Status of fire retardant paint industry

The frequent occurrence of fire accidents across the country in recent years,causing heavy casualties and property losses,are shocking. Therefore,the development of a flame retardant,non-combustible and fire building materials is imminent.After the fire,to prevent fire spread rapidly, so people have enough time to rescue left the scene of the fire and organizations,significant narrow disasters to avoid the heavy losses of personnel and property.The fire retardant paint exactly play such a role of protective material.

Fire retardant coating based on its use of the object is mainly divided into the finishing and fireproof coatings two categories.Which it was in a fire after the change in status of the coating can be divided into two categories of intumescent and non-intumescent.Currently our finishing fire retardant paints intumescent fireproof coatings,intumescent and non-intumescent have production.

Finishing fire retardant paints paint a set decoration and fire as one of the new varieties.When it is coated on the the combustible substrate surface on peacetime can play a decorative role,Once a fire occurs,it is possible to prevent the spread of fire to protect the substrate,so that people have enough time to leave the scene of the fire and organize rescue purposes.

Non-intumescent fire retardant coating

Non-intumescent fire retardant coating primarily through three ways to play to prevent fire.One is that the flame retardancy of the coating itself or incombustible;secondly in the release of decomposition under the action of a flame or high temperatures,a combustible gas (such as water vapor,ammonia,hydrogen chloride,carbon dioxide,etc.), dilute oxygen and combustible gas;Third,formed in the flame or high temperature conditions,non-combustible inorganic enamel coating.The glaze layer dense structure,can effectively cut off oxygen,and within a certain time,a certain insulation effect

Intumescent

Intumescent fire retardant coating after the film,the film is no different from ordinary temperature.But the effect of flame or heat coating severe foaming carbonized form than the original coating thickness several times or even hundreds of times the flame retardant foam carbonized layer.It can be isolated from the external source of ignition direct heating of the substrate,which play the role of fire retardant.

Fireproof Coating foam,coating thickening few times,thermal conductivity decreases sharply.Therefore,the heat passed through the foam carbonized layer to the substrate only unexpanded several tenth of the coating,or even hundreds of one percent,which can effectively prevent external heat source. Other hand,in the flame or high temperatures,coating occurs physical change of the softening,melting, evaporation,expansion and the like and polymers,fillers and other component occurs decomposition,degradation,compounds and other chemical changes can also absorb large amounts of heat,offsetting part of the external forces on the heat of the object,and thus from the process of protecting a substrate heat up delay.

Further,the coating in the high temperature decomposition of the nonflammable gas to dilute the concentration of organics generated by thermal decomposition of the combustible gas and oxygen,to suppress combustion proceeds.Intumescent is a more effective retardant paint.It is the case of a small fire non-combustible,away from the fire self-extinguishing.To prevent the spread of flame in a larger fire,slowing the propagation velocity of the flame.

By Sabrina