Basic Study of the Hysteresis of a Nano Shock Absorbing Damper by Employing Mixed Lyophobic Coating Silica Gel

실리카 겔의 소수화 코팅 혼합 정도에 따른 나노 충격 흡수 장치의 이력 현상에 대한 기초적 연구

  • 문병영 (동서대학교) ;
  • 김흥섭 (인제대학교)
  • Published : 2003.04.01


A novel application of nano-technology in the field of engineering, called colloidal damper, is investigated. This device is complementary to the hydraulic damper, having a cylinder-piston construction. Particularly for colloidal damper, the hydraulic oil is replacedby a colloidal suspension, which is consisted from a nano-porous matrix with controlled architecture and a lyophobic fluid. In this experimental work, the porous matrix is composed from silica gel, with labyrinth architecture, coated by organo-silicones substances in order to achieve a hydrophobic surface. Water is considered as associated lyophobic fluid. The colloidal damper test rig and the measuring technique of the hysteresis are described. the influence of the hydrophobicity level upon the colloidal damper hysteresis is investigated, for silica gels with similar pores distribution. A certain desired shape of the hysteresis can be achieved by employing mixture of silica gels with different level of hydrophobicity and/or architecture. With these results, it is believed that the proposed damper can be designed and be applied to the desired structure.


damper;nano-technology;hysteresis;mixture of silica gels


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