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Thermal Shock Resistant Epoxy Curing Agent for MV Switchgear Encapsulation & Protection

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Thermal Shock Resistant Epoxy Curing Agent for MV Switchgear Encapsulation & Protection

Brand Name : wenyou

Model Number : 8213

Certification : ISO9001, ISO14001, SGS, and UL

Place of Origin : China

MOQ : 20kg/pail as sample

Price : Negotiable

Payment Terms : T/T,L/C

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 : Dry-type transformers, 10-66kV current transformers, voltage transformers, and other related products

Application : Electrical insulators for medium and high voltage applications

Appearance of epoxy resin : Transparent viscous liquid

Appearance of hardener : Light yellow liquid

Viscosity at 25°C : 3000 - 6000mPa.s

Density at 25°C : 1.16 - 1.20g/cm3

Vapor Pressure at 25°C : ＜ 0.01Pa

Flash point : around 135°C

Description : Excellent transformer maker epoxy resin producer environment friendly chemicals

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Environmentally Friendly Epoxy Resin System for Transformers & MV Switchgears

LE-8213 Epoxy Resin + LH-8213 Hardener

Product Overview

LE-8213/LH-8213 is a saturated cyclic aliphatic epoxy resin system engineered for high-voltage electrical insulation. Designed for sustainability and extreme reliability, this two-component system delivers exceptional thermal shock resistance (-40°C to +150°C), low curing shrinkage, and UV/weather stability. Ideal for encapsulating MV switchgears, dry-type transformers, and critical grid components.

Key Features & Benefits

Property Performance
Thermal Resilience Withstands 1,000+ cycles (-40°C ↔ +150°C)
Electrical Safety Dielectric strength >18 kV/mm • Partial discharge <5 pC
Environmental Resistance UV stable • Moisture impermeable • Chemical inert
Processing Flexibility Low viscosity • Zero filler pre-mix • Room-temp liquid
Mechanical Integrity Compressive strength >120 MPa • CTE <45 ppm/K

Applications

  • Dry-Type Transformers (10-66 kV)

  • MV Switchgears: CTs, PTs, bushings, circuit breakers

  • Outdoor Electrical Components

  • Renewable Energy Infrastructure

Processing Methods

  1. Vacuum Gravity Casting

    • Optimal for complex geometries

    • Eliminates air pockets in windings

  2. Automatic Pressure Gelation (APG)

    • 50% faster cycle times vs. conventional casting

    • Precision molding for high-volume production
      Customizable to existing manufacturing workflows

Recommended Formulation

Component Material Ratio (pbw)
Epoxy Resin LE-8213 100
Hardener LH-8213 (Weather-resistant anhydride) 100
Filler Silica Powder 300-380
Colorant LC Series Paste As required

Critical Properties

Category Parameter Value
Electrical Volume Resistivity >1×10<sup>15</sup> Ω·cm

Comparative Tracking Index >600 V
Thermal Glass Transition Temp (T<sub>g</sub>) >125°C

Thermal Conductivity 0.7-1.1 W/m·K
Mechanical Flexural Strength >95 MPa

Curing Shrinkage <0.3%

Why Choose LE-8213/LH-8213?

  • Eco-Compliant: Halogen-free • Low-VOC formulation

  • Zero Defects: Void-free encapsulation for PD resistance

  • Lifecycle Efficiency: 30+ year service life in substations

  • Cost-Reduction: Minimizes downtime & maintenance

Optimized for grid resilience – Trusted by global manufacturers for switchgear insulation, transformer coils, and renewable energy systems requiring uncompromising dielectric performance under thermal cycling stress.


Quality Thermal Shock Resistant Epoxy Curing Agent for MV Switchgear Encapsulation &amp; Protection for sale

Thermal Shock Resistant Epoxy Curing Agent for MV Switchgear Encapsulation & Protection Images

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