Thermoset comparison
Epoxy (DGEBA, amine-cured) vs Vinyl ester
Every value below is a typical room-temperature figure with its source, test method and conditions — the same dataset that drives the calculators.
| Property | Epoxy (DGEBA, amine-cured) | Vinyl ester | Difference |
|---|---|---|---|
| Density | 1.2 g/cm³ | 1.12 g/cm³ | Epoxy (DGEBA, amine-cured) — 7% higher |
| Young's modulus E | 3.45 GPa | 3.2 GPa | Epoxy (DGEBA, amine-cured) — 8% higher |
| Tensile strength | 70 MPa | 86 MPa | Vinyl ester — 23% higher |
| Glass transition Tg | 120 °C | 120 °C | identical |
Where these numbers come from
- Daniel & Ishai, Engineering Mechanics of Composite Materials, 2nd ed.
- Ashland Derakane 411 epoxy vinyl ester resin datasheet
Typical room-temperature values for learning and preliminary design; grades vary widely and a supplier datasheet always overrides a textbook figure. Confirm against the datasheet before design work.