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Powder Coatings for Electric Insulation

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

Features:

High density of coating layers;

Excellent Electrical Insulation;

Excellent mechanical properties

Powder Coatings for Electric Insulation: Technical Overview

CategorySpecifications
DefinitionThermosetting powder coatings designed to provide electrical insulation and protection for conductive components
Key Functions– Prevent electrical leakage
– Resist high voltages
– Protect against environmental factors

Coating Types & Performance

TypeDielectric Strength (kV/mm)Temperature Resistance (°C)Common Applications
Epoxy-Based30-50150-180Transformers, bus bars
Silicone-Modified20-40200-250High-temperature coils
Polyester-Imide25-45180-220Motor windings, stators
Fluoropolymer15-30250-300Aerospace components

Key Electrical Properties

PropertyTest MethodTypical Value
Dielectric StrengthIEC 60243≥30 kV/mm
Volume ResistivityIEC 60093≥10¹⁴ Ω·cm
Arc ResistanceASTM D495≥180 sec
Tracking ResistanceIEC 60112CTI ≥600 V

Application Process

StepParametersEquipment
Surface PreparationDegreasing, sandblastingPretreatment line
Powder ApplicationElectrostatic spray (40-80 kV)Spray booth
Curing160-200°C × 10-20 minConvection oven
Quality ControlThickness: 80-150 µm
Adhesion: Class 0 (ISO 2409)
Coating analyzer

Advantages vs. Liquid Coatings

FeaturePowder CoatingLiquid Coating
VOC EmissionsZeroHigh
Edge CoverageExcellentModerate
Curing TimeFast (10-20 min)Slow (hours)
Waste Reuse95%+ reclaimableNot possible

Industry Applications

SectorComponentsKey Requirements
Power ElectronicsBusbars, capacitorsHigh dielectric strength
Electric MotorsStators, rotorsThermal + abrasion resistance
Consumer ElectronicsPCBs, heat sinksThin-film insulation
Renewable EnergySolar invertersUV + moisture resistance

Future Trends

TrendImpact
Low-Temperature CureEnables coating of heat-sensitive substrates
Enhanced Thermal ConductivityImproves heat dissipation while insulating
Self-Healing CoatingsRepairs minor cracks autonomously
Halogen-Free FormulationsEco-friendly flame retardancy

 

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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