Product description
Quasi MDI POLYESTER prepolymer is used to produce Polyurethane sieves, PU rollers and other elastomer. It should be processed by mid-temperature casting machine.
The resulting product exhibits excellent resistance to wear and tear, along with impressive rebound properties. Moreover, its hardness can be tailored according to specific requirements by adjusting the ratio of components.
The color can be adjusted by pigment.
Application of Quasi MDI polyester prepolymer : automotive kits, pipe cleaners, polyurethane large or small product components , etc.
Advantage
The Quasi MDI polyester prepolymer has following advantages:
• Outstanding mechanical properties
• Adjustable reactivity through catalyst and mixture ratio selection
• Capable of casting large parts efficiently
• Viable alternatives to systems potentially affected by regulatory restrictions
• Reduced energy consumption for enhanced sustainability
characteristic
| Type | B66YPU-A | B66YPU-B | B6153DY-C | |||||
| NCO/% | 16.3±0.2 | |||||||
| Operation temperature /°C | 45 | 70 | 45 | |||||
| Viscosity mPa·s/ | 650 | 750 | 30 | |||||
| Prepolymer | B66YPU-A | |||||||
| Chain extender | B66YPU-B﹢B6153DY-C | |||||||
| Hardness /shore A | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 |
| B66YPU-A(ratio, by weight ) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| B66YPU-B(ratio, by weight ) | 190 | 170 | 150 | 120 | 100 | 80 | 60 | 40 |
| B6153DY-C(ratio, by wight) | 8.6 | 9.5 | 10.4 | 11.8 | 12.7 | 13.6 | 14.5 | 15.4 |
| Catalyst/total amount A+B+C % | 0.5 | 0.5 | 0.45 | 0.45 | 0.4 | 0.4 | 0.35 | 0.35 |
| Mold temperature/°C | 100 | |||||||
| Gel time/min | 6 | 6 | 5 | 4.5 | 4 | 4 | 3 | 3 |
| Open Mold Time/ min | 50 | 40 | 35 | 30 | 30 | 30 | 30 | 30 |
| Room temperature vulcanization/h | 6 | |||||||
| Post-curing time(100°C/h) | 16-24 | |||||||
Quasi MDI POLYESTER System Storage
Storage: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.
Packing
This Quasi MDI POLYESTER prepolymer Usually packed in 200kg/ iron drum
Quasi MDI polyester based prepolymers series: Durable with outstanding mechanical properties
Quasi MDI ester prepolymer systems provide exceptional abrasion and tear resistance, along with excellent resistance to chemicals such as hydrocarbons, oils, and solvents. These systems are ideal for a variety of applications, including screens, scrapers, PIGs, concrete blades, sheets, and vibratory bowls. Their remarkable resistance to solvents also meets the demands of squeegee applications.
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