What is Water and oil repellent coating?
These coatings have a property that repels water and oils that land on their surface.
Benefits: Lowers adhesion of contaminants, improves ease of contaminant removal, protects against scratches, etc.
Characteristics by Type
SURFCLEAR 100
Water drops run off easily
Fingerprints and other oily contaminants wipe off easily
Difficult to scratch
NEWSURFCLEAR 300
Provides stable water and oil repellency even outdoors
Significantly lower degradation due to salt damage
Highly resistant to acids, alkalis, and other chemicals
Common Characteristics
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Water repellent
Reduces the adhesion of water drops, water marks
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Antifouling
Reduces the attachment of fingerprints, allows easy wiping and enhances durability
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Scratch resistant
Reduces the occurrence of scratches due to decreased friction
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Anti-corrosive
Mitigates corrosion of metal surfaces
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Low refractive index
Provides less impact on optical properties
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Production process
Vapor deposition coating made on SiO2, giving highest quality
Basic Features
| SURFCLEAR 100 | SURFCLEAR 300 | |
|---|---|---|
| Contact angle (2.5 μl of pure water) |
117° | 115° |
| Sliding angle (30 μl of pure water) |
2° | 7° |
| Refractive index | 1.33 | 1.34 |
| Recommended coat thickness | 16nm | 10nm |
SURFCLEAR 100 provides high slip performance even with tiny water drops
| Sliding Angle for Water Test Conditions | |
|---|---|
| Measurement device | Contact angle measuring instrument |
| Measuring method | Tangent method |
| Droplet used | Pure water: Ion-exchanged water |
Durability Assessments
SURFCLEAR 300 maintains its performance even in extreme environments
| Accelerated Weathering Test Conditions | |
|---|---|
| Test device | Xenon Weather Meter |
| Relative humidity [%Rh] | 50 |
| Testing time [hours] | 920 Equivalent to two years |
| Light source | Xenon arc lamp |
| Filter | Quartz/ #275 |
| Irradiance [W/m2] | 180 |
| Water spray cycle | Sprayed for an 18-minute period for each 120-minute period of exposure |
The SURFCLEAR series exhibits high abrasion resistance
| Abrasion Resistance Test Conditions | |
|---|---|
| Abrasion material | Steel wool #0000 |
| Load [g] | 1000 |
| Speed [mm/sec] | 60 |
| Abrasion distance [mm] | 15 |
Application
Application examples
SURFCLEAR 300
- Sunglasses and goggles … improves ease of removing fingerprints without affecting optical characteristics
- Automobile cameras and mirrors … reduces adhesion of water drops and formation of water marks
- Smartwatches, wireless headphones, and other wearable devices … improves ease of removing contaminants
- Digital signage and other touch panels … minimizes likelihood of scratches by maintaining slip performance in outdoor applications
- Security cameras and video intercoms … reduces maintenance by preserving antifouling performance in outdoor applications
SURFCLEAR 100
- Smartphones, tablets, and game consoles … improves operability with a better finger-sliding feel and improves ease of removing fingerprints
- Watches and game consoles … minimizes likelihood of scratches by improving slip performance
- Eyeglasses, sunglasses, and camera lenses … reduces adhesion of water drops without affecting optical characteristics
- Displays … reduces adhesion of fingerprints and other oily contaminants
Deposition examples
See examples of depositions that combine anti-reflection and antifouling coatings
Pamphlet Download（PDF）
SURFCLEARWe can provide pamphlet and technical data and sample boards; if you need them, please contact us using the inquiry form.