Characteristic:Good handle, hydrolysis resistance and cold resistance, high elasticity
Application: Cold resistance sole, marine fender, shock absorption mat
Typical properties of PU matrix
| Name of products | Appearance | Viscoscity (mPa·s/40℃) | Density (g·cm-³/40℃) | Package (kg) |
| A-7150 | Liqud | 1000-1400 | 1.01-1.02 | 18 |
| B-8260 | Yellowish Transparent liquid or waxy | 700-1100 | 1.08-1.2 | 20 |
Materials preheat
A-7150: preheated at 50-60℃ for 6-8 hours
B-8260: preheated at 50-60℃ for 8-12 hours
Typical processing parameters & Reaction parameter
| Items | A/B Materials Temperatures(℃) | Mix ratio A+C/B (By weight)
| Cream time (s) | End of Rise Time (s) | Free Rise Foam Density (g/cm³) | Mold Temperature (℃) | Demold Time (min) |
| Parameter | 40-45/38-42 | 100/94-95 | 9-11 | 60-70 | 0.25-0.30 | 45-55 | 5-7 |
The adding content of C-2 should be 240g±10g/18kg
The adding content of water should be 0-40g/18kg according to the reality
Physical properties
| Items | Molded Density (g/cm³)
| Hardness (Shore A)
| Tensile strength (Mpa)
|
Elongation (%)
| Tear strength (kN/m) | DIN abrasion (mm³) | Flexing resistance (Break length 4mm)(-20℃) |
| Physical properties
| 0.55-0.70 | 55-70 | 8.0-13.5 | 500-750 | 38-50 | 60-100 | 40000 times no increasing |
Demold time may be prolonged with the increse of sole thickness
These physical data are acquired by testing a sample of 6mm thick
Data listed above are just for reference.The data are subjected to practical production.If other requests for physical properties,please contact us.
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Product Categories : Polyurethane System For Shoe Sole > Polyurethane System For Shock Absorber
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