Isothermic study of DGEBA-poly(acrylic acid-co-styrene) reticulation by differential scanning calorimetry (DSC)

被引：0
|
作者：
Cherdoud-Chihani, A
Mouzali, M
Abadie, MJM
机构：
[1] Lab Etud Mat Polymeres Mat Avances Organ, F-34095 Montpellier 5, France
[2] USTHB, Lab Chim Macromol, Alger, Algeria
来源：
EUROPEAN POLYMER JOURNAL | 1998年 / 34卷 / 3-4期
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D O I：
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中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The cure kinetics of copolymer acid/epoxy systems have been studied by differential scanning calorimetry (DSC) using isothermal runs. Many poly(acrylic acid-co-styrene) copolymers (SAA) were used, with different percentages of acid and polyacrylic acid (PAA) used as a hardening agent. The reaction is accelerated by a tertiary amine, triethyleneamine (TEA). The study was performed at different temperatures. The curing rate constant increases with the temperature at the maximum peak but the time decreases. A second picture is observed for the SAAS/DGEBA and SAA6/DGEBA. The PAA/DGEBA system has the lowest reactivity. The reaction is autocatalysed. Keenan's method allows us to determine the kinetic parameters (E-a, m, n, k, ln A)for each system studied. (C) 1998 Elsevier Science Ltd. All rights reserved.
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页码：543 / 552
页数：10
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