Water and Oil Repellent Substrate with Undercoat Layer
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Solution Overview
Problem
The existing water and oil repellent layers formed using silane compounds with perfluoro(poly)ether groups lack sufficient abrasion resistance, which is a critical performance requirement for modern applications.
Innovation Solution
A substrate with a water and oil repellent layer is developed, featuring an undercoat layer containing silicon and specific elements from Group 1, 2, 4, 5, or 13 of the periodic table, topped with a hydrolytic condensation product of fluorinated ether compounds represented by specific formulas, enhancing abrasion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a water and oil repellent layer is formed using a silane compound containing a perfluoro(poly)ether group, then water and oil repellency is achieved, but abrasion resistance is insufficient
Solution Approach 1:
The invention uses a composite structure consisting of an undercoat layer containing silicon oxide and specific metal oxides (Groups 1, 2, 4, 5, 13, or 15 elements) combined with a water and oil repellent layer made from fluorinated ether compounds. This composite material approach allows the undercoat layer to provide mechanical strength and abrasion resistance while the fluorinated layer provides water and oil repellency, thus resolving the contradiction between these two properties.
2Reliability
If performance requirements for water and oil repellent layers are increased, then superior water and oil repellency is achieved, but abrasion resistance becomes insufficient
Solution Approach 1:
The invention divides the water and oil repellent coating system into two separate functional layers: an undercoat layer responsible for providing mechanical strength and abrasion resistance through silicon oxide and metal oxide composition, and an outer water and oil repellent layer that provides the repellency function through fluorinated ether compounds. This segmentation allows each layer to be optimized for its specific function without compromising the other.
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 a substrate with superior abrasion resistance and water and oil repellency, meeting the elevated performance requirements for modern applications.
Implementation Method 1
a water and oil repellent layer made of a hydrolytic condensation product of a fluorinated ether compound
Data Source
AI summary
A substrate with a water and oil repellent layer having excellent abrasion resistance and a method for producing the substrate are provided. The substrate with a water and oil repellent layer contains a substrate, an undercoat layer formed on the surface of the substrate, and a water and oil repellent layer formed on the surface of the undercoat layer. The undercoat layer contains an oxide containing silicon and a specific element. The water and oil repellent layer is made of a hydrolytic condensation compound of a fluorinated ether compound, which is a compound represented by the formula (A1) or a compound represented by the formula (A2):Rf—O—(Rf1O)m—Rf2[—R1—C(—R2-T)a(—R3)3-a]b (A1)[(T-R2—)a(R3—)3-aC—R1—]bRf2—O—(Rf1O)m—Rf2[—R1—C(—R2-T)a(—R3)3-a]b (A2).