Name: High-Temperature Epoxy Resin System for Electrical Insulation APG & Vacuum Casting
Brand: Shanghai Wenyou Industry Co., Ltd.
SKU: LE-9229/LH-9229
Price: 2.6 USD
Availability: InStock

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High-Temperature Epoxy Resin System for Electrical Insulation APG & Vacuum Casting

High-Temperature Epoxy Resin System

Electrical Insulation Epoxy Resin System

APG Epoxy Resin System

Place of Origin:

China

Brand Name:

WENYOU

Certification:

ISO/UL/REACH/RoHS/CE

Model Number:

LE-9229/LH-9229

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Product Details

Color:

Light Yellow, Transparent

Impact Strength:

High

Flexibility:

High

Tensile Strength:

50-60 MPa

Dielectric Strength:

≥ 25 KV/mm

Thermal Decomposition:

＞320°C

Insulation Resistance:

High

Moisture Resistance:

High

Payment & Shipping Terms

Minimum Order Quantity

200kg

Price

around $2.6

Packaging Details

pail

Delivery Time

7 days

Payment Terms

L/C,T/T,Western Union,MoneyGram

Supply Ability

200Ton/month

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008618018933365

Elliot.yang@sh-wysy.com

86-21-64308192

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Product Description

High-Temperature Epoxy Resin System for Electrical Insulation | APG & Vacuum Casting

Attribute	Value
Color	Light Yellow, Transparent
Impact Strength	High
Flexibility	High
Tensile Strength	50-60 MPa
Dielectric Strength	≥ 25 kV/mm
Thermal Decomposition	＞320°C
Insulation Resistance	High
Moisture Resistance	High

The LE-9229/LH-9229 epoxy resin system is a dual-component, modified rubber-toughened formulation designed for demanding electrical insulation applications. Combining LE-9229 epoxy resin and LH-9229 hardener at a precise 1:1 ratio (100 pbw each) with silica flour filler (280-340 pbw), this system delivers exceptional thermal stability (Tg 105-125°C), crack resistance, and mechanical strength. Ideal for medium/high-voltage insulation (10-35kV), it supports both automatic pressure gelation (APG) and vacuum casting processes, making it suitable for transformers, solid-pole bushings, and switchgear components.

Key Features & Advantages

Ultra-High Thermal Resistance:

Glass transition temperature (Tg): 105-125°C

Thermal decomposition: >320°C

Low water absorption: 0.08-0.20% (23°C to 100°C)
Superior Electrical Insulation:

Volume resistivity: 10¹⁵ Ω*cm

Dielectric strength: 30 kV/mm

Loss factor: 0.02
Robust Mechanical Properties:

Tensile strength: 65-95 MPa

Flexural strength: 110-150 MPa

Impact resistance: 10-18 kJ/m²
Process Flexibility:

Optimized for APG injection (10-30 min gelation) and vacuum casting (3-6 hr cure).

Low curing shrinkage (0.7-0.9%) ensures dimensional stability.

Technical Parameters

Component Properties

Epoxy Resin LE-9229	Hardener LH-9229
Appearance: Milky white, viscous liquid	Appearance: Pale yellow liquid
Viscosity at 25°C: 10.5-16.5 Pa.s	Viscosity at 25°C: 400-800 mPa.s
Density: 1.16-1.20 g/cm³	Density: 1.17-1.24 g/cm³
Flash Point: ~135°C	Flash Point: ~140°C

Cured System Performance

Mechanical	Value	Electrical/Thermal	Value
Tensile Strength	65-95 MPa	Volume Resistivity	10¹⁵ Ω*cm
Flexural Strength	110-150 MPa	Dielectric Strength	30 kV/mm
Compressive Strength	130-190 MPa	Thermal Conductivity	0.8-0.9 W/m*K
Impact Strength	10-18 kJ/m²	Loss Factor	0.02

Processing Guidelines

APG Injection	Vacuum Casting
Mix Temp: 40°C (1-2 hrs)	Mix Temp: 60°C (1-2 hrs)
Mold Temp: 130-150°C	Mold Temp: 80-100°C
Gel Time: 10-30 mins	Gel Time: 3-6 hrs
Post-Cure: 130-140°C × 6-10 hrs	Post-Cure: 130-140°C × 6-10 hrs

Frequently Asked Questions (FAQ)

Q1: What filler is recommended for LE-9229?

A: Use 400-mesh silica flour at 280-340 pbw to enhance mechanical strength and thermal conductivity.

Q2: Can LE-9229 withstand high-voltage environments?

A: Yes, its dielectric strength (30 kV/mm) and volume resistivity (10¹⁵ Ω*cm) make it ideal for 10-35kV insulation.

Q3: How does APG differ from vacuum casting?

A: APG uses pressure (0.5-5 bar) for rapid production (10-30 min gelation). Vacuum casting eliminates bubbles for precision parts but requires longer curing (3-6 hrs).

Q4: Is this system flame-resistant?

A: Yes, rated HB (4mm) and V1 (12mm) under flammability tests.

Tags：

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