POLYESTER + TDI

Key feature

● Hardness: 70-97A

● Curing agent: MOCA

● Hot casting

● 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 + TDI
 

CPU-PS-70A

CPU-PS-80A

CPU-PS-85A

CPU-PS-90A

CPU-PS-95A

CPU-PS-97A

Hardness (Shore A)

70 ± 2

80

83 ± 2

90 ± 2

95 ± 2

97 ± 2

NCO Content (%)

2.1~2.3

3.0~3.4

3.6~3.9

4.7~5.2

5.9~6.2

6.4~6.6

Viscosity(CPS/80oC )

105000±15000

57500±12500

60000±20000

35000±10000

7500±1500

17500±7500

Specific Gravity

1.13

1.14

1.15

1.15

1.2

1.7

PHR of MOCA (%)

6.3~7.0

9.0~10.0

10.88~11.8

14.2~15.1

18~19.5

19.33~20.0

Pot-Life (Min)

3-5

4-6

2.5-5

2-3

4-6

0-2

Curing Temp. (oC)

110

110

110

110

110

110

Demould: Post Cure (Hour)

1:8

1:8

1:8

1:8

1:8

1:8

100% Modulus(kgf/cm2)

20

29

60

68

90

95

300% Modulus(kgf/cm2)

31

49

117

171

175

177

Tensile Strength(kgf/cm2)

385

432

495

603

530

558

Elongation (%)

612

560

495

477

440

423

Tear Strength(kgf/cm)

41

56

99

99

100

108

Compression Set (%)

26

23

27

29

30

33

 

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