广州化学2024，Vol.49Issue(4)：22-27,6.DOI:10.16560/j.cnki.gzhx.20240415
六亚甲基二异氰酸酯与丙烯酸羟乙酯反应动力学及热动力学研究
Kinetics and Thermodynamics Study of Hexamethylene Diisocyanate and Hydroxyethyl Acrylate Reaction
摘要
Abstract
This study investigates the kinetics and thermodynamic characteristics of the reaction between hexamethylene diisocyanate(HDI)and hydroxyethyl acrylate(HEA)in polyurethane synthesis.In terms of reaction kinetics,the reaction conversion rate data were obtained using the toluene-di-n-butylamine titration method,and both a second-order kinetic model and a Sato kinetic model were constructed to fit the experimental data.The results indicate that the reaction complies with the Van't Hoff approximation rule;the second-order kinetic model performs well at low conversion rates,while the Sato kinetic model exhibits better fitting advantages at high conversion rates due to the presence of autocatalysis.Regarding thermodynamics,adiabatic reaction calorimetry(ARC)was employed to characterize the reaction heat release,revealing a thermodynamic reaction order of 0.8 and an apparent activation energy of 57.51 kJ/mol for the reaction.This study provides a scientific basis for the safe,efficient,and environmentally friendly synthesis of polyurethanes.关键词
六亚甲基二异氰酸酯/丙烯酸羟乙酯/反应动力学/热动力学/绝热加速量热仪Key words
hexamethylene diisocyanate/hydroxyethyl acrylate/reaction kinetics/thermal dynamics/adiabatic reaction calorimeter分类
化学化工引用本文复制引用
周瑞翔,李韦龙,董永路,桂雪峰,胡继文,林树东..六亚甲基二异氰酸酯与丙烯酸羟乙酯反应动力学及热动力学研究[J].广州化学,2024,49(4):22-27,6.基金项目
广东省自然科学基金面上项目(2021A1515012334) （2021A1515012334）
