Epoxy Polyester Resin HH2685 for Aluminum Wheel hub(car rim) Powder Coating

◇ Applications:

HH2685 is a carboxyl polyester resin designed for 60/40 hybrid powder coatings.

◇ Basic features:

Excellent leveling, high gloss

Good chemical performance and mechanical properties

Good storage stability

◇ Specifications:

Appearance White or light yellow transparent flakes

Color(50%DMF): max:3

Acid number(mgKOH/g) 48～54

Softening point(℃) 100～110

Glass transition temp.( ℃) ～55

Melting viscosity(200℃, cone/plate, mPa·s): 3200±500

Reactivity at 180℃(s, 40% Epoxy): 250±50

◇ Recommend Formulation:HH2685—E12

◇ 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

Coating film thickness: 50～70μm

Degreased cold-rolled steel 0.5mm

◇ Curing Requirement: 180℃×20min

◇ Film Properties:

Gel time(180℃,sec) 230~360

Horizontal flow:(180℃),mm: 28~33

Gloss(60°): ≥90%

Bending(φ1mm): pass

Adhesive(1mm,grade): 0

Pencil hardness: 1H

Impact(40cm): pass

Remarks:all the polyester resins could be customizes to Non-tin (A) ,anti gas burners(G),tribo gun(T) and anti-blooming(F)

Kinte have repeatedly introduced advanced technology in the industry, with advanced production equipment, testing instruments and high-quality technical talents;We will meet the needs of new and old customers with excellent quality and perfect service.