小桐子油生物基多元醇的合成及其在硬质聚氨酯泡沫中的应用

Synthesis and application of bio-based polyols prepared from jatropha curcas oil in rigid polyurethane foam

通过对小桐子油双键进行环氧化、羟基化反应,成功制备出小桐子油生物基多元醇,并在硬质聚氨酯泡沫中进行了应用。小桐子油较佳环氧化工艺条件为:甲酸用量为理论用量的0.5倍、双氧水用量为理论用量的1.5倍、催化剂质量为小桐子油质量的2%,反应温度60℃,反应时间8 h;较佳的羟基化条件为:n(二异丙醇胺):n(环氧小桐子油)=1.3∶1、反应温度155℃、反应时间6 h;泡沫应用结果表明:在实现替代石化类聚醚多元醇不超过45份的情况下,制得的硬质聚氨酯泡沫与采用石化类聚醚多元醇制得的泡沫性能相当。

The bio-based polyols are prepared by epoxidation and hydroxylation reactions to the ＇ C = C＇ bond, using jatropha cur- cas oil as the raw material. Then the rigid polyurethane foams are prepared and the performance evaluations of the foams are carried out. The experimental results show that to the epoxidation reaction, the suitable amount of formic acid is 0. 5 times of the theoretical a- mount, the suitable amount of hydrogen peroxide is 1.5 times of the theoretical amount, the suitable amount of phosphate catalyst is 2% of the amount of jatropba curcas oil, the reaction temperature is 60 ~C and the reaction time is 8 h. While to the hydroxylation re- action, the suitable mole ratio of diisopropanolamine to epoxide jatropha curcas oil is 1.3 ： 1, the reaction temperature is 155 ℃, the reaction time is 6 h. The results of the foams＇ properties evaluation show that comparing with the foams made by petroleum polyols, those foams made by bio-based polyols can reach the same properties when the bio-based polyols are added to 45 parts.