Authors: V.K. Mingazova, R.P. Sergeev, N.N. Nikitina, N.V. Baranova

Title of the article: Study of thermomechanical properties of the butadiene-styrene thermoplastic elastomer - polystyrene system

Year: 2023, Issue: 5, Pages: 55-64

Branch of knowledge: 2.6.12. Chemical technology of fuel and high-energy substances

Index UDK: 543.575:543.579:678.073

DOI: 10.26730/1999-4125-2023-5-55-64

Abstract: Relevance of the paper. Thermoplastic elastomers are polymer materials with unique properties. Under operating conditions thermoplastic elastomers are capable, like elastomers, of large reversible deformations, and at higher temperatures they flow like thermoplastics. The issue of maintaining a complex of elastic-strength properties at a high level during synthesis, storage, processing and operation, as well as increasing the service life by reducing the negative effects of temperatures, oxidizing factors, and mechanical loads on the polymer matrix is always a priority. Among the various types of thermoplastic elastomers (TPEs) produced on an industrial scale, block copolymers are very important. Block copolymers have a two-phase structure, since macromolecules consist of blocks with different chemical structures and properties that are thermodynamically incompatible with each other. Such TPEs contain a large proportion of soft blocks, which determine the flexible elastomeric nature of the copolymer, and a small part of hard blocks, which play the role of physical network nodes and filler. The properties of block TPEs depend both on the chemical nature and molecular weight of the blocks, and on the ratio, sequence of arrangement and sizes of hard and soft blocks. The variation of hard and soft components realizes the wide capabilities of such a system. Butadiene-styrene, polyester, polyurethane and polyamide block copolymers have found practical application. General-purpose styrene block copolymers are the cheapest and are widely used in various industries.
Purpose of the research: evaluation of elastic-elastic properties of divinyl-styrene thermoplastic elastomer-polystyrene system in the low-temperature area.
Research methods: thermomechanical analysis, differential scanning calorimetry.
Results: Thermal analysis of compositions based on butadiene-styrene thermoplastic elastomer and polystyrene was carried out. Temperature dependence of mechanical properties of compositions with different polystyrene content was obtained.

Key words: butadiene-styrene thermoplastic elastomer polystyrene differential scanning calorimetry thermomechanical analysis

Receiving date: 18.10.2023

Approval date: 20.11.2023

Publication date: 30.11.2023

CITE DOWNLOAD