Open AccessInfluence of double-percolation phenomenon on shielding effectiveness of Ni-based conductive silicone rubber
Author(s) -
Peng Li,
Shunhua Liu,
Chen Guang-Yun
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.3332
Subject(s) - silicone rubber , percolation (cognitive psychology) , materials science , electrical conductor , electromagnetic shielding , percolation threshold , percolation theory , composite material , natural rubber , shielding effect , silicone , electrical resistivity and conductivity , conductivity , chemistry , electrical engineering , neuroscience , biology , engineering
By measuring the electrical resistivity of RTV silicone rubber with Ni powder, t he percolation threshold of Ni-based conductive silicone rubber was determined. When N234 was filled in Ni-based conductive silicone rubber,double-percolation p henomenon was found other than percolation law. After fitting of the experimenta l results,the mechanism of the double-percolation phenomenon was presumed. As fo r the shielding effectiveness of high conductive silicone rubber, the result sh ows that it can be described well with the Schelkunoff theory.The influence of double-percolation phenomenon on shielding effectiveness of the rubber was investigated.