Polyester Resin NH3386 for General Industrial Powder Coating
◇ Applications:
NH3386 is saturated carboxyl polyester resin for applications of polyester/TGIC powder coating system. Because polyester resin has polar groups, the powder loading rate is higher than that of epoxy resin, it is not easy to yellowing during baking, high gloss, good leveling, plump paint film, light color and other characteristics, so it has good decoration. Generally used in refrigerators, washing machines, vacuum cleaners, instrument housings, bicycles, furniture and other fields.
◇ Basic features:
Good flowability
Outstanding mechanical properties
Excellent of heat resistance and excellent anti-yellowing
Excellent storage stability
◇ Specifications:
Appearance pale yellow flake
Color(50%DMF): max:2
Acid number(mgKOH/g): 31～36
Softening point(℃): 105～115
Glass transition temp.(℃): ～69
Melting viscosity(200℃, cone/plate, mPa·s): 6500±1500
Reactivity at 180℃(s, 7% TGIC): 170～250
◇ Recommend Formulation:
| NH3386 | TGIC | Filler ＆ pigment | Leveling agent | Benzion |
| 200 | 15 | 140 | 2.4 | 1.2 |
◇ Extrusion Condition:
Two-screw extruder
Zone I: 90～110℃ Zone II: 110～120℃
Speed of revolution: 500～1200rpm
Fineness of powder: ＜100μm
◇ Application Condition:
Electrostatic spraying with: 40～70KV
Coating film thickness: 50～100μm
Degreased cold-rolled steel 0.5mm
◇ Curing Requirement: 200℃×10min
◇ Film Properties:
Gel time(180℃,sec): 260~360
Flow(180℃,mm) :23~28
Gloss(60°):≥85%
Bending(φ1mm): pass
Adhesive(1mm,grade): 0
Pencil hardness: 1H
Impact(50cm): pass
Storage test(40℃,24hr): good
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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ISO90001 Saturated Polyester Resins For Industrial Powder Coating Images
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