrophilic and hydrophobic characteristics. This parameter change in surface wettability enables better compatibility and adhesion with hydrophobic resins while preserving the optical properties.
2Shape
If flaky titanic acid is used in multilayer coating films, then silky texture is achieved, but water-resistant adhesion deteriorates leading to peeling in water-exposed applications
Solution Approach 1:
The silane coupling agent serves as a protective intermediary layer on the surface of flaky titanic acid particles within the multilayer coating film. This intermediary layer provides water resistance while maintaining the bonding capability between titanic acid and resin, preventing peeling in water-exposed applications like vehicle exteriors while preserving the silky texture.
Solution Approach 2:
A composite structure is formed by combining flaky titanic acid, silane coupling agent, and resin in a multilayer coating system. The composite material leverages the optical properties of titanic acid, the adhesion properties of silane coupling agent, and the structural properties of resin to achieve both silky texture and water-resistant adhesion simultaneously.
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 a lustrous resin film and multilayer coating film with a silky texture and high luster, exhibiting superior adhesion and water resistance, significantly reducing peeling occurrences.
Implementation Method 1
the phosphoric acid group-containing resin interacts with the surface of flaky titanic acid through adsorption, improving compatibility and adhesion
Data Source
AI summary
Provided is a lustrous coating material composition comprising a flaky titanic acid, a phosphoric acid group-containing resin, and an acrylic resin and being capable of forming a lustrous resin film which has a good silky texture with a high luster and which is sufficiently excellent in not only initial adhesion but also water-resistant adhesion with the occurrence of peeling being sufficiently suppressed.