Mechanisms of interaction between the components in adhesive compositions based on chloroprene rubber
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2013-11-05
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Abstract
The aim of this study is to investigate the mechanisms of interaction between the components in adhesive compositions based on chloroprene rubber (CR) during the formation of an adhesive joint. Investigations are made on the influence of the phenol-formaldehyde resin amount, of the rubber compounds processing regime, of reaction conditions, and of interactions occurring between the rubber and the other components within the adhesive compositions, on the adhesive properties of the polychloroprene adhesives. A comparison between the data from mechanical tests and the data from FTIR and rheological studies of these adhesives is provided. The IR spectroscopic results prove that adding the resin to the rubber on the rolls during the mixing process favors the creation of physical and chemical interactions between the resin and the rubber and the rest of the components of the adhesive composition. The necessary minimum resin amount as an agent improving the compatibility between the associates of the oxides and the chloroprene rubber, and the associates of the rubber itself, is determined.