News Details
Polyurethane environmental protection flame retardant
2017-11-10 15:34:48
Polyurethane environmental protection flame retardant
In recent years, the development of environmentally friendly polyurethane flame retardant has halogen free, low smoke, low toxicity characteristics, in line with the requirements of ecological and environmental protection, but also an important way of halogen free flame retardants
Intumescent flame retardant system because of its "three sources" (acid source, carbon source) the synergistic effect on Combustion in porous carbon material surface to form a dense layer, which can prevent the further degradation of the polymer layer and combustible surface to release, and can prevent the heat transfer to polymer and isolate the oxygen source, thus stop the spread and spread of flame. Compared with the conventional halogen containing flame retardants, intumescent flame retardant in the combustion process greatly reduces the generation of toxic and corrosive gases, and respected by the flame retardant industry, will become the main stream of flame retardant development in the future.
Nanotechnology is one of the basic technologies required for the development of information technology and to solve environmental problems. The nano materials is the use of nanotechnology materials synthesis, the particle size to the nanometer level. The technical content of nano materials, the high quality of the product is high, has attracted much attention. The nano flame retardant is a new development direction of flame retardants such as nano field. High purity, particle size of magnesium hydroxide super refinement, good flame retardant performance, there is potential for development.
In the synthesis of flame retardant masterbatch in the fiber is one of the important methods to solve the problem of durability of flame retardant synthetic fiber, the fiber strength decreased, but the existing subsequent dyeing and finishing of flame retardant in flame retardant and easy exudation and dyestuff chemical reaction caused flame retardant effect decline and other issues. Therefore, the development of the fiber strength effect of flame retardant small in the following, in the dyeing and finishing process of stable performance is the development direction.
The flame retardant finishing of textiles can be carried out by using microcapsule technology, surface grafting technology, foam coating technology, etc., which can not only reduce the amount of sewage, but also obtain durable flame retardant effect, but the cost is high, and it is difficult to popularize and apply. With the continuous development of science and technology, some new polyurethane environmental protection flame retardants will have good prospects for development.
In short, the development of low toxicity, harmless, smoke suppression polyurethane flame retardant and its application technology is the main trend of flame retardant development
Environmental protection flame retardants are widely used, and can be used for fire-retardant treatment of broad spectrum inflammable products such as wood-based panel, solid wood, textiles and paper. Among them, the application of urea glue in wood-based panel can not only make the plate reach the flame retardant grade, but also effectively reduce the formaldehyde content in the board, so as to improve the environmental protection grade, and play a double effect.
As environmental friendly flame retardant has the advantages of environmental friendliness, high efficiency and low cost, it has been used in forest and grassland fire prevention, and has achieved remarkable results in the fire test of sensitive areas where fire prone. Hebei County of Pingquan province Huangtuliangzi forest application BL2 environmental friendly flame retardant in fire prevention of forest and steppe under different concentration tests.
Tris(2-chloroethyl)phosphate(TCEP)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 fire retardant for test is ejected from the "20% concentration of fire" two words (to test showed that the flame retardant agent spraying position in BL2 environmental friendly flame retardant with red dye), flame retardant to be dry, the staff from the wind in the wind 4 environment to spray a fire ignited weeds. Flame retardant place gradually extinguished, after the test can be seen using flame retardant spray into the "fire" retained, but not around the spray flame retardant weed is completely burnt to ashes, the flame retardant effect significantly.
Adding flame retardant in combustible materials, flame retardant glass at high temperature and stable foam layer with heat and oxygen, prevent flammable gas to escape the role of flame retardancy. Such as organic phosphorus flame retardant, heat can produce a more stable structure of cross-linked solid material or char layer. The charring layer can prevent further polymer pyrolysis, can prevent the internal thermal decomposition products into the gas phase in the combustion process.
According to the combustion of the chain reaction theory, maintain combustion is the free radicals. The flame retardant in the gas phase combustion zone in the combustion reaction to capture free radicals, prevent the spread of flame, the combustion zone of the flame density decreased, eventually make the combustion reaction rate decreased until termination. Such as halogen containing flame retardant evaporation temperature and decomposition temperature of polymer the same or similar, when the polymer is heated to decompose, flame retardant and volatilization, the halogen containing flame retardant and thermal decomposition products at the same time in the gas phase combustion zone, halogen can capture the combustion reaction of free radicals, prevent the spread of flame, the combustion zone of the flame density decreases, the combustion reaction speed decreased until the final stop.
When the flame retardant is heated, the non combustible gas is decomposed, and the combustible gas concentration is reduced to below the burning limit, and the oxygen concentration in the combustion zone is diluted to prevent the combustion from continuing, so as to achieve the purpose of flame retardant
Flame retardant has good prospects for development. The development trend: halogen flame retardants will continue to use, but the product structure will be adjusted, but as people pay more attention to environmental protection, halogen-free flame retardant will become the inevitable trend; the phosphorus nitrogen expansion type flame retardant will get further development; flame-retardant, non-toxic smoke suppression, such as modified aluminum hydroxide, magnesium hydroxide, zinc borate, especially can be used instead of magnesium hydroxide of high temperature will be further developed.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
In recent years, the development of environmentally friendly polyurethane flame retardant has halogen free, low smoke, low toxicity characteristics, in line with the requirements of ecological and environmental protection, but also an important way of halogen free flame retardants
Intumescent flame retardant system because of its "three sources" (acid source, carbon source) the synergistic effect on Combustion in porous carbon material surface to form a dense layer, which can prevent the further degradation of the polymer layer and combustible surface to release, and can prevent the heat transfer to polymer and isolate the oxygen source, thus stop the spread and spread of flame. Compared with the conventional halogen containing flame retardants, intumescent flame retardant in the combustion process greatly reduces the generation of toxic and corrosive gases, and respected by the flame retardant industry, will become the main stream of flame retardant development in the future.
Nanotechnology is one of the basic technologies required for the development of information technology and to solve environmental problems. The nano materials is the use of nanotechnology materials synthesis, the particle size to the nanometer level. The technical content of nano materials, the high quality of the product is high, has attracted much attention. The nano flame retardant is a new development direction of flame retardants such as nano field. High purity, particle size of magnesium hydroxide super refinement, good flame retardant performance, there is potential for development.
In the synthesis of flame retardant masterbatch in the fiber is one of the important methods to solve the problem of durability of flame retardant synthetic fiber, the fiber strength decreased, but the existing subsequent dyeing and finishing of flame retardant in flame retardant and easy exudation and dyestuff chemical reaction caused flame retardant effect decline and other issues. Therefore, the development of the fiber strength effect of flame retardant small in the following, in the dyeing and finishing process of stable performance is the development direction.
The flame retardant finishing of textiles can be carried out by using microcapsule technology, surface grafting technology, foam coating technology, etc., which can not only reduce the amount of sewage, but also obtain durable flame retardant effect, but the cost is high, and it is difficult to popularize and apply. With the continuous development of science and technology, some new polyurethane environmental protection flame retardants will have good prospects for development.
In short, the development of low toxicity, harmless, smoke suppression polyurethane flame retardant and its application technology is the main trend of flame retardant development
Environmental protection flame retardants are widely used, and can be used for fire-retardant treatment of broad spectrum inflammable products such as wood-based panel, solid wood, textiles and paper. Among them, the application of urea glue in wood-based panel can not only make the plate reach the flame retardant grade, but also effectively reduce the formaldehyde content in the board, so as to improve the environmental protection grade, and play a double effect.
As environmental friendly flame retardant has the advantages of environmental friendliness, high efficiency and low cost, it has been used in forest and grassland fire prevention, and has achieved remarkable results in the fire test of sensitive areas where fire prone. Hebei County of Pingquan province Huangtuliangzi forest application BL2 environmental friendly flame retardant in fire prevention of forest and steppe under different concentration tests.
Tris(2-chloroethyl)phosphate(TCEP)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 fire retardant for test is ejected from the "20% concentration of fire" two words (to test showed that the flame retardant agent spraying position in BL2 environmental friendly flame retardant with red dye), flame retardant to be dry, the staff from the wind in the wind 4 environment to spray a fire ignited weeds. Flame retardant place gradually extinguished, after the test can be seen using flame retardant spray into the "fire" retained, but not around the spray flame retardant weed is completely burnt to ashes, the flame retardant effect significantly.
Adding flame retardant in combustible materials, flame retardant glass at high temperature and stable foam layer with heat and oxygen, prevent flammable gas to escape the role of flame retardancy. Such as organic phosphorus flame retardant, heat can produce a more stable structure of cross-linked solid material or char layer. The charring layer can prevent further polymer pyrolysis, can prevent the internal thermal decomposition products into the gas phase in the combustion process.
According to the combustion of the chain reaction theory, maintain combustion is the free radicals. The flame retardant in the gas phase combustion zone in the combustion reaction to capture free radicals, prevent the spread of flame, the combustion zone of the flame density decreased, eventually make the combustion reaction rate decreased until termination. Such as halogen containing flame retardant evaporation temperature and decomposition temperature of polymer the same or similar, when the polymer is heated to decompose, flame retardant and volatilization, the halogen containing flame retardant and thermal decomposition products at the same time in the gas phase combustion zone, halogen can capture the combustion reaction of free radicals, prevent the spread of flame, the combustion zone of the flame density decreases, the combustion reaction speed decreased until the final stop.
When the flame retardant is heated, the non combustible gas is decomposed, and the combustible gas concentration is reduced to below the burning limit, and the oxygen concentration in the combustion zone is diluted to prevent the combustion from continuing, so as to achieve the purpose of flame retardant
Flame retardant has good prospects for development. The development trend: halogen flame retardants will continue to use, but the product structure will be adjusted, but as people pay more attention to environmental protection, halogen-free flame retardant will become the inevitable trend; the phosphorus nitrogen expansion type flame retardant will get further development; flame-retardant, non-toxic smoke suppression, such as modified aluminum hydroxide, magnesium hydroxide, zinc borate, especially can be used instead of magnesium hydroxide of high temperature will be further developed.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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