From The Chemistry and Physics of Coatings, Second Edition
ALAN GUY
11.1 INTRODUCTION
In general, formulation involves a large matrix of issues, obstacles and compromises. Though firmly rooted in scientific understanding, its practice often seems more like an art form and the skills required cannot be easily or quickly transferred. However, the development of computerised formulation systems is generally making it easier for the inexperienced formulator to control the many variables.
11.2 BASIC PAINT FORMULATION
The components of paint are illustrated in Figure 11.1. It should be appreciated that not every paint will contain all of the types of ingredients shown. Also, the same ingredients combined at different levels can produce both paints and films with quite different properties.
Figure 11.1: Components of paint
The formulation process begins with establishing the criteria that will determine the choice of the raw materials and the way in which they are put together. Amongst these are:
| Performance | Paint has to provide the necessary degree of protection or decoration for the desired time period at the recommended film thickness. |
| Application methods | The way in which paint is applied must also be taken into account - for example, whether the paint is applied by hand brushing or by automated spray equipment. |
| Legislative issues | The selection of raw materials is dictated by existing and future legislation, particularly that relating to solvent emissions. The use of toxic materials is often not prohibited by legislation, but is voluntarily regulated by paint companies. |
| Cost | The situation rarely arises where cost is not important and a viable paint must... |
Products & Services
Sprayers and spray coating equipment refers to any component used in a variety of industrial spraying processes, including application tools, handling equipment, and supplemental machines. They are used in the process of atomizing coatings, paints, lubricants, solvents, deicing liquids, chemicals, and powders so they can be spray-applied to a surface.
Topics of Interest
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The paint and coating application areas comprise (1) architectural coatings or house paints, which includes waterborne latex, exterior and interior solvent-borne paints, lacquers, and wood and...
