Relaxation properties of the materials based on the blends of polyvinylchloride and ABS-plastic

Vestnik MGSU 8/2015
  • Matseevich Andrey Vyacheslavovich - Moscow State University of Civil Engineering (National Research University) (MGSU) postgraduate student, Department of Composite Materials Technology and Applied Chemistry, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Askadskiy Andrey Aleksandrovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Chemical Sciences, Professor, Department of Composite Materials Technology and Applied Chemistry, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Matseevich Tat’yana Anatol’evna - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Physical and Mathematical Sciences, Associate Professor, Department of Higher Mathematics, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 118-129

The polymer mixes based on polyvinyl chloride (PVC) and ABS-plastic with different ratios of components from 0 to 100 % have been obtained. The compatibility analysis of the components of the mixes was provided with the use of the compatibility criterion, taking into account the chemical structure of the polymers, their surface energy and molar volume of the repeating unit, as well as Hildebrand solubility parameter. A complete thermodynamic compatibility takes place, which allows preparation of monolithic materials. The experiments on stress relaxation under uniaxial compression of the samples at various concentrations of blend components at the temperatures ranging from 23 to 70 oC were performed. The approximation of the stress relaxation curves using modern memory functions based on the analysis of entropy production of the system during the relaxation process was performed. These physical parameters of the memory functions allow evaluating a long-term mechanical working ability of the materials derived from the blends of PVC and ABS-plastic.

DOI: 10.22227/1997-0935.2015.8.118-129

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WOOD-POLYMER NANO-MODIFIED POLYVINYLCHLORIDE COMPOSITE BUILDING MATERIALS

Vestnik MGSU 4/2018 Volume 13
  • Abdrakhmanova Lyaylya Abdullovna - Kazan State University of Architecture and Engineering (KSUAE) Doctor of Technical Sciences, Professor, Professor of the Department of Construction Materials Technology, Products and Structures, Kazan State University of Architecture and Engineering (KSUAE), 1 Zelenaya str., Kazan, 420043, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Khantimirov Ayaz Gabdrashitovich - Kazan State University of Architecture and Engineering (KSUAE) Master student, Department of Technology of Construction Materials, Products and Structures, Kazan State University of Architecture and Engineering (KSUAE), 1 Zelenaya str., Kazan, 420043, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Nizamov Rashit Kurbangalievich - Kazan State University of Architecture and Engineering (KSUAE) Doctor of Technical Sciences, Rector, Professor of the Department of Construction Materials, Products and Structures Technology, Kazan State University of Architecture and Engineering (KSUAE), 1 Zelenaya str., Kazan, 420043, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Khozin Vadim Grigor'evich - Kazan State University of Architecture and Engineering (KSUAE) Doctor of Technical Sciences, Professor, Head of the Department of Construction Materials, Products and Structures Technology, Kazan State University of Architecture and Engineering (KSUAE), 1 Zelenaya str., Kazan, 420043, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 426-434

Subject: questions of nano-modification of polyvinylchloride (PVC) composites filled with wood flour (WF) are considered. The wood-filled polyvinylchloride composites developed to date possess high operational parameters but have a significant technological disadvantage (high viscosity of melts), which limits their processing and use. To increase the compatibility of polyvinylchloride and wood flour, experimental studies were conducted on the use of small doses of carbon nanotubes as effective binding agents. Research objectives: investigation of the structure and properties of highly filled nano-modified polyvinylchloride composites. Materials and methods: basic wood-filled polyvinylchloride composites are considered for production of molding profiles, in which single-walled carbon nanotubes in various dispersion media were used as modifiers. We used standard physical and mechanical methods for polymer material properties estimation, as well as a set of methods for analyzing the structure of materials, in particular optical and electronic microscopy. Results: the ranges of optimal concentrations of carbon nanotubes in the composites are determined experimentally, depending on the degree of filling with the wood flour, type and nature of carbon nanotube carrier medium, as well as the method of mixing the components in the process of molding the products by the developed prescriptions. Conclusions: experiments have confirmed technical effectiveness of using nanotubes as additives that enhance the adhesion interaction at the boundary of the polymer with the wood flour. The obtained functional dependencies can be the basis for practical realization of production of molding profiles by extrusion method.

DOI: 10.22227/1997-0935.2018.4.426-434

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