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High Tg Flame Retardant Epoxy Encapsulant for Transformer Insulation & Protection

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High Tg Flame Retardant Epoxy Encapsulant for Transformer Insulation & Protection

Brand Name : wenyou

Model Number : 9265

Certification : ISO9001, ISO14001, SGS, and UL

Place of Origin : China

MOQ : 20kg/pail as sample

Price : Negotiable

Payment Terms : Normally L/C,T/T

Supply Ability : Plenty of raw material in stock

Delivery Time : 7 -10 work days

Packaging Details : 20kg/pail, 220kg/barrel, 1200kg/tank

Classification : Double Components Adhesives

Usage : 12kV-40.5kV contact boxes, insulators, bushings, and other insulation products.

Application : Outdoor electrical insulators for medium and high voltage applications

Appearance of epoxy resin : transparent viscous liquid

Appearance of hardener : Light yellow transparent liquid

Viscosity at 25°C : 7500 - 13500mPa.s

Density at 25°C : 1.16 - 1.20g/cm3

Vapor Pressure at 25°C : ＜ 0.01Pa

Flash point : around 135°C

Description : Epoxy resin with curing agent to produce power industrial CT PT transformer insulator bushing

Epoxy Value : 5.1 - 5.5Eq/kg

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LE-9265/LH-9265: High Tg UL 94 V-0 Epoxy for HV Insulators & Bushings | APG/Vacuum Casting

Product Overview

LE-9265/LH-9265 is a modified cycloaliphatic epoxy resin system engineered for high-voltage insulators, bushings, and contact boxes (12–40.5 kV). Combining UL 94 V-0 flame resistance, extreme weather durability, and high thermal stability (Tg >150°C), this unfilled liquid resin delivers void-free insulation for outdoor power infrastructure. Compatible with Automatic Pressure Gelation (APG) and vacuum casting, it ensures superior dielectric strength (>18 kV/mm) and CTI >600 V for decades of reliable service.

Key Features & Benefits

Property Advantage
Weather Resistance Withstands UV, humidity, and pollution – ideal for outdoor bushings.
Flame Safety UL 94 V-0 certified – prevents fire propagation in electrical faults.
Thermal Performance High Tg (>150°C) + thermal shock resistance – stable under load cycles.
Electrical Integrity CTI >600 V, high dielectric strength – resists tracking/arcing.
Processing Flexibility APG or vacuum casting – integrates with existing production lines.
Long-Term Reliability Resists cracking, hydrolysis, and chemical corrosion.

Applications

  • 12–40.5 kV switchgear: Contact boxes, cable terminations

  • Outdoor bushings & insulators

  • Transformer bushings and surge arresters

  • Railway/utility power distribution insulation

Technical Specifications

Component Part Ratio (pbw) Form
Epoxy Resin LE-9265 100 Liquid (unfilled)
Anhydride Hardener LH-9265 100 Liquid
Silica Filler WY-12X 250–270 Optional
Color Paste LC Series 3 Optional

Cured Properties:

  • Glass Transition Temp (Tg): >150°C

  • Dielectric Strength: >18 kV/mm

  • Comparative Tracking Index (CTI): >600 V

  • UL 94 Rating: V-0

  • Thermal Shock Resistance: >1,000 cycles (-40°C to +125°C)

Processing Methods

  1. Automatic Pressure Gelation (APG):

    • Fast, low-waste production for high-volume insulator molding.

  2. Vacuum Gravity Casting:

    • Bubble-free encapsulation for complex bushing geometries.

Why Choose This System?

  • Weatherproof: Cycloaliphatic base resists yellowing/erosion in harsh environments.

  • Safety Compliance: Meets UL 94 V-0, IEC 60137, and ASTM D2303 standards.

  • Customizable: Adjust filler ratios (WY-12X) for viscosity/mechanical needs.

  • Zero Voids: Ensures partial discharge-free insulation for HV applications


Package Image


High Tg Flame Retardant Epoxy Encapsulant for Transformer Insulation & Protection

Shipment image


High Tg Flame Retardant Epoxy Encapsulant for Transformer Insulation & Protection


Example application image


High Tg Flame Retardant Epoxy Encapsulant for Transformer Insulation & Protection



Quality High Tg Flame Retardant Epoxy Encapsulant for Transformer Insulation & Protection for sale

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