Kinte Materials Science and Technology Co.,Ltd
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High Tg Weather Durable Polyester Resin 93/7 NH3307 in TGIC Cure for High Gloss Powder Coating of Aluminum Profile
Applications:
NH3307 is a saturated carboxyl polyester resin for polyester/TGIC powder coating system at the ratio 93/7.
Excellent flowability and durability, suitable for aluminum profile powder coatings.
Advantages of powder coatings
1. Health and environmental protection
All kinds of liquid chemical harmful film-forming, dispersion, wetting, leveling, anti-corrosion and anti mildew additives added to achieve coating performance are omitted.
2. Convenient transportation and storage
Ordinary coatings contain about 20-50% water or solvent, while powder coatings are completely solid without water or solvent, which is convenient and safe for transportation. In addition, coatings containing water or solvent tend to freeze when the transportation and storage temperature is lower than 0 ℃. This problem does not exist in powder coatings.
3. No preservative is required
In the traditional liquid coating, there is both water and bacterial food, which is easy to be polluted by bacteria. Therefore, in order to prevent deterioration, preservatives should be added, while latex powder coatings have no bacterial pollution and do not need preservatives
4. Paint smell
Compared with the general traditional coating smell residue, this coating can disperse quickly, which can be said to disappear immediately.
Basic features:
Excellent leveling
Excellent anti-yellowing
Good chemical resistance and mechanical properties
High storage stability;
High weathering resistance
Suitable to make high gloss powder coatings for aluminum profile.
Specifications:
Appearance white or light yellow transparent flakes
Color (50%DMF): max: 1
Acid number(mgKOH/g): 30～35
Softening point(℃): 103～113
Glass transition temp.(℃): ～67
Melting viscosity(200℃, cone/plate, mPa·s): 5000±1000
Reactivity at 180℃(s, 7% TGIC): 230±30
Recommend Formulation:NH3307—TGIC
| NH3307 | TGIC | Filler ＆ pigment | Leveling agent | Benzoin | 701 |
| 558 | 42 | 383 | 8 | 4 | 5 |
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
Film thickness: 50～100μm
Degreased cold-rolled steel 0.5mm
Curing Requirement: 200℃×10~15min
Film Properties:
Gel time(180℃,sec) 290~390
Horizontal flow(180℃,mm): 25~28
Gloss(60°): ≥85%
Bending(φ1mm): Pass
Adhesive(1mm,grade): 0
Pencil hardness ≥1H
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)
