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Sieve Plate Shore A90 TDI 100 Polyurethane Prepolymer

    Buy cheap Sieve Plate Shore A90 TDI 100 Polyurethane Prepolymer from wholesalers
     
    Buy cheap Sieve Plate Shore A90 TDI 100 Polyurethane Prepolymer from wholesalers
    • Buy cheap Sieve Plate Shore A90 TDI 100 Polyurethane Prepolymer from wholesalers

    Sieve Plate Shore A90 TDI 100 Polyurethane Prepolymer

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    Brand Name : EXCEEDCHEM
    Model Number : TDI-100/Polyester Polyurethane Prepolymer Shore A90
    Certification : ISO9001:2008
    Price : FOB Qingdao usd3.0/kg
    Payment Terms : L/C, T/T
    Supply Ability : 3000mt/month
    Delivery Time : 5-8 work days
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    Sieve Plate Shore A90 TDI 100 Polyurethane Prepolymer

    TDI-100/Polyester Polyurethane Prepolymer Shore A90

    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

    TypeAppearanceViscosity(mPa.s/85℃)NCO%Packing(kg/drum)
    Solid1300-15004.30-4.5020/200

    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


    ItemMOCA (%)Gel time(min)Mixing temperature(℃)Post vulcanization(h)
    Specification12.58-980/12010

    7. Finished products properties


    ItemHardness(Shore A)Tensile strength(MPa)Tear strength(KN/m)Rebounding(%)
    Physical properties9048-50100-10536

    8. Effects of heating the prepolymer
    The isocyanate(NCO) content of all prepolymers decrease with time and especially with exposure to heat. The table below shows the accumulated time taken at various temperatures to degrade prepolymers.
    Temperature/℃Time
    607 days
    703 days
    8036 hours
    9012 hours
    1008 hours

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