Title of the article

FORMATION OF STRUCTURE OF HIGHLY FILLED UHMWPE COMPOSITES UNDER CONDITIONS OF INTENSIVE MECHANICAL ACTIVATION FOR RADIATION PROTECTIVE MATERIALS

Authors

ZHORNIK Viktor I., D. Sc. in Eng., Assoc. Prof., Head of the Laboratory of Nanostructured and Superhard Materials, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

KOVALIOVA Svetlana A., Senior Researcher of the Laboratory of Nanostructured and Superhard MaterialsSenior Researcher of the Laboratory of Nanostructured and Superhard Materials, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus

GRIGORYEVA Tatyana F., D. Sc. in Chem., Leading Researcher of the Laboratory of Chemical Materials Science, Institute of Solid State Chemistry and Mechanochemistry of the Siberian Branch of the RAS, Novosibirsk, Russia

KISELEVA Tatyana Yu., D. Sc. in Phys. and Math., Associate Professor of the Department of Solid State Physics, Lomonosov Moscow State University, Moscow, Russia

BELOTSERKOVSKY Marat A., D. Sc. in Eng., Assoc. Prof., Head of the Laboratory of Gas-Thermal Methods of Machine Components Hardening, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

TARAN Igor I., Senior Researcher of the Laboratory of Gas-Thermal Methods of Machine Components Hardening1, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus

VALKOVICH Igor V., Researcher of the Laboratory of Nanostructured and Superhard Materials1, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus

VITYAZ Petr A., Academician of the NAS of Belarus, D. Sc. in Eng., Head of the Department of Mechanical Engineering and Metallurgy1, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus

LYAKHOV Nikolay Z., Academician of the RAS, D. Sc. in Chem., Chief Researcher, Lomonosov Moscow State University, Moscow, Russia

In the section TECHNOLOGICAL MECHANICS
Year 2019 Issue 4 Pages 70–78
Type of article RAR Index UDK 621.762.2 Index BBK  
Abstract The structural changes of the ultrahigh molecular weight polyethylene (UHMWPE) filled by 70 wt.% of the ultradisperse mechanocomposites Fe/M (M = HfC (12 об.%), TiC (26 об.%), TiB2 (27 об.%), B4C (51 об.%)) and activated by the treatment in the spherical ball mill, as well as when compacting of the filled mechanically activated polymer powder by hot pressing were studied by FTIR spectroscopy. It was shown that no significant changes occur in the molecular structure of unfilled UHMWPE during mechanical treatment with a low dose of mechanical energy (Dа ≤ 0.84 kJ/g). The change of the shape of powder particles is associated with the segmental mobility of macromolecules. The introduction of the filler leads to the formation of the interphase zone “polymer–filler” with a branched polymer structure. The degree of crystallinity (χ) of mechanically activated filled polymer powders with a dose Dа = 0.21 kJ/g is decreased relative to the mechanically activated unfilled UHMWPE with a dose Dа = 0.84 kJ/g from 44 to 25–40 vol.% depending on the nature of the filler. The oxidative destruction of the polymer during mechanical activation does not occur. The degree of crystallinity of UHMWPE of filled mechanically activated powders is increased to χ = 35–45 vol.% after hot pressing, but this value is 1.6 times lower than for the compacted unfilled UHMWPE. During hot pressing, the insignificant oxidation of the polymer occurs.
Keywords

mechanical activation, mechanocomposites, ultrahigh molecular weight polyethylene, filled polymers

   
Bibliography
  1. Kuznetsov S.A., Ivanov S.M., Volkov A.E., Terekhin P.N., Cherdyntsev V.V., Boykov A.A., Gorshenkov M.V. Analiz effektivnosti polimermatrichnykh kompozitov na osnove SVMPE s rentgenozashchitnymi napolnitelyami [Analysis of efficiency of polymer-matrix UHMWPE-based composites with X-ray fillers]. Sovremennye problemy nauki i obrazovaniya [Modern problems of science and education], 2013, no. 4.
  2. Gulbin V.N. Razrabotka kompozitsionnykh materialov, modifitsirovannykh nanoporoshkami, dlya radiatsionnoy zashchity v atomnoy energetike [Development of composite materials modified with nanopowders for radiation protection in nuclear engineering]. Yadernaya fizika i inzhiniring [Nuclear Physics and Engineering], 2011, vol. 2., no. 3, pp. 272–286.
  3. Kapitonov A.M., Redkin V.E. Fiziko-mekhanicheskie svoystva kompozitsionnykh materialov. Uprugie svoystva [Physical and mechanical properties of composite materials. Elastic properties]. Krasnoyarsk, Sibirskiy federalnyy universitet Publ., 2013. 533 p.
  4. Selyutin G.E., Gavrilov Y.Y., Voskresenskaya E.N., Zakharov V.A., Nikitin V.E., Poluboyarov V.A. Composite Materials Based on Ultra High Molecular Polyethylene: Properties, Application Prospects. Chemistry for Sustainable Development, 2010, vol. 18, no. 3, pр. 301–314.
  5. Pinchuk L.S., Zotov S.V., Goldade V.A., Vinogradov A.V., Okhlopkov A.A., Sleptsova S.A. Polyarizatsionnaya model uprochneniya termoplastov, soderzhashchikh ultradispersnye neorganicheskie napolniteli [Polarization model of strengthening of thermoplastic materials containing ultradisperse inorganic fillers]. Zhurnal tekhnicheskoy fiziki [Journal of technical physics], 2000, vol. 70, iss. 2, pp. 38–42.
  6. Pakhomov P.M., Korsukov V.Ye., Shablygin M.V., Novak I.I. Svyaz mezhdu mekhanicheskimi svoystvami i konformatsionnym sostavom polimerov [Relation between mechanical properties and conformational compositions of polymers]. Vysokomolekulyarnye soedineniya [High molecular compounds], 1984, vol. 26А, no. 6, pp. 1288–1293.
  7. Lebedev D.V., Ivankova E.M., Marikhin V.A., Myasnikova L.P., Seydewitz V. Stroenie poverkhnosti nastsentnykh chastits reaktornykh poroshkov sverkhvysokomolekulyarnogo polietilena [Surface structure of nascent particles of ultrahigh molecular weight polyethylene reactor powders]. Fizika tverdogo tela [Physics of the Solid State], 2009, vol. 51, iss. 8, pp. 1645–1652.
  8. Kovaliova S.A., Zhornik V.I., Kiseleva T.Yu, Grigoreva T.F., Vosmerikov S.V., Devyatkina E.T., Lyakhov N.Z. Mechanochemical synthesis of composite powders based on iron and highly dispersed titanium carbide. Proceedings of the 17th Bi-national israeli-russian Workshop “The Optimization of Composition, Structure and Properties of metals, Oxides, Composites nano- and amorphous materials”. Moscow, Yekaterinburg, 2018, pр. 91–97.
  9. Griffiths P., de Haseth J.A. Fourier transform infrared spectroscopy. Hoboken, John Wiley & Sons, Inc., 2007. 529 p.
  10. Del Fanti N.A. IR Spectroscopy of Polymers. Madison, ThermoFisher Scientific Corp., 2007. 162 p.
  11. Deev I.A., Buryndin V.G., Eltsov O.S., Stoyanov O.V. Raschet soderzhaniya kristallicheskoy, promezhutochnoy i amorfnoy oblastey polietilena i ego proizvodnykh po dannym Fure-IK spektroskopii [The calculation of the content of crystalline, intermediate and amorphous regions of polyethylene and its derivatives according to Fourier IR spectroscopy]. Vestnik Kazanskogo tekhnologicheskogo universiteta [Herald of Kazan Technological University], 2012, vol. 15, no. 13, pp. 152–157.
  12. Crystalline olefin polymers. Part II. New York, Interscience Publishers, 1965.
  13. Metody issledovaniya struktury i svoystv polimerov [Methods of research of structure and properties of polymers]. Kazan, Kazanskiy gosudarstvennyy tekhnologicheskiy universitet Publ., 2002. 604 p. 14. Buchachenko A.L. Strukturnye issledovaniya makromolekul spektroskopicheskimi metodami [Structural studies of macromolecules by spectroscopic methods]. Moscow, Khimiya Publ., 1980. 302 p.
  14. Okhlopkova A.L., Gogoleva O.V., Shits E.Yu. Polymeric composite materials for triboengineering applications based on superhigh molecular polyethylene and ultradispersed compounds. Journal of Friction and Wear, 2004, vol. 25, iss. 2, рp. 202–206.
  15. Vityaz P.A., Ilyushchenko A.F., Sudnik L.V. Funktsionalnye materialy na osnove nanostrukturnykh poroshkov gidroksida alyuminiya [Functional materials based on nanostructured aluminum hydroxide powders]. Minsk, Belaruskaya navuka Publ., 2010. 183 p.
  16. Baronin G.S., Stolin A.M., Pugachev D.V., Zavrazhin D.O., Kobzev D.E., Kozlukova Yu.O., Razinin A.K. Molekulyarnorelaksatsionnye i strukturno-mekhanicheskie kharakteristiki kompozitov na osnove sverkhmolekulyarnogo polietilena, poluchennykh zhidko- i tverdofaznoy ekstruziey [Molecularrelaxation and structure-mechanical characteristics of composites based on ultrahigh-molecular weight polyethylene produced by liquid- and solid-phase extrusion]. Fizika i tekhnika vysokikh davleniy [Physics and high pressure technology], 2009, vol. 19, no. 2, pp. 147–155.
  17. Kikutani T. Formation and structure of high mechanical performance fibers. II. Flexible polymers. Journal of Applied Polymer Science, 2002, vol. 83, pр. 559–571.
  18. Braginskiy R.P., Finkel E.E., Leshchenko S.S. Stabilizatsiya radiatsionno-modifitsirovannykh poliolefinov [Stabilization of radiation-modified polyolefins]. Moscow, Khimiya Publ., 1973. 200 p.