Transparent Heat-Insulating Material with Cross-Linked Nanoparticles
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Solution Overview
Problem
Current heat insulating materials have impaired transparency due to insufficient light transmittance, which limits their application in designs requiring both heat insulation and transparency, such as windows and certain products like refrigerators and bathtubs.
Innovation Solution
A structure comprising nanoparticles or nanofibers surface-coated with amphipathic molecules or organic silane molecules, coupled via a cross-linking part to prevent aggregation and form air gaps, enhancing light transmittance while maintaining heat insulation performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional heat insulating materials are used, then heat insulation performance is achieved, but light transmittance is insufficient
Solution Approach 1:
The heat insulating material is segmented into discrete nanoparticles or nanofibers with diameters of 10 nm or less, which are spaced apart to form air gaps. This segmentation allows light to pass through the gaps while the dispersed particles maintain heat insulation performance, resolving the contradiction between transparency and insulation.
Solution Approach 2:
The invention uses a porous structure formed by dispersing nanoparticles or nanofibers with air gaps between them. The porosity allows light transmission while the air-filled spaces provide thermal insulation, simultaneously achieving both high light transmittance and effective heat insulation.
2Illumination intensity
If nanoparticles are dispersed to improve light transmittance, then transparency increases, but aggregation occurs reducing insulation performance
Solution Approach 1:
An amphipathic molecule is used as an intermediary substance to coat the surface of nanoparticles or nanofibers. This coating prevents particle aggregation by providing steric or electrostatic repulsion, maintaining stable dispersion and ensuring both light transmittance and heat insulation performance are preserved.
3Illumination intensity
If particle size is reduced to increase transparency, then light transmittance improves, but particle aggregation increases
Solution Approach 1:
The amphipathic molecule acts as a protective intermediary coating on nanoparticle surfaces, preventing aggregation even at reduced particle sizes. This allows the material to maintain both high transparency from small particles and stable dispersion without harmful aggregation.
Solution Approach 2:
The invention changes the surface parameter of particles by coating with amphipathic molecules, which alters the interfacial properties and prevents aggregation. This parameter change enables maintaining small particle sizes for transparency while avoiding the harmful aggregation effect.
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 high light transmittance while maintaining effective heat insulation, improving cooling and heating efficiencies and enabling enhanced product design with improved transparency and insulation.
Implementation Method 1
a plurality of nanoparticles or a plurality of nanofibers surface-coated with an amphipathic molecule or an organic silane molecule
Implementation Method 2
surface-coating a plurality of nanoparticles or a plurality of nanofibers by adding an amphipathic molecule or an organic silane molecule to a dispersion liquid
Implementation Method 3
a cross-linking part that couples the plurality of nanoparticles or the plurality of nanofibers to each other
Implementation Method 4
allowing for formation of an air gap between the plurality of nanoparticles coupled to each other or between the plurality of nanofibers coupled to each other
Data Source
AI summary
A structure according to an embodiment of the present disclosure includes: a plurality of nanoparticles or a plurality of nanofibers surface-coated with an amphipathic molecule or an organic silane molecule; and a cross-linking part that couples the plurality of nanoparticles or the plurality of nanofibers to each other.