Coating Types and Characteristics
Credit: 4 PDH
Subject Matter Expert: Ramy Sayed Hamed, Quality Control and Assurance Engineer
In Coating Types and Characteristics , you'll learn ...
- The basic components of a coating system
- How additives affect the performance and application of coatings
- Fundamentals of hot dip galvanizing
Simply stated, a coating consists of a film-forming material dissolved in a solvent. The film-forming material is called a resin. When the resin contains pigments it is called a binder because it binds the pigment particles together and to the substrate over which it has been applied. Pigments are used to add color to the coating and can also enhance the coating's resistance to heat, abrasion and acid. The solvent is present in the coating to make it liquid for ease of application. After application, the solvent evaporates and the binder remains behind.
The chemicals selected to be used for the resin, pigment and solvent influence the properties of the coating in the can, as well as the properties during application and curing. Most importantly, the selection of resin, pigment and solvent will influence how well the coating performs in its intended service environment. For example coal tar resins have excellent moisture-resistance, but poor UV light resistance. Hybrid resins have been formulated to improve the overall performance of resins. In the example of coal tar, it is often combined with an epoxy resin to form coal tar epoxy, which has improved UV resistance relative to an unmodified coal tar resin.
Environmental regulations and safety concerns have had a large influence on the coatings industry in recent years. Legislation limiting the amount of volatile organic compounds (VOC's) in paint has required coating manufacturers to reformulate their coatings to meet environmental regulations. Additionally, the safety concerns associate with such toxic materials as lead and chromate has continuously challenged manufacturers to formulate high-performance coatings using alternative materials.
In this course, the student will study the types and characteristics of commercial coatings.
Specific Knowledge or Skill Obtained
This course teaches the following specific knowledge and skills:
- Basic components of a coating system including the resin, pigment and solvent
- Types of resins, including vinyl, acrylic, epoxy, phenolic and urethane
- Function of drying oils and the relative merits of each type.
- Purpose of pigments and the various types including inhibitive, sacrificial, hiding, color and extender
- Different types of solvents and their relative merits
- The function and types of miscellaneous additives, such as antiskinning agents, fungicides, emulsion aids and flow agents
- Types of zinc-rich coatings and their relative merits
- The impact of VOC's on coating manufacture and selection
- Types and applications for powder coatings and thermal-spray coatings
- Description of galvanizing and its advantages/disadvantages in various applications
Certificate of Completion
You will be able to immediately print a certificate of completion after passing a multiple-choice quiz consisting of 20 questions. PDH credits are not awarded until the course is completed and quiz is passed.
|This course is applicable to professional engineers in:|
|Alabama (P.E.)||Alaska (P.E.)||Arkansas (P.E.)|
|Delaware (P.E.)||Florida (P.E. Area of Practice)||Georgia (P.E.)|
|Idaho (P.E.)||Illinois (P.E.)||Illinois (S.E.)|
|Indiana (P.E.)||Iowa (P.E.)||Kansas (P.E.)|
|Kentucky (P.E.)||Louisiana (P.E.)||Maine (P.E.)|
|Maryland (P.E.)||Michigan (P.E.)||Minnesota (P.E.)|
|Mississippi (P.E.)||Missouri (P.E.)||Montana (P.E.)|
|Nebraska (P.E.)||Nevada (P.E.)||New Hampshire (P.E.)|
|New Jersey (P.E.)||New Mexico (P.E.)||New York (P.E.)|
|North Carolina (P.E.)||North Dakota (P.E.)||Ohio (P.E. Self-Paced)|
|Oklahoma (P.E.)||Oregon (P.E.)||Pennsylvania (P.E.)|
|South Carolina (P.E.)||South Dakota (P.E.)||Tennessee (P.E.)|
|Texas (P.E.)||Utah (P.E.)||Vermont (P.E.)|
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