CRYSTALLIZATION HEAT OF HIGH HEAT CONDUCTING POLYMER COMPOSITES BASED ON POLYETHYLENE FILLED WITH COPPER MICROPARTICLES


  • N.M. Fialko Institute of Engineering Thermophysics, National Academy of Sciences of Ukraine
  • R.V. Dinzhos Nikolaev National University. named after V.O. Sukhomlinskiy
  • R.V. Dinzhos Nikolaev National University. named after V.O. Sukhomlinskiy
  • N.C Koseva Institute of Polimers of the Bulgarian Academy of Sciences
Keywords: the heat of crystallization, high-heat conducting polymer microcomposites, copper microparticles, crystallization exotherms

Abstract

The results of experimental studies of the specific heat of crystallization of polymer composites based on polyethylene filled with copper microparticles are presented. Data concerning the effects on the crystallization heat of the studied composites on such factors as the mass fraction of the filler and the cooling rate of the composites from the melt are presented. The corresponding studies were performed with a change in the mass fraction of the filler from 0.3% to 4.0% and the cooling velocity of the microcomposite from the melt from 1 K/min to 20 K/min. It is shown that the specific heat of crystallization decreases significantly with increasing speed VT and the mass fraction of the filler ω. The results of the comparison of the values of the specific heat of crystallization of polymer microcomposite, obtained by a method based on the mixing of components in a dry form and in a polymer melt, are presented. It was established that the first of the indicated methods correspond to large values of the heat of crystallization.

References

1. Dolinsky А.А., Fialko N.M., Dinzhos R.V., Navrodska R.О. [Thermophysical characteristics of high heat conduction polymer micro- and nanocomposites], Promyshlennaya teplotekhnika [Industrial Heat Engineering], 2015. No 5. P.5–15. (Rus.)
2. Fialko N.M., Dinzhos R.V., Navrodska R.О. [Polymer micro- and nanocomposites as objects of thermophysical research for elements of heat and power equipment], Promyshlennaya teplotekhnika [Industrial Heat Engineering], 2017. No 2. P.36–45. (Rus.)
3. Fialko N., Dinzhos R., Navrodska R., Prokopov V., Sherenkovsky Ju., Meranova N. Thermalphysical properties of polymer micro- and nanocomposites. International journal for science, technics and innovations for the industry. International scientific journal «Machines. Technologies. Materials». Publisher: Scientific Technical Union of Mechanical Engineering. “Industry 4.0”, Sofia, Bulgaria, 2018, Issue 4, p.185–188. ISSN PRINT 1313-0226
4. Fialko N.M., Dinzhos R.V., Sherenkovskiy Ju.V., Meranova N.O., Navrodska R. О. [Heat conductivity of polymer micro and nanocomposites based on polyethylene in different methods of their production]. Promyshlennaya teplotekhnika [Industrial Heat Engineering], 2017. No 4. P. 21-26. (Rus.)
5 . Dinzhos R.V., Fialko N.M., Lisenkov Je.А. [Analysis of the thermal conductivity of polymer nanocomposites
filled with carbon nanotubes and technical carbon]. Zhurnal Nano I Elektronnoi Fiziki [Journal Nano and
Electronic Physics]. 2014. V6. No 1. 01015. 6pp. (Ukr.)
6. Dolinsky А.А., Fialko N.M., Dinzhos R.V., Navrodska R.О. [Thermophysical properties of polymer micro- and nanocomposites based on polycarbonate]. Promyshlennaya teplotekhnika [Industrial Heat Engineering],2015. No 2. P.12–19. (Rus.)
7. Fialko N.M., Dinzhos R.V., Meranova N.O., Sherenkovskiy Ju.V., Navrodska R. О. [Heat conductivity of polymer micro- and nanocomposites based on polycarbonate with different methods of their obtaining ].
Technologicheskie sistemy [Technological Systems]. 2018. No1(82). P. 64–69. (Rus.)
8. Dolinsky А.А., Fialko N.M., Dinzhos R.V., Navrodska R.О. [Influence of manufacturing methods polymer micro and nanocomposites on their thermophysical properties], Promyshlennaya teplotekhnika [Industrial Heat Engineering], 2015. No 4. P.5–12. (Rus.)
9. Dinzhos R.V., Lisenkov Je.А., Fialko N.M., Klepko V.V. [Influence of the method of entering the filler on the thermophysical properties of systems based on thermoplastic polymers and carbon nanotubes], Zhurnal Fiziki i Inzhenerii poverkhnosti [Journal of Surface Physics and Engineering]. 2014. V.12. No 4. P. 446–453. (Ukr.)
10. Dinzhos R.V., Lisenkov Je.А., Fialko N.M., [Features of heat conductivity of composites on the basis of thermoplastic polymers and aluminum particles], Zhurnal nano- ta elektronnoyi fizyky [Journal of Nano- and Electronic Physics]. 2015. V. 7. No 3. P. 03022-1 - 03022-5. (Ukr.)
11. Fialko N.M., Dinzhos R.V. [Thermophysical bases for the creation of polymer micro- and nanocomposites for energy equipment elements], Promyshlennaya teplotekhnika [Industrial Heat Engineering], 2015. No 7. P.172–175. (Rus.)
12. Dolinsky А.А., Fialko N.M., Dinzhos R.V., Navrodska R.О. [Temperature dependences of the heat conductivity coefficients of polymer micro and nanocomposites for heat exchange apparatuses], Promyshlennaya teplotekhnika [Industrial Heat Engineering], 2016. No 1. P.5–14. (Rus.)
13. Fialko N.M., Navrodska R.О.,Dinzhos R.V., Meranova N.O., Shevchuk S.I.[Efficiency of using polymer micro- and nanocomposites for heat exchangers of gas-gas type ], Promyshlennaya teplotekhnika [Industrial Heat Engineering], 2017. No 5. P. 12–18. (Ukr.)
14. Dolinsky А.А., Fialko N.M., Dinzhos R.V., Navrodska R.О. [Structure formation of polycarbonate polymer micro and nanocomposites in their crystallization processes.], Promyshlennaya teplotekhnika [Industrial Heat Engineering], 2015. No 3. P.5–15. (Rus.)
15. Fialko N.M., Dinzhos R.V., Navrodska R.О. [Influence of the type of the polymer matrix on the thermophysical properties and the structuring of polymer nanocomposites.], Tekhnologicheskiye sistemy [Technological Systems]. 2016. No3(76). P. 64–69. (Rus.)

Abstract views: 9
PDF Downloads: 15
Published
2019-05-17
How to Cite
Fialko, N., Dinzhos, R., Dinzhos, R., & Koseva, N. (2019). CRYSTALLIZATION HEAT OF HIGH HEAT CONDUCTING POLYMER COMPOSITES BASED ON POLYETHYLENE FILLED WITH COPPER MICROPARTICLES. Thermophysics and Thermal Power Engineering, 41(2), 19-26. https://doi.org/https://doi.org/10.31472/ttpe.2.2019.3
Section
Heat and Mass Transfer Processes and Equipment, Theory and Practice of Drying