Rail Transit Interior powder coating MT-A700 series
Coating characteristics:
Excellent leveling
Excellent UV and salt spray resistance
Good easy-to-clean function
Application parameters:
Atomization air pressure: ~0.7bar
Primary air pressure: ~0.7bar
Recommended voltage: 40-90KV
Secondary rework:
Surface treatment: grinding + air cleaning
Recoating mode: Reduce spraying voltage
| Chemical type | External part: polyester type
Internal part: polyester epoxy mixed type |
| Appearance | External part: color depends on customer requirements
Internal part: mainly metallic silver and wood grain powder and white plane |
| Particle size | Depends on product type and color |
| Gloss | Depends on product |
| Specific gravity | 1.2-1.8g/CM’ (related to color) |
| Storage conditions | v30P sealed in a dry and cool place |
| Validity period | 12 months (v30°C) |
| Curing conditions (workpiece temperature) | 180*15 minutes, 200*10 minutes |
| Item | Instrument | Judgment standard | Test standard |
| Adhesion | Single-edged knife, tape | 0 crack | GB/T 9286
ISO 2409 |
| Impact resistance | Impact tester | 50 kg.cm (0 8mm )
2.5Nm (016mm) |
GB/T 1732
ASTM D 2794 ISO 6272 |
| Coating hardness | Hardness tester | *1H | GBZT6739 ASTM 03363 |
| Alkali resistance | 0.1N NaOH. Beaker | M48H, coating has no blistering, shedding, rust, or spots | GB/T9274 |
| Acid resistance | 0.1N acid, beaker | M24H, coating does not become mushy | GB/T9274 |
| Salt spray resistance | NSS fog box | *500H, rust and blister < 2mm | GB/T 1771 ASTMB-117 ISO 7253 |
| Humidity and heat resistance | Constant temperature and humidity box | a 500H, slight discoloration is allowed, no blistering, rust, or shedding | GB/T 1740 ISO 6270 |
| Weather resistance | Artificial accelerated aging box | OUV-B313500H M 3 level | GB” 1865 ISO 11341 |
| Water resistance | Steaming water | 20 cycles allow coarsening, but no blistering | GB/T1733 ASTM D 2247 |
| Flame retardancy | Third-party test | ISW35 | ASTM E162 |
| Third-party test | DS(1.5)W1OO DS(4.0)W165 | ASTME662 | |
| Third-party test | V0 grade | UL-94 |
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