News Details
High efficiency flame retardant for polyurethane products
2017-11-7 19:12:31
High efficiency flame retardant for polyurethane products
At present, to reach the high flame retardant grade of UL-94 V-0, it is often necessary to add 20% ~ 28% flame retardant in the material, and the domestic proportion is generally 26% ~ 30%. The high efficiency flame retardant of polyurethane product can reach UL-94 V-0 grade with the addition of 18% ~ 20%, which greatly reduces the production cost of flame retardant material.
The flame retardant grade of products can be improved obviously by adding high efficiency flame retardant of polyurethane products to the electrical products, packaging materials, environmental protection foaming materials, cable sheaths and coatings made of polyurethane.
It is known that halogen-free flame retardants mainly include intumescent flame retardants and inorganic flame retardants. Intumescent flame retardant is a kind of flame retardant with phosphorus and nitrogen as the main flame retardant elements.
When the polymer containing this kind of flame retardant is decomposed or burnt, the surface energy can generate a uniform porous carbon foam layer. The foam layer has the function of heat insulation and oxygen separation, and also has the function of smoke suppression and droplet prevention. High efficiency flame retardants of polyurethane products meet the requirements of smoke suppression and low toxicity. Nowadays, many countries attach great importance to the development of intumescent flame retardant products.
The intumescent flame retardant is flame retardant with phosphorus and nitrogen as the main component developed in recent years, with this kind of flame retardant when heated surface can form a layer of dense carbon foam layer to heat and oxygen, and smoke suppression and can prevent the droplet; has good flame retardant properties.
Since 1992, there has been a successful research report in China. Many research institutes have been engaged in the development of this field so far, but there is still no industrial scale production report. There has been no reason to scale production may have two: one is left in the product has not yet reflect the reaction of inorganic acid in flame retardant products surface moisture absorption phenomenon; the other one is the intumescent flame retardant is some macromolecular compounds; the last step is solid state reaction, its heat and mass transfer process is too complex and since industrialization is difficult. Finally, the inorganic flame retardants need to be explained is that people have always been three oxidation two antimony into this category, but strictly speaking, three antimony oxide two is not a flame retardant, it is only a synergistic agent with halogen flame retardants.
Aluminum hydroxide and magnesium hydroxide are the main force in inorganic flame retardants, especially when halogen free flame retardants are advocated in some fields, and they will become the first choice. Because of the need to add inorganic flame retardant in large quantity, will exceed the amount of the polymer itself in some special circumstances, it is bound to the physical and mechanical properties of polymers have a very big impact this requires to handle that particle, surface activation of inorganic flame retardant.
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 purpose of particulate matter is to disperse them uniformly in polymers and to act as flame retardants everywhere in the body. Experiments have proved that the amount of the particles can be reduced by the particle size of the same flame retardant standard. In addition, the surface activation is to make the compatibility between inorganic flame retardant and polymer better, which can reduce the mechanical strength of polymer itself due to the addition of a large number of inorganic flame retardants.
Recently, some papers have talked about the flame retardant superiority of inorganic nanoparticles. Our experience suggests that the addition of these nanoparticles may be beneficial for improving mechanical strength, but not for flame retardancy.
A study conducted by the materials and conversion research division of the University of Lille in France shows that halogen-free flame retardants can be used for efficient flame retardancy of oyster shell reinforced polypropylene (PP). The results show that the addition of phosphate based ExolitAP 760 to the high performance polypropylene composite can greatly improve the thermal stability of the composite.
Oyster shell is used as a special mineral filler to avoid adverse effects on the environment and high energy consumption during the standard mining process. In addition, the method can reduce waste landfill by recycling.
ExolitAP can effectively improve the environmental protection capacity of the composite: ExolitAP is not toxic and does not accumulate in the environment. Its biodegradability can degrade it into phosphate existing in nature. In addition, the additive content of this flame retardant is low and has little influence on the mechanical properties.
The achievement of this project is to demonstrate a significant breakthrough in the feasibility of using bio based materials in high end application areas (such as automobiles and buildings, construction, etc.) with high flame retardancy. In addition to oyster shell, we are also actively studying the flame retardant in such as linen and other plants as a filler of polymer flame retardant effect, in order to further explore more environmentally friendly materials to adapt to more stringent environmental requirements.
The liquid low volatile flame retardant has good water solubility and thermal stability, and is suitable for flame retardant of polyamine soft foam.
Solid state flame retardant is easy to precipitate when added to liquid raw material. It is usually added before foaming or foaming. The solid flame retardant will increase the viscosity of the material, reduce the activity of the product, and the addition of inorganic flame retardant filler has a certain negative impact on the foam properties. The finer the particles, the better the flame retardant performance and reduce the adverse effects on the foam properties.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
At present, to reach the high flame retardant grade of UL-94 V-0, it is often necessary to add 20% ~ 28% flame retardant in the material, and the domestic proportion is generally 26% ~ 30%. The high efficiency flame retardant of polyurethane product can reach UL-94 V-0 grade with the addition of 18% ~ 20%, which greatly reduces the production cost of flame retardant material.
The flame retardant grade of products can be improved obviously by adding high efficiency flame retardant of polyurethane products to the electrical products, packaging materials, environmental protection foaming materials, cable sheaths and coatings made of polyurethane.
It is known that halogen-free flame retardants mainly include intumescent flame retardants and inorganic flame retardants. Intumescent flame retardant is a kind of flame retardant with phosphorus and nitrogen as the main flame retardant elements.
When the polymer containing this kind of flame retardant is decomposed or burnt, the surface energy can generate a uniform porous carbon foam layer. The foam layer has the function of heat insulation and oxygen separation, and also has the function of smoke suppression and droplet prevention. High efficiency flame retardants of polyurethane products meet the requirements of smoke suppression and low toxicity. Nowadays, many countries attach great importance to the development of intumescent flame retardant products.
The intumescent flame retardant is flame retardant with phosphorus and nitrogen as the main component developed in recent years, with this kind of flame retardant when heated surface can form a layer of dense carbon foam layer to heat and oxygen, and smoke suppression and can prevent the droplet; has good flame retardant properties.
Since 1992, there has been a successful research report in China. Many research institutes have been engaged in the development of this field so far, but there is still no industrial scale production report. There has been no reason to scale production may have two: one is left in the product has not yet reflect the reaction of inorganic acid in flame retardant products surface moisture absorption phenomenon; the other one is the intumescent flame retardant is some macromolecular compounds; the last step is solid state reaction, its heat and mass transfer process is too complex and since industrialization is difficult. Finally, the inorganic flame retardants need to be explained is that people have always been three oxidation two antimony into this category, but strictly speaking, three antimony oxide two is not a flame retardant, it is only a synergistic agent with halogen flame retardants.
Aluminum hydroxide and magnesium hydroxide are the main force in inorganic flame retardants, especially when halogen free flame retardants are advocated in some fields, and they will become the first choice. Because of the need to add inorganic flame retardant in large quantity, will exceed the amount of the polymer itself in some special circumstances, it is bound to the physical and mechanical properties of polymers have a very big impact this requires to handle that particle, surface activation of inorganic flame retardant.
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 purpose of particulate matter is to disperse them uniformly in polymers and to act as flame retardants everywhere in the body. Experiments have proved that the amount of the particles can be reduced by the particle size of the same flame retardant standard. In addition, the surface activation is to make the compatibility between inorganic flame retardant and polymer better, which can reduce the mechanical strength of polymer itself due to the addition of a large number of inorganic flame retardants.
Recently, some papers have talked about the flame retardant superiority of inorganic nanoparticles. Our experience suggests that the addition of these nanoparticles may be beneficial for improving mechanical strength, but not for flame retardancy.
A study conducted by the materials and conversion research division of the University of Lille in France shows that halogen-free flame retardants can be used for efficient flame retardancy of oyster shell reinforced polypropylene (PP). The results show that the addition of phosphate based ExolitAP 760 to the high performance polypropylene composite can greatly improve the thermal stability of the composite.
Oyster shell is used as a special mineral filler to avoid adverse effects on the environment and high energy consumption during the standard mining process. In addition, the method can reduce waste landfill by recycling.
ExolitAP can effectively improve the environmental protection capacity of the composite: ExolitAP is not toxic and does not accumulate in the environment. Its biodegradability can degrade it into phosphate existing in nature. In addition, the additive content of this flame retardant is low and has little influence on the mechanical properties.
The achievement of this project is to demonstrate a significant breakthrough in the feasibility of using bio based materials in high end application areas (such as automobiles and buildings, construction, etc.) with high flame retardancy. In addition to oyster shell, we are also actively studying the flame retardant in such as linen and other plants as a filler of polymer flame retardant effect, in order to further explore more environmentally friendly materials to adapt to more stringent environmental requirements.
The liquid low volatile flame retardant has good water solubility and thermal stability, and is suitable for flame retardant of polyamine soft foam.
Solid state flame retardant is easy to precipitate when added to liquid raw material. It is usually added before foaming or foaming. The solid flame retardant will increase the viscosity of the material, reduce the activity of the product, and the addition of inorganic flame retardant filler has a certain negative impact on the foam properties. The finer the particles, the better the flame retardant performance and reduce the adverse effects on the foam properties.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Spanish
French
Italian
Portuguese
Japanese
Korean
Arabic
Russian