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Interesting facts from the industrial coating industry

We will gladly explain the most important technical terms in the coating industry to you in this short glossary.

Chemicals-resilience

Chemicals may damage coatings. Therefore, they must be able to resist the environment where they are used. Information on the substances that may come into contact with the coating is important for selecting a coating to match.

Corrosion resilience

Corrosion-resilient coatings protect surfaces from damage caused by corrosive media. They significantly extend the service lives of the coated parts. Corrosion protection may also be combined with other properties such as sliding and wear resilience.

This type of coating is used for light corrosion protection and, therefore, intended for normal industrial use and not for heavy corrosion protection.

Decorative properties

Our coatings are available in a large range of colors and effects. However, choice will be limited by type of coating.

Easy to clean

Easy-to clean coatings are designed to facilitate cleaning of coated surfaces. This saves resources such as cleaning agents and water.

FEP

The fluoropolymer FEP is a copolymer. It differs from PTFE by using another monomer.
Polymerization is performed with HFP and TFE, with FEP as the result. The effect of this change results in the interruption of the crystallinity of FEP compared to PTFE. (70% FEP vs. 98% PTFE). This gives FEP a much lower melting point, making it “melt processable”.

Film thickness (DFT)

Wet film thickness and dry film thickness (DFT) need to be differentiated from each other.
The thickness of the dry coating film is an important specification of the coating. This must be optimally matched to each application in order to achieve the best possible performance for a given paint application process.

Our coatings are usually applied in a range of 2-100 µm.

Insulating coating

Electrically insulating coatings prevent electrical charges from spreading along a surface. The surfaces, as well as the user, are protected from flashovers.

This kind of coating finds use in many areas, including the automotive, medical, and electronics industries. Special binders, fillers, additives, and pigments are selected to create a non-conductive surface. The opposite effect to produce electrically conductive surfaces is possible as well.

Mold release

Our coatings prevent the substances to be demolded from adhering to the surface. In the technical field, the coating systems are mainly based on fluoropolymers, silicone polyesters or sol-gel chemistry. This enables residue-free demoulding, often without the need for release agents.

PFA

In the polymer PFA, a perfluoroalkoxy group is added to the polymer chain, which means an even greater change. A perfluoropropyl group is usually added. Another group is a perfluoromethyl vinyl ether which produces the polymer MFA. The large added side group further reduces the crystallinity and, depending on the molecular weight, strongly influences the melt viscosity.

PTFE

PTFE is one of the best-known fluoropolymers in the non-stick coating sector. It is defined as a polymer containing carbon and fluorine.

The structure is linear and comprises thousands of CF2-CF2 groups. The extreme properties are due to the very strong carbon-fluorine bonds. PTFE is mainly a homopolymer, a polymer comprising only one monomer (TFE).

Sol-Gel

A three-dimensional mesh (gel) is formed from a colloidal suspension that comprises silica particles approx. 150-350 nm in size in the Sol-Gel process. The Sol is formed by hydrolysis and condensation reactions in combination with alkoxysilanes. Different sol-gel layers are obtained depending on the alkoysilane. (e.g., TEOS, TMOS, MTMS, DMDMS, etc.).

Temperature resilience

Some applications are used in a high ambient temperature. Coatings require a certain temperature-resilience to continue to perform their function.
ILAG coatings on an organic basis can withstand temperatures of up to approx. 250 °C [482 °F]. Sol-gel based coatings reach much higher temperatures of up to approx. 400 °C [752 °F].

Tribology

Bonded coatings should have the lowest possible coefficient of friction (COF), but also be very wear-resilient. There is a range of possible systems to be used to match the property that is at the focus from case to case.

This type of coating is used predominantly in the machinery and automotive industries.

VOC

VOC (volatile organic compounds) is the collective term for organic, i.e., carbon-containing, substances that evaporate easily and are thus released into the ambient air. Solvents and solvent-based paints contain VOCs and are therefore partly responsible for ozone pollution.

We at ILAG strive to positively influence the VOC balance and thus ozone pollution by constantly reducing solvents.