THE EFFECT OF MONTMORILLONITE ON THE RHEOLOGICAL AND PHYSICO-MECHANICAL PROPERTIES OF A THERMOSETTING POLYMER COMPOSITE
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Abstract
The study investigates a thermosetting polymer filled with montmorillonite. Montmorillonite is a naturally occurring layered mineral with particle sizes ranging from 8 to 12 µm. The thermosetting polymer was DER-330 epoxy resin and FCH-S hardener. Rheological and physical-mechanical studies of the properties of epoxy resin modified with montmorillonite were carried out. Viscosity versus shear rate is shown for uncured pure epoxy resin and resin modified with montmorillonite particles at room temperature. At low shear rates, a significant effect of montmorillonite on the properties of the composite is observed. The low shear rate further allowed epoxy molecules to leak between the layers of montmorillonite platelets, causing swelling and increasing the distance between them. As the shear rate increased from 8 to 20 s-1, the percolation time of montmorillonite decreased, which affected the decrease in viscosity. When the shear rate increases above 20 s-1, no significant changes in viscosity occur; for both samples a monotonic line is observed on the graph. The addition of montmorillonite to epoxy resin changes the chemical composition of the composite, which leads to changes in rheological and physical-mechanical properties. The addition of montmorillonite retards gelation, which can affect processability, cure time, and final properties of the composite. Morphological studies were carried out to determine the degree of dispersion of montmorillonite particles in the polymer composite using a transmission electron microscope. The uneven distribution of montmorillonite particles predominated in all samples. Apparently this is due to the curing conditions of the polymer composite and insufficient dispersion time. Physical and mechanical studies were carried out on samples made of a composite with montmorillonite in comparison with samples from pure epoxy resin. The flexural strength of samples made from the resulting composite is comparable to the strength of samples made from pure epoxy resin. In turn, the viscosity increased by 170%.
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References
Duty C.E., Kunc V., Compton B., Post B., Erdman D., Smith R., Lind R., Lloyd P., Love L. (2017) Structure and mechanical behavior of big area additive manufacturing (BAAM) materials. Rapid Prototyp Journal, no. 23 (1), pp. 181–189. doi: 10.1108/RPJ-12-2015-0183 ISSN 13552546. DOI: https://doi.org/10.1108/RPJ-12-2015-0183
Kishore V., Ajinjeru C., Nycz A., Post B., Lindahl J., Kunc V., Duty C. (2017) Infrared Preheating to Improve Interlayer Strength of Big Area Additive Manufacturing (BAAM) Components. Additive Manufacturing, no. 14, pp. 7–12. doi: 10.1016/j.addma.2016.11.008. DOI: https://doi.org/10.1016/j.addma.2016.11.008
Xidas P.I., Triantafyllidis K.S. (2010) Effect of the type of alkylammonium ion clay modifier on the structure and thermal/mechanical properties of glassy and rubbery epoxy-clay nanocomposites, European Polymer Journal, vol. 46, no. 3, pp. 404–417. doi: 10.1016/j.eurpolymj.2009.11.004. DOI: https://doi.org/10.1016/j.eurpolymj.2009.11.004
Kiliaris P., Papaspyrides C.D. (2010) Polymer/layered silicate (clay) nanocomposites: an overview of flame retardancy. Progress in Polymer Science, vol. 35, no. 7, pp. 902–958. doi: 10.1016/j.progpolymsci.2010.03.001. DOI: https://doi.org/10.1016/j.progpolymsci.2010.03.001
Litchfield D.W., Baird D.G. (2006) The rheology of high aspect ratio nanoparticle filled liquids. The British Society of Rheology (electronic journal), pp. 1–60. Available at: https://www.researchgate.net/publication/265071718_The_rheology_of_high_aspect_ratio_nanoparticle_filled_liquids/citation/download.
Cai H., Li P., Sui G. et al. (2008) Curing kinetics study of epoxy resin/flexible amine toughness systems by dynamic and isothermal DSC. Thermochimica Acta, vol. 473, no. 1–2, pp. 101–105. doi: 10.1016/j.tca.2008.04.012.
Ray S.S., Okamoto M. (2003) Polymer/layered silicate nanocomposites: a review from preparation to processing. Progress in Polymer Science, vol. 28, no. 11, pp. 1539–1641. doi:10.1016/j.progpolymsci.2003.08.002. DOI: https://doi.org/10.1016/j.progpolymsci.2003.08.002
Cai H., Li P., Sui G. et al. (2008) Curing kinetics study of epoxy resin/flexible amine toughness systems by dynamic and isothermal DSC. Thermochimica Acta, vol. 473, no. 1–2, pp. 101–105. doi: 10.1016/j.tca.2008.04.012. DOI: https://doi.org/10.1016/j.tca.2008.04.012
Giannelis E.P., Krishnamoorti R., Manias E. (1999) Polymer-Silicate Nanocomposites: Model Systems for Confined Polymers and Polymer BrushesPolymers in Confined Environments. Advances in Polymer Science, vol 138, pp. 107–147. doi: 10.1007/3-540-69711-X_3. DOI: https://doi.org/10.1007/3-540-69711-X_3
Mohan T.P., Velmurugan R., Kumar M.R. (2005) Rheology and curing characteristics of epoxy-clay nanocomposites. Polymer International, vol. 54, no. 12, pp. 1653–1659. doi: 10.1002/pi.1897. DOI: https://doi.org/10.1002/pi.1897
Erofeev V.T., T.F. Elchishcheva, Preobrazhenskaya E.M., Makarchuk M.V. (2020) Research of new materials and approaches in additive technologies in the manufacture of prototypes in industrial design. SPCECI 2019. IOP Conference Series: Materials Science and Engineering, vol. 972, P. 012057. doi: 10.1088/1757-899X/ 972/1/012057. DOI: https://doi.org/10.1088/1757-899X/972/1/012057
Erofeev V.T., Elchishcheva T.F., Preobrazhenskaya E.M., Makarchuk M.V., Afonin V.V. (2020) Optimization of the Strength Characteristics of the Cellular Structure in Samples of Thermoplastic Polyester. SPCECI 2019. IOP Conference Series: Materials Science and Engineering, vol. 972, P. 012056. doi: 10.1088/1757-899X/972/1/012056. DOI: https://doi.org/10.1088/1757-899X/972/1/012056
Erofeev V.T., Elchishcheva T.F., Makarchuk M.V., Preobrazhenskaya E.M., Tingaev A.V. (2022) Properties of Samples from Polymer Materials Manufactured by the Additive Method. Solid State Phenomena (SSP) (29 July 2022), vol. 335, pp. 79–84 doi: 10.4028/p-6n2zb7. DOI: https://doi.org/10.4028/p-6n2zb7
Erofeev V.T., Ivlev V.I., Myshkin A.V., Yudin V.A., Elchishcheva T.F. etc. (2021) Mekhanicheskiye svoystva otverzhdennoy poliefirakrilatnoy smoly MGF-9 [Mechanical properties of cured polyester acrylate resin MGF-9] Izvestiya Vysshikh Uchebnykh Zavedenii, Seriya Teknologiya Tekstil'noi Promyshlennosti, no 6 (396), pp. 311–319. doi: 10.47367/0021-3497_2021_6_311. DOI: https://doi.org/10.47367/0021-3497_2021_6_311
Erofeev V.T., Elchishcheva T.F., Makarchuk M.V. (2022) Epoksidnyy kompozit s uglerodnymi strukturami v additivnoy tekhnologii izgotovleniya izdeliy dlya tekstil'noy promyshlennosti [Epoxy composite with carbon structures in additive technology for manufacturing products for the textile industry] Izvestiya Vysshikh Uchebnykh Zavedenii, Seriya Teknologiya Tekstil'noi Promyshlennosti, no 2 (398), pp. 346–354. doi: 10.47367/0021-3497_2022_2_346.
Pahomova E.G., Monastyrev P.V., Mishchenko E.S.,Yezerskiy V.A., Ivanov I.A., Balthazar A.D. (2019) House-building analysis when usi ng additive technologies: Classification, advantages and disadvanta ges, Journal of Applied Engineering Science, vol. 17, no 4, pp. 449–456. doi: 10.5937/jaes17-23635. DOI: https://doi.org/10.5937/jaes17-23635
Ezersky V.A., Monastyrev P.V., Ivanov I.A. (2019) The Analysis of The rmal Properties of a Wall Fragment Made with 3D Construction Te chnology, International Journal for Computational Civil and Structur al Engineering, vol. 15, no 4, pp. 34–47. doi: 10.22337/2 587-9618-2019-15-4-34-47. DOI: https://doi.org/10.22337/2587-9618-2019-15-4-34-47
Pakhomova E.G., Andrianov K., Zubkov A., Monastyrev, P. (2020) In fluence of thickness and granulometric composition of granular asp halt on its strength characteristics when placing into the road pave ment, Journal of Applied Engineering Science, vol. 18(2), pp.192–197, doi: 10.5937/jaes18-26311. DOI: https://doi.org/10.5937/jaes18-26311
Pakhomova E., Emelyanov S., Yartsev V., Danilov V., Monastyrev P. (2023) The Influence of Climatic Aging on the Performance of Woo d-Based Panels, Civil Engineering Journal (Iran), no. 9(6), pp. 1491 –1508, doi: 10.28991/CEJ-2023-09-06-015. DOI: https://doi.org/10.28991/CEJ-2023-09-06-015
Sakoshev Z.G., Blaznov A.N. (2022) Issledovaniye reologicheskikh i fiziko-mekhanicheskikh svoystv epoksidnykh sistem s otverditelyami raznoy prirody [Study of rheological and physical-mechanical properties of epoxy systems with hardeners of different nature] Plasticheskiye massy, no. 9-10, pp. 7–9. doi: 10.35164/0554-2901-2022-9-10-7-9. DOI: https://doi.org/10.35164/0554-2901-2022-9-10-7-9