含联萘结构环氧树脂的合成及其固化动力学研究
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- 英文论文题名：Synthesis and Curing Kinetics of Epoxy Resin Containing Binaphthalene Structure
- 论文作者：郑寅 ; 王苏展 ; 张升晖 ; 田大听
- 英文论文作者：Yin Zheng ; Suzhan Wang ; Shenghui Zhang ; Dating Tian ; Hongyan Zhou ; College of Chemical and Environmental Engineering ; Hubei University for Nationalities
- 年：2016
- 作者机构：湖北民族学院化学与环境工程学院;
- 论文关键词：联萘结构 ; 固化动力学 ; 构效关系 ; 自催化
- 英文论文关键词：binaphthalene structure ; curing kinetics ; structure-property relationships ; autocatalysis
- 会议召开时间：2016-10-14
- 会议录名称：第二届湖北省化学化工青年科学家论坛摘要集
- 语种：中文
- 分类号：TQ323.5
- 学会代码：HXGC
- 会议名称：第二届湖北省化学化工青年科学家论坛
- 会议地点：中国湖北武汉
- 主办单位：湖北省化学化工学会
- 学会名称：《化学与生物工程》编辑部
- 页数：2
- 文件大小：101k
- 原文格式：D
- 会议级别：地方
摘要
为了研究环氧树脂的不同长度脂肪链结构因素对其固化动力学和固化物性质的影响,我们合成了两种以联萘环结构为分子骨架,以酯键链接两条对称的柔性脂肪链结构的环氧树脂,并通过核磁共振氢谱(~1H-NMR)、核磁共振碳谱(~(13)C-HMR)和红外光谱(IR)对其结构进行了表征。借助示差扫描量热法(DSC)对环氧树脂与4,4'-二氨基二苯甲烷(DDM)固化体系的主要固化反应动力学参数进行了推导计算,利用外推法计算了R1/DDM和R2/DDM固化体系的理论固化温度,通过Ozawa法计算出的R1/DDM和R2/DDM固化体系的反应活化能E_a分别为56.30k J/mol和56.88k J/mol,发现了具有长链结构的R1对固化反应有一定的阻碍作用,而短链结构的R2对固化体系有一定的自催化作用。研究结果表明随着环氧树脂脂肪链的长度的增加,其固化反应的E_a就越小。
In order to understand the effect of the varying the chain length of the initial resin chemistry oncuring kinetics and the final properties of the cured products, two resins both contained binaphthalene units and two symmetric flexible aliphatic ester chains terminated were synthesized and characterized by means of nuclear magnetic resonance hydrogen spectrum(~1H-NMR), nuclear magnetic resonance carbon spectrum(~(13)C-NMR) and infrared spectroscopy(IR). Both epoxy resins were cured with 4,4'-diaminodiphenylmethane(DDM) and their curing kinetic paramenters were performed by differential scanning calorimetry(DSC). The curing temperatureprocedure of R1/DDM and R2/DDM were designed according to the temperature obtained from extrapolated plots of T-β curve, the activation energy(Ea) of R1/DDM and R2/DDM curing system was 56.3KJ/mol and 56.88KJ/mol calculated by Ozawa's isoconversional method. The results indicated that the resin of long chain(R1) can delay the curing reaction while the resin of short chain(R2) can accelerate the curing reaction, the Ea of the curing reaction decreased with the increase of the length of the flexible aliphatic ester chains.
In order to understand the effect of the varying the chain length of the initial resin chemistry oncuring kinetics and the final properties of the cured products, two resins both contained binaphthalene units and two symmetric flexible aliphatic ester chains terminated were synthesized and characterized by means of nuclear magnetic resonance hydrogen spectrum(~1H-NMR), nuclear magnetic resonance carbon spectrum(~(13)C-NMR) and infrared spectroscopy(IR). Both epoxy resins were cured with 4,4'-diaminodiphenylmethane(DDM) and their curing kinetic paramenters were performed by differential scanning calorimetry(DSC). The curing temperatureprocedure of R1/DDM and R2/DDM were designed according to the temperature obtained from extrapolated plots of T-β curve, the activation energy(Ea) of R1/DDM and R2/DDM curing system was 56.3KJ/mol and 56.88KJ/mol calculated by Ozawa's isoconversional method. The results indicated that the resin of long chain(R1) can delay the curing reaction while the resin of short chain(R2) can accelerate the curing reaction, the Ea of the curing reaction decreased with the increase of the length of the flexible aliphatic ester chains.
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