Optimization of free-radical initiation reactions in the electrical industry

Many insulating materials used today utilize free-radical initiation reactions to cure the material to the desired end state. Such materials include B-Staged unsaturated polyester composite materials, unsaturated polyester trickle varnishes, unsaturated polyester dip and bake varnishes, UV cure varnishes and adhesives, and various vinyl terminated synthetic polymers. Optimization of variables that can influence the curing process is critical to insure maximum performance properties, minimize cost and minimize potential environmental impact. This paper presents an overview of materials and processes utilizing free-radical initiation reactions in the electrical industry. The paper then describes specific examples of materials, processes and engineering methods used to optimize free-radical initiation reactions in selected applications