Powder Paint Polyester resin NH8081&NH8506 for Dry bleding Low Gloss
◇ Applications:
NH8081/NH8506 are saturated carboxyl polyester resins for low gloss polyester/TGIC powder coatings by a dry blending procedure.
◇ Basic features:
Low gloss film
Excellent mechanical properties
Good chemical resistance
Good leveling
Excellent boiling water resistance
◇ Specifications:
NH8081 NH8506
Appearance: pale yellow flake pale yellow flake
Color(50%DMF): ≤2 ≤4
Acid number(mgKOH/g) 49～55 22～25
Softening point(℃): 105～115 103～113
Glass transition temp.( ℃): ~67 ~61
Melting viscosity: 8250±1250 8100±500
(200℃, cone/plate, mPa·s)
Reactivity at 180℃(s, TGIC): 75±25 505±75
◇ Recommend Formulation:
| Formulation | NH8081 | NH8506 | TGIC | Filler ＆ pigment | Leveling agent | Benzoin |
| I | 270 | — | 30 | 200 | 3 | 1.5 |
| II | — | 270 | 14.2 | 200 | 3 | 1.5 |
◇ Extrusion Condition:
Two-screw extruder
Zone I: 90～110℃ Zone II: 110～120℃
Speed of revolution: 500～1200rpm
Fineness of powder: ＜100μm
Blend I and II in the weight ratio of 1:1 before grinding.
◇ Application Condition:
Electrostatic spraying with: 40～70KV
Coating film thickness: 50～70μm
Degreased cold-rolled steel 0.5mm
◇ Curing Requirement: 200℃×10min
◇ Film Properties:
Gloss(60°): ≤45%
Bending(φ2mm): Pass
Adhesive(1mm,grade): 0
Pencil hardness: ≥H
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)
Kinte Material Technology Co., Ltd. is a state-owned holding enterprise specializing in the R & D, production and sales of powder coatings, saturated polyester resin for powder coatings, liquid coatings and special new materials. It is subordinate to China National Electric Apparatus Research Insitute Co., Ltd. , which makes us professional and trustworthy.
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