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Table 2 Cure properties of filled and unfilled NBR and EPDM at 160 °C

From: Effect of graphene on polar and nonpolar rubber matrices

Composites

MH(dNm)

ML(dNm)

ΔM(dNm)

t90(min)

tS2(min)

CRI(min−1)

aNBR

29.4(−)

3.8(−)

25.6(−)

10.5(−)

2.3(−)

12.2(−)

aNBR-GO-0.1

29.5 (0.3%)

3.8(−)

26.7 (4.6%)

14.3 (36.2%)

2.4 (4.3%)

8.4(−31.1%)

aNBR-GO-0.5

35.5 (20.7%)

3.4(−10.5%)

32.1 (25.4%)

5.5(−47.6%)

3.1 (34.8%)

41.7 (241.8%)

aNBR-GO-1

37.6 (27.9%)

3.5(−7.9%)

34.1 (33.2%)

6.2(−41.0%)

3.9 (69.6%)

43.5 (256.6%)

aNBR-rGO-0.1

42.1 (43.2%)

3.7(−2.6%)

38.4 (50.0%)

4.5(−57.1%)

2.6 (13.0%)

52.6 (331.1%)

aNBR-rGO-0.5

38.2 (29.9%)

3.3(−13.2%)

34.9 (36.3%)

4.4(−58.1%)

2.7 (17.4%)

58.8 (382.0%)

aNBR-rGO-1

39.8 (35.4%)

3.6(−5.3%)

36.2 (41.4%)

4.3(−59.0%)

2.6 (13.0%)

58.8 (382.0%)

EPDM

46.7(−)

3.8(−)

42.9(−)

16.7(−)

6.8(−)

10.1(−)

EPDM-GO-0.1

48.7 (4.3%)

4.3 (13.2%)

44.4 (3.5%)

18.2 (9.0%)

6.6(−2.9%)

8.6(−14.9%)

EPDM-GO-0.5

48.9 (4.7%)

4.6 (21.1%)

44.3 (3.3%)

19.0 (13.8%)

7.3 (7.4%)

8.5(−15.8%)

EPDM-GO-1

49.0 (4.9%)

4.9 (28.9%)

44.1 (2.8%)

24.2 (44.9%)

7.5 (10.3%)

6.0(−40.6%)

EPDM-rGO-0.1

49.0 (4.9%)

4.2 (10.5%)

44.8 (4.4%)

16.0(−4.2%)

6.0(−11.8%)

10.0(−1.0%)

EPDM-rGO-0.5

50.6 (8.4%)

4.8 (26.3%)

45.8 (6.8%)

15.0(−10.2%)

5.2(−23.5%)

10.2 (1.0%)

EPDM-rGO-1

50.0 (7.1%)

4.9 (28.9%)

45.1 (5.1%)

18.0 (7.8%)

6.4(−5.9%)

8.6(−14.9%)

  1. NB the data MH: maximum torque, M L minimum torque, ΔM change in torque (MH-ML), t 90 optimum cure time, t s2 minimum cure time, CRI cure rate index (100/(t90-ts2)) for the aNBR-GO/rGO compounds were recalled from our earlier work (Mensah et al., 2014) for comparison