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Conformai coating application is essential to enhance the lifetime and reliability of electronics made to operate in harsh environments. These polymer based coatings provide a barrier to air-borne contaminants from the operating environment thus preventing attack from moisture, aggressive chemicals, salt sprays, etc. While conformal coatings are mostly used on printed circuit boards (PCBs), they could...
A systematic study has been carried out to understand the morphological features developed for blends of wax/ethylene vinyl acetate (EVA) random copolymer. This system is commonly used in hot melt adhesives. It was determined that in all cases, wax enhanced the crystallization kinetics, an important consideration when used in hot melt adhesives to control the setting speed. A number of well characterized...
The comonomer effect on the structures of poly(vinylidene fluoride–hexafluoropropylene) P(VDF–HFP) copolymers was analyzed by Raman spectroscopy. The HFP content of these copolymers varies from 5% to 15%. Because of steric interactions involving the bulky HFP comonomers, the predominant chain conformation has extensively more gauche conformers in comparison to the neat PVDF. Based on both experimental...
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