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LE-9516/LH-9516 Transformer Epoxy Resin | Outdoor CT/VT | Electrical Insulation

LE-9516/LH-9516 Transformer Epoxy Resin | Outdoor CT/VT | Electrical Insulation

Place of Origin:

China

Brand Name:

WENYOU

Certification:

REACH/RoHS/UL/SGS/IOS

Model Number:

LE-9516/LH-9516

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Product Details
Viscosity:
200-500
Process:
APG & Vacuum Casting
Keywords:
Electric Epoxy Resin
Thermal Decomposition:
>320°C
Adhesion Strength:
Strong
Usage:
Electrical Insulation
Payment & Shipping Terms
Minimum Order Quantity
20KG
Price
2.3-2.85USD/KG
Packaging Details
iron barrels/drums
Delivery Time
within 10 days
Payment Terms
L/C,T/T
Supply Ability
50000BARELS/MONTH
Product Description
LE-9516/LH-9516 Transformer Epoxy Resin | Outdoor CT/VT | Electrical Insulation
Key Attributes
Viscosity 200-500
Process APG & Vacuum Casting
Thermal Decomposition >320°C
Adhesion Strength Strong
Primary Usage Electrical insulation
Formulation
LE-9516/LH-9516 Transformer Epoxy Resin | Outdoor CT/VT | Electrical Insulation 0
Component Designation Quantity
Epoxy resin LE-9516 100pbw
Hardener LH-9516 100pbw
Filler Silica 350-400pbw
Color paste LC- 3pbw
Performance Characteristics
  • Two-component saturated epoxy resin system (liquid at room temperature)
  • Compatible with APG injection and vacuum casting processes
  • Excellent UV resistance and thermal shock resistance
  • Superior environmental resistance and electromechanical performance
Physical and Chemical Properties
Resin LE-9516 Properties Curing Agent LH-9516 Properties
Property Unit Standard Property Unit Standard
Appearance Visual Transparent-yellow liquid Appearance Visual Transparent-yellow liquid
Epoxy value Eq/kg 4.0-4.5 Viscosity at 25℃ mPa.s 150-400
Viscosity at 25℃ mPa.s 500-1500 Density at 25℃ g/cm3 1.17-1.24
Density at 25℃ g/cm3 1.16-1.20 VP Pa About 0.5
VP at 25℃ Pa <0.01 Flash point About 140
Flash point About 135
Processing Parameters
Parameter Automatic Pressure Gelation Vacuum Casting
Mixing temperature 40℃/1-2h 50-60℃/1-1.5h
Feeding method Pressure (0.5-5bar) Vacuum (casting pot)
Mold temperature 130-150℃ 105℃/4-6h
Gelation time 10-50mins 80℃/4h+100℃/2h+120℃/2h
Post-curing 130-140℃×6-10h 130-140℃×6-10h
Gel Time Characteristics

LE-9516:LH-9516=100:100

Temperature Gel Time
120℃ 20-40mins
140℃ 9-18mins
160℃ 4-8mins
Mechanical and Physical Properties

Test system: Resin LE-9516 / curing agent LH-9516 / silica flour=100/100/400

Curing conditions: 120°C × 4hours +140°C × 8hours

Property Typical Results Property Typical Results
Tg(DSC) 60-80℃ Thermal decomposition temperature >320℃
Tensile strength 60-80N/mm2 Water absorption rate (23°C × 10 days) 0.10-0.20 %by wt.
Flexural strength 100-130N/mm2 Water absorption rate (100°C × 60 minutes) 0.08-0.15 %by wt.
Compressive strength 140-190N/mm2 Surface resistivity 1014 Ω
Impact strength 8-16kJ/m2 Volume resistivity 1015 Ω.cm
Curing shrinkage 0.8-1.0% Dielectric strength 31 kv/mm
Flame resistance (4mm) HB level Dielectric loss 0.02
Thermal conductivity 0.8-0.9W/mk
Key Features & Advantages
  • Outdoor Durability: Excellent UV, thermal shock, and weather resistance for long-term reliability
  • High Dielectric Strength: 31kV/mm insulation ensures safe operation in high-voltage applications
  • Thermal Stability: Withstands temperatures up to 320°C (thermal decomposition point)
  • Low Viscosity: Optimized flow (150-400 mPa*s at 25°C) for thorough component coverage
  • Fast Curing: Gel times as short as 4-8 minutes at 160°C for efficient production cycles
Applications
  • Encapsulation of outdoor CT/VT coils
  • Insulators for high-voltage transformers
  • APG injection-molded electrical components
  • Protective coatings for substation equipment
Frequently Asked Questions
Q: What curing methods are supported?
A: Compatible with APG injection (130-150°C) and vacuum casting (105-120°C).
Q: Is this resin suitable for indoor use?
A: Yes, but it's specifically optimized for outdoor durability (UV/weather resistance).
Q: What's the minimum order quantity?
A: 10KG with flexible drum packaging (20-1200KG options).
Q: Are custom formulations available?
A: Yes, technical parameters can be adjusted for specialized requirements.

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