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Halogen free flame retardant of epoxy resin
2017-11-21 11:35:32
Halogen free flame retardant of epoxy resin
Halogen containing polymers or flame retardant mixtures made with halogen containing flame retardants have excellent flame retardancy, and have been widely used as flame retardant materials. However, when the fire occurs, such halogen containing flame retardant material will produce a large number of smoke and toxic corrosive halogenated hydrogen gas, causing two times of harm.
The new flame retardant system has little smoke and no poisonous and corrosive gas when burning. The halogen free flame retardants of epoxy resins mainly consist of phosphorus compounds and metal hydroxides. Halogen free flame retardants of epoxy resins, which are non volatile and non corrosive gas when burning, are called non pollution flame retardants, and there are some kinds of halogen-free flame retardants, such as silicon series flame retardants and nitrogen series flame retardants. These new halogen free flame retardants have become new products conforming to international standards.
P is a new type of halogen-free flame retardant has attracted more and more attention: DOPO derivatives, polyphenol hydroxyl or amino derivatives can be used as a curing agent of polymer, and by the properties of brominated epoxy resin epoxy resin curing, they are very different, especially in the thermal stability of flame retardant, significant difference.
The research and development of the organic phosphorus compounds are from the chain structure to the ring structure of the rapid development of DOPO and its derivatives of these compounds phosphahenanthrene, due to its unique molecular structure (both biphenyl ring and phenanthrene ring structure), and showed its excellent properties have attracted much attention.
It can be said that the DOPO derivatives of environmentally friendly flame retardant applications are great body. DOPO derivative III has 2 phenolic hydroxyl groups and can also be used as curing agent for epoxy resin. Compared with the epoxy resin cured by TBBA, the cured epoxy resin with Tg derivative is generally 40 Td higher in temperature and higher in carbon content. There is no drop and black smoke during combustion, and it is very suitable for the substrate of circuit board.
In addition, the halogen free Flame Retardants Containing Phosphorus and nitrogen include intumescent halogen free flame retardants, which play a role mainly through the condensed phase. At low temperature, produced by acid source esterified polyol (carbon source) and can be used as a dehydrating agent for acid; at a slightly higher temperature, acid and polyol (Tan Yuan) esterification system in amine as a catalyst in the esterification reaction, accelerate the reaction system in melting; in the process of esterification or esterification; water produced during the reaction of steam and gas generated by non combustible gases has a molten state foaming system expansion, at the same time, polyol ester dehydration and carbonization, the formation of inorganic compounds and carbon residue, and the reaction system was further foaming; close to finish, and gelling system at the end of curing, the formation of porous carbon foam layer. Such as ammonium polyphosphate, melamine, expanded graphite, melamine phosphate, zinc borate, TGIC.
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP)
(A Small Cabinet Loaded With 16 Tons), 1000KG / IB Bucket (A Small Cabinet Installed 18 Tons) Or 23 Tons (1, 3-Dichloro-2-Propyl) Phosphate (TDCPP) Packing: Net Weight 200KG / ISOTANK.
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.
Aluminum hydroxide AL (OH) 3, which accounts for more than 40% of the total use of flame retardants. Aluminum hydroxide itself has three functions, such as flame retardant, smoke abatement and filling. Because of its non volatilization, non-toxic and synergistic flame retardant effect with many substances, it is known as pollution-free inorganic flame retardant.
But aluminum hydroxide has a large amount of added defects, usually need to add more than 50% in order to have a good flame retardant effect. In order to overcome this shortcoming, granulation technology can be used to develop in the direction of super refinement, which is the narrowing of particle size distribution; the improvement of encapsulation technology to improve the dispersion of polymer in polymer; and the method of macromolecular bonding treatment.
Magnesium hydroxide Mg (OH) 2 is a fast developing additive flame retardant. It is low smoke, non-toxic, and can neutralize acid and corrosive gases in combustion process. Therefore, it is an environmentally friendly green flame retardant. Its flame retardant mechanism is similar to that of AL (OH) 3. With AL (OH) 3, Mg (OH) 2 decomposition temperature than AL (OH) 3 100-150C, can be used for flame retardant finishing temperature is higher than that of 250C engineering plastics, and also promote charring effect, but to reach a certain amount of flame retardant effect, in more than 50%, has great influence on properties of materials. In order to reduce the addition of Mg (OH) 2 in polymer, one method is to make Mg (OH) 2 particles finer, and another method is to modify the surface of Mg (OH) 2 by coating technology to improve its compatibility with polymer.
Red phosphorus flame retardant is a kind of excellent performance, high efficiency, low toxicity and smoke suppression of fire retardant effect, but easy to absorb moisture, oxidation, and release of toxic gases, dust explosive, dark red, so the use of restricted. In order to solve the above drawbacks, the surface treatment of red phosphorus is the main research direction, the microencapsulation is the most effective method.
There are many types of Microencapsulated Red Phosphorus has been on the international market, China has conducted a lot of research, the general use of aluminum hydroxide, metal sulfate, synthetic resin as coating wall material, but not to the market.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Halogen containing polymers or flame retardant mixtures made with halogen containing flame retardants have excellent flame retardancy, and have been widely used as flame retardant materials. However, when the fire occurs, such halogen containing flame retardant material will produce a large number of smoke and toxic corrosive halogenated hydrogen gas, causing two times of harm.
The new flame retardant system has little smoke and no poisonous and corrosive gas when burning. The halogen free flame retardants of epoxy resins mainly consist of phosphorus compounds and metal hydroxides. Halogen free flame retardants of epoxy resins, which are non volatile and non corrosive gas when burning, are called non pollution flame retardants, and there are some kinds of halogen-free flame retardants, such as silicon series flame retardants and nitrogen series flame retardants. These new halogen free flame retardants have become new products conforming to international standards.
P is a new type of halogen-free flame retardant has attracted more and more attention: DOPO derivatives, polyphenol hydroxyl or amino derivatives can be used as a curing agent of polymer, and by the properties of brominated epoxy resin epoxy resin curing, they are very different, especially in the thermal stability of flame retardant, significant difference.
The research and development of the organic phosphorus compounds are from the chain structure to the ring structure of the rapid development of DOPO and its derivatives of these compounds phosphahenanthrene, due to its unique molecular structure (both biphenyl ring and phenanthrene ring structure), and showed its excellent properties have attracted much attention.
It can be said that the DOPO derivatives of environmentally friendly flame retardant applications are great body. DOPO derivative III has 2 phenolic hydroxyl groups and can also be used as curing agent for epoxy resin. Compared with the epoxy resin cured by TBBA, the cured epoxy resin with Tg derivative is generally 40 Td higher in temperature and higher in carbon content. There is no drop and black smoke during combustion, and it is very suitable for the substrate of circuit board.
In addition, the halogen free Flame Retardants Containing Phosphorus and nitrogen include intumescent halogen free flame retardants, which play a role mainly through the condensed phase. At low temperature, produced by acid source esterified polyol (carbon source) and can be used as a dehydrating agent for acid; at a slightly higher temperature, acid and polyol (Tan Yuan) esterification system in amine as a catalyst in the esterification reaction, accelerate the reaction system in melting; in the process of esterification or esterification; water produced during the reaction of steam and gas generated by non combustible gases has a molten state foaming system expansion, at the same time, polyol ester dehydration and carbonization, the formation of inorganic compounds and carbon residue, and the reaction system was further foaming; close to finish, and gelling system at the end of curing, the formation of porous carbon foam layer. Such as ammonium polyphosphate, melamine, expanded graphite, melamine phosphate, zinc borate, TGIC.
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP)
(A Small Cabinet Loaded With 16 Tons), 1000KG / IB Bucket (A Small Cabinet Installed 18 Tons) Or 23 Tons (1, 3-Dichloro-2-Propyl) Phosphate (TDCPP) Packing: Net Weight 200KG / ISOTANK.
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.
Aluminum hydroxide AL (OH) 3, which accounts for more than 40% of the total use of flame retardants. Aluminum hydroxide itself has three functions, such as flame retardant, smoke abatement and filling. Because of its non volatilization, non-toxic and synergistic flame retardant effect with many substances, it is known as pollution-free inorganic flame retardant.
But aluminum hydroxide has a large amount of added defects, usually need to add more than 50% in order to have a good flame retardant effect. In order to overcome this shortcoming, granulation technology can be used to develop in the direction of super refinement, which is the narrowing of particle size distribution; the improvement of encapsulation technology to improve the dispersion of polymer in polymer; and the method of macromolecular bonding treatment.
Magnesium hydroxide Mg (OH) 2 is a fast developing additive flame retardant. It is low smoke, non-toxic, and can neutralize acid and corrosive gases in combustion process. Therefore, it is an environmentally friendly green flame retardant. Its flame retardant mechanism is similar to that of AL (OH) 3. With AL (OH) 3, Mg (OH) 2 decomposition temperature than AL (OH) 3 100-150C, can be used for flame retardant finishing temperature is higher than that of 250C engineering plastics, and also promote charring effect, but to reach a certain amount of flame retardant effect, in more than 50%, has great influence on properties of materials. In order to reduce the addition of Mg (OH) 2 in polymer, one method is to make Mg (OH) 2 particles finer, and another method is to modify the surface of Mg (OH) 2 by coating technology to improve its compatibility with polymer.
Red phosphorus flame retardant is a kind of excellent performance, high efficiency, low toxicity and smoke suppression of fire retardant effect, but easy to absorb moisture, oxidation, and release of toxic gases, dust explosive, dark red, so the use of restricted. In order to solve the above drawbacks, the surface treatment of red phosphorus is the main research direction, the microencapsulation is the most effective method.
There are many types of Microencapsulated Red Phosphorus has been on the international market, China has conducted a lot of research, the general use of aluminum hydroxide, metal sulfate, synthetic resin as coating wall material, but not to the market.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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