摘要
采用酰基己内酰胺封端的聚酰亚胺（PI活化剂）与NaOH作为聚合反应引化体系,确定体系的反应温度为145-160℃之间,采用绝热法测定聚合反应的温升曲线,针对阴离子聚合尼龙6建立绝热反应动力学模型,从而计算得到反应动力学参数。当选择相对分子质量4000-6000左右的PI活化剂,其添量为0.05-0.10（占单体质量）时,确定反应级数为准一级、活化能在71.9-74.2kJ·mol^-1之间、指前因子在2.1×10^11-3.6×10^11 mol^1-n·s^-1范围内;并对反应过程进行模拟,模拟结果和试验聚合温升曲线有很好一致性,从而验证了模型具有一定的合理。
The polyimide activator（PI activator）of acyl caprolactam with end capping and NaOH were used as the catalytic system of polymerization reaction to determine that the reaction temperature of the system was between 145℃and160℃.The adiabatic method was used to determine the temperature rise curve of polymerization reaction,and the Adiabatic reaction kinetic model was established for the anionic polymerization of nylon 6to obtain the reaction kinetic parameters through calculation.When molecular weight of PI activator was about 4000 to 6000and the adding amount was 0.05 to 0.10（of monomer mass）,it was determined that the reaction order was the pseudo-first-order,the activation energy was between 71.9KJ·mol^-1 and 74.2kJ·mol^-1,and the pre-exponential factor was within the range of 2.1×10^11 mol 1-n·s^-1 to 3.6×10^11 mol^1-n·s^-1.The reaction process was simulated,the results had a good consistency with the test polymerization temperature rise curve which verified that the model was reasonable to a certain extent.
出处
《化工新型材料》
CAS
CSCD
北大核心
2014年第12期157-160,共4页
New Chemical Materials
基金
住房和城乡建设部科学技术计划项目(2014-K4-026)
