Wall Insulation Coating with Polymer Micro-Beads for Flexible Thermal Barriers
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Solution Overview
Problem
Existing thermal insulation coatings for buildings are inflexible and limited in applicability to special-shaped structures, and the inclusion of inorganic mineral fillers increases thermal conductivity, reducing insulation performance.
Innovation Solution
An aqueous coating composition comprising at least 65 wt % of an aqueous dispersion of polymer particles and 5 wt % to 15 wt % of expanded organic polymer micro-beads, with optional additives, forms a thermal insulation coating that is free of inorganic mineral fillers, providing excellent elasticity and stability, suitable for special-shaped structures, and enhances thermal insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If inorganic mineral fillers are added to thermal insulation coating, then coating strength and coverage are improved, but thermal conductivity increases reducing insulation performance
Solution Approach 1:
The patent removes inorganic mineral fillers from the coating composition entirely, replacing them with organic polymer micro-beads that provide both structural support and thermal insulation properties, thereby eliminating the harmful thermal conduction path while maintaining coating integrity
Solution Approach 2:
The patent creates a composite coating system combining polymer particles, expanded organic polymer micro-beads, and aerogel in specific proportions, where the synergistic combination provides both mechanical strength and superior thermal insulation performance without relying on inorganic fillers
2Loss of energy
If traditional thermal insulation coatings are used, then thermal insulation effect is achieved, but flexibility is low limiting applicability to special-shaped structures
Solution Approach 1:
The patent modifies the coating's physical parameters by incorporating expanded organic polymer micro-beads and aerogel, which change the coating's mechanical properties to enhance flexibility and elasticity while maintaining thermal insulation performance, enabling application on complex curved surfaces
Solution Approach 2:
The patent utilizes the porous structure of expanded organic polymer micro-beads and aerogel, which provide both thermal insulation through air pockets and flexibility through the open-cell structure, allowing the coating to conform to special-shaped building structures
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 coating achieves long-term storage stability, resistance to substrate cracking, and effective thermal insulation with a low thickness, while combining with a hydrophobic primer and reflective topcoat for enhanced heat reflection and insulation performance.
Implementation Method 1
at least 5 wt % of expanded organic polymer micro-beads
Implementation Method 2
reflective thermal insulation coating system
Implementation Method 3
the thermal insulation coating for walls formed by such an aqueous coating composition has excellent elasticity, can well resist the problem of substrate cracking
Implementation Method 4
(A) a hydrophobic primer, having a water permeability of at most 0.3 mL/24 hours
Implementation Method 5
(C) a thermal reflective top coat, having a solar reflectance of at least 85% and/or a hemispherical emittance of at least 85%
Data Source
AI summary
The present disclosure relates to an aqueous coating composition for forming a thermal insulation coating for walls and a reflective thermal insulation coating system for walls containing the thermal insulation coating. In particular, the aqueous coating composition comprises, based on the total weight of the aqueous coating composition, at least 65 wt % of an aqueous dispersion of polymer particles; at least 5 wt % of expanded organic polymer micro-beads; at least 10 wt % water; and 0 to 15 wt % of additional additives, comprising thickeners, dispersants, wetting agents, defoamers, pH adjustors, film-forming aids, hydrophobic agents, coupling agents, bactericides, and antifungal agents or any combination thereof.