Fluorinated Aromatic Crosslinking Agent for Steam-Resistant Fluoroelastomers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current seal materials formed from crosslinked fluoroelastomers exhibit poor heat resistance and vapor resistance, particularly when exposed to high-temperature water vapor, necessitating the development of a more effective crosslinking agent to enhance these properties.
Innovation Solution
A novel fluorine-containing aromatic compound is used as a crosslinking agent, specifically designed to improve the heat resistance and vapor resistance of crosslinked fluoroelastomers, with specific chemical structures and formulations that enhance the material's performance when exposed to high-temperature water vapor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a crosslinked fluoroelastomer is used as a seal material, then heat resistance is improved, but vapor resistance deteriorates
Solution Approach 1:
The patent changes the chemical structure parameters of the crosslinking agent by introducing fluorine-containing aromatic groups with specific molecular configurations (formula 1 where m=2-6, l=0-2). This structural modification enables the crosslinked fluoroelastomer to maintain both heat resistance and vapor resistance by altering the crosslinking density and network configuration, thereby resolving the contradiction between heat resistance and vapor resistance.
2Power
If the temperature of water vapor is increased to improve power generation efficiency, then power generation efficiency is improved, but the performance of seal materials deteriorates
Solution Approach 1:
The patent creates a composite crosslinking system by combining fluorine-containing aromatic compounds with specific molecular structures (formula 1) as crosslinking agents. This composite approach integrates the benefits of fluorine-containing groups (vapor resistance) with aromatic structures (heat resistance), enabling seal materials to withstand high-temperature water vapor environments required for improved power generation efficiency.
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 crosslinked fluoroelastomer exhibits a weight swelling change ratio of 70% or less when exposed to saturated water vapor at 300°C for 22 hours, demonstrating improved heat and vapor resistance compared to traditional materials.
Implementation Method 1
A crosslinking agent includes a compound represented by formula (1)... a crosslinked fluoroelastomer... obtained by crosslinking the composition
Data Source
AI summary
A crosslinking agent includes a compound represented by the following formula (1). In the formula (1), R1, R2, and R3 are independently a fluorine atom, an alkyl group, a fluoroalkyl group, or a substituted or unsubstituted aryl group, a plurality of R1 are identical or different, a plurality of R2 are identical or different, a plurality of R3 are identical or different, provided that at least one of R1, R2, and R3 is a fluorine atom or a fluorine atom-containing group, m is an integer of from 2 to 6, l is an integer of from 0 to 2, and each hydrogen on the benzene ring(s) is optionally substituted with a substituent.