The Role of Crosslink Density in Influencing the Electrical Resistance Behaviour of Polymeric Coatings

✍ Scribed by Rais-Ali, Abdelhamid ;Richardson, Melvin O. W.

• Book ID: 104527083
• Publisher: Wiley (John Wiley & Sons)
• Year: 2007
• Tongue: English
• Weight: 320 KB
• Volume: 12
• Category: Article
• ISSN: 0007-1641
• DOI: 10.1002/pi.4980120204

✦ Synopsis

Abstract

Paint films used to protect metalic surfaces are commonly polymeric in nature. The extent of protection offered by film depends on many factors including the characteristic electrical resistance behaviou and its effect on impeding local electrochemical processes. In the present work a range of polymeric coatings have been produced with systematically varied crosslinked density using an ultra‐violet light curing technique. Their electrical resistance behaviour in an environment of varying concentrations of KC1 electrolyte has been examined. It is demonstrated that there are signs of the beginnings of a mechanism changeover from “D‐type” to “I‐type” behaviour at higher levels of crosslink density thus giving some tenuous support to previously unproven hypotheses in this area.