PTMG TDI Series PU Prepolymer For PU Elastomer
PTMG/TDI series Polyurethane Pre-polymer A60- shore D60
PTMEG PU Pre-polymers
Application:It can be used to make rods, caster wheels, rollers, Sealing rings, sieve plates and other
polyurethane elastomers.
Characteristics:The finished products have good abrasion resistance, Water resistance, excellent mechanical properties, color regulating by adding pigment.
Process Points:After the performed polymer vacuum degassing in 80～85℃, blending with melted MOCA, vacuum
degassing, casting, vulcanization moulding. It is apply to manual or casting machine.
Storage:Store in a cool and dry place,If you can ’t use it up at a time, filling nitrogen gas and then sealing it. The storage time of original packing is 6 month.
Packing:20Kg/drum or 200Kg/drum
| Type | JY1219 | JY1225 | JY1235 | JY1242 | JY1250 | JY1261 |
| NCO content % | 1.9±0.2 | 2.5±0.2 | 3.5±0.2 | 4.2±0.2 | 5.0±0.2 | 6.1±0.2 |
| Appearance at 20℃ | Colorless or light yellow solid | |||||
|
MOCA/g (100g prepolymer) |
4.7(E300) | 7.4 | 10.3 | 12.4 | 14.8 | 18 |
| Viscosity (85℃) /mPa · s | 1600 | 750 | 820 | 700 | 450 | 300 |
| Mixing Temperature /℃ | 80/30 | 80/120 | 85/115 | 80/115 | 75/115 | 75/115 |
| Gel time/min | 14 | 18-26 | 12-18 | 10-16 | 8-12 | 5-8 |
| Post cure time(100 ℃)/h | 16 | 16 | 16 | 16 | 16 | 16 |
| Hardness(Shore A) | 62 | 75 | 85 | 91 | 93 | 95 |
| 100% Modulus /MPa | 2 | 3 | 4 | 7 | 9 | 10 |
| 300% Modulus /MPa | 4 | 6 | 10 | 18 | 19 | 20 |
| Tensile strength /MPa | 11 | 25 | 28 | 35 | 38 | 40 |
| Elongation at break/ % | 650 | 550 | 430 | 420 | 400 | 370 |
| Tear Strength (without Nick) | 50 | 53 | 75 | 90 | 105 | 110 |
| Rebound / % | 59 | 60 | 50 | 48 | 52 | 46 |
| Specific gravity (25℃) (g/ cm3) | 1.1 | 1.1 | 1.12 | 1.12 | 1.13 | 1.15 |
| Abrasion loss /mm³ | 50 | 60 | 50 | 48 | 52 | 46 |
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