Fluorinated Polymer Coatings with Phosphonic Moieties
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current low energy fluoropolymer coatings for metallic substrates are expensive, less robust, and do not provide adequate corrosion protection and abrasion resistance.
Innovation Solution
Development of polymers derived from at least 95 wt.% of a fluorinated monomer and at least 1 wt.% of a monomer comprising a phosphonic moiety, combined with acrylic acid, which are applied as a coating to create a robust, low energy surface with enhanced corrosion protection and abrasion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional low energy fluoropolymer coatings are used on metallic substrates, then the coating cost is high and the coating is less robust, but the patent seeks to achieve improved corrosion protection and abrasion resistance
Solution Approach 1:
The patent employs composite polymer coatings that integrate fluorinated monomers (providing low surface energy and corrosion resistance) with phosphonic acid-containing monomers (providing strong metal substrate bonding). This composite approach combines the advantages of different material systems to achieve both robust corrosion protection and cost-effective manufacturing through simplified application processes
Solution Approach 2:
The patent modifies the chemical composition parameters of fluoropolymer coatings by incorporating phosphonic acid groups (typically 1-20 wt% of total polymer content). This parameter change transforms the coating from a simple fluoropolymer into a functional composite that exhibits enhanced metal adhesion, corrosion resistance, and abrasion resistance while maintaining low surface energy properties
2Object-affected harmful factors
If fluoropolymer coatings are applied to metallic substrates, then corrosion protection is provided, but the coating exhibits high peel force and reduced abrasion resistance
Solution Approach 1:
The patent applies local quality differentiation within the coating system: phosphonic acid-containing monomers are positioned at the coating-substrate interface to provide strong chemical bonding and high peel resistance, while fluorinated monomers form the outer coating layer to provide corrosion protection and low surface energy. This spatial differentiation of functional properties resolves the contradiction between adhesion strength and corrosion resistance
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 resulting polymer coatings provide improved corrosion protection, abrasion resistance, and low peel force, making them suitable for various applications including appliances and automotive manufacturing, while being simpler and less expensive to apply.
Implementation Method 1
a polymer is described wherein the polymer is derived from (a) at least 95 wt.-% of a fluorinated monomer... (b) at least 1 wt.-% of a monomer comprising a phosphonic moiety
Implementation Method 2
provide corrosion protection to metals
Implementation Method 3
Fluoropolymer compositions can be applied to metallic substrates to create a low energy surface that is robust
Implementation Method 4
The resulting polymer coatings provide improved corrosion protection, abrasion resistance, and low peel force
Data Source
AI summary
Described herein is a polymer derived from (a) a fluorinated monomer selected from (i) CnF(2n+1)(CH2)zOC(=O)CR=CH2 wherein n is an integer selected from 1 to 8, z is an integer selected from 1 to 20, and R is H or CH3; and (ii) CnF(2n+1)SO2(NR')(CH2)zOC(=O)CR=CH2 wherein n is an integer selected from 1 to 8; z is an integer selected from 2 to 20, and R is H or CH3 and R' is H or C1 -C8 alkyl group; and (b) a monomer comprising a phosphonic moiety, along methods thereof and articles comprising such polymer.