Polyimide Aerogel Garment Panels for Thermal Insulation
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Solution Overview
Problem
Conventional thermal insulation materials in garments, such as silica-based aerogels, face issues with breathability, flexibility, and dust shedding, leading to poor thermal performance and increased bulk, while prior art garments with limited insulating panels are inflexible and ineffective in extreme temperatures.
Innovation Solution
The use of polyimide aerogel-infused fabric directly bonded to garments, distributed according to the body's heat signature with varying densities and spacing to enhance flexibility, breathability, and thermal insulation, eliminating the need for encapsulation and reducing weight and bulk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional silica-based aerogel is used for thermal insulation, then thermal insulation performance is improved, but breathability deteriorates and dust shedding occurs
Solution Approach 1:
The patent changes the chemical composition parameter of aerogel from conventional silica-based to polyimide-based, which fundamentally alters the material properties. This parameter change eliminates dust shedding while maintaining thermal insulation performance, as polyimide aerogel has a different molecular structure that does not produce harmful particles
Solution Approach 2:
The patent uses polyimide aerogel as a composite material that combines the desired thermal insulation properties with improved breathability and elimination of dust shedding. The polyimide matrix creates a composite structure that maintains aerogel's insulating capabilities while adding functional benefits
2Object-generated harmful factors
If polyurethane encapsulation is used to contain aerogel, then dust release is prevented, but breathability and thermal resistance deteriorate and weight increases
Solution Approach 1:
The patent extracts and eliminates the polyurethane encapsulation layer from the aerogel structure. By using polyimide aerogel that inherently does not shed dust, the harmful function of dust release is prevented without requiring the additional encapsulation layer, thereby simplifying the overall structure
Solution Approach 2:
The polyimide aerogel itself acts as an intermediary material that provides both thermal insulation and dust containment functions. The material's inherent properties serve as a natural barrier, eliminating the need for separate encapsulation structures
3Object-generated harmful factors
If aerogel insulating layers are encapsulated in polyurethane, then dust containment is achieved, but flexibility and thickness increase
Solution Approach 1:
The patent changes the material composition from silica-based aerogel requiring polyurethane encapsulation to polyimide-based aerogel that does not require encapsulation. This parameter change directly improves flexibility by eliminating the rigid polyurethane layer while maintaining dust containment through the aerogel's inherent properties
4Ease of manufacture
If uniform insulating panels are used throughout the garment, then manufacturing is simplified, but thermal performance deteriorates due to lack of strategic placement
Solution Approach 1:
The patent applies local quality by strategically placing polyimide aerogel panels in specific high-heat-loss areas of the body such as the back, shoulders, and chest. This allows optimized thermal performance in critical regions while maintaining manufacturing simplicity through standardized panel placement patterns
5Temperature
If thick insulating slabs are used, then thermal insulation is improved, but bulk and weight increase
Solution Approach 1:
The patent changes the insulation material to polyimide aerogel, which has superior thermal insulation properties per unit thickness compared to conventional materials. This parameter change allows achieving the same thermal insulation performance with significantly reduced thickness and weight
Solution Approach 2:
The use of polyimide aerogel as a composite material provides high thermal insulation efficiency with minimal thickness. The aerogel's unique porous structure delivers superior insulation properties, reducing the need for thick insulating layers and thereby decreasing overall garment weight and bulk
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 provides a lightweight, flexible, and breathable garment with improved thermal insulation, capable of maintaining body heat in extreme temperatures without dust shedding, by using polyimide aerogel-infused fabric strategically placed and bonded to the garment, offering enhanced durability and ventilation.
Implementation Method 1
Aerogel is the lowest thermal conductive solid in existence; meaning heat transfer through the aerogel is very limited
Data Source
AI summary
An apparel garment includes a polyimide aerogel or aerogel-infused insulator 12 directly bonded to at least a portion 10 of the garment. A method for bonding an aerogel to an insulator 12 for an apparel garment includes providing a polyimide aerogel component, which may be a powder or other form, and directly bonding the polyimide aerogel component to the apparel garment. The bonding may be through at least one of thermal, chemical (adhesive/solvent), hydrogen, and mechanical bonding.