What is intumercent?

Intumercesces is any material that expands when exposed to heat. Intumescent materials are usually used in construction to ensure passive fire protection - in some cases delaying the spread of fire by one hour. When choosing an intumercent, attention should be paid to this because it is known that some have degraded over time, mainly because of moisture. Although the expansion of intumertic materials is generally 15-30 times higher than the original thickness, some manufacturers claim that expansion up to 200 times. After the fire burns with the first layer of isolative foam, it could achieve another layer of intumercent, which will again form another ashes or foam.

This cycle could be slowed down until all intumertic material is made. This process can take a few minutes or a like hour before the fire spreads further. If the fire goes out before the intumeral material is exhausted, the foam may be scraped with minimal damage to the original structure. In thisThe fall, when it is exposed to a fire, releases water. This will help cool the surrounding areas.

There are a number of ways to use intumescent materials to ensure fire protection. The intumescent seals used in electrical boxes and fire doors provide a fireproof deterioration by significant slowing down the spread of fire. While normal color is highly flammable, an intumescent coating can be added to paint to provide significant fire protection. The evaluation of structural steel of fire resistance can be increased by intumescent coatings. Intumescent materials are also used on the floor of the wall assembly as a blanket.

When exposing increased humidity, some materials will lose their intume properties - for example, in the event of a fire, they will not generate so much foam or Char. In fact, normal humidity is sufficient to degrade some intumescents. Some intumesCents can also degrade from exposure to ultraviolet radiation or heat. These sensitive intumescents may still be useful, but must always have a protective coating; If the coating is worn, the intumercent may deteriorate immediately. Several independent agencies test intumercent coatings and evaluate them on the basis of their tolerance of environmental stimuli and their performance resistant.