Composite Tungsten Oxide Insulation Nanoparticles for IR Blocking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current thermal insulation media have single inorganic or organic structures that lack the combined advantages of both, leading to suboptimal energy efficiency and stability, and there is a need for a composite thermal insulation medium with improved properties.
Innovation Solution
An organic-inorganic composite thermal insulation medium is developed, comprising nanoparticles with a structure of (Mx-Rn)WOy, where M represents a doped metal element, R represents an organic complex group, and the medium is prepared through a multi-step process involving dispersion, reaction, and crosslinking heat treatment to achieve a tightly-connected structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If single inorganic or organic structure thermal insulation media are used, then the preparation process is simple, but the thermal insulation performance and stability are suboptimal
Solution Approach 1:
The patent applies composite materials by combining inorganic tungsten oxide nanoparticles with organic dyes to create a hybrid thermal insulation medium. The inorganic component provides thermal insulation properties while the organic component enhances infrared absorption, achieving superior thermal insulation performance compared to single-structure materials.
Solution Approach 2:
The patent merges inorganic and organic materials into a unified nanoparticle structure. The inorganic tungsten oxide core is coated with organic dye molecules, creating a composite nanoparticle that integrates the advantages of both material types to achieve enhanced thermal insulation and infrared absorption characteristics.
2Reliability
If composite structure thermal insulation media are developed, then thermal insulation performance is improved, but the preparation process becomes complex
Solution Approach 1:
The patent segments the preparation process into distinct sequential steps: (1) synthesizing inorganic tungsten oxide nanoparticles, (2) dispersing them in solvent, (3) adding organic dye, (4) ultrasonic treatment, and (5) aging. This segmentation makes the complex composite formation process more manageable and reproducible.
Solution Approach 2:
The patent performs preliminary actions by first synthesizing and characterizing the inorganic tungsten oxide nanoparticles before incorporating the organic dye component. This preliminary preparation ensures the inorganic framework is ready and stable before the final composite structure is formed, simplifying the overall process control.
3Reliability
If nanoscale structure is used, then thermal insulation performance and transparency are enhanced, but manufacturing precision requirements increase
Solution Approach 1:
The patent controls nanoparticle size by adjusting key parameters including tungsten oxide precursor concentration, pH value (controlled by acetic acid addition), and aging time. By optimizing these parameters, the patent achieves consistent nanoscale particle sizes that provide both thermal insulation performance and transparency while managing manufacturing precision 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 composite medium exhibits strong infrared absorption, high thermal insulation performance, weather resistance, and transparency due to its nanoscale structure, enhancing energy efficiency and product stability.
Implementation Method 1
the thermal insulation media could absorb infrared light and ultraviolet light, convert them into heat or reflection
Implementation Method 2
transfer heat to the air in the forms of heat conduction and heat convection
Implementation Method 3
transfer heat to the air in the forms of heat conduction and heat convection
Implementation Method 4
the thermal insulation media could absorb or reflect infrared light back indoors
Implementation Method 5
about half of the heat is returned to the indoor air in the form of heat convection
Implementation Method 6
the composite thermal insulation medium is subjected to a crosslinking heat treatment to obtain organic-organic and organic-inorganic tightly-connected structures
Implementation Method 7
the nanoscale of the thermal insulation medium could further enhance an absorption activity of the composite thermal insulation medium
Data Source
AI summary
Disclosed is an organic-inorganic composite thermal insulation medium, which is a nanoparticle having a structure of (Mx-Rn)WOy, where M represents a doped metal element, R represents an organic complex group, 0.3≤x≤0.7, 2<y<4, n represents a polymerization degree of the organic complex group, and n≥10; M is selected from the group consisting of an alkali metal, an alkaline earth metal, a transition metal, and a rare earth metal; and R is selected from the group consisting of pyrrole and a derivative thereof, aniline and a derivative thereof, and thiophene and a derivative thereof. In addition, also disclosed is a method for preparing the thermal insulation medium.