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Abstract

The curing and mechanical properties of nitrile (NBR) and natural rubber (NR) blends were carried out. Two series of blends were prepared, i.e., NBR/SMR L and NBR/ENR 50 blends. Blends were prepared using a Brabender at a temperature of 60°C. Results indicate that the scorch time, t ₂ and cure time, t ₉₀ increase with increasing NBR content in both blends. In NBR/ENR 50 blends the increasing content of NBR increases the maximum elastic torque, torque difference, tan δ @ MH and viscous torque. However, in NBR/SMR L blends the opposite trend is observed for maximum elastic torque and torque difference. In both blends modulus at 100% elongation (M100) and at 300% elongation (M300) increases with increasing NBR content, whereas tensile strength and elongation at break show a decreasing trend.

Keywords

acrylonitrile butadiene rubber natural rubber blend curing characteristics mechanical properties

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References

1. Hess, W.M. , Vegvari, P.C. and Swor, R.A. 1985. Rubb. Chem. Technol., 58:351.

2. Tinker, A.J. and Jones, K.P. eds. 1998. Blends of Natural Rubber—Novel Techniques for Blending with Specialty Polymers, pp. 53, 54.

3. Gelling, I.R. 1985. Rubb. Chem. Technol., 58:86.

4. Branbury, J.H. and Perera, M.C.S. 1985. J. Appl. Polym. Sci., 30:3347.

5. Annual Book of ASTM Standards 1998. Vol. 09.01 Rubber, Natural and Synthetic—General Test Methods; Carbon Black. Designation D3184-89, ASTM, Philadelphia, pp. 454-456.

6. Annual Book of ASTM Standards 1998. Vol. 09.01 Rubber, Natural and Synthetic—General Test Methods; Carbon Black. Designation D412-98a, ASTM, Philadelphia, pp. 41-53.

7. Lewan, M.V. 1998. Blends of Natural Rubber—Novel Techniques for Blending with Specialty Polymers, edited by A.J. Tinker and K.P. Jones , Chapman & Hall, London, p. 52.

8. Poh, B.T. and Wong, K.W. 1998. J. Appl. Polym. Scien., 69:1301.

9. Coran, A.Y. 1964. Rubb. Chem. Technol., 37:689.

10.

10. Ismail, H. , Freakley, P.K. , Sutherland, I. and Sheng, E. 1995. Eur. Polym. J., 31:1109.

11.

11. Gelling, I.R. and Morrison, N.J. 1985. Rubb. Chem. Technol., 58:243.

12.

12. Nagdi, K. 1993. Rubber as an Engineering Material: Guideline for Users, Hanser Publishers, Munich, p. 114.

13.

13. DiMauro, P.J. 1991. Paper No. 28, presented at ACS Rubber Division Meeting, Toronto.

14.

14. Nielsen, L.E. 1964. J. Appl. Polym. Scien., 8, 511.

15.

15. Davies, C.K.L. , Wolfe, S.V. , Gelling, I.R. and Thomas, A.G. 1983. Polymer, 24:107.

16.

16. Gelling, I.R. 1985. Rubber Chem. Tech., 58:86.

Curing and Mechanical Properties of Nitrile and Natural Rubber Blends

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References