Powder Paint Polyester resin NH8081&NH8586 for Dry blending Low Gloss
◇ Applications:
NH8081/NH8586 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 NH8586
Appearance: pale yellow flake pale yellow flake
Color(50%DMF): ≤2 ≤4
Acid number(mgKOH/g): 49～55 21～25
Softening point(℃): 105～115 106～116
Glass transition temp.( ℃): ~67 ~69
Melting viscosity: 8250±1250 6900±400
(200℃, cone/plate, mPa·s)
Reactivity at 180℃(s, TGIC): 75±25 170±50
◇ Recommend Formulation:
| Formulation | NH8081 | NH8586 | 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°): ≤40%
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 has domestic first-class polymer material R & D and testing equipment. As an industry central enterprise integrating the advantages of powder, liquid coating and resin industry chain in China, Optimus materials shoulders the important task of national technological innovation, energy conservation and emission reduction and environmental friendliness. It has successively undertaken more than 40 scientific and technological projects of the Ministry of science and technology, the Commission of industry and information technology and provincial and urban areas, won more than 30 national provincial and urban science and technology awards, and now has more than 50 authorized invention patents.
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