I. Features: |
two purposes: |
TECHNICAL INDEXES | |||||||
Items |
Tensile strength |
Elongation at break |
Abrasion |
Hardness shore |
Ozone deteridration |
||
Mpa | % | mm3 | A ° | ||||
Cover |
Physical property |
Before aging | 14.0 | 400 | 250 | 55-70 | No cracks |
After aging | 12.0 | 340 | - | 60-75 | - | ||
Acid and alkali resistance |
Class |
Soak liquid |
Density |
Soak conditions |
Change rate before and after aging |
||
oC × h | Swelling rate | Change rate of tensile strength | |||||
A1 | HCL | 18% | 50oC × 96h | <+10% | <-10% | ||
A2 | H2SO4 | 50% | 50oC × 96h | <+10% | <-10% | ||
A3 | NaOH | 48% | 50oC × 96h | <+10% | <-10% |
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