ポリエステル系熱可塑性エラストマーの反応押出による改質
Modification of Thermoplastic Polyester-Polyether Elastomer by Reactive Extrusion
倉持智宏・稲葉智一・大村洋司・伊保内 賢
Kuramochi, Tomohiro / Inaba, Tomokazu / Omura, Youji / Ibonai, Masaru
A thermoplastic elastomer (TPE) is an elastomer at room temperatures which can be molded at high temperatures like normal thermoplastics. However the compression set of a TPE is higher than that of crosslinked rubbers. In this study, we tried crosslinking a thermoplastic polyester-polyether elastomer (TPEE) with triglycidyl or tetraglycidyl compounds during extrusion to reduce the high compression set. Crosslinked TPEE could be obtained easily in a single screw extruder. The tensile strength and tensile impact strength of the molded TPEE were found to be higher than those of the original TPEE respectively. The compression set of TPEE was improved by its reactive extrusion with glycidyl compounds.
Key words: Polyester-polyether elastomer / Glycidyl compound / Reactive extrusion / Crosslinking reaction / Compression set