脱水蓖麻油聚酰胺-环氧树脂体系的固化反应动力学研究  

Curing Kinetics of Dehydrated Castor-oil Polyamide-epoxy Resin System

作　　者：许蓉[1] 谢晖[1] 黄莉[1] 

机构地区：[1]南京工业大学化学化工学院,江苏南京210009

出　　处：《林产化学与工业》2009年第2期59-62,共4页Chemistry and Industry of Forest Products

摘　　要：由脱水蓖麻油制得聚酰胺固化剂,并用差示扫描量热法(DSC)研究了该固化剂与环氧树脂体系(DCOPA-EP)的固化反应动力学。综合采用Kissinger、Crane和Malek等方法探讨DCOPA-EP固化体系的固化动力学模型参数。由Kissinger方法算得表观活化能(Ea)55.94kJ/mol,频率因子(A)1.61×107s-1;并经过分析验证,Malek法所得自催化反应模型(反应级数m=0.135,n=0.766)比Crane法的n级反应模型(反应级数n=0.90)更适合DCOPA-EP固化体系。Polyamide curing agent was prepared from dehydrated castor oil. Differential scanning calorimetry （DSC） was used to determine the curing kinetics of dehydrated castor-oil polyamide （DCOPA） and epoxy resin （EP） curing system. The curing models and kinetic parameters of DCOPA-EP curing system were calculated by Kissinger, Crane, and Malek＇s methods respectively. The results calculated by Kissinger＇s method showed that activation energy of the system was 55.94 kJ/mot, reaction frequency factor was 1.61×10^7 s^-1. Analysis of the reaction order calculated by Crane＇s method （ n = 0.90） and Malek＇s method （m =0. 135, n = 0. 766） respectively indicated that the autocatalytic model from Malek＇s method could better describe the DCOPA-EP curing system than the n order model from Crane＇s method.

关 键 词：脱水蓖麻油 聚酰胺 环氧树脂 差示扫描量热法 固化动力学 

分 类 号：TQ351.4[化学工程] TQ323.5