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High-Temperature Transformer Epoxy Resin with V1 Flammability H-Class Thermal Endurance and Pre-Mixed Fillers for APG Casting

High-Temperature Transformer Epoxy Resin with V1 Flammability H-Class Thermal Endurance and Pre-Mixed Fillers for APG Casting

high-temperature epoxy resin for electrical insulation

epoxy resin system for APG casting

transformer epoxy resin with vacuum casting

Lieu d'origine:

Chine

Nom de marque:

WENYOU

Certification:

ISO/REACH/RoHS/SGS/UL

Numéro de modèle:

LW-8229A/LW-8229B

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Détails de produit
Résistance à la rupture:
≥ 25 kV/mm
Cheminement de la résistance:
≥ 600 V
Constante diélectrique:
3.0-4.0 (50Hz)
Inflammabilité:
V1 (UL94)
Conditions de paiement et d'expédition
Quantité de commande min
20 kg par seau comme échantillon
Prix
Négociable
Détails d'emballage
20 kg par seau, 220 kg par baril, 1200 kg par réservoir
Délai de livraison
7 à 10 jours ouvrables
Conditions de paiement
LC, T/T, Western Union, MoneyGram
Capacité d'approvisionnement
Il y a beaucoup de matières premières en stock
Description de produit
Pre-Filled Epoxy System | V1 Flammability | HV Insulation (10-35kV) | APG/Vacuum Casting
Product Attributes
Attribute Value
Breakdown Strength ≥25 kV/mm
Tracking Resistance ≥600 V
Dielectric Constant 3.0-4.0 (50Hz)
Flammability V1 (UL94)
Product Description

The LW-8229A/LW-8229B is a pre-mixed, filler-loaded epoxy system designed for medium/high-voltage insulation (10-35kV). Combining modified BPA epoxy (LW-8229A) and anhydride hardener (LW-8229B) with integrated fillers, it delivers superior crack resistance, V1 flammability rating (UL94), and H-class thermal endurance (180°C). Optimized for vacuum casting and APG processes in transformers, CTs, and terminal posts.

Key Features & Advantages
Feature Advantage
Pre-Mixed Fillers Simplified processing, consistent dispersion
V1 Flammability Rating Enhanced fire safety for critical electrical components
Thermal Class H (IEC 60085) Stable performance up to 180°C
APG & Vacuum Casting Ready Flexible production integration
High Arc Resistance 181-198 sec (IEC 61621)
Low Water Absorption 0.10-0.20% (23°C/10d)
Dual-Process Compatibility Adapts to APG or vacuum workflows
Applications

Ideal for sealed electrical insulation:

  • 10-35kV terminal posts & bushings
  • Dry-type transformers & current transformers
  • Switchgear insulation components
  • HV sensor encapsulation
  • Grid protection devices
Key Performance Data

Cured system: LW-8229A/LW-8229B = 100:100 | Cure: 140°C*4h + 150°C*12h

Mechanical & Thermal Properties
Property Value Standard
Flexural Strength 90-130 MPa ISO 178
Tensile Strength 55-85 MPa ISO 527
Impact Strength 8-15 kJ/m² ISO 179
Glass Transition (Tg) 105-120°C ISO 11357-2
Thermal Conductivity 0.8-0.9 W/m*K ISO 8894-1
Decomposition Temp >320°C ASTM E2402
Electrical & Safety Properties
Property Value Standard
Breakdown Strength ≥25 kV/mm IEC 60243-1
Volume Resistivity 10¹⁵ Ω*cm IEC 62631-3-1
Tracking Resistance ≥600 V IEC 60112
Dielectric Constant 3.0-4.0 (50Hz) IEC 60250
Flammability V1 (UL94) UL94/GB/T2408
Hydrophobicity HC1 Class IEC 62073
Frequently Asked Questions (FAQ)
Q1: Are fillers pre-mixed in this system?
A: Yes! Both LW-8229A (resin) and LW-8229B (hardener) contain pre-dispersed fillers, ensuring uniform properties and reduced mixing complexity.
Q2: What curing cycle is recommended?
A: For vacuum casting:
Cure: 75°C/4-5h → 95°C/2h → 115°C/4-6h → Post-cure 150°C/12h
For APG: Post-cure 130-150°C/10-12h after molding.
Q3: Why choose V1 flammability over HB?
A: V1 rating offers superior fire resistance for high-risk applications like transformers and terminal posts, meeting stricter safety standards.
Q4: Is silica filler adjustable?
A: Fillers are pre-loaded. For custom ratios, contact Shanghai Wenyou for tailored solutions.

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