Introduction to Coatings

Coating is a general term for a thin film covering something. It may be decorative, protective, or functional. Adhesives have a separate use because 

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A. Brandau, Introduction to Coatings Technology, Eederation of Societies for Coatings Technology, Blue Bell, Pa., 1990. 

Brandau AH (1990) Introduction to Coating Technology. Philadelphia Federation of Societies for Coating Technology. 

Relatively little attention has been devoted to the direct electrodeposition of transition metal-aluminum alloys in spite of the fact that isothermal electrodeposition leads to coatings with very uniform composition and structure and that the deposition current gives a direct measure of the deposition rate. Unfortunately, neither aluminum nor its alloys can be electrodeposited from aqueous solutions because hydrogen is evolved before aluminum is plated. Thus, it is necessary to employ nonaqueous solvents (both molecular and ionic) for this purpose. Among the solvents that have been used successfully to electrodeposit aluminum and its transition metal alloys are the chloroaluminate molten salts, which consist of inorganic or organic chloride salts combined with anhydrous aluminum chloride. An introduction to the chemical, electrochemical, and physical properties of the most commonly used chloroaluminate melts is given below. 

Urban, M.W. 2005. Stimuli-Response Polymeric Films and Coatings. Oxford University Press, New York. Ward, I. and Sweeney, J. 2005. An Introduction to the Mechanical Properties of Solid Polymers. Wiley, Hoboken, NJ. 

It is to be noted that Rathsburg (Refs 5 6) patented the use of Azidotetrazole and its derivatives in detonators and percussion caps after desensitizing these compds by coating with paraffin, resin or other techniques described in the patents (see above in the introduction to this article)... 

The factor that makes FAB-MS so different from EI-MS is that, in its usual form, the sample coating the probe tip consists of a solution or suspension in a relatively nonvolatile matrix liquid such as glycerol. This provides for a continually renewed surface exposed to the atom beam and thus spectra that are stable over a period of many minutes. No heating of the sample is required other than the localized energy implanted in the sample by the atom beam. Although complications may result from interactions with the matrix liquid, they are often less than, or certainly no worse than, such complications as thermal decomposition or ion molecule reactions, involved in other techniques for sample volatilization. In addition, FAB-MS is looking at condensed-phase systems similar to those investigated by NMR or IR. Thus perhaps the data are easier to correlate. Several reviews or introductions to the method have appeared (4, 7-9,13, 15-22). 

I have included an introduction to rubber elasticity in Chapter 4 because it follows logically from considerations of conformational changes in polymers. This material need not be taught in the sequence presented, however, and this topic, or all of Chapter 4, can be introduced at any point that seems best to the instructor. Chapters 5 through 7 are quite orthodox in their plans. 1 have, however, taken the opportunity to present alkyd calculations as an example of practice in the coatings industry and formulating thermosetting materials. 

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