Aerogel Coating Composition for Strong Adhesion on Complex Surfaces
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Solution Overview
Problem
Existing methods struggle to form a coating film with sufficient strength and adhesiveness on complex surfaces using aerogel particles, necessitating separate adherence techniques.
Innovation Solution
A coating liquid containing two or more binder resins with different solubilities in a liquid medium, including a cellulose-based first binder resin and a thermoplastic acrylic resin, along with an inorganic fibrous substance, is used to enhance film strength and adhesiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a coating liquid containing aerogel particles and water-soluble binder is used, then the coating can be applied to complex surfaces, but the coating film strength and adhesiveness are insufficient
Solution Approach 1:
The patent combines aerogel particles with a composite binder system consisting of water-soluble binder (first binder resin) and thermoplastic resin (second binder resin). This composite material approach creates a coating film that integrates the thermal insulation properties of aerogel with the adhesive properties of water-soluble binder and the strength properties of thermoplastic resin, simultaneously achieving both applicability to complex surfaces and sufficient coating film strength.
Solution Approach 2:
The patent utilizes the temperature-dependent solubility parameter of the thermoplastic resin to control coating film formation. During application, the thermoplastic resin remains soluble in the water-based coating liquid, allowing easy application to complex surfaces. Upon drying or heating, the thermoplastic resin precipitates and forms a strong, adhesive coating film structure that entraps aerogel particles, thereby transforming the coating properties from application-friendly to strength-oriented through parameter change.
2Reliability
If molded material is produced separately and then adhered to the insulated object, then thermal insulation performance can be achieved, but additional adhesion processes and steps are required
Solution Approach 1:
The patent merges the thermal insulation function and the adhesion function into a single integrated coating system. The coating liquid contains aerogel particles for thermal insulation combined with a dual-resin binder system that provides both application flexibility and strong adhesion. This eliminates the need for separate molded material production and adhesion steps, reducing process complexity while maintaining reliable thermal insulation performance.
Solution Approach 2:
The coating liquid serves multiple functions simultaneously: it acts as both the thermal insulation material carrier and the adhesive agent for bonding to the insulated object. The water-soluble binder provides adhesion to complex surfaces, while the thermoplastic resin enhances coating film strength, and aerogel particles provide thermal insulation. This multi-functional coating eliminates the need for separate processes.
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 resulting coating film exhibits excellent strength and adhesiveness, suitable for applications as a thermal insulator.
Implementation Method 1
a coating liquid containing two or more binder resins with different solubilities in a liquid medium... to enhance coating film strength and adhesiveness
Implementation Method 2
two or more binder resins with different solubilities in a liquid medium... a first binder resin and a second binder resin having lower solubility in the liquid medium than the first binder resin
Implementation Method 3
a method for producing a coating film... comprising a step of removing the liquid medium from the coating liquid
Data Source
Figure 1
AI summary
The present invention relates to a coating liquid comprising an aerogel particle, a liquid medium, a first binder resin, a second binder resin, and a fibrous substance wherein the content of the second binder resin is higher than the content of the first binder resin.