THE INFLUENCE OF ORGANIC FIBER CONTENT IN THE EPOXIDE BINDER ON ADHESIVE AND COGESIVE STRENGTH OF THE TRANSPORT TECHNICAL COATINGS
https://doi.org/10.33815/2313-4763.2019.1.20.141-150
Abstract
The influence of the content of a mixture of discrete organic fibers containing 50 % silk, 45 % acrylic, 5 % polyamide on the peculiarities of structure formation of epoxy composites to provide the necessary complex of properties of transport equipment parts is considered in the work. ED-20 brand epoxy dian oligomer was selected as the main component for the binder in the formation of epoxy composites. For crosslinking of epoxy compositions, a PEPA hardener was used to allow the materials to be solidified at room temperature. The surface of the fibrous additive was investigated by the method of IR spectral analysis. Oscillations of C-N groups in the wavenumber range ν = 1068…1122 cm-1 are established; amide group at wave number ν = 1253 cm-1; the nitrile group at a wave number ν = 2239 cm-1; carbonyl C=O group at wave number ν = 2362 cm-1; valence vibrations of the -OH, -NH- groups at the wave number ν = 3410 cm-1. The paper combines the results of the study of adhesion strength at tear and shear and analysis of the surface of failure of the adhesive connection. It is shown that the maximum values of adhesive strength are characterized by materials where the cohesive nature of the destruction of the adhesive compound predominates. The maximum value of adhesive strength is σa = 32,0 MPa and τ = 10,1 MPa with the introduction of a mixture of discrete organic fibers with a content of q = 0,050 wt.h. per 100 parts by weight epoxy oligomer ED-20 and 10 wt.h. of PEPA hardener. Ensuring the viscous nature of the fracture through the controlled introduction of a mixture of discrete organic fibers allows to increase the mechanical strength of the developed materials. The maximum value of mechanical strength is σb = 58,0 MPa and E = 3,3 GPa with the introduction of a mixture of discrete organic fibers with a content of q = 0,010 wt.h. per 100 parts by weight epoxy oligomer ED-20 and 10 wt.h. of PEPA hardener.
References
Khodakovskyi O.V. Teplofizychni vlastyvosti modyfikovanykh paraaminoazobenzolom epoksydnykh matryts dlia zakhysnykh pokryttiv detalei transportnoi haluzi / Khodakovskyi O.V., Amelin M.Iu., Buketova N.M., Yatsiuk V.M. // Naukovyi visnyk KhDMA. – 2017. – № 1 (16). – S. 216–225.
Smetankin S.O. Modyfikovani epoksydni kompozyty dlia pidvyshchennia nadiinosti ekspluatatsii ta yakosti remontu transportnoi tekhniky / S.O.Smetankin, V.D.Nihalatii, O.V.Sharko, D.A.Nahovskyi, O.I. Skyrdenko // Visnyk KhNTU.-2015.-№4(55). – S.203-2018.
Nyhalatyi V.D. Yssledovanye vlyianyia khymycheskoho sostava na rezultatы akustycheskykh yzmerenyi prochnostnыkh svoistv materyalov / V.D. Nyhalatyi // Vesnyk Karahandynskoho hosudarstvennoho unyversyteta. – 2015. - №3 (79). – S.81-86.
Buketov А.V., Sapronov О.О., Brailo М.V., Aleksenko V.L. Influence of theultrasonic treatment on the mechanical and thermal properties of epoxynanocomposites // Materials Science.-Vol. 49, Number 5.– 2014.–Р.696-702.
Buketov А.V., Sapronov О.О., Brailo М.V. Investigation of the Physico-Mechanical and Thermophysical Properties of Epoxy Composites with a Two-Component Bidisperse Filler // Strength of Materials.–Vol. 46, No 5. – 2014.–Р.717-723.
Buketov A. Enhancing performance characteristics of equipment of sea and river transport by using epoxy composites / A. Buketov, P. Maruschak, O. Sapronov, D. Zinchenko, V. Yatsyuk, S. Panin // Transport – 2016. – Vol. – 31(3). – P. 333-342.
Sapronov O.O. Polimerni kompozyty dlia remontu ustatkuvannia hazotransportnoi promyslovosti // Vseukrainskyi shchokvartalnyi naukovo-tekhnichnyi zhurnal: Rozvidka ta rozrobka naftovykh i hazovykh rodovyshch. – №1(66) – 2018. – S. 71-76.
Sapronov O.O. Vykorystannia dyspersnyk dobavok dlia pidvyshchennia teplofizychnykh vlastyvostei polimernykh zakhysnykh pokryttiv / O.O.Sapronov, O.V.Leshchenko // Visnyk KhNTU – 2018. – №1(64). – P. 57-61.
Amelin M.Iu. Vidnovlennia detalei transportu polimernymy kompozytamy z mikrodyspersnymy chastkamy, shcho ye vidkhodamy vyrobnytstva / M.Iu.Amelin, O.O.Capronov, O.V.Khodakovskyi, N.M.Buketova // Naukovi notatky. - Lutsk: LNTU. – Vypusk 60. – 2017. – S. 22-30.
Buketova N.M. Osoblyvosti vplyvu dyspersnoho konverternoho shlamu na adheziini i fizyko-mekhanichni vlastyvosti epoksydnykh kompozytiv / N.M. Buketova // Naukovyi visnyk KhDMA. – 2015. – № 2 (13). – S. 153-162.
Buketov A.V. Use of dispersive additives to ensure high indicatorsof physico-mechanical properties of functional polymer coatings // A.V. Buketov, О.О. Sapronov, O.V. Leshchenko, S.V. Voronenko. Journal of Hydrocarbon Power Engineering. – 2017. – Vol. – 4(2). – P. 54-63.
Koriakyna M.Y. Yspыtanye lakokrasochnыkh materyalov y pokrыtyi. M.: Khymyia. – 1988. – 272 s.
Buketov. A. V. Adhesive pull and shear strength of epoxy nanocomposite coatings filled with ultradispersed diamond / A.V. Buketov, N.A. Dolgov, A.A. Sapronov, and V.D. Nigalatii // Strength of Materials. – Vol. 50, No 3. – 2018. – Р.425-431.
