News Details
Mixed synergistic flame retardant
2017-9-6 17:22:32
Mixed synergistic flame retardant
ATH/MDH blends synergistic flame retardants to make them synergistic with each other, to make up for short supply, to reduce the dosage of flame retardants, to improve the performance of flame retardant properties, processing performance and mechanical properties. Hybrid synergistic flame retardant with both can make up for ATH due to lower decomposition temperature led to the decrease of the flame retardant properties of defects, and can make composite flame retardant in material has been in the process of oxidation decomposition has good flame retardant effect. It is reported that the MDH of low addition (< 30%) has a catalytic effect on ATH flame retardation, especially the carbonization effect of the material.
ZnCO3 / MgCO3 mixed synergistic flame retardant. B.I.D.D, avis et al. Proposed a formula to add the appropriate inorganic filler (ZnCO3, MgCO3 mixture) to the high oxygen index [19] when the plasticizer was plasticized with triaryl phosphate flame retardant plasticizer. When three aryl phosphate ester flame retardant plasticizer and Zn2CO3 / MgCO3 mixture when used together, which can make up for the defect of the former on the thermal stability, so that when the plasticizing of PVC with good flame retardancy and smoke suppression.
ZnCO3 / MgCO3 mixture was used in 10 parts in the system after replacing some traditional plasticizers (phthalate DIDP) with triaryl phosphate. When the light weight MgCO3 / ZnCO3 was adopted, the oxygen index reached 33.4. And the oxygen index was slightly lower, 31.3, with the heavy Mg2CO3 / ZnCO3. But both values were greater than the addition of another commercial flame retardant, Ongard2. In the aspect of tobacco suppression, the amount of PVC in the ZnCO3 / MgCO3 mixture was significantly less than that of Zn2CO3 or MgCO3.
By experiment in recent years, China's chemical industry experts developed a way to strengthen PVC flame retardant performance, this is the flexible PVC before joining calcium aluminate, this method is simple, convenient to enhance the flame retardant properties of PVC effect is very obvious.
Tris (2-Chloroethyl) Phosphate 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%.
Calcium aluminate is a common inorganic salt, and its molecular formula is 3CaO. Al2O3? 6H2O, because there is a large amount of crystalline water in the molecule, the crystal water will be released once the heat reaches a certain temperature. Temperature is between 253 ~ 318 ℃, the water of crystallization can be released by 61.3%; The temperature rise to 341 ~ 472 ℃, and can release 23.2%; The temperature as high as 538 ~ 995 ℃, the remaining 15.5% will be released in full. Therefore, when the PVC is mixed with calcium aluminate, the heat will be absorbed by the release of the crystal water, thus reducing the ignition temperature and delaying the burning time of the PVC.
In addition, when the wires catch fire, because of the addition of calcium aluminate in PVC, the HCl and 3CaO are also released. Al2O3? The Ca in 6H2O reacts and produces calcium chloride (CaCl2), thereby reducing the emission of toxic HCl. At the same time, it will change the way of thermal decomposition of PVC, so that the product of PVC in high temperature thermal decomposition becomes coals, thus reducing the generation of combustible gas.
There are two types of silicates used for flame retardant soft PVC: one is spray dry silicate (IPS), and one is the expansion of silicate (IPG) [1]. The maximum heat release rate (PRHR) and total release heat (THR) of the system can be significantly reduced when the PVC/IPS (50/50) system is adopted (the plasticizer content is 27%).
At the same time, people also compares the interpublic and phosphate P30 (degree of polymerization of 1500 ~ 1500 of poly phosphoric acid amine) and zinc borate (ZB) flame retardant effect of PVC plasticizer content (by 19%), in both PRHR THR, interpublic are far superior to the effect of P30 and ZB, PVC/interpublic (50/50) of THR about PVC/P30 (50/50) or 50/50 of the PVC/ZB (50/50), PRHR is about one third. In order to make the flame retardant PVC good flame retardant, the amount of IPS needs to be about 50%.
Sb2O5 has the flame retardancy and does not affect the transparency of the material, but it can not and frequently used metal soap stabilizer used together, so, how to become a problem in Sb2O5 use foster strengths and circumvent weaknesses. Using Sb2O3 adhesive coating Sb2O5 can effectively solve this problem. When Sb2O3 adhesive coated Sb2O5, the latter would not react with the metal soap stabilizer, and the thermal stability of the material was not affected. Sb2O3 and Sb2O5 can synergistically work with chlorine in PVC and enhance the flame retardancy of PVC.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
ATH/MDH blends synergistic flame retardants to make them synergistic with each other, to make up for short supply, to reduce the dosage of flame retardants, to improve the performance of flame retardant properties, processing performance and mechanical properties. Hybrid synergistic flame retardant with both can make up for ATH due to lower decomposition temperature led to the decrease of the flame retardant properties of defects, and can make composite flame retardant in material has been in the process of oxidation decomposition has good flame retardant effect. It is reported that the MDH of low addition (< 30%) has a catalytic effect on ATH flame retardation, especially the carbonization effect of the material.
ZnCO3 / MgCO3 mixed synergistic flame retardant. B.I.D.D, avis et al. Proposed a formula to add the appropriate inorganic filler (ZnCO3, MgCO3 mixture) to the high oxygen index [19] when the plasticizer was plasticized with triaryl phosphate flame retardant plasticizer. When three aryl phosphate ester flame retardant plasticizer and Zn2CO3 / MgCO3 mixture when used together, which can make up for the defect of the former on the thermal stability, so that when the plasticizing of PVC with good flame retardancy and smoke suppression.
ZnCO3 / MgCO3 mixture was used in 10 parts in the system after replacing some traditional plasticizers (phthalate DIDP) with triaryl phosphate. When the light weight MgCO3 / ZnCO3 was adopted, the oxygen index reached 33.4. And the oxygen index was slightly lower, 31.3, with the heavy Mg2CO3 / ZnCO3. But both values were greater than the addition of another commercial flame retardant, Ongard2. In the aspect of tobacco suppression, the amount of PVC in the ZnCO3 / MgCO3 mixture was significantly less than that of Zn2CO3 or MgCO3.
By experiment in recent years, China's chemical industry experts developed a way to strengthen PVC flame retardant performance, this is the flexible PVC before joining calcium aluminate, this method is simple, convenient to enhance the flame retardant properties of PVC effect is very obvious.
Tris (2-Chloroethyl) Phosphate 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%.
Calcium aluminate is a common inorganic salt, and its molecular formula is 3CaO. Al2O3? 6H2O, because there is a large amount of crystalline water in the molecule, the crystal water will be released once the heat reaches a certain temperature. Temperature is between 253 ~ 318 ℃, the water of crystallization can be released by 61.3%; The temperature rise to 341 ~ 472 ℃, and can release 23.2%; The temperature as high as 538 ~ 995 ℃, the remaining 15.5% will be released in full. Therefore, when the PVC is mixed with calcium aluminate, the heat will be absorbed by the release of the crystal water, thus reducing the ignition temperature and delaying the burning time of the PVC.
In addition, when the wires catch fire, because of the addition of calcium aluminate in PVC, the HCl and 3CaO are also released. Al2O3? The Ca in 6H2O reacts and produces calcium chloride (CaCl2), thereby reducing the emission of toxic HCl. At the same time, it will change the way of thermal decomposition of PVC, so that the product of PVC in high temperature thermal decomposition becomes coals, thus reducing the generation of combustible gas.
There are two types of silicates used for flame retardant soft PVC: one is spray dry silicate (IPS), and one is the expansion of silicate (IPG) [1]. The maximum heat release rate (PRHR) and total release heat (THR) of the system can be significantly reduced when the PVC/IPS (50/50) system is adopted (the plasticizer content is 27%).
At the same time, people also compares the interpublic and phosphate P30 (degree of polymerization of 1500 ~ 1500 of poly phosphoric acid amine) and zinc borate (ZB) flame retardant effect of PVC plasticizer content (by 19%), in both PRHR THR, interpublic are far superior to the effect of P30 and ZB, PVC/interpublic (50/50) of THR about PVC/P30 (50/50) or 50/50 of the PVC/ZB (50/50), PRHR is about one third. In order to make the flame retardant PVC good flame retardant, the amount of IPS needs to be about 50%.
Sb2O5 has the flame retardancy and does not affect the transparency of the material, but it can not and frequently used metal soap stabilizer used together, so, how to become a problem in Sb2O5 use foster strengths and circumvent weaknesses. Using Sb2O3 adhesive coating Sb2O5 can effectively solve this problem. When Sb2O3 adhesive coated Sb2O5, the latter would not react with the metal soap stabilizer, and the thermal stability of the material was not affected. Sb2O3 and Sb2O5 can synergistically work with chlorine in PVC and enhance the flame retardancy of PVC.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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