新工艺合成高固低黏羟基丙烯酸树脂的研究

New Synthetic Technology of High Solid and Low Viscosity Hydroxyl Acrylic Resin

文章介绍了一种合成高固低黏羟基丙烯酸树脂的新型工艺——加压反应工艺,通过试验证明了采用加压反应工艺制备树脂较常压工艺粘度低很多,文中还探讨了引发剂种类、反应温度等因素对树脂黏度的影响,得出玻璃化温度越低树脂黏度越小,采用TBPO/DBPO复配的引发剂不仅树脂黏度较低,残留单体少而且反应釜压力最低,是一种理想的引发剂组合。文中还考察了反应温度的影响,数据表明反应温度越高,树脂黏度越低,但反应温度压力越大,考虑到反应釜压力及生产安全,确定理想反应温度为160℃。

The paper a novel Synthesis technology of high solid content and low viscosity of hydroxyl acrylic resin will be introduced and such technology using pressure reaction has been applied in industrialization. The effects of glass transition temperature, initiator type, reaction temperature and other factors on the viscosity of hydroxyl acrylic resin are researched. It is concluded that the lower the reaction temperature, the lower the viscosity of the resin, the initiator of TBPO/DBPO mixture is not only low viscosity of resin, but also the lowest residual monomer and the lowest pressure of the reactor. In this paper, the effects of reaction temperature were investigated. The data showed that the higher the reaction temperature, the lower the viscosity of the resin, but the greater the reaction pressure. Considering the pressure of the reactor and the safety of production, the ideal reaction temperature was 160 ℃.