Flame Retardant DOPO

Flame Retardant DOPO is an exquisite compound in flame retardants and is well-known in the field of modern chemical industry. Its properties are stable, excellent heat resistance, and halogen-free and environmentally friendly, making it a leader in modern flame retardant materials. In today's discussion of its application field, the summary is as follows. First, the electrical and electronic industry. In today's world, electrical circuits are becoming more and more complicated, and the element is hidden in the danger of current. If it encounters heat damage, it may be burned. The introduction of DOPO can significantly improve the flame retardancy of epoxy resins and insulating materials without damaging their dielectric and mechanical strength. It is commonly found in printed circuit boards, fire-resistant connectors, electronic packaging, etc. Second, transportation. Airplanes, rail trains, and automobiles are in great need of lightweight and flame-resistant materials.Flame Retardant DOPO is widely applied to polyester, polycarbonate, polyurethane foam and other polymer materials, so that its structural parts, interiors, seats, etc. have good flame retardant properties. And its low smoke, low toxicity, fire safety, and more in line with many laws and regulations of aerospace and subway buses. Third, construction and decoration. Buildings are towering and densely populated, and fire prevention laws cannot be ignored. Flame Retardant DOPO are said to be applied to coatings, sealing materials, composite panels, etc., such as fireproof doors and windows, ceilings, floors and even thermal insulation systems, which can greatly improve the fire protection level of buildings, and the material color is not easy to turn yellow, increasing its beauty and practicality. Fourth, textile field. Modern household clothing and industrial fibers are easy to burn and damage in case of open flames. DOPO-modified fibers can achieve flame resistance and anti-melting effect. They are widely used in curtains, carpets, mattresses, work clothes, etc., to ensure the safety of the people. Fifth, new energy field. Lithium batteries are often dangerous due to thermal runaway. DOPO and its derivatives can be used as additives and mixed in the electrolyte to inhibit fire and flame, and improve the intrinsic safety of new energy devices. In short, Flame Retardant DOPO have penetrated into polymer materials, construction, transportation, electronics, textiles, and new energy industries due to their unique molecular structure and excellent flame retardant mechanism. This is a witness to the prosperity of materials science and a powerful tool to protect the safety of human settlements.

In today's theory of Flame Retardant DOPO, Flame Retardant DOPOis an important flame retardant. Due to its unique structure, it contains two components of phosphine and aromatic ring, so it can significantly improve the flame retardant performance of the material. Its functions are as follows: First, during pyrolysis, DOPO can release phosphine in the early stage of polymer decomposition. When phosphine encounters high temperature phosphoric acid, it binds to the carbon base and promotes the formation of a carbonized layer. This carbon layer is continuous, hinders the penetration of oxygen, and can also prevent the escape of flammable gases. The fire source is difficult to penetrate deeply, and the combustion is self-microscopic. Secondary reason is that the benzene ring in the DOPO structure is stable and therm The lake benzene ring resists cracking at high temperature and can cooperate with the main chain to inhibit the "explosion" effect. Phosphine participates in the gas phase to capture free radicals, intercept · OH, · H, etc., and interrupt the chain reaction. In this way, the flame propagates, how can it spread? In addition, DOPO is easy to combine with various types of resins and fibres to form covalent bonds or embed in the main chain to improve the compatibility of flame retardants with the base material. The flame retardant effect is long-lasting and not easy to lose. And its dosage is low, which has seen significant effect and does not damage the physical properties of the material. In the way of environmental protection, it does not produce toxic gases and is conducive to green development. In addition, when exposed to fire, DOPO promotes the formation of phosphonic acid or pyrophosphate, and the resulting product has a high melting point, which can be precipitated on the surface to form a protective shell, further curbing the transfer of heat and mass. The complex energy is synergistic with nitrogen sources and halogens to promote each other and double the flame retardant. The structure is modified by molecules to combine multifunctional groups to improve heat resistance and aging resistance, and to expand the flame retardant use. Overall, DOPO has great advantages due to its unique molecular framework, which fuses and promotes each other with polymers, and has a real-time gas and condensation dual-phase flame retardant mechanism. The flame retardant effect is more and more obvious, and the chemical and physical properties are both. The materials used are stable and reliable, and can be widely used in electronics, transportation, and construction. This is exactly what modern flame retardant technology advocates.

Flame Retardant DOPO, is one of the organic phosphorus retardant agents and is widely used in the field of polymer materials fire protection. This physical property is a white crystalline solid, soluble in a variety of organic solvents, such as acetone, ethanol and benzene, slightly soluble in water. In the chemical structure, phosphorus atoms and oxygen form a P = O bond, which has both alkyl and aromatic characteristics, so it is both stable and reactive. In terms of chemical properties, the combination of phosphorus and oxygen of DOPO gives it strong heat resistance, and it is not easy to decompose spontaneously at room temperature and pressure. However, chemical reactions such as cracking or addition can occur under high temperature, strong acid or strong alkali conditions. The active hydrogen atom and epoxy structure in its molecule give it the ability to copolymerize and graft with a variety of compounds. It often reacts chemically with epoxy resins, polyesters and other polymers with this property to enhance the flame retardant effect of materials. When heated at high temperature, DOPO can release phosphorus-containing free radicals and promote the formation of carbon layers, inhibit combustion chain reactions, and reduce flame propagation rates. The phosphorus-containing intermediates generated after the degradation of phosphorus chemical bonds react with free radicals in the combustion process and effectively inhibit flame expansion. In terms of stability, DOPO is extremely stable in general storage environments. Under dark, dry and sealed conditions, its properties are constant, and it is difficult to spontaneously ignite or explode, and there is no worry of violent decomposition. However, it is dangerous to react when mixed with strong oxidants. When storing, it is necessary to prevent the invasion of humid and high temperature environments, so as not to affect its quality. Its toxicity is low, and it is less harmful to the environment and human body. However, protective measures should still be taken when it comes into contact with the skin or inhales dust. In summary, Flame Retardant DOPO has high chemical stability and good reactivity, making it highly suitable as an additive for polymer flame retardant materials. It imparts new flame retardant energy to the material in the event of fire, and is also easy to store and manage safely under normal conditions, so it is widely used in modern flame retardant science.

Phosphorus-based flame retardant DOPO, which is used in industrial materials in this world, has excellent chemical properties, can effectively inhibit the spread of flames, and protect human lives. Due to its excellent management, phosphorus elements are used to produce highly reactive free radicals, which is not one of the essential elements in the flame. It is harmful to the burning of rare and rare elements. It is similar to the flame retardant and good in ancient times. Therefore, those who need it should not be ignored. However, the environment and health of DOPO cannot be ignored. DOPO and its derivatives, many of which have phosphorus compounds, are stable and stable, and then gather in the natural environment to decompose rapidly. If it does not burn or is not managed, there is a risk of leaving it in soil and water. It can be stored in plants, or cause imbalances in the system, and in the later stage, it contains a certain amount. And it is well known in the family. The skin of DOPO absorbs, inhales or consumes a certain amount, which may affect the liver function of human mammals, or even reproduction and fertility. It has a certain cytotoxicity to the cells of mammals when exposed to high doses. In general, the dosage is limited, and the acute toxicity of the treatment has not been exposed to daily exposure. However, it is necessary to be cautious to prevent micro-damage. The research and application of chemical products in the world requires careful assessment of their "whole life" environment and human health benefits. DOPO flame retardant is the safety of flame retardant products. If it is not used properly and the management is not legal, it will also be a problem. It is necessary to promote the development of more secure alternatives, and it is not necessary to deal with the way of recycling, so that the harm can be done before it occurs. If the user can understand the situation and follow the middle way, use it carefully, and be careful as the beginning, it can be both safe and safe forever.

Flame Retardant DOPO is a highly efficient phosphorus-based flame retardant and is widely used in polymer materials. Its real name is 9,10-dihydro-9-oxo-10-phosphophenanthrene-10-oxide, which is chemically stable and has a significant flame retardant mechanism, which can endow the product with excellent fire resistance. The dosage must be carefully weighed according to the nature of the material, the use and the desired flame retardant level. It should not affect the physical properties too much, and it should not be too little to prevent loss of its effectiveness. Generally, polymer materials, such as epoxy resins, polyurethane, and thermoplastics, require about five to twenty parts of DOPO per 100 parts by mass of the material, depending on various systems and national standard flame retardant requirements. If used in high-end applications such as electronic packaging and copper clad laminates, the dosage must be more actuarial to ensure balanced performance. The addition of DOPO to the material is often done in multiple ways. Or it is directly blended with the monomer before polymerization and uniformly dispersed in the high temperature reaction; or after polymerization, it is mixed by mechanical methods, such as in a double-roll open mill, extrusion or internal mixer, and the DOPO powder or solution is slowly input to make it evenly distributed in the matrix material. In some systems, DOPO is first dissolved by solvent method and then impregnated in the matrix, and then the solvent is heated and evaporated to achieve the effect of covering the flame retardant. If it is an epoxy resin system, DOPO can also be added together with a hardener or epoxy monomer to promote the reaction with a catalyst to form an interpenetrating network, taking into account flame retardant and mechanical properties. During the operation, it is recommended to keep the temperature moderate to prevent DOPO from volatilizing or decomposing, mix evenly, and avoid local enrichment. If you need to improve the compatibility with the matrix, you can also modify DOPO appropriately, or use compressors and additives to coordinate to achieve the best balance between flame retardant and material mechanical properties. Ultimately, the dosage and method must be finely adjusted according to actual needs, and do not engage in it. Burning plaster and dialing, in order to obtain efficient flame retardant materials, which not only ensure safety, but also full performance.