Effect of Explosive Processing on the Structure and Properties of Polyarylate

Abstract:

Polyarylate (PA, polyoxybenzoyl) is a heat-resistant linear aromatic polyester with a high degree of crystallinity, high physicomechanical and tribotechnical properties that is limited in the possibilities of processing into products. The polymer has low deformability and fluidity in the range of softening temperatures, as well as narrow temperature processing intervals, limited by the destruction temperatures. A promising way to obtain compacts from PA is explosive processing, which ensures the simultaneous realization of high pressure (up to 10 GPa) and temperature (up to 1000 °C). Comparative results of morphology, crystalline and chemical structure and thermomechanical properties of polyarylate after static pressing (SP) and explosive processing (EP) are presented. It was found that EP at the pressure of 2.8 GP, which excludes the destruction and decomposition of polymer compacts, does not cause significant changes to its phase composition, crystalline and chemical structure. The monolithic compacts obtained by EP have higher thermostability and heat deflection temperature than statically compressed ones.

• Periodical: Materials Science Forum (Volume 946)
• Pages: 14-19
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.946.14
• Online since: February 2019
• Authors: Nina A. Adamenko, Galina V. Agafonova*, Andrej V. Kazurov
• Keywords: Explosive Pressing, Polyarylate, Structure, Thermomechanical Properties, Thermostability

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