High-Temperature Epoxy Resin System for Electrical Insulation APG & Vacuum Casting
Price:
around $2.6
MOQ:
200kg
Delivery Time:
7 days
Brand:
WENYOU
Product Description
High-Temperature Epoxy Resin System for Electrical Insulation | APG & Vacuum Casting
| Attribute | Value |
|---|---|
| Color | Light Yellow, Transparent |
| Impact Strength | High |
| Flexibility | High |
| Tensile Strength | 50-60 MPa |
| Dielectric Strength | ≥ 25 kV/mm |
| Thermal Decomposition | ＞320°C |
| Insulation Resistance | High |
| Moisture Resistance | High |
The LE-9229/LH-9229 epoxy resin system is a dual-component, modified rubber-toughened formulation designed for demanding electrical insulation applications. Combining LE-9229 epoxy resin and LH-9229 hardener at a precise 1:1 ratio (100 pbw each) with silica flour filler (280-340 pbw), this system delivers exceptional thermal stability (Tg 105-125°C), crack resistance, and mechanical strength. Ideal for medium/high-voltage insulation (10-35kV), it supports both automatic pressure gelation (APG) and vacuum casting processes, making it suitable for transformers, solid-pole bushings, and switchgear components.
Key Features & Advantages
-
Ultra-High Thermal Resistance:Glass transition temperature (Tg): 105-125°CThermal decomposition: >320°CLow water absorption: 0.08-0.20% (23°C to 100°C)
-
Superior Electrical Insulation:Volume resistivity: 10¹⁵ Ω*cmDielectric strength: 30 kV/mmLoss factor: 0.02
-
Robust Mechanical Properties:Tensile strength: 65-95 MPaFlexural strength: 110-150 MPaImpact resistance: 10-18 kJ/m²
-
Process Flexibility:Optimized for APG injection (10-30 min gelation) and vacuum casting (3-6 hr cure).Low curing shrinkage (0.7-0.9%) ensures dimensional stability.
Technical Parameters
Component Properties
| Epoxy Resin LE-9229 | Hardener LH-9229 |
|---|---|
| Appearance: Milky white, viscous liquid | Appearance: Pale yellow liquid |
| Viscosity at 25°C: 10.5-16.5 Pa.s | Viscosity at 25°C: 400-800 mPa.s |
| Density: 1.16-1.20 g/cm³ | Density: 1.17-1.24 g/cm³ |
| Flash Point: ~135°C | Flash Point: ~140°C |
Cured System Performance
| Mechanical | Value | Electrical/Thermal | Value |
|---|---|---|---|
| Tensile Strength | 65-95 MPa | Volume Resistivity | 10¹⁵ Ω*cm |
| Flexural Strength | 110-150 MPa | Dielectric Strength | 30 kV/mm |
| Compressive Strength | 130-190 MPa | Thermal Conductivity | 0.8-0.9 W/m*K |
| Impact Strength | 10-18 kJ/m² | Loss Factor | 0.02 |
Processing Guidelines
| APG Injection | Vacuum Casting |
|---|---|
| Mix Temp: 40°C (1-2 hrs) | Mix Temp: 60°C (1-2 hrs) |
| Mold Temp: 130-150°C | Mold Temp: 80-100°C |
| Gel Time: 10-30 mins | Gel Time: 3-6 hrs |
| Post-Cure: 130-140°C × 6-10 hrs | Post-Cure: 130-140°C × 6-10 hrs |
Frequently Asked Questions (FAQ)
Q1: What filler is recommended for LE-9229?
A: Use 400-mesh silica flour at 280-340 pbw to enhance mechanical strength and thermal conductivity.
Q2: Can LE-9229 withstand high-voltage environments?
A: Yes, its dielectric strength (30 kV/mm) and volume resistivity (10¹⁵ Ω*cm) make it ideal for 10-35kV insulation.
Q3: How does APG differ from vacuum casting?
A: APG uses pressure (0.5-5 bar) for rapid production (10-30 min gelation). Vacuum casting eliminates bubbles for precision parts but requires longer curing (3-6 hrs).
Q4: Is this system flame-resistant?
A: Yes, rated HB (4mm) and V1 (12mm) under flammability tests.
Similar Products
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