Coating Types

Objective

To understand the importance of pot-life and induction periods when using two-part paints and coatings. Definition of pot-life is a maximum time period given by the material supplier on two-part products after the initial mixing. After this time period, there is a danger that the mixed and applied product will not perform correctly.

Objective

To understand that coatings must be stored in the correct manner prior to use.

• Basic storage details will be on product data sheets.
• All products should be suitably stored.
• A dedicated paint store should always be available and paints should not be mixed with general consumables.

Objective

To understand the importance of batch numbers and the need to record these accurately, the general configuration generally used and meaning of the units.

• Batch numbers should be visible on every tin of paint.
• The batch number is a unique signature.
• Product data manuals should detail the batch number and how to understand batch numbers.
• Record all batch numbers prior to use.

Objective

To understand that paints and coatings are liquid materials made up of volatile and non-volatile components.

• Volume solids are also referred to the volume of solids, solids by volume etc.
• All coatings have a defined volume solids content.
• Volume solids should be found on product data sheets.
• Volume solids are required to calculate the wet film thickness and spreading rate.

Objective

To understand how paint coverage is calculated. To gain basic knowledge of theoretical and practical spreading rate of paints and coatings. The Paint coverage rate is essential for:

• Tendering a contract.
• Ordering the correct quantity of coating material.
• Using the correct volume of coating material.

Objective

To understand the difference between compatibility and incompatibility in relation to industrial coatings. To appreciate that not all generic coatings can be applied on top of each other, and provide long-term performance.

• All coatings have some solvent content.
• Solvents reduce viscosity and aid application.
• Solvents are already mixed in the paint.
• Manufacturers usually recommend no more than 5% addition solvent.
• All solvents have different degrees of strength.

Objective

To understand the basic constituents and properties of coatings used for corrosion control, and to gain an insight into coating systems.

The first part of the training unit deals with basic chemistry.

Objective

To understand how to read and understand the manufacturer's product data sheet and the importance of using the product within their guidelines.

• All coatings have product data sheets.
• Do not consider using a product until you have read and understood the data sheet.
• Do not confuse the general data sheet with the Health and Safety data sheet.

Objective

To understand the difference between single and two-part coating materials by the protective coatings applicator.

• The protective coating applicator will generally apply one and two-part coatings.
• Three-part products are also available.

Objective

To understand the importance of paint mixing of both one and two part paints and material handling.

• Paint mixing can be hazardous.
• Review product data sheets before work commences.
• All paints require some form of mixing.
• Some paints contain heavy pigments and additional mixing will be required.