News Details
Environmental flame retardant
2017-9-6 17:22:44
Environmental flame retardant
The flame retardant of N2P is one of the hot spots in the world today. BL2 is an N2P flame retardant, and its main raw material is phosphoric acid and urea, but it is different from ordinary polyphosphate because of its special synthetic process. The production technics, production equipment and cost of BL2 flame retardant are described separately.
The environmental protection flame retardant has the advantages of simple preparation, low energy consumption, low investment in production equipment, low cost and friendly environment. It is in line with the development trend of world flame retardant. BL2 green flame retardant can be used to produce flame retardant solid wood, flame retardant man-made board and flame retardant textiles, and has been applied in the forest grassland fire protection.
In recent years, the demand for flame retardants has increased year by year, as the domestic and foreign fire safety standards become more stringent and people's awareness of fire prevention gradually increases.
In the environment of flame retardants is put forward under the situation of environmental protection, security, and so on conditions, no halogenated flame retardants requirements is increasing day by day, N2P flame retardants as a halogen-free flame retardant, does not exist the disadvantage of phosphorus-containing flame retardant, has attracted widespread attention. BL2 environmentally friendly flame retardant is Beijing forestry university, school of materials science and technology developed a new type of N2P flame retardants, and the flame retardants have good environmental protection non-toxic, flame retardant, smoke suppression, a dose of double effect, low cost advantages, can be widely used in broad spectrum man-made board, wood, textile, paper, flammable materials have flame retardant processing.
The synthesis method of the laboratory is: to add phosphoric acid (industrial grade, 85%) in three flask, stir and heat; Add urea to the flask, open the condenser, and continue to heat the mixture.
Distribute the material evenly; Add the catalyst evenly, and you can observe the intense reaction of the mixture. Continue heating, and the mixing speed can be accelerated appropriately. After you stop heating, the blender will continue to work for a few minutes. Pour the reactants out, cool and solidify, then crush.
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%.
The catalyst has the dual effect of catalyzing reaction and controlling the degree of reaction. Due to the effect of catalyst, phosphoric acid and urea the relatively mild reaction conditions, need the temperature about 138 ℃, the highest finish the polymerization process need only about 40 min, and does not require specialised airtight production equipment.
The industrial production BL2 environmental flame retardant needs to be made simple improvement to the existing stainless steel urea rubber reactor.
(1) increase fast effective forced condensation water circulation system after adding catalyst, reaction materials, foaming, although the material overflow in general will not happen, but the cooling system can be fast cooling reaction material under special circumstances, so as to avoid spray is expected to occur.
(2) expand the exhaust pipe, urea under high temperature increased ammonia absorption system can quickly decompose and emit large amounts of gas, if the exhaust pipe is not big enough, a lot of gas cannot discharge will make the pressure inside the reaction kettle, material overflow occur easily, so you need to expand the exhaust pipe. In addition, because there is a lot of ammonia in the exhaust gas, the ammonia absorption system can be set up to avoid the pollution environment.
(3) increase the temperature monitoring system This can be convenient to know the temperature inside the reaction kettle, so as to reach the corresponding temperature to the addition of urea and catalyst, the reaction kettle can also through the temperature monitoring system to effectively control the degree of reaction.
Heating systems and agitators also require local improvements. The cost of retrofitting stainless steel urea rubber reaction kettle is very few, only RMB 10,000 ~ 20,000 yuan. If liquid flame retardants are to be produced, additional water pipes will be added to the reactor. In addition, you can add further kettle internal pressure and pH value of reactants display system, which can better control the quality of the flame retardant production, of course some equipment to improve the cost will increase accordingly.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
The flame retardant of N2P is one of the hot spots in the world today. BL2 is an N2P flame retardant, and its main raw material is phosphoric acid and urea, but it is different from ordinary polyphosphate because of its special synthetic process. The production technics, production equipment and cost of BL2 flame retardant are described separately.
The environmental protection flame retardant has the advantages of simple preparation, low energy consumption, low investment in production equipment, low cost and friendly environment. It is in line with the development trend of world flame retardant. BL2 green flame retardant can be used to produce flame retardant solid wood, flame retardant man-made board and flame retardant textiles, and has been applied in the forest grassland fire protection.
In recent years, the demand for flame retardants has increased year by year, as the domestic and foreign fire safety standards become more stringent and people's awareness of fire prevention gradually increases.
In the environment of flame retardants is put forward under the situation of environmental protection, security, and so on conditions, no halogenated flame retardants requirements is increasing day by day, N2P flame retardants as a halogen-free flame retardant, does not exist the disadvantage of phosphorus-containing flame retardant, has attracted widespread attention. BL2 environmentally friendly flame retardant is Beijing forestry university, school of materials science and technology developed a new type of N2P flame retardants, and the flame retardants have good environmental protection non-toxic, flame retardant, smoke suppression, a dose of double effect, low cost advantages, can be widely used in broad spectrum man-made board, wood, textile, paper, flammable materials have flame retardant processing.
The synthesis method of the laboratory is: to add phosphoric acid (industrial grade, 85%) in three flask, stir and heat; Add urea to the flask, open the condenser, and continue to heat the mixture.
Distribute the material evenly; Add the catalyst evenly, and you can observe the intense reaction of the mixture. Continue heating, and the mixing speed can be accelerated appropriately. After you stop heating, the blender will continue to work for a few minutes. Pour the reactants out, cool and solidify, then crush.
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%.
The catalyst has the dual effect of catalyzing reaction and controlling the degree of reaction. Due to the effect of catalyst, phosphoric acid and urea the relatively mild reaction conditions, need the temperature about 138 ℃, the highest finish the polymerization process need only about 40 min, and does not require specialised airtight production equipment.
The industrial production BL2 environmental flame retardant needs to be made simple improvement to the existing stainless steel urea rubber reactor.
(1) increase fast effective forced condensation water circulation system after adding catalyst, reaction materials, foaming, although the material overflow in general will not happen, but the cooling system can be fast cooling reaction material under special circumstances, so as to avoid spray is expected to occur.
(2) expand the exhaust pipe, urea under high temperature increased ammonia absorption system can quickly decompose and emit large amounts of gas, if the exhaust pipe is not big enough, a lot of gas cannot discharge will make the pressure inside the reaction kettle, material overflow occur easily, so you need to expand the exhaust pipe. In addition, because there is a lot of ammonia in the exhaust gas, the ammonia absorption system can be set up to avoid the pollution environment.
(3) increase the temperature monitoring system This can be convenient to know the temperature inside the reaction kettle, so as to reach the corresponding temperature to the addition of urea and catalyst, the reaction kettle can also through the temperature monitoring system to effectively control the degree of reaction.
Heating systems and agitators also require local improvements. The cost of retrofitting stainless steel urea rubber reaction kettle is very few, only RMB 10,000 ~ 20,000 yuan. If liquid flame retardants are to be produced, additional water pipes will be added to the reactor. In addition, you can add further kettle internal pressure and pH value of reactants display system, which can better control the quality of the flame retardant production, of course some equipment to improve the cost will increase accordingly.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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