Special properties polyurethane prepolymer High resilience and wear resistant

  • Brand:

    sinograce
  • Item NO. :

    HR-711,HR-712,HR-713
  • Payment:

    L/C、D/A、D/P、T/T、MoneyGram、Paypal Other.
  • Product Origin:

    China Anhui
  • Color:

    Waxy solid
  • Shipping Port:

    Shanghai And Other Ports
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Product Detail


Description

Special properties of polyurethane prepolymer with high resilience and wear resistance


Key features

The material has high resilience under high hardness.


Typical properties 

High resilience

HR-711

HR-712

HR-713

Prepolymer

Appearance (25℃)

Waxy solid

Waxy solid

Waxy solid

NCO Content(%)

4.5~5.0

7.5~8.5

8.5~9.5

Using Mixture Ratio (PHR)

13.0~14.5

7.6~8.6

8.6~9.7

Life in the Reaction Kettle  (75~78℃/min)

8~10

5~7

6~8

 

 

 

Physical properties of finished products

Hardness (Shore D)

90±5

95±5

90±5

Tensile strength (MPa)

48.2

57.2

57.7

Tearing Strength (kN/m)

112.0

135.7

143.5

Elongation at Break (%)

380

498

514

Rebound Rate (%)

55

58

58


Application

-It is mainly used in the production of polyurethane products with high hardness and good elasticity.


Usage method

Can be used for manual, but also suitable for the operation of pouring machine, chain extender is MOCA or other chain extender.


Attention

The prepolymer should be stored at low temperature and dry place, avoid the moisture and moisture when used.

After the opening of the prepolymer should be used up as soon as possible, if not exhausted with nitrogen seal.

The storage period of unopened prepolymer is three months.

If you want to add color paste or other materials, keep the water content below 0.1%, and consider the compatibility of additives.

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      Special properties polyurethane prepolymer High resilience and wear resistant
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