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NEster
Product Detailed
polyester resin for hybrid power coating
Principal Properties and Applications | ||||
NEster® P 5010 is a medium reactivity polyester resin, designed for | ||||
50/50 epoxy/polyester hybrid system. Powder coatings based on it | ||||
exhibit good flow and excellent overbake resistance. | ||||
Product Specifications | ||||
Property | Range | Test Method | ||
Appearance | Pale granules | Visual | ||
Acid value, mgKOH/g | 66~76 | ASTM D1639 | ||
Viscosity @ 175°C, mPa·s | 7000~11000 | ASTM D4287 | ||
Gardner Color(50% solution) | max.3 | ASTM D1544 | ||
Other Data | ||||
Property | Range | Test Method | ||
Glass transition temp., °C | approx. 55 | DSC | ||
Packaging | ||||
White PE bag, N.W.25kg/bag, 1000kg/pallet. | ||||
Storage | ||||
The product can be stably stored for at least one year when kept | ||||
in closed containers in a dry and clean place at temperature below | ||||
30°C. For product older than one year, it is recommended to confirm | ||||
by testing prior to use. Exposure to sunlight should be avoided. |
Starting Formulation | |||
Component | Weight % | ||
NEster® P 5010 | 32.0 | ||
Epoxy Resin1) | 32.0 | ||
Titanium dioxide2) | 34.5 | ||
Flow control agent3) | 1.0 | ||
Benzoin | 0.5 | ||
1)DER 663U Dow Chemicals, or Araldite GT 7004, Huntsman | |||
2) Ti-Pure® R-706, DuPont, or Kronos 2310 Kronos Titanium | |||
3) Resiflow PV5, Worlée-Chemie, or BYK 365P BYK-Chemie | |||
Extrusion & Application Conditions | |||
Extruder: | SLJ-30A | ||
Zone I temp.: | 85~105°C | ||
Zone II temp.: | 100~120°C | ||
Screw speed: | 200rpm | ||
Panel: | 0.5mm pre-treated cold-rolled steel | ||
Spray gun: | Corona spray gun | ||
Voltage: | 60~90kV | ||
Curing conditions: | 15 min. @ 180°C | ||
Film Properties | |||
Property | Result | Test Method | |
Film thickness, μm | approx. 60 | ASTM D1186 | |
Gloss @ 60º, % | min. 90 | ASTM D523 | |
Direct/reverse impact, inch lbs | 160/160 | ASTM D2794 | |
1/8" Conical mandrel | pass | ASTM D522 | |
Adhesion(cross cut) | 5B | ASTM D3359 | |
Pencil hardness(Mar) | H | ISO 15184-98 |