High-temperature paints

This family of products which is intended as much for the professionals and industrialists, as for the private individuals, are part of what we call the technical paint, because they are paints which are intended to fill certain roles and which have particular properties, more than particular aspects.
High-temperature paints, as the name implies, are able to withstand more than conventional paints, in unordinary, high or extreme temperature conditions.

What happens when a conventional paint is applied to a pipe whose surface temperature can rise above 300°C ? Various defects can occur, i.e. the temperature rise can cause the dry paint film to crack or turn black. The colors of the pigments can also be denatured or disappear altogether.

This is why only pigments that are resistant to high temperatures are used. Often, these are simple colors, and also metal-based pigments.
Some pigments can resist up to 800° C.
Other pigments, on the other hand, are discolored as soon as they exceed 200° C.

High-temperature paint

To create coatings that can withstand high levels of temperature, it has been found that thin, single-component paints are the most resistant.
On the contrary, thick, tough paints such as two-component polyurethanes are subject to cracking and crazing.
On the other hand, the composition and choice of the polymer resin, which make up the product, is crucial to resist not only blackening, but also ignition.

There are many products classified as temperature paints.
For example, baking paints, brake paints, fire resistant paints…

When looking for a paint resistant to high temperatures, it is already necessary to know the temperature reached by the support: it can be 250, 300 ° C, or even much more. But this has no meaning, if we do not compare with the duration of exposure and frequency.
Some paints can resist 250°C for a few seconds, which is quite enough, while a real high temperature paint can resist 300°C for several minutes.

To summarize, there are two things that are taken into account to say that a paint can withstand the temperature : the good resistance of the dry paint film and the good resistance of the color pigment.

The different specific types of high temperature paint

Stardust offers a series of specific paints for use on substrates subject to high temperatures.
The vermiculated paint is available in 3 colors, in can and aerosol spray.

The high temperature paint is available in aluminum color, in can or spray. It is applied on brake calipers and also on exhaust pipes. They are available in several versions from 300 to 700° C.

The M1 clearcoat is a certified clearcoat for fire resistance, i.e. it is able to delay ignition for 30 minutes.

Variable resistances of color pigments

Among the pigments, the most resistant are aluminum pigments, and black pigments (carbon-based products).
Some pearl pigments are also very resistant to temperature, up to 800 ° C at least.
As for the color pigments, here is a table showing the different levels of resistance to temperature :

Protective paint
Retroreflective paint