News Details
Development direction of inorganic flame retardant
2017-10-9 10:52:46
Development direction of inorganic flame retardant
Inorganic flame retardants have the characteristics of good thermal stability, non-volatile, non-corrosive and toxic gases, and are cheap, and the inorganic flame retardants account for more than half of all kinds of flame retardants. The main varieties are: aluminum hydroxide, magnesium hydroxide, red phosphorus, antimony oxide, molybdenum oxide, zirconia, ammonium molybdate, zinc borate, etc., of which aluminum hydroxide (ATH) accounts for more than 80% of inorganic flame retardants. But because of the difference of flame retardant effect of inorganic flame retardant, the new technology should be adopted. The development direction of inorganic flame retardants includes ultrafine, surface modification, macromolecular bonding and so on.
Surface modification of the development direction of inorganic flame retardants.
The inorganic flame retardants have strong polarity and hydrophilic properties, and the compatibility of non-polar polymer materials is poor, and the interface is difficult to form good bonding and adhesion. In order to improve the adhesion and interface affinity of the polymer, it is one of the most effective methods for surface treatment. Commonly used coupling agents are silane and titanate.
The strength of the flexural strength and the tensile strength of the epoxy resin can be effectively improved by the treatment of the ATH after silane treatment. The ATH, treated with ethylene silane, can be used to improve the flame retardancy, heat resistance and moisture resistance of crosslinked vinyl acetate copolymer. Titanate coupling agent and silane coupling agent can be used and can produce synergistic effect. After dealing with the surface modification of ATH surface activity improved, increased the affinity between the resin, improve the physical and mechanical properties of the products, increase the processing fluidity of the resin, reduces the ATH surface moisture absorption rate, improve the flame retardant products of the various electrical properties, and flame retardant effect can be increased from V grade 1 to grade V 0.
The development direction of inorganic flame retardants is superfine. At present, the superrefinement and nanometer of ATH are the main research and development direction. The large amount of addition of ATH will reduce the mechanical properties of the material, while the ultra-detailed, especially the nano-level ATH filling plastic, will enhance the effect of the rigid particle plasticizing enhancement.
This is because the fire retardant function is controlled by chemical reaction, and the smaller the particle size of the equivalent flame retardant, the bigger the surface area, the better the flame retardant effect. On the other hand, superfine, nano-sized ATH, enhances the interaction of the interface, can be dispersed more evenly in the matrix resin, and improves the mechanical properties of the co-mixtures more effectively.
Tris(2-chloroethyl)phosphate(TCEP)
Product Name: Trichloroethyl Phosphate Flame Retardant Plasticizer; Tris (β-Chloroethyl) Phosphate; Bis (2-Chloroethyl) Phosphate With 2-Chloroethyl Phosphate; Tris (β-Chloroethyl) Phosphoric Acid Ester; Tris (2-Chloroethyl) Phosphate; TCEP; Trichloroethyl Phosphate
CAS RN: 115-96-8
EINECS Number: 204-118-5
Molecular Formula: C6H12Cl3O4P
Molecular Weight: 285.4898
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%.
In the fire, smoke is the first and the most easy to death and bungle fire time factors, so the contemporary "flame" is the equal of "smoke suppression", but for some plastic, such as PVC, "smoke suppression" is more important than "flame". Halogenated polymers, halogenated flame retardants and antimony compounds are the main sources of smoke. Therefore, besides the non-halogenation of flame retardants is the main way to reduce the amount of smoke, the addition of anti-smoking agent to PVC and other halogen polymers is another measure to solve the cigarette smoke.
Molybdenum is thought to be the best smoke inhibitor, containing a small amount of zinc and molybdenum complex, with 4% added to PVC, and the amount of cigarette smoke can be reduced by a third. Because of molybdenum compound is more expensive, the use of zinc borate, ferrocene, aluminum hydroxide, silicon compounds, etc, with a small amount of molybdenum compound is the way of solving the problem of suppressing smoke more reality, and aluminum hydroxide ammonium molybdate compound, 5 ~ 10, is added in the PVC smoke quantity can be reduced by 43%.
Microcapsule technology can prevent the migration of flame retardant, improve the flame retardant effect and improve the thermal stability, change many advantages, such as dosage forms of components between the composite and efficiency, as well as making multifunctional flame retardant material is also very good. At present, China is exploring, such as hunan plastics research institute has developed microencapsulated red phosphorus, successful application in PE, PP, PS, ABS resin, the flame retardant effect is good. The microencapsulated phosphodibromophenyl phosphate and the microencapsulated chloroprene 70 were developed by anhui chemical research institute, which also achieved good results.
Flame retardant properties of the crosslinked polymer is much better than the linear polymer, so when the thermoplastic processing to add a small amount of crosslinking agent, make the plastic part of the mesh structure, not only can improve the dispersivity of the flame retardant, has proved to be plastic burns produce carbon effect, improve the flame retardant performance, and can increase the products of the physical and mechanical properties, weather resistance, heat resistance, etc. If a small amount of quaternary ammonium salt is added to soft PVC, it will be heated to form crosslinked flame retardant materials; The high polymer can be crosslinked by radiation method, metal oxide and crosslinking agent.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Inorganic flame retardants have the characteristics of good thermal stability, non-volatile, non-corrosive and toxic gases, and are cheap, and the inorganic flame retardants account for more than half of all kinds of flame retardants. The main varieties are: aluminum hydroxide, magnesium hydroxide, red phosphorus, antimony oxide, molybdenum oxide, zirconia, ammonium molybdate, zinc borate, etc., of which aluminum hydroxide (ATH) accounts for more than 80% of inorganic flame retardants. But because of the difference of flame retardant effect of inorganic flame retardant, the new technology should be adopted. The development direction of inorganic flame retardants includes ultrafine, surface modification, macromolecular bonding and so on.
Surface modification of the development direction of inorganic flame retardants.
The inorganic flame retardants have strong polarity and hydrophilic properties, and the compatibility of non-polar polymer materials is poor, and the interface is difficult to form good bonding and adhesion. In order to improve the adhesion and interface affinity of the polymer, it is one of the most effective methods for surface treatment. Commonly used coupling agents are silane and titanate.
The strength of the flexural strength and the tensile strength of the epoxy resin can be effectively improved by the treatment of the ATH after silane treatment. The ATH, treated with ethylene silane, can be used to improve the flame retardancy, heat resistance and moisture resistance of crosslinked vinyl acetate copolymer. Titanate coupling agent and silane coupling agent can be used and can produce synergistic effect. After dealing with the surface modification of ATH surface activity improved, increased the affinity between the resin, improve the physical and mechanical properties of the products, increase the processing fluidity of the resin, reduces the ATH surface moisture absorption rate, improve the flame retardant products of the various electrical properties, and flame retardant effect can be increased from V grade 1 to grade V 0.
The development direction of inorganic flame retardants is superfine. At present, the superrefinement and nanometer of ATH are the main research and development direction. The large amount of addition of ATH will reduce the mechanical properties of the material, while the ultra-detailed, especially the nano-level ATH filling plastic, will enhance the effect of the rigid particle plasticizing enhancement.
This is because the fire retardant function is controlled by chemical reaction, and the smaller the particle size of the equivalent flame retardant, the bigger the surface area, the better the flame retardant effect. On the other hand, superfine, nano-sized ATH, enhances the interaction of the interface, can be dispersed more evenly in the matrix resin, and improves the mechanical properties of the co-mixtures more effectively.
Tris(2-chloroethyl)phosphate(TCEP)
Product Name: Trichloroethyl Phosphate Flame Retardant Plasticizer; Tris (β-Chloroethyl) Phosphate; Bis (2-Chloroethyl) Phosphate With 2-Chloroethyl Phosphate; Tris (β-Chloroethyl) Phosphoric Acid Ester; Tris (2-Chloroethyl) Phosphate; TCEP; Trichloroethyl Phosphate
CAS RN: 115-96-8
EINECS Number: 204-118-5
Molecular Formula: C6H12Cl3O4P
Molecular Weight: 285.4898
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%.
In the fire, smoke is the first and the most easy to death and bungle fire time factors, so the contemporary "flame" is the equal of "smoke suppression", but for some plastic, such as PVC, "smoke suppression" is more important than "flame". Halogenated polymers, halogenated flame retardants and antimony compounds are the main sources of smoke. Therefore, besides the non-halogenation of flame retardants is the main way to reduce the amount of smoke, the addition of anti-smoking agent to PVC and other halogen polymers is another measure to solve the cigarette smoke.
Molybdenum is thought to be the best smoke inhibitor, containing a small amount of zinc and molybdenum complex, with 4% added to PVC, and the amount of cigarette smoke can be reduced by a third. Because of molybdenum compound is more expensive, the use of zinc borate, ferrocene, aluminum hydroxide, silicon compounds, etc, with a small amount of molybdenum compound is the way of solving the problem of suppressing smoke more reality, and aluminum hydroxide ammonium molybdate compound, 5 ~ 10, is added in the PVC smoke quantity can be reduced by 43%.
Microcapsule technology can prevent the migration of flame retardant, improve the flame retardant effect and improve the thermal stability, change many advantages, such as dosage forms of components between the composite and efficiency, as well as making multifunctional flame retardant material is also very good. At present, China is exploring, such as hunan plastics research institute has developed microencapsulated red phosphorus, successful application in PE, PP, PS, ABS resin, the flame retardant effect is good. The microencapsulated phosphodibromophenyl phosphate and the microencapsulated chloroprene 70 were developed by anhui chemical research institute, which also achieved good results.
Flame retardant properties of the crosslinked polymer is much better than the linear polymer, so when the thermoplastic processing to add a small amount of crosslinking agent, make the plastic part of the mesh structure, not only can improve the dispersivity of the flame retardant, has proved to be plastic burns produce carbon effect, improve the flame retardant performance, and can increase the products of the physical and mechanical properties, weather resistance, heat resistance, etc. If a small amount of quaternary ammonium salt is added to soft PVC, it will be heated to form crosslinked flame retardant materials; The high polymer can be crosslinked by radiation method, metal oxide and crosslinking agent.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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