An influence of conditions for obtaining the new coal tar pitch composite materials on their heat resistance and mechanical strength

Authors

DOI:

https://doi.org/10.15587/1729-4061.2015.42185

Keywords:

coal tar pitch, modification, filling, pitch composite, heat resistance, maximum bending stress

Abstract

Coal tar pitch is a valuable product of high-temperature pyrolysis of coal - a non-renewable natural resource; therefore, skilled use of coal tar pitch is an actual problem.

Coal tar pitch is a unique product with a rich set of properties, including polymer. Using and managing the polymer properties of pitch allows to better exploit the chemical potential of the coal tar pitch by creating new competitive composite materials on its basis that can replace more expensive polymer and metal materials.

Modifying the coal tar pitch by active polymer additives in the low-temperature region allows to adjust and change the pitch properties, improve its heat resistance and mechanical strength. Introducing the filler into the pitch-polymer matrix significantly improves the technological and operating properties of the pitch composite.

Studies have shown that the influence of temperature and time conditions for obtaining the composite material on its properties appears significant due to the thermochemical transformations and structural changes in the pitch-active additives-filler system.

Using the mathematical modeling method, optimal process conditions, which allow to obtain the pitch composite with the bending strength of 42MPa were determined.

The pitch composite, filled with asbestos refers to low-combustible materials, which is an undoubted advantage compared to many thermoplastic polymers.

Author Biography

В’ячеслав Юрійович Каулін, Donetsk National Technical University Shybankova Sq. 2, Krasnoarmiysk, Ukraine, 85300

Head Lecturer

The department of chemical technologies

References

  1. Krutko, I. H., Kaulin, V. Y. (2010). Teoretychni peredumovy vykorystannia kamianovuhilnoho peku yak polimernoho materialu. Naukovi pratsi DonNTU, seriia: Khimiia i khimichna tekhnologiia, 15 (163), 103–107.
  2. Crespo, J. L., Arenillas, A., Viña, J. A., García, R., Snape, C. E., Moinelo, S. R. (2005). Effect of the Polymerization with Formaldehyde on the Thermal Reactivity of a Low-Temperature Coal Tar Pitch. Energy & Fuels, 19 (2), 374–381. doi: 10.1021/ef0498768
  3. Kleshnya, G. G., Cheshko, F. F., Pityulin, I. N., Pakter, M. K. (2007). O vliianii termo-khimicheskoi obrabotki srednetemperaturnogo peka na khimicheskii sostav i strukturu elektrodnyh sviazuiushih. Uglekhimicheskii zhurnal, 6, 52–59.
  4. Kleshnya, G. G., Cheshko, F. F., Pityulin, I. N., Prokhach, E. B. (2007). Izmenenie gruppovogo sostava peka v protsesse termicheskoi obrabotki v prisutstvii khimicheski-aktivnoi dobavki. Uglekhimicheskii zhurnal, 6, 46–51.
  5. Malyi, E. I. (2007). Issledovanie vliyaniya polidispersnykh sistem aromaticheskogo sostava na formirovanie “uglerodistogo tela” pekovogo koksa. Metallurgicheskaia i gornorudnaia promyshlennost, 5, 15–18.
  6. Starovoit, A. G., Grinshpunt, A. G., Malyi, E. I., Koval, A. A. (2005). Issledovanie vliyaniia polimerov benzolnogo otdeleniia na tekhnologicheskie kharakteristiki kamennougolnogo peka. Metallurgicheskaia i gornorudnaia promyshlennost, 3, 15–16.
  7. Grzyb, B., Albiniak, A., Broniek, E., Furdin, G., Marêché, J. F., Bégin, D. (2009). SO2 adsorptive properties of activated carbons prepared from polyacrylonitrile and its blends with coal-tar pitch. Microporous and Mesoporous Materials, 118 (1-3), 163–168. doi: 10.1016/j.micromeso.2008.08.032
  8. Lin, Q., Li, J., Yang, Y., Xie, Z. (2010). Thermal behavior of coal-tar pitch modified with BMI resin. Journal of Analytical and Applied Pyrolysis, 87 (1), 29–33. doi: 10.1016/j.jaap.2009.09.007
  9. Lin, Q., Li, T., Ji, Y., Wang, W., Wang, X. (2005). Study of the modification of coal-tar pitch with p-methyl benzaldehyde. Fuel, 84 (2-3), 177–182. doi: 10.1016/j.fuel.2004.08.013
  10. Kaushik, S., Raina, R. K., Bhatia, G., Verma, G. L., Khandal, R. K. (2007). Modification of coal tar pitch by chemical method to reduce benzo(a)pyrene. Current Science, 93 (4), 540–544.
  11. Krutko, I. H., Kaulin, V. Y., Satsiuk, K. O. (2010). Reolohichni doslidzhennia modyfikovanykh kamianovuhilnykh pekiv. Naukovi pratsi DonNTU, seriia: Khimiia i khimichna tekhnologiia, 16 (184), 150–158.
  12. Krutko, I. H., Kaulin, V. Y., Satsiuk, K. O. (2012). Termichnyi analiz modyfikovanykh kamianovuhilnykh pekiv. Naukovi pratsi DonNTU, seriia: Khimiia i khimichna tekhnologiia, 19 (199), 133–138.
  13. Krutko, I., Kaulin, V., Satsiuk, K. (2013). Testing of modified coal tar pitch as polymer matrix in composite materials. Naukovi pratsi DonNTU, seriia: Khimiia i khimichna tekhnologiia, 2 (21), 161–167.

Published

2015-06-24

How to Cite

Каулін, В. Ю. (2015). An influence of conditions for obtaining the new coal tar pitch composite materials on their heat resistance and mechanical strength. Eastern-European Journal of Enterprise Technologies, 3(11(75), 29–35. https://doi.org/10.15587/1729-4061.2015.42185

Issue

Section

Materials Science