The Role of Solvent in Formation of Relaxation Transitions in Butadiene Nitrile Rubber Chlorinated Polyisoprene Mixtures Used in Elastomeric Adhesive Compositions

摘要

Polymer films prepared from SKN-26SMNT nitrile butadiene rubber and Pergut S20 chlorinated polyisoprene solutions and their mixtures are studied with differential scanning calorimetry. The thermograms are analyzed to reveal the influence of a solvent and the ratio of polymers on their transition temperatures from the glassy state to the highly elastic one. We found that there is a relaxation transition, when the butadiene–nitrile rubber/chlorinated polyisoprene ratios are 80/20 and 50/50 wt %, and the solvent determines its temperature range.