What is organic zinc primer?
WHAT ARE ORGANIC ZINC-RICH PRIMERS? Organic zinc-rich primers contain metallic zinc particles encapsulated in a variety of resins, the most common being epoxy resin. They are used as primers in multi-coat systems, providing outstanding protection to steel surfaces in a wide range of environments.
How do you do the MEK test?
The Solvent Rub Test is usually performed using methyl ethyl ketone (MEK) as the solvent. The MEK resistance or degree of cure applies to paint topcoats and primers. ASTM D4752 involves rubbing the surface of a baked film with cheesecloth soaked with MEK until failure or breakthrough of the film occurs.
When do you use zinc rich primer?
Zinc rich primers are used to protect steel surfaces from corrosion. It is one of the more effective means of sealing critical equipments from moisture, protecting it from rust and corrosion.
Is organic zinc better?
Inorganic zincs (IOZs) offer a high level of galvanic protection as there is direct zinc to metal contact. In an organic zinc (OZ) the metal is bound in an organic resin and does not provide the same level of galvanic protection. Like any primer types, no single zinc rich type is best for all conditions.
Can you mix acetone and MEK?
Safe Use. Both MEK and Acetone can cause drowsiness and dizziness.
How do you do a salt spray test?
Salt spray tests are conducted in a closed testing chamber. A salt water solution is applied to a sample via a spray nozzle. This dense salt water fog is used to imitate a corrosive experiment. After a period of time, which is dependent on the corrosion resistance of a product, the appearance of oxides is evaluated.
What’s the difference between inorganic and organic zinc rich primers?
Inorganic zinc-rich primers are typically repaired using organic zinc-rich primers, since the inorganic versions do not have strong adhesive binders and typically do not adhere well to one another once cured. Kaley Stanczyk is a Project Manager/Chemical Technician in KTA’s Analytical Testing Laboratory.
Which is the best type of zinc primer?
This makes zinc the ideal candidate for creating an optimal protective primer. SSPC Paint Specification No. 20 describes two types of zinc-rich coatings: Type I – Inorganic and Type II – Organic.
What kind of zinc is used in organic coatings?
Organic zinc-rich primers contain metallic zinc particles encapsulated in a variety of resins, the most common being epoxy resin. They are used as primers in multi-coat systems, providing outstanding protection to steel surfaces in a wide range of environments.
What are the different types of zinc rich paint?
SSPC Paint Specification No. 20 describes two types of zinc-rich coatings: Type I – Inorganic and Type II – Organic. There are three versions of Type I, based on the vehicle type, including Type 1A (inorganic post-cured); Type 1B (inorganic self-curing – water reducible) and Type 1C (inorganic self-curing – solvent reducible).
