Properties of Organic Coatings

The following requirements must be met for long-term corrosion protection  

The requirements (a) to (c) are obligatory for all types of coating and all objects to be protected for example, they are well known in the protection of steel structures. The objects discussed in this handbook are continuously in contact with electrolytes. For this reason in addition, requirement (d) is of great importance and is discussed in detail below. 

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Hansson, H.-C., A. Wiedensohler, M. J. Rood, and D. S. Covert, Experimental Determination of the Hygroscopic Properties of Organically Coated Aerosol Particles, J. Aerosol Sci., 21, S241-S244 (1990). 

Application of Electrochemical Methods for the Characterization of the Protective Properties of Organic Coatings on Metals... 

D. Vesely, A. Kalendova, P. Nemec, Properties of organic coatings depending on chemical composition and structure of pigment particles. Surf Coat. Tech. 204 (2010) 2032-2037. 

L. Fedrizzi, A. Bergo, F. Deflorian, L. ValentineUi, Assessment of protective properties of organic coatings by thermal cycling. Prog. Org. Coat. 48 (2003) 271-280. 

G. P. Bierwagen and T. K. Hay, The reduced pigment volume concentration as an important parameter in interpreting and predicting the properties of organic coatings, Progr, Org. Coat. 3, 281 (1975). 

Electrical properties of organic coatings vary by resin (also referred to as polymer) type. When selecting insulating varnishes, insulating enamels, and magnet wire enamels, the electrical properties and physical properties determine the choice. 

Microgels have also been detected as a component of alkyd resins, an early but still important binder of organic coatings [316-321] and are accountable for their ability to fill pores, fissures and other irregularities of the substrate such as wood. This property may be explained by the size of the microgels which prevents the paint becoming soaked up by the substrate. 

It is beyond the scope of this Chapter to discuss all kinds of various coating techniques, properties of the supports, properties of the coatings and the various fields of application of the composites in catalysis, separation techniques, materials science, colloid science, sensor technology, biocompatible materials, biomi-metic materials, optics etc. The scope had to be restricted to the fundamental properties of ultrathin organic layers on solid supports followed by some examples, outlining the benefit of the tailored functional surfaces such as SAM and polymer brushes for catalysis. 

Many published results on electronic transport properties of organic materials, where metal contacts are usually made by evaporation of metals, do not describe the quality of the organic/metal interface, and some exotic observed features may perhaps be ascribed to extrinsic effects such as metal diffusion. The relatively simple contact lamination technique may become an alternative, since it provides a means for establishing electrical contacts without the potential disruption of the organic material associated with metal evaporation. The method consists in bringing the organic layer into mechanical contact with an elastomeric element coated with a thin metal film, which can also be patterned. The contacts are robust and reversible... 

For the analysis of clear organic coatings, in particular on metal, placing the SI analyser in a position where it records the specularly reflected radiation - attenuated by two transmissions through the material to be analysed - is preferable. As the metal under the coating acts as mirror reflector, such systems have high reliability and low maintenance requirements, provided the reflection properties of the coated metal remain reasonably constant. 

A symposium jointly sponsored by the Division of Organic Coatings and Plastics Chemistry of the American Chemical Society and by the Division of Engineering Properties and Structures of the Society of Plastics Engineers, at the 168th Meeting of the American Chemical Society, Atlantic City, N. J., September 10-13, 1974. 

I. Deanin, Rudolph D., 1921- II. Crugnola, Aldo M., 1928- III. American Chemical Society. Division of Organic Coatings and Plastics Chemistry. IV. Society of Plastics Engineers. Division of Engineering Properties and Structures. V. Series American Chemical Society. Advances in chemistry series 154. 

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