JT 8048 Clear Epoxy Resin System 100/80 pbw for Vacuum Casting and Electrical Insulation with 22-25 kV/mm Breakdown Strength
JT 8048 clear epoxy resin system is a liquid, latent, silica flour filled, hot-curing cast resin specifically formulated for vacuum casting processes and electrical insulation applications. This two-component system offers excellent impregnating performance with convenient processing characteristics.
- Long pot-life with short gel-time under high temperature
- Excellent mechanical and electrical properties
- Superior crack resistance for durable performance
- Compatible with conventional casting, pressure gelation, and automatic pressure gelation (APG) processes
Ideal for instrument transformers and dry type distribution transformers requiring reliable electrical insulation and structural integrity.
| Component | Property | Test Method | Value Range |
|---|---|---|---|
| JT 8048A Epoxy Resin | Aspect | Visual | Red paste |
| Viscosity at 40℃ | ISO2555:1989 | 2000 - 3500 Mpa.s | |
| Specific weight at 20℃ | ISO2811-2:1997 | 1.55 - 1.62 g/cm³ | |
| Filler content | % by weight | 47 - 52 | |
| JT 8048B Epoxy Hardener | Aspect | Visual | Red paste |
| Viscosity at 40℃ | ISO2555:1989 | 1500 - 3000 Mpa.s | |
| Density at 20℃ | ISO2811-2:1997 | 1.70 - 1.80 g/cm³ | |
| Filler content | % by weight | 52 - 58 |
| Parameter | APG Process | Conventional Vacuum Casting |
|---|---|---|
| Mixing Ratio | 100/80 pbw (JT 8048A/JT 8048B) | |
| Mould Temperature | 140 - 160°C | 70 - 100°C |
| Demoulding Times | 10 - 40 minutes | 5 - 8 hours |
| Cure Conditions | 4h at 130°C or 3h at 140°C | 12h at 130°C or 8h at 140°C |
| Property | Test Method | Value Range |
|---|---|---|
| Tensile strength | ISO R 527:1993 | 75 - 78 N/mm² |
| Elongation at break | ISO R 527:1993 | 1.0 - 1.5% |
| E modulus from tensile test | ISO R 527:1993 | 10000 - 12000 N/mm² |
| Flexural strength | ISO 178:2001 | 105 - 115 MPa |
| Glass transition temperature | ISO 11357-2:1999 | 85 - 95°C |
| Breakdown strength | IEC 60243-1, 50 Hz | 22 - 25 kV/mm |
| Density at 20°C | - | 1.65 - 1.75 g/cm³ |
Storage Conditions: Store components under dry conditions at 5-25°C in tightly sealed original containers. Shelf life corresponds to expiry date stated on label.
Important Notes: JT 8048B contains accelerator. Prolonged storage at high ambient temperatures results in undesirable viscosity increase and impaired system reactivity. The system is sensitive to moisture. Partly emptied containers must be resealed immediately.
- Wear protective clothing, gloves, and safety glasses during operation
- Use appropriate ventilation with 3-5 air changes per hour
- Follow first aid procedures for eye or skin contact
- Refer to Material Safety Data Sheets (MSDS) for detailed safety information
Hubei Jiangte Insulation Composite
No.219, Zhanghua Rd(N), Economic & Development Zone of Qianjiang City, Hubei Province, China
Tel: +86-728-6201068 | Fax: +86-728-6202066
Guangzhou Jiangte Insulation Composite
Rm606, DongHong International Plaza, No.113, Chebei Rd, Tianhe District, Guangzhou, China
Tel: +86-20-82320316 | Fax: +86-20-82315407
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.