Effect of PVC plastisol composition and processing conditions on foam expansion and tear strength/Uticaj sastava PVC plastisola i uslova proizvodnje na stepen ekspanzije pena i otpornost na cepanje

• Published in: Hemijska industrija 2014-11, Vol.68 (6), p.701
• Main Authors: Radovanovic, Rajko, Jaso, Vladislav, Pilic, Branka, Stoiljkovic, Dragoslav
• Format: Article
• Language: English
• Subjects: Chemical properties; Foamed materials; Identification and classification; Mechanical properties; Polyvinyl chloride; Production processes; Strength of materials
• ISSN: 0367-598X
• DOI: 10.2298/HEMIND140210028R

The quality of vinyl floorings depends mainly on the right control of the formation of poly (vinyl chloride) (PVC) foam structure. Many process parameters influence the cellular structure and final properties of the PVC foam. In this paper the influence of concentration of blowing agent and calcium carbonate filler, as well as temperature and time of the blowing process on the expansion ratio and tear strength of the PVC foam, were studied. Moreover, regression analysis was performed in order to determine the significance of studied parameters influence on expansion ratio and tear strength of PVC foams. It was found that concentration of the blowing agent in the plastisol mixture had the principal influence on the expansion ratio of the PVC foam. Tear strength was found to depend more or less equally on all studied parameters. The study has also shown that the addition of calcium carbonate filler had insignificantly lowered the expansion ratio, but at the same time it could significantly lower the cost of the final product. This effect was practically employed to improve the economic efficiency of the PVC floorings production in JUTEKS plant in Russia. Keywords: PVC plastisol; foam expansion, tear strength. Kvalitet PVC podova zavisi pre svega od kontrole nastanka celijske strukture polivinilhlorida (PVC) pena. Celijska struktura i krajnja svojstva PVC pene zavise od mnostva proizvodnih prametara. U ovom radu izucavan je uticaj koncentracije sredstva za penjenje i kalcijum karbonata kao punila, kao i temperature i vremena penjenja na stepen ekspanzije i otpornosti na cepanje PVC pena. Osim toga, uradena je regresiona analiza u cilju utvrdivanja znacaja navedenih parametara na stepen ekspanzije i otpornost na cepanja PVC pena. Utvrdeno je da koncentracija sredstva za penjenje u smesi za penjenje ima presudan uticaj na stepen ekspanzije PVC pena. Otpornost na cepanje, pokazalo se, zavisi podjednako od svih izucavanih parametara. Pokazano je da dodatak kalcijum karbonata kao punioca ima vrlo mali uticaj na smanjenje stepena ekspanzije ali zato, sa druge strane, znacajno utice na smanjenje cene krajnjeg proizvoda. Ovo je primenjeno u praksi radi povecanja ekonomske efikasnosti proizvodnje PVC podova u fabrici JUTEKS u Rusiji. Kljucne reci: PVC plastisol * Ekspanzija pena * Otpornost na cepanje Available online at the Journal website: