Silane Compound with Perfluoropolyether for Touch Panel Durability
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Solution Overview
Problem
Conventional perfluoropolyether group containing silane compounds fail to provide sufficient surface slip property and friction durability for touch panels, despite offering water-repellency and oil-repellency.
Innovation Solution
A perfluoro(poly)ether group containing silane compound with a specific molecular structure, where at least one Si atom is bonded to a perfluoro(poly)ether group via a linker and another Si atom with a hydrolyzable group, forming a surface-treating layer with enhanced surface slip property and friction durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional perfluoropolyether group containing silane compound is used, then water-repellency and oil-repellency are provided, but surface slip property and friction durability are insufficient
Solution Approach 1:
The silane compound is divided into distinct functional segments: a perfluoropolyether group providing water and oil repellency, a linker group connecting the fluorine-containing moiety, and multiple Si atoms with hydrolyzable groups for surface bonding. This segmentation allows each part to perform its specific function optimally while achieving the overall goal of improved surface slip property and friction durability
Solution Approach 2:
The invention creates a composite molecular structure combining fluorine-containing perfluoropolyether groups with silane moieties containing hydrolyzable groups. This composite structure integrates the low surface energy characteristics of fluorinated compounds with the surface bonding capabilities of silanes, resulting in a material that simultaneously provides water-repellency, oil-repellency, and enhanced friction durability
2Duration of action of stationary object
If surface-treating layer is formed for long-term durability, then friction durability improves, but surface slip property decreases
Solution Approach 1:
The silane compound structure incorporates multiple Si atoms with different local functions: some Si atoms are equipped with hydrolyzable groups for strong surface bonding and durability, while other Si atoms are connected to the perfluoropolyether groups that provide low surface energy and slip properties. This local differentiation of functional qualities within the same molecular structure allows simultaneous achievement of friction durability and surface slip
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 novel silane compound forms a surface-treating layer that exhibits excellent water-repellency, oil-repellency, antifouling properties, along with improved surface slip and friction durability, suitable for long-term use in touch panels.
Implementation Method 1
a Si atom having a hydrolyzable group is bonded to the at least one Si atom via another linker
Data Source
AI summary
A perfluoro(poly)ether group containing silane compound of the formula (1):(Rf-PFPE)α-X—(SiQkY3-k)β (1)wherein Rf, PFPE, X, Y, Q, k, α and β are as defined herein, and which is able to from a layer having water-repellency, oil-repellency and antifouling property as well as high surface slip property and high friction durability.