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Sieve Plate Shore A90 TDI 100 Polyurethane Prepolymer

Product Details

Place of Origin: China

Brand Name: EXCEEDCHEM

Certification: ISO9001:2008

Model Number: TDI-100/Polyester Polyurethane Prepolymer Shore A90

Payment & Shipping Terms

Minimum Order Quantity: 1mt

Price: FOB Qingdao usd3.0/kg

Packaging Details: 20kg/drum; 200kg/drum

Delivery Time: 5-8 work days

Payment Terms: L/C, T/T

Supply Ability: 3000mt/month

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Highlight:

Shore A90 TDI 100 Polyurethane

,

Sieve Plate TDI 100

NCO%:
4.30-4.50
MOCA%:
12.5
Hardness:
Shore A90
Base:
TDI-100/ Polyester Based
Packing:
20kg/drum; 200kg/drum
Shelf Life:
6months
NCO%:
4.30-4.50
MOCA%:
12.5
Hardness:
Shore A90
Base:
TDI-100/ Polyester Based
Packing:
20kg/drum; 200kg/drum
Shelf Life:
6months
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

Type Appearance Viscosity(mPa.s/85℃) NCO% Packing(kg/drum)
  Solid 1300-1500 4.30-4.50 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 12.5 8-9 80/120 10

 

 

7. Finished products properties

 

Item Hardness(Shore A) Tensile strength(MPa) Tear strength(KN/m) Rebounding(%)
Physical properties 90 48-50 100-105 36

 

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
60 7 days
70 3 days
80 36 hours
90 12 hours
100 8 hours

 

Sieve Plate Shore A90 TDI 100 Polyurethane Prepolymer 0