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Test items | JTG/T 3364-02-2019 | [2006] No.274 | GB/T 19250-2013 | JC/T 975-2005 |
Epoxy resin I | Epoxy resin II | Methyl methacrylate | Reactive resin | Polyurethane | Polyurethane |
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Solid content (%) | — | — | ≥95.0 | — | Single: 85.0 | 98.0 |
Double: 92.0 |
Tensile strength (23°C) (MPa) | ≥1.0 | ≥3.0 | ≥12.0 | — | ≥6.0 | ≥2.45 |
Elongation at break (23°C) (%) | ≥10 | ≥100 | ≥130 | ≥20① | ≥450 | ≥450 |
Surface drying time (23°C) (h) | ≤0.5 | — | ≤0.5 | — | ≤12 | ≤4 |
Hard work time (23°C) (h) | ≤1.0 | — | ≤1.0 | — | ≤24 | ≤8 |
Impermeability | 0.3 MPa, 24 h impermeable | — | 0.3 MPa, 2 h impermeable | 0.3 MPa, 30 min impermeable |
Water absorption (%) | ≤0.3 | ≤0.3 | — | — | ≤5.0 | ≥0.2 |
Bonding strength (MPa) | ≥5.0 | ≥3.0 | ≥5.0 | ≥5.0 | ≥1.0 | ≥0.05 |
Shear strength (25°C) (MPa) | — | — | — | ≥3.0 | ≥0.2 (50°C) | ≥3.0 |
Low temperature flexibility (°C, no cracks) | — | — | −20 | −20 | −35 | −40 |
Hardness (shore hardness D) | — | — | 50–70 | — | 60 | — |
Impact resistance (1 kg, 50 cm) | — | — | No cracks | — | No cracks | — |
Heat resistance (°C) | — | — | — | — | — | 160°C without flowing and dripping |
Tear strength (N/mm) | — | — | — | — | 30 | — |
Aging at constant elongation | Heating aging | — | — | — | — | No crack and deformation | — |
Artificial climate aging | — | — | — | — | No crack and deformation | — |
Heat treatment (80°C, 168 h) | Tensile strength retention rate (%) | — | — | — | — | 80–150 | 80 |
Elongation at break (%) | — | — | — | — | ≥400 | ≥400 |
Low temperature flexibility | — | — | — | — | −30°C, no cracks | −35°C, no cracks |
Heating expansion rate (%) | — | — | — | — | — | ≤1.0 |
Mass loss | — | — | — | — | | ≤1.0 |
Alkali treatment (0.1% NaOH + Ca(OH)2, 168 h) | Tensile strength retention rate (%) | — | — | — | — | 80–150 | — |
Elongation at break (%) | — | — | — | — | ≥400 | — |
Low temperature flexibility | — | — | — | — | −30°C, no cracks | — |
Acid treatment (2% H2SO4, 168 h) | Tensile strength retention rate (%) | — | — | — | — | 80–150 | — |
Elongation at break (%) | — | — | — | — | ≥400 | — |
Low temperature flexibility | — | — | — | — | −30°C, no cracks | — |
Artificial climate aging (1000 h) | Tensile strength retention rate (%) | — | — | — | — | 80–150 | — |
Elongation at break (%) | — | — | — | — | ≥400 | — |
Low temperature flexibility | — | — | — | — | −30°C, no cracks | — |
Salt treatment | Tensile strength retention rate (%) | — | — | — | — | — | 80 |
Elongation at break (%) | — | — | — | — | — | ≥400 |
Low temperature flexibility | — | — | — | — | — | −35°C, no cracks |
Mass increase | — | — | — | — | — | ≤2.0 |
Impermeability after hot rolling | | | | | | 0.1 MPa, 30 min impermeable |
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