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Flame retardant and smoke suppressant of soft PVC material
2017-11-21 11:35:21
Flame retardant and smoke suppressant of soft PVC material
The single metal hydroxide soft PVC material has good smoke suppression effect, but the combination of the two directly or with molybdenum, metal oxide and metal is better.
For example, the combination of Al (OH) 3 and Mg (OH) 2 is an ideal soft PVC flame retardant and smoke suppressant for soft PVC material, and the combination of metal oxide and hydroxide is better. The combination of metal and metal hydroxide can further promote the solid phase char formation of PVC during combustion, which enhances the smoke suppression effect. For example, the complexes of Fe and Ni can improve the oxygen index of the system, while Ni and Cu have the best smoke elimination effect.
Red phosphorus and zinc borate can also with Al (OH) 3 and Mg (OH) 2 synergistic effect of flame retardant PVC material to further strengthen soft smoke suppressant effect, using zinc borate, antimony oxide and Al (OH) 3 flame retardant and synergistic effect can also be PVC cable material preparation of low smoke and low halogen.
Some metal oxides such as antimony, zinc, tin, magnesium, aluminum, silicon, iron and copper, such as three antimony oxide, two tin oxide, Zinc Oxide and copper oxide, are mostly used in combination.
The smoke suppression mechanism of Sb2O3 is that SbOCl and SbCl3 are generated together with PVC in PVC combustion, which can capture the free radicals and isolate the air, thus promoting the carbonization of PVC.
With SiO2 and SnO2 as synergist and synergistic agent of Sb2O3, it has goodflame retardant and smoke suppression effect. For example, the oxygen index in PVC increased by 5.5% compared with that without SiO2, the residual carbon rate increased by 4.1%, and the smoke density decreased by 16.4%.
The main varieties of metal salts are calcium carbonate, zinc borate, zinc stannate, zinc aluminate, etc..
The principle of CaC03 smoke suppression is that it can react with hydrogen halides in smoke to make stable CaCl2. Because the reaction is a heterogeneous reaction of solid gas, it can only be carried out on the surface of solid particles, so the particle size of CaC03 particles becomes a major factor inhibiting the smoke. Only tiny particles have a much larger specific surface. According to the principle of smoke suppression, polymers such as vinyl chloride, CSM and chloroprene rubber can be used as smoke suppressant when CaC03 is used to produce halogenated hydrogen.
Zinc stannate is a flame retardant with good thermal stability, no toxicity, no irritation to the respiratory system and skin, and the heat-resistant temperature can reach 600 degrees. It is possible to replace Sb2O3. The addition of 15 zinc stannate can reduce the smoke density of PVC from 663.4 to 215.5, which is 36.5% of that of Sb2O3 sample added with equal amount of zinc. Zinc stannate is an effective flame retardant for soft PVC because it plays a role in the condensed phase and gas phase in combustion, and mainly because it acts as Lewis acid in the condensed phase.
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP)
Product Name: Tris (1,3-Dichloro-2-Propyl) Phosphate; Tris (1,3-Dichloroisopropyl) Phosphate; Tris (1,3-Dichloroisopropyl) Phosphate; (1,3-Dichloro-2-Propyl) Phosphate; Tris (1,3-Dichloroisopropyl) Phosphate; Tris (1,3-Dichloroisopropyl) Tris (1,3-Dichloro-2-Propyl) Phosphate (TDCPP); TCPP Tris (2-Chloropropyl) Phosphate, Flame Retardant TDCPP
1,3-Dichloro-2-Propanolphosphate (3: 1); 1,3-Dichloro-2-Propanolophosphate (3: 1) 2-Propanol, 1,3-Dichloro, Phosphate (3: 1); 2-Propanol, 1,3-Dichloro-, Phosphate (3: 1) ); Crp (Fireproofingagent); Emulsion 212
CAS No.:13674-87-8
EINECS Number: 237-159-2
Molecular Formula: C9H15Cl6O4P
Molecular Weight: 430.9
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP) Use:
The Product Has A High Efficiency Flame Retardant, Low Volatility, High Thermal Stability, Water Resistance, Alkali Stable And Soluble In Most Organic Substances, Processing Performance, With Plastic, Moisture, Anti-Static, Anti-Pull, Anti-Compression Performance. Widely Used In Unsaturated Polyester, Polyurethane Foam, Epoxy Resin, Phenolic Resin, Rubber, Soft Polyvinyl Chloride, Synthetic Fibers And Other Plastics And Coatings At High Temperature Pyrolysis, Can Be Used As Emulsifier And Explosion-Proof Agent.
The smaller the particle size of flame retardant and smoke suppressant of soft PVC material, the better the effect of flame retardant and smoke suppression. Therefore, the development of nano soft PVC flame retardant and smoke suppressant has become a new research hotspot. Nano double hydroxide composite metal oxide (LDH) is a kind of composite metal oxide with layered structure. Adding 3-5 LDH in PVC can reduce the maximum smoke density of PVC by 30%-50%, and has no adverse effect on its mechanical properties. Smoke suppression was achieved by filling nano CaC03. The filling amount was only about 10%, which would produce ideal effect.
Organosilicon series. It is a new halogen free flame retardant, and also a kind of charring smoke suppressant. It can give high polymer flame retardant and smoke suppression, but also can improve the processing performance of materials and improve the mechanical strength of materials, especially the impact strength at low temperature. Silicone flame retardant silicone polymer is a kind of transparent, viscous, and a variety of synergist (stearic acid salt, phosphoric acid and pentaerythritol amine mixture, aluminum hydroxide) and use, has been used for flame retardant polyolefin, low dosage can meet the general requirements of flame retardant, high dosage can give excellent flame retardancy and smoke suppression of substrate.
Two ferrocene series. The main varieties are two ferrocene and some organic acids salts. In organic smoke suppressants, two ferrocene and some organic iron compounds are commonly used. They are most suitable to be used as smoke suppressants for PVC, adding 1.5 portions or a little more.
The flame retardant mechanism of ferrocene two is that PVC is removed after heating at 200-300 HC1. In this process, two ferrocene rapidly transforms into alpha -Fe2O3 and exists in the carbonized layer of PVC. Alpha -Fe2O3 can rapidly cause the burning of the carbonized layer, decompose the carbonized layer by catalytic oxidation, release CO and CO2, thus reducing the formation amount of graphite structure. FeCl2 and FeCl3 are intermediate products before the formation of alpha -Fe2O3, which can improve the cracking mechanism of PVC, make it easy to produce light tar, and reduce the formation of carbon black. In addition, two ferrocene is heated, will form a fine mist of volatile oxide; at high temperature, which is a strong oxidative substance, which is called "chemical hot"; it has changed the PVC pyrolysis mechanism and process of PVC, promote complete combustion, formation of CO and CO2, reduce the formation of carbon black the.
When phosphoric acid is heated, it is decomposed into phosphoric acid, and phosphoric acid is heated to form poly phosphoric acid, while poly phosphoric acid has strong dehydration, which can form a dense carbonized film on the surface of polymer.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
The single metal hydroxide soft PVC material has good smoke suppression effect, but the combination of the two directly or with molybdenum, metal oxide and metal is better.
For example, the combination of Al (OH) 3 and Mg (OH) 2 is an ideal soft PVC flame retardant and smoke suppressant for soft PVC material, and the combination of metal oxide and hydroxide is better. The combination of metal and metal hydroxide can further promote the solid phase char formation of PVC during combustion, which enhances the smoke suppression effect. For example, the complexes of Fe and Ni can improve the oxygen index of the system, while Ni and Cu have the best smoke elimination effect.
Red phosphorus and zinc borate can also with Al (OH) 3 and Mg (OH) 2 synergistic effect of flame retardant PVC material to further strengthen soft smoke suppressant effect, using zinc borate, antimony oxide and Al (OH) 3 flame retardant and synergistic effect can also be PVC cable material preparation of low smoke and low halogen.
Some metal oxides such as antimony, zinc, tin, magnesium, aluminum, silicon, iron and copper, such as three antimony oxide, two tin oxide, Zinc Oxide and copper oxide, are mostly used in combination.
The smoke suppression mechanism of Sb2O3 is that SbOCl and SbCl3 are generated together with PVC in PVC combustion, which can capture the free radicals and isolate the air, thus promoting the carbonization of PVC.
With SiO2 and SnO2 as synergist and synergistic agent of Sb2O3, it has goodflame retardant and smoke suppression effect. For example, the oxygen index in PVC increased by 5.5% compared with that without SiO2, the residual carbon rate increased by 4.1%, and the smoke density decreased by 16.4%.
The main varieties of metal salts are calcium carbonate, zinc borate, zinc stannate, zinc aluminate, etc..
The principle of CaC03 smoke suppression is that it can react with hydrogen halides in smoke to make stable CaCl2. Because the reaction is a heterogeneous reaction of solid gas, it can only be carried out on the surface of solid particles, so the particle size of CaC03 particles becomes a major factor inhibiting the smoke. Only tiny particles have a much larger specific surface. According to the principle of smoke suppression, polymers such as vinyl chloride, CSM and chloroprene rubber can be used as smoke suppressant when CaC03 is used to produce halogenated hydrogen.
Zinc stannate is a flame retardant with good thermal stability, no toxicity, no irritation to the respiratory system and skin, and the heat-resistant temperature can reach 600 degrees. It is possible to replace Sb2O3. The addition of 15 zinc stannate can reduce the smoke density of PVC from 663.4 to 215.5, which is 36.5% of that of Sb2O3 sample added with equal amount of zinc. Zinc stannate is an effective flame retardant for soft PVC because it plays a role in the condensed phase and gas phase in combustion, and mainly because it acts as Lewis acid in the condensed phase.
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP)
Product Name: Tris (1,3-Dichloro-2-Propyl) Phosphate; Tris (1,3-Dichloroisopropyl) Phosphate; Tris (1,3-Dichloroisopropyl) Phosphate; (1,3-Dichloro-2-Propyl) Phosphate; Tris (1,3-Dichloroisopropyl) Phosphate; Tris (1,3-Dichloroisopropyl) Tris (1,3-Dichloro-2-Propyl) Phosphate (TDCPP); TCPP Tris (2-Chloropropyl) Phosphate, Flame Retardant TDCPP
1,3-Dichloro-2-Propanolphosphate (3: 1); 1,3-Dichloro-2-Propanolophosphate (3: 1) 2-Propanol, 1,3-Dichloro, Phosphate (3: 1); 2-Propanol, 1,3-Dichloro-, Phosphate (3: 1) ); Crp (Fireproofingagent); Emulsion 212
CAS No.:13674-87-8
EINECS Number: 237-159-2
Molecular Formula: C9H15Cl6O4P
Molecular Weight: 430.9
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP) Use:
The Product Has A High Efficiency Flame Retardant, Low Volatility, High Thermal Stability, Water Resistance, Alkali Stable And Soluble In Most Organic Substances, Processing Performance, With Plastic, Moisture, Anti-Static, Anti-Pull, Anti-Compression Performance. Widely Used In Unsaturated Polyester, Polyurethane Foam, Epoxy Resin, Phenolic Resin, Rubber, Soft Polyvinyl Chloride, Synthetic Fibers And Other Plastics And Coatings At High Temperature Pyrolysis, Can Be Used As Emulsifier And Explosion-Proof Agent.
The smaller the particle size of flame retardant and smoke suppressant of soft PVC material, the better the effect of flame retardant and smoke suppression. Therefore, the development of nano soft PVC flame retardant and smoke suppressant has become a new research hotspot. Nano double hydroxide composite metal oxide (LDH) is a kind of composite metal oxide with layered structure. Adding 3-5 LDH in PVC can reduce the maximum smoke density of PVC by 30%-50%, and has no adverse effect on its mechanical properties. Smoke suppression was achieved by filling nano CaC03. The filling amount was only about 10%, which would produce ideal effect.
Organosilicon series. It is a new halogen free flame retardant, and also a kind of charring smoke suppressant. It can give high polymer flame retardant and smoke suppression, but also can improve the processing performance of materials and improve the mechanical strength of materials, especially the impact strength at low temperature. Silicone flame retardant silicone polymer is a kind of transparent, viscous, and a variety of synergist (stearic acid salt, phosphoric acid and pentaerythritol amine mixture, aluminum hydroxide) and use, has been used for flame retardant polyolefin, low dosage can meet the general requirements of flame retardant, high dosage can give excellent flame retardancy and smoke suppression of substrate.
Two ferrocene series. The main varieties are two ferrocene and some organic acids salts. In organic smoke suppressants, two ferrocene and some organic iron compounds are commonly used. They are most suitable to be used as smoke suppressants for PVC, adding 1.5 portions or a little more.
The flame retardant mechanism of ferrocene two is that PVC is removed after heating at 200-300 HC1. In this process, two ferrocene rapidly transforms into alpha -Fe2O3 and exists in the carbonized layer of PVC. Alpha -Fe2O3 can rapidly cause the burning of the carbonized layer, decompose the carbonized layer by catalytic oxidation, release CO and CO2, thus reducing the formation amount of graphite structure. FeCl2 and FeCl3 are intermediate products before the formation of alpha -Fe2O3, which can improve the cracking mechanism of PVC, make it easy to produce light tar, and reduce the formation of carbon black. In addition, two ferrocene is heated, will form a fine mist of volatile oxide; at high temperature, which is a strong oxidative substance, which is called "chemical hot"; it has changed the PVC pyrolysis mechanism and process of PVC, promote complete combustion, formation of CO and CO2, reduce the formation of carbon black the.
When phosphoric acid is heated, it is decomposed into phosphoric acid, and phosphoric acid is heated to form poly phosphoric acid, while poly phosphoric acid has strong dehydration, which can form a dense carbonized film on the surface of polymer.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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