Sealed Fluidic Component Using Dual PAEK Materials for High Pressure
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High performance liquid chromatography (HPLC) systems face challenges in achieving reliable sealing of fluidic components under high pressure conditions while ensuring biocompatibility, as existing solutions often fail to provide effective and long-lasting seals that maintain component alignment and positioning.
Innovation Solution
A composite material comprising two different polyaryletherketone (PAEK) materials with distinct melting points is used, where the material with a lower melting point is heated to provide a fluid-tight seal while the higher melting point material maintains its shape and alignment, ensuring biocompatibility and mechanical stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single material is used for sealing in high pressure HPLC applications, then the sealing process is simple, but the seal cannot maintain alignment and positioning under high pressure conditions
Solution Approach 1:
The sealing component is divided into two distinct material zones: a first material providing sealing functionality and a second material providing structural support and alignment. This segmentation allows each material to be optimized for its specific function, resolving the contradiction between sealing reliability and maintaining alignment under high pressure.
Solution Approach 2:
The invention uses a composite structure comprising two different materials with complementary properties. The first material (e.g., PEEK) provides excellent sealing characteristics and biocompatibility, while the second material (e.g., PEKK or PEI) provides higher mechanical strength and dimensional stability. This composite approach enables the seal to maintain alignment and positioning under high pressure while ensuring reliable sealing.
2Shape
If a material with high melting point is used to maintain shape under high pressure, then alignment and positioning are maintained, but the material cannot provide effective sealing
Solution Approach 1:
Different regions of the sealing component have different material properties tailored to local functional requirements. The first material zone is optimized for sealing (lower melting point, higher flexibility), while the second material zone is optimized for shape stability (higher melting point, higher rigidity). This local differentiation resolves the contradiction between shape stability and sealing effectiveness.
Solution Approach 2:
The composite structure combines materials with different melting points and mechanical properties. The first material (lower melting point) can deform to create effective seals, while the second material (higher melting point) maintains the overall shape and alignment. This composite approach allows both sealing effectiveness and shape stability to be achieved simultaneously.
3Reliability
If sealing material is heated to provide fluid-tight seal, then sealing effectiveness is improved, but the material may lose its shape and alignment
Solution Approach 1:
When the sealing component is heated, only the first material zone reaches its melting point and becomes pliable for sealing, while the second material zone remains below its melting point and maintains shape stability. This local thermal response resolves the contradiction between sealing effectiveness and shape stability during the sealing process.
Solution Approach 2:
The composite structure with different melting point materials enables differential thermal response. The first material (lower melting point) softens at sealing temperature to provide fluid-tight sealing, while the second material (higher melting point) remains rigid to maintain alignment and positioning. This composite design allows effective sealing without losing shape and alignment.
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 solution achieves reliable and long-lasting sealing of fluidic components in HPLC systems, maintaining alignment and positioning under high pressure conditions, and ensures biocompatibility by utilizing PAEK materials with high adhesion properties and thermal stability.
Implementation Method 1
The composite material is heated in order to provide a sealing by the first material
Implementation Method 2
the first material having a lower melting point than the second material... the first material, with the lower melting point, provides a sealing
Implementation Method 3
utilizing PAEK materials with high adhesion properties
Data Source
AI summary
A sealed fluidic component for use in a fluidic flow path is made by providing a composite material comprising a first material and a second material, wherein the first material and the second material are different PAEK materials with the first material having a lower melting point than the second material. The composite material is heated to provide a sealing by the first material.