Fire Protection Coating Using Intumescent paint

intumescent paint contractors cape town

Fire Protection Coating Using Intumescent paint in Cape Town

Thermal Protection Materials

Thermal protection materials are designed to slow the process of combustion heat transfer to the structural element, delaying the effect of temperature variation on its resistance. According to their nature, they can compose an insulating barrier, reducing the heat transfer rate to the protected element. There are also protective materials that develop chemical reactions due to rising temperatures. These reactions can absorb some of the energy that would be aimed at the structural component and/or form material with insulating features.

Heat transfer occurs by physical means via conduction (static means) and convection (moving means). When it does not take place by physical means, heat transfer occurs by radiation, where energy is transferred by electromagnetic waves. A fire protection material can act as a physical barrier, reducing the energy transfer rate. As an example, there are insulating materials such as masonry.

Chemical Reaction

Another possibility is the use of a material that, when exposed to high temperatures, undergoes chemical reactions that absorb a significant portion of the energy that would be aimed directly at the structure and/or lead to forming a new thermal protection interface. For example, there is plaster, which due to its ability to maintain and chemically release water, is used as a fire protection material. When heated, the existing chemical bonds in the hydrated plaster begin to break, releasing hydration water. This reaction absorbs energy from the fire that would be conducted to the structural element, thereby forming a thermal barrier. Through this layer, the protected material remains at a constant temperature around 100ÂșC.

Intumescent Paint

As for intumescent paint, protection materials discussed in this paper, they are chemical compounds which, when subjected to elevated temperatures, undergo various reactions that form a charred foam with high insulation performance.

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The advantages of this protection are:

They present many of the desirable features of traditional decorative paint as different colors, good surface finish and durability;

They do not take up space and load increase is insignificant from a structural point of view;

Although they demand experience and strict quality control, their application is simple and does not require attachment to the structure, in addition to easy maintenance properties;

They can be used in the protection of structural connecting areas;

They do not modify the intrinsic properties of the substrate (as mechanical features). Therefore, they can be applied to existing structures without loss/modification of structural capacity.

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Topic: Fire Protection Coating Using Intumescent paint