Shore A80 Odorless MDI Polyether Polyurethane
MDI/Polyether Polyurethane Prepolymer Shore A80 1. Description This is a MDI based polyether polyurethane prepolymer. 2. Characteristics Water resistance Low temperature resistance Mold resistance 3. Applications Roller Plate and bar Sealing ring 4. Typical properties Type Appearance Viscosity(mPa.s/85℃) NCO% Packing(kg/drum) Liquid 210-230 5.00-4.20 20/200 5. Operating Procedure First, the prepolymer should be preheated in 80-85℃. Second, after vacumming, the prepolymer is
MDI/Polyether Polyurethane Prepolymer Shore A80
1. Description
This is a MDI based polyether polyurethane prepolymer.
2. Characteristics
- Water resistance
- Low temperature resistance
- Mold resistance
3. Applications
- Roller
- Plate and bar
- Sealing ring
4. Typical properties
| Type | Appearance | Viscosity(mPa.s/85℃) | NCO% | Packing(kg/drum) |
| Liquid | 210-230 | 5.00-4.20 | 20/200 |
5. Operating Procedure
First, the prepolymer should be preheated in 80-85℃. Second, after vacumming, the prepolymer is to be mixed with melting MOCA evenly. Third, with degassing, casting into mould, and vulcanization,and then demould. Lastly, the finished product should be post vulcanized.
6. Reaction parameters
| Item | MOCA (%) | Gel time(min) | Mixing temperature(℃) | Post vulcanization(h) |
| Specification | 11.5 | 4 | 80/120 | 10 |
7. Finished products properties
| Item | Hardness(Shore A) | Tensile strength(MPa) | Tear strength(KN/m) | Rebounding(%) |
| Physical properties | 80 | 16-18 | 40-45 | 32 |
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