阳离子型萜烯基环氧树脂多元醇的合成及其分散稳定性研究  

Synthesis and Dispersion Stability of Cationic Polyol Based on Hydrogenated Terpinene-maleic Ester Type Epoxy Resin

作　　者：吴国民[1,2,3,4,5] 孔振武[1,2,3,4,5,6] 黄焕[1,2,3,4,5,6] 陈健[1,2,3,4,5] 储富祥[1,2,3,4,5] 

机构地区：[1]中国林业科学研究院林产化学工业研究所 [2]生物质化学利用国家工程实验室 [3]国家林业局林产化学工程重点开放性实验室 [4]江苏省生物质能源与材料重点实验室,江苏南京210042 [5]中国林业科学研究院林业新技术研究所,北京100091 [6]中国林业科学研究院林产化学工业研究所南京科技开发总公司,江苏南京210042

出　　处：《林产化学与工业》2009年第6期1-6,共6页Chemistry and Industry of Forest Products

基　　金：国家自然科学基金资助项目(30571465);国家杰出青年科学基金资助项目(30325031)

摘　　要：利用二乙醇胺(DEA)、聚乙二醇200(PEG200)对氢化萜烯-马来酸酐缩水甘油酯型环氧树脂(HTME)改性,制备了阳离子型环氧树脂基多元醇水分散体。通过对合成反应影响因素分析,确定了制备环氧树脂基多元醇的最佳反应条件:DEA用量为12%(以HTME的质量计,下同),PEG200与HTME(与DEA氨基反应后的量)物质的量比为1∶1～1.2∶1;催化剂ZnCl2用量为2%,在100℃下反应6～7 h。通过化学分析和红外光谱分析方法表征了该多元醇的化学结构。随着PEG200用量的增加,所合成多元醇的羟值提高,软化点、玻璃化温度(Tg)及分散体黏度降低。纳米粒度及电位分析表明,在酸性条件下,DEA用量为12%时所合成的环氧树脂基多元醇具有良好的水分散稳定性,水分散体的Z均粒径小于100 nm。多元醇水分散体在高固含量时黏度较大,添加适量极性惰性稀释剂丙二醇甲醚醋酸酯可有效降低分散体黏度。A novel cationic polyol which could crosslink with poly-isocyanate to form two-component waterborne polyurethane was prepared from hydrogenated terpinene-maleie ester type epoxy resin （ HTME ） modified by hydrophihc compounds of diethanolamine（DEA） and polyethylene glycol 200（ PEG200）. Suitable synthesis conditions were confirmed by studying factors of synthesis reaction. Good-quality polyol could be obtained by HTME reacting with DEA at the amount of 12 % of HTME by weight and PEG200 whose molar ratio to HTME （ the quantities after reacting with amino group of DEA） was 1 ： 1-1.2 ： 1 at temperature of 100 ℃ for about 6-7 h in the presence of ZnCl2 as catalyst with the amount about 2 % of HTME by weight. The chemical structure of the polyol was characterized by FT-IR spectra. The dosage of PEG200 affected OH-value, softening point, glass-transition temperature （ Ts ） of the polyol resin and the viscosity of the dispersion. With the increasing of dosage of PEG200, hydroxyl value rised,while softening point, Ts and viscosity were decreased. From the size and zeta potential analysis, it was indicated that the cationic polyol dispersion had good stability under acidic condition and its particle size was not more than 100 nm when the dosage of DEA reached 12 % of HTME by weight. The viscosity of the polyol dispersion with high solid content was quite high, while addition of some inert thinner such as propylene glycol methyl ether acetate （PMA） could lower the viscosity sensitively.

关 键 词：氢化萜烯酯型环氧树脂 水性多元醇 合成 稳定性 

分 类 号：TQ351[化学工程] TQ32