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 Lost | <0.02% |
| Flammability | HB (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 Lost | <0.02% | Flammability | HB (UL94) |
| Brand Name | WENYOU | Model Number | LW-8229A/LW-8229B |
| Certification | ISO/REACH/RoHS/SGS/UL | Place of Origin | CHINA |
| High Light | H-Class Insulation Epoxy System ，APG Casting Epoxy System | ||
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.
| Feature | Advantage |
|---|---|
| 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) |
Built for critical HV insulation:
12-40.5kV contact boxes & insulators
Switchgear components
Current/voltage transformers
Encapsulation of relays & sensors
Grid infrastructure protection devices
*Cured system: LE-9215/LH-9215/Silica powder = 100:100:350*
| Property | Value | Standard |
|---|---|---|
| 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 |
| 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 |
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.
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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