"NDI elastomers are known as the 'king of wear resistance' in the polyurethane industry. They can work stably at -10℃~120℃ and have a life span of more than 2,000 hours.It has excellent properties such as high strength, high temperature resistance, and hydrolysis resistance. It is a top choice for mining equipment and demanding industrial fields. Although the cost is high, it can solve the key challenges under extreme working conditions."
NDI and Polyester Prepolymer has below advantage:
Excellent dynamic mechanical properties: excellent performance under high frequency and high dynamic loads, high resilience and low endogenous heat, suitable for heavy-duty and high-speed applications
Outstanding wear resistance and tear strength: its polyurethane elastomer has very little wear and high tear strength, and is suitable for easy-to-wear parts such as rubber rollers, wheels, and screens.
High mechanical carrying capacity: the tensile strength can reach 64 MPa, which is currently recognized as one of the high-performance elastomers, which is better than conventional MDI or TDI systems.
Good heat resistance: can work in an environment of 120℃ for a long time, suitable for high temperature conditions
Excellent oil resistance and cutting resistance: stable performance in petroleum, metallurgy, printing and other industries
nDI and Polyester based prepolymer processing technology and physical property
| Physical Properties | Unit | Numerical | ||||||
| NCO content | % | 3.3±0.2 | ||||||
| Appearance at 25℃ | Solid | |||||||
| Viscosity At 90℃, cps | 3600 | |||||||
| Processing Conditions | Prepolymer | BDO | ||||||
| Temperature,℃ | 90 | 40 | ||||||
| Gel time | min | 7 | ||||||
| Demold | ℃/min | 130/60 | ||||||
| Post cure | ℃/hours | 120/24 | ||||||
| Hardness | shoreA | 94±2 | ||||||
| Tensile strength | MPa | 44 | ||||||
| 100%Modulus | MPa | 7.8 | ||||||
| 300%Modulus | MPa | 13.8 | ||||||
| Elongation at break | % | 510 | ||||||
| Rebound | % | 58 | ||||||
| Tear Strength | kN/ cm3 | 116.00 | ||||||
| Compression set B(70℃,22 hours) | % | 21 | ||||||
Package
20kgs/drum; 200kgs/drum; 1000kgs/IBC.
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