Curing kinetics and mechanisms of polysulfone nanofibrous membranes toughened epoxy/amine systems using isothermal DSC and NIR

被引：31
作者：
Li, Gang [1 ]
Huang, Zhibin [2 ]
Li, Peng [2 ]
Xin, Chunling [1 ]
Jia, Xiaolong [2 ]
Wang, Binghui [2 ]
He, Yadong [1 ]
Ryu, Seungkon [3 ]
Yang, Xiaoping [2 ]
机构：
[1] Beijing Univ Chem Technol, Coll Mech & Elect Engn, Beijing 100029, Peoples R China
[2] Beijing Univ Chem Technol, Key Lab Beijing City Preparat & Proc Novel Polyme, Beijing 100029, Peoples R China
[3] Chungnan Natl Univ, Dept Chem Engn, Taejon 305764, South Korea
来源：
THERMOCHIMICA ACTA | 2010年 / 497卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
Curing kinetics; Polysulfone nanofibrous membrane; Epoxy; Differential scanning calorimetry (DSC); Near infra-red (NIR); TRIFUNCTIONAL EPOXY SYSTEM; CURE KINETICS; ISOCONVERSIONAL ANALYSIS; INFRARED SPECTROSCOPY; RESINS; BEHAVIOR; BLENDS;
D O I：
10.1016/j.tca.2009.08.005
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Curing kinetics and mechanisms of polysulfone nanofibrous membranes toughened TGDDM/DDS were investigated by using isothermal DSC and NIR, and compared to those of TGDDM/DDS and PSF films toughened TGDDM/DDS. At early curing stage, the Curing rate of nanofibrous membranes toughened system was faster than those of other two systems, whereas the final conversion of toughened systems was lower than that of resin matrix. Most of the primary amine Was Consumed by gelation and the concentration of secondary amine reached the maximum around gelation. The faster consuming rates of primary and secondary amines in nanofibrous membranes toughened system resulted in higher concentration of hydroxyl groups and tertiary amines at gelation, which led to larger amounts of branching and crosslinking compared to resin matrix. The comparison of the results obtained from two methods showed that the epoxide conversion exhibited identical variations as a function of time, as well as the curing rate. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：27 / 34
页数：8
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