Fluoroelastomer-Polyamide Composite Bonding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fluoroelastomer-polyamide composite materials require metal components for rigidity, increasing weight and cost, particularly in transportation, and existing bonding methods lack durability and heat stability.
Innovation Solution
A composite material is formed using a peroxide-cured fluoroelastomer with a low temperature retraction (TR-10) and a polyamide resin with high heat deflection temperature (HDT), creating a direct, heat-stable bond without adhesives or additives, allowing for increased use of reinforcing materials and reduced polyamide content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metal parts are used to provide rigidity in fluoroelastomer composites, then mechanical strength and rigidity are improved, but weight increases
Solution Approach 1:
The patent changes the material parameters by using polyamide resins with specifically high heat deflection temperature (HDT ≥ 130°C) to achieve the required rigidity and mechanical strength properties that previously required metal components, thereby reducing weight while maintaining structural performance
Solution Approach 2:
The patent creates a composite material system combining fluoroelastomer with high-HDT polyamide resin, where the polyamide provides the rigid structural support previously requiring metal, achieving weight reduction while maintaining mechanical strength through material composition optimization
2Strength
If adhesives or bonding additives are used to bond fluoroelastomer to polyamide, then bond strength is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent extracts and eliminates the need for separate adhesives or bonding additives from the composite material system. The fluoroelastomer itself is formulated with inherent bonding capability to the polyamide resin, removing the intermediate bonding layer and simplifying the manufacturing process while maintaining strong adhesion
3Strength
If conventional fluoroelastomers are used to bond with polyamide, then bonding is achieved, but heat stability and durability of the bond deteriorate
Solution Approach 1:
The patent changes the critical parameter of temperature retraction (TR-10) by selecting fluoroelastomers with TR-10 of -19°C or lower. This parameter change ensures the fluoroelastomer maintains dimensional stability and bonding strength at elevated temperatures, achieving heat stability and durability required for high-temperature applications
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 provides strong, heat-resistant bonds that reduce material costs and weight, enabling the composite material to withstand high mechanical and thermal loads, making it suitable for applications where metal replacement is desirable.
Implementation Method 1
a peroxide curing agent and/or a peroxide curable fluoroelastomer
Implementation Method 2
strong direct bonds between fluoropolymers and polyamides can be formed
Data Source
AI summary
A composite material comprising a first component directly bonded to a second component, the first component comprising a peroxide cured fluoroelastomer having a temperature reflection TR-10 of -19C or lower as measured according to ASTM D 1329 and the second component comprising a polyamide resin, and methods of making such composite materials and shaped articles containing the composite materials.