Shanghai Wenyou Industry Co., Ltd.
| Payment Terms | L/C,T/T,Western Union,MoneyGram |
| Supply Ability | Plenty of raw material in stock |
| Delivery Time | 7 -10 work days |
| Packaging Details | 20kg/pail, 220kg/barrel, 1200kg/tank |
| Breakdown Strength | ≥25 kV/mm |
| Tracking Resistance | ≥600 V |
| Dielectric Constant | 3.0-4.0 (50Hz) |
| Flammability | V1 (UL94) |
| Brand Name | WENYOU |
| Model Number | LW-8229A/LW-8229B |
| Certification | ISO/REACH/RoHS/SGS/UL |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C,T/T,Western Union,MoneyGram | Supply Ability | Plenty of raw material in stock |
| Delivery Time | 7 -10 work days | Packaging Details | 20kg/pail, 220kg/barrel, 1200kg/tank |
| Breakdown Strength | ≥25 kV/mm | Tracking Resistance | ≥600 V |
| Dielectric Constant | 3.0-4.0 (50Hz) | Flammability | V1 (UL94) |
| Brand Name | WENYOU | Model Number | LW-8229A/LW-8229B |
| Certification | ISO/REACH/RoHS/SGS/UL | Place of Origin | CHINA |
| High Light | high-temperature epoxy resin for electrical insulation ，epoxy resin system for APG casting ，transformer epoxy resin with vacuum casting | ||
| Attribute | Value |
|---|---|
| Breakdown Strength | ≥25 kV/mm |
| Tracking Resistance | ≥600 V |
| Dielectric Constant | 3.0-4.0 (50Hz) |
| Flammability | V1 (UL94) |
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.
| 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 |
Ideal for sealed electrical insulation:
Cured system: LW-8229A/LW-8229B = 100:100 | Cure: 140°C*4h + 150°C*12h
| 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 |
| 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 |
Company Details
Business Type:
Manufacturer,Exporter,Seller
Year Established:
2008
Total Annual:
15000000-25000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
Shanghai Wenyou Industry Co., Ltd.mainly engaged in the advanced materialsof MV and HV insulation products for indoorand outdoor use, both suitable for APG andvacuum casting. Our wide range of products includes epoxy resin, flame retardant resin, curing agents, outdoor modifiers, toughe... Shanghai Wenyou Industry Co., Ltd.mainly engaged in the advanced materialsof MV and HV insulation products for indoorand outdoor use, both suitable for APG andvacuum casting. Our wide range of products includes epoxy resin, flame retardant resin, curing agents, outdoor modifiers, toughe...
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