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NO. | Item | Unit | Parameter |
1 | Hardness | Shore A | >65 |
2 | Tensile strength | MPa | ≥12 |
3 | elongation | % | ≥300 |
4 | Tensile modulus | MPa | ≥5.5 |
5 | Brittleness temperature | ºC | <-38 |
6 | Bibulous rate | % | <0.5 |
7 | Air aging (70±1ºC,240 hours) | % | ≥95 |
8 | Alkali effect coefficient (20% alkali liquor,NaOH or KON) | ≥95 |










