High-Solids Building Panel Coatings With Low-Flammability Color
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Solution Overview
Problem
Existing decorative coatings for building panels face challenges with manufacturing difficulties and increased flammability at high temperatures, while also compromising aesthetic properties.
Innovation Solution
A coated building panel with a surface coating comprising inorganic pigment and a polymeric dispersant with pendant side chains, using a liquid carrier content less than 1 wt.%, and a thixotropic edge coating with a glass transition temperature less than 20°C, achieving high solid content without aggregation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If traditional decorative coatings are applied to building panels, then aesthetic properties are improved, but manufacturing time increases and flammability increases at high temperatures
Solution Approach 1:
The patent changes the parameter of liquid carrier content from traditional high levels (e.g., 50-80 wt.%) to very low levels (less than 1 wt.%), creating a high solids content coating. This parameter change reduces manufacturing time while maintaining aesthetic properties through the use of inorganic pigments and polymeric dispersants that form stable coatings with minimal liquid carrier.
2Illumination intensity
If traditional decorative coatings are applied to building panels, then aesthetic properties are improved, but flammability increases at high temperatures
Solution Approach 1:
The patent changes the chemical composition parameters by using inorganic pigments instead of organic colorants and employing polymeric dispersants with specific molecular structures. These parameter changes result in a coating that maintains aesthetic properties while significantly reducing flammability, as inorganic materials generally exhibit better fire resistance compared to traditional organic-based decorative coatings.
3Productivity
If high solids content coating is used, then manufacturing efficiency is improved and flammability is reduced, but coating application becomes more difficult
Solution Approach 1:
The patent introduces polymeric dispersants as intermediary substances that facilitate the uniform distribution and stable suspension of inorganic pigments in the high solids content coating. These dispersants act as mediators between the pigment particles and the minimal liquid carrier, enabling easy coating application despite the high solids content by reducing particle aggregation and improving flow characteristics.
Solution Approach 2:
The patent creates a composite coating material consisting of inorganic pigments, polymeric dispersants, and minimal liquid carrier. This composite structure combines the advantages of inorganic materials (fire resistance, aesthetic properties) with the functional benefits of polymeric dispersants (dispersion stability, application ease), resulting in a coating that is both efficient to manufacture and easy to apply.
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 decorative coating that maintains aesthetic properties while improving manufacturing efficiency and reducing flammability, with a high solid content and low liquid carrier usage.
Implementation Method 1
a polymeric dispersant comprising a polymer backbone and pendant side chains extending from the polymer backbone
Implementation Method 2
applying a thixotropic coating composition to the side surface
Implementation Method 3
drying the coating composition to form the face coating
Data Source
AI summary
Described herein is a coated building panel having a body and a surface coating atop the body, the surface coating comprising inorganic pigment and a polymeric dispersant comprising a polymer backbone and pendant side chains extending from the polymer backbone; wherein the surface coating comprises a liquid carrier in an amount less than about 1 wt. % based on the total weight of the surface coating.