環氧樹酯/二氧化矽混成材料之製備及其在金屬防蝕上之應用研究

Preparation of Epoxy/SiO2 Hybrid Materials and Their Application as Anticorrosion Coatings

陳依湘(Yi-Hsiang Chen)

指導教授 ： 葉瑞銘

中原大學/理學院/化學研究所/碩士(2005年)

https://doi.org/10.6840/cycu200500324

摘要

中文摘要
本研究欲改善塗料之防蝕性，使用在塗料中應用廣泛、加工性良好的環氧樹酯，藉由溶膠-凝膠技術將二氧化矽導入，製成環氧樹酯/二氧化矽混成材料，將此材料塗佈在鐵片上，會在鐵片表面之間形成Si-O-Fe之共價鍵，提升環氧樹酯附著於鐵片的能力，在加上材料內部有緻密且疏水的矽氧無機網狀結構，此結構可延遲水氣附著於鐵片上，進而提升材料的抗腐蝕性。
研究中利用紅外線光譜儀(FTIR)與固態核磁共振儀(solid state NMR)說明環氧樹酯/二氧化矽複合材料內部具有網狀交聯結構;電化學防腐蝕測試實驗證明二氧化矽的導入，能有效增加材料的抗腐蝕性。並進一步探討二氧化矽含量的增加對此複合材料的熱性質、機械性質、光學性質及形態學的改變趨勢。

關鍵字

二氧化矽 ； 環氧樹酯 ； 金屬防蝕

並列摘要

Abstract
In this study, a series of epoxy resin-silica hybrid materials have been successfully prepared by performing the thermal ring-opening polymerization of epoxy resin and sol-gel reactions of tetramethoxysilane (TMOS) simultaneously with suitable silane coupling agent. The as-prepared epoxy-silica hybrid sol-gel materials are then characterized by FTIR, solid state 29Si-NMR, TEM and AFM.
Epoxy-silica hybrid materials in the form of coating at low silica content on cold rolled steel (CRS) coupons are found much superior in corrosion protection over those of neat epoxy resin based on a series of electrochemical measurements of corrosion potential, polarization resistance, corrosion current and impedance spectroscopy. The enhancement of corrosion protection effect of hybrid sol-gel coatings may be attributed to the increase of adhesion strength and surface hydrophobicity of hybrid sol-gel coatings based on the Scotch tape test, FTIR-RAS spectroscopy, contact-angle test. Effect of material composition on the thermal stability, mechanical strength and optical clarity of epoxy-silica hybrid materials are investigated based on the DSC, TGA, DMA, hardness test and UV-visible transmission spectroscopy, respectively.

並列關鍵字

Epoxy ； Anticorrosion

參考文獻

13. 李世陽，蔡宗燕, 奈米高分子複合材料新發展與應用,化工商情網(2001)

23. C. Jeffrey Brinker; George W. Scherer,Sol-Gel-Science chap3.

40. Z. H. Huang, K. Y. Qiu, Polymer, 38(1997) 521.

41. Z. H. Huang, K. Y. Qiu, Polym. Bull., 35(1995) 607.

57. Y. J. Lee, J. M. Huang, S. W. Kuo, J. S. Lu, F. C. Chang,，Polym. Sci., 46 (2005) 173–181