Name: Low Shrinkage Thermal Shock Resistant High Dielectric Epoxy Potting Resin for Transformer Epoxy Resin Insulation
Brand: Shanghai Wenyou Industry Co., Ltd.
SKU: LW-8229A/LW-8229B
Price: 2.35 USD
Availability: InStock

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Low Shrinkage Thermal Shock Resistant High Dielectric Epoxy Potting Resin for Transformer Epoxy Resin Insulation

epoxy potting resin for electrical insulation

low shrinkage transformer epoxy resin

thermal shock resistant epoxy resin

Place of Origin:

CHINA

Brand Name:

WENYOU

Certification:

ISO/REACH/RoHS/SGS/UL

Model Number:

LW-8229A/LW-8229B

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Product Details

Breakdown Strength:

≥25 KV/mm

Tracking Resistance:

≥600 V

Dielectric Lost:

<0.02%

Flammability:

HB (UL94)

Highlight:

epoxy potting resin for electrical insulation

low shrinkage transformer epoxy resin

thermal shock resistant epoxy resin

Payment & Shipping Terms

Minimum Order Quantity

20kg/pail as sample

Price

Negotiable

Packaging Details

20kg/pail, 220kg/barrel, 1200kg/tank

Delivery Time

7 -10 work days

Payment Terms

L/C,T/T,Western Union,

Supply Ability

Plenty of raw material in stock

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Elliot.yang@sh-wysy.com

86-21-64308192

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Product Description

Epoxy System | H-Class Insulation | 12-40.5kV Applications | Vacuum/APG Casting

Product Attributes

Breakdown Strength	≥25 kV/mm
Tracking Resistance	≥600 V
Dielectric Lost	<0.02%
Flammability	HB (UL94)

Product Description

The LE-9215/LH-9215 is a high-performance epoxy system for medium/high-voltage electrical insulation (12-40.5kV). Featuring modified BPA epoxy resin (LE-9215) and anhydride hardener (LH-9215), it delivers exceptional thermal shock resistance, superior dielectric strength, and H-class thermal endurance (180°C). Optimized for vacuum casting and APG processes in contact boxes, insulators, and switchgear.

Key Features & Advantages

Modified BPA Epoxy + Anhydride Hardener	High mechanical strength + thermal stability
Adjustable Silica Filler (300-400 pbw)	Customizable viscosity/performance balance
Thermal Class H (IEC 60085)	Reliable operation up to 180°C
Dual-Process Compatibility	Seamless APG or vacuum casting integration
Low Curing Shrinkage (0.8-1.0%)	Precision dimensional stability
HB Flammability Rating (UL94)	Enhanced fire safety for electrical components
High Arc Resistance	181-198 sec (IEC 61621)

Applications

Built for critical HV insulation:

12-40.5kV contact boxes & insulators
Switchgear components
Current/voltage transformers
Encapsulation of relays & sensors
Grid infrastructure protection devices

Key Performance Data

Cured system: LE-9215/LH-9215/Silica powder = 100:100:350

Mechanical & Thermal Properties

Glass Transition (Tg)	105-120°C	ISO 11357-2
Flexural Strength	100-130 MPa	ISO 178
Compressive Strength	150-200 MPa	GB/T2567
Impact Strength	9-14 kJ/m²	ISO 179
Thermal Conductivity	0.4-0.8 W/m*K	ISO 8894-1
Water Absorption	<0.2% (100°C/60min)	ISO 62

Electrical & Safety Properties

Breakdown Strength	≥25 kV/mm	IEC 60243-1
Volume Resistivity	10¹⁵ Ω*cm	IEC 62631-3-1
Tracking Resistance	≥600 V	IEC 60112
Dielectric Loss	<0.02%	IEC 60250
Flammability	HB (UL94)	UL94/GB/T2408
Hydrophobicity	HC1 Class	IEC 62073

Frequently Asked Questions (FAQ)

Q1: What's the optimal silica filler ratio?

A: Adjust between 300-400 pbw - higher ratios enhance strength but increase viscosity.

Q2: How does this system handle thermal cycling?

A: Excellent thermal shock resistance due to low shrinkage (0.8-1.0%) and high Tg (105-120°C).

Q3: What curing process is recommended?

A: Vacuum Casting: Cure @70-80°C/3-5h -> 90-100°C/2-4h -> Post-cure 130°C/12h

APG: Post-cure @130-150°C/10-12h after molding.

Q4: Is color customization possible?

A: Yes! LC series color pastes can be added (3 pbw recommended).

Q5: Why choose HB flammability rating?

A: HB classification balances safety and cost for 12-40.5kV indoor applications.

Tags：

Low Shrinkage Thermal Shock Resistant High Dielectric Epoxy Potting Resin for Transformer Epoxy Resin Insulation

epoxy potting resin for electrical insulation

low shrinkage transformer epoxy resin

thermal shock resistant epoxy resin

epoxy potting resin for electrical insulation

low shrinkage transformer epoxy resin

thermal shock resistant epoxy resin

Low Viscosity High Dielectric Strength Epoxy Resin, Vacuum Pouring Epoxy Compound for Electrical Insulation

Transparent Tracking-Resistant Epoxy Resin System with V1 Flammability and H-Class Thermal Endurance for Outdoor Insulation

Low Partial Discharge Vibration-Resistant Epoxy Resin System for Crack-Proof Encapsulation in APG Molding of Transformers

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