Perfluoroelastomer Composition with Fluorosilane for Tack-Free Sealing
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Solution Overview
Problem
Conventional methods for creating tack-free perfluoroelastomers require additional processing steps, such as surface treatment or coating, which complicate the manufacturing process and increase costs, while also risking degradation of the elastomeric properties.
Innovation Solution
A perfluoroelastomer composition incorporating a small amount of fluorosilane compound, specifically a perfluoropolyether or fluorodisilane, is used to prevent firm fixation to substrates without compromising the elastomeric properties, eliminating the need for additional processing steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If conventional surface treatment methods are used to create tack-free perfluoroelastomer, then the perfluoroelastomer can prevent firm fixation to substrate, but additional processing steps are required which complicates manufacturing
Solution Approach 1:
The fluorosilane compound is incorporated into the perfluoroelastomer composition during the initial compounding stage, before molding. This preliminary incorporation ensures that the tack-free property is built into the material itself, eliminating the need for subsequent surface treatment steps after molding.
Solution Approach 2:
The fluorosilane compound provides self-service by automatically migrating to the surface of the perfluoroelastomer during molding and curing, where it forms a low-surface-energy layer that prevents adhesion. This self-organizing behavior occurs without external intervention or additional processing steps.
2Object-generated harmful factors
If surface treatment agent is coated and heated to polymerize, then tack-free surface is achieved, but additional coating and heating steps are required
Solution Approach 1:
The invention merges the tack-free surface functionality with the base perfluoroelastomer material by incorporating the fluorosilane compound during compounding. This consolidation allows the material to be molded and cured in a single operation, combining what were previously separate steps (material preparation, surface treatment, and curing) into one integrated process.
Solution Approach 2:
The fluorosilane compound is prepared and incorporated into the elastomer matrix in advance, during the compounding stage. This preliminary action ensures that the surface-active component is uniformly distributed throughout the material before molding, eliminating the need for separate coating and heating steps that were previously required.
3Temperature
If perfluoroelastomer is used for high temperature applications, then heat resistance is improved, but the perfluoroelastomer may stick to equipment substrate
Solution Approach 1:
The invention applies local quality by concentrating the fluorosilane compound at the surface of the perfluoroelastomer through its inherent surface-active properties. This creates a localized low-surface-energy layer at the interface with the substrate, which prevents adhesion, while the bulk perfluoroelastomer maintains its high-temperature resistance and elastomeric properties.
Solution Approach 2:
The invention creates a composite material system where the perfluoroelastomer matrix provides heat resistance and mechanical properties, while the incorporated fluorosilane compound provides surface-level anti-adhesion functionality. This composite approach allows both high temperature resistance and non-stick properties to coexist without compromising either 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 composition achieves a tack-free perfluoroelastomer with maintained elastomeric properties, suitable for use in semiconductor equipment, without requiring special processing steps, thus simplifying and cost-effectively producing a sealing material with improved adherence prevention.
Implementation Method 1
the firm fixation of the fluoroelastomer to a substrate (for example, metal) can be prevented
Data Source
AI summary
To provide an elastomer composition that can be easily prevented from being blocking to a substrate. A perfluoroelastomer composition comprising (A) a perfluoroelastomer and (B) a fluorosilane compound.