Thermo-Responsive Window Laminate With Adhesive-Layer Dimming
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing temperature-sensitive dimming liquid laminated bodies for windows and roofs require complex structures and significant manufacturing effort, making them difficult to implement.
Innovation Solution
A window and roof material comprising a light-transparent base material layer and an adhesive layer with temperature-sensitive fine particles that change refractive index with temperature, allowing the material to autonomously adjust cloudiness without a dedicated structure, using an adhesive composition containing 1 to 100 parts by mass of temperature-sensitive fine particles with respect to 100 parts by mass of an adhesive agent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a temperature-sensitive dimming liquid laminated body is provided in a window, then the window can autonomously change cloudiness in response to temperature, but the window structure becomes complicated and manufacturing requires significant time and labor
Solution Approach 1:
The patent combines the temperature-sensitive dimming liquid with the adhesive layer into a single integrated structure. The adhesive layer serves dual purposes: bonding the window panes together and containing the temperature-sensitive liquid, eliminating the need for separate containment structures and simplifying the overall window assembly.
Solution Approach 2:
The adhesive layer is designed to perform multiple functions simultaneously: structural bonding of window components and optical modulation through temperature-sensitive liquid containment. This multi-functionality reduces the number of separate components needed, thereby reducing structural complexity while maintaining autonomous dimming capability.
2Extent of automation
If a temperature-sensitive dimming liquid laminated body is provided in a window, then the window can autonomously change cloudiness in response to temperature, but manufacturing requires significant time and labor
Solution Approach 1:
The patent combines the temperature-sensitive dimming liquid with the adhesive layer into a single integrated structure. The adhesive layer serves dual purposes: bonding the window panes together and containing the temperature-sensitive liquid, eliminating the need for separate containment structures and simplifying the overall window assembly.
Solution Approach 2:
The patent specifies precise compositional parameters for the adhesive layer (1-100 parts by mass of temperature-sensitive fine particles per 100 parts by mass of adhesive agent) and refractive index characteristics to optimize both manufacturing feasibility and performance. These parameter specifications enable standardized production processes.
3Illumination intensity
If the refractive index reduction proportion is larger near the melting point, then the cloudiness change response is enhanced, but the material requires precise temperature control near melting point
Solution Approach 1:
The patent specifies precise compositional parameters for the adhesive layer (1-100 parts by mass of temperature-sensitive fine particles per 100 parts by mass of adhesive agent) and refractive index characteristics to optimize both manufacturing feasibility and performance. These parameter specifications enable standardized production processes.
Solution Approach 2:
The patent utilizes the phase transition properties of the temperature-sensitive liquid near its melting point, where the refractive index changes dramatically. This phase transition behavior is harnessed to achieve enhanced cloudiness change response, with the adhesive layer containing the liquid and maintaining it in a controlled state.
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 materials can easily change cloudiness in response to temperature, simplifying manufacturing and providing effective sunlight regulation in summer and winter without a complex structure.
Implementation Method 1
temperature-sensitive fine particles, a refractive index of which reduces with an increase in temperature
Data Source
AI summary
Provided are: a window material or a translucent roof material that is capable of autonomously changing the degree of cloudiness thereof according to the temperature, that does not have a complex structure, and is easy to produce; and a building, vehicle, ship, or aircraft provided with said window material and/or translucent roof material. This window material or translucent roof material is provided with at least one translucent base material layer and at least one tacky layer, wherein: the tacky layer comprises a tacky composition containing 1-100 parts by mass of temperature-sensitive microparticles with respect to 100 parts by mass of a pressure-sensitive adhesive; the refractive index of the temperature-sensitive microparticles decreases with increases in temperature; and the refractive index rate decrease, which is the amount of decrease in refractive index per 1° C., for the temperature-sensitive microparticles is greater near the melting point of the temperature-sensitive microparticles than in temperature ranges that are not near the melting point of the temperature-sensitive microparticles.