News Details
Flame retardant additive
2017-10-7 10:40:17
Flame retardant additive
At present, there are many kinds of flame retardant additives. According to different classification standards, flame retardant additives can be classified into the following categories:
(1) in accordance with the quantities of the flame retardant additives can be divided into halogen flame retardant elements, phosphorus and phosphorus - nitrogen, silicon, antimony, boron and aluminum magnesium series and so on several kind of flame retardant additives, including phosphorus-containing flame retardant additives is one of the largest flame retardant additives in the production in the world, has the characteristics of the adding quantity is little, flame retardant effect is remarkable, which occupies an important position in the field of flame retardant.
(2) according to the different components of flame retardant additives, flame retardant additives can be divided into three types: inorganic flame retardant additive, organic flame retardant additive and organic and inorganic mixed flame retardant additive; Of inorganic flame retardant is a kind of halogen-free flame retardant additives, additives with high safety and smoke suppression, non-toxic, low price, mainly including water and inorganic metal compounds, antimony series flame retardant, silicon flame retardant additives, inorganic additives phosphorus-containing flame retardant additives and expandable graphite, etc.; Organic flame retardant is mainly composed of halogen flame retardant additive and phosphor flame retardant additive. The flame retardant additive has different properties due to different flame retardant elements.
(3) according to the use of the flame retardant additives and form of existence in polymer, then add type and reaction type can be divided into two categories, including adding type is given priority to with inorganic flame retardant additives, reaction type is mainly organic flame retardant additives.
The basic principle of flame retardant of flame retardant. Combustion reaction generally has combustible, oxygen and certain temperature three elements, and is indispensable. The mechanism of flame retardant additives should inhibit the production of one or more elements in the combustion of the material to prevent or slow the combustion.
Each kind of flame retardant additive flame retardant mechanism of the concrete is different, but the basic principle of flame retardant is roughly the same, reduce the production of combustible gas in the pyrolysis process and obstacles in the process of gas combustion basic reaction, absorbing heat burning domain, the dilution and isolation of air, to prevent burning also to have certain effect. The flame retardant of flame retardants includes the following main processes.
Some flame retardant additives in the process of heating, it contains the flame retardant elements compound heat absorption dehydration happens, phase transformation, decomposition and other endothermic reaction, lower the temperature of the polymer surface and the burning area, so as to slow down the decomposition of the polymer to flame retardant effect.
Triisobutyl Phosphate(TIBP) is mainly used for antifoamer and penetrant. It is also be widely used in printing and dying, ink, construction, and oil field additives, etc. Another chemical name of Triisobutyl Phosphate (TIBP) is tri -butyl phosphate.
In the process of combustion, a large amount of combustible gases, such as carbon monoxide, are produced. The existence of flame retardant additives can produce a large amount of non-flammable gas, effectively diluting combustible gas or air, thereby achieving the flame retardant effect on the material.
Some flame retardant materials (such as phosphoric acid, boric acid) melting, heating of the material surface to form a layer of vitreous membrane, prevent the supply of oxygen, at the same time can heat insulation effect and decrease the combustible gas release quantity, to produce flame retardant effect.
In the process of polymer combustion, a large number of free radicals are generated to accelerate the combustion reaction of the gas phase. If you can manage to capture and destroy these free radicals, you can control the burning and the flame retardant effect. The velocity of the gas phase combustion is closely related to the free radical HO and H? concentration generated during combustion.
The main effect of gas flame retardant additive is to convert such high-energy free radicals into stable free radicals and inhibit the combustion process. Free radicals and dust particles surface contact, may lose activity, on the surface dust particles can occur the following response: H + O2 ? HO2, the dust particles generated on the surface of a large number of activities than h., HO, such as much lower free radicals HO2, so as to achieve the aim of inhibition of combustion.
In general, flame retardant additives main insulating layer are formed by heat absorption cooling, dilution, and termination of free radical chain reaction, to realize the material flame retardant, the top three for the physical effect, the latter for chemistry. Physical effects include heat absorption, dilution of combustible matter and the effect of isolating air; The chemical effects are carbonization, free radical action and phosphopphthalation.
The inorganic hydrate metal compounds mainly include magnesium hydroxide [Mg(OH) 2], aluminum hydroxide [Al(OH) 3], water talc [Mg6Al2(OH)16CO3? 4H2O], calcium aluminate [3CaO?Al2O3? 6H2O], etc. Such materials have the advantages of good thermal stability, flame retardant, non-toxic, non-volatile, no corrosive gas, small smoke volume, no secondary pollution.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
At present, there are many kinds of flame retardant additives. According to different classification standards, flame retardant additives can be classified into the following categories:
(1) in accordance with the quantities of the flame retardant additives can be divided into halogen flame retardant elements, phosphorus and phosphorus - nitrogen, silicon, antimony, boron and aluminum magnesium series and so on several kind of flame retardant additives, including phosphorus-containing flame retardant additives is one of the largest flame retardant additives in the production in the world, has the characteristics of the adding quantity is little, flame retardant effect is remarkable, which occupies an important position in the field of flame retardant.
(2) according to the different components of flame retardant additives, flame retardant additives can be divided into three types: inorganic flame retardant additive, organic flame retardant additive and organic and inorganic mixed flame retardant additive; Of inorganic flame retardant is a kind of halogen-free flame retardant additives, additives with high safety and smoke suppression, non-toxic, low price, mainly including water and inorganic metal compounds, antimony series flame retardant, silicon flame retardant additives, inorganic additives phosphorus-containing flame retardant additives and expandable graphite, etc.; Organic flame retardant is mainly composed of halogen flame retardant additive and phosphor flame retardant additive. The flame retardant additive has different properties due to different flame retardant elements.
(3) according to the use of the flame retardant additives and form of existence in polymer, then add type and reaction type can be divided into two categories, including adding type is given priority to with inorganic flame retardant additives, reaction type is mainly organic flame retardant additives.
The basic principle of flame retardant of flame retardant. Combustion reaction generally has combustible, oxygen and certain temperature three elements, and is indispensable. The mechanism of flame retardant additives should inhibit the production of one or more elements in the combustion of the material to prevent or slow the combustion.
Each kind of flame retardant additive flame retardant mechanism of the concrete is different, but the basic principle of flame retardant is roughly the same, reduce the production of combustible gas in the pyrolysis process and obstacles in the process of gas combustion basic reaction, absorbing heat burning domain, the dilution and isolation of air, to prevent burning also to have certain effect. The flame retardant of flame retardants includes the following main processes.
Some flame retardant additives in the process of heating, it contains the flame retardant elements compound heat absorption dehydration happens, phase transformation, decomposition and other endothermic reaction, lower the temperature of the polymer surface and the burning area, so as to slow down the decomposition of the polymer to flame retardant effect.
Triisobutyl Phosphate(TIBP) is mainly used for antifoamer and penetrant. It is also be widely used in printing and dying, ink, construction, and oil field additives, etc. Another chemical name of Triisobutyl Phosphate (TIBP) is tri -butyl phosphate.
In the process of combustion, a large amount of combustible gases, such as carbon monoxide, are produced. The existence of flame retardant additives can produce a large amount of non-flammable gas, effectively diluting combustible gas or air, thereby achieving the flame retardant effect on the material.
Some flame retardant materials (such as phosphoric acid, boric acid) melting, heating of the material surface to form a layer of vitreous membrane, prevent the supply of oxygen, at the same time can heat insulation effect and decrease the combustible gas release quantity, to produce flame retardant effect.
In the process of polymer combustion, a large number of free radicals are generated to accelerate the combustion reaction of the gas phase. If you can manage to capture and destroy these free radicals, you can control the burning and the flame retardant effect. The velocity of the gas phase combustion is closely related to the free radical HO and H? concentration generated during combustion.
The main effect of gas flame retardant additive is to convert such high-energy free radicals into stable free radicals and inhibit the combustion process. Free radicals and dust particles surface contact, may lose activity, on the surface dust particles can occur the following response: H + O2 ? HO2, the dust particles generated on the surface of a large number of activities than h., HO, such as much lower free radicals HO2, so as to achieve the aim of inhibition of combustion.
In general, flame retardant additives main insulating layer are formed by heat absorption cooling, dilution, and termination of free radical chain reaction, to realize the material flame retardant, the top three for the physical effect, the latter for chemistry. Physical effects include heat absorption, dilution of combustible matter and the effect of isolating air; The chemical effects are carbonization, free radical action and phosphopphthalation.
The inorganic hydrate metal compounds mainly include magnesium hydroxide [Mg(OH) 2], aluminum hydroxide [Al(OH) 3], water talc [Mg6Al2(OH)16CO3? 4H2O], calcium aluminate [3CaO?Al2O3? 6H2O], etc. Such materials have the advantages of good thermal stability, flame retardant, non-toxic, non-volatile, no corrosive gas, small smoke volume, no secondary pollution.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Spanish
French
Italian
Portuguese
Japanese
Korean
Arabic
Russian