News Details
Flame retardant for polyurethane insulation
2017-10-30 12:28:20
Flame retardant for polyurethane insulation
Bromine flame retardant is an advantage in the flame retardant of polyurethane. Although it is "controversial" on environmental protection, it has been difficult to replace the flame retardant system with other polyurethane.
Red phosphorus is a good flame retardant for non-halogen insulation polyurethane, which has the advantages of low additive, high flame retardant efficiency, low smoke, low toxicity and wide use.
Red phosphorus and aluminium hydroxide, expanded graphite and other inorganic flame retardants, compound phosphate / / aluminum, magnesium, phosphorus, graphite and other non halogen flame retardant, can use flame retardant dose reductions and thus improve the processing performance and physical and mechanical properties of the plastic products.
However, ordinary red phosphorus is easily oxidized and hygroscopic in air, which can cause dust explosion, difficulties in transportation, and poor solubility of macromolecular materials. Application scope is limited.
Finding the balance between fire protection and environmental protection is an important node for future development of flame retardant products. The importance of flame retardants in modern society cannot be ignored. However, with the introduction of a series of environmental policies in Europe, the development of the flame retardants has been restricted to varying degrees. How to protect persons and property from fire threat at the same time, also can make the flame retardant to minimize the potential risk to the human body and environment, is the domestic flame retardant production enterprises, research institutes and downstream electronics electrical, building materials, transportation and furniture and other common focus of the industry.
There are also four chlorophosphate flame retardants (TCEP, TCPP, TDCP and v-6) currently in the eu risk assessment, mainly for polyurethane foam. The eu risk assessment for TCEP has been completed and needs to be announced. The risk assessment for TCPP, TDCP and v-6 is still ongoing in the human health and environment segment.
Any chemical can have both advantages and disadvantages to the human body and environment. The key is how to manage and properly use it, especially for flame retardants. We should base our conclusions on risk assessment, and in a scientific manner, let the flame retardant play its due role in the protection of human life and property. The ministry of public security will take effect next year -- the flame retardant standard for flame retardant products in public places.
The flame retardant performance of public places and the requirements of the combustion performance of the components have raised higher requirements for the flame retardant performance of plastic products. The standard is in order to effectively control in case a fire occurs in a public places causing casualties and property losses, by the national fire standardization technical committee subcommittee fire materials under centralized management.
This standard has been clear about the public with the definition and classification of flame retardant products and components, combustion performance requirements and logo etc, provides for public use of building products, floor materials, wires and cables, sockets, switches, lamps and lanterns, plastic products such as home appliances shell, and used in the seat, sofa, mattress and foam thermal insulation layer of the combustion performance, put forward the corresponding requirement for flame retardant standard scale.
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP)
Appearance: Colorless Viscous Liquid
Melting Point: -64 ℃
Boiling Point: 315 ℃
Density: 1.512
Flash Point: 249 ℃
Refractive Index: N20 / D 1.503
Specific Gravity 1.490-1.510
Chlorine Content Of 49.5% ± 0.5
Color Value Max 100
Water Content 0.10% Max
Viscosity (25 ° C) 1500-1800 CPS
Acidity (Mg KOH / G 0.10 Max
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
Polyurethane insulation construction has a clear flame retardant composition during construction, thus ensuring safety problems in construction, reducing unnecessary troubles and affecting work quality.
Phosphorus-containing (especially bromide) flame retardant due to C - Br key of key is low, the scope of its decomposition temperature is commonly used polymer decomposition temperature range, therefore, when polymer decomposition, bromine flame retardants are beginning to break down, to achieve the effect of synchronous flame retardant; At the same time, this kind of flame retardant can be used with other compounds, such as antimony trioxide, to improve the flame retardant effect through synergistic effect.
Therefore, the application of bromine flame retardant is very wide. It can be used in flame retardant most plastic varieties and is one of the largest organic flame retardants in the world. The main disadvantage of bromine flame retardant is to reduce the anti-ultraviolet stability of the flame retardant substrate, which generates more smoke, corrosive gas and poisonous gases when burned, and its use is limited.
The new development of bromine flame retardant is to improve the content of bromine and increase the molecular weight. As PB 68, the main components are brominated polystyrene, with a molecular weight of 15,000 and bromine by 68%. Polypentabromophenol acrylate, which has a bromine amount of 70.5%, has a molecular weight of 30,000 ~ 80,000. These flame retardants suitable for all kinds of special engineering plastics, the migration, compatibility, thermal stability, flame retardancy, etc are much better than many small molecules flame retardant, has the potential to be the updated products in the future.
Silicon-copper polymers, either as additives or as copolymer, can improve the low temperature impact strength of organic plastics. Due to the inertia of silicone resin and stability, and low glass transition temperature (for - 54 ℃ ~ 87 ℃), so it even under high temperature or low temperature for a long time all can maintain its elasticity.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Bromine flame retardant is an advantage in the flame retardant of polyurethane. Although it is "controversial" on environmental protection, it has been difficult to replace the flame retardant system with other polyurethane.
Red phosphorus is a good flame retardant for non-halogen insulation polyurethane, which has the advantages of low additive, high flame retardant efficiency, low smoke, low toxicity and wide use.
Red phosphorus and aluminium hydroxide, expanded graphite and other inorganic flame retardants, compound phosphate / / aluminum, magnesium, phosphorus, graphite and other non halogen flame retardant, can use flame retardant dose reductions and thus improve the processing performance and physical and mechanical properties of the plastic products.
However, ordinary red phosphorus is easily oxidized and hygroscopic in air, which can cause dust explosion, difficulties in transportation, and poor solubility of macromolecular materials. Application scope is limited.
Finding the balance between fire protection and environmental protection is an important node for future development of flame retardant products. The importance of flame retardants in modern society cannot be ignored. However, with the introduction of a series of environmental policies in Europe, the development of the flame retardants has been restricted to varying degrees. How to protect persons and property from fire threat at the same time, also can make the flame retardant to minimize the potential risk to the human body and environment, is the domestic flame retardant production enterprises, research institutes and downstream electronics electrical, building materials, transportation and furniture and other common focus of the industry.
There are also four chlorophosphate flame retardants (TCEP, TCPP, TDCP and v-6) currently in the eu risk assessment, mainly for polyurethane foam. The eu risk assessment for TCEP has been completed and needs to be announced. The risk assessment for TCPP, TDCP and v-6 is still ongoing in the human health and environment segment.
Any chemical can have both advantages and disadvantages to the human body and environment. The key is how to manage and properly use it, especially for flame retardants. We should base our conclusions on risk assessment, and in a scientific manner, let the flame retardant play its due role in the protection of human life and property. The ministry of public security will take effect next year -- the flame retardant standard for flame retardant products in public places.
The flame retardant performance of public places and the requirements of the combustion performance of the components have raised higher requirements for the flame retardant performance of plastic products. The standard is in order to effectively control in case a fire occurs in a public places causing casualties and property losses, by the national fire standardization technical committee subcommittee fire materials under centralized management.
This standard has been clear about the public with the definition and classification of flame retardant products and components, combustion performance requirements and logo etc, provides for public use of building products, floor materials, wires and cables, sockets, switches, lamps and lanterns, plastic products such as home appliances shell, and used in the seat, sofa, mattress and foam thermal insulation layer of the combustion performance, put forward the corresponding requirement for flame retardant standard scale.
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP)
Appearance: Colorless Viscous Liquid
Melting Point: -64 ℃
Boiling Point: 315 ℃
Density: 1.512
Flash Point: 249 ℃
Refractive Index: N20 / D 1.503
Specific Gravity 1.490-1.510
Chlorine Content Of 49.5% ± 0.5
Color Value Max 100
Water Content 0.10% Max
Viscosity (25 ° C) 1500-1800 CPS
Acidity (Mg KOH / G 0.10 Max
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
Polyurethane insulation construction has a clear flame retardant composition during construction, thus ensuring safety problems in construction, reducing unnecessary troubles and affecting work quality.
Phosphorus-containing (especially bromide) flame retardant due to C - Br key of key is low, the scope of its decomposition temperature is commonly used polymer decomposition temperature range, therefore, when polymer decomposition, bromine flame retardants are beginning to break down, to achieve the effect of synchronous flame retardant; At the same time, this kind of flame retardant can be used with other compounds, such as antimony trioxide, to improve the flame retardant effect through synergistic effect.
Therefore, the application of bromine flame retardant is very wide. It can be used in flame retardant most plastic varieties and is one of the largest organic flame retardants in the world. The main disadvantage of bromine flame retardant is to reduce the anti-ultraviolet stability of the flame retardant substrate, which generates more smoke, corrosive gas and poisonous gases when burned, and its use is limited.
The new development of bromine flame retardant is to improve the content of bromine and increase the molecular weight. As PB 68, the main components are brominated polystyrene, with a molecular weight of 15,000 and bromine by 68%. Polypentabromophenol acrylate, which has a bromine amount of 70.5%, has a molecular weight of 30,000 ~ 80,000. These flame retardants suitable for all kinds of special engineering plastics, the migration, compatibility, thermal stability, flame retardancy, etc are much better than many small molecules flame retardant, has the potential to be the updated products in the future.
Silicon-copper polymers, either as additives or as copolymer, can improve the low temperature impact strength of organic plastics. Due to the inertia of silicone resin and stability, and low glass transition temperature (for - 54 ℃ ~ 87 ℃), so it even under high temperature or low temperature for a long time all can maintain its elasticity.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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