A Study on the Properties and Preparation of Silicon-based Defoamer Used in the Purification of Wasted-Water Extruded in the Paper-Fabrication

제지공장의 폐수처리에 사용되는 실리콘계 소포제의 제조 및 물성에 관한 연구

  • Choi, Sang-goo (Department of Chemical and Food Technology, Howon University) ;
  • Lee, Nae-Taek (Department of Chemical and Food Technology, Howon University)
  • 최상구 (호원대학교 환경화공학부, 식품조리학부) ;
  • 이내택 (호원대학교 환경화공학부, 식품조리학부)
  • Received : 2005.01.18
  • Accepted : 2005.06.30
  • Published : 2005.10.10

Abstract

The water-soluble defoamers were fabricated by the mixing polyol, modified silicon resin, silicon resin and surfactant. For the defoamers, the various properties such as phase-separation time, viscosity and defoamerability were examined. The phase-saparation time of PPG mixtures was found to be PPG 400>PPG 3,000>PPG 1000. When PPG 1000 was mixed, mixtures represented the excellent defoamerability. The phase-saparation time of silicon resin mixtures was TSF-451-350>TSF-451-200>TSF-451-50. As more of high molecular silicon resin was mixed, the resulting mixtues showed reduced defoamerability. When the TSF-451-50 was mixed, the mixture's volume was increased because of the reduction of solubility. The modified silicon resin was smoothly dispersed in water, but the compatibility with PPG was not good. The defoamerability of surfactant was SPAN 20>SPAN 60>SPAN 80. SPAN 80 showed good miscibility for the silicon resin, but not good for YAS 6406 or PPG 1000.

Acknowledgement

Supported by : 호원대학교

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