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Item | Technical indicators | ||
I | II | ||
Tensile strength | ≥1.0MPa | ≥1.5MPa | |
Drying time | Surface dryness | ≤4H | |
Overall dryness | ≤8H | ||
Solid content | ≥65% | ||
Impermeability | 0.3MPa, Watertight for 30 minutes | ||
Elongation at break | ≥300% | ||
Heating expansion ratio | Elongation | ≤1.0 | |
Shorten | ≤1.0 | ||
Tensile strength retention after treatment | Heat treatment | ≥80% | |
Alkali treatment | ≥60% | ||
Acid treatment | ≥40% | ||
Artificial weathering treatment | - | ≥80~150% | |
Elongation at break after treatment | Heat treatment | ≥200% | |
Alkali treatment | |||
Acid treatment | |||
Artificial weathering treatment | - | ≥200% |
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