Super Absorbent Polymer Sheet with Open Pore Channels
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Solution Overview
Problem
Existing super absorbent polymers are challenging to use in pulpless absorbers due to their limited flexibility and high manufacturing costs, which are exacerbated by the need for fluff pulp and the powdery form of the polymers.
Innovation Solution
A method for preparing a super absorbent polymer sheet with high flexibility and fast absorption rate, involving a monomer composition with an acrylic acid-based monomer, polyethylene glycol (methyl ether) (meth)acrylate, a polyol as an internal cross-linking agent, an encapsulated blowing agent, and a polymerization initiator, which is then thermally or photopolymerized and dried to form a sheet with an open pore channel structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If fluff pulp is used to maintain absorber shape and fasten super absorbent polymer particles, then the absorber maintains structural integrity, but the product becomes thick and reduces wearability
Solution Approach 1:
The invention extracts and removes the fluff pulp component from the absorber structure, replacing it with a self-supporting super absorbent polymer sheet that maintains structural integrity without requiring additional fastening materials, thereby reducing product thickness
Solution Approach 2:
The super absorbent polymer sheet is designed to perform multiple functions simultaneously: it provides structural support, maintains absorber shape, and delivers absorption functionality, eliminating the need for separate fluff pulp components
2Stability of the object's composition
If fluff pulp is used to fasten super absorbent polymer particles, then particle stability is improved, but manufacturing costs increase due to additional material requirements
Solution Approach 1:
The invention merges the fastening function and absorption function into a single integrated super absorbent polymer sheet structure, eliminating the need for separate fluff pulp materials and reducing total material quantity while maintaining particle stability
Solution Approach 2:
The super absorbent polymer sheet serves multiple purposes: it provides structural framework, fastens polymer particles, and performs absorption, replacing multiple separate components with a single multi-functional material
3Quantity of substance
If super absorbent polymer is used in powdery form, then it achieves high absorption capacity, but it scatters and leaks during manufacturing and use
Solution Approach 1:
The invention encapsulates the powdery super absorbent polymer within a flexible sheet structure, containing the particles to prevent scattering and leakage during manufacturing and use while preserving the high absorption capacity of the powder form
Solution Approach 2:
The invention creates a composite structure combining the super absorbent polymer particles with a sheet matrix material, forming an integrated composite that prevents particle dispersion while maintaining absorption functionality
4Quantity of substance
If conventional super absorbent polymers are used without fluff pulp, then manufacturing costs are reduced, but flexibility and absorption rate deteriorate
Solution Approach 1:
The invention changes the structural parameters of the super absorbent polymer by forming it into a sheet configuration with specific porosity and thickness characteristics, improving flexibility and absorption rate while maintaining cost-effectiveness through eliminated fluff pulp usage
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 resulting super absorbent polymer sheet exhibits improved absorption rate and permeability, enabling its use as a pulpless absorber with enhanced flexibility and reduced manufacturing costs.
Implementation Method 1
preparing a hydrogel polymer by thermal polymerization or photopolymerization of the monomer composition
Implementation Method 2
preparing a hydrogel polymer by thermal polymerization or photopolymerization of the monomer composition
Implementation Method 3
an encapsulated blowing agent
Implementation Method 4
absorption of water by capillary pressure is possible
Data Source
AI summary
The present disclosure relates to a preparing method of a super absorbent polymer sheet and a super absorbent polymer sheet prepared therefrom. The preparing method of a super absorbent polymer sheet of the present disclosure may prepare a porous flexible super absorbent polymer sheet exhibiting high flexibility and fast absorption rate.