1. About 环氧富锌底漆 Zinc Primerthe adhesion force

DreamZinc 30:Epoxy zinc rich primer DreamZinc 30 is a two component polyamine cured zinc rich epoxy paint with high solid and zinc powder content. When used in conjunction with other coatings, it can provide excellent corrosion resistance. Used as a primer in atmospheric environments, suitable for repairing carbon steel, inorganic zinc silicate coatings, and worn zinc base steel substrates.

DreamZinc 30Adhesion is the firmness of the paint layer and the surface of the painted object through the action of physical or chemical forces.DreamZinc 30Coating adhesion is the most important indicator for evaluating a coating or coating system. Is the premise of paint film with a series of properties.DreamZinc 30The methods of adhesion test include: drawing circle method, drawing method, drawing method, twist method and ASTM, etc

2. The role of the adhesion force

1) Good adhesion can effectively block theDreamZinc 30penetration of the external electrolyte solution into the matrix, and delay the formation of interfacial corrosion;

2) Strong interface adhesion can greatly prevent the diffusion of corrosion products-metal cations to the cathode area through the side of the phase;

3. Pull method (pull method)

Basis: color paint and varnish, pull open method adhesion test GB / T5210-2006, this method is more professional, need professional instrument: pull instrument

3.1. Pull steps

A. Instruments and equipment: the prepared sample (according to the design requirements, film thickness)

B. Testing instrument: sandpaper, transparent tape, cutting tool, aluminum alloy cylinder mold, adhesive, drawing instrument.

c. method of operation:

1) Aluminum alloy column with 240-400 mesh fine sandpaper sand, before use with solvent scrub to remove oil;

2) Solremoval shall be used at the test site;

3) Apply the adhesive to the aluminum alloy cylinder, press it on the surface of the test coating, and turn to 360 to ensure that all parts are attached with the adhesive;

4) The aluminum alloy cylinder is fixed on the coating surface with tape, and the adhesive should solidify for 3 hours at room temperature (subject to the weather temperature and environmental humidity on the day of the experiment);

5) Before the test, use the aluminum alloy cylinder to cut the coating material;

6) Cover the aluminum alloy cylinder with the tension instrument, turn the handle for testing, record the damage strength (MPa), and the damage state. Show the adhesion strength and state of the coating and the adhesion between the substrate, the coating, the coating and the glue, and the glue and the cylinder;

3.2. Description method of drawing the coating fault state:

A: Incohesive destruction of substrate

A: Incohesive destruction of substrate

B: Coin failure of the first paint

B / C: the interlayer adhesion damage of the first and second paint

C: cohesin failure of the second paint

C / D: the interlayer adhesion damage of the second and third paint

D: cohesin failure of the third paint

D / Y: interlayer adhesion between the last coating and glue

Y: the cohesive destruction of the glue

Y / Z: interlayer adhesion between glue and test rod

Z: Inin destruction of test rod

The strength of adhesion is expressed as N/mm2 (Mpa), which is shown on the common Elcometer 108.

The following figure is an example:

For example,DreamZinc 30if the tensile stress of a coating system is 13.17MPa, the first coating has 45% of the coating cohesion damage, and the last layer adhesion between the coating and the glue reaches 50% of the cylinder area, it can be described as: 13.17MPa, 45%D 55%D / Y.

4. Welcome to orderDreamZinc 30

We expect that in the future development process, products and services will be recognized by everyone, at the same time, establish a good Corporate Culture and social responsibility, create excellent value for employees and customers, for the society, the environment. In the future, we will always stay true to our original aspiration, forge ahead, continue to focus on the field of industrial anticorrosion, and strive to become a "trustworthy partner" in the eyes of customers. Protect your assets and enhance the value of your products through our professional and diversified services.

Epoxy zinc-rich primer is a two-component zinc-rich primer. The mechanical properties of epoxy zinc-rich primer are very superior, with strong impact resistance, good adhesion and good flexibility. Epoxy zinc-rich primer has strong salt spray resistance. An epoxy zinc-rich primer with a zinc content of 30% can withstand salt spray for up to 300 hours. Mainly used as anti-corrosion primer for containers, storage tanks, offshore drilling platforms, steel structures, ships and other places.

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