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Syllabus
The Application of Paints, Lacquers and Varnishes
1. INTRODUCTION TO PAINTS, LACQUERS AND VARNISHES
1.1 List the basic constituents of liquid coatings.
1.2 Name polymer resins used in liquid coating formulations.
1.3 Explain how different polymers impart different properties on the coating.
1.4 Understand the role of pigments in the formation of paints and some varnishes.
1.5 Understand the contribution of solvents and diluents in making coating materials suitable for application.
1.6 Discuss the initial testing necessary to ensure that the coating material is suitable for application.
1.7 Understand the initial preparation of the coating material is correct prior to application.
1.8 Carry out standard tests to establish application quality criteria.
1.9 Explain the practical precautions to be taken when working with different types of coating material.
2. PRETREATMENT
2.1 Understand the particular problems associated with each type of substrate.
2.2 Explain the key coating criteria based upon the substrate.
2.3 Understand some of the problems in handling components prior to coating.
2.4 Discuss methods of mechanical cleaning and preparation.
2.5 Discuss the processes for effective cleaning prior to chemical or coating processes.
2.6 Define the purpose of conversion coatings.
2.7 Discuss the chemistry of phosphating on steel.
2.8 Discuss the different types of phosphate coating, explain their uses and be able to select the correct one for various products under different environmental conditions of use.
2.9 Describe the layout of a typical phosphating plant.
2.10 Discuss the use of chromate conversion coatings on different metals.
2.11 Discuss some basic theories of adhesion that apply to liquid coatings.
2.12 Discuss some of the problems that occur at a substrate/coating interface.
3. METHODS OF APPLICATION
3.1 Explain the process of choosing the correct method of coating application.
3.2 Understand the different manual processes that may be used.
3.3 Explain the processes of brush and roller application.
3.4 Explain the different types of spray application.
3.5 Understand a typical electrostatic application process.
3.6 Describe the different requirements needed for application of plural component systems.
3.7 Describe the different types of overspray filtration systems.
3.8 Understand the simple non-spray application processes.
3.9 Discuss factors that affect the choice of automatic application process for a particular purpose.
3.10 Discuss causes and avoidance of defects in dipped coatings
3.11 Explain the electrophoretic coating process.
3.12 Understand the difference between anodic and cathodic deposition.
3.13 Explain the autophoretic process.
3.14 Give the advantages and disadvantages of electro- and auto-phoretic processes.
3.15 Discuss the application and use of flow coating.
3.16 Describe curtain, roller and coil coating processes.
3.17 Explain the different electrostatic processes that can be used to automate coating application.
3.18 Outline the role of the robot in paint, lacquer and varnish application.
3.19 Understand the various material feed systems available.
3.20 Explain coating material circulating systems.
3.21 Be conversant with the hazards of handling high volumes of coating materials.
4. DRYING AND CURING
4.1 Explain the difference between drying and curing.
4.2 Describe various types of ovens.
4.3 Explain radiation curing.
4.4 Have a basic knowledge of the newer curing technologies.
5. TESTING APPLIED COATINGS
5.1 Know the various test methods used to assess coating performance.
5.2 Explain non-destructive test methods.
5.3 Explain destructive test methods.
5.4 Formulate a testing programme to assess key performance criteria.
6. SOLVING PAINT,LACQUER AND VARNISH PROBLEMS
6.1 Understand how to make a logical approach to solving coating problems.
6.2 Identify causes of problems in wet film applications and suggest solutions.
7. HEALTH, SAFETY AND THE ENVIRONMENT
7.1 Identify the factors involved in hazard assessment.
7.2 List sources of information on safety aspects of liquid coating applications.
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