News Details
Epoxy resin flame retardant
2017-10-31 11:39:01
Epoxy resin flame retardant
Epoxy resin (EP) with high bonding strength, good stability, low shrinkage, high mechanical strength and good processability etc, have been widely used in various fields of national economy, such as coatings, adhesives, insulating materials, 1 engineering components and advanced composite materials 2. However, the thermal stability of epoxy resin is not high, and the oxygen index (LOI) is only 19.8%, which belongs to the relatively easy burning polymer material. This has a great impact on the extensive application of epoxy resin.
Epoxy resin (EP) is a kind of polymer prepolymer with two or more than two epoxy groups and aliphatic, alicyclic or aromatic chain segments as the main chain. It is a very important thermosetting resin.
Moreover, as a synthetic polymer material, epoxy resin can produce a large amount of heat and soot in hot cracking and combustion, which poses a great threat to people's life safety. Therefore, it is imperative to add epoxy resin flame retardant.
Epoxy resin combustion is a very complex physical and chemical processes, but before combustion, nothing more than to experience pyrolysis and combustion heat release and smoke three processes, but also need fuel, temperature and oxygen concentration of the three essential factors.
Epoxy resin is subjected to external heat sources of heat in the air, the substrate temperature increased gradually, the molecular chain segment motion increases; as the temperature continues to rise, the poor performance of the thermal stability of the weak bond in molecular chain began to break, and gradually lead to a series of radical decomposition reaction, and produce a series of combustible and residue small molecules such as CO, acetone, methane, phenolic compounds, flammable gas to solid surface diffusion; lots of flammable gas gathered on the surface of solid is mixed with air to form a combustion reaction of fuel, the fuel reaches a certain temperature after ignition and release the heat, one part of the heat to the polymer matrix of radiation. And that part of the heat is enough to meet the decomposition and ignition of epoxy resin, forming a good flame cycle process, so that the epoxy resin can continue to burn after the fire.
It is worth noting that the epoxy resin is a polymer of carbon, the combustion process will form a carbon layer with certain heat insulation effect on the surface, thus slowing the substrate heating rate, reduce the thermal decomposition rate, but the continued accumulation of heat will promote continuous combustion reaction of epoxy resin. In conclusion, the combustion process of epoxy resin can be summed up as four processes: matrix decomposition, ignition, combustion and flame propagation.
Based on the combustion process, as long as by reducing the transfer to the epoxy resin matrix thermal decomposition, thermal capture free radicals, inhibit the release of small molecule combustible, flame retardant concentration means of dilute combustible gases terminated epoxy resin of a link in the combustion process is the realization of epoxy resin.
Like other materials, the flame retardancy of epoxy resin flame retardant is also realized by flame retardant mechanism such as gas phase flame retardant, condensed phase flame retardant and interrupted heat exchange.
The combustion reaction chain growth ability of free radicals is a flame retardant function of gas phase flame retardant epoxy resin to promote the cure; delay or prevent the polymer thermal decomposition flame retardant effect of condensed phase flame in solid phase; the polymer combustion part of heat generated by the resulting interrupt interrupt is burning away the heat exchange mechanism of flame retardant. In fact, the combustion and flame retardant is a very complex process, involving many factors affecting the combustion and flame retardant, a flame retardant system is strictly divided into some kind of mechanism is very difficult, usually a lot of flame retardant system is based on several flame retardant mechanisms also play a role.
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 flame retardant mechanism of epoxy resin flame retardant refers to the flame retardant effect in the gas phase which makes the combustion interrupted or delayed the combustion reaction. The flame retardant in the following situations generally belongs to the gas phase flame retardant mechanism.
(1) flame retardant material heating or burning can produce free radical inhibitors, interrupt chain reaction so that the combustion of polymer, such as the widely used halogen antimony flame retardant synergistic flame retardant effect produced by the system is the mechanism;
(2) inert particles are formed when flame retardant materials are heated or burned, which promote the combination of free radicals to terminate combustion reactions;
(3) flame retardant material heating or burning the release of large amounts of inert gas or high density steam, the dilution of oxygen and gaseous fuel, and reduce the temperature of combustion of combustible gas, resulting in termination; the latter covers the combustible gas, it is isolated from the air, the burning of asphyxia.
Flame retardant mechanism of epoxy resin flame retardant condensed phase refers to retarding or terminating the flame retardant effect of flame retardant material in the condensed phase. The following conditions are condensed phase flame retardant.
(1) retarding or retarding the formation of combustible gas and thermal decomposition of free radicals in solid phase;
(2) inorganic fillers with high specific heat capacity in flame retardant materials can not easily reach the thermal decomposition temperature by thermal storage and heat conduction;
(3) the flame retardant is heated and decomposed so that the flame retardant material rises slowly or stops. Aluminum hydroxide and magnesium hydroxide, which are widely used in industry, belong to this kind of flame retardant;
(4) when flame retardant material is burning, it is difficult to burn, heat insulation, oxygen isolation, porous carbon layer on its surface, to prevent combustible gas into the combustion phase, resulting in combustion interruption. Intumescent flame retardant belongs to this kind of flame retardant mechanism.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Epoxy resin (EP) with high bonding strength, good stability, low shrinkage, high mechanical strength and good processability etc, have been widely used in various fields of national economy, such as coatings, adhesives, insulating materials, 1 engineering components and advanced composite materials 2. However, the thermal stability of epoxy resin is not high, and the oxygen index (LOI) is only 19.8%, which belongs to the relatively easy burning polymer material. This has a great impact on the extensive application of epoxy resin.
Epoxy resin (EP) is a kind of polymer prepolymer with two or more than two epoxy groups and aliphatic, alicyclic or aromatic chain segments as the main chain. It is a very important thermosetting resin.
Moreover, as a synthetic polymer material, epoxy resin can produce a large amount of heat and soot in hot cracking and combustion, which poses a great threat to people's life safety. Therefore, it is imperative to add epoxy resin flame retardant.
Epoxy resin combustion is a very complex physical and chemical processes, but before combustion, nothing more than to experience pyrolysis and combustion heat release and smoke three processes, but also need fuel, temperature and oxygen concentration of the three essential factors.
Epoxy resin is subjected to external heat sources of heat in the air, the substrate temperature increased gradually, the molecular chain segment motion increases; as the temperature continues to rise, the poor performance of the thermal stability of the weak bond in molecular chain began to break, and gradually lead to a series of radical decomposition reaction, and produce a series of combustible and residue small molecules such as CO, acetone, methane, phenolic compounds, flammable gas to solid surface diffusion; lots of flammable gas gathered on the surface of solid is mixed with air to form a combustion reaction of fuel, the fuel reaches a certain temperature after ignition and release the heat, one part of the heat to the polymer matrix of radiation. And that part of the heat is enough to meet the decomposition and ignition of epoxy resin, forming a good flame cycle process, so that the epoxy resin can continue to burn after the fire.
It is worth noting that the epoxy resin is a polymer of carbon, the combustion process will form a carbon layer with certain heat insulation effect on the surface, thus slowing the substrate heating rate, reduce the thermal decomposition rate, but the continued accumulation of heat will promote continuous combustion reaction of epoxy resin. In conclusion, the combustion process of epoxy resin can be summed up as four processes: matrix decomposition, ignition, combustion and flame propagation.
Based on the combustion process, as long as by reducing the transfer to the epoxy resin matrix thermal decomposition, thermal capture free radicals, inhibit the release of small molecule combustible, flame retardant concentration means of dilute combustible gases terminated epoxy resin of a link in the combustion process is the realization of epoxy resin.
Like other materials, the flame retardancy of epoxy resin flame retardant is also realized by flame retardant mechanism such as gas phase flame retardant, condensed phase flame retardant and interrupted heat exchange.
The combustion reaction chain growth ability of free radicals is a flame retardant function of gas phase flame retardant epoxy resin to promote the cure; delay or prevent the polymer thermal decomposition flame retardant effect of condensed phase flame in solid phase; the polymer combustion part of heat generated by the resulting interrupt interrupt is burning away the heat exchange mechanism of flame retardant. In fact, the combustion and flame retardant is a very complex process, involving many factors affecting the combustion and flame retardant, a flame retardant system is strictly divided into some kind of mechanism is very difficult, usually a lot of flame retardant system is based on several flame retardant mechanisms also play a role.
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 flame retardant mechanism of epoxy resin flame retardant refers to the flame retardant effect in the gas phase which makes the combustion interrupted or delayed the combustion reaction. The flame retardant in the following situations generally belongs to the gas phase flame retardant mechanism.
(1) flame retardant material heating or burning can produce free radical inhibitors, interrupt chain reaction so that the combustion of polymer, such as the widely used halogen antimony flame retardant synergistic flame retardant effect produced by the system is the mechanism;
(2) inert particles are formed when flame retardant materials are heated or burned, which promote the combination of free radicals to terminate combustion reactions;
(3) flame retardant material heating or burning the release of large amounts of inert gas or high density steam, the dilution of oxygen and gaseous fuel, and reduce the temperature of combustion of combustible gas, resulting in termination; the latter covers the combustible gas, it is isolated from the air, the burning of asphyxia.
Flame retardant mechanism of epoxy resin flame retardant condensed phase refers to retarding or terminating the flame retardant effect of flame retardant material in the condensed phase. The following conditions are condensed phase flame retardant.
(1) retarding or retarding the formation of combustible gas and thermal decomposition of free radicals in solid phase;
(2) inorganic fillers with high specific heat capacity in flame retardant materials can not easily reach the thermal decomposition temperature by thermal storage and heat conduction;
(3) the flame retardant is heated and decomposed so that the flame retardant material rises slowly or stops. Aluminum hydroxide and magnesium hydroxide, which are widely used in industry, belong to this kind of flame retardant;
(4) when flame retardant material is burning, it is difficult to burn, heat insulation, oxygen isolation, porous carbon layer on its surface, to prevent combustible gas into the combustion phase, resulting in combustion interruption. Intumescent flame retardant belongs to this kind of flame retardant mechanism.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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