P25贾连昆宫理想阚成友利用环氧化和开环反应制备植物油基聚醚多元醇.pdfVIP

Synthesis of vegetable oil based polyether polyol via epoxidation followed by ring-opening reaction 利用环氧化和开环反应制备植物油基聚醚多元醇 * Jia Liankun, Gong Lixiang, Kan Chengyou Department of Chemical Engineering and Laboratory of Advanced Materials of Education Ministry, Tsinghua University, Beijing 100084, China *贾连昆 宫理想 阚成友 清华大学化学工程系,教育部先进材料重点实验室, 北京 100084 Abstract: Because petroleum is a nonrenewable resource, the preparation of polyols from relatively cheap and renewable natural oil is highly desired. In this study, the epoxidized cottonseed oil with epoxy oxygen content from 5.25 wt% to 6.15 wt% was first produced by peroxyformic acid generated in situ from hydrogen peroxide and formic acid, which means there were 2.8 to 3.3 epoxy groups exist in each epoxidized cottonseed oil molecule. Then the preparation of polyether polyols by the ring opening of the epoxidized cottonseed oil with sorbitol in the presence of a tetra-fluoroboric acid was explored. Keywords: Vegetable oil, Epoxidation, Polyether polyols, Ring opening reaction 摘要：由于石油是一种不可再生资源，以价格相对便宜且可再生的植物油为原料的聚醚多元醇的研究与开 发受到关注。本文首先通过过氧化氢与甲酸对棉籽油进行的原位环氧化反应，得到了环氧棉籽油，其环氧 值在5.25%到6.15%之间，即平均每个环氧棉籽油分子上含有2.8 到3.3 个环氧基团，然后以山梨醇为开环 剂，以四氟硼酸为催化剂，对环氧棉籽油通过开环反应制备聚醚多元醇的方法进行了探索。 关键词：植物油，环氧化反应，聚醚多元醇，开环反应 1. Introduction Polyether polyols have been widely used in the preparation of polyurethane resins, which play an important role in adhesives. Since the high polarity and reactivity of isocyanate group and urethane group, polyurethane has great chemical adhesive property with materials having active hydrogen, such as paper, foam plastic, etc. Besides, with good toughness, polyurethane adhesive can be used between soft and hard