Nanocomposite thin films for surface protection in electrical contact applications was written by Noel, Sophie;Alamarguy, David;Houze, Frederic;Benedetto, Alessandro;Viel, Pascal;Palacin, Serge;Izard, Nicolas;Chenevier, Pascale. And the article was included in IEEE Transactions on Components and Packaging Technologies in 2009.Category: esters-buliding-blocks The following contents are mentioned in the article:
Increased demands on reliability, operations in harsh environments, and miniaturization of elec. contacts justify research on totally innovating coatings. Such films require many specific properties such as proper conduction and mech. behavior. The approach reported here is based on the idea of associating a polymer matrix and a conducting charge. The polymer matrix was chosen to resist mech. degradation while the charge allows good conductivity The first results obtained by associating a carbon nanotube (CNT) network to a fluorinated polymer thin layer are presented here. Several characterization techniques such as XPS, Fourier transform infra red (FT-IR) and Raman spectroscopy have allowed the control of the various steps of the elaboration process. Films were deposited on cuprous coupons with a nickel underlayer and an electrodeposited gold final layer. Several matrixes were studied. The properties of these thin films were investigated in a ball plane contact configuration: first elec. and mech. characterizations show low values of contact resistance and friction coefficient The CNT network influence is investigated both at a macroscopic scale and at a microscopic one. This study involved multiple reactions and reactants, such as 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate (cas: 3063-94-3Category: esters-buliding-blocks).
1,1,1,3,3,3-Hexafluoroisopropylmethacrylate (cas: 3063-94-3) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Category: esters-buliding-blocks
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics