Qingdao Exceed Fine Chemicals Co.,Ltd
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High Performance and Rebounding Polyurethane System Special for Pulley Shore A85
1. Description
This is a double-component polyurethane system material. Part A is mixture of Polyether Polyol. Part B is MDI based prepolymer.
2. Characteristics
3. Applications
Skateboard wheel, Skating roller
4. Physical properties
| Item | Appearance | Viscosity(mPa.s/35℃) | Packing(kg/drum) |
| Part A | Solid | 800-900 | 20/200 |
| Part B | Liquid or Solid | 1400-1600 | 20/200 |
5. Operating procedure
Mix Part A and Part B evenly according to the mixing ratio. Pour part A and part B respectively to machine drum and then do the vacuuming. Cast mixture into mould to produce the fisnished product.
6. Reaction parameters
| Item | Ratio | Gel time(min) | Mixing temperature(℃) | Post vulcanization(h) |
| Part A/Part B | 1:1 | 2-5 | 50-60 | 10 |
7. Finished product properties
| Item | Hardness(Shore A) | Tensile strength(MPa) | Tear strength(KN/m) | Rebouding(%) |
| Specification | 85 | 37 | 50 | 75 |