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Expansive graphite flame retardant
2017-9-22 11:46:17
Expansive graphite flame retardant
Expansive graphite (EG) is another type of inorganic flame retardant that has been widely used. With the advantages of rich resources, simple manufacturing, low price, non-toxic and low smoke, expanded graphite flame retardant is another hot spot in the research of expansive flame retardant. However, EG: the flame retardant effect is not good when used alone, and it is usually used in combination with other flame retardants to achieve better flame retardant effect. And ammonium polyphosphate is one of the most important flame retardants used.
The flame retardant of the expanded graphite flame retardant EG and ammonium polyphosphate in high-density polyethylene (PE-HD) is used in the field. The study found that the addition of ammonium polyphosphate/EG increased the thermal stability of PE- HD, the degradation process was slowed down and the residual carbon rate increased. The limit oxygen index is best when ammonium polyphosphate/EG is 2/1 or 1/3.
The addition of ammonium phosphate/EG can lead to the formation of a continuous dense carbon layer for PE- HD, which has less impact on the mechanical properties of materials than other expansive flame retardants. CAI xiaoxia et al studied the synergistic flame retardant EVA with ammonium phosphate/EG.
The results show that ammonium polyphosphate and EG to EVA has a good synergistic flame retardant effect, think in heated in different periods is the role of the principal causes of synergy, the early main is inflating the flame retardant mechanism of graphite flame retardants EG in the condensed phase, middle mainly play a role of flame retardant ammonium polyphosphate in the condensed phase and part of the gas flame retardant effect. Wei will natural graphite, such as homemade EG with expansion type flame retardant for PP flame retardant, found in adding quantity of 2, EG and the coordination of expansion type flame retardant efficiency is highest, and than natural graphite with high efficiency.
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%.
Li et al. And MoSi2 are used for the modification of ammonium phosphate/PER/MEL flame retardant coatings. The results showed that the refractory time of the coating after EG and MoSi2 was prolonged obviously, and the residual carbon was obviously increased. Flame-retardant performance is best when you add 9%MoSi2 and 5% EG. Adding EG and MoSi2 improved the antioxidant properties of the coating, mainly because the ceramic protective coating generated by MoSi2 was covered by the surface of the porous residual carbon.
The synergistic flame-retardant effect of EG, polyphosphate and expansive flame retardant on PE was studied. The results show that EG and expansion type flame retardant agent has better synergistic flame retardant efficiency, EG/ammonium polyphosphate can only slightly delay the degradation of PE, and EG/expansion type flame retardant agent to form a more solid carbon layer, lead to weight loss rate significantly decreased, the collaborative efficiency is higher.
Ke to use nanometer SiO2 ammonium polyphosphate/double season such as e four/melamine (ammonium polyphosphate/DPER/MEL) processing acrylic coatings, by limiting oxygen index, TGA, DTA and scanning electronic microscope (SEM) and XPS studies have found that good dispersed nanoparticles in acrylic acid compounds, can improve the heat generated carbon layer structure, improve its oxidation resistance. The nano SiO2 and nano TiO2, sharing evenly dispersed and forming interpenetrating network structure of nanometer oxide can greatly improve the anti wet and heat performance of coating, and coating after damp heat test, still can retain excellent flame retardant properties and mechanical properties.
Levchik, moreover, will have a layered structure of silicon aluminate mica with ammonium polyphosphate flame retardant used in polyamide 6 (PA6), found that the addition of mica can make the ammonium polyphosphate flame retardant PA6 limit oxygen index rise obviously, through level UL94V0. At the same time, when the heat exceeds 350e, ammonium polyphosphate will react with mica to produce volatile phosphoric acid, while increasing the content and stability of the solid residues.
Chen et al., the hydroxyl silicone oil (HSO) as intumescent flame retardant system of the association of flame retardant for PP, by TGA, cone calorimeter, XPS study found that PP/ammonium polyphosphate/PER/HSO and PP/ammonium polyphosphate/MEL/PER/HSO with smaller amount of heat release rate and total heat release, CO and CO2 generation also significantly reduced, HSO can promote the expansion of the homogeneous solid carbon layer formed when combustion, has obvious synergy.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
The flame retardant of the expanded graphite flame retardant EG and ammonium polyphosphate in high-density polyethylene (PE-HD) is used in the field. The study found that the addition of ammonium polyphosphate/EG increased the thermal stability of PE- HD, the degradation process was slowed down and the residual carbon rate increased. The limit oxygen index is best when ammonium polyphosphate/EG is 2/1 or 1/3.
The addition of ammonium phosphate/EG can lead to the formation of a continuous dense carbon layer for PE- HD, which has less impact on the mechanical properties of materials than other expansive flame retardants. CAI xiaoxia et al studied the synergistic flame retardant EVA with ammonium phosphate/EG.
The results show that ammonium polyphosphate and EG to EVA has a good synergistic flame retardant effect, think in heated in different periods is the role of the principal causes of synergy, the early main is inflating the flame retardant mechanism of graphite flame retardants EG in the condensed phase, middle mainly play a role of flame retardant ammonium polyphosphate in the condensed phase and part of the gas flame retardant effect. Wei will natural graphite, such as homemade EG with expansion type flame retardant for PP flame retardant, found in adding quantity of 2, EG and the coordination of expansion type flame retardant efficiency is highest, and than natural graphite with high efficiency.
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%.
Li et al. And MoSi2 are used for the modification of ammonium phosphate/PER/MEL flame retardant coatings. The results showed that the refractory time of the coating after EG and MoSi2 was prolonged obviously, and the residual carbon was obviously increased. Flame-retardant performance is best when you add 9%MoSi2 and 5% EG. Adding EG and MoSi2 improved the antioxidant properties of the coating, mainly because the ceramic protective coating generated by MoSi2 was covered by the surface of the porous residual carbon.
The synergistic flame-retardant effect of EG, polyphosphate and expansive flame retardant on PE was studied. The results show that EG and expansion type flame retardant agent has better synergistic flame retardant efficiency, EG/ammonium polyphosphate can only slightly delay the degradation of PE, and EG/expansion type flame retardant agent to form a more solid carbon layer, lead to weight loss rate significantly decreased, the collaborative efficiency is higher.
Ke to use nanometer SiO2 ammonium polyphosphate/double season such as e four/melamine (ammonium polyphosphate/DPER/MEL) processing acrylic coatings, by limiting oxygen index, TGA, DTA and scanning electronic microscope (SEM) and XPS studies have found that good dispersed nanoparticles in acrylic acid compounds, can improve the heat generated carbon layer structure, improve its oxidation resistance. The nano SiO2 and nano TiO2, sharing evenly dispersed and forming interpenetrating network structure of nanometer oxide can greatly improve the anti wet and heat performance of coating, and coating after damp heat test, still can retain excellent flame retardant properties and mechanical properties.
Levchik, moreover, will have a layered structure of silicon aluminate mica with ammonium polyphosphate flame retardant used in polyamide 6 (PA6), found that the addition of mica can make the ammonium polyphosphate flame retardant PA6 limit oxygen index rise obviously, through level UL94V0. At the same time, when the heat exceeds 350e, ammonium polyphosphate will react with mica to produce volatile phosphoric acid, while increasing the content and stability of the solid residues.
Chen et al., the hydroxyl silicone oil (HSO) as intumescent flame retardant system of the association of flame retardant for PP, by TGA, cone calorimeter, XPS study found that PP/ammonium polyphosphate/PER/HSO and PP/ammonium polyphosphate/MEL/PER/HSO with smaller amount of heat release rate and total heat release, CO and CO2 generation also significantly reduced, HSO can promote the expansion of the homogeneous solid carbon layer formed when combustion, has obvious synergy.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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