NH-7808 is a Hydroxylated polyester resin for polyester/isocyanate powder coating system.
2695059506
+86-20-86985846
kmcinfo@kinte.com.cn
Basic features:
-Good chemical resistance and mechanical properties
-Excellent leveling
Specifications:
|
Appearance |
White or pale yellow transparent flake |
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Color(50%DMF) |
max:2 |
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Hydroxyl Value(mgKOH/g) |
25~35 |
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Softening point(℃) |
102~112 |
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Glass transition temp(℃) |
~59 |
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Melting viscosity(200℃,cone/plate,mPa·s) |
9000±500 |
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Reactivity at 180℃(s,17%B1530) |
560±100 |
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Recommend Formulation:
|
HH-7808 |
Hardener |
Filler & pigment |
Leveling agent |
Benzoin |
|
200 |
40 |
125 |
4.5 |
2.5 |
Extrusion Condition:Two-screw extruder
|
Zone Ⅰ |
90~110℃ |
ZoneⅡ |
110~120℃ |
|
Speed of revolution |
500~1200rpm |
Fineness of powder |
<100μm |
Application Condition:
|
Electrostatic spraying with |
40~70KV |
|
Coating film thickness |
50~70μm |
|
Degreased cold-rolled steel |
0.5mm |
Curing Requirement:200℃*15min
Film Properties:
|
Gloss(60°) |
>=85% |
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Pencil hardness |
>=1H |
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Gel time(180℃,sec) |
660~900 |
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Horizontal flow(180℃),mm |
27~31 |
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Bending(φ1mm) |
Pass |
|
Adhesive(1mm,grade) |
0 |
|
Direct Impact(50cm) |
Pass |
Packaging:PE bags, N.W. 25KG±0.1KG / bag