Citation:
M. Ghaemy, M. Bazzar, H. Mighani. EFFECT OF NANOSILICA ON THE KINETICS OF CURE REACTION AND THERMAL DEGRADATION OF EPOXY RESIN[J]. Chinese Journal of Polymer Science,
2011, 29(2): 141-148.
doi:
10.1007/s10118-010-1003-9
EFFECT OF NANOSILICA ON THE KINETICS OF CURE REACTION AND THERMAL DEGRADATION OF EPOXY RESIN
摘要:
Nanocomposites from nanoscale silica particles (NS), diglycidylether of bisphenol-A based epoxy (DGEBA), and 3,5-diamino-N-(4-(quinolin-8-yloxy) phenyl) benzamide (DQPB) as curing agent were obtained from direct blending of these materials. The effect of nanosilica (NS) particles as catalyst on the cure reaction of DGEBA/DQPB system was studied by using non-isothermal DSC technique. The activation energy (Ea) was obtained by using Kissinger and Ozawa equations. The Ea value of curing of DGEBA/DQPB/10% NS system showed a decrease of about 10 kJ/mol indicating the catalytic effect of NS particles on the cure reaction. The Ea values of thermal degradation of the cured samples of both systems were 148 kJ/mol and 160 kJ/mol, respectively. The addition of 10% of NS to the curing mixture did not have much effect on the initial decomposition temperature (Ti) but increased the char residues from 20% to 28% at 650C.
English
EFFECT OF NANOSILICA ON THE KINETICS OF CURE REACTION AND THERMAL DEGRADATION OF EPOXY RESIN
Abstract:
Nanocomposites from nanoscale silica particles (NS), diglycidylether of bisphenol-A based epoxy (DGEBA), and 3,5-diamino-N-(4-(quinolin-8-yloxy) phenyl) benzamide (DQPB) as curing agent were obtained from direct blending of these materials. The effect of nanosilica (NS) particles as catalyst on the cure reaction of DGEBA/DQPB system was studied by using non-isothermal DSC technique. The activation energy (Ea) was obtained by using Kissinger and Ozawa equations. The Ea value of curing of DGEBA/DQPB/10% NS system showed a decrease of about 10 kJ/mol indicating the catalytic effect of NS particles on the cure reaction. The Ea values of thermal degradation of the cured samples of both systems were 148 kJ/mol and 160 kJ/mol, respectively. The addition of 10% of NS to the curing mixture did not have much effect on the initial decomposition temperature (Ti) but increased the char residues from 20% to 28% at 650C.
-
Key words:
- Thermosets
扫一扫看文章
计量
- PDF下载量: 0
- 文章访问数: 890
- HTML全文浏览量: 1
下载:
