News Details
Brominated flame retardant
2017-10-9 10:52:35
Brominated flame retardant
Compared with other flame retardants, bromine-type flame retardants mainly have the following advantages: 1) the flame retardant efficiency is high, the addition quantity is small, the effect on the processing performance and physical and chemical properties of the flame retardant substrate is small; 2) excellent thermal stability and water insolubility; 3) good dispersion and good compatibility with materials; 4) abundant raw materials, mature preparation technology and low price; 5) the temperature range of thermal decomposition is narrow, and the composition of flame retardant is greater than concentration and concentration. 6) various kinds of high polymer processing technology and flame retardant products can be met.
Bromine class is the main mechanism of bromine flame retardant generated gets kind of flame retardant thermal decomposition, and gets to capture pass the combustion chain reaction active free radicals (such as OH ?, O, and H,), lower bromine radicals generated activity, causing burning slow or discontinue.
RX, HX, HX + HO, X + H2O, RH + X, HX + R.
In addition, gets to dense gas and flame retardant, it can not only dilute the oxygen in the air, also can cover the surface of material, instead of air, the material reducing or self-extinguishing burning velocity.
Bromine flame retardants can be divided into reactive and additive types from the method of use; From the compound structure can be divided into polybrominated diphenyl ethers, bromine phenol, bromine bisphenol A, bromine and phthalic acid, bromine generation of polyols, bromine generation of alkanes and other new type of bromine flame retardants. The most important of these are polybrominated diphenyl ether (PBDEs), tetrabromobisphenol A (TBBPA) and hexabromocyclic HBCD (HBCD), which accounts for about 50% of the amount of brominated flame retardants.
Bromine class ten pbdes in flame retardant (DBDEs) by bromine and diphenyl ether under the effect of AlCl3 reaction system, the bromine content as high as 83, a 3% (mass fraction), thermal stability, flame retardant efficiency is high, and the price is moderate, is widely used in polystyrene, polyolefin, polyester, polyamide, thermoplastic plastic processing, also can be used in epoxy resin, phenolic resin, unsaturated polyester and other thermosetting resin flame retardant processing, is a production and consumption of larger additive containing bromine flame retardants.
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%.
There are two methods for the synthesis of decabromodiphenyl ether. One is solvent and two is solvent free.
Tetrabromobisphenol A(TBBPA) of bromine flame retardant is A bromide derivative of bisphenol A, with A bromine content of 58-8% (mass fraction), which can be divided into reactive type and additive flame retardant. The reaction type tetrabromobisphenol A is mainly used as intermediates containing brominated epoxy resin and brominated polycarbonate. It is used to prepare flame retardant resin including brominated epoxy resin, brominated polycarbonate and brominated phenolic resin.
Tetrabromobisphenol A and COCl2 reacts with bromine was 58% (mass fraction) of tetrabromo bisphenol A polycarbonate, with high thermal stability, seepage quantity is little, processing performance, less influence on the physical properties of the resin and no corrosion, etc. Add type is mainly used as epoxy resin, phenolic resin, HIPS, ABS and unsaturated resin and polyurethane material such as flame retardant, TBBPA promote polymer melt liquidity characteristics, with 40% mass fraction) can achieve very good effect on flame retardant, oxygen index can be up to 30, 9.
Two phenolic groups propane (bpa) in the solvent combined into four sniffing the china-australia bisphenol A (T.B.A), using solvent for raw material and intermediate bromide generation three bromine content such as dissolution, further and bromine reaction to smell reaction completely, high white T.B.A purity crystal, its melting point is 181 ℃
The "dioxins" problem exists in bromine flame retardants
Swiss researchers found 1986 polybrominated diphenyl ethers (PBDEs) and its flame retardant polymer pyrolysis and combustion products contain toxic and carcinogenic polybrominated diphenyl generation and dioxin (PBDD) and polybrominated diphenyl and furan (PBDF). In this year's 1989 German environmental protection bureau said in a report, with ten pbdes, eight pbdes and five pbdes flame retardant of PS, PP, PU, PBT, ABS, PVC, polycarbonate and epoxy laminate plastic containing PBDF during the thermal decomposition of 600 ℃, with polybrominated diphenyl ether flame retardant plastic shell of the television, the television after three days of continuous work, in the space atmosphere can detect tiny amounts of PBDF (2, 7 pg/m3), it is called "dioxins" problem.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Compared with other flame retardants, bromine-type flame retardants mainly have the following advantages: 1) the flame retardant efficiency is high, the addition quantity is small, the effect on the processing performance and physical and chemical properties of the flame retardant substrate is small; 2) excellent thermal stability and water insolubility; 3) good dispersion and good compatibility with materials; 4) abundant raw materials, mature preparation technology and low price; 5) the temperature range of thermal decomposition is narrow, and the composition of flame retardant is greater than concentration and concentration. 6) various kinds of high polymer processing technology and flame retardant products can be met.
Bromine class is the main mechanism of bromine flame retardant generated gets kind of flame retardant thermal decomposition, and gets to capture pass the combustion chain reaction active free radicals (such as OH ?, O, and H,), lower bromine radicals generated activity, causing burning slow or discontinue.
RX, HX, HX + HO, X + H2O, RH + X, HX + R.
In addition, gets to dense gas and flame retardant, it can not only dilute the oxygen in the air, also can cover the surface of material, instead of air, the material reducing or self-extinguishing burning velocity.
Bromine flame retardants can be divided into reactive and additive types from the method of use; From the compound structure can be divided into polybrominated diphenyl ethers, bromine phenol, bromine bisphenol A, bromine and phthalic acid, bromine generation of polyols, bromine generation of alkanes and other new type of bromine flame retardants. The most important of these are polybrominated diphenyl ether (PBDEs), tetrabromobisphenol A (TBBPA) and hexabromocyclic HBCD (HBCD), which accounts for about 50% of the amount of brominated flame retardants.
Bromine class ten pbdes in flame retardant (DBDEs) by bromine and diphenyl ether under the effect of AlCl3 reaction system, the bromine content as high as 83, a 3% (mass fraction), thermal stability, flame retardant efficiency is high, and the price is moderate, is widely used in polystyrene, polyolefin, polyester, polyamide, thermoplastic plastic processing, also can be used in epoxy resin, phenolic resin, unsaturated polyester and other thermosetting resin flame retardant processing, is a production and consumption of larger additive containing bromine flame retardants.
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%.
There are two methods for the synthesis of decabromodiphenyl ether. One is solvent and two is solvent free.
Tetrabromobisphenol A(TBBPA) of bromine flame retardant is A bromide derivative of bisphenol A, with A bromine content of 58-8% (mass fraction), which can be divided into reactive type and additive flame retardant. The reaction type tetrabromobisphenol A is mainly used as intermediates containing brominated epoxy resin and brominated polycarbonate. It is used to prepare flame retardant resin including brominated epoxy resin, brominated polycarbonate and brominated phenolic resin.
Tetrabromobisphenol A and COCl2 reacts with bromine was 58% (mass fraction) of tetrabromo bisphenol A polycarbonate, with high thermal stability, seepage quantity is little, processing performance, less influence on the physical properties of the resin and no corrosion, etc. Add type is mainly used as epoxy resin, phenolic resin, HIPS, ABS and unsaturated resin and polyurethane material such as flame retardant, TBBPA promote polymer melt liquidity characteristics, with 40% mass fraction) can achieve very good effect on flame retardant, oxygen index can be up to 30, 9.
Two phenolic groups propane (bpa) in the solvent combined into four sniffing the china-australia bisphenol A (T.B.A), using solvent for raw material and intermediate bromide generation three bromine content such as dissolution, further and bromine reaction to smell reaction completely, high white T.B.A purity crystal, its melting point is 181 ℃
The "dioxins" problem exists in bromine flame retardants
Swiss researchers found 1986 polybrominated diphenyl ethers (PBDEs) and its flame retardant polymer pyrolysis and combustion products contain toxic and carcinogenic polybrominated diphenyl generation and dioxin (PBDD) and polybrominated diphenyl and furan (PBDF). In this year's 1989 German environmental protection bureau said in a report, with ten pbdes, eight pbdes and five pbdes flame retardant of PS, PP, PU, PBT, ABS, PVC, polycarbonate and epoxy laminate plastic containing PBDF during the thermal decomposition of 600 ℃, with polybrominated diphenyl ether flame retardant plastic shell of the television, the television after three days of continuous work, in the space atmosphere can detect tiny amounts of PBDF (2, 7 pg/m3), it is called "dioxins" problem.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Spanish
French
Italian
Portuguese
Japanese
Korean
Arabic
Russian