SolblackPRODUCT INFORMATION
The optical confinement effect of the nano-sized three-dimensional structure achieves high light absorption.
Functions / characteristics
Processable size（mm）
350×800×800
Characteristics
- The optical confinement effect of the nano-sized structure achieves high light absorption.
- Matte black does not almost reflect light.
- It is little outbreak of the outgas, ideal for use in a vacuum.
- Corrosion resistance is better than electroless nickel plating.
- Heat collecting property is higher than blackbody coating.
- Excellent heat and light resistance.
- It has a uniform coating even so complicated shape.
- No environmentally regulated substances such as chromium and lead are used.
※Due to the special film structure, the plating film peels off easily, making it unsuitable for friction environments.
Characteristics
| Light absorption | Absorbs about 98% of the light in the visible light range (380-750 nm) on average. |
|---|---|
| Low reflection | Regular reflectance of visible light at 12° angle of incidence is 0.2%. |
| Use in vacuum | Rate of outgassing is about one order of magnitude lower than PhosblackⅢ. |
| Corrosion resistance | Corrosion resistance to artificial acid rain is better than electroless nickel plating. |
| Heat resistance | Even after being held at 200°C for 2 hours, the reflectance does not changes. |
| Accuracy | It has a uniform coating even so complicated shape. |
| Materials | A variety of materials can be treated. Please contact us for details. |
Purpose
Gravitational Wave Telescope(KAGRA), Antireflection and stray light applications for optical telescopes
TEST DATA
Surface observation
Test method
The surface of Solblack was observed by SEM.
Equipment used: JEOL S-4800
Result
Solblack was observed to have a three-dimensional structure of creeks.
Surface
Observation at KINDAI UNIVERSITY center for collaborative research.
Cross section
Observation at KINDAI UNIVERSITY center for collaborative research.
Light absorption
Test method
An integrating sphere was attached to a spectrophotometer to measure the total light absorption.
Equipment used: Hitachi High-Tech U-3900 with 150mm diameter integrating sphere
Measurement range: 200 to 800 nm
Measurement light source: D2 lamp (200 to 340 nm), tungsten lamp (340 to 800 nm)
Result
Solblack absorbed 98% of the light in the visible light range.
Reflection
Test method
An absolute reflectance measurement device was attached to a spectrophotometer to measure the reflection.
Equipment used: Shimadzu Solidspec370
Measurement range: 400 to 2800 nm
Light incidence angle: 12°
Result
The regular reflectance of Solblack was less than 3% in all measurement areas, and especially less than about 0.2% in the visible area.
Vacuum characteristics
Test method
The gas release rate from the plated surface was measured by conductance modulation method.
Result
Heat collecting
Test method
The surface-treated aluminum pipe was irradiated with light, and the fluctuations in the internal water temperature
were recorded.
Amount of water: 8 mL
Light source: 50W bulb
Distance from light source: 10 cm
Result
集熱性のグラフ
Heat resistance
Test method
The test piece was held at 200°C for 2 hours, and the average total reflectance in the visible region before and after the test was compared.
Result
Even after being held at 200℃ for 2 hours, the reflectance does not changes.
| 平均反射率 | |
| Before heat treatment | 2.5 % |
| After heat treatment | 2.5 % |