Product description
TDI Polyester Polyurethane Prepolymer is a type of polymer that is derived from polyester and contains reactive isocyanate groups.
Polyester TDI polyurethane prepolymer is castable polyurethane systems.Polyester based,TDI terminated, castable prepolymers.
Polyester based polyurethane prepolymer has the characteristics of good operability, wide hardness range, good wear resistance, excellent oil and abrasion resistance,resilience and excellent mechanical properties.
TDI Polyester Polyurethane Prepolymer offer advantages such as recyclability and reduced environmental impact, making them a preferred choice over conventional alternatives.
TDI Polyester Polyurethane Prepolymeris widely used in various industries for making miscellaneous polyurethane elastomer products such as rubber wheels, sieve plates, scrapers, sealing rings and tires.
| BQ3242 TDI Polyester Polyurethane Prepolymer | |||||
| Model | BQ3242 | ||||
| NCO/% | 4.3±0.2 | ||||
| Appecrance at 20℃ | white solid | ||||
| MOCA/100g Prepolymer /g | 12.5 | ||||
| Viscosity (85ºC)/mPa·s | 1400 | ||||
| Mixing temperature /ºC( Prepolymer /MOCA) | 80/120 | ||||
| Gel time /min | 4 | ||||
| Post vulcanization time (100ºC) /h | 10 | ||||
| Operation process: the curing agent is melted and mixed with the prepolymer at the same time, the mixing temperature is controlled at 75~85°C, the mold temperature is 120°C, and the vulcanization is 16h under 110°C | |||||
| BQ3242(ratio,by weight) | MOCA/ by weight | TMP/ by weight | Gel time /min | Hardness(Shore A) | Rebound / % |
| 100 | 12.5 | 0 | 7 | 92±2 | 30 |
| 100 | 9.5 | 1 | 10 | 90±2 | 31 |
| 100 | 8 | 1.5 | 15 | 85±2 | 27 |
| 100 | 6.5 | 2 | 17 | 80±2 | 25 |
| 100 | 5.1 | 2.5 | 27 | 75±2 | 28 |
| 100 | 3.6 | 3 | 35 | 70±2 | 32 |
| 100 | 2.9 | 3.3 | 50 | 65±2 | 28 |
| 100 | 2.1 | 3.5 | 60 | 60±2 | 22 |
| 100 | 0 | 4.1 | 80 | 55±2 | 17 |
Processing Procedure of TDI Polyester Polyurethane Prepolymer
the curing agent is melted and mixed with the prepolymer at the same time, the mixing temperature is controlled at 75~85°C, the mold temperature is 120°C, and the vulcanization is 16h under 110°C
Storage of the TDI Polyester Polyurethane Prepolymer
Store in a cool and dry place and use up as soon as possible after opening;
It should be sealed with nitrogen if it cannot be used up at one time;
The original storage period is six months.
Package:20kgs/drum;200kgs/drum
Packing of the Polyester Polyurethane Prepolymer
20kg or 200kg iron drum
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