News Details
Microencapsulation of red phosphorus of flame retardant
2017-9-7 16:22:18
Microencapsulation of red phosphorus of flame retardant
The flame retardant mechanism of red phosphorus is a good flame retardant coagent of inorganic filler system. Form a thin layer of thin film, tightly cladding on the surface of the polymer, isolating oxygen in the air to stop the combustion.
However, the use of red phosphorus alone is not enough. It is the flame retardant of ATH and MDH to improve the flame retardancy greatly. Red phosphorus is very destructive to the mechanical properties of the system, and its color limits its use. Therefore, the microencapsulation of the flame retardant red phosphorus is required.
Of red phosphorus flame retardant agent is in the red phosphorus microcapsules coated on the surface of a layer or layers of protective film formed, the cladding layer not only can prevent the red phosphorus particles with oxygen and phosphine water contact, shock and can avoid the red phosphorus due to heat and ignition. Red phosphorus microcapsules, compared with ordinary red phosphorus flame retardant efficiency is high, the effects on the physical and mechanical properties of the products is small, can improve the flame retardant and the compatibility of resin, and the low smoke, low toxicity, when mixed with resin does not emit PH3, also not easy heated by shock ignition, weatherability and stability is also better.
According to the different materials of red phosphorus coating, red phosphorus coating can be divided into three kinds: inorganic coating method, organic coating method and inorganic 2 organic compound coating method. Currently adopted more inorganic organic coated 2 red phosphorus is first on the red phosphorus coating a layer of Al (OH) 3, zinc (OH) 2 and other inorganic layer, then covered a layer of phenolic resin, melamine formaldehyde resin or epoxy organic layer, the method of surface modification is the red phosphorus ideal process.
Compared with common red phosphorus, the microencapsulation of flame retardant red phosphorus not only retains the advantages of red phosphorus, but also has more practicability. Firstly, its flame retardant efficiency is high, which has little influence on the physical and mechanical properties of the products.
It can also improve the compatibility of flame retardants and resins, which can disperse the red phosphorus evenly in the resin. Second, its thermal stability is good, can be used for some need high temperature molding processing of polymer products, and low smoke, low toxicity, do not emit PH3 when mixed with resin, also not be shock ignition, greatly reduced dust explosion danger; Once again, the cladding of red phosphorus is better than normal red phosphorus in weathering, electrical performance, application period and stability in flame retardant substrate.
Tris (2-Chloroethyl) Phosphate
Appearance: Pure Tris (2-Chloroethyl) Phosphate Is A Colorless Or Pale Yellow Oily Transparent Liquid With A Light Creamy Taste.
Refractive Index (N20D) 1.4731
Boiling Point Of 194 ° C, Flash Point Of 225 ° C
Freezing Point -64 ℃
Decomposition Temperature 240-280 ℃
Viscosity 38-47 Centipoise (20 ° C)
Phosphorus Content Of 10.8%
Chlorine Content Of 37.3%, With The General Organic Solvents (Such As Alcohol, Ketones, Aromatics, Chloroform, Etc.) Compatible, Insoluble In Aliphatic Hydrocarbons, Almost Insoluble In Water, And Hydrolytic Stability Is Good, In Alkaline Solution In A Small Amount Of Decomposition, The No Obvious Corrosion Of The Product.
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 study of silicone as a flame retardant began in the early 1980s. In 1981, Kamber et al. published a study on the mixing of polycarbonate and polymethylsiloxane to improve the performance of flame-retardant properties. The organic silicon research and development lags behind that of halogen flame retardants, phosphate flame retardants, however, as a kind of new silicone flame retardant agent halogen-free flame retardants, with its excellent flame retardancy, molding processability and environmental friendly and unique style.
Organic silicon flame retardant has silicone oil, silicone resin, polysiloxane with functional group, polycarbonate a siloxane composite and silicon gel. In the case of silicone flame retardant polymer materials, silicone flame retardants are likely to be transferred to the surface of the material to form a polymer gradient material.
Once burned, will produce silicone peculiar, contains a S I - O and a Si - C - keys of inorganic heat insulation layer, both to prevent burning into store escape, and suppress the thermal decomposition of high polymer material, to achieve the high flame retardant, low smoke, low harmful purposes.
Phosphorus-containing flame retardant flame retardant function mainly reflects in the fire polymer decomposition in the early stage, because it can promote the polymer dehydrated hair, thereby reducing the polymer produced by thermal decomposition of the number of combustible gas, and the resulting carbon film can also be isolated from outside air and heat. In general, phosphor flame retardants have the best effect on oxygen-containing polymers, which are mainly used in polymers containing hydroxyl cellulose, polyurethane and polyester. The effect of phosphorous flame retardant on hydrocarbon polymers without oxygen is relatively small.
The carbon from the expansion system is not completely lysed or oxidized by the polymer at a lower temperature. The formation rate of carbon is very rapid and involves thermal oxidation. This complex structure of carbon can be used as a barrier to break down gas and melt polymers. The expansion ratio, expansion rate, strength and composition of carbon layer are also important factors affecting the quality of carbon layer.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
The flame retardant mechanism of red phosphorus is a good flame retardant coagent of inorganic filler system. Form a thin layer of thin film, tightly cladding on the surface of the polymer, isolating oxygen in the air to stop the combustion.
However, the use of red phosphorus alone is not enough. It is the flame retardant of ATH and MDH to improve the flame retardancy greatly. Red phosphorus is very destructive to the mechanical properties of the system, and its color limits its use. Therefore, the microencapsulation of the flame retardant red phosphorus is required.
Of red phosphorus flame retardant agent is in the red phosphorus microcapsules coated on the surface of a layer or layers of protective film formed, the cladding layer not only can prevent the red phosphorus particles with oxygen and phosphine water contact, shock and can avoid the red phosphorus due to heat and ignition. Red phosphorus microcapsules, compared with ordinary red phosphorus flame retardant efficiency is high, the effects on the physical and mechanical properties of the products is small, can improve the flame retardant and the compatibility of resin, and the low smoke, low toxicity, when mixed with resin does not emit PH3, also not easy heated by shock ignition, weatherability and stability is also better.
According to the different materials of red phosphorus coating, red phosphorus coating can be divided into three kinds: inorganic coating method, organic coating method and inorganic 2 organic compound coating method. Currently adopted more inorganic organic coated 2 red phosphorus is first on the red phosphorus coating a layer of Al (OH) 3, zinc (OH) 2 and other inorganic layer, then covered a layer of phenolic resin, melamine formaldehyde resin or epoxy organic layer, the method of surface modification is the red phosphorus ideal process.
Compared with common red phosphorus, the microencapsulation of flame retardant red phosphorus not only retains the advantages of red phosphorus, but also has more practicability. Firstly, its flame retardant efficiency is high, which has little influence on the physical and mechanical properties of the products.
It can also improve the compatibility of flame retardants and resins, which can disperse the red phosphorus evenly in the resin. Second, its thermal stability is good, can be used for some need high temperature molding processing of polymer products, and low smoke, low toxicity, do not emit PH3 when mixed with resin, also not be shock ignition, greatly reduced dust explosion danger; Once again, the cladding of red phosphorus is better than normal red phosphorus in weathering, electrical performance, application period and stability in flame retardant substrate.
Tris (2-Chloroethyl) Phosphate
Appearance: Pure Tris (2-Chloroethyl) Phosphate Is A Colorless Or Pale Yellow Oily Transparent Liquid With A Light Creamy Taste.
Refractive Index (N20D) 1.4731
Boiling Point Of 194 ° C, Flash Point Of 225 ° C
Freezing Point -64 ℃
Decomposition Temperature 240-280 ℃
Viscosity 38-47 Centipoise (20 ° C)
Phosphorus Content Of 10.8%
Chlorine Content Of 37.3%, With The General Organic Solvents (Such As Alcohol, Ketones, Aromatics, Chloroform, Etc.) Compatible, Insoluble In Aliphatic Hydrocarbons, Almost Insoluble In Water, And Hydrolytic Stability Is Good, In Alkaline Solution In A Small Amount Of Decomposition, The No Obvious Corrosion Of The Product.
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 study of silicone as a flame retardant began in the early 1980s. In 1981, Kamber et al. published a study on the mixing of polycarbonate and polymethylsiloxane to improve the performance of flame-retardant properties. The organic silicon research and development lags behind that of halogen flame retardants, phosphate flame retardants, however, as a kind of new silicone flame retardant agent halogen-free flame retardants, with its excellent flame retardancy, molding processability and environmental friendly and unique style.
Organic silicon flame retardant has silicone oil, silicone resin, polysiloxane with functional group, polycarbonate a siloxane composite and silicon gel. In the case of silicone flame retardant polymer materials, silicone flame retardants are likely to be transferred to the surface of the material to form a polymer gradient material.
Once burned, will produce silicone peculiar, contains a S I - O and a Si - C - keys of inorganic heat insulation layer, both to prevent burning into store escape, and suppress the thermal decomposition of high polymer material, to achieve the high flame retardant, low smoke, low harmful purposes.
Phosphorus-containing flame retardant flame retardant function mainly reflects in the fire polymer decomposition in the early stage, because it can promote the polymer dehydrated hair, thereby reducing the polymer produced by thermal decomposition of the number of combustible gas, and the resulting carbon film can also be isolated from outside air and heat. In general, phosphor flame retardants have the best effect on oxygen-containing polymers, which are mainly used in polymers containing hydroxyl cellulose, polyurethane and polyester. The effect of phosphorous flame retardant on hydrocarbon polymers without oxygen is relatively small.
The carbon from the expansion system is not completely lysed or oxidized by the polymer at a lower temperature. The formation rate of carbon is very rapid and involves thermal oxidation. This complex structure of carbon can be used as a barrier to break down gas and melt polymers. The expansion ratio, expansion rate, strength and composition of carbon layer are also important factors affecting the quality of carbon layer.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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