Structure and properties of elastomers with hard segments and crystallizing soft segments suitable for the Arctic and the Far North

Abstract

The physicomechanical and structural characteristics of several elastomers based on terminal epoxy oligomers synthesized from oligotetramethylene oxide diol, various diisocyanates and oligotetramethylene oxide diamine were studied. Additionally, two model compositions of urethane containing elastomers with hard segments were synthesized to reveal the peculiarities of the organization of the supramolecular structure. It was found that the use of 2,4-toluene diisocyanate allows to obtain elastomers with a higher degree of microphase separation and, accordingly, a lower glass transition temperature. It was shown that regardless of the type of diisocyanate used in the synthesis, the elastomer contains crystalline phase. New materials can be used as compounds, adhesives and sealants for various purposes with the possibility of using them under extreme conditions of the Arctic and the Far North.