Thermal Insulating Coating with Hollow Particles and Cold Pigments
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Solution Overview
Problem
Existing thermally insulating coatings for buildings struggle to provide opaque, heat-resistant, and solar-reflective surfaces, especially on metal claddings, while also needing to encapsulate asbestos and withstand outdoor conditions.
Innovation Solution
A coating composition comprising hollow polymeric particles and cold pigments, which reflect both visible and infrared radiation, combined with a polymerizable binder for metal claddings, offering a total solar reflection rate of at least 30% and encapsulating properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional thermally insulating coatings use materials like cork, kapok, and ceramic particles, then thermal insulation is improved, but opacity and solar reflection are insufficient
Solution Approach 1:
The patent combines hollow polymeric particles with cold pigments (titanium dioxide, zinc oxide, calcium carbonate) to create a composite coating system that simultaneously achieves thermal insulation, solar reflection, and opacity. This composite approach resolves the contradiction by integrating multiple functional materials that work together to address both thermal and solar radiation issues.
Solution Approach 2:
The use of hollow polymeric particles creates a porous structure within the coating that provides thermal insulation through trapped air pockets while the outer surface maintains opacity and solar reflection capabilities. The porous structure reduces thermal conductivity without compromising the coating's ability to reflect sunlight.
2Adaptability or versatility
If the coating uses dark pigments for aesthetic purposes, then color variety is improved, but heat absorption increases
Solution Approach 1:
The patent employs cold pigments including titanium dioxide, zinc oxide, and calcium carbonate that provide both coloration and high solar reflectance. These pigments can be combined in various ratios to create different shades and colors while maintaining the ability to reflect solar radiation, thus achieving both aesthetic versatility and thermal performance.
3Object-affected harmful factors
If the coating is made opaque to block heat, then solar reflection is improved, but thermal insulation may be compromised
Solution Approach 1:
The coating combines opaque cold pigments for solar reflection with hollow polymeric particles for thermal insulation. The cold pigments create an opaque barrier that reflects solar radiation, while the hollow particles provide thermal insulation through their low thermal conductivity and trapped air pockets, resolving the contradiction between opacity and insulation.
Solution Approach 2:
The patent addresses the contradiction by operating at different dimensional levels: the cold pigments provide surface-level solar reflection (2D surface property), while the hollow polymeric particles provide bulk thermal insulation (3D volume property). This multi-dimensional approach allows both functions to coexist without compromising each other.
4Reliability
If the coating is designed for metal claddings with polymerizable binders, then adhesion and durability are improved, but complexity of formulation increases
Solution Approach 1:
The patent uses polymerizable binders that undergo chemical transformation from liquid to solid state upon curing, changing the physical parameters of the coating system. This allows the formulation to remain workable during application while achieving durable, weather-resistant properties after curing, thus managing complexity through controlled parameter changes.
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 achieves effective thermal insulation, resistance to outdoor weathering, and encapsulation of asbestos, maintaining surface temperature and preventing heat transfer through radiation and conduction, while allowing for dark and dense color options without heating issues.
Implementation Method 1
the hollow polymeric particles reflect at least visible light and reduce the thermal conductivity of the coating obtained by polymerization of the composition of the invention
Implementation Method 2
The cold pigment in particular reflects infrared
Implementation Method 3
the hollow polymeric particles reflect at least visible light and reduce the thermal conductivity of the coating
Data Source
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AI summary
The present invention relates to a surface coating composition comprising hollow polymeric particles and a solvent that is predominantly water. Characteristically, according to the invention, it also contains at least one cold pigment other than titanium dioxide. The present invention also relates to a surface coated with a coating obtained from the composition of the invention.