Acid-resistant paint – what to look for when choosing a composition, and how to prepare the base

Selecting the appropriate acid-resistant paint is essential when working with areas that are exposed to harsh chemicals. This particular coating is essential for use in commercial and industrial settings because it prolongs the life of surfaces while simultaneously providing protection.

It’s critical to comprehend appropriate surface preparation and composition before beginning to apply acid-resistant paint. Making the incorrect product choice or neglecting necessary preparation can result in expensive damage and ongoing maintenance. Let’s examine the most important things to think about when choosing an acid-resistant paint and how to guarantee a solid, long-lasting finish.

It’s important to consider the paint’s chemical makeup when selecting acid-resistant paint to make sure it can withstand the particular acids it will come into contact with. For durability and resistance, heed the manufacturer’s recommendations. An equally important step is base preparation, since a clean, level surface guarantees good paint adhesion and expected performance. You can choose the best product and give your surfaces long-lasting protection by following these recommendations.

The main types of compositions and features of their application

There are many primary product categories on the market, with composition being the primary difference; preparatory steps are essentially the same and rely on specific ground characteristics.

Paint review

The most well-known composition type, enamel HV-785, was used extensively during the Soviet era. The majority of surfaces that are subjected to harmful chemical influences are still finished using this composition.

The composition is typically sold in large packaging because large businesses and organizations are the primary users.

GOST 7313-75 standards reflect all the qualities and requirements that this composition needs to have.

Let’s examine each of these products’ primary attributes:

  • The paint is based on a mixture of alkyd and polyvinyl chloride chlorinated resin mixed with organic solvents, pigments and plasticizers are added to the composition to improve the quality of the product and increase the resistance of the protective layer to negative factors.
  • The solution should be used as the top protective layer in a complex protective coating. That is, if you apply paint on an unprepared base, the manufacturer does not guarantee the provision of high operational properties. Only strict adherence to technology will ensure the maximum degree of protection for certain structures.
  • Anti-acid paint is intended for treating equipment, various metal surfaces, as well as concrete and plastered substrates inside buildings and production workshops.
  • A completely dried surface has high resistance to acids, various solutions of alkalis and salts, as well as aggressive gases. In this case, the temperature of the bases when exposed to unfavorable factors should not exceed 60 degrees.
  • According to standards, enamel must be applied to the surface by spraying, so the use of brushes and rollers for painting is not allowed.

Counseling! Finding the most dependable coating type should be done by an expert. Although you can complete the task on your own, it won’t hurt to seek advice from a qualified staff member.

Varnishes and two-component compositions

Paint HV-785 is painted over varnish HV-784 as a primer. The GOST 7313-75 standards also govern its qualities and attributes. By using this composition, you can increase the main plane’s adhesion and strengthen the base, which will increase the protective layer’s dependability and durability.

Varnish HV-784 finds application in an extensive array of works.

Epoxy paints with two components that contain hydrocarbon resins are a new type of coating that is resistant to acidic effects.

The following characteristics apply to this product group:

These paints are not very common because of their much higher price.

  • The composition is supplied in the form of two components that must be mixed completely immediately before use. Partial mixing is undesirable in order to avoid disturbing the proportions and deteriorating the properties of the finished composition. It is better to mix with a drill with a mixer at low speeds to avoid splashing.
  • Application can be made in any convenient way: both with a brush or roller, and using a spray gun. It all depends on the specifics of the decoration and volume of work. (Cm. Also article spray for painting: Features.)
  • It is necessary to work with the composition using protection products, at least gloves, since when it enters the skin, paint can cause irritation and even an allergic reaction.
  • The resistance of the protective layer to adverse effects is very high, you can use certain structures a day after work.

The surface is ready for use in a day.

Crucial! The ability to wash surfaces with detergent additions without running the risk of damaging the base and violating its properties is another benefit of acid-resistant solutions.

Features of surface preparation

Numerous guidelines exist that ought to never be broken, including:

  • Anti-acid paint should never be diluted, this directly affects the protective properties and may cause subsequent alterations.
  • You cannot start work if rain is forecast – drying should take place at normal humidity without direct exposure to water.
  • Never paint wet surfaces, the composition will not adhere to such surfaces.
  • The surface must be cleaned of dirt, various stains. If the base is too loose, it is also not recommended to carry out work.
  • The solution should be applied at a temperature of +5 to +30 degrees. Too low, as well as too high a temperature is highly undesirable.

Work is completed using the algorithm listed below:

  • First, the surface must be cleaned of dirt, if there are stains of bitumen or oil products on it, they should be removed. You also need to monitor the humidity, if necessary, dry it with a hair dryer or heat gun.
  • Next, a primer layer is applied under the paint, which strengthens the base and improves the adhesion of the surface.

An essential component of the work process is primer.

  • The instructions prescribe to carry out the treatment in at least two layers. It is best to apply even three.
Aspect Details
Composition Look for paints with a high concentration of resistant polymers or resins that can withstand acids.
Surface Preparation Ensure the surface is clean, dry, and free from dust, oils, or other contaminants before applying the paint.
Application Method Use a brush, roller, or sprayer designed for the type of paint you"re using. Apply evenly and allow proper drying time between coats.
Durability Check if the paint offers long-lasting protection against chemical exposure and wear.
Coverage Verify the paint"s coverage area to ensure you purchase the right amount for your project.

Selecting the ideal acid-resistant paint requires more thought than simply picking something off the shelf. It’s critical to take into account the particular requirements of your project, including the kind of surface you’re protecting and the degree of chemical exposure it will experience. You can choose a composition that offers enduring protection by being aware of the qualities of the various types.

The base’s preparation is just as crucial. Establishing a dry, dust-free atmosphere, fixing any damage, and properly cleaning the surface are all prerequisites for a long-lasting and successful paint job. Ignoring these steps can shorten the paint’s lifespan and affect its performance.

Ultimately, you will save time and money by choosing wisely and preparing thoroughly, which will also strengthen your surfaces’ resistance to harsh chemicals and prolong their lifespan. It’s always worthwhile to make the appropriate material investments and to take your time doing the task correctly.

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