What is a non intumescent fire retardant coating, and is a non intumescent fire retardant coating th

In the composition of non-intumescent fire retardant coatings, flame retardant (fire retardant) must be contained, such as phosphorus, halogen-containing organic compounds (such as decabromodiphenyl ether), sodium borate, antimony trioxide, etc. Sodium borate is especially suitable for use as a flame retardant for vinyl acetate emulsions, and the addition amount is calculated as a 10% solution, accounting for 40% and 60% of the polymer. Antimony trioxide itself is not very flame retardant, but when it is in the early stage of combustion, antimony trichloride can be born, for example, when used in combination with chlorinated paraffins, it will exert excellent flame retardant ability.

In order to achieve excellent fire performance, in addition to the addition of flame retardants, the choice of binder is also important. Because elements such as halogens (typically chlorine and bromine) and phosphorus are so effective in improving fire resistance, it is best to use binders containing these elements. For example, vinyl chloride or vinylidene chloride copolymer emulsions or chlorinated rubber emulsions are the most advantageous binders.

In addition, trimethylphenyl phosphate and -trichloroethylene phosphate should be selected as flame retardant plasticizers.

The fire protection mechanism of intumescent fire retardant coating is that when the finishing layer of fire retardant coating is exposed to the flame, the foaming components in the coating film are decomposed by heat to form a heat-insulating sponge foam layer, thereby preventing the spread of flame. Fire protection additives in coatings are mainly foaming ingredients, including carbon sources, blowing agents and organic nitrogen compounds, etc., which can be used together.

Indoor non-intumescent steel structure fireproof coating, also known as indoor thick fireproof coating sprayed on the surface of the steel component, does not expand when fire, relying on the non-combustible and low thermal conductivity of the coating itself to form a fire-resistant and heat-insulating protective layer, slowing down the direct invasion of the fire-bearing components, thereby effectively improving the fire resistance limit of the steel structure.

Thick fire-retardant coatings do not swell.

Intumescent fire retardant coatings are thin.

Because most of the thick hidden fire retardant coatings are basically not expansion type, so it is easy to distinguish, and there is a certain difference between thin fire retardant coatings and thick fire retardant coatings in nature, the principle of thin fire retardant coatings is that once the paint itself encounters fire, it will expand, and automatically form a fire stove macro stupid layer to improve the combustion time, which also increases the time of absolute fire resistance.

Thick fire-retardant coatings can only rely on their own performance characteristics, because the thermal conductivity of thick fire-retardant coatings is relatively low, even if it does not expand, it can also have high fire resistance, so the coating thickness between the two is different.

Thick-coated steel structure fire retardant coating is a non-intumescent steel structure fire retardant coating, which improves the fire resistance time of building components through its own low thermal conductivity.

It does not expand when it encounters fire, does not burn, does not release harmful gases in the event of a fire, and only produces a small amount of dust during stirring, so it is a green building materials product, with stable fire resistance and long service time. Disadvantages: self-weight, not suitable for the use of light steel.

In the composition of non-intumescent fire retardant coatings, flame retardant (fire retardants) must be contained, such as phosphorus and halogen.

organic matter (e.g., decabromodiphenyl ether), sodium borate.

Three noisy celebrations do antimony oxide and so on. Sodium borate is particularly suitable for use as an ethyl acetate forme.

It is a flame retardant for emulsion, and the amount of liquid balance added is calculated as 10% solution, accounting for 40% and 60% of the polymer.

Antimony trioxide.

The flame retardant ability itself is not high, but when it is in the early stage of combustion, it can be born antimony trichloride, for example, when used in combination with chlorinated paraffins, it will exert excellent flame retardant ability.

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For you to find out the maximum resistance of Rebi hand. Fire-retardant coating is to brush the paint on the surface of the material, can improve the fire resistance of the material, slow down the spread of flames, or in a certain period of time can prevent combustion, regret this kind of coating is called fireproof coating, or flame retardant coating. Fire retardant coatings are used on the surface of flammable substrates, which can reduce the flammability of the surface of the coated material and delay the rapid spread of fire.

The raw materials, fire protection principles and time of intumescent and non-intumescent fire retardant coatings are different.

1.From the point of view of raw materials, intumescent fireproof coatings are mainly made of foaming agents, carbonizing agents and other ingredients, while non-intumescent fire-retardant coatings are made of absolute materials, and the material itself is a flame-retardant or non-combustible substance.

2.From the perspective of the principle of fire prevention, the intumescent fireproof coating will expand after fire, forming a uniform thermal insulation layer, thereby prolonging the fire resistance time, rather than the heat conduction technology used by the intumescent fireproof coating, the base layer does not change after the fire, and the flame retardant and heat conduction materials are used to extend the fire resistance time.

3.From the perspective of fire resistance time, the general fire resistance of intumescent refractory coatings is one to two hours, while the fire resistance time of non-intumescent fireproof coatings is about two to three hours, and there is a certain difference between the two. Lucha.

The concept is different.

Intumescent fire-retardant coating is a kind of special coating that produces foaming gas in the coating to form a foamy carbonaceous insulation layer when the coating is heated to a certain temperature, which isolates the flame from the base layer, thereby preventing the base layer from reaching the ignition point temperature and destruction temperature. There are two types of non-intumescent fire retardant coatings, namely: flame retardant coatings and non-intumescent fire retardant coatings.

Flame retardant fire retardant coatings include latex fire retardant coatings and fire retardant coatings containing flame retardant additives, latex fire retardant coatings are flame retardant substances in the latex itself, and some inorganic pigments are added to form fire retardant coatings, and most of the fire retardant coatings containing flame retardant additives are halogen to make the base material flame retardant.

Cable fireproof coating manufacturers produce and sell, people who have been exposed to fireproof coatings know that the types of fireproof coatings are not single, and there will be different results according to different ways. The main directions are: the development of multi-effect, high-efficiency, low-water-soluble dehydration char catalyst Sakuan Jing and foaming agent; A variety of flame retardants synergistically match reasonably; The combination and modification of resin improves the fire performance and physical and chemical properties of fire retardant coatings; Intumescent and non-intumescent fire retardant coatings are carefully combined; Inorganic halogen-free intumescent fire retardant coatings.

The method of coating the surface of the fireproof coating for fire protection can not only maintain the excellent performance of the original organic synthetic materials, but also be economical. by the user.

Indoor non-intumescent fireproof coatings include ammonium phosphate fireproof coatings, silicate fireproof coatings, carbonized fireproof coatings, ammonium phosphosicate fireproof coatings, alumina fireproof coatings, epoxy resin fireproof coatings, etc.

1.Ammonium phosphate fireproof coating:

Ammonium phosphate fire retardant coating is a fire retardant coating that has been tested for many years, it can release ammonium phosphate when it is burned at high temperatures, forming a barrier to prevent the spread of fire.

2.Silicate fire retardant coatings:

Silicate fireproof coating uses silicate as the main component, which can melt at high temperature to form a layer of fireproof material to protect the building, and also has the function of sound insulation and heat preservation.

3.Carbonized Fire Retardant Coating:

Carbonized fireproof coating uses a carbon film formed at high temperature to achieve the purpose of fire prevention, it has excellent protective properties such as waterproof, moisture-proof, anti-corrosion, etc., and can be constructed on a variety of building surfaces.

4.Ammonium phosphosilicate fire retardant coating:

Ammonium phosphosilicate fireproof coating is a comprehensive fireproof material, which combines the advantages of ammonium phosphate and silicate, has the characteristics of good heat resistance and excellent fireproof effect, and is an ideal fireproof coating material.

5.Alumina fire retardant coating:

Alumina fireproof coating uses alumina as the main component, which can produce a protective film of alumina under the heat source and play a role in fire prevention. Such coatings usually have good fire and heat resistance, and also have good stability against chemicals such as water, acids, and alkalis.

6.Epoxy Fire Retardant Coating:

Epoxy resin fire retardant coating is a common indoor non-intumescent fire retardant coating, which uses epoxy resin as the base material, adds certain flame retardants and stabilizers, and can quickly produce a protective film under the heat source, so as to avoid the occurrence and spread of fire.

1.The ingredients are different:

Intumescent fireproof coating, its base material is organic resin, the formula also contains foaming agent, flame retardant, carbon agent and other components, non-intumescent fireproof coating, also known as thick fireproof coating, the main component is inorganic thermal insulation material.

2.Reactions are different:

Intumescent fire-retardant coating: After encountering the fire, it will foam and expand, forming a hollow carbonaceous layer that is 10-100 times thicker than the original coating.

Non-intumescent fire retardant coating: does not expand in case of fire. Its fire protection mechanism is to use the inherent good thermal insulation of the coating and the heat absorption caused by the evaporation and decomposition of some components at high temperaturesThe role is different:

Intumescent fire retardant coatings: A hollow carbonaceous layer blocks heat transfer to the substrate from external heat sources.

Non-intumescent fire retardant coating: to block and consume fire heat transfer to the substrate, and delay the heating of steel components.