Weathering Resistance TGIC Polyester Powder 93/7 Outdoor Use
Low Cost Polyester Resin 93/7 TGIC Cure NH3305 for Powder Coating with Good Weathering Resistance
◇ Applications:
NH3305 is a saturated carboxyl polyester resin for applications of polyester/TGIC powder coating system.
◇ Basic features:
Excellent leveling
Good weathering resistance
Good mechanical properties and chemical resistance
Good shelf life
Excellent anti-yellowing ability
No substances harmful to the environment added in the production process
100% environmental friendly
◇ Specifications:
Appearance:white or light yellow transparent flakes
Color(50%DMF): max:2
Acid number(mgKOH/g): 31～35
Softening point(℃) 105～115
Glass transition temp.( ℃) ～65
Melting viscosity(200℃, cone/plate, mPa·s): 4600～6200
Reactivity at 180℃(s, 8% TGIC) 160～280
◇ Recommend Formulation: NH3305—TGIC
| NH3305 | TGIC | Filler ＆ pigment | Leveling agent | Benzoin | 701 |
| 558 | 42 | 383 | 8 | 4 | 5 |
◇ Extrusion Condition:
Two-screw extruder
Zone I: 90～110℃ Zone II: 110～120℃
Speed of revolution: 500～1200rpm
Fineness of powder: ＜100μm
◇ Application Condition:
Coating film thickness: 50～100μm
Degreased cold-rolled steel 0.5mm
◇ Curing Requirement: 200℃×10min
◇ Film Properties:
|
Gel time(180℃,sec) |
260~360 |
| Horizontal flow(180℃,mm) | 25-30 |
| Gloss (60°) | ≥85% |
| Bending (φ1mm) | pass |
| Adhesive (1mm,grade) | 0 |
| Pencil hardness | ≥1H |
| Impact (50cm) | pass |
◇ Packaging:
PE bags, N.W. 25KG±0.1KG / bag
Remarks:all the polyester resins could be customizes to Non-tin (A) ,anti gas burners(G),tribo gun(T) and anti-blooming(F)
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