DOI QR코드

DOI QR Code

The Biological Functionality of Electro-Galvanized Steels Coated with a Hybrid Composite Containing Pyrethroid

  • Jo, Du-Hwan (Surface Technology Research Group, POSCO Technical Research Laboratories) ;
  • Kim, Myung-Soo (Surface Technology Research Group, POSCO Technical Research Laboratories) ;
  • Kim, Jong-Sang (Surface Technology Research Group, POSCO Technical Research Laboratories) ;
  • Oh, Hyun-Woo (Industrial Biomaterials Research Center, Korea Research Institute of Bioscience and Biotechnology)
  • Received : 2017.02.12
  • Accepted : 2018.03.12
  • Published : 2018.04.30

Abstract

The electronic industries require environmentally-friendly and highly functional materials to enhance the quality of human life. Home appliances require insect repellent steels that work to protect household microwave ovens from incurring damage by insects such as fire ants and cockroaches in tropical regions. Thus, POSCO has developed new types of functional steels, coated with an array of organic-inorganic hybrid composites on the steel surface, to cover panels in microwave ovens and refrigerators. The composite solution uses a fine dispersion of hybrid solution with polymeric resin, inorganic and a pyrethroid additive in aqueous media. The hybrid composite solution coats the steel surface, by using a roll coater and is cured using an induction curing furnace on both the continuous galvanizing line and the electro-galvanizing line. The new steels were evaluated for quality performances, salt spray test for corrosion resistance and biological performance for both insect repellent and antimicrobial activity. The new steels with organic-inorganic composite coating exhibit extraordinarily biological functionalities, for both insect repellent and antimicrobial activities for short and long term tests. The composite-coating solution and experimental results are discussed and suggest that the molecular level dispersion of insecticide on the coating layer is key to biological functional performances.

Keywords

References

  1. L. M. Robert, Insect Control in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim (2002).
  2. Pyrethrins General Fact Sheet, ational Pesticide Information Center, Nov. 2014, Web. 26 Apr. 2015, http://npic.orst.edu/factsheets/pyrethrins.pdf (2015).
  3. Permethrin, Resmethrin, Sumithrin: Synthetic Pyrethroids for Mosquito Control, United States Environmental Protection Agency, April 17 (2002).
  4. D. M. Soderlund, J. M. Clark, L. P. Sheets, L. S. Mullin, V. J. Piccirillo, D. Sargent, J. T. Stevens, and M. L. Weiner, Toxicology, 171, 3 (2002). https://doi.org/10.1016/S0300-483X(01)00569-8
  5. D. H. Jo and C. H. Kang, Composite resin coating composition for excellent antifungal activity and steel sheet coated with the composition, Korean Patent 1528051 (2015.06.04.).