通过L16(44)正交实验考察了双氧水用量、催化剂用量、反应时间和反应温度对环氧棉籽油环氧值的影响,优化合成工艺。结果表明,100 g棉籽油,催化剂用量0.8 g,双氧水用量130 m L,反应温度为60℃,反应时间为7 h,产品的环氧值为6.20%,酸值为1...通过L16(44)正交实验考察了双氧水用量、催化剂用量、反应时间和反应温度对环氧棉籽油环氧值的影响,优化合成工艺。结果表明,100 g棉籽油,催化剂用量0.8 g,双氧水用量130 m L,反应温度为60℃,反应时间为7 h,产品的环氧值为6.20%,酸值为1.496 mg Na OH/g,碘值为2.58g/100 g。所得制品通过红外和核磁共振表征,确证棉籽油被环氧化生成环氧棉籽油。展开更多
In order to prepare the polyol with all bio-based components as raw materials,cottonseed oil was first epoxidized by peroxyformic acid generated in situ from hydrogen peroxide and formic acid,and the cottonseed oil ba...In order to prepare the polyol with all bio-based components as raw materials,cottonseed oil was first epoxidized by peroxyformic acid generated in situ from hydrogen peroxide and formic acid,and the cottonseed oil based polyols with variable hydroxyl value were then prepared by the ring-opening of epoxidized cottonseed oil with sorbitol,which is a multi-functional hydroxyl compound derived from a natural source.The chemical structure of the products was characterized with FTIR analysis, and the residual epoxy oxygen content and hydroxyl value of the polyol versus the ring-opening time were investigated.展开更多
文摘通过L16(44)正交实验考察了双氧水用量、催化剂用量、反应时间和反应温度对环氧棉籽油环氧值的影响,优化合成工艺。结果表明,100 g棉籽油,催化剂用量0.8 g,双氧水用量130 m L,反应温度为60℃,反应时间为7 h,产品的环氧值为6.20%,酸值为1.496 mg Na OH/g,碘值为2.58g/100 g。所得制品通过红外和核磁共振表征,确证棉籽油被环氧化生成环氧棉籽油。
文摘In order to prepare the polyol with all bio-based components as raw materials,cottonseed oil was first epoxidized by peroxyformic acid generated in situ from hydrogen peroxide and formic acid,and the cottonseed oil based polyols with variable hydroxyl value were then prepared by the ring-opening of epoxidized cottonseed oil with sorbitol,which is a multi-functional hydroxyl compound derived from a natural source.The chemical structure of the products was characterized with FTIR analysis, and the residual epoxy oxygen content and hydroxyl value of the polyol versus the ring-opening time were investigated.
