关键词: 小桐子油脂肪酸, 脂肪酸聚酯多元醇, 聚氨酯泡沫, 性能

Abstract: The methods of epoxidication，ring open and esterification were used to prepare polyester polyol with three kinds of fatty acids which are different in iodine value，and the properties of polyester polyol and polyurethane foam （PUF） were compared. It was found that the iodine number of fatty acids （1#<2#<3#） effected on the hydroxyl value of polyol，the higher iodine value，the higher hydroxyl value of polyol. Hydroxyl values of 1#，2# and 3# polyester polyol were 261.47，370.28 and 434.49 mgKOH/g，respectively. Polyester polyol was analysed with GPC. Polyol’s relative molecular weights distributed in 600—2000 were detected by GPC. Foam density determines the performance of mechanism，such as higher foam density leads better compress and bending property. Three kinds of foam have good compress and bending property，whose foam densities are in the sequence of ?1#

Key words: fatty acids from Jatropha curcas L. seed oil, polyester polyol derived from fatty acids, polyurethane foam, property