Structure and Properties of a Mixture of an Epoxy Polymer with a Block Copolymer Polybutylene Terephthalate-Poly-tetramethylene Oxide
Yu. S. Kochergin, V. V. Zolotareva
State Organization of Higher Professional Education «Mikhail Tugan-Baranovsky Donetsk National University of Economics and Trade»
Abstract: The influence of a modifying thermoelastoplast additive on the deformation and strength properties of epoxy composites was studied over a wide temperature range. A two-block polybutyleneterephthalate-polytetramethylene oxide (PBT-PTMO) copolymer with a molecular weight of 35 thousand and a content of elastomeric PTMO blocks of 70 mass. % and rigid blocks of PBT 30 mass. % was used as a thermoelastoplast. It is established that the modified polymer with a PBT-PTMO content of up to 10 wt. h. is characterized by a higher glass transition temperature. It is shown that in the glassy state of polymers, the tensile strength values for the initial and modified samples are almost identical, and in the highly elastic state the strength of the modified epoxy is significantly higher than that of the unmodified one. The formation of separate phases formed by elastomeric and rigid blocks in an epoxy matrix was determined by electron microscopy. It is shown that the addition of PBT-PTMO to epoxy polymers leads to an increase in the destruction work of the material, increases their impact, heat, frost and chemical resistance without reducing the strength and modulus of resistance.
Keywords: epoxy polymer, thermoelastoplast, polybutylene terephthalate-polytetramethylene oxide block copolymer, modification, structure, deformation and strength properties.
Pages: 43-52.
Link for citation: Kochergin, Yu. S.; Zolotareva, V. V. Structure and Properties of a Mixture of an Epoxy Polymer with a Block Copolymer Polybutylene Terephthalate-Poly-tetramethylene Oxide. – Text : electronic. – In: Proceeding of the Donbas National Academy of Civil Engineering and Architecture. – 2021. – Issue 2021-1(147) Modern building materials. – Р. 43-52. – URL: https://donnasa.ru/publish_house/journals/vestnik/2021/2021-1(147)/st_05_kochergin_zolotareva.pdf (date of access: 15.10.2024). (in Russian)
Issue 2021-1 (147)Journal: Proceeding of the Donbas National Academy of Civil Engineering and Architecture
Publish house: Donbas National Academy of Civil Engineering and Architecture