Polyurethane casters
Polyester prepolymer series
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Series introduction:
Polyester prepolymer products have good wear resistance and solvent resistance, strong load-bearing capacity, ultra-high tensile and tear strength, can be added with pigments to adjust the color, can be used to make heavy-duty wheels, electric forklift wheels, rollers, coating rollers, impellers, seals, screen plates, pipe cleaners and some polyurethane elastomer parts.
Technical indicators:
Model | D3130 | D3136 | D3140 | D3145 | |
Prepolymer properties | |||||
NCO Content ( % ) | 3.0±0.2 | 3.6±0.2 | 4.3±0.2 | 4.5±0.2 | |
25 ℃Appearance | White solid | White solid | White solid | White solid | |
Processing technology | |||||
MOCA Dosage ( g/100g Prepolymer) | 8.6 | 10.5 | 12.5 | 13 | |
Prepolymer temperature ( ℃ ) | 80 | 80 | 75 | 75 | |
MOCA Temperature ( ℃ ) | 115-120 | 115-120 | 115-120 | 115-120 | |
Gel time ( min ) | 12 | 9 | 8 | 7.5 | |
Post-curing time ( h/100℃ ) | 16 | 16 | 16 | 16 | |
Hardness (Shore A ) | GB/T 531.1 | 80±2 | 85±2 | 90±1 | 91±2 |
Model | D3150 | D3160 | |
Prepolymer properties | |||
NCO Content ( % ) | 5.0±0.2 | 6.0±0.2 | |
25 ℃Appearance | White solid | White solid | |
Processing technology | |||
MOCA Dosage ( g/100g Prepolymer) | 14.5 | 17.2 | |
Prepolymer temperature ( ℃ ) | 80 | 80 | |
MOCA Temperature ( ℃ ) | 115-120 | 115-120 | |
Gel time ( min ) | 6 | 5 | |
Post-curing time ( h/100℃ ) | 16 | 16 | |
Hardness (Shore A ) | GB/T 531.1 | 94 ± 2 | 96±2 |
Model | D3236 | D3243 | D3249 | D3260 | |
Prepolymer properties | |||||
NCO Content ( % ) | 3.6±0.2 | 4.3±0.2 | 4.9±0.2 | 6.0±0.2 | |
25 ℃Appearance | White solid | White solid | White solid | White solid | |
Processing technology | |||||
MOCA Dosage ( g/100g Prepolymer) | 10.6 | 12.5 | 14 | 17.2 | |
Prepolymer temperature ( ℃ ) | 80 | 80 | 75 | 75 | |
MOCA Temperature ( ℃ ) | 115-120 | 115-120 | 115-120 | 115-120 | |
Gel time ( min ) | 4 | 3.5 | 3 | 2 | |
Post-curing time ( h/100℃ ) | 16 | 16 | 16 | 16 | |
Hardness (Shore A ) | GB/T 531.1 | 86±2 | 90±2 | 94±2 | 97±2 ) 47D ) |