PPS-POSS Support Element for Pleated Filter Deformation
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Solution Overview
Problem
Conventional support elements for filters, particularly pleated filter elements, suffer from reduced dirt capacity and deformation under differential pressure, limiting their performance and requiring additional support structures for effective drainage and sterilization.
Innovation Solution
A support element comprising a polyphenylene sulfide (PPS) resin with polyhedral oligomeric silsesquioxane (POSS) additives, which enhances crystallization rate and crystallinity, providing a stiffer and more resistant structure suitable for pleated filters, improving dirt capacity and sterilization compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mesh or screen is used to support the filter element, then drainage is improved and support is provided, but the dirt capacity is reduced due to pleat collapse under differential pressure
Solution Approach 1:
The support element uses a composite material consisting of polyphenylene sulfide (PPS) resin combined with polyhedral oligomeric silsesquioxane (POSS) additives. This composite structure provides enhanced mechanical strength and stiffness to prevent pleat collapse while maintaining drainage performance, thereby preserving dirt capacity that would otherwise be lost with conventional mesh or screen supports
2Area of stationary object
If the filter element is pleated to increase area in a given volume, then filtration area is increased, but dirt capacity is reduced due to pleat collapse under differential pressure
Solution Approach 1:
The support element employs a composite material of PPS resin with POSS additives that provides superior mechanical properties. This allows the pleated filter element to maintain its expanded filtration area without collapse, preserving both the increased surface area for filtration and the dirt capacity that would be compromised by conventional support structures
3Strength
If conventional support elements are used, then support function is provided, but deformation occurs under differential pressure requiring additional support structures
Solution Approach 1:
The support element utilizes a composite material combining PPS resin with POSS additives, where the POSS particles act as reinforcing agents within the polymer matrix. This composite structure delivers enhanced strength and dimensional stability under differential pressure, providing adequate support function without the deformation that would necessitate additional support structures
Solution Approach 2:
The invention changes the material parameters of the support element by incorporating POSS additives into the PPS resin system. This modification alters the mechanical properties, specifically increasing stiffness and strength, thereby improving deformation resistance while maintaining the essential support function
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 PPS-POSS composition results in a support element that is more resistant to deformation, enhances filter dirt capacity, and is suitable for sterilization, offering higher performance with a smaller envelope size compared to conventional elements.
Implementation Method 1
a support element comprising a netting comprising a composition comprising a polyphenylene sulfide (PPS) resin, and at least one polyhedral oligimeric silsequioxane (POSS) additive
Data Source
AI summary
A support element, comprising a netting comprising a composition comprising a polyphenylene sulfide resin and at least one polyhedral oligimeric silsequioxane additive, is provided.