Simulation of Energy Deposition in E-Beam Irradiated Polymers

IntroductionRadiation curing of polymers, by UV light or E-beam, is of growing interest in the state-of-the-art industry. Radiation curing is solvent free and leads to important energy and money savings. Improved materials characteristics, better control of doses and more accurate application allow radiation curing to take a big part of the surface coating industry and, for the last ten years, the polymeric and microelectronics (lithography) industry. But behaviors of polymers under radiant source is often empirically characterized. In this abstract, it is proposed a way to obtain accurate energy distribution from Monte Carlo simulations. For bulk or thin polymeric films, it is therefore essential to simulate energy distribution, in order to foresee what happens in the sample.ResultsCASINO is a single scattering Monte Carlo Simulation of electroN trajectory in sO lid -particularly designed for low energy beam interaction in a bulk and thin foil.

Application of Gyrotron Radiation for Coating and Welding

ABSTRACTThe availability of high power high frequency microwave sources of up to tens of kW has opened up important technological and industrial applications of microwave radiation. The particular use of gyrotrons for generating the high power microwaves is considered.The application of high power microwaves for fusing wear resistant coatings onto refractory materials is discussed, together with the brazing of ceramics, welding together of thick metal parts and the rapid heating and curing of polymers for high reliability long life environmental coatings.It is shown that the use of high power gyrotron radiation enables considerable improvements to be made on conventional technologies for high temperature processing of materials and enables the development of new and efficient processes.