Abstract
The effect of thermoelastoplasts, which are block copolymers based on polybutylene terephthalate and polytetramethylene oxide with different ratios of rigid and elastic blocks, on the physical and mechanical properties of epoxy polymers has been investigated. It was found that the dependences of the glass-transition temperature, tensile strength, deformation at break, and elastic modulus on the amount of the introduced block copolymer are extreme, while the positions of the maxima and their intensity depend on the ratio of rigid and elastic blocks in the thermoelastoplast. It is shown that, with an increase in the content of the elastic block, the maximum values of the glass-transition temperature and deformation at rupture shift towards lower concentrations of thermoelastoplast, while their absolute values decrease in the case of heat resistance and increase for the deformation index. For the parameters of strength and elastic modulus, the dependence of their maximum values on the ratio of elastic and rigid blocks is more complex. It was found that modification with thermoelastoplast makes it possible to increase the chemical resistance of epoxy composites.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
A. Noshay and J. McGrath, Block Copolymers: Overview and Critical Survey, 1st ed. (Academic, New York, 1977; Mir, Moscow, 1980).
V. V. Kovriga, “Composite materials in industry. Part 3,” Plast. Massy, No. 1, 4–14 (2003).
Development in Block Copolymers, Ed. by J. Goodman (Elsevier, New York, 1982).
M. D. Ellul, D. A. Hazelton, C. Cozewith, and A. K. Mehta, US Patent no. 6268438 ((July 31, 2001).
Z. T. Alakaeva, Z. T. Kozhaeva, R. M. Mamkhegov, T. A. Borukaev, M. Kh. Ligidov, and A. K. Mikitaev, “Study of block copolymers based on polybutyleneterephthalate,” Izv. Kabard.-Balkar. Gos. Univ. 2 (1), 29–31 (2012).
K. I. Verkhgese and M. Frank, RF Patent no. 2389743, Byull. Izobret., No. 14 (2010).
Yu. S. Kochergin, T. I. Hryhorenko, and Wu Yiqi, “Binders based on mixtures of epoxy polymers and thermoelastoplasts. Part 1. Relaxation properties of epoxy polymers modified by polybutadieneterephtalate–polytetramethyleneoxide block copolymers,” Polym. Sci., Ser. D 14, 547–552 (2021).
A. Ya. Malkin, A. A. Askadskii, and V. V. Kovriga, Techniques for Measuring Mechanical Properties of Polymers (Khimiya, Moscow, 1978) [in Russian].
A. A. Askadskii and Yu. I. Matveev, Chemical Structure and Physical Properties of Polymers (Khimiya, Moscow, 1983).
C. B. Bucknall, Toughened Plastics (Applied Science, London, 1977; Khimiya, Leningrad, 1981).
P. G. Babaevskii and S. G. Kulik, Crack Resistance of Cured Polymer Compositions (Khimiya, Moscow, 1991) [in Russian].
Yu. S. Kochergin, T. A. Kulik, and T. I. Hryhorenko, “Epoxy adhesives for special applications,” Klei. Germetiki. Tekhnol., No. 3, 3–7 (2006).
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated by M. Drozdova
For Part 1 see Polymer Science, Series D, 2021, vol. 14, pp. 547–552.
Rights and permissions
About this article
Cite this article
Kochergin, Y.S., Hryhorenko, T.I. & Yiqi, W. Binders Based on Mixtures of Epoxy Polymers and Thermoelastoplasts. Part 2. Physical and Mechanical Properties of Epoxy Polymers Modified by Polybutadieneterephtalate–Polytetramethyleneoxide Block Copolymers. Polym. Sci. Ser. D 15, 35–39 (2022). https://doi.org/10.1134/S1995421222010129
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1995421222010129