POLYURETHANES

Three-component MDI Polyester Prepolymers

Three-component MDI Polyester Prepolymers

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Index

Shore Hardness


60A

65A

70A

75A

80A

85A

90A

95A

31165-B (g)

100

100

100

100

100

100

100

100

31165-A (g)

195.7

168.8

137.9

113.4

102.9

84.8

63

51.1

31165-C (g)

8.7

9.8

11.1

12.2

12.6

13.4

14.4

14.9

Catalyst (‰)

2-5

31165-A Temp (℃)

65-70

31165-B Temp (℃)

40-45

31165-C Temp (℃)

40-45

Mold Temp (°C)

110-120

After Cure (h/100°C)

According to the size of product

Pot Life (min)

7-10

7-10

7-10

5-7

5-7

3-5

3-5

3-5

Demold Time (min)

40

40

40

40

40

40

40

40

Tensile Strength (MPa)

35-37

36-38

36-38

38-40

38-43

42-47

43-48

47-50

100% Modulus (MPa)

1-2

2-3

2-3

2-4

3-5

5-7

6-8

8-10

300% Modulus (MPa)

2-4

5-8

7-9

9-12

11-14

13-16

14-17

17-20

Ultimate Elongation (%)

551-654

532-637

522-625

522-623

481-582

432-535

422-525

425-527

Tear Strength (without Nick) (KN/m)

36-44

42-54

52-63

65-78

72-87

86-98

92-104

104-120

Resilience (%)

50-51

47-50

45-47

44-46

42-44

40-42

38-40

36-38

DIN Abrasion (mm³)

≤35

≤38

≤40

≤40

≤40

≤50

≤52

≤52