イソシアヌレート型架橋ポリウレタンの性質

概要

論文の詳細を見る
Polyurethane elastomers containing isocyanurate rings as crosslinking structureswere prepared by the crosslinking of prepolymers in dimethylformamide solution with NaCN catalyst. Physical properties such as gel fraction, swelling ratio, density, glass transition temperature, Young's modulus, tensile strength and elongation at break were measured. The effects of the structure of diisocyanate, the degree of crosslinking and the difference in crosslinking structure on the properties of polyurethanes were studied. The stress-strain curves of polyurethanes prepared from poly (oxytetramethylene) glycol rised up at lower extensions and gave higher tensile properties than those of triol-cured and diamine-cured polyurethanes. It was considered that the rigid crosslinking structure of isocyanurate ring led high tensile properties.
近畿大学の論文
1972-12-01