Composite Primer Film for Fingerprint-Resistant Coatings
Solution Overview
Problem
Existing deposition methods for fingerprint resistance on glass or plastic surfaces suffer from high equipment investment costs, high defective rates, and insufficient performance, particularly in terms of durability and productivity.
Innovation Solution
A composite coating layer using silicon oxide (SiOx), titanium (Ti) compounds, aluminum (Al) compounds, and zirconium (Zr) compounds is applied as a primer film, followed by a water-repellent and oil-repellent coating film, deposited at a lower vacuum level to enhance durability and reduce production time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vacuum deposition technology is used to deposit fluorine compound on glass or plastic, then surface contamination is reduced, but productivity decreases and equipment investment cost increases
Solution Approach 1:
The invention changes the deposition parameters by using a lower vacuum level (10^-3 to 10^-6 Torr) compared to conventional high vacuum deposition, and employs a composite material system (SiO2 + TiO2/Al2O3/ZrO2) to achieve both high surface quality and productivity
Solution Approach 2:
The invention uses a composite coating structure with SiO2 as the base layer and TiO2, Al2O3, or ZrO2 as additional layers, where each material contributes specific properties: SiO2 provides adhesion and surface quality, while the other oxides enhance durability and hardness, achieving both reliability and productivity goals
2Manufacturing precision
If high vacuum deposition is used to ensure low defective rate, then surface quality improves, but equipment investment cost and production time increase
Solution Approach 1:
The invention reduces the vacuum level from conventional high vacuum (10^-6 to 10^-8 Torr) to a lower range (10^-3 to 10^-6 Torr), which significantly reduces production time while maintaining low defective rates through the use of composite materials that are less sensitive to vacuum conditions
Solution Approach 2:
The SiO2 layer acts as an intermediary between the substrate and the fluorine compound coating, providing a stable base that reduces sensitivity to vacuum variations and deposition conditions, thereby maintaining manufacturing precision even at lower vacuum levels
3Productivity
If water-repellent and oil-repellent material is directly deposited on glass or plastic, then productivity increases, but durability decreases
Solution Approach 1:
The invention performs preliminary action by depositing SiO2 and other oxide layers before applying the water-repellent and oil-repellent fluorine compound coating, creating a durable base structure that enhances the longevity and reliability of the final coating
Solution Approach 2:
The invention creates a composite structure where SiO2 provides adhesion and surface quality, TiO2/Al2O3/ZrO2 layers provide hardness and durability, and the fluorine compound provides water and oil repellency, achieving both high productivity and durability through material composition rather than process complexity
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 excellent abrasion resistance, salt water resistance, chemical resistance, and cosmetics resistance, while reducing production costs and enhancing productivity by shortening deposition time and improving overall production efficiency.
Implementation Method 1
depositing a primer film including the composite on the substrate
Implementation Method 2
vacuum coating... evaporating a fluorine compound in a vacuum to coat glass or plastic with a thin film
Implementation Method 3
water-repellent and oil-repellent function of a thin film... salt water resistance, chemical resistance, and cosmetics resistance
Data Source
AI summary
A composition for primer layer coating of a water- and oil-repellent coating layer so as to enhance the durability of the water- and oil-repellent coating layer, comprises a mixture which comprises at least one of a silicon oxide (SiOx) and titanium (Ti) compound, an aluminum (Al) compound and a zirconium (Zr) compound. A preparation method may comprise: preparing a glass or polymer substrate; forming, on the substrate, a portion on which a fingerprint-resistant layer is to be deposited within the substrate by etching; depositing a primer layer consisting of the composition on the surface of the substrate including the portion where the water- and oil-repellent coating layer is deposited; forming the water- and oil-repellent coating layer on the deposited primer layer; and purging the substrate on which the water- and oil-repellent coating layer is formed. The method has excellent wear-resistance, salt water resistance, chemical resistance and cosmetics resistance.