Presentation is loading. Please wait.

Presentation is loading. Please wait.


Similar presentations

Presentation on theme: "COATINGS."— Presentation transcript:


2 PAINT vs COATING synthetic resin or inorganic silicate polymer.
resistant to harsh environments superior performance (adhesion, toughness, and resistance to chemicals, UV, etc.) drying oils and/or natural resins oxidation/evaporation to form a weather resistant film continues to oxidize and breaking down.

3 Basic Ingredients Solvent (volatile) Resin/Binder (nonvolatile)
Pigments (nonvolatile)

4 Solvents Dissolve film former Reduce viscosity for ease of application
Control rate of cure Low molecular weight organic chemicals Examples include aliphatic, aromatic, and chlorinated hydrocarbons; alcohols; ketones; esters; glycol ethers; and water.

5 Resin (binder) Principal ingredient
Holds paint together and to the substrate Establishes chemical and physical properties Defines coatings generic type A "Vehicle" that turns to a "Solid" (nonvolatile)

6 Organic Coatings The resin is a carbon based polymer
(urethanes, epoxies, alkyds, acrylics, etc) R R R C C R R R

7 Inorganic Coatings The resin is not a carbon based polymer
Most utilize some type of silicate binder Zn Zn O O O Si O Si O O O Zn Zn

8 Type of Curing in Modern Coating Resins
Solvent evaporation Oxidation Chemical reaction Catalyzed film former Thermoplastic Thermoset Emulsion - water based

9 Pigment 1. Decorate, color, and hide 2. Protect 3. Provide consistency
Barrier Galvanic Inhibitive 3. Provide consistency 4. Provide film thickness 5. Control vehicle penetration into substrate

10 Types of Pigmented Paint

11 Additives Anti-fungus Anti-skinning Plasticizers Levelers
Thixotropic agents Accelerators Stabilizers

12 Life Expectancy of Coatings
design of bridge suitability of coating to bridge type environment quality of paint surface preparation application thickness

13 Coatings Review What are the 3 components of paint?
What are 3 type of protection they provide?

Download ppt "COATINGS."

Similar presentations

Ads by Google