POLYESTER + MDI

Key feature

● Hardness: 70-95A

● Curing agent: 14BDO

● Good elasticity

● Good oil resistance

● Good mechanical property

Application
Bushes, Castor Wheels, Couplings, Conveyor Rollers, Cutting Boards, Fork-lift Tyres, Gears, Grading Screens, Pneumatic and Oil Seals, Scrapers, Skate Wheels, Wire Guides.
Introduction

"PU Casting Elastomer" urethane elastomer can be cured by reacting with a polyamine or a polyol hardener. The molding process is composed of pre-heating, degassing, mixing with a hardener, pouring into the mold, curing, demolding and post curing.

POLYESTER + MDI

 

CPU-MS-1070

CPU-MS-1080

CPU-MS-1090

CPU-MS-1095

Hardness (Shore A)

70 ± 3

80 ± 2

90 ± 2

95 ± 2

NCO Content (%)

5.7 ± 0.2

6.4 ± 0.2

7.9 ± 0.2

9.3 ± 0.2

Viscosity, Poise(100oC)

-

-

-

-

1.4 Butane Diol, (pph)

5.81

6.53

8.9

9.45

Working Temperature(Prepolymer) (oC)

100

100

100

100

Pot-Life (Min)

4.5

4.0

3.8

3.0

Tensile Strength (psi)

2900-3600

3100-4100

4600-5500

7100-8800

Elongation (%)

870-1010

740-960

650-870

560-730

Tear Strength (pli)

360-440

440-520

580-670

430-500

 

Notice: These values are based on the test of our present laboratory test specimens.