Multilayer Solar Control Coating for Heat-Resistant Glass
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing glass coatings lack effective solar control properties, mechanical strength, heat resistance, and durability, failing to efficiently manage solar radiation and maintain user comfort while being cost-effective.
Innovation Solution
A multilayer coating system comprising dielectric and metallic layers, including Si3N4, Nb, Ni-Cr, and TiN, applied via sputtering, to provide solar control, mechanical strength, and heat resistance, with specific layer thicknesses and materials selected for optimal performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single-layer coating is applied to glass, then the manufacturing process is simple and cost-effective, but the coating cannot simultaneously achieve solar control, mechanical strength, heat resistance, and durability
Solution Approach 1:
The coating system is divided into multiple functional layers: a first layer containing semiconductor metal oxide particles embedded in a transparent resin matrix for solar control, and a second protective layer for mechanical strength and durability. This segmentation allows each layer to specialize in specific functions, resolving the contradiction between manufacturing simplicity and performance reliability.
Solution Approach 2:
The invention uses composite materials by embedding semiconductor metal oxide particles (TiO2, ZnO, SnO2, etc.) within a transparent resin matrix, and combining this with a protective coating layer. This composite structure enables the coating to achieve multiple properties simultaneously: solar radiation control from the semiconductor particles, optical transparency from the resin matrix, and mechanical protection from the outer layer.
2Object-affected harmful factors
If the coating blocks infrared radiation effectively, then solar control performance improves, but visible light transmission decreases
Solution Approach 1:
The coating exhibits local quality by selectively controlling radiation at different wavelengths: semiconductor metal oxide particles (particularly TiO2 with anatase crystal structure) are effective at blocking infrared radiation while remaining transparent to visible light. This wavelength-selective property allows the coating to block harmful infrared radiation without significantly reducing visible light transmission, resolving the contradiction between solar control and illumination.
3Strength
If the coating achieves high mechanical strength and heat resistance, then durability improves, but the complexity of the coating system increases
Solution Approach 1:
The invention extracts and separates the protective function into a distinct second layer applied over the solar control layer. This allows the solar control functionality (semiconductor particles in resin) and mechanical protection functionality to be independently optimized and applied, reducing overall system complexity while achieving high durability through the specialized protective layer.
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 solar transmission control, mechanical durability, and heat resistance, reducing solar radiation and enhancing energy efficiency, while maintaining visible light transmission and resisting chemical and thermal stress.
Implementation Method 1
The coating is composed of several layers of dielectric and metallic materials applied by the process known as sputtering or cathode pulverizing
Implementation Method 2
a layer of an infrared reflective metal (Nb)...which provide solar control properties as well as heat and mechanical resistance
Implementation Method 3
a stack of films or thin layers, which are superimposed on the substrate in a predetermined order... comprising: a dielectric material (Si3N4)... a second material with dielectric properties (TiO2)
Data Source
AI summary
The invention relates to a glass substrate including a stack of coating layers having control properties, in which stack comprises at least one niobium metal layer located between a layer of a dielectric material selected from Si3N4 or TiOx and a layer of a protective metal material selected from TIN or Ni—Cr, conferring solar control and heat resistance properties on the glass substrate.