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Sieve Plate Shore A90 TDI 100 Polyurethane Prepolymer

Categories TDI Based Polyurethane
Brand Name: EXCEEDCHEM
Model Number: TDI-100/Polyester Polyurethane Prepolymer Shore A90
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
NCO%: 4.30-4.50
MOCA%: 12.5
Hardness: Shore A90
Base: TDI-100/ polyester based
Packing: 20kg/drum; 200kg/drum
Shelf life: 6months
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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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