Effect of Silanol Treatment of Inorganic Filler on Dielectric Properties of Inorganic-Organic Composites

摘要

Improvement of the dielectric properties of inorganic-organic composites with 0-3 connectivity is attempted by silanol treatment of the inorganic filler surface. The inorganic filler has high relative permittivity and low dielectric loss, and is coupled with epoxy resin in the composites. Silanol treatment of the filler is performed by adding a small amount of water to a silane coupling agent, and the dielectric properties of the resultant composite are found to be comparable over a filler content range of 50-80 vol percent to the properties of composites fabricated using filler treated by toluene reflux. On the bash of the relationship between relative permittivity and inorganic filler content, it is shown that the experimentally determined properties of the composites are in good agreement with theoretical values calculated using Nielsen's complex rule.