Fluorine-free water repellent coating
In response to social demands, we have developed and made available for purchase a coating material that does not utilize fluorine (PFAS).
OR-510
Characteristics
| Water repellent |
Reduces the adhesion of water drops and water marks |
| Antifouling |
Ink, fingerprints etc. wipe off easily |
| Low refractive index |
Has less impact on optical properties |
| Process |
Evaporated and deposited with SiO2 to ensure the highest performance. |
Uncoated
Coated
Basic features
|
OR-510 (Fluorine-free product) |
OF-SR (Standard fluorine product) |
| Contact angle (2.5μL of pure water) |
106° |
108° |
| Sliding angle (30μL of pure water) |
1° |
8° |
| Refractive index |
1.328 |
1.314 |
| Recommended coat thickness |
6nm |
10nm |
Slipperiness evaluation
| Sliding angle measurement method |
| Measuring equipment |
Contact angle meter |
| Measurement method |
Tangent method |
| Type of droplet liquid |
Pure water: ion exchanged water |
Xenon Weather Meter Test
| Accelerated weathering test conditions |
| Test equipment |
Xenon weathering meter |
| Relative humidity |
50 [%Rh] |
| Test duration |
920 [hours] |
| Light source |
Xenon arc lamp |
| Filter |
Quartz/ #275 |
| Surface radiation |
180 [W/m2] |
| Water jet condition |
18 min of mist spray out of 120min of illumination |
Developed products
Basic performance
|
Developed product-03-001 |
Developed product-01-001 |
OR-510 |
OF-SR |
| PFAS (Contains organic fluorine compounds) |
No |
No |
No |
Yes |
| Contact angle [°] (2.5μL) |
Pure water |
108 |
102 |
106 |
108 |
| Hexadecane |
33 |
20 |
37 |
65 |
| Sliding angle [°] Pure water (30μL) |
3 |
20 |
1 |
8 |
| Dynamic friction coefficient (Measurement condition: 50g/cm2) |
0.15 |
0.40 |
0.10 |
0.24 |
| Surface free energy [ｍJ/m2] |
24.2 |
26.4 |
22.5 |
13.6 |
| Pure water contact angle after wear [°] (1kg/cm2 1000 times)) |
92 |
101 |
10° or less |
107 |
Wear-resistance evaluation
| Wear-resistance test conditions |
| Substrate type |
BK-7 |
| Abrasive material |
Steel wool |
| Mass [g] |
1000 |
| Speed [cycle/min] |
60 |
| Wear distance [mm] |
10 |
|
Developed product-03-001 |
Developed product-01-001 |
OR-510 |
OF-SR |
| Initial contact angle [°] |
108 |
102 |
106 |
108 |
Anti-fouling evaluation
| Developed product-03-001 |
Developed product-01-001 |
OR-510 |
OF-SR |
 |
 |
 |
 |
Please feel free to contact us with any requests or inquiries regarding our products.
