Triple Crosslinked Hydrogel for High-Temperature Cooling
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Solution Overview
Problem
Existing hydrogels lack high tensile strength, compression, and durability, with limited cooling periods, making them unsuitable for prolonged use in high-temperature environments.
Innovation Solution
A triple crosslinked cooling hydrogel composition comprising polyvinyl alcohol (PVA), polydimethylsiloxane (PDMS), and phase change materials (PCMs) with specific ratios, along with a crosslinking agent like glutaraldehyde, to create a robust and durable network that maintains cooling efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional hydrogel compositions are used, then the material is simple to manufacture, but the tensile strength and compression resistance are insufficient
Solution Approach 1:
The patent employs a triple network composite structure combining PVA, PDMS, and PCM materials with different crosslinking mechanisms (chemical, physical, and phase-change crosslinks) to achieve high tensile strength and compression resistance while maintaining manufacturability through a systematic multi-step process
2Strength
If conventional hydrogel compositions are used, then the material is simple to manufacture, but the compression resistance and durability are insufficient
Solution Approach 1:
The triple network composite incorporating PDMS provides exceptional compression resistance through its elastic recovery properties, while the integrated crosslinking system ensures durability under repeated compression cycles in harsh environments
3Duration of action of moving object
If conventional hydrogel compositions are used, then the cooling period is limited, but the composition complexity is low
Solution Approach 1:
The patent incorporates phase change materials (PCMs) that undergo phase transitions at specific temperatures, absorbing and releasing latent heat to extend the cooling period significantly compared to conventional hydrogels, with the triple network structure maintaining structural integrity during these phase changes
4Reliability
If the hydrogel is designed for high tensile strength and extended cooling period, then the durability in harsh conditions improves, but the manufacturing complexity increases
Solution Approach 1:
The manufacturing process is segmented into distinct sequential steps (PVA network formation, PDMS incorporation, PCM integration, and crosslinking), allowing each component to be optimized independently while maintaining overall process feasibility and durability performance
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 triple crosslinked hydrogel exhibits enhanced tensile strength, compression, and extended cooling periods, making it suitable for repeated use in harsh conditions, such as high solar radiation and temperature environments.
Implementation Method 1
Phase change materials (PCMs), as an energy storage technology, can store large amounts of energy in the form of latent heat during the phase change process
Implementation Method 2
Phase change materials (PCMs), as an energy storage technology, can store large amounts of energy in the form of latent heat during the phase change process
Implementation Method 3
A triple crosslinked cooling hydrogel composition comprising polyvinyl alcohol (PVA), polydimethylsiloxane (PDMS), and phase change materials (PCMs) with specific ratios, along with a crosslinking agent like glutaraldehyde, to create a robust and durable network
Data Source
AI summary
The invention provides triple crosslinked cooling hydrogel compositions of high tensile strength, high compressibility, high elasticity, and long cooling period and methods of making the compositions. The compositions are useful in clothing and equipment for wear in high solar radiation environments and high temperature environments.