News Details
Phosphorous flame retardant
2017-10-15 14:40:08
Phosphorus flame retardants is a large family of flame retardant, it is widely used in various flame retardant material, including plastic, rubber, paper, wood, paint and textile, etc., have very important position in the field of flame retardant and its consumption is second only to halogen flame retardants.
Phosphorus-containing flame retardants in recent years, due to the adverse effects on human health and the environment is more and more countries, phosphorus flame retardants is more attention because of its efficient low toxicity, appeared a series of products, and have a lot of reports about the document of phosphorous flame retardants. Phosphorus flame retardant is widely used in the fabric flame retardant, currently use more cotton flame retardant main varieties are phosphorus flame retardants, in addition, it is also widely used in synthetic fiber flame retardant.
A lot of phosphorus flame retardant can play a role of flame retardant in the gas phase and the condensed phase and at the same time, including inhibition of flame, heat melt flow, containing phosphoric acid to form the surface of the barrier, acid catalytic into carbon, carbon layer insulation and oxygen and so on, the effect factors on the category and the relative contribution of flame retardant flame retardant polymer and fire conditions, but in many cases, involves many kinds of phosphorus flame retardant role model.
In the condensed phase, the phosphorus phosphate generated during combustion, at higher temperatures generated metaphosphoric acid, phosphoric acid and phosphoric acid are dehydrating agent, dehydrating polymer directly carbonized, avoid the formation of combustible gas; at the same time in the formation of coke burning fabric surface layer, on the one hand it can cut off the combustion gas and flame front contact, on the other hand, to separate air and heat from the combustion of fabric surface, from the burning to stop the fabric. The flame retardant effect of phosphor flame retardant is very good for oxygen-containing cellulose fabric.
Volatile phosphorus flame retardants is a very effective flame inhibitor, they in cracking generation of flame in the small PO, PO2 and HPO2, lowered the hydrogen concentration of free radicals in a flame of fire, such burning branched chain reaction (see equation 1 ~ 4) can't carry on, so as to stop the burning.
Inorganic phosphorus flame retardant has long been used in the flame retardant of cellulose fabrics, and its varieties mainly include red phosphorus, ammonium phosphate, sodium phosphate [3], iron phosphate [4], etc. As early as 1786, ammonium phosphate was used as a flame retardant.
Isopropylphenyl Phosphate(IPPP65) Uses:
Isopropylphenyl Phosphate, Flame Retardant IPPP65 Halogen-Free Phosphate Flame Retardant Plasticizer, Will Not Twice Pollute The Environment; In The Phosphate Ester Species Is A Viscosity, Phosphorus Content Is More Moderate A Model. This Product Is Colorless And Transparent, Good Compatibility, The Use Of Both Flame Retardant And Plasticizer, In The Flame Retardant And Plasticizer To Play A Balance Between The Role, But Also To Make The Processing Of The Same Material And Its Physical Properties.
The mixture of ammonium dihydrogen phosphate and boric acid is used for the flame retardant of fabric fiber and the effect is good. The mixture of ammonium dihydrochloride, boric acid and sodium tungstate is also very effective for the flame retardant of the fabric. These inorganic flame retardants are cheap and easy to dissolve in water, so the finishing method is simple, but there are also the disadvantages such as large amount of addition, poor hand feeling and poor washing resistance.
Is an important variety of inorganic phosphorus flame retardant poly ammonium phosphate, ammonium phosphate can be divided into low molecular weight and high molecular weight two kinds, the former has been widely applied in the flame retardant of cellulose fibre. The low molecular weight polyphosphate ammonium salt is soluble salt and it is often used in combination with urea to enhance the flame retardant effect.
Red phosphorus is a kind of inorganic polymer, molecular formula (P4) n, because it contains phosphorus only, its flame retardant efficiency is very high, and the oxygen index (LOI) of 7.5% of phosphorus containing phosphorus is up to 35%. The disadvantage of red phosphorus is that it is easy to absorb moisture and poor in compatibility with the resin. It is to produce PH3 gas and stain the flame retardant products, which makes the direct application of red phosphorus to polymer flame retardant.
As a result, some people adopt the method of the cladding protection membrane on the surface of red phosphorus, preparation of the microcapsules of red phosphorus flame retardants, it not only high flame retardant efficiency, less affected the performance of other polymers, and good compatibility with resin, no longer has the defects of moisture absorption and produce PH3 gas, at the same time, low smoke, low toxicity, thermal stability is very good also. At present, the microencapsulated red phosphorus has been used in flame retardant cotton fabric.
Compared with inorganic phosphorus flame retardants, organophosphorus flame retardants have less influence on the physical mechanical properties of polymers, and are compatible with polymers, thus becoming a popular flame retardant in recent years. Abroad a series of organic phosphorus flame retardants products have been put into use, and have the new products constantly, our country at present the development and research of organic phosphorus flame retardants for more, but really can form a product into production it is rare, therefore, organic phosphorus flame retardants in our country has the very good development prospect.
Organophosphorus flame retardants include phosphorus (phosphine), phosphors, organophosphorus salts, phosphine, phosphorylated polyols, etc., but the most application is phosphine (phosphine) acid ester and its oomers. Such as Fyrol76 consists of vinyl phosphonic acid (2 - ethyl chloride) ester and methyl phosphonic acid ester condensation generated a oligomer, it can be used alone, also can with N - hydroxy methyl acryl amine and, with potassium persulfate as catalyst caused by free radical polymerization, the N - hydroxy methyl grafted on the fiber, fiber fabric, such as cotton or its blended fabric flame retardant.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Phosphorus-containing flame retardants in recent years, due to the adverse effects on human health and the environment is more and more countries, phosphorus flame retardants is more attention because of its efficient low toxicity, appeared a series of products, and have a lot of reports about the document of phosphorous flame retardants. Phosphorus flame retardant is widely used in the fabric flame retardant, currently use more cotton flame retardant main varieties are phosphorus flame retardants, in addition, it is also widely used in synthetic fiber flame retardant.
A lot of phosphorus flame retardant can play a role of flame retardant in the gas phase and the condensed phase and at the same time, including inhibition of flame, heat melt flow, containing phosphoric acid to form the surface of the barrier, acid catalytic into carbon, carbon layer insulation and oxygen and so on, the effect factors on the category and the relative contribution of flame retardant flame retardant polymer and fire conditions, but in many cases, involves many kinds of phosphorus flame retardant role model.
In the condensed phase, the phosphorus phosphate generated during combustion, at higher temperatures generated metaphosphoric acid, phosphoric acid and phosphoric acid are dehydrating agent, dehydrating polymer directly carbonized, avoid the formation of combustible gas; at the same time in the formation of coke burning fabric surface layer, on the one hand it can cut off the combustion gas and flame front contact, on the other hand, to separate air and heat from the combustion of fabric surface, from the burning to stop the fabric. The flame retardant effect of phosphor flame retardant is very good for oxygen-containing cellulose fabric.
Volatile phosphorus flame retardants is a very effective flame inhibitor, they in cracking generation of flame in the small PO, PO2 and HPO2, lowered the hydrogen concentration of free radicals in a flame of fire, such burning branched chain reaction (see equation 1 ~ 4) can't carry on, so as to stop the burning.
Inorganic phosphorus flame retardant has long been used in the flame retardant of cellulose fabrics, and its varieties mainly include red phosphorus, ammonium phosphate, sodium phosphate [3], iron phosphate [4], etc. As early as 1786, ammonium phosphate was used as a flame retardant.
Isopropylphenyl Phosphate(IPPP65) Uses:
Isopropylphenyl Phosphate, Flame Retardant IPPP65 Halogen-Free Phosphate Flame Retardant Plasticizer, Will Not Twice Pollute The Environment; In The Phosphate Ester Species Is A Viscosity, Phosphorus Content Is More Moderate A Model. This Product Is Colorless And Transparent, Good Compatibility, The Use Of Both Flame Retardant And Plasticizer, In The Flame Retardant And Plasticizer To Play A Balance Between The Role, But Also To Make The Processing Of The Same Material And Its Physical Properties.
The mixture of ammonium dihydrogen phosphate and boric acid is used for the flame retardant of fabric fiber and the effect is good. The mixture of ammonium dihydrochloride, boric acid and sodium tungstate is also very effective for the flame retardant of the fabric. These inorganic flame retardants are cheap and easy to dissolve in water, so the finishing method is simple, but there are also the disadvantages such as large amount of addition, poor hand feeling and poor washing resistance.
Is an important variety of inorganic phosphorus flame retardant poly ammonium phosphate, ammonium phosphate can be divided into low molecular weight and high molecular weight two kinds, the former has been widely applied in the flame retardant of cellulose fibre. The low molecular weight polyphosphate ammonium salt is soluble salt and it is often used in combination with urea to enhance the flame retardant effect.
Red phosphorus is a kind of inorganic polymer, molecular formula (P4) n, because it contains phosphorus only, its flame retardant efficiency is very high, and the oxygen index (LOI) of 7.5% of phosphorus containing phosphorus is up to 35%. The disadvantage of red phosphorus is that it is easy to absorb moisture and poor in compatibility with the resin. It is to produce PH3 gas and stain the flame retardant products, which makes the direct application of red phosphorus to polymer flame retardant.
As a result, some people adopt the method of the cladding protection membrane on the surface of red phosphorus, preparation of the microcapsules of red phosphorus flame retardants, it not only high flame retardant efficiency, less affected the performance of other polymers, and good compatibility with resin, no longer has the defects of moisture absorption and produce PH3 gas, at the same time, low smoke, low toxicity, thermal stability is very good also. At present, the microencapsulated red phosphorus has been used in flame retardant cotton fabric.
Compared with inorganic phosphorus flame retardants, organophosphorus flame retardants have less influence on the physical mechanical properties of polymers, and are compatible with polymers, thus becoming a popular flame retardant in recent years. Abroad a series of organic phosphorus flame retardants products have been put into use, and have the new products constantly, our country at present the development and research of organic phosphorus flame retardants for more, but really can form a product into production it is rare, therefore, organic phosphorus flame retardants in our country has the very good development prospect.
Organophosphorus flame retardants include phosphorus (phosphine), phosphors, organophosphorus salts, phosphine, phosphorylated polyols, etc., but the most application is phosphine (phosphine) acid ester and its oomers. Such as Fyrol76 consists of vinyl phosphonic acid (2 - ethyl chloride) ester and methyl phosphonic acid ester condensation generated a oligomer, it can be used alone, also can with N - hydroxy methyl acryl amine and, with potassium persulfate as catalyst caused by free radical polymerization, the N - hydroxy methyl grafted on the fiber, fiber fabric, such as cotton or its blended fabric flame retardant.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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