Crosslinked Desiccant Composition for High-Humidity Volume Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing desiccant compositions swell significantly and liquefy under high humidity and temperature fluctuations, leading to reduced absorption capacity and potential leakage in small spaces like electric vehicle headlamps and LED appliances.
Innovation Solution
A desiccant composition comprising 20-65 wt.% of a specific polymer with crosslinking units and 35-80 wt.% of deliquescent components, allowing rapid moisture absorption and release, minimizing swelling and maintaining effectiveness in varying conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional powder desiccant material is used, then moisture absorption capacity is achieved, but significant swelling occurs leading to package expansion and potential leakage
Solution Approach 1:
The patent uses a composite material system consisting of polymer-coated desiccant particles embedded in a porous matrix material. This composite structure allows the desiccant to absorb moisture while the porous matrix provides structural support that prevents swelling, thus maintaining both absorption capacity and volume stability.
Solution Approach 2:
The patent employs a porous matrix material that surrounds and supports the desiccant particles. The porous structure allows moisture vapor to reach the desiccant while the rigid porous framework prevents the desiccant from swelling, thereby maintaining package volume while enabling moisture absorption.
2Productivity
If deliquescent desiccant material is used for rapid moisture absorption, then absorption speed is improved, but liquefaction occurs reducing effectiveness and causing leakage
Solution Approach 1:
The patent modifies the physical and chemical parameters of the desiccant material by coating it with a polymer and embedding it in a porous matrix. This changes the material's behavior so that it maintains solid structure while achieving rapid moisture absorption through the porous pathways, preventing liquefaction while maintaining high productivity.
Solution Approach 2:
The porous matrix acts as an intermediary between the deliquescent desiccant material and the external environment. It allows rapid moisture transport to the desiccant while preventing the material from liquefying, thus maintaining reliability while enabling fast absorption.
3Volume of moving object
If desiccant material is used in small spaces, then space efficiency is improved, but swelling and liquification cause leakage and reduced performance
Solution Approach 1:
The patent creates a composite structure where small desiccant particles are embedded in a rigid porous matrix. This allows the desiccant to be packed densely in small spaces while the matrix prevents swelling and liquification, maintaining both space efficiency and reliability in compact applications like headlamps.
Solution Approach 2:
The porous matrix provides a rigid framework that supports the desiccant particles in compact configurations. The porous structure enables moisture access while the rigid walls prevent swelling, allowing reliable operation in small spaces without leakage or performance degradation.
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 composition absorbs moisture rapidly and can release it when conditions change, maintaining effectiveness in small spaces with minimal swelling and liquefaction, suitable for high humidity and temperature variations.
Implementation Method 1
The polymer has the ability to absorb liquid and/or gas and/or moisture
Implementation Method 2
35-80 wt.% of deliquescent components
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The application relates to a desiccant composition and its use to produce a moisture absorbing product as well as the use of the moisture absorbing product to absorb moisture at high humidity environment conditions.