木质素胺/聚酰胺-环氧树脂体系的固化动力学研究  

Study on curing kinetics of lignin amine/polyamine-epoxy resin blends

作　　者：关丽珠 邸明伟[1] 

机构地区：[1]东北林业大学生物质材料科学与技术教育部重点实验室,黑龙江哈尔滨150040

出　　处：《粘接》2015年第6期30-36,30,共7页Adhesion

基　　金：黑龙江省科学基金资助项目(C201335;A201205);黑龙江省哈尔滨市科技创新人才研究专项资金项目(2014RFXXJ066)

摘　　要：将玉米秸秆酶解木质素胺化改性后制得木质素胺，使用非等温DSC扫描方法对木质素胺／聚酰胺一环氧树脂体系的固化反应动力学进行了研究。分别通过Crane的n级反应法和M61ek的最大概然机理函数法确定了固化体系的反应机理函数，计算了固化反应的动力学参数值，拟合了固化反应动力学模型，并通过外推法优化了固化工艺。结果表明，Mdlek的白催化反应模型在5～20K／min的升温速率下与实验数值误差较小，求解的模型更适合描述该体系的固化反应过程；对于木质素胺／聚酰胺的固化体系来说，优选的固化工艺为90℃／2h十130℃／1h。In this study, the lignin obtained from enzymically hydrolyzed corn stalk was used to synthesize the lignin amine via Mannich reaction. Using the non-isothermal differential scanning calorinetry （DSC） analysis the curing kinetics of lignin amine/polyamine-epoxy resin blends was investigated, and using the n-order reaction method of Crane and the most probable mechanism functions of M 6 lek the reaction mechanism function of curing system was determined. Simultaneously, the curing kinetic parameters were calculated and the cure kinetic model was fitted. And the curing processing was optimized by extrapolation method. The results showed that the autocatalytic reaction model ofM 6 lek was close to the experiment data under the heating rate of 5-20 K/min and more suitable to characterize the cure reaction procedure. For the mixed curing system of lignin amine and polyamine, the optimized curing processing was determined as 90℃ for 2 h, and then 130℃ for 1 h.

关 键 词：环氧树脂 聚酰胺 木质素胺 非等温DSC 固化动力学 

分 类 号：TQ433.437[化学工程]