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RAL1000 green beige electrostatic thermoset powder coating for outdoor metal iron
We all know that thermoset is the most common powder coating considered to be thin but hard.
Thermoset powder coating and thermoplastic powders, they have different features to suit different applications. Here we list a detail comparison that may help you know more about these two powder coatings.
Structure
Thermoplastic powder coating features longer chain molecules; in
contrast, thermoset powder coating starts with short molecules
which are cross-linked together during the curing process to form a
permanent matrix based on an irreversible chemical reaction. And
the structure differences determine the different properties of
these two powder coatings.
Weight
Most thermoplastic powder coatings are in lighter weight so that
fewer pounds of thermoplastic powders are used to achieve the same
thickness of thermoset coating.
Thickness
Generally, thermoset powder coating is considered as a thin, rigid
and tightly cross-linked coating; while thermoplastic powder
coating is thicker than thermoset - about 8 mils to 100 mils in
thickness for specific requirements.
Flexibility & impact resistance
High hardness enables the thermoset powder coating extremely
resistant against scratch and mar. Thermoplastic type is more
closely associated with plastic film featuring high flexibility,
ductility and high percent elongation which impart high impact
resistance to the coating, yet lower scratch and mar resistance.
But our Adherest polyethylene powder coating breaks this limitation
- that is because its high adhesion ensures the coating tightly
adheres to the parts regardless of the rough scratch and mar.
Recyclability
Both thermoplastic and thermoset powder coatings are dry
particulates that will melt and flow to from a smooth coating.
However, thermoplastic powder coating is recyclable as they will
soften and flow again if reheated at a temperature about 300°F. And
thermoset powder coating is irreversible after the initial cure and
cooling. Thus, they are not recyclable.
Thermoset Pros
Thermoset Cons
Product Details | |
Type | Epoxy Polyester Powder Coating |
Gloss Level | Gloss 90% |
Surface Finish | Smooth |
Powder Property | |
Appearance | Fine powder |
Particle Size | Average 32-40μm |
Specific Gravity | 1.3-1.5g/cm3 |
Coverage | 7-8 square meter per Kg at 80μm film thickness |
Application Recommendation | |
Applicatoin | Corona |
Application Voltage | 60-90 KV |
Gun to Component Distance | 15-30 CM |
Film Thickness | 80-90μm |
Curing Temperature | 190℃(Object temperature) for 15 minutes |
Powder Coated Film Mechanical Properties | |
Adhesion | Cross-cut (2mm), no loss of adhesion |
Impact Resistance | Direct & Indirect 50kg/cm |
Pencil Hardness | 2H |
Flexibility | 7mm Mandrel |
Bending Test | 3mm |
Powder Coated Film Chemical Resistance | |
Salt Spray Test | 5% NaCl Solution for 1000 hours - No change |
Acid Resistance | 5% HCL for 48 hours dip test - No change |
Alkali Resistance | 5% NaOH for 48 hours dip test - No change |