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| Preparation and properties of silane coupling agent modified steel slag as functional filler for anti-corrosion coating |
| Wei-cheng Zheng1, Wei-cheng Xu2, Hao Zhang1,2,3, Hao-xuan Zheng4, Lin Wang5, Zheng-ming Cheng6, Yan-fei Ye7, Jun Lin8, Hong-ming Long1,2 |
1 School of Metallurgical Engineering, Anhui University of Technology, Ma’anshan 243032, Anhui, China
2 Key Laboratory of Metallurgical Emission Reduction and Resources Recycling (Anhui University of Technology), Ministry of Education, Ma’anshan 243002, Anhui, China
3 School of Civil Engineering and Architecture, Anhui University of Technology, Ma’anshan 243032, Anhui, China
4 Department of Chemical and Biochemical Engineering, Western University, London, ON N6A 3K7, Canada
5 Shanghai Baosteel New Building Materials Technology Co., Ltd., Shanghai 201900, China
6 Shougang Jingtang United Iron & Steel Co., Ltd., Tangshan 063200, Hebei, China
7 Zhanjiang Baosteel New Building Materials Technology Co., Ltd., Zhenjiang 524047, Guangdong, China
8 Guilin Hongcheng Mining Equipment Manufacture Co., Ltd., Guilin 541000, Guangxi, China |
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Abstract The chemical composition and high wear resistance of steel slag (SS) make it a potential alternative to traditional inorganic fillers. 3-Aminopropyltriethoxysilane (KH550) modified steel slag (MSS) was successfully prepared, and its application in epoxy (EP) anti-corrosion coating was introduced. Due to the grafting of silane coupling agent functional groups onto the surface of SS, MSS exhibited improved solubility in xylene organic solvent and reduced agglomeration. When the MSS content was 15 wt.%, the contact angle of the MSS/EP composite coating was 101°, and the abrasion was only 0.07 g, compared with 56.2° and 0.13 g, respectively, for the pure EP coating. The corrosion resistance of coatings was investigated by performing the electrochemical test (impedance) after immersion in a 3.5 wt.% NaCl solution. The electrochemical test results showed that the impedance modulus of the 15 wt.% MSS/EP composite coating at low frequency (Zf = 0.01 Hz) was approximately 1.08 × 107 Ω cm2, which was two orders of magnitude higher than that of the pure EP coating.
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Received: 10 April 2022
Published: 25 April 2023
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| Cite this article: |
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Wei-cheng Zheng,Wei-cheng Xu,Hao Zhang, et al. Preparation and properties of silane coupling agent modified steel slag as functional filler for anti-corrosion coating[J]. Journal of Iron and Steel Research International, 2023, 30(4): 708-716.
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2023, Vol. 30 
