News Details
Bromide flame retardants for extruded polystyrene
2017-12-1 10:50:03
Bromide flame retardants for extruded polystyrene
The ten brominated diphenyl ethers are commonly used in bromine flame retardants for extruded polystyrene. The structure is as follows: bromine content is 83%, flame retardancy is good, excellent thermal stability and hydrolytic stability. It is often mixed with antimony oxide to improve flame retardancy. The flame retardancy of bromide flame retardants for extruded polystyrene mainly depends on the hydrogen bromide generated during combustion, and finally generates three antimony bromide, which destroys the combustible gases in meteorology.
This kind of finishing agent is mainly using acrylate adhesive to fasten the flame retardant on the fabric to improve the washability. The general bromide and antimony should be mixed according to the ratio of the mass ratio of 2:1 to the maximum flame retardancy.
The particles of bromide flame retardant for extruded polystyrene must be very thin, the lower the viscosity, the better the dispersion, the better the flame-retardant effect is, and the washability can also be improved correspondingly. Formula: flame retardant (ten brominated diphenyl ether and antimony oxide), 40% adhesive Ca (acrylic ester) 19% crosslinking agent C (etherification hydroxymethyl) 1.9% penetrant JFC 0.5% softener 3%.
The flame retardant finishing technology of bromine flame retardant for extruded polystyrene is as follows: two immersion two rolling (rolling rate 70%), drying, baking (140, 3 minutes), water washing and drying. Other aromatic bromides, such as diethylene glycol ether of bisphenol A, also commonly used in flame retardant tribromophenol derivatives of synthetic fiber finishing agent.
HBCD is a kind of high brominated flame retardants have sufficient thermal stability and good fluidity; heat stable six bromo twelve alkyl ring is six bromo twelve alkyl ring modified product of flame retardant, its molecular structure is large, white appearance, excellent thermal stability, no free bromine, can make machining the machine more safety, more excellent product performance, especially for high temperature plastic products processing, such as extruded insulation board (XPS) is more suitable. The engineering plastics containing the product can be used for various injection molding and extrusion applications, can meet the need of processing, recycling and processing can be carried out smoothly and fuel resistance and reuse.
HBCD is mainly used in extruded polystyrene (XPS) insulation board, with excellent quality, oxygen index (OI) can be more than 32, to meet the standard of self extinguishing. The same product also has good thermal stability and less addition to other polymer systems, and there is no need to add other auxiliary flame retardants, such as antimony oxide. It has a very high flame retardant efficiency, and a very small amount can achieve excellent flame retardant effect. Compared with the traditional flame retardant, it has a lower cost of adding, that is, superior price performance ratio.
Tris(2-chloroethyl)phosphate(TCEP)
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(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 EU believes that some flame retardants used in textiles in the presence of harm to human health, therefore has released 79/663/eec, 83/264/eec and 2003/11/ec instructions to limit the use of flame retardant finishing agent, has a total of 5 kinds of flame retardants are restricted, respectively: Three - (2,3- - dibromopropyl) phosphate tris (2,3-dibromopropyl) phosphate (Tris), three - (N-heterocyclic propenyl) - phosphine oxide tris-aziridinyl-phosphinoxide (TEPA), polybrominated biphenyls (PBB, Polybromobiphenyls) diphenylether five polybrominated diphenyl ether (PBDE), pentabromo derivative c12h5br5o, diphenylether eight polybrominated diphenyl ether (octabde), octabromo derivative c12h5br8o.
Compared with the traditional brominated flame retardants, the new type of flame retardant can increase the heat resistance of PE resin by 20 degrees C. Its main applications: wire and cable and structural film. It is said that the new flame retardant has little effect on the tensile strength and elongation at break of PE resin, has relatively low surface migration, and has little influence on printing, sealing and two processing. The resin extrusion processing temperature can reach 287 C, and the amount can reach 18%~20%. The flame retardancy level can reach V-2 level.
At present, the flame retardants can be divided into organic and inorganic, halogen and non halogen, which play an important role in reducing the loss of life and property caused by fire. However, with the recognition of all kinds of hazards such as developmental toxicity, endocrine disruption and reproductive toxicity of flame retardants, combined with the current use of flame retardants, many European Union and many states have issued bills to limit the use of flame retardants in children's products.
The United Nations "Stockholm Convention on persistent organic pollutants, the prohibition of the use of six bromine in the textile field ring twelve alkyl (HBCD); federal regulations and Canada" dangerous products law "on children's pajamas, mattresses and other materials have clear requirements and time limit, combustion retardant performance requirements, do not meet the requirements the goods will be informed once encountered checks and ordered to recall.
A number of states have the flame retardant restrictions included in the filing procedures, mainly for polybrominated diphenyl ethers (PBDEs) and phosphate (TDCPP, TCEP and TCPP) flame retardants. In addition, the EU toy safety directive also introduces the specific limits for the flame retardants in toys. All the toy companies importing to the European Union will ask to ensure that the content of phosphates and flame retardants in their products can not exceed 5 mg / kg (PPM).
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
The ten brominated diphenyl ethers are commonly used in bromine flame retardants for extruded polystyrene. The structure is as follows: bromine content is 83%, flame retardancy is good, excellent thermal stability and hydrolytic stability. It is often mixed with antimony oxide to improve flame retardancy. The flame retardancy of bromide flame retardants for extruded polystyrene mainly depends on the hydrogen bromide generated during combustion, and finally generates three antimony bromide, which destroys the combustible gases in meteorology.
This kind of finishing agent is mainly using acrylate adhesive to fasten the flame retardant on the fabric to improve the washability. The general bromide and antimony should be mixed according to the ratio of the mass ratio of 2:1 to the maximum flame retardancy.
The particles of bromide flame retardant for extruded polystyrene must be very thin, the lower the viscosity, the better the dispersion, the better the flame-retardant effect is, and the washability can also be improved correspondingly. Formula: flame retardant (ten brominated diphenyl ether and antimony oxide), 40% adhesive Ca (acrylic ester) 19% crosslinking agent C (etherification hydroxymethyl) 1.9% penetrant JFC 0.5% softener 3%.
The flame retardant finishing technology of bromine flame retardant for extruded polystyrene is as follows: two immersion two rolling (rolling rate 70%), drying, baking (140, 3 minutes), water washing and drying. Other aromatic bromides, such as diethylene glycol ether of bisphenol A, also commonly used in flame retardant tribromophenol derivatives of synthetic fiber finishing agent.
HBCD is a kind of high brominated flame retardants have sufficient thermal stability and good fluidity; heat stable six bromo twelve alkyl ring is six bromo twelve alkyl ring modified product of flame retardant, its molecular structure is large, white appearance, excellent thermal stability, no free bromine, can make machining the machine more safety, more excellent product performance, especially for high temperature plastic products processing, such as extruded insulation board (XPS) is more suitable. The engineering plastics containing the product can be used for various injection molding and extrusion applications, can meet the need of processing, recycling and processing can be carried out smoothly and fuel resistance and reuse.
HBCD is mainly used in extruded polystyrene (XPS) insulation board, with excellent quality, oxygen index (OI) can be more than 32, to meet the standard of self extinguishing. The same product also has good thermal stability and less addition to other polymer systems, and there is no need to add other auxiliary flame retardants, such as antimony oxide. It has a very high flame retardant efficiency, and a very small amount can achieve excellent flame retardant effect. Compared with the traditional flame retardant, it has a lower cost of adding, that is, superior price performance ratio.
Tris(2-chloroethyl)phosphate(TCEP)
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(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 EU believes that some flame retardants used in textiles in the presence of harm to human health, therefore has released 79/663/eec, 83/264/eec and 2003/11/ec instructions to limit the use of flame retardant finishing agent, has a total of 5 kinds of flame retardants are restricted, respectively: Three - (2,3- - dibromopropyl) phosphate tris (2,3-dibromopropyl) phosphate (Tris), three - (N-heterocyclic propenyl) - phosphine oxide tris-aziridinyl-phosphinoxide (TEPA), polybrominated biphenyls (PBB, Polybromobiphenyls) diphenylether five polybrominated diphenyl ether (PBDE), pentabromo derivative c12h5br5o, diphenylether eight polybrominated diphenyl ether (octabde), octabromo derivative c12h5br8o.
Compared with the traditional brominated flame retardants, the new type of flame retardant can increase the heat resistance of PE resin by 20 degrees C. Its main applications: wire and cable and structural film. It is said that the new flame retardant has little effect on the tensile strength and elongation at break of PE resin, has relatively low surface migration, and has little influence on printing, sealing and two processing. The resin extrusion processing temperature can reach 287 C, and the amount can reach 18%~20%. The flame retardancy level can reach V-2 level.
At present, the flame retardants can be divided into organic and inorganic, halogen and non halogen, which play an important role in reducing the loss of life and property caused by fire. However, with the recognition of all kinds of hazards such as developmental toxicity, endocrine disruption and reproductive toxicity of flame retardants, combined with the current use of flame retardants, many European Union and many states have issued bills to limit the use of flame retardants in children's products.
The United Nations "Stockholm Convention on persistent organic pollutants, the prohibition of the use of six bromine in the textile field ring twelve alkyl (HBCD); federal regulations and Canada" dangerous products law "on children's pajamas, mattresses and other materials have clear requirements and time limit, combustion retardant performance requirements, do not meet the requirements the goods will be informed once encountered checks and ordered to recall.
A number of states have the flame retardant restrictions included in the filing procedures, mainly for polybrominated diphenyl ethers (PBDEs) and phosphate (TDCPP, TCEP and TCPP) flame retardants. In addition, the EU toy safety directive also introduces the specific limits for the flame retardants in toys. All the toy companies importing to the European Union will ask to ensure that the content of phosphates and flame retardants in their products can not exceed 5 mg / kg (PPM).
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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