Solar Dark Green Glass Composition for Thin Vehicle IR/UV Blocking
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Solution Overview
Problem
Current green glass products used in vehicles are too thick to meet the requirements for reduced infrared and ultraviolet transmittance while also considering vehicle weight reduction.
Innovation Solution
A solar dark green glass composition with specific weight percentages of total iron, titanium dioxide, cerium oxide, chromium(III) oxide, zirconium dioxide, copper(II) oxide, strontium oxide, barium oxide, and cobalt(III) oxide, along with a glass basic component, is developed, achieving a thickness of 1.6 mm-2.1 mm with reduced solar direct, infrared, and ultraviolet transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the thickness of green glass is increased to reduce infrared and ultraviolet transmittance, then the blocking performance is improved, but the vehicle weight increases
Solution Approach 1:
The patent changes the chemical composition parameters of the glass by introducing specific amounts of CeO2 (0.01-2.0 wt%), Cr2O3 (5-150 ppm), CuO (2-1000 ppm), and other metal oxides. These compositional parameter changes enable the glass to achieve enhanced infrared and ultraviolet blocking performance at reduced thickness (1.6-2.1mm), thereby reducing vehicle weight while maintaining or improving harmful radiation blocking
Solution Approach 2:
The patent creates a composite glass material by combining multiple metal oxide components (Fe2O3, TiO2, CeO2, Cr2O3, CuO, etc.) with the base glass matrix. This composite structure synergistically enhances the optical filtering properties, allowing the glass to block infrared and ultraviolet rays effectively at thinner sections, thus resolving the contradiction between blocking performance and weight
2Object-affected harmful factors
If the thickness of green glass is increased to achieve lower infrared and ultraviolet transmittance, then the solar radiation blocking is improved, but the glass cannot satisfy weight reduction requirements
Solution Approach 1:
The patent optimizes the chemical composition parameters including Fe2O3 (0.8-2.0 wt%), TiO2 (0.01-0.6 wt%), and other metal oxides to achieve enhanced solar radiation blocking. This compositional optimization allows the glass to maintain superior solar control performance at reduced thickness of 1.6-2.1mm, satisfying both solar radiation blocking requirements and weight reduction targets
3Weight of moving object
If the thickness of green glass is reduced to meet weight reduction requirements, then the vehicle weight is reduced, but the infrared and ultraviolet blocking performance deteriorates
Solution Approach 1:
The patent introduces specific compositional parameters including CeO2 (0.01-2.0 wt%), Cr2O3 (5-150 ppm), and CuO (2-1000 ppm) to enhance the optical filtering capabilities. These parameter changes enable the thinned glass (1.6-2.1mm) to maintain effective infrared and ultraviolet blocking, reversing the traditional relationship where thinner glass would perform worse
Solution Approach 2:
The patent modifies the color characteristics of the glass through controlled addition of metal oxide pigments (Fe2O3, Cr2O3, CuO, CoO). These color modifications are directly linked to enhanced absorption and reflection of infrared and ultraviolet wavelengths, allowing the thinned dark green glass to achieve superior solar control performance while meeting weight reduction requirements
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 solar dark green glass effectively reduces infrared and ultraviolet transmittance while maintaining a thinner profile, enhancing vehicle comfort and privacy, and meeting weight reduction requirements.
Implementation Method 1
reduce the transmission of infrared rays and ultraviolet rays... infrared transmittance less than or equal to 45%
Implementation Method 2
reduce the transmission of infrared rays and ultraviolet rays... ultraviolet transmittance less than or equal to 35%
Data Source
AI summary
A solar dark green glass and a vehicle are provided. The solar dark green glass includes a glass basic component and a glass tinted component. The solar dark green glass includes a glass basic component and a mass tinted component. The glass tinted component includes, as percentages by weight, 0.8%-2.0% total iron expressed as Fe2O3, 0.01%-0.6% TiO2, 0.001%-2.0% CeO2, 5 ppm-150 ppm Cr2O3, 15 ppm-60 ppm Zro2, 2 ppm-1000 ppm CuO, 5 ppm-50 ppm SrO, 80 ppm-200 ppm BaO, and 5 ppm-120 ppm Co2O3. A content of total iron expressed as Fe2O3 and a content of TiO2 total 1.0%-2.0%, and the content of TiO2 and a content of CeO2 total 0.2%-2.1%. The solar dark green glass manufactured has a thickness of 1.6 mm-2.1 mm, and solar direct transmittance less than or equal to 65%, infrared transmittance less than or equal to 45%, and ultraviolet transmittance less than or equal to 35%.