Abstract
Charging behavior of adhesive tapes on peeling was investigated for various adherends. In order to measure amounts of charges accurately, a newly designed pre-amplifier was connected between a Faraday cage and an electrometer. The accurate observation process of charging of adhesive tapes was established. Five types of adhesive tapes were used including rubber-type, acrylic-typeand UV polymerization adhesives, and as adherends 11 different polymers, three metals and a silicon wafer were used. The charge amount of adhesives on peeling is correlated to the tribo-electric series of adherends. The plus charge of adhesive tapes on peeling was maximum at the minus end of tribo-electric series of adherends as PTFE or silicone rubber, and the minus charge maximum of adhesive tapes was at PMMA or PC which are plus end in tribo-electric series. Exceptions such as an acrylic adhesive with PC can be attributed to the contact charging between adherends and additive chemicals in adhesive tapes such as tackifier with low molecular weight. Flat charge distributions on adherends were observed in case of UV adhesive tape after UV irradiation, and this flat distribution can be attributed to no electric discharge of UV adhesive tape.
