Thermomechanical and Deformation Properties of Composites Based on the System of Dimethacrylate–Tetraethoxysilane
Background. The appearance of interphase interaction, the geometric limitations of the polymer polymerization space, the polymer free volume growth upon the addition of an inorganic component all affect the physicochemical and mechanical properties of the composites. However, the interrelation of the initial components with the composite properties is of an individual nature and requires experimental study.
Objective. The aim of the paper is the investigation of the effect of the composition of hybrid organo-inorganic composites (HOIC) based on the a,w-dimethacryloyl (tridietilenoksidtereftalat) (MGF-9) – tetraethoxysilane (TEOS) system on their thermomechanical and deformation properties and molecular structure.
Methods. Polymer-silica composites were prepared by the method of photoinitiated polymerization in the block using the laser interferometer and the sol-gel method. Thermomechanical analysis was performed on the device for determining the heat resistance of polymeric materials "Heckert" and the values of the characteristic parameters of the investigated composites of the MGF-9–TEOS system were calculated. The deformation properties of the composites were determined on the Heppler consistometer, calculating the parameter of the surface microhardness (conical point of fluidity).
Results. The dependence of the deformation and thermomechanical properties of composites on the ratio of the organic and inorganic components of the system was confirmed.
Conclusions. It is shown that the introduction of an inorganic filler into the polymer matrix improves the thermomechanical and deformation properties of the composites. It was established that the maximum thermomechanical stability and strength has the composition of MGF-9:TEOS = 90:10 % vol.
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O.A. Shylova and B.B. Shylov, “Nanocomposite oxide and hybrid organo-inorganic materials obtained by the sol-gel method. Synthesis, properties, application”, Nanosystems. Nanomaterials. Nanotechnologies, vol. 1, no. 1, pp. 9–83, 2003 (in Russian).
Ch. Pul and F. Ouens, Nanotechnology. Moscow, Russia: Tehnosfera, 2006 (in Russian).
К.М. Suhoj et al., Fundamentals of Sol-Gel Technology of Nanostructured Oxide and Hybrid Organic-Inorganic Materials. Dnipropetrovsk, Ukraine: GVUZ UGHТU, 2011 (in Russian).
D.O. Mishurov et al., “Nanocomposites based on polymers and layered siliсates”, Polimernyj Zhurnal, vol. 35, no. 3, pp. 217–230, 2013 (in Ukrainian).
A.D. Pomogajlo, “Hybrid polymer-inorganic nanocomposites”, Uspehi Himii, vol. 69, no. 1, pp. 60–89, 2000 (in Russian).
Z. Hua et al., “Polymer/silica nanocomposites: preparation, characterization, properties and applications”, Chem. Rev., vol. 108, no. 9, pp. 3893–3957, 2008. doi: 10.1021/cr068035q
G. Hovanec' et al., “Kinetic features of photoinitiated polymerization in the synthesis of polymer-silica composites”, Visnyk L’vivskogo Universytetu. Ser. Khimichna, vol. 56, no. 2, pp. 371–376, 2015 (in Ukrainian).
G.I. Hovanec' et al., “Thermal stability of organic-inorganic nanocomposites based on the dymethacrylate-tetraethoxysilane system and their kinetic features”, Polimernyj Zhurnal, vol. 38, no. 3, pp. 211–217, 2016 (in Ukrainian).
V.P. Zakordons'kyj et al., Methodical Instructions for the Study of Polymer Rheology. L’viv, SU: LDU, 1988 (in Ukrainian).
B.Ja. Tejtel'baum, Thermomechanical Analysis of Polymers. Moscow, SU: Nauka, 1979 (in Russian).
G. Hovanec' et al., “Synthesis and thermomechanical properties of polymer-siliceous composites”, Visnyk L’vivskogo Universytetu. Ser. Khimichna, vol. 55, no. 2, pp. 432–441, 2014 (in Ukrainian).
G.I. Hovanec', “Kinetic regularities of photoinitiated polymerization of mono- and di(meth)acrylates to deep conversions”, Ph.D. dissertation, Dept. PhChFF, InPOCC NAS of Ukraine, L’viv, Ukraine, 2009 (in Ukrainian).
S. Zhyl'cova, “Epoxy-siloxane nanocomposites of anhydrite hardening, retained by the sol-gel method”, Visnyk Doneckogo Universytetu. Ser. A. Pryrodnychi Nauky, vol. 1, pp. 144–151, 2014 (in Ukrainian).
V.P. Zakordonskyj et al., “Thermochemical and kinetic features of epoxy-amine coating curing with fillers”, Kompozicionnye Polimernye Materialy, vol. 43, no. 25, pp. 25–29, 1989 (in Russian).
V. Zakordonskyj et al., “Forming processes and thermomechanical properties of filled epoxy polymers”, Visnyk L’vivskogo Universytetu. Ser. Khimichna, vol. 43, pp. 190–198, 2003 (in Ukrainian).
Y.V. Dolbyn et al., Structural Stabilization of Polymers: Fractal Models. Moscow, Russia: Akademija Estestvoznanija, 2007 (in Russian).
C.S. Yvanchev et al., “Preparation of nanocomposites by hydrolysis of alkoxysilanes in a polypropylene matrix”, Vysokomolekuljarnye Soedinenija. Ser. A, vol. 44, no. 6, pp. 996–1002, 2002 (in Russian).
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