Study on curing kinetics of diallyl-bearing epoxy resin using sulfur as curing agent

被引:40
作者
Zhang, Guangpu [1 ]
Cheng, Jue [1 ,2 ]
Shi, Ling [1 ]
Lin, Xin [2 ]
Zhang, Junying [1 ,2 ]
机构
[1] Beijing Univ Chem Technol, Key Lab Carbon Fiber & Funct Polymers, Minist Educ, Lab Adhes & Situ Polymerizat Technol, Beijing 100029, Peoples R China
[2] Beijing Univ Chem Technol, Changzhou Inst Adv Mat, Changzhou 213164, Peoples R China
基金
中国国家自然科学基金; 国家高技术研究发展计划(863计划);
关键词
DADGEBA; Sulfur; Curing kinetics; Mechanism equation; DIFFERENTIAL SCANNING CALORIMETRY; CURE KINETICS; FLAME-RETARDANT; DSC; SYSTEM; DEGRADATION; COMPOSITES; PHOSPHORUS;
D O I
10.1016/j.tca.2012.03.012
中图分类号
O414.1 [热力学];
学科分类号
摘要
In this paper the curing kinetics of diglycidyl ether of 4,4'-diallyl-bisphenol-A (DADGEBA) using sulfur (S) as curing agent was studied by non-isothermal and isothermal differential scanning calorimetry (DSC). The kinetic mechanism equations were determined using autocatalytic models and nth-order reaction model. DSC measurement showed that the curing process of DADGEBA/S system contains two steps because of the double exothermic peaks in DSC curve. The model data simulation results indicated that the Sestak-Berggren (SB) model had a great distinction with the experimental data. Isothermal DSC analysis showed that the curing reactions followed Kamal's autocatalytic model when the reaction temperature was below 210 degrees C, and when the temperature was above 210 degrees C the nth-order model can be used to describe the curing reaction process of the DADGEBA/S system perfectly. The two kinetic equations in the entire reaction process of DADGEBA/S system are consistent with the two-step reaction mechanisms of the same system. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:36 / 42
页数:7
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