PTMEG TDI Polyurethane Prepolymer has the characteristics of good operability, wide hardness range, good resilience, wear resistance and excellent mechanical properties. PTMEG TDI Polyurethane Prepolymer is used to make miscellaneous polyurethane elastomer products such as high elastic rubber wheel, screen plate, rubber roller, sealing ring.
PTMEG TDI Polyurethane Prepolymer combines the low viscosity of PPG/TDI system, hydrolysis resistance of products, low-temperature and low-temperature smoothness, and resistance to mold, while also possessing excellent mechanical properties equivalent to polyester system, as well as its unique high elasticity.
Product Specifications
|
Model |
BQ8322 |
|
NCO content % |
6.0±0.2 |
|
State of matter at 20°C |
white waxy solid |
|
Hardener |
MOCA |
|
100g prepolymer curing agent dosage (g) |
17.7 |
|
Prepolymer/curing agent mixing temperature (°C) |
75/120 |
|
Viscosity at 85°C (mpa·s) |
500 |
|
Gel time (min) |
5-8 |
|
Post curing time (100℃/h) |
16 |
|
Hardness (Shore A) |
95±2 |
|
Tensile strength (mpa) |
45 |
|
100% modulus stress (mpa) |
11 |
|
300% modulus stress (mpa) |
20 |
|
Elongation at break (%) |
400 |
|
Right Angle Tear Strength (kN/m) |
105 |
|
Pants tear strength (kN/m) |
35 |
|
Rebound (%) |
40 |
|
Density at 25°C (g/cm3) |
1.13 |
|
DIN wear (mm3)
|
44 |
Packing and Storage
Packing:20Kg/drum, 200Kg/drum, IBC tank.
PTMEG TDI Polyurethane Prepolymer should be stored in a cool, dry place, avoiding moisture and high temperatures. The shelf life of unopened prepolymer is twelve months.
Operation
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