The Dictionary Says:|
A liquid mixture, usually of a solid
pigment in a liquid
vehicle, used as a decorative or protective
b. The thin, dry
film formed by such a mixture when
applied to a
The solid pigment before it is mixed with
Types Of Paint - Puget Sound Coatings sprays a variety of
common paint types including Alkyds, Zinc Primers, Epoxies and Polyurethanes,
along with a variety of other types such
as Acrylic Enamels, 100%
Solids, Plural Components, Non-Skids, and Waterborne. Each of the
different coating types are engineered to be the most proficient for their
intended environment and substrate for which they are designed.
Each of the different materials left alone or in combination with others can achieve multiple
looks and/or protection depending on how thick or thin it is applied, this is
measured in mils or 1/1000s of an inch here
in the United States (For
Further Explanation of Paint 'mils' Click Here). Below are some brief descriptions about some of
the more common material types that we use.
Alkyd - This material is considered single component (one can) which is
normally a blend of synthetic materials and various vegetable oils (linseed,
soya, tung, etc.) usually thinned with Mineral Spirits as the reducer. Once
applied, they can
withstand heat up to approximately 200 degrees Fahrenheit. Alkyds are available
in a wide range of colors and sheens, both as primers and finish coats, and can be used both indoors and out.
They are durable, but do not hold up to UV nearly as well as the polyurethane
finishes described below.
Zinc Primer - These primers are available in both organic & inorganic
types. Depending on the manufacturer, they can be single component, two
component or three component materials. The zinc, in dust form, is often times
the third component. Zinc primers usually come in gray or greenish-gray color
and are usually used as a base coat under epoxies and urethane topcoats. It's
common to use zinc coatings as a barrier for the steel because of it's
characteristic of sacrificing itself rather then letting the steel substrate
below rust. Depending on the formulation, zincs can handle heat ranging from 150
degrees to 750 degrees Fahrenheit. When applied up to one mil thick, it works
very well as a 'weld through' primer. In some cases near or on the water,
zinc primers have been applied as a one coat barrier without a top coat applied.
Epoxy - This is a two component material, whereas it uses a base portion
and a converter portion (sometimes called Catalyst or Hardener) The converter
reacts chemically to produce an extremely hard, tough film. Once the two
materials are mixed there is a limited pot life generally between four and
sixteen hours. Epoxies are engineered for both primers and finish coats. They
are available in a wide range of colors and sheens, have outstanding chemical
resistance, and are able to withstand heat up to approximately 250 degrees
Fahrenheit. They will chalk and yellow in time with exterior applications
because they do not have UV stabilizers.
Polyurethane - This is a two component material similar to epoxy. They
also have a
Component 'A' base, which typically has the color, and Component 'B'
catalyst, when combined will start a chemical reaction for curing. Polyurethanes are available in
extensive choices of colors and
sheens. They are
abrasive and chemical resistant and can withstand temperatures up to
approximately 225 degrees Fahrenheit. They also are extremely suited for UV protective
finish coats for exterior exposure.
Application - The more common types of paint
equipment to apply the coating materials described above are Airless, HVLP (high
volume low pressure), and Conventional. Most of these paint materials are
applied by us with an Airless Systems.
Airless is best suited for large projects, high solids type of paint materials,
and high paint film thickness type of projects. Typically, the paint material is
premixed prior to it being applied with an airless paint system. A specialized
type of an airless system is a
Pluralized Pump system. This type
mixes the components of the paint material in the correct ratio so no pre-mixing
is required. An airless pump sucks the coating from a container and, under high
pressure, pumps the material down the hose and to the gun. Conventional type
paint equipment has a
Pressurized Pot or cup, and delivers the paint to the
Gun with air pressure.
Each paint material type will be best suited for a different type of spray equipment.
The production rate, size of the project, type of paint material, environmental
considerations, and desired finish will all be determining factors in deciding
which type of spray equipment to use.
Puget Sound Coatings has a full time Quality Inspector on staff. Our inspector
uses Wet & Dry Film Gages to
determine the film thickness, Spark Testers
to determine if defects are present,
Profile Gauges to determine the surface condition prior to painting, and
Environmental Instruments to check for the correct
ambient conditions. All of these tools and more are used to meet the high
standards we have set for our goals.
We regularly work with project engineers and inspectors
to help achieve the desired result. Quality control before, during and after coatings have been
applied is essential for a successful painting project.
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