News Details
Formaldehyde-phosphorus flame retardant
2017-9-22 11:46:08
Formaldehyde-phosphorus flame retardant
Formaldehyde-free phosphorus-containing flame retardant experiment according to the 1, 2, 2 flame retardant finishing technology studied the optimum process conditions (1, 2, 2 on the flame retardant finishing technological conditions are determined according to the results of the study), flame retardant finish fabric test results for: renew time 1 s, smoldering time 0 s, zonal fracture strength of 247.35 N, damaged length is 4 cm, feel for 3 (test sample zonal fracture strength of 310.62 N). The flame retardant fabric soaping (soap flakes Na2CO32g/L, 3 g/L, 60 + 2 ℃, 3 min), drying (lOO ℃, 3 min), washed after 50 times, fabric damaged length is 9 cm.
Relevant research shows that cellulose fibre to get excellent durable flame retardant, need to make at least 3% phosphorus content on the fabric, and fabric weight gain at least 20% to 30% after processing, otherwise difficult to obtain ideal flame retardant effect. In this experiment, the combined flame retardant effect, strength and feel of the hand were considered, and the amount of flame retardant was suitable for 300g/L, while the content of the fabric was 2.0% to 2.4% (according to the fabric weight).
Due to between the hydroxyl (cellulose, flame retardants molecules with hydroxyl) in response to the requirement of reaction temperature and catalyst is strict, so the fabric with formaldehyde-free phosphorus-containing flame retardants for generally when join the crosslinking agent for crosslinking reaction, between the flame retardants and fiber bridging function, improve the degree of crosslinking between the fibers and flame retardants. In this experiment, butane tetracarboxylic acid was used as crosslinking agent, and the feeling, whiteness and mechanical strength of the fabric were completely in line with the finishing requirements, and its dosage had a great influence on the flame retardant effect. In the process of flame retardant finishing, butane tetracarboxylic acid can not only react with the flame retardant of formaldehyde, but also can react with fiber and play a bridge role.
The polycarboxylic acid first dehydrates in the baking process to form one or two molecules of annular acid anhydride, then the cyclic anhydride is formed in the catalysis of weakly alkaline material with the cellulose hydroxyl formation ester crosslinking. In the process of finishing, crosslinking agent condensation reticulate structure itself, can also be used with macromolecular crosslinking hydroxyl groups in cellulose, as well as with flame retardant condensation to form a stable chemical bonds combined fixation on fiber, increasing the molecular weight, improve the washing resistance.
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%.
In order to make the flame retardant and crosslinking agent in the baking process quickly and the cellulose macromolecular reaction crosslinking, in the flame retardant formula to add the right amount of catalyst. When baking at high temperature, it ACTS as a catalyst.
The purpose of baking is to accelerate the reaction of flame retardants, crosslinking agents and cellulose macromolecules to produce stable covalent bonds. Flame retardant finishing if not baked, washed 1 times, the flame retardant effect will be lost. Temperature and time of baking depend on the nature of flame retardant and crosslinking agent and the type of catalyst. Improving the baking temperature can improve the washing resistance of fabric flame retardant, and the speed of crosslinking reaction is also obvious.
However the fracture strength of high temperature flame retardant fabric will drop dramatically, color change increase and feel stiff, because under the high temperature, various possible reactions are accelerated, including not reaction of acid consumption on the degradation of cellulose molecules, at the same time due to high temperature flame retardant with the evaporation of water migration phenomenon obviously increased, causing surface crosslinking increased, bring the fabric handle roughness, therefore, on the premise of meet the fixation rate, should try to reduce the baking temperature, baking time.
The research on flame retardant fiber in China mainly focuses on the flame retardants of the organic system such as halogen and phosphine. The effective elements of flame retardants include phosphorus, nitrogen, antimony, bromine, chlorine, sulfur, etc. The flame retardant efficiency of phosphorus-containing flame retardant and the compatibility with organic synthetic materials in flame retardant field is accepted, but the phosphorus-containing flame retardant material in the release of the burning hydrogen halide with flame retardant effect is not only toxic and corrosive. As the demand for flame retardant fabrics continues to improve, flame retardants of flame retardant fiber will also change, and people not only demand flame retardant but also demand to be able to eliminate flame retardant and non-toxic.
Internationally, the material of flame retardant has been put forward higher requirements, which requires the non-halogenation, particularization and the development of inorganic flame retardant. Therefore, the flame retardant requirement of this project is: one is that the flame retardant is functional and can be used to flame retardant; Second, the fineness and dispersion of flame retardants; The third chemical is stable and non-toxic.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Formaldehyde-free phosphorus-containing flame retardant experiment according to the 1, 2, 2 flame retardant finishing technology studied the optimum process conditions (1, 2, 2 on the flame retardant finishing technological conditions are determined according to the results of the study), flame retardant finish fabric test results for: renew time 1 s, smoldering time 0 s, zonal fracture strength of 247.35 N, damaged length is 4 cm, feel for 3 (test sample zonal fracture strength of 310.62 N). The flame retardant fabric soaping (soap flakes Na2CO32g/L, 3 g/L, 60 + 2 ℃, 3 min), drying (lOO ℃, 3 min), washed after 50 times, fabric damaged length is 9 cm.
Relevant research shows that cellulose fibre to get excellent durable flame retardant, need to make at least 3% phosphorus content on the fabric, and fabric weight gain at least 20% to 30% after processing, otherwise difficult to obtain ideal flame retardant effect. In this experiment, the combined flame retardant effect, strength and feel of the hand were considered, and the amount of flame retardant was suitable for 300g/L, while the content of the fabric was 2.0% to 2.4% (according to the fabric weight).
Due to between the hydroxyl (cellulose, flame retardants molecules with hydroxyl) in response to the requirement of reaction temperature and catalyst is strict, so the fabric with formaldehyde-free phosphorus-containing flame retardants for generally when join the crosslinking agent for crosslinking reaction, between the flame retardants and fiber bridging function, improve the degree of crosslinking between the fibers and flame retardants. In this experiment, butane tetracarboxylic acid was used as crosslinking agent, and the feeling, whiteness and mechanical strength of the fabric were completely in line with the finishing requirements, and its dosage had a great influence on the flame retardant effect. In the process of flame retardant finishing, butane tetracarboxylic acid can not only react with the flame retardant of formaldehyde, but also can react with fiber and play a bridge role.
The polycarboxylic acid first dehydrates in the baking process to form one or two molecules of annular acid anhydride, then the cyclic anhydride is formed in the catalysis of weakly alkaline material with the cellulose hydroxyl formation ester crosslinking. In the process of finishing, crosslinking agent condensation reticulate structure itself, can also be used with macromolecular crosslinking hydroxyl groups in cellulose, as well as with flame retardant condensation to form a stable chemical bonds combined fixation on fiber, increasing the molecular weight, improve the washing resistance.
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%.
In order to make the flame retardant and crosslinking agent in the baking process quickly and the cellulose macromolecular reaction crosslinking, in the flame retardant formula to add the right amount of catalyst. When baking at high temperature, it ACTS as a catalyst.
The purpose of baking is to accelerate the reaction of flame retardants, crosslinking agents and cellulose macromolecules to produce stable covalent bonds. Flame retardant finishing if not baked, washed 1 times, the flame retardant effect will be lost. Temperature and time of baking depend on the nature of flame retardant and crosslinking agent and the type of catalyst. Improving the baking temperature can improve the washing resistance of fabric flame retardant, and the speed of crosslinking reaction is also obvious.
However the fracture strength of high temperature flame retardant fabric will drop dramatically, color change increase and feel stiff, because under the high temperature, various possible reactions are accelerated, including not reaction of acid consumption on the degradation of cellulose molecules, at the same time due to high temperature flame retardant with the evaporation of water migration phenomenon obviously increased, causing surface crosslinking increased, bring the fabric handle roughness, therefore, on the premise of meet the fixation rate, should try to reduce the baking temperature, baking time.
The research on flame retardant fiber in China mainly focuses on the flame retardants of the organic system such as halogen and phosphine. The effective elements of flame retardants include phosphorus, nitrogen, antimony, bromine, chlorine, sulfur, etc. The flame retardant efficiency of phosphorus-containing flame retardant and the compatibility with organic synthetic materials in flame retardant field is accepted, but the phosphorus-containing flame retardant material in the release of the burning hydrogen halide with flame retardant effect is not only toxic and corrosive. As the demand for flame retardant fabrics continues to improve, flame retardants of flame retardant fiber will also change, and people not only demand flame retardant but also demand to be able to eliminate flame retardant and non-toxic.
Internationally, the material of flame retardant has been put forward higher requirements, which requires the non-halogenation, particularization and the development of inorganic flame retardant. Therefore, the flame retardant requirement of this project is: one is that the flame retardant is functional and can be used to flame retardant; Second, the fineness and dispersion of flame retardants; The third chemical is stable and non-toxic.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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