摘要
木质素是植物界中仅次于纤维素的第二大可再生资源,但其利用率较低,大多数被焚烧掉,对环境产生污染。利用癸二酸、乙二醇、丙三醇和木质素合成木质素基聚酯多元醇。讨论了合成温度、木质素含量对所合成多元醇的羟值、酸值、耐热性和结晶度的影响。实验结果表明:适宜的合成温度为160℃;随着木质素含量的增加,多元醇的羟值和酸值也增加,结晶度则随着木质素含量的增加而降低;合成的木质素基聚酯多元醇有良好的耐热性,完全可以用于聚氨酯胶黏剂的制备。
The lignin is second only to cellulose in abundance among the renewable resources. But the utilization of lignin is low and most of them are burned, which making the environment polluted. The lignin-based polyester polyols are synthesized with using sebacic acid, ethylene glycol, glycerol and lignin. The effect of synthesis temperature and the content of lignin on the hydroxyl value, acid value, heat resistance and crystallinity of the prepared polyester polyols are studied. The results show that the suitable synthesis temperature is 160~C, and with the increase of lignin content, the hydroxyl value and acid value of the polyester polyols increases, but the crystallinity decreases. The lignin-based polyester polyols have a good heat resistance, and it can be used in the preparation of polyurethane adhesive.
出处
《化学与粘合》
CAS
2015年第3期171-174,共4页
Chemistry and Adhesion
基金
黑龙江省自然科学基金资助项目(编号:C201335)
哈尔滨市科技创新人才研究专项资金项目(编号:2014RFXXJ066)
关键词
木质素
聚酯多元醇
合成
聚氨酯
Lignin
polyester polyols
synthesize
polyurethane
