No. | Item | Technical Data | Test method | ||
1 | Physical properties | Physical appearance | drying、 no caking, no impurity | Visually check | |
2 | colour | same as sample show | Visually check | ||
3 | density(g/cm³) | 1.2~1.8 (refer to color) | |||
4 | sieved residue | 125μm mesh no residue left | |||
5 | Colloidal process(gel stage) | 80-240S | GB/T 16995 | ||
6 | Particle dimension | 10-100μm, ≥95%; 0. 5-10μm, ≤5%; average: 30-60um | |||
7 | Storage(month) | Dry Cleanroom,≤27°C,6Months | Visually check | ||
8 | Cure time(°C, min) | 200°C, 10 min | GB/T 1728 | ||
9 | harmful ingredients | ①、Pb≤90mg/Kg; ②、Hg ≤60m/Kg; ③、Cd≤75mg/Kg; ④、Cr6+:≤60mg/Kg; ⑤、BB:≤1000mg/Kg; ⑥ 、PBDE:≤1000mg/Kg | ROSH standard |
No. | Item | Technical Data | Test method | ||
10 | coating appearance requirement | appearance | flat , smooth, not a sign of large particle, sagged face, fisheyes, pinholing, craters and the other defects. | GB Standard | |
11 | Film thickness (um) | 60-90 | GB/T13452 | ||
12 | gloss(60° ) | ≥90% | GB/T 9754 | ||
13 | coating Physical properties | hardness | ≥1H | GB/T 6739 | |
14 | adhesion(square cut) | ≤level 1 | GB/T 9286 | ||
15 | adhesion(circle cut) | ≤level 2 | GB/T 1720 | ||
16 | flexibility (mm) | ≤2 | GB/T 1731 | ||
17 | impact resistance/ (kg ·cm) | 50, strong against frontal impact | GB/T 1732 | ||
18 | coating chemical resistance properties | Water resistance(23士2°C, 480hr ) | No Outgassing, rustless, no chip and peel | GB/T 1733 | |
19 | acid resistance (25°C 0.05mol/L H2S04) | Gives 48 hours guarantee on not a sign of outgassing, wrinkling, permission on limited color shift | GB/T9274(甲) | ||
20 | Coating weather resistance properties | Humidity resistance (240hr) | ≤level 1 | GB/T 1740 | |
21 | neutral salt-spray resistant shot blasting | 480hr, Corrosion width of single lateral side at scratch≤2mm,No outgassing, rustless | GB/T 1771 | ||
22 | artificial accelerated weathering resistance ( Xenon lamp ,100hr, Level 1) | No crack, no chip and smash, no outgassing, strict limited color shift (△E≤4.0), Opacity ≤50% | GB/T 1865 | ||
23 | Outdoor sunlight exposure | Natural sunlight exposure(3 years), level 1, no chip and smash, permission on limited color shift | GB/T 1865 |