Aerogel-Cellulose Composite Sheet for Flexible Heat Insulation
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Solution Overview
Problem
Existing composite materials for heat insulation do not achieve a high enough filling rate of aerogel particles while maintaining structural flexibility.
Innovation Solution
A composite material is developed with a high volume percentage (95 vol % or more) of aerogel particles combined with a cellulose-based resin, which allows for excellent heat insulation and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the filling rate of aerogel particles is increased to improve heat insulation properties, then heat insulation performance is improved, but structural flexibility deteriorates
Solution Approach 1:
The patent uses a composite material system consisting of aerogel particles (90-99 vol%) combined with a binder resin and optionally a fibrous material. This composite structure allows the aerogel particles to provide excellent heat insulation while the binder resin and fibrous material maintain structural flexibility and coherence, resolving the contradiction between high filling rate and flexibility
Solution Approach 2:
The patent utilizes the inherent porous structure of aerogel particles to achieve superior heat insulation properties. The porous network within the aerogel particles provides thermal insulation while the overall composite structure maintains flexibility through the binder resin matrix that holds the particles together without rigidifying the structure
2Reliability
If the filling rate of aerogel particles is increased to achieve high heat insulation, then heat insulation performance is improved, but processability and formation of flexible structural bodies deteriorate
Solution Approach 1:
The binder resin acts as an intermediary material that facilitates the formation of flexible structural bodies from high-filling-rate aerogel particles. The binder resin coats and binds the aerogel particles together, enabling the composite material to be formed into various flexible shapes while maintaining the high aerogel content necessary for superior heat insulation
Solution Approach 2:
The patent optimizes the binder resin content within a specific range (1-10 vol%, preferably 2-5 vol%) to achieve the right balance between heat insulation performance and processability. This parameter control allows the composite material to be sufficiently flexible for manufacturing while maintaining high aerogel filling rate for excellent thermal insulation
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 material achieves superior heat insulation properties and flexibility, making it suitable for various applications such as heat insulators and flexible structural components.
Implementation Method 1
Aerogel has been known as a material excellent in heat insulation properties
Implementation Method 2
a composite material containing aerogel particles and at least one cellulose-based resin selected from the group consisting of cellulose and a cellulose derivative
Data Source
AI summary
A composite material containing aerogel particles and at least one cellulose-based resin selected from the group consisting of cellulose and a cellulose derivative, in which a content of the aerogel particles is 95 vol % or more. A sheet containing the composite material, and a heat insulator containing the composite material.