화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.11, No.4, 567-572, July, 2005
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Preparation and Properties of a Polyorganosiloxane Rubber Nanocomposite Containing Ultrafine Manganese Zinc Ferrite Powder
Doo Whan Kang†, and Hak Gue Yeo
  • Department of Polymer Science & Engineering, Dankook University, Hyperstructured Organic materials Research Center, Seoul 140-714, Korea
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α,ω-Vinyl poly(dimethyl-methylphenyl)siloxane prepolymer (VPMPS) and α,ω-hydrogen poly(dimethyl-diphenyl)siloxane prepolymer (HPMDPS) were prepared through an equilibrium polymerization. Mn-Zn ferrite fine particles were prepared through a solid state reaction. Polyorganosiloxane rubber (POXR) nanocomposites containing Mn-Zn ferrite and having. EMI shielding properties were prepared from the compounding of VPMPS, HPMDPS, catalyst, and fillers, such as Mn-Zn ferrite. Microwave absorbing properties and mechanical properties of the POXR nanocomposites were measured using a dielectric analyzer and UTM. The material constants of POXR nanocomposites containing Mn-Zn ferrite were also determined. The Mn-Zn ferrite containing POXR-90 nanocomposite exhibited a reflection loss of 11 dB at 1 GHz. The tensile strength and elongation of POXR-60 were 66 Kgf/cm2 and 340 %, respectively.
Keywords:polyorganosiloxane rubber;microwave absorbing properties;Mn-Zn ferrite;material constant
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