What is the principle of fire protection of fire retardant coatings?

                      What are the ingredients of fire retardant coatings?

Fireproof paintWhat is the principle of fire protection? What are the components of fire retardant coatings?

Fire retardant coatings are commonly used for heavy-duty anti-corrosion coatings, conductive coatings, zinc-rich coatings, fluorine-containing coatings, powder coatings and flake coatings. Non-combustible and fire-retardant coatings are not only flame-retardant or non-combustible, but also have low thermal conductivity. and other knowledge points.

Fireproof coating Fireproof principle

(1) The fire retardant paint itself is flame-retardant or non-flammable, so that the protected substrate does not directly contact the air, delaying the ignition of objects and reducing the speed of burning ;

(2) In addition to its own flame retardant or non-combustibility, fire retardant paint also has a low thermal conductivity, which can delay the transmission of flame temperature to the protected substrate;

(3) The fire retardant paint is heated to decompose non-flammable inert gas, dilute the flammable gas decomposed by the thermal decomposition of the protected object, so that it is not easy to burn or the burning speed is slowed down;

(4) Fire retardant paint Nitrogen-containing fire retardant paint is heated to decompose NO, NH3 and other groups, which combine with organic free radicals to interrupt the chain reaction and reduce the temperature.

(5) Intumescent type of fire retardant coating Water-based fireproof paint expands and foams when heated to form a carbon foam insulation layer, which is closed by Protected objects, delaying the transfer of heat to the substrate, preventing objects from burning or losing strength due to increased temperature.

Classification of fire retardant coatings:

Finish fire retardant paint, wood fire retardant paint, steel structure fire retardant paint.

Use of fire retardant coating:

Fire retardant coatings are widely used in the flame retardant treatment of wires and cables in power plants, industrial and mining, telecommunications and civil buildings; they can also be used in wood structures, metal structures and underground works. Fire protection of objects such as flexible substrates.

Water-based fire retardant coatingFire prevention principle

The function of fire retardant coating is to prevent the burning of combustibles and reduce the loss caused by burning. thermal characteristics. Fire retardant coatings are used on the surface of combustible base to reduce the flammability of the coated object and delay the spread of fire. In addition to fire retardant additives, the role of other coating components in coatings is the same as that in ordinary coatings, but there are special requirements in terms of performance and dosage. The principles of fire protection of fire retardant coatings are as follows:

1. The fire retardant coating itself is flame-retardant or non-combustible, so that the protected substrate is not in direct contact with the air, delaying the ignition of objects and reducing the speed of burning.

2. In addition to being flame-retardant or non-flammable, the fire-retardant coating also has a low thermal conductivity, which can delay the transfer of flame temperature to the protected substrate.

3. The fire retardant coating is heated to decompose the non-combustible inert gas, dilute the flammable gas decomposed by the thermal decomposition of the protected object, so that it is not easy to burn or the burning speed is slowed down.

4. Fire retardant coatings Nitrogen-containing fire retardant coatings decompose NO, NH3 and other groups when heated, and combine with organic free radicals to interrupt the chain reaction and reduce the temperature.

5. Intumescent type of fire retardant coating Fireproof coating expands and foams when heated, forming a carbon foam insulation layer to seal the protected object, delaying heat and the substrate transmission, preventing objects from catching fire or reducing their strength due to increased temperature.

Fire retardant coatings are suitable for schools, universities, nursing homes, nurseries, hospitals, correctional institutions, apartments, hotels, factories, warehouses, retail stores, restaurants, utilities Corporations, railways and other transportation companies, petroleum and chemical substancesMilitaryfor fire retardant coatings For all flammable substances to reduce the burning characteristics of the surface or prevent thermal penetration. Especially for wooden items, it is more necessary to use fire retardant coatings.

Diping Fire Retardant CoatingIngredients

Commonly used concentrated coatings are: heavy-duty anti-corrosion coatings, conductive coatings, zinc-rich coatings, fluorine-containing coatings, powder coatings, and flake coatings. Fire retardant coatings have their own characteristics in fire protection applications:

(1) Heavy-duty anti-corrosion paint:

In addition to being used in buildings, fire retardant coatings are also widely used in chemical equipment, storage tanks and pipes. Among them, chemical primers, zinc-rich primers, epoxy resin coatings, polyurethane tree coatings, chlorinated rubber coatings, glass flake coatings, etc. are commonly used.

(2) Conductive paint:

Fire retardant coatings are suitable for equipment that is both anti-corrosion and anti-static, such as gasoline tanks. The research on conductive coatings abroad is very active, and many Japanese companies produce such coatings.

(3) Zinc-rich paint:

Fire retardant coating is a kind of coating containing a large amount of zinc, the content of zinc powder is between 85-95%, the coating film thickness is only 100 microns, the cost is low, and the performance is excellent.

(4) Fluorine-containing paint:

The fire retardant coating has 3 times longer life than the general coating, and is resistant to corrosion by various chemical media. The fire retardant coating can be used as surface coating for containers, tanks, mixing equipment and auxiliary equipment.

(5) Powder coating:

Fire retardant paint is a new type of paint that does not contain solvent and is melted into powder. Compared with traditional solvent-based anti-corrosion coatings, fire-resistant coatings have the advantages of no solvent pollution, rapid curing, and excellent reorganization.

(6) Flake paint:

Corrosion and penetration resistance. Flake coatings and vinyl materials are used in flue gas desulfurization devices abroad with good results. Fireproof paint can also be used as a sealing material for equipment seams.

The above is the fire prevention principle and composition of fireproof paint introduced by Wanguan Hardware Machinery Grid Xiaobian. I hope to be helpful. When purchasing, consumers need to understand the fire protection principle of fire retardant coatings, taking into account the fire performance and environmental performance, so as to make the right choice.