Abstract
A magnetic field was applied to a mixture of grinding chips and an unsaturated polyester prepolymer in order to produce a conductive resin. The magnetized chips formed a network structure, contributing to developing the electrical conductivity of the cured product. Various magnetizing methods were evaluated, and it was found that the cured resin with highest conductivity could be obtained by the magnetizing method of inserting the prepolymer mixture in a solenoid coil and holding a magnetizing current until the gel point of the mixture. The magnetization using electrical magnets in contact with the curing mixture was also found to be effective, if the magnets were properly arranged and supplied with a specific range of electrical current.
