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A combination of flame retardant and flame retardant
2017-9-7 16:22:11
A combination of flame retardant and flame retardant
The combined use of halogen flame retardant and phosphorous flame retardant can produce a significant flame retardant effect. For halogen - phosphorus flame retardant synergistic effect, people put forward halide - phosphorus cooperate to use can promote each other, and form stronger than used alone with flame retardant effect of halogen - phosphorus compounds and their transformations PBr3, PBr, POBr3, etc. With pyrolysis gas chromatography, differential thermal analysis, differential scanning calorimetry analysis, determination of oxygen index, flame retardant, temperature programmed observation and other methods to the study of halide one LinXie with effect, halogen, phosphorus, when using decomposition temperature of the flame retardant was slightly lower than when used alone, very intense and decomposition, combustion zone, chlorine and phosphorus compounds hydrolyzate formation of the flue gas clouds can stay longer in the combustion zone, formed a powerful air interval of abscission layer.
About phosphorus - nitrogen flame retardant mixture of interaction mechanism of the effect of synergistic flame retardant enough perfect, it is generally believed with nitride (such as urine, melamine, guanidine, dicyandiamide, methylol melamine, etc.) can promote the phosphate phosphorus acylation reaction with cellulose. The formation of phosphoric acid is much easier to produce the ester reaction, and the thermal stability of the ester is better than that of phosphate.
The synergistic flame retardant effect of phospho-nitrogen flame retardant can promote the formation of coke and water at lower temperature and increase the production of coke residue, thus improving the effect of flame retardant. The phosphating and nitrides form an expanded coking layer at high temperature, which ACTS as a protective layer for the insulation resistance, and nitrogen compounds play the role of foaming agent and coke enhancer. Basic element analysis, the residue containing nitrogen, phosphorus and oxygen three elements, they are formed under the flame temperature thermal stability of amorphous material, like vitreous body, as a thermal insulation layer of fiber.
Tris (2-Chloroethyl) Phosphate
There Are Three Industrial Methods: Phosphorus Oxychloride And Chloroethanol Reaction; Phosphorus Trichloride And Chloroethanol Reaction Reoxidation; Phosphorus Oxychloride And Ethylene Oxide Reaction (Industrial Commonly Used Method).
1, Phosphorus Oxychloride And Ethylene Oxide To Sodium Metavanadate As A Catalyst, At 50 ° C Reaction, The Reaction By Neutralization, Washing, Vacuum Dehydration Off The Low Boiling, That Is, The Finished Product. Chlorohydrin Can Also Be Used As Raw Materials, And Phosphorus Oxychloride Or Phosphorus Trichloride Reaction To Produce Tris (2-Chloro Ethyl) Phosphate.
2, 326 Kg Of Phosphorus Oxychloride And 1.0 Kg Of Sodium Metavanadate Into The Reactor. The Nitrogen In The Autoclave Was Driven By Nitrogen, And 650 Kg Of Ethylene Oxide Was Introduced Under Vacuum And Stirred At 45 To 50 ° C For 2 To 3 Hours. Evaporation Of Excess Ethylene Oxide After Alkali Neutralization To Neutral, Washed, Vacuum Dehydrated. Finished Product.
3. Put Phosphorus Oxychloride And Sodium Metaphosphate Into The Reactor. Nitrogen To Drive The Air, In The Vacuum Under The Access To Ethylene Oxide, At 45 ~ 50 ℃ Stirring 2 ~ 3h. Evaporation Of Excess Ethylene Oxide After Alkali Neutralization To Neutral, Washed, Vacuum Dehydrated Finished.
Tris (2-Chloroethyl) Phosphate use
1. Tris (2-Chloroethyl) Phosphate Has Excellent Flame Retardancy, Excellent Resistance To Low Temperature And UV Resistance, The Steam Can Only Be Used At 225 ℃ Above The Direct Ignition Can Be Fired, But The Fire The Source Is Immediately Self-Extinguishing. This Product Is A Flame Retardant Not Only Can Improve The Material Level Of Flame Retardant Materials, But Also Improve The Flame Resistance Of Water Resistance, Acid Resistance, Cold Resistance And Antistatic Properties. Commonly Used In Flame Retardant Nitrocellulose And Acetate Fiber As The Substrate Of Paint Coatings, Unsaturated Polyester, Polyurethane, Acrylic, Phenolic Resin, Can Also Be Used For Soft PVC Plastic Flame Retardant. This Product Is Used For The Amount Of Unsaturated Polyester 10% To 20%, In The Polyurethane Rigid Foam (Flame Retardant Polyether As Raw Material) Can Be About 10% In The Soft PVC Used As Auxiliary Plastic Flame Retardant When The 5% To 10%. Flame Retardants, Uranium, Thorium, Plutonium, Technetium And Other Rare Metal Separation Solvent Or Extractant.
2. This Product Is Widely Used In Chemical Fiber Fabrics, Cellulose Acetate As A Flame Retardant, In Addition To Self-Extinguishing, But Also Improve Water Resistance, Cold Resistance And Antistatic Properties. The General Amount Of 5 To 10 Copies. This Product Is An Excellent Flame Retardant For Synthetic Materials, And Has A Good Role In The Promotion, Widely Used In Cellulose Acetate, Nitrocellulose Varnish, Ethyl Cellulose, Polyvinyl Chloride, Polyvinyl Acetate, Polyurethane, Phenolic Resin , In Addition To Self-Extinguishing Products, But Also Improve The Physical Properties Of Products, Products Feel Soft, Also Known As Oil Additives And Rare Elements Of The Extractant, And Flame Retardant Rubber Conveyor Belt Is The Main Flame Retardant Materials , The General Amount Of Added 5% To 10%.
3. Used As Additive Type Halogenated Phosphate Flame Retardant And Plasticizer. Molecules In Both Phosphorus And Chlorine, Flame Retardant Effect Is Remarkable, Not Volatile And Hydrolysis, Good Stability To Ultraviolet Light. Applicable To Phenolic Resin, Polyvinyl Chloride, Polyvinyl Acetate, Polyurethane And So On. Also Used As Nitrocellulose Coating Flame Retardant, PVC Flame Retardant Plasticizer, Metal Extractant, Gasoline Additives And Polyimide Processing Aids And So On. Can Improve Water Resistance, Weatherability, Cold Resistance, Antistatic Property. Reference Dosage 5% To 20%.
Antimony trioxide cannot be used as a flame retardant (except for halogenated polymers), but it has a great synergistic effect with halogen flame retardants. Because of the presence of antimony trioxide in halide, burns the generated SbCl3, SbBr3 antimony halide, such as the relative density is very large, covering the polymer surface covering effect, and also have to capture the role of free radicals in the gaseous state. For example, antimony trioxide and chlorine flame retardants and, due to chloride heat decomposition hydrogen chloride, hydrochloric acid and antimony trioxide reaction to generate chlorine antimony oxide, antimony trichloride and antimony oxychloride thermal decomposition continue to generate antimony trichloride.
The combination of hydrated zinc borate and halogen flame retardants has a good synergistic effect. Under combustion conditions, they and their pyrolysis products interact with each other so that all flame retardant elements can be used as flame retardants. Hydration reaction with phosphorus-containing flame retardant zinc borate generated three dihalide zinc and boron halide, they can capture, HO, h. in gas phase, formed in the solid phase vitreous isolation layer, heat insulation, oxygen, water dilute oxygen burning zone and take away the heat generated, so can play a larger flame retardant effect.
The thermal stability of ammonium salts is poor, and ammonia is released when heated, such as (NH4) 2SO4, and its decomposition process is as follows: [NH4] 2SO4, NH4HSO4, H2SO4, 10 NH3 up
The release of ammonia gas is a gas that dilutes the oxygen in the air. The formation of H2SO4 ACTS as the catalyst for dehydrating carbonization. Other experiments indicate that NH3 also has the following reactions in the fire: NH3 + O2 - N2 + H2O. Besides, the N2O4 of the deep oxidation product is accompanied by the N2O4, which shows that the NH3 has not only physical flame retardation, but also chemical flame retardation.
Nanocomposite materials are separately mentioned, although they are all compound flame retardant, but their principle is a little different. Nanocomposites refer to the study of one or more components in a material that are dispersed in a different component base in a nanoscale or molecular level. This study is only a decade old. Experiments show that exist in the size of the ultrafine nanomaterials, so the performance of the various types of nanocomposites than its corresponding macro or micro level have significant improvement, composite material of the thermal stability and flame retardant properties will be significantly improved.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
The combined use of halogen flame retardant and phosphorous flame retardant can produce a significant flame retardant effect. For halogen - phosphorus flame retardant synergistic effect, people put forward halide - phosphorus cooperate to use can promote each other, and form stronger than used alone with flame retardant effect of halogen - phosphorus compounds and their transformations PBr3, PBr, POBr3, etc. With pyrolysis gas chromatography, differential thermal analysis, differential scanning calorimetry analysis, determination of oxygen index, flame retardant, temperature programmed observation and other methods to the study of halide one LinXie with effect, halogen, phosphorus, when using decomposition temperature of the flame retardant was slightly lower than when used alone, very intense and decomposition, combustion zone, chlorine and phosphorus compounds hydrolyzate formation of the flue gas clouds can stay longer in the combustion zone, formed a powerful air interval of abscission layer.
About phosphorus - nitrogen flame retardant mixture of interaction mechanism of the effect of synergistic flame retardant enough perfect, it is generally believed with nitride (such as urine, melamine, guanidine, dicyandiamide, methylol melamine, etc.) can promote the phosphate phosphorus acylation reaction with cellulose. The formation of phosphoric acid is much easier to produce the ester reaction, and the thermal stability of the ester is better than that of phosphate.
The synergistic flame retardant effect of phospho-nitrogen flame retardant can promote the formation of coke and water at lower temperature and increase the production of coke residue, thus improving the effect of flame retardant. The phosphating and nitrides form an expanded coking layer at high temperature, which ACTS as a protective layer for the insulation resistance, and nitrogen compounds play the role of foaming agent and coke enhancer. Basic element analysis, the residue containing nitrogen, phosphorus and oxygen three elements, they are formed under the flame temperature thermal stability of amorphous material, like vitreous body, as a thermal insulation layer of fiber.
Tris (2-Chloroethyl) Phosphate
There Are Three Industrial Methods: Phosphorus Oxychloride And Chloroethanol Reaction; Phosphorus Trichloride And Chloroethanol Reaction Reoxidation; Phosphorus Oxychloride And Ethylene Oxide Reaction (Industrial Commonly Used Method).
1, Phosphorus Oxychloride And Ethylene Oxide To Sodium Metavanadate As A Catalyst, At 50 ° C Reaction, The Reaction By Neutralization, Washing, Vacuum Dehydration Off The Low Boiling, That Is, The Finished Product. Chlorohydrin Can Also Be Used As Raw Materials, And Phosphorus Oxychloride Or Phosphorus Trichloride Reaction To Produce Tris (2-Chloro Ethyl) Phosphate.
2, 326 Kg Of Phosphorus Oxychloride And 1.0 Kg Of Sodium Metavanadate Into The Reactor. The Nitrogen In The Autoclave Was Driven By Nitrogen, And 650 Kg Of Ethylene Oxide Was Introduced Under Vacuum And Stirred At 45 To 50 ° C For 2 To 3 Hours. Evaporation Of Excess Ethylene Oxide After Alkali Neutralization To Neutral, Washed, Vacuum Dehydrated. Finished Product.
3. Put Phosphorus Oxychloride And Sodium Metaphosphate Into The Reactor. Nitrogen To Drive The Air, In The Vacuum Under The Access To Ethylene Oxide, At 45 ~ 50 ℃ Stirring 2 ~ 3h. Evaporation Of Excess Ethylene Oxide After Alkali Neutralization To Neutral, Washed, Vacuum Dehydrated Finished.
Tris (2-Chloroethyl) Phosphate use
1. Tris (2-Chloroethyl) Phosphate Has Excellent Flame Retardancy, Excellent Resistance To Low Temperature And UV Resistance, The Steam Can Only Be Used At 225 ℃ Above The Direct Ignition Can Be Fired, But The Fire The Source Is Immediately Self-Extinguishing. This Product Is A Flame Retardant Not Only Can Improve The Material Level Of Flame Retardant Materials, But Also Improve The Flame Resistance Of Water Resistance, Acid Resistance, Cold Resistance And Antistatic Properties. Commonly Used In Flame Retardant Nitrocellulose And Acetate Fiber As The Substrate Of Paint Coatings, Unsaturated Polyester, Polyurethane, Acrylic, Phenolic Resin, Can Also Be Used For Soft PVC Plastic Flame Retardant. This Product Is Used For The Amount Of Unsaturated Polyester 10% To 20%, In The Polyurethane Rigid Foam (Flame Retardant Polyether As Raw Material) Can Be About 10% In The Soft PVC Used As Auxiliary Plastic Flame Retardant When The 5% To 10%. Flame Retardants, Uranium, Thorium, Plutonium, Technetium And Other Rare Metal Separation Solvent Or Extractant.
2. This Product Is Widely Used In Chemical Fiber Fabrics, Cellulose Acetate As A Flame Retardant, In Addition To Self-Extinguishing, But Also Improve Water Resistance, Cold Resistance And Antistatic Properties. The General Amount Of 5 To 10 Copies. This Product Is An Excellent Flame Retardant For Synthetic Materials, And Has A Good Role In The Promotion, Widely Used In Cellulose Acetate, Nitrocellulose Varnish, Ethyl Cellulose, Polyvinyl Chloride, Polyvinyl Acetate, Polyurethane, Phenolic Resin , In Addition To Self-Extinguishing Products, But Also Improve The Physical Properties Of Products, Products Feel Soft, Also Known As Oil Additives And Rare Elements Of The Extractant, And Flame Retardant Rubber Conveyor Belt Is The Main Flame Retardant Materials , The General Amount Of Added 5% To 10%.
3. Used As Additive Type Halogenated Phosphate Flame Retardant And Plasticizer. Molecules In Both Phosphorus And Chlorine, Flame Retardant Effect Is Remarkable, Not Volatile And Hydrolysis, Good Stability To Ultraviolet Light. Applicable To Phenolic Resin, Polyvinyl Chloride, Polyvinyl Acetate, Polyurethane And So On. Also Used As Nitrocellulose Coating Flame Retardant, PVC Flame Retardant Plasticizer, Metal Extractant, Gasoline Additives And Polyimide Processing Aids And So On. Can Improve Water Resistance, Weatherability, Cold Resistance, Antistatic Property. Reference Dosage 5% To 20%.
Antimony trioxide cannot be used as a flame retardant (except for halogenated polymers), but it has a great synergistic effect with halogen flame retardants. Because of the presence of antimony trioxide in halide, burns the generated SbCl3, SbBr3 antimony halide, such as the relative density is very large, covering the polymer surface covering effect, and also have to capture the role of free radicals in the gaseous state. For example, antimony trioxide and chlorine flame retardants and, due to chloride heat decomposition hydrogen chloride, hydrochloric acid and antimony trioxide reaction to generate chlorine antimony oxide, antimony trichloride and antimony oxychloride thermal decomposition continue to generate antimony trichloride.
The combination of hydrated zinc borate and halogen flame retardants has a good synergistic effect. Under combustion conditions, they and their pyrolysis products interact with each other so that all flame retardant elements can be used as flame retardants. Hydration reaction with phosphorus-containing flame retardant zinc borate generated three dihalide zinc and boron halide, they can capture, HO, h. in gas phase, formed in the solid phase vitreous isolation layer, heat insulation, oxygen, water dilute oxygen burning zone and take away the heat generated, so can play a larger flame retardant effect.
The thermal stability of ammonium salts is poor, and ammonia is released when heated, such as (NH4) 2SO4, and its decomposition process is as follows: [NH4] 2SO4, NH4HSO4, H2SO4, 10 NH3 up
The release of ammonia gas is a gas that dilutes the oxygen in the air. The formation of H2SO4 ACTS as the catalyst for dehydrating carbonization. Other experiments indicate that NH3 also has the following reactions in the fire: NH3 + O2 - N2 + H2O. Besides, the N2O4 of the deep oxidation product is accompanied by the N2O4, which shows that the NH3 has not only physical flame retardation, but also chemical flame retardation.
Nanocomposite materials are separately mentioned, although they are all compound flame retardant, but their principle is a little different. Nanocomposites refer to the study of one or more components in a material that are dispersed in a different component base in a nanoscale or molecular level. This study is only a decade old. Experiments show that exist in the size of the ultrafine nanomaterials, so the performance of the various types of nanocomposites than its corresponding macro or micro level have significant improvement, composite material of the thermal stability and flame retardant properties will be significantly improved.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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