Single Component Products

TT-P-1952E - Waterborne traffic paint

A-A-2886A - Solvent traffic paint

Relatively simple application

Plural Component Products

Epoxy Paint Methyl-Methacrylate paint More complicated application More durable than conventional paints

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TT-P-1952E (waterborne) is the

most commonly used coating in the U.S. industry.

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Properties of TT-P-1952E

Low VOC (volatile organic compound). Durable when applied properly. Simple to clean up with water. Excellent glass bead retention. Highly visible colors. Type I – dries in 10-15 minutes under 85% humidity. Type II – fast dry (less than 5 minutes). Type III – is a high-build acrylic. Non-hazardous and non-flammable.

Waterborne paint was developed in response to the rising demand for more environmentally friendly pavement marking products.

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General Precautions

Waterborne paint cannot be used in

galvanized, brass, aluminum, or steel

equipment; stainless steel only. Paint must be prevented from freezing

and should be stored between 50-90° F. Paint should not be thinned. Clean equipment after each use.

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Application Conditions

Material coverage varies due to equipment speed, surface porosity, and material viscosity.

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- Air temperature should be 45-50° F and rising.- Surface temperature should be greater than 55° F,

and

5° higher than the dew point.- Relative humidity should be less than 85% (or expect

longer dry times.

- Heating or painting above 110° F is not recommended. Surface must be visually dry.

Do not paint in windy conditions, unless windscreens

are used.

Common Problems

Paint bonds better to the asphalt than the asphalt does

to itself, causing premature pavement deterioration.

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Discoloration (iron staining) from iron present in

soil and/or pavement aggregate.

Bleed through of asphalt into white paint makes the

paint appear brown. A primer coat (200-250 SF/gal)

seals the oils from the coating.

Flaking and peeling of new coating due to insufficient

surface preparation.

Curing of Coatings

Paint temperature – the higher the temp, the faster the cure.

Pavement temperature – the higher the temp, the faster

the paint will cure.

Humidity – the higher it is, the slower the cure.

Wind speed – the higher the wind speed, the faster the

paint will cure.

Paint thickness – the thicker the paint, the slower the cure.

Markings are cured when all the chemical reactions stop. That means all the water and solvents have evaporated. The No-track condition usually comes sooner.

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CoatingsCoatingsIntercoat Adhesion

Intercoat Adhesion of waterborne traffic paints can be a problem if the application parameters and dry time recommendations are not followed.• For Fast Dry Waterborne paints, the minimum

application temperature is 50°F and rising.

• For both paints, the temperature must be at least 5°F above

the dew point and be maintained during the dry through.

• For Low Temperature Application Waterborne paints, the

minimum application temperature is 35°F and rising.

• First coat must be completely cured (24 hours) before

application of a second coat or new layer.

Terminology of Marking Materials

Shelf Life is the usable period when the integrity of the

paint is stable.

Solvents transport solid portions of the mixture (pigments,

resins, fillers) during manufacture and application.

Pigments are used to provide color, UV stability, wear resistance,

and hiding. They are the most expensive ingredient in the paint.

Fillers (or extenders) are relatively inexpensive, and are used

to give paint its bulk and increase durability.

Additives are used to prevent ingredients from settling and

skinning in the container, as well as aid drying, disperse

pigments, prevent freezing, adhesion, etc.

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Compatibility of Coatings

New coating must be compatible with existing coating.

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