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非等温DSC法研究复合材料用环氧树脂的固化反应
引用本文:丁江平,廖栋,范欣愉.非等温DSC法研究复合材料用环氧树脂的固化反应[J].材料导报,2011,25(14).
作者姓名:丁江平  廖栋  范欣愉
作者单位:中国科学院宁波材料技术与工程研究所,宁波,315201
基金项目:宁波市自然科学基金(2010A610188)
摘    要:采用非等温DSC研究了一种复合材料用环氧树脂体系的固化反应。采用n级反应模型和Malek等转化率法确定了固化反应动力学方程,通过外推法优化其固化工艺,测试优化后工艺下制备的树脂浇铸体的固化度和力学性能。结果表明,n级反应模型与实验值差别较大;采用Malek等转化率法判断固化反应按自催化反应机理进行,在2.5~15℃/min升温速率下,自催化模型计算曲线与实验曲线吻合较好;优化确定其固化工艺为70℃/2h+110℃/2h,在该工艺下制备的浇铸体固化度达98.51%,拉伸强度和弯曲强度分别为75.11MPa和128.10MPa。

关 键 词:环氧树脂  非等温DSC  固化反应  动力学模型  固化工艺  

Study on Curing Reaction of Epoxy used in Composites by Non-isothermal DSC Method
DING Jiangping,LIAO Dong,FAN Xinyu.Study on Curing Reaction of Epoxy used in Composites by Non-isothermal DSC Method[J].Materials Review,2011,25(14).
Authors:DING Jiangping  LIAO Dong  FAN Xinyu
Affiliation:DING Jiangping,LIAO Dong,FAN Xinyu(Ningbo Institute of Material Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201)
Abstract:The curing processing of one epoxy system used in composites was studied by non-isothermal diffe-rential scanning calorimetry(DSC) at different heating rates.The curing kinetic mechanism function and the kinetic parameters were determined using n order reaction and isoconversional method given by Malek respectively.The curing processing was optimized by extrapolation method,then it tested the degree of curing reaction and the mechanical properties of the casing bodies prepared in the curing processing.The r...
Keywords:epoxy  non-isothermal DSC  curing reaction  kinetic model  curing processing  
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