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Shore A78 TDI 80 Polyurethane Prepolymer Sealing O-Rings Raw Material

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Shore A78 TDI 80 Polyurethane Prepolymer Sealing O-Rings Raw Material

Brand Name : EXCEEDCHEM

Model Number : TDI-80/Polyether Polyurethane Prepolymer Shore A78-80

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% : 2.80-2.95

MOCA% : 8-8.3

Base : TDI-80/Polyether

Hardness : Shore A78-80

Color : colorless liquid

Application : Roller, Plate and bar, Sealing ring

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Shore A78 TDI 80 Polyurethane Prepolymer Sealing O-Rings Raw Material

 

1. Description

 

This is a TDI-80 based polyether polyurethane prepolymer.

 

2. Characteristics

  • Water resistance
  • Low temperature resistance
  • Mold resistance

3. Applications

  • Roller
  • Plate and bar
  • Sealing ring

4. Typical properties

Type Appearance Viscosity(mPa.s/85℃) NCO% Packing(kg/drum)
  Liquid 250-280 3.5-3.7 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 10-10.3 5-6 85/120 10

 

 

7. Finished products properties

 

Item Hardness(Shore A) Tensile strength(MPa) Tear strength(KN/m) Rebounding(%)
Physical properties 78-80 9-10 40-45 48

 

Cast polyurethane elastomers provide advantages such as elasticity, a long service life and excellent wear resistance. Our polyurethane hot cast elastomers based on toluene diisocyanate (TDI) can be formulated with a wide range of mechanical properties including different hardness levels thanks to polyester- or polyether-based prepolymers.

Product Tags:

584 84 9 TDI 80 Polyurethane

      

Shore A78 TDI 80

      

584 84 9 TDI Polyurethane Prepolymer

      
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