Low Viscosity Epoxy Resin System for Dry-Type Transformer Vacuum Casting
Price:
Pricing based on different products
MOQ:
20KG
Delivery Time:
7 working days
Brand:
WENYOU
Product Description
Flame Retardant Epoxy Resin Potting Compound for 10-35kV Electrical Insulation
Production Formulation
| Component | Material | Quantity | Notes |
|---|---|---|---|
| Epoxy resin | LE-8516 | 100 pbw | Modified saturated epoxy resin system |
| Hardener | LH-8516 | 100 pbw | Modified weather-resistant acid anhydride hardener |
| Filler | Silica Flour | 300-350 pbw | |
| Color paste | LC series | 3 pbw |
Material Properties
| Property | Unit | Value |
|---|---|---|
| Appearance | Visual | Transparent, light yellow, viscous liquid |
| Epoxy value | Eq/kg | 4.5-5.0 |
| Viscosity at 25°C | mPa.s | 500-1000 |
| Density at 25°C | g/cm3 | 1.16-1.20 |
| Vapour Pressure at 25°C | Pa | <0.01 |
| Flash point | °C | About 135 |
Processing Parameters
| Parameter | Automatic Pressure Gelation | Vacuum Casting |
|---|---|---|
| Epoxy/hardener mixture temperature | 40°C /1-2 hours | 50-60°C /1-1.5hours |
| Feeding process | Pressure (0.5-5bar) | Vacuum (casting pot) |
| Mold temperature | 130-150°C | 105°C / 4-6 hours |
| Gelation time | 10-30mins | 80°C/4 hrs+100°C/2hrs+120°C/2hrs |
| Post cure | 130-140°C*6-10 hrs | 130-140°C*6-10 hrs |
Cured Material Properties
| Property | Value | Property | Value |
|---|---|---|---|
| Glass transition temperature Tg (DSC) | 60-80°C | Thermal conductivity | 0.8-0.9W/mk |
| Tensile strength | 60-80N/mm² | Thermal decomposition | >320°C |
| Flexural strength | 100-130N/mm² | Water absorption (23°C*10days) | 0.10-0.20% by wt. |
| Compressive strength | 140-190N/mm² | Water absorption (100°C*60 mins) | 0.08-0.15% by wt. |
| Impact strength | 8-16kJ/m² | Surface resistivity | 10¹⁴Ω |
| Curing shrinkage | 0.8-1.0% | Volume resistivity | 10¹⁵Ω.cm |
| Flammability (4mm) | HB Class | Dielectric strength | 20-30kV/mm |
| Loss factor | 0.02 |
Storage Information
Store components in tightly sealed, dry original containers at 6-35°C. Shelf life corresponds to expiration date on label (normally 12 months). Partial emptied containers should be closed tightly immediately after use.
About Shanghai Wenyou Industry Co., Ltd.
Established in 2008, we are a professional epoxy resin company specializing in manufacturing, R&D, and sales of epoxy resin, curing agents, and related products. Our product range includes epoxy resin, flame retardant resin, curing agents, outdoor modifiers, toughening agents, epoxy paste, demoulding agents, and fillers.
Certified with ISO9001, ISO14001, SGS, and UL, our products comply with ROHS and REACH safety regulations. Our high-quality products are used in high voltage electrical insulation applications and are exported globally.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Shanghai Wenyou Industry Co., Ltd.
Location
No.8,Lane 328, Minle Rd. Fengxian 201419,Shanghai P.R.China
Contact Person
Hope