Super Durable Smooth High Gloss 93/7 Powder Coating Resins NH9307 for TGIC Cure 

Applications:

NH-9307 is a carboxyl polyester resin designed for 93/7 polyester/TGIC powder coatings to be cured at 200℃.

 Basic features:

Excellent weathering resistance

Excellent anti-yellowing and water boiling resistance

Good mechanical properties

Good storage stability

 Specifications:

Appearance: light yellow or white transparent flakes

Color(50%DMF) max:2

Acid number(mgKOH/g): 30-36

Softening point(℃): 101～115

Glass transition temp.( ℃): ～65

Melting viscosity(mPa.s200℃): 5000±1500

Reactivity at 180℃(s, 7% TGIC): 130±40

 Recommend Formulation:

NH9307—TGIC

 Extrusion Condition:

Two-screw extruder

Zone I: 90～110℃ Zone II: 110～120℃

Speed of revolution: 500-1200 rpm

Fineness of powder: ＜100μm

 Application Condition:

Electrostatic spraying with: 40～70KV

Degreased cold-rolled steel: 0.5mm

Film thickness: 50～70μm

Curing Requirement: 200℃×10 min

 Film Properties:

Gel time (180℃, s): 100-350

Horizontal flow(180℃,mm): 21~27

Gloss(60°): ≥85%

Adhesive(1mm,grade): 0

Pencil hardness: ≥1H

Bending (φ1mm): Pass

Impact(direct): pass 40 kg·cm

Packaging:

PE bags, N.W. 25KG±0.1KG / bag