Control of Properties of Composite Materials Based on Thiirane by Changing the Chemical Nature of Hardeners
Abstract: The possibility of regulating the cure rate, the size of adhesive, deformation-strength and dynamic mechanical properties of adhesive composite materials based on thioglycidyl ether diphenylolpropane using amine hardeners of various chemical nature is investigated. As the latter, diethylenetriamine of the DETA brand, diethylenetriaminomethylphenol of the UP-583D brand and aminopolyamide of the PO-300 brand were used. It was found that the rate of adhesion and cohesive strength at the initial stage (during the first hour) of curing compositions containing UP-583D and DETA significantly exceed compositions cured by-300. The introduction of 2,4,6-tris(dimethylaminomethyl)phenol (accelerator of the UP-606/2 brand) into the composition has an insignificant effect on both the rate of strength gain and the value of the adhesive strength parameter itself. It is shown that the deformation at break, regardless of the type of hardener, monotonically decreases with increasing curing time, and especially rapidly in the first 1–2 hours of curing. The change in the concentration of the hardener and the introduction of the UP-606/2 accelerator into the composition significantly affect the amount of deformation at break only in the first 24 hours of curing. By the method of dynamic mechanical spectroscopy, it was found that as the curing time increases, the maximum value of the tangent of the angle of mechanical losses decreases, which may be due to the formation of a denser chemical crosslinking.
Keywords: thioglycidyl ether of diphenylolpropane, thiirane, amine hardener, adhesive, defomation-strength and dynamic mechanical properties.
Pages: 39-45.
For citation: Kochergin, Yu. S.; Karat, L. D.; Zolotareva, V. V. Control of Properties of Composite Materials Based on Thiirane by Changing the Chemical Nature of Hardeners. – Text : electronic. – In: Proceeding of the Donbas National Academy of Civil Engineering and Architecture. – 2023. – Issue 2023-1(159) Modern building materials. – Р. 39-45. – URL: https://donnasa.ru/publish_house/journals/vestnik/2023/2023-1(159)/st_06_kochergin_karat_zolotareva.pdf (date of access: 19.11.2024). – ISSN 2519-2817.
Issue 2023-1 (159)
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