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Brand Name : EXCEEDCHEM
Model Number : MDI based polyurethane preploymer Shore A88-90
Certification : ISO9001:2008
Place of Origin : China
MOQ : 1mt
Price : FOB Qingdao usd3.0/kg
Payment Terms : L/C, T/T
Supply Ability : 3000mt/month
Delivery Time : 5-8 work days
Packaging Details : 20kg/drum; 200kg/drum
Hardness : Shore A88-90
NCO : 5.0-5.20%
MOCA : 14.5%
Packing : 20kg/drum; 200kg/drum
Post vulcanization : 10hours
Base : MDI based prepolymer
MDI/Polyether Polyurethane Prepolymer Shore A88-90
1. Description
This is a MDI based polyether polyurethane prepolymer.
2. Characteristics
3. Applications
4. Typical properties
Type | Appearance | Viscosity(mPa.s/85℃) | NCO% | Packing(kg/drum) |
Liquid | 280-300 | 5.00-5.20 | 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 | 14.5 | 4-4.5 | 80/120 | 10 |
7. Finished products properties
Item | Hardness(Shore A) | Tensile strength(MPa) | Tear strength(KN/m) | Rebounding(%) |
Physical properties | 88-90 | 20-21 | 58-61 | 26 |
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MOCA 14.5% Rebond Glue MDI Based Polyurethane Images |