Fluorinated Ether Surface Layer for Smartphone Abrasion and Sliding Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing surface treatment agents using fluorinated ether compounds provide excellent abrasion resistance but are inferior in sliding resistance, leading to issues such as smartphones slipping and breaking when operated or placed on surfaces.
Innovation Solution
A composition comprising a fluorinated ether compound with a hydrolyzable silyl group at one terminal and another fluorinated ether compound with hydrolyzable silyl groups at both terminals, where the ratio of —CF3 to —CF2— groups at the terminals is within a specific range, is used to form a surface layer with enhanced abrasion and sliding resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a fluorinated ether compound with hydrolyzable silyl group is used for surface treatment, then abrasion resistance is improved, but sliding resistance deteriorates
Solution Approach 1:
The invention changes the chemical composition parameters by specifying a particular ratio range of CF3 to CF2 groups (0.001 to 0.1) in the fluorinated ether compounds. This parameter optimization allows the surface layer to achieve both high abrasion resistance and improved sliding resistance, resolving the contradiction between these two properties.
Solution Approach 2:
The invention uses a composite approach by combining multiple fluorinated ether compounds with different terminal group configurations (one terminal vs. both terminals). This composite material strategy enables the surface layer to exhibit both excellent abrasion resistance and sliding resistance simultaneously, overcoming the limitations of single-compound treatments.
2Ease of operation
If fluorinated ether compound provides excellent oil and fat stain removability, then flexibility is improved, but sliding resistance deteriorates
Solution Approach 1:
By optimizing the CF3/CF2 group ratio to within the specific range of 0.001 to 0.1, the invention adjusts the chemical parameters to achieve a balance where the surface maintains excellent stain removability while also providing adequate sliding resistance, preventing devices from slipping.
Solution Approach 2:
The invention applies different fluorinated ether compound structures at different locations within the surface layer composition. Compounds with silyl groups at one terminal provide stain removability, while compounds with silyl groups at both terminals contribute to sliding resistance, creating a functionally differentiated surface treatment.
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 proposed composition effectively forms a surface layer that balances abrasion resistance and sliding resistance, preventing smartphones and similar devices from slipping and breaking when handled or placed on surfaces.
Implementation Method 1
a compound represented by the formula (1) and a compound represented by the formula (2), wherein L1, L2 and L3 are each independently a hydrolyzable group or a hydroxy group
Implementation Method 2
the ratio of the total number of moles of the groups represented by —CF3 present at the terminal of the fluorinated ether compounds, to the total number of moles of the groups represented by —CF2— present at a predetermined position in the fluorinated ether compounds
Data Source
AI summary
The composition containing a compound represented by the formula (1) and a compound represented by the formula (2),Rf1—(OX1)m1—O—Rf2—Y1—[Si(R1)n1L13-n1]g1 (1)[L23-n2(R2)n2Si]g2—Y2—Rf3—(OX2)m2—O—Rf4—Y3—[Si(R3)n3L33-n3]g3 (2),where Rf1 to Rf4, X1 to X2, Y1 to Y3, R1 to R3, L1 to L3, m1 to m2, n1 to n3, and g1 to g3 are as defined in the disclosure. An article, containing a substrate and a surface layer formed of the composition on the substrate.