Properties of Composites Based on Epoxy Resin Modified with Organic Tin Halide
Abstract: A modified resin based on organic tin halide, which is used as dibromide dibutyltin, and industrial epoxy resin of the ED-16 brand was synthesized. A comparative study of the complex of physical-mechanical and relaxation properties of composites based on the initial and modified resins cured at room temperature and subjected to heat treatment is carried out. It was found that composite materials based on modified resin are characterized by lower values of tensile strength, elastic modulus, tensile strength and glass transition temperature compared to samples based on the original epoxy resin. The values of strain at break are approximately the same for both resins. The observed change in the deformation and strength properties of samples during their exposure in a liquid medium is explained by the superposition of the effects of plasticization and re-hardening of epoxy polymers. At short exposure times, the action of the sorbed liquid is mainly aimed at weakening the intermolecular interaction in the sample, which reduces its tensile strength and increases its deformation capacity. At long exposure times, when the amount of absorbed liquid becomes sufficiently large and intense molecular movement occurs, pre-hardening processes prevail, leading to an increase in the cross-linking density and, as a result, to a decrease in the deformation ability and an increase in the strength index. It is shown that composites containing epoxy resin modified with dibromide dibutyltin are characterized by increased resistance to the development of fungi and mold, as well as better fire resistance. The studied polymers can be considered as promising for obtaining antifouling coatings based on them for hydraulic equipment, sea and river vessels.
Keywords: epoxy composite, organic tin halide, deformation-strength and relaxation properties, fire resistance, antifouling fungus-resistant coatings.
Pages: 63-72.
For citation: Kochergіn, Yu. S.; Zolotaryeva, V. V. Properties of Composites Based on Epoxy Resin Modified with Organic Tin Halide. – Text : electronic. – In: Proceeding of the Donbas National Academy of Civil Engineering and Architecture. – 2022. – Issue 2022-1(153) Modern building materials. – Р. 63-72. – URL: https://donnasa.ru/publish_house/journals/vestnik/2022/2022-1(153)/st_08_kochergin_zolotareva.pdf (date of access: 19.11.2024). – ISSN 2519-2817.
Issue 2022-1 (153)
Journal: Proceeding of the Donbas National Academy of Civil Engineering and Architecture
Publish house: Donbas National Academy of Civil Engineering and Architecture
Journal: Proceeding of the Donbas National Academy of Civil Engineering and Architecture
Publish house: Donbas National Academy of Civil Engineering and Architecture