水在环氧大豆油改性环氧树脂涂层中的扩散性能
Diffusion Properties of Water in Epoxy Coating Modified by Epoxidized Soybean Oil
摘 要
在双酚A环氧树脂(DGEBA)-改性二乙烯三胺(DETA)体系中加入环氧大豆油(ESO), 制得了不同ESO含量(0~15.15%)改性的环氧树脂涂层; 用三点弯曲试验测试了改性涂层的临界断裂强度因子(KIC), 用静态浸泡试验得到了涂层的质量增加率-时间曲线, 测试了玻璃转化温度Tg, 并计算出了水分子在改性涂层中的扩散系数D。结果表明: 随着ESO含量的增加, 涂层的KIC先增加后降低, 而Tg和质量增加率则降低, D则先降后升; 当ESO质量分数为7.35%时, 改性涂层的耐水分子扩散性能最优。
环氧大豆油
水分子
扩散系数
epoxy coating
epoxidized soybean oil
water molecules
diffusion coefficient
Abstract
A series of epoxy coatings with different contents (0-15.15%) of epoxidized soybean oil (ESO) were prepared by adding ESO into the system of bisphenol A epoxy resin (DGEBA) and modified diethylenetriamine (DETA). Critical stress-intensity rupture strength factor (KIC) of the modified coating was tested according to three-point bending test and curves of mass gain and time were obtained by static immersing test, and the glass transition temperature Tg was tested. The diffusion coefficient D of water molecules in modified coating was calculated. The results show that KIC increased and then decreased, Tg and mass gain decreased gradually, and D decreased and then increased with the increase of ESO content. When mass fraction of ESO was 7.35wt%, the anti-water molecules diffusion coefficient of the modified coatings was the best.
中图分类号 TQ637
所属栏目 材料性能及其应用
基金项目 烟台大学青年基金资助项目(HY10Z11-02748)
收稿日期 2012/4/28
修改稿日期 2012/9/17
网络出版日期
作者单位点击查看
备注郑耀臣(1974—), 男, 山东莱州人, 讲师。
引用该论文: ZHENG Yao-chen,DUAN Wei,XIA Zhong-gao,QI Hui-min. Diffusion Properties of Water in Epoxy Coating Modified by Epoxidized Soybean Oil[J]. Materials for mechancial engineering, 2013, 37(5): 66～68
郑耀臣,段威,夏中高,齐慧敏. 水在环氧大豆油改性环氧树脂涂层中的扩散性能[J]. 机械工程材料, 2013, 37(5): 66～68
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参考文献
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【2】SHON M, KWON H. Effects of surface modification with amino branched polydimethylsiloxane (ABP) on the corrosion protection of epoxy coating[J].Corrosion Science, 2007, 49: 4259-4275.
【3】YONEZAWA N, KANOE T, SAIGO K, et al. Thermal degradation behavior of polyamides having 2-and 4-hydroxycinnamic acid dimer components[J].Journal of Polymer Science A, 1993, 31: 667-673.
【4】徐丽, 司徒粤, 胡剑锋, 等. 双重改性酚醛树脂的合成及性能研究[J].粘接, 2008, 29(10): 5-8.
【5】MCEWAN I, PETHRICK R A, SHAW S J. Water absorption in a rubber-modified epoxy resin, carboxy terminated butadiene acrylonitrile-amine cured epoxy resin system[J]. Polymer, 1999, 40: 4213-4222.
【6】程秀菊, 朱为玄. 钢纤维混凝土KIC计算公式初探[J].河海大学学报: 自然科学版, 200, 33(4): 452-453.
【7】GRAVE C, MCEWAN I, PETHRICK R A. Influence of stoichiometric ratio on water absorption in epoxy resin[J].Journal of Applied Polymer Science, 1998, 69: 2369-2376.
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