| Abrasion Resistance |
The ability of a coating to resist degradation
due to mechanical wear. |
| Abrasive Media |
The material used in abrasive blasting to
remove surface contaminants. Examples of abrasive media are sand, iron shot, crushed iron
slag, glass beads or ground nut shells. |
| Accelerated Weathering |
A test designed to simulate but at the same
time intensify and accelerate the destructive action of natural outdoor weathering. |
| Accelerator |
A substance used in small proportions to
increase the speed of a chemical reaction. Accelerators are often used in the paint
industry to hasten the curing of a coating system. |
| Acrylic Latex |
An aqueous dispersion of acrylic resins. |
| Acrylic Resin |
A clear resin attained by polymerizing various
acrylic monomers either alone or in combination. |
| Activator |
The curing agent of a two component coating
system. |
| Adhesion |
The degree of attachment between a paint film
and the underlying material to which it is in contact (substrate). |
| Adsorption |
Process of attraction or attachment to a
surface. The retention of foreign molecules on the surface of a substance. |
| Air Cap (Air Nozzle) |
Perforated housing for directing the atomizing
air at the head of a air spray gun. |
| Air Drying |
The most common form of curing a coating in
which drying takes place by oxidation or solvent evaporation by simple exposure to air
without heat or catalyst. |
| Air Entrapment |
The inclusion of air bubbles in liquid paint
or a paint film. |
| Airless Spray |
A spraying system in which paint is atomized
using high hydraulic pressure rather than compressed air. |
| Alcohol |
A group of solvents of relatively high
evaporation rate but with fairly low solvent strength. Methanol, ethanol and isopropyl are
common alcohols. |
| Aliphatic Hydrocarbons |
A class of organic solvents which are composed
of open chains of carbon atoms. Aliphatics are relatively weak solvents. Mineral spirits
and VM & P Naphtha are aliphatic solvents. |
| Alkali |
An aqueous liquid which has a pH value of
between 7 and 14. A base or caustic material. |
| Alkyd Resin |
Resins prepared by reacting alcohols and fatty
acids. Widely used in general purpose coatings. |
| Alligatoring |
Surface imperfections of a coating film having
the wrinkled appearance of alligator skin. |
| Ambient Temperature |
Room temperature or the existing temperature
of the surroundings. |
| Amine |
Materials often used as curing agents for
epoxy coatings. |
| Anchor Pattern |
The surface profile generated by abrasive
blasting or some power tool cleaning. The distance between peaks and valleys of the blast
profile. |
| Anode |
The positive terminal of an electrical source.
In a corrosion cell, the anode is the electrode that has the greater tendency to go into
solution of the point at which corrosion occurs. |
| Aromatic Hydrocarbons |
A class of relatively strong organic solvents
which contain an unsaturated ring of carbon atoms. Examples are benzene, toluene and
xylene. |
| Asphalt |
A black resinous material of petroleum origin. |
| ASTM B 117 |
Salt Fog Spray - Atomized 5% sodium chloride
solution at 95°F |
| ASTM D 4258 - 83 |
Standard practice for surface cleaning
concrete for coating.This practice includes surface cleaning of concrete to remove grease,
dirt, and loose material prior to the application of coatings. Procedures include broom
cleaning, vacuum cleaning, air blast cleaning, water cleaning, detergent water cleaning,
and steam cleaning. |
| ASTM D 4259 - 83 |
Standard practice for abrading concrete.1.
This practice includes surface preparation of concrete to prepare the surface prior to the
application of coatings.2. This practice is intended to alter the surface profile of the
concrete. |
| ASTM D 4260 - 83 |
Standard practice for acid etching concrete.1.
This practice includes surface preparation of concrete to prepare the surface prior to the
application of coatings.2. This practice is intended to alter the surface profile of the
concrete. |
| ASTM D 4261 - 83 |
Standard practice for surface cleaning
concrete unit masonry for coating.1. This practice covers surface cleaning of concrete
unit masonry to remove dust, dirt, mortar spatter, oil, and grease prior to the
application of coatings. Procedures include vacuum cleaning, air-blast cleaning, water
cleaning, detergent water wash, steam cleaning, and mechanical cleaning.2. This practice
is NOT intended to alter the surface profile of the concrete masonry units but to clean
the surface. |
| ASTM D 4262 - 83 |
Standard test method for pH of chemically
cleaned or etched concrete surfaces.1. This test method covers the procedure for
determining the acidity or alkalinity of concrete surfaces prepared by chemical cleaning
or etching prior to coatings. |
| ASTM D 4263 - 83 |
Standard test method for indication of
moisture in concrete by the plastic sheet method.This test method is used to indicate the
presence of capillary moisture in concrete. |
| Barrier Coat |
A coating used to isolate a paint system
either from the surface to which it is applied or a previous coating for the purpose of
increasing adhesion or insuring compatibility. |
| Binder |
The nonvolatile portion of the vehicle of a
coating which holds together the pigment particles. |
| BITUMASTIC® |
BITUMASTIC® is a Century + year old trade
name that has now become synonymous with long term protection from water penetration.
Typically made from coal tars and blends of resins, such as epoxy, these products have
been used to line water tanks, sewage tanks, coat the interior and exterior of buried pipe
and for protection of equipment subjected to water immersion. |
