Antibacterial Performance of Epoxy Resin Coatings with Carbon Fiber Reinforcement in High Voltage Pulsed Electric Field

doi:10.11902/1005.4537.2014.187

Journal of Chinese Society for Corrosion and protection

2015, Vol. 35

Issue (5): 438-446 DOI: 10.11902/1005.4537.2014.187

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Antibacterial Performance of Epoxy Resin Coatings with Carbon Fiber Reinforcement in High Voltage Pulsed Electric Field

Haiqiang LIN¹,Ke CHAI¹(

),Jinyi WU^1,²,Pengpeng YANG¹,Chunlei SONG¹

1. Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Material and Chemical Engineering College, Hainan University, Haikou 570228, China
2. Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China

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Abstract

Epoxy resin coatings reinforced with different amount of carbon fiber of varied length were prepared, and which then were covered with a top coating of insulation. The antibacterial performance of the above coatings, especially for flavobacterium was examined by high voltages of 11 and 15 kV respectively. It was observed that the sterilizing efficiency of epoxy resin coatings without carbon fiber were 90.82% and 93.18% by voltage 11 and 15 kV respectively. For the coating with 0.01%(mass fraction) of carbon fiber, the sterilizing efficiency increases slightly with the increasing fiber length by voltage 11 kV. The epoxy resin coatings with carbon fiber of 7 mm in length achieved a sterilizing efficiency up to 99.82%. While the epoxy resin coatings containing 0.03% carbon fiber of 3 mm in length exhibits the highest sterilizing efficiency 99.73% by voltage of 11 kV; whilst the sterilizing efficiency of the epoxy resin coatings increased with the increasing voltage. Therefore, the conductive epoxy resin coating may provide a new prospect for environment-friendly and energy-saving technique of fouling prevention in the relevant industrial processes, which adopt pulse electric field technology.

Key words: high-voltage pulsed electric field epoxy resin coating carbon fiber sterilizing efficiency

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	Haiqiang LIN
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Cite this article:

Haiqiang LIN, Ke CHAI, Jinyi WU, Pengpeng YANG, Chunlei SONG. Antibacterial Performance of Epoxy Resin Coatings with Carbon Fiber Reinforcement in High Voltage Pulsed Electric Field. Journal of Chinese Society for Corrosion and protection, 2015, 35(5): 438-446.

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https://www.jcscp.org/EN/10.11902/1005.4537.2014.187 OR https://www.jcscp.org/EN/Y2015/V35/I5/438

Fig.1 Sterilizing effect (a) and peak current (b) of different epoxy resin coatings at 11 kV voltage

Fig.2 Sterilizing effect (a) and peak current (b) of different epoxy resin coatings at 15 kV voltage

Fig.3 Microscopic images of epoxy resin coatings with 0.03% 3 mm (a) and 7 mm (b) carbon fiber additives

Fig.4 Raman spectra of the coating with 0.03% 3 mm carbon fiber additive before (a) and after application of 11 kV (b) and 15 kV (c) voltage

Fig.5 Raman spectra of 3 mm CF additive before (a) and after treatment at 11 kV (b) and 15 kV (c)

Table 1 Analytical data of Raman spectra of 3 mm CF treated at different voltages

Fig.6 SEM images of epoxy resin coatings with different kinds of carbon fiber incorporation at different voltages: (a, b) 0.01% 3 mm CF, 0 kV; (c) 0.01% 3 mm CF, 15 kV; (d) 0.01% 3 mm CF, 11 kV; (e) 0.03% 3 mm CF, 0 kV; (f) 0.03% 3 mm CF, 11 kV

Table 2 EDS results of square areas in Fig.6a and c (mass fraction /%)

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