JOYWAY INDUSTRIAL COMPANY LIMITED
Quality Polyurethane, Exceptional Screens, One-stop service
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MDI series Polyurethane Pre-polymer A60- shore D60
| Type | JY3345 | JY3360 | JY3380 | JY3580 | JY3268 |
| NCO content % | 4.5±0.2 | 6.0±0.2 | 8.0±0.2 | 8.0±0.2 | 6.8±0.2 |
| Appearance at 20℃ | Colorless or light yellow solid | ||||
| Curing agent/g (100g prepolymer) | 4.7(E300) | 6.3(E300) | 8.4(E300) | 8.4(E300) | 7.1(E300) |
| Viscosity (85℃) /mPa · s | 1500 | 1200 | 800 | 600 | 850 |
| Mixing Temperature /℃ | 85/35 | 80/35 | 80/35 | 80/35 | 80/40 |
| Gel time/min | 9-18 | 8-16 | 6-15 | 6-15 | 13 |
| Post cure time(100 ℃)/h | 16 | 16 | 16 | 16 | 16 |
| Hardness(Shore A) | 68 | 82 | 93 | 90 | 88 |
| 100% Modulus /MPa | 3 | 6 | 7 | 8 | 5 |
| 300% Modulus /MPa | 8 | 12 | 14 | 15 | 12 |
| Tensile strength /MPa | 18 | 28 | 30 | 38 | 35 |
| Elongation at break/ % | 650 | 600 | 570 | 590 | 460 |
| Tear Strength (without Nick) | 75 | 98 | 102 | 119 | 95 |
| Rebound / % | 45 | 40 | 40 | 41 | 66 |
| Specific gravity (25℃) (g/ cm3) | 1.23 | 1.25 | 1.26 | 1.18 | 1.1 |
| Abrasion loss /mm³ | 50 | 35 | 40 | 32 | 42 |