Building materials are called reactive if they react on physical or chemical temperature influences.
in the area of passive fire protection,there is a distinction between intumescing and energy absorbing building materials,where as intumescing building materials may have an energy absorbing effect,too.Each building material is available with different designs and material properties.Respecting their particuler technical feature in the construction of buildlng components,one may achieve ver-ı flexible solutlons in averting the onset of fire and the spread of fire.
Another important aspect of the intumescent material is its pressure while expanding. The pressure defines the power with which an opening needs to be sealed. Therefore, one has to choose carefully the right intumescent material for each application as too much pressure may destroy the constructional element and finally would be counterproductive, or in contrast, low pressure may not perform successfully in the event of a fire. in contrast to that, energy absorbing materials consume energy due to their endothermal reaction under temperature influence. Most of them set the contained water free. The high warmth capacity of water ıeads to the desired effect of cooling adjacent materials.
The foam of some of the intumescent materials offers extra insulating effects.
By absorbing energy, less heat gets transmitted from the fire side to the unexposed face. This condition is more effective than merely a ucooling effect".
lntumescent profiles, custom moulded parts