SPECIAL PURPOSE PLASTICATORS FOR POLYVINYL CHLORIDE

Abstract

Background Elastic materials based on polyvinyl chloride (PVC) are widely used in various fields: medical products, cables, shoes, hoses, floor coverings, seals, packaging films, etc. Polyvinyl chloride is a polar rigid polymer, and for plasticizers are used to give it softness and rubbery properties. The most widespread in the production of elastic PVC materials are dialkyl phthalate plasticizers for general purposes - dioctyl phthalate and diisononyl phthalate. Aims and Objectives The paper considers the efficiency of the use of an environmentally friendly oil-free plasticizer triethylene glycol bis (2-ethylhexanoate) in a PVC compound intended for the manufacture of frost-resistant hoses. Results The effect of triethylene glycol bis (2-ethylxanoate) in comparison with dioctyl adipate (DOA) and a polymer plasticizer, which is an ester of adipic acid Edenol 1215, on the physical and mechanical properties of PVC compounds, oil and petrol resistance, frost resistance and other performance characteristics, as well as a dynamo-mechanical analysis of the investigated materials was carried out on a NETZSCH DMA 242 device. The plasticizer triethylene glycol bis (2-ethylhexanoate) contributes to the greatest decrease in the glass transition temperature of PVC compound and provides higher elasticity at low temperatures and, as a consequence, better frost resistance in comparison with dioctyl adipate and Edenol 1215 The oil and petrol resistance of PVC compounds obtained with triethylene glycol bis (2-ethylxanoate) is comparable to the sample plasticized with DOA and is noticeably inferior to the material with the plasticizer Edenol 1215, which has a higher molecular weight. Triethylene glycol bis (2-ethylhexanoate) is a promising plasticizer for the industrial production of PVC compounds with increased frost resistance.