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Metal oxide flame retardant for PVC
2017-11-11 12:16:40
Metal oxide flame retardant for PVC
PVC flame retardant mechanism of metal oxide flame retardant synergistic effect is demonstrated by flame retardant and halogen element, and the mass fraction of 56% chlorinated PVC itself, so adding flame retardant PVC with metal oxide can show good flame retardant effect.
Cao Chuanxin et al. Studied the flame retardancy of some metal oxides in PVC by means of thermal analysis. Found that most metal oxides (except MgO, Al2O3, ZrO2 and Cr2O3) when used alone, the flame retardant effect of soft PVC to a certain extent, the flame retardant effect is better Sb2O3, SnO2 and MoO3, in addition 4 copies of the case, the oxygen index reached 29.5, 29.1 and 27.3 respectively. In addition, the amount of smoke generated by MoO3 and CuO formulations was significantly reduced.
According to the physical properties of these oxides can be seen, better flame retardant PVC with metal oxide flame retardants have a common characteristic, its melting point is generally low, such as Sb2O3, 656 C, 795 C MoO3. Transition metal oxides can also be used as flame retardants and smoke suppressants for PVC systems. Li Bin used cone calorimeter (flux 50kW? M-2) study contains a variety of transition metal oxides (Cu2O, CuO, Fe2O3, MoO3) of the PVC thermal stability, flame retardancy and smoke suppression.
Found the transition metal oxide can significantly reduce the heat release rate of materials (HRR), and its value is reduced and the transition metal oxide amount is proportional to the. In addition, Cu2O, CuO, Fe2O3 three can shorten the ignition time of polyvinyl chloride (TTI), by comparison, MoO3 will extend the ignition time instead of PVC, is that MoO3 has reduced the total heat release of polyvinyl chloride (THR) function, Cu2O, CuO, Fe2O3 three has little effect. The transition metal oxide can reduce the smoke rate during the combustion of PVC in terms of smoke suppression (SPR) and total smoke production (TSP), but Cu2O, CuO is more efficient than Fe2O3 and MoO3. At the same time, smoke suppression is proportional to the amount of transition metal oxide.
At present, many patents have reported the use of SSFR as a flame retardant, but the mechanism of action has not been introduced too much. Tian Chunming et al. Studied SSFR as a metal oxide flame retardant for pvc. When adding different proportions of SSFR, the oxygen index of the sample increased to varying degrees, without increasing SSFR, ranging from 0.5 to 5. The samples with 3 kinds of ZnO/MgO, ZnO/CaO and ZnO/CaO/MgO added oxygen index increased by 4.5 to 5, which was about 35, which was about SSFR. In addition, the oxygen index of the sample increased by 2.5, reaching 32.5, when ZnOSSFR was added alone. In comparison with the addition of MgO, CaO and CaO/MgOSSFR, the increase of oxygen index is not obvious.
It was also found that the presence of Sb2O3 could interact with various SSFR to promote the improvement of oxygen index. In addition, the effects of the same proportion of metal oxides on the flame retardancy of the system before and after processing into SSFR were compared. After being processed into SSFR, the metal oxide surface area increased a lot, the better dispersion in the system, the combustion reaction more fully, it has also been a flame retardancy than ordinary metal oxide better.
Tris(2-chloroisopropyl)Phosphate(TCPP)
The product is used for the soft / hard polyurethane foam, with thermal and hydrolytic stability good, especially suitable for ASTME84 (Level 11) foam, with low viscosity unsaturated polyester resin in low temperature application and phenolic plastics at. This product is also used to grab the foam sealant and sheet production. For polyvinyl chloride, polystyrene, phenolic resin, acrylic resin and rubber, coating, flame retardant, also used for soft and hard polyurethane foam, epoxy resin, polystyrene, cellulose acetate, ethyl cellulose tree and phenolic plastics, polyvinyl acetate and gun type foam sealant production. Particularly recommended for rigid polyurethane foam has excellent thermal and hydrolytic stability is particularly suitable for ASTM84 (II), compound for polyurethane foam and unsaturated resin and phenolic plastics.
Due to the transport process to avoid collision damage, Tris2-chloropropyl phosphate TCPP packaging methods generally used 250KG galvanized iron drum.
Below to introduce some of Tris2-chloropropyl phosphate TCPP packaging:
Net weight 250KG/ galvanized iron drum (a small cabinet pallet loaded 20 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).
Company 1.5 hour drive from Shanghai, the general sent to Shanghai port, the goods from customs inspection to the fastest one week after, the slowest ten days.
In view of the domestic and foreign demand is relatively small clients, also can use 50KG plastic bucket.
If you have special requirements on the Tris2-chloropropyl phosphate TCPP packaging, please contact us, try to meet the packaging requirements of customers.
By thermogravimetric analysis the degradation process of the sample, found that SSFR or ZnO can promote the early removal of polyvinyl chloride HCl, cross-linked into carbon, carbon layer formed a dense layer of honeycomb structure on the surface of a material, to prevent the transmission of heat and oxygen, improve the flame retardant and smoke suppression.
SnO2 and ZHS were considered as flame retardants and smoke suppressants containing halogen polymers. In the polymer, tin compounds exhibit superior performance in improving the charring rate. In addition, at high Cl/Sn ratio, the polymer releases a large amount of tin containing volatiles into the gas phase during combustion, which also acts as barrier to combustion.
Because of its high efficiency, it can replace part of Sb2O3. There are reports in the literature, in 100 copies, DOP35 copies, PVC stabilizer 2 under the system to add the ZHS5, can make the oxygen index to add ATH or MDH30 a level. H.M.Jayne et al proposed the use of 2 valent stannate or hydroxy stannate with Sb2O3 to plasticized pvc.
When the system contains such as chlorinated paraffin halogen containing plasticizer and like ATH, has a very strong synergistic effect of ZHS and Sb2O3; on the contrary, when the system only contains DOP, inorganic filler with CaCO3, ZHS and Sb2O3 has no synergistic effect. The synergistic effect of halogen containing plasticizer and ATH for the two plays an indispensable role in this synergistic effect, can make the amount of Sb2O3 decreased to below 1.5%, while the same flame retardant effect.
Sb2O3 is a widely used synergistic flame retardant, the flame retardant effect when used alone is poor (unless they are halogen containing flame retardant polymer, has been in) but with halogenated flame retardant and use, can greatly improve the efficiency of halogen flame retardant, flame retardant has therefore become a classic. Although Sb2O3 has good flame retardancy in halogen containing polymers (such as PVC), it makes the material lose transparency.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
PVC flame retardant mechanism of metal oxide flame retardant synergistic effect is demonstrated by flame retardant and halogen element, and the mass fraction of 56% chlorinated PVC itself, so adding flame retardant PVC with metal oxide can show good flame retardant effect.
Cao Chuanxin et al. Studied the flame retardancy of some metal oxides in PVC by means of thermal analysis. Found that most metal oxides (except MgO, Al2O3, ZrO2 and Cr2O3) when used alone, the flame retardant effect of soft PVC to a certain extent, the flame retardant effect is better Sb2O3, SnO2 and MoO3, in addition 4 copies of the case, the oxygen index reached 29.5, 29.1 and 27.3 respectively. In addition, the amount of smoke generated by MoO3 and CuO formulations was significantly reduced.
According to the physical properties of these oxides can be seen, better flame retardant PVC with metal oxide flame retardants have a common characteristic, its melting point is generally low, such as Sb2O3, 656 C, 795 C MoO3. Transition metal oxides can also be used as flame retardants and smoke suppressants for PVC systems. Li Bin used cone calorimeter (flux 50kW? M-2) study contains a variety of transition metal oxides (Cu2O, CuO, Fe2O3, MoO3) of the PVC thermal stability, flame retardancy and smoke suppression.
Found the transition metal oxide can significantly reduce the heat release rate of materials (HRR), and its value is reduced and the transition metal oxide amount is proportional to the. In addition, Cu2O, CuO, Fe2O3 three can shorten the ignition time of polyvinyl chloride (TTI), by comparison, MoO3 will extend the ignition time instead of PVC, is that MoO3 has reduced the total heat release of polyvinyl chloride (THR) function, Cu2O, CuO, Fe2O3 three has little effect. The transition metal oxide can reduce the smoke rate during the combustion of PVC in terms of smoke suppression (SPR) and total smoke production (TSP), but Cu2O, CuO is more efficient than Fe2O3 and MoO3. At the same time, smoke suppression is proportional to the amount of transition metal oxide.
At present, many patents have reported the use of SSFR as a flame retardant, but the mechanism of action has not been introduced too much. Tian Chunming et al. Studied SSFR as a metal oxide flame retardant for pvc. When adding different proportions of SSFR, the oxygen index of the sample increased to varying degrees, without increasing SSFR, ranging from 0.5 to 5. The samples with 3 kinds of ZnO/MgO, ZnO/CaO and ZnO/CaO/MgO added oxygen index increased by 4.5 to 5, which was about 35, which was about SSFR. In addition, the oxygen index of the sample increased by 2.5, reaching 32.5, when ZnOSSFR was added alone. In comparison with the addition of MgO, CaO and CaO/MgOSSFR, the increase of oxygen index is not obvious.
It was also found that the presence of Sb2O3 could interact with various SSFR to promote the improvement of oxygen index. In addition, the effects of the same proportion of metal oxides on the flame retardancy of the system before and after processing into SSFR were compared. After being processed into SSFR, the metal oxide surface area increased a lot, the better dispersion in the system, the combustion reaction more fully, it has also been a flame retardancy than ordinary metal oxide better.
Tris(2-chloroisopropyl)Phosphate(TCPP)
The product is used for the soft / hard polyurethane foam, with thermal and hydrolytic stability good, especially suitable for ASTME84 (Level 11) foam, with low viscosity unsaturated polyester resin in low temperature application and phenolic plastics at. This product is also used to grab the foam sealant and sheet production. For polyvinyl chloride, polystyrene, phenolic resin, acrylic resin and rubber, coating, flame retardant, also used for soft and hard polyurethane foam, epoxy resin, polystyrene, cellulose acetate, ethyl cellulose tree and phenolic plastics, polyvinyl acetate and gun type foam sealant production. Particularly recommended for rigid polyurethane foam has excellent thermal and hydrolytic stability is particularly suitable for ASTM84 (II), compound for polyurethane foam and unsaturated resin and phenolic plastics.
Due to the transport process to avoid collision damage, Tris2-chloropropyl phosphate TCPP packaging methods generally used 250KG galvanized iron drum.
Below to introduce some of Tris2-chloropropyl phosphate TCPP packaging:
Net weight 250KG/ galvanized iron drum (a small cabinet pallet loaded 20 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).
Company 1.5 hour drive from Shanghai, the general sent to Shanghai port, the goods from customs inspection to the fastest one week after, the slowest ten days.
In view of the domestic and foreign demand is relatively small clients, also can use 50KG plastic bucket.
If you have special requirements on the Tris2-chloropropyl phosphate TCPP packaging, please contact us, try to meet the packaging requirements of customers.
By thermogravimetric analysis the degradation process of the sample, found that SSFR or ZnO can promote the early removal of polyvinyl chloride HCl, cross-linked into carbon, carbon layer formed a dense layer of honeycomb structure on the surface of a material, to prevent the transmission of heat and oxygen, improve the flame retardant and smoke suppression.
SnO2 and ZHS were considered as flame retardants and smoke suppressants containing halogen polymers. In the polymer, tin compounds exhibit superior performance in improving the charring rate. In addition, at high Cl/Sn ratio, the polymer releases a large amount of tin containing volatiles into the gas phase during combustion, which also acts as barrier to combustion.
Because of its high efficiency, it can replace part of Sb2O3. There are reports in the literature, in 100 copies, DOP35 copies, PVC stabilizer 2 under the system to add the ZHS5, can make the oxygen index to add ATH or MDH30 a level. H.M.Jayne et al proposed the use of 2 valent stannate or hydroxy stannate with Sb2O3 to plasticized pvc.
When the system contains such as chlorinated paraffin halogen containing plasticizer and like ATH, has a very strong synergistic effect of ZHS and Sb2O3; on the contrary, when the system only contains DOP, inorganic filler with CaCO3, ZHS and Sb2O3 has no synergistic effect. The synergistic effect of halogen containing plasticizer and ATH for the two plays an indispensable role in this synergistic effect, can make the amount of Sb2O3 decreased to below 1.5%, while the same flame retardant effect.
Sb2O3 is a widely used synergistic flame retardant, the flame retardant effect when used alone is poor (unless they are halogen containing flame retardant polymer, has been in) but with halogenated flame retardant and use, can greatly improve the efficiency of halogen flame retardant, flame retardant has therefore become a classic. Although Sb2O3 has good flame retardancy in halogen containing polymers (such as PVC), it makes the material lose transparency.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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