Effects of Curative Levels
All physical properties of Erapol elastomers are sensitive to curative level.
The curative level is often expressed as % Theory.
100% theory for example means the curative level used is the exact amount required to react with the prepolymer.
The table shows how Physical Properties vary with % Theory.
| Physical Property |
Change |
| Hardness | Remains unchanged between 85-100% theory . |
| Tensile Strength |
Maximum physical properties achieved between 90-95% theory. |
| Tear Strength |
Maximum properties at 100-105% theory. Significantly lower outside the range. |
| Abrasion Resistance |
Remains relatively unchanged between 85-105% theory. Slightly better at 100-105% theory. |
| Flex Life |
Maximum property at 100-105% theory. |
| Elongation | Maximum at 100-105% theory. |
| Compression set & heat resistance |
Best at 85-95% theory. |