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Polyurathane-based Powder Coatings

OEM  OEM Services Provided
Feature Good stability
Classification Paint Additives
Advantage  Professional, Fast Delivery, Customizable
Samples Apply for free,Contact Export Director now ↓

Features:

Great adhesion and mechanical properties;

High gloss, great leveling and fullness;

Chemical and weather resistance

Polyurethane-Based Powder Coatings: Technical Overview

CategorySpecifications
DefinitionThermosetting coatings utilizing polyurethane resins cured with blocked isocyanates
Resin ChemistryHydroxyl-functional polyester/polyether + blocked isocyanate (e.g., IPDI, HDI)
Curing MechanismDeblocking at 160-200°C, forming urethane linkages

Performance Characteristics

PropertyValue/RatingTest Method
Gloss Retention>90% after 3000h QUVASTM G154
Chemical Resistance5/5 (alkali, acid, solvents)ISO 2812
Flexibility2mm conical mandrel passASTM D522
Impact Resistance160 in-lb directASTM D2794
Adhesion5B (cross-cut)ASTM D3359

Comparison with Other Systems

ParameterPolyurethaneEpoxyPolyester
UV Resistance★★★★★★★★★★★
Chemical Resist.★★★★★★★★★★★★★
Decorative Finish★★★★★★★★★★★
Curing Window160-200°C140-180°C180-220°C
Cost Index$$$$$

Formulation Guidelines

ComponentFunctionContent (%)
Hydroxy polyesterBase resin50-70
Blocked isocyanateCrosslinker15-25
Flow modifiersSurface control1-3
UV absorbersWeatherability2-5
CatalystsCure acceleration0.5-1.5

Application Parameters

Process FactorRequirements
Substrate Temp.180°C (metal), 160°C (heat-sensitive)
Film Thickness50-120μm
Transfer Efficiency60-80% (electrostatic spray)
Reclaim Ratio≤50% without property loss

Market Applications

IndustryTypical Uses
AutomotiveAlloy wheels, bumper guards
AgricultureHeavy equipment coatings
ArchitectureAluminum cladding
Consumer GoodsAppliance housings

Environmental & Safety

AspectStatus
VOC Emissions0 g/L
REACH ComplianceFully compliant (non-SVHC)
Worker ProtectionRequires isocyanate handling precautions

Key advantages highlighted:

Superior balance of chemical/UV resistance

Excellent mechanical properties

Broad curing window flexibility

Premium decorative finishes

Declaration: The products displayed on this website are intended exclusively for industrial applications or scientific research. They are not intended for medical, pharmaceutical, or food use. In accordance with applicable laws and regulations, purchasing organizations must hold valid qualifications and approvals.

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