製品紹介 MPA#5000 Mirror Backing Paint
| Item | Standard value |
|---|---|
| Viscosity（Zahn cup #3／25℃） | ３８±３sec |
| Specific gravity | 1.30±0.02／20℃ |
| Grind size（JIS A method | 30μ or less |
| Solid content（by weight） | 61±2% |
| Solid content（by volume） | 45±2% |
| Boiling range | 116〜172℃ |
| Vapor density | Heavier than air |
| Evaporation rate | Slower than ether |
| Flash point | 27℃ |
| Coating item | Curtain coating method |
|---|---|
| Viscosity（Ford cup#4／25℃） | 30sec. |
| Diluting solvent | Xylene/Butyl Cellosolve=95/5(by weight) |
| Glass temperature in coating | 20〜30℃ |
| Glass temperature in drying | 120〜150℃ |
| Drying time | 3〜4min |
| Dry film thickness | 425〜35μ |
| Amount of paint（g／m2） | 100〜120 |
| No. | Testing item | Test result | Test condition |
|---|---|---|---|
| 1 | Drying requirement | 140℃×4min | Glass temperature |
| 2 | Film thickness | 30μ | Measured by depth gauge |
| 3 | Hardness | Ｈ | Mitsubish pencil “ＵＮＩ” |
| 4 | Adhesion | １００／１００ | Adhesive cellophane type applied at 1mm intervals in checker board pattern |
| 5 | Acid resistance | Ａ：No change Ｂ：No change | Immersed in 5% HCL at normal temperature For 2 hours |
| 6 | Alkali resistance | Ａ：No change Ｂ：No change | Immersed in 5% NaOH at normal Temperature for 1 hours |
| 7 | Moisture resistance | Ａ：No change Ｂ：No change | At 60℃ RH 100% for 240 hours |
| 8 | Hot water resistance | Ａ：No change Ｂ：No change | 60℃ pure water for 240 hours |
| 9 | Salt spray | Ａ：No change Ｂ：No change | DIN MIRROR TEST #50021 60℃ pure water for 240 hours |
| 10 | Cass test | Ａ：No change Ｂ：No change | DIN MIRROR TEST #50021 For 4 hours |
The performance of a mirror coated by the MPA#5000 in the curtain coating method is as follows.