Fluorine-Containing Ether Coating for Friction Durability
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Solution Overview
Problem
There is a demand for surface treatment agents that provide enhanced durability and maintain water repellency or oil repellency even after repeated friction, such as on smartphone displays and other materials, while also ensuring effective fingerprint stain removability.
Innovation Solution
A fluorine-containing ether compound with a perfluoroether chain and hydrolytic silyl group is developed, which forms a surface layer that excels in durability through a specific molecular structure and manufacturing process, including reacting compounds expressed by certain formulas to create a coating liquid for application via dry or wet coating techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fluorine-containing ether compounds with perfluoroether chains are used to provide water and oil repellency, then friction resistance and fingerprint stain removability are improved, but durability of the surface layer decreases
Solution Approach 1:
The patent employs composite materials by combining fluorine-containing ether compounds with silane coupling agents in the surface treatment composition. This creates a hybrid organic-inorganic surface layer where the fluorine compound provides low surface energy (water/oil repellency) while the silane component forms a durable crosslinked network, thus simultaneously achieving friction resistance and long-term durability
Solution Approach 2:
The patent modifies the chemical structure parameters of the fluorine-containing ether compound by introducing specific functional groups (carboxyl, hydroxyl, or amino groups) that can form strong bonds with substrates. This structural parameter change enables the compound to maintain both its low surface energy properties and enhanced adhesion durability on the substrate surface
2Reliability
If fluorine-containing ether compounds are applied to maintain water and oil repellency after repeated friction, then friction resistance is improved, but the surface treatment durability decreases
Solution Approach 1:
The patent applies local quality by creating a surface layer with differentiated functional zones: the outermost layer maintains low surface energy for water/oil repellency, while the inner layer contains crosslinked silane structures that provide mechanical durability and strong substrate adhesion. This spatial differentiation allows each region to perform its specific function optimally
Solution Approach 2:
The patent implements preliminary action by pre-forming a crosslinked silane network structure within the surface treatment composition before application. This pre-established durable framework ensures that when the fluorine-containing ether compound is applied, it adheres to a stable, long-lasting base structure that maintains water and oil repellency even after repeated friction
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 fluorine-containing ether compound forms a surface layer with improved durability, friction resistance, and fingerprint stain removability, maintaining water and oil repellency even under repeated friction, thus addressing the need for long-lasting performance on various materials.
Implementation Method 1
Fluorine-containing ether compounds having a perfluoroether chain and a hydrolytic silyl group can form, on a surface of a substrate, a surface layer that is, for example, highly lubricant, water-repellent, or oil-repellent
Data Source
AI summary
Provided are a fluorine-containing ether compound that can form a surface layer that excels in durability and a method of manufacturing the same, a fluorine-containing ether composition and a coating liquid, and an article having a surface layer that excels in durability and a method of manufacturing the same. A fluorine-containing ether compound is expressed by the following formula (A1) or (A2):{RfO—(Rf1O)m1—(R1)m2—(CHF)m3—O—(CHF)m4}n1-Q1(-T1)n2 Formula (A1)(T2)n3-Q2-(CHF)m5—O—(CHF)m6—(R2)m7—O—(Rf2O)m8—(R3)m9—(CHF)m10—O—(CHF)m11-Q3(-T3)n4 Formula (A2),in the above, the symbols in the formulas are as described in the specification.


