| 纳米Al2O3改性环氧胶黏剂和钢铁附着机理的研究 |
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| 引用本文： | 翟兰兰,凌国平,郦剑.纳米Al2O3改性环氧胶黏剂和钢铁附着机理的研究[J].浙江大学学报(自然科学版 ),2009,43(9):1709-1713. |
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| 作者姓名： | 翟兰兰 凌国平 郦剑 |
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| 作者单位： | (浙江大学 材料科学与工程系,浙江 杭州 310027) |
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| 基金项目： | 国家自然科学基金资助项目（50371077）. |
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| 摘 要： | 通过拉拔法测定纳米Al2O3改性环氧胶黏剂和钢铁之间的附着强度,并结合环氧胶的表面能参数测定以及X射线光电子能谱(XPS)分析,对纳米Al2O3提高环氧胶和钢铁附着力的机理进行研究.表面能测定结果表明,添加纳米Al2O3使环氧胶的极性增加；XPS能谱分析结果表明,当纳米Al2O3质量分数达到2%时,环氧胶中形成新的羧基极性基团；进一步研究发现,当纳米Al2O3质量分数为1%时未形成新的羧基基团,当纳米Al2O3质量分数为8%时单位接触面积上新的羧基基团的数目较2%时少,这与附着强度的变化规律是一致的.因此,纳米Al2O3改性的环氧胶黏剂与钢铁的附着强度的增强是由于Al2O3与环氧胶的相互作用形成了新的羧基极性基团．
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| 关 键 词： | 环氧胶 纳米Al2O3 钢铁 附着强度 |
Adhesion mechanism of steel and epoxy adhesive modified by nano-Al2O3 |
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| Zhai Lan-Lan,LING Guo-Beng,LI Jian.Adhesion mechanism of steel and epoxy adhesive modified by nano-Al2O3[J].Journal of Zhejiang University(Engineering Science),2009,43(9):1709-1713. |
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| Authors: | Zhai Lan-Lan LING Guo-Beng LI Jian |
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| Affiliation: | (Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China) |
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| Abstract: | The adhesion mechanism of steel and epoxy adhesive modified by nano-Al2O3 was investigated by pull-off adhesion strength, surface energy parameter measurement and X-ray photoelectron spectroscopy (XPS) analysis of epoxy adhesive. The surface energy parameter results indicated that the polarity of epoxy adhesive was increased with the addition of nano-Al2O3 in epoxy adhesive. The XPS results showed that polar carboxyl group was formed in epoxy adhesive film with the addition of 2% nano-Al2O3. Moreover, the amount of the polar carboxyl group per contact area decreased with 8% nano-Al2O3 added in epoxy adhesive while there was no new carboxyl group with 1% nano-Al2O3 in epoxy adhesive, which were consistent with the variation of adhesion strength of epoxy adhesive. The adhesion strength increase of steel and epoxy adhesive modified by nano-Al2O3 mainly resulted from the new carboxyl group formed by the interaction between nano-Al2O3 and epoxy adhesive． |
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| Keywords: | epoxy adhesive nano-Al2O3 steel adhesion strength |
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