Machine Parts Polyester Based Polyurethane Shore A80
TDI-100/Polyester Polyurethane Prepolymer Shore A80 1. Description This is a TDI-100 based Polyester polyurethane prepolymer. 2. Characteristics High oil resistance Abrasive resistance Good michanical performance 3. Applications Sieve plate Machine parts Sealing ring Roller 4. Typical properties Type Appearance Viscosity(mPa.s/85℃) NCO% Packing(kg/drum) Solid 2200-2400 3.00-3.20 20/200 5. Operating Procedure First, the prepolymer should be preheated in 80-85℃. Second, after
TDI-100/Polyester Polyurethane Prepolymer Shore A80
1. Description
This is a TDI-100 based Polyester polyurethane prepolymer.
2. Characteristics
- High oil resistance
- Abrasive resistance
- Good michanical performance
3. Applications
- Sieve plate
- Machine parts
- Sealing ring
- Roller
4. Typical properties
| Type | Appearance | Viscosity(mPa.s/85℃) | NCO% | Packing(kg/drum) |
| Solid | 2200-2400 | 3.00-3.20 | 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 | 8.7 | 12-13 | 85/120 | 10 |
7. Finished products properties
| Item | Hardness(Shore A) | Tensile strength(MPa) | Tear strength(KN/m) | Rebounding(%) |
| Physical properties | 80 | 45-47 | 65-70 | 38 |
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