摘要
酚醛树脂作为应用广泛的热固性树脂,其预聚体的固化温度以及固化物的分解温度对其使用范围有重要影响。本论文中使用三乙醇胺制备了热固性酚醛预聚体,并利用DSC和TG等分析手段,表征了不同三乙醇胺催化制备酚醛树脂的固化过程和热失重过程。DSC测试表明,用三乙醇胺催化合成的酚醛预聚体当催化剂用量较低时,随着催化剂用量的增加,预聚体的固化温度在逐渐降低,但当催化剂用量超过19g时,预聚体的固化温度又逐渐升高;TG测试表明,三乙醇胺催化制备酚醛预聚体,其固化产物的热稳定性均不理想,几乎随着温度的升高,呈现线性的失重。
in this paper, As one of most popular thermosetting resins, curing temperature and decomposition temperature influence the applications of phenolic resin dramatically. In the paper a series of phenolic resins which catalyzed by triethanolamine were synthesized. The curing and decomposition processes of these phenolic resins were characterized by means of DSC and TGA. It was discovered from DSC test that cure temperature of the preploymer lowered gradually along with the increase of the triethanolamine at the beginning. When the mass of the triethanolamine exceeded 19g, curing temperature of the polymer raised gradually. TG test showed that the thermal stabilities of cured phenolin resins which were catalyzed by means of triehanolamine were bad. All TG graphs of synthesized phenolic resins showed linear mass loss process along with the increase of the temperature.
出处
《塑料制造》
2014年第5期74-76,共3页
Plastics Manufacture
关键词
酚醛树脂
三乙醇胺
固化
胶粘剂
Phenolic resin
Triethanolamine
Curing
Adhesive
