SWANCOR 978 is a tackifying vinyl ester resin suitable for SMC (Sheet Molding Compound), BMC (Bulk Molding Compound), and HSMC (High Strength Molding Compound). It offers excellent chemical resistance and mechanical properties.It is widely used in sports equipment, automotive parts, and corrosion-resistant molded materials.
Specifications
| Appearance | Brownish-yellow liquid |
| Solid Content | 59.5 ± 1.5% |
| Viscosity*1 | 1950 ± 250 cps |
| Acid value | 20 ± 5 mg KOH/g |
| SPI gelation time*2 | 32 ± 8 minutes |
| Exothermic Temperature* | ≥130°C |
| Moisture content | <0.02% |
| Shelf Life | 4 months (below 25 °C) |
*2 98% BPO: 1.0%, 82°C
Cast Body Properties (4 mm pure resin cast plate)*3
| Tensile Strength | 61–82 MPa | ISO 527-2 / GB/T 2567 |
| Tensile modulus | 3.1–3.5 GPa | ISO 527-2 / GB/T 2567 |
| Elongation at break | 2–4% | ISO 527-2 / GB/T 2567 |
| Flexural strength | 108–130 MPa | ISO 178 / GB/T 2567 |
| Modulus of bending | 3.0–3.7 GPa | ISO 178 / GB/T 2567 |
| Heat Deflection Temperature | 100–105°C | ISO 75 / GB/T 1634 |
| Volumetric shrinkage | 8–9% | ISO 3521 |
| Barcol hardness | 30–40 | GB/T 3854 |
Packaging, Storage, and Handling
- SWANCOR 978 is packaged in 55-gallon steel drums weighing 200 kg each, or in 5-gallon steel drums weighing 20 kg each.
- Store in a cool place and avoid direct sunlight.
- Flammable liquid; keep away from sources of ignition.