Moisture Absorbing Polymeric Formulations with Zeolite Desiccant
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Solution Overview
Problem
Existing moisture-sensitive product containers face challenges in maintaining a moisture-free environment due to the limitations of traditional desiccant containment methods, which often lead to reduced absorption efficiency and potential contamination or damage.
Innovation Solution
A moisture-absorbing polymeric product is created by blending a non-elastomeric thermoplastic material, such as polystyrene, with a water-absorbing agent comprising zeolites and alkaline earth metal oxides, which expands upon moisture absorption to enhance diffusion and absorption capacity without using wicking fibers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If desiccants are contained in separate compartments or packets, then product contamination is prevented, but moisture absorption efficiency is reduced
Solution Approach 1:
The patent combines the desiccant material directly with the polymer matrix to form an integrated moisture-absorbing container wall. This merging eliminates the need for separate compartments or packets, allowing the desiccant to be in direct contact with moisture while remaining contained within the polymer structure, thus simultaneously achieving product protection and high absorption rate.
Solution Approach 2:
The patent creates a composite material system where desiccant particles are embedded within a polymer matrix. This composite structure allows the desiccant to maintain its moisture-absorbing functionality while being mechanically supported and contained within the polymer, preventing contamination while maximizing absorption efficiency through direct contact with moisture.
2Reliability
If desiccants are entrained within the polymer matrix, then containment is achieved, but moisture contact is reduced
Solution Approach 1:
The patent utilizes the porous structure of the polymer matrix to embed desiccant particles while maintaining open pathways for moisture contact. The porous nature of the material allows moisture to penetrate through to the desiccant particles, ensuring that containment is achieved without sacrificing absorption efficiency, as the desiccant remains accessible to moisture through the porous network.
3Reliability
If traditional desiccant containers are used, then initial containment is achieved, but dust release and contamination occur
Solution Approach 1:
By merging the desiccant with the polymer matrix, the patent eliminates the interface between the desiccant and the container interior. The desiccant is embedded within the polymer structure rather than being contained in a separate vessel, which prevents dust release into the container while maintaining containment functionality through the integrated polymer-desiccant structure.
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
This approach increases the accessibility and effectiveness of the desiccant within the polymer matrix, enhancing moisture absorption and maintaining mechanical stability, thereby effectively reducing moisture levels in containers and ensuring the integrity of sensitive products.
Implementation Method 1
a water-absorbing agent which comprises a combination of at least one zeolite and at least one alkaline earth metal oxide
Implementation Method 2
said agent having at least two components of which at least one is swellable when brought into contact with water
Implementation Method 3
enhancing the diffusion through the polymeric matrix of the polymeric product
Data Source
AI summary
Provided is a moisture absorbing polymeric product comprising a blend of a preferably non-elastomeric polymeric material and a water absorbing agent, said agent having at least two components of which at least one is swellable when brought into contact with water. The invention relates furthermore to the use of said product for bottling, storing or preparing at least one moisture-sensitive material, a method for enhancing the diffusion of / increasing the permeability for polar liquids, liquid vapours and/or gases through / of a polymeric material, and a method for producing said polymeric product.