At home, safety is the most important. In modern (modern decoration renderings) home decoration, the use of various flammable materials is becoming more and more common, and it is very important to do fire prevention work. A very common fire treatment method is the use of fire retardant coatings. Fireproof coatings are materials that effectively protect the substrate from burning. There are many kinds of fireproof coatings on the market. If you want to choose high-quality products, you need to prepare the necessary knowledge before purchasing.

Part1: The first step in purchasing the fireproof material

Fireproof coating is a special coating used to coat the surface of the substrate, reduce the flammability of the surface of the coated material, retard the rapid spread of fire, and improve the fire endurance of the material to be coated. The fireproof coating has a good protection effect on the substrate, and is suitable for a visible open flame such as a kitchen (kitchen decoration effect diagram) and a place where a flammable board such as a wooden cabinet or a floor is installed. In the event of a fire, fire-retardant fire-retardant coatings can save time for firefighting and evacuation.

First, the composition of fireproof coating

Fireproof coatings are composed of coating materials such as base materials (ie, film-forming substances), general coating additives, fire-retardant additives, and dispersion media. In addition to fire auxiliaries, other coating components have the same effect in coatings as in conventional coatings, but have special requirements in terms of performance and dosage.

Some solvent-based fire-retardant coatings can be burned in case of fire before construction. In fact, the flammable liquid solvent in the fire-retardant coating is burning, and the base materials of fire-retardant coatings, fire-resistant additives and the like are not combustible. Because solvent-based fire retardant coatings use organic solvents as solvents, these fire retardant coatings can easily cause fires if they leak out of the bucket. The fireproof coating applied to the substrate can only function as a fire retardant after the solvent has evaporated.

Second, the classification of fire retardant coatings

Fireproof coatings can be divided into several categories according to various classification methods, such as the parts according to their use, their film-forming substances, their solubility, and their flame-retardant principles. According to the function, function and national standard requirements of fire retardant coatings, the most suitable classifications are: structural fireproof coatings and decorative fireproof coatings.

The structural fireproof coating is used for the fireproof coating on the steel structure, the raft structure and the wood structure, that is, the protective material mainly used as the non-combustion body member. The coating of the fireproof coating is thick, the density is small, and the thermal conductivity is low. Has excellent thermal insulation properties.

Finished fire retardant coatings are generally used as protective materials for flammable substrates, such as wood, home appliance surfaces, cable surface fire barriers, and other decorative materials. They are decorative and fire resistant.

Part2: Avoid misunderstanding the appropriate fire retardant coating

Different spaces do not need materials to distinguish the performance requirements of fire retardant coatings. Therefore, when purchasing paints, you can ask experienced store salesmen to use suitable fireproof coatings in suitable places to achieve the best fireproof effect. .

Myth 1: Using wood fire retardant coatings on steel structures

Since wood-based fire-retardant coatings and steel-structured fire-retardant coatings are invisible to the naked eye, consumers must understand the detailed properties of fire-retardant coatings when purchasing them. If the steel structure uses a wood-based fireproof coating, its adhesion is greatly reduced, and it is easy to fall off, and fire safety cannot be guaranteed.

Myth 2: Unsolved solvent and waterborne fire retardant coatings

There are two types of fire retardant coatings for steel structures, solvent-based fire retardant coatings and waterborne fire retardant coatings. From the perspective of adhesion, the solvent type is larger than water. Therefore, solvent-based fireproof coatings should be used for steel structures used outdoors, and solvent-based or water-based fireproof coatings can be used for indoor steel structures.

Fireproof coatings produced by some domestic manufacturers will decompose toxic gases in case of fire. If the refractory electrical product uses this coating, it releases toxic gases in the event of a fire. For example, the use of G60 perchloroethylene fire retardant coatings has been eliminated, and toxic chlorine gas will be decomposed in case of fire, so it cannot be used.

Part3: Tips for purchasing optional paints

The appearance of fire-retardant coatings is very similar to that of ordinary paints, and it is difficult to distinguish them from the appearance, but consumers still have the means to choose high-quality suitable fire-retardant coatings.

1, check the fire resistance of fire retardant coatings

It is required to check the fire resistance of the paint at the time of purchase. When the intumescent fireproof coating is burned by strong fire, it will foam and expand a lot, the surface will gather and bulge, and there will be no burning phenomenon within a few minutes, while the fake and shoddy fireproof paint will not foam at all, and a large amount of scattered slag will appear. In the case, the wood substrate will also quickly burn and break.

2, recognize the fire performance of fire retardant coatings

According to national standards, in addition to meeting the fire resistance requirements, the fire performance of fire retardant coatings is divided into first and second grades. Under the specified experimental conditions, the first-class fireproof coating has a flame resistance time of not less than 20 minutes, and the secondary fireproof coating has a heat resistance time of not less than 10 minutes. Users should pay attention to the difference in the choice, to avoid the company shoddy, can not achieve the fire protection effect.

3, buy products Mo is small and cheap

At present, domestic enterprises produce fire-retardant coatings with fire resistance up to two grades. The cost price is above 8,000 yuan/ton. If the sales price is lower than this, the quality is worrying. Therefore, when purchasing, you can't be greedy and cheap, otherwise you will buy products that are not qualified for quality and environmental protection.

4. Check the certificate and choose the brand

At present, fireproof coatings implement the type approval system for fire protection products. The fireproof coatings sold on the market should have the national fire protection product type approval certificate and the type inspection qualification report. In addition to checking whether the product has a complete national inspection certificate, selecting a branded product with credit guarantee can make the home fire protection more secure.

Part4: Key points for construction of heavy detail fireproof coatings

The quality of fireproof coatings also has an impact on the fire performance of the materials. Therefore, it is necessary to pay attention to the quality of fireproof coatings. The coating methods for different fire retardant coatings are slightly different, but the basic construction points are the same.

1. Before the coating of fireproof coating, the substrate needs to be surface treated.

Keep the surface clean, flat, etc. In particular, the steel substrate should be treated with anti-corrosion treatment on the surface of the steel frame before applying the fire-retardant coating. It is best to apply anti-corrosive paint to avoid new rust before spraying the fire retardant coating. The surface dust should be removed before spraying.

2, meet the fire protection coating construction environment requirements

When the fireproof coating is applied, the ambient temperature is 0 to 40 ° C, the substrate temperature is 5 to 45 ° C, and the relative humidity of the air is not more than 90%. At the same time, the air circulation at the construction site is maintained, and the wind speed is not more than 5 m/s. It is not suitable for outdoor work or condensation on the surface of construction components.

3. Fireproof coating construction is mainly brushed

It is mainly applied by brushing when painting, and it can also be sprayed. The thickness of each coating is 10mm to 20mm, and the second construction is carried out after drying. The coating time interval should be based on the coating, until the thickness is required. Partial repair should be done by hand.

4. Maintenance and paint storage after painting

After the fireproof coating is completed, it is necessary to do the curing and maintenance of the fireproof coating. The sprayed coating should avoid rain showering and avoid strong direct sunlight. The coating will cure within 48~96 hours at room temperature. The storage temperature of the paint is 4 to 40 ° C. It should not be stored outdoors or exposed to the sun. The fire protection coating product is generally valid for half a year.

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