Water-Oil Repellent Substrate with Boron-Phosphorus Undercoat
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Solution Overview
Problem
Existing water/oil repellent layers lack sufficient abrasion resistance, necessitating the development of a substrate with enhanced properties.
Innovation Solution
A water/oil repellent layer-provided substrate is created using an undercoat layer containing silicon, boron, and phosphorus, with a specific molar concentration ratio, and a fluorinated compound with a reactive silyl group to improve adhesion and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional silicon oxide undercoat layer is used, then the substrate has basic adhesion, but the water/oil repellent layer has insufficient abrasion resistance
Solution Approach 1:
The invention changes the compositional parameters of the undercoat layer by incorporating specific ratios of silicon, boron, and phosphorus oxides. The boron content is controlled at 0.01-10 at% and phosphorus content at 0.01-10 at%, with their combined total not exceeding 20 at%. This parameter optimization enhances the undercoat layer's ability to bond with the water/oil repellent layer, significantly improving abrasion resistance while maintaining manageable complexity.
Solution Approach 2:
The invention creates a composite undercoat layer material combining silicon oxide with boron oxide and phosphorus oxide. This composite structure leverages the synergistic effects of different oxides: silicon oxide provides the base matrix, boron oxide enhances chemical bonding capability, and phosphorus oxide further strengthens adhesion. The resulting composite undercoat layer achieves superior abrasion resistance compared to conventional pure silicon oxide layers.
2Strength
If the undercoat layer composition is optimized with boron and phosphorus, then abrasion resistance improves, but the manufacturing precision requirements increase
Solution Approach 1:
The invention applies partial action by setting practical concentration ranges rather than exact values. The boron content is specified as 0.01-10 at% and phosphorus as 0.01-10 at%, with the understanding that achieving the lower end of these ranges (particularly 0.01-1 at%) provides sufficient performance improvement. This approach allows manufacturers to achieve good abrasion resistance without requiring extremely precise control over the entire possible range, thus balancing performance gains with manufacturing feasibility.
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 substrate achieves improved abrasion resistance and water/oil repellency, ensuring the water/oil repellent layer's effectiveness and longevity.
Implementation Method 1
a water/oil repellent layer comprising a condensate of a fluorinated compound having a reactive silyl group
Implementation Method 2
a hydrolyzed condensate of a fluorinated compound
Implementation Method 3
a deposition material, and a method for producing substrate with water repellent oil repellent layer
Data Source
AI summary
To provide a water/oil repellent layer-provided substrate having a water/oil repellent layer excellent in abrasion resistance, a deposition material and a method for producing a water/oil repellent layer-provided substrate. The water/oil repellent layer-provided substrate comprises a substrate, an undercoat layer and a water/oil repellent layer in this order. The water/oil repellent layer comprises a condensate of a fluorinated compound having a reactive silyl group, the undercoat layer contains an oxide contains silicon and at least one element of boron and phosphorus, and a ratio of the total molar concentration of boron and phosphorus in the undercoat layer to the molar concentration of silicon in the undercoat layer is from 0.003 to 9.