News Details
Inorganic hydroxide flame retardant
2017-10-3 15:15:54
Inorganic hydroxide flame retardant
The flame retardant treatment of the polymer material can prevent the material from burning or delay the spread of the fire. According to chemical composition, flame retardant can be divided into inorganic flame retardant and organic flame retardant. At present, the highest price is the halogen halogen flame retardant, but the flame retardant efficiency is high and the dosage is low, such as bromine flame retardant generally only needs to fill 18% ~ 20%. Inorganic hydrate is the cheapest, but it absorbs less heat than the heat of the polymer material. In order to achieve the ideal flame retardant effect, there must be a large amount of filling.
There are reports that the most cost-effective flame retardants are halogen flame retardants and Mg(OH)2 types of inorganic hydroxide flame retardants. Halogenated flame retardants often emit toxic or corrosive gases, with certain risks. Inorganic flame retardants mainly include antimony, aluminum, phosphorus and boron systems. The biggest advantage of inorganic flame retardants is low toxicity, low smoke or smoke suppression, low corrosion and low price. At present, more and more new inorganic flame retardants have been studied and applied at home and abroad, mainly magnesium hydroxide and aluminum hydroxide and antimony pentaoxides, especially magnesium hydroxide.
Inorganic hydroxide flame retardant magnesium hydroxide and its preparation method. In the early 80 s, Japan, Israel, France, the United States and other developed countries invest more manpower and material resources for the further research of all kinds of production methods of magnesium hydroxide, and build factories and achieved good economic and social benefits.
Since middle and later periods of the 80 s, many units have been in China for flame retardant of magnesium hydroxide and aluminum hydroxide process research, and they are being used to replace the traditional flame retardant, gradually achieved ideal flame retardant effect. At the end of the 20th century, the development of nano-grade magnesium hydroxide, especially for electrical materials, optical cable communication materials and other special applications, has been successful, and the new inorganic flame retardant can be monopolized. The flame retardant performance of magnesium hydroxide is superior to that of aluminum hydroxide, which is mainly reflected in the following aspects : the anti-smoking ability is much better than that of aluminum hydroxide.
Triphenyl Phosphate (TPP)
Flame retardant TPP has many advantages, such as excellent transparency, softness, bacterial resistance, and water proof, grease-proof, good electric insulation, as well as good compatibility. Flame retardant TPP is mainly used as the flame-retardant plasticizer for cellulose resin, vinyl resin, natural rubber and synthetic rubber. And it may also be used as the flame-retardant plasticizer for glyceryl triacetate thin ester and film, rigid polyurethane foam, phenolic aldehyde resin, and PPO, etc.
Flame retardant TPP is a kind of halogen-free environment-friendly flame retardant with phosphorus element. Most of the products in the market are self-colored flaky crystal, our product is self-colored crystalline powder, and is more soluble in organic solvents. TPP is not soluble in water, but soluble in benzene, chloroform, ether and acetone, and slightly soluble in Z alcohol. Flame retardant TPP is nonflammable with slight aromatic odor and slight deliquescence. The fusion point is about 50 ℃, and fast melts to hoop-shape when heated. The lubricate effect is excellent, and it is often used as the flame retardant plasticize lubricant. What is more, it is used as the flame retardant for many plastics and resins, such as phenolic aldehyde resin, epoxy resin and so on.
Magnesium hydroxide is a green flame retardant regardless of source, preparation process and waste treatment. It has a wider range of applications than aluminum hydroxide. At the same time, the decomposition energy of magnesium hydroxide (1.37kJ/g) is higher than the decomposition energy of aluminum hydroxide (1.17 kJ/g), and the heat capacity is 7 percent higher, which helps to improve the flame retardant efficiency. Magnesium hydroxide and other flame retardants have good compound ability, and the magnesium hydroxide flame retardant will be the main force in the market of inorganic flame retardants.
But now it seems that goals to reduce prices, occupy the market still hasn't been attained, and one of the reasons is that the lagged development of preparation technology level, such as the content of magnesium hydroxide flame retardant effect on the mechanical properties of polymer materials strongly depends on the morphology of magnesium hydroxide. However, it is not yet mature to control the preparation of the appropriate form of magnesium hydroxide crystal.
, due to the different raw materials used by the production method also is more, the main economic applicable production methods are: brine and bittern water - lime neutralization of ammonia synthesis, magnesite, dolomite multistage - hydrolysis carbide synthesis. These methods all can be prepared for flame retardant with fibrous magnesium hydroxide, the convenient raw material sources, low price, also relatively simple production technology, product performance is good, by-products can be recycled, basically no pollution in the process of production.
Inorganic hydroxide flame retardant aluminum hydroxide and its preparation method.
Account for the global aluminum hydroxide inorganic flame retardants consumption of more than 80%, with functions of retarding, suppressing smoke and filling, do not produce secondary pollution, with a variety of material to produce synergies, non-volatile, non-toxic and corrosion resistance, low cost, aluminum hydroxide flame retardant effect is its role in above 200 ℃ water absorption.
Aluminum hydroxide is an important inorganic flame retardant remained at the top of the flame retardant consumption how companies for production in our country, widely used in all kinds of plastic, paint, polyurethane elastomer and rubber products.
Granularity and quantities of aluminum hydroxide on the flame retardant performance and greater influence on the physical properties of materials, when the particles through the thick and filling amount is too large, will reduce the physical properties of the composite material, in order to improve these disadvantages, the modified aluminum hydroxide in the surface properties, particle size, etc.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
The flame retardant treatment of the polymer material can prevent the material from burning or delay the spread of the fire. According to chemical composition, flame retardant can be divided into inorganic flame retardant and organic flame retardant. At present, the highest price is the halogen halogen flame retardant, but the flame retardant efficiency is high and the dosage is low, such as bromine flame retardant generally only needs to fill 18% ~ 20%. Inorganic hydrate is the cheapest, but it absorbs less heat than the heat of the polymer material. In order to achieve the ideal flame retardant effect, there must be a large amount of filling.
There are reports that the most cost-effective flame retardants are halogen flame retardants and Mg(OH)2 types of inorganic hydroxide flame retardants. Halogenated flame retardants often emit toxic or corrosive gases, with certain risks. Inorganic flame retardants mainly include antimony, aluminum, phosphorus and boron systems. The biggest advantage of inorganic flame retardants is low toxicity, low smoke or smoke suppression, low corrosion and low price. At present, more and more new inorganic flame retardants have been studied and applied at home and abroad, mainly magnesium hydroxide and aluminum hydroxide and antimony pentaoxides, especially magnesium hydroxide.
Inorganic hydroxide flame retardant magnesium hydroxide and its preparation method. In the early 80 s, Japan, Israel, France, the United States and other developed countries invest more manpower and material resources for the further research of all kinds of production methods of magnesium hydroxide, and build factories and achieved good economic and social benefits.
Since middle and later periods of the 80 s, many units have been in China for flame retardant of magnesium hydroxide and aluminum hydroxide process research, and they are being used to replace the traditional flame retardant, gradually achieved ideal flame retardant effect. At the end of the 20th century, the development of nano-grade magnesium hydroxide, especially for electrical materials, optical cable communication materials and other special applications, has been successful, and the new inorganic flame retardant can be monopolized. The flame retardant performance of magnesium hydroxide is superior to that of aluminum hydroxide, which is mainly reflected in the following aspects : the anti-smoking ability is much better than that of aluminum hydroxide.
Triphenyl Phosphate (TPP)
Flame retardant TPP has many advantages, such as excellent transparency, softness, bacterial resistance, and water proof, grease-proof, good electric insulation, as well as good compatibility. Flame retardant TPP is mainly used as the flame-retardant plasticizer for cellulose resin, vinyl resin, natural rubber and synthetic rubber. And it may also be used as the flame-retardant plasticizer for glyceryl triacetate thin ester and film, rigid polyurethane foam, phenolic aldehyde resin, and PPO, etc.
Flame retardant TPP is a kind of halogen-free environment-friendly flame retardant with phosphorus element. Most of the products in the market are self-colored flaky crystal, our product is self-colored crystalline powder, and is more soluble in organic solvents. TPP is not soluble in water, but soluble in benzene, chloroform, ether and acetone, and slightly soluble in Z alcohol. Flame retardant TPP is nonflammable with slight aromatic odor and slight deliquescence. The fusion point is about 50 ℃, and fast melts to hoop-shape when heated. The lubricate effect is excellent, and it is often used as the flame retardant plasticize lubricant. What is more, it is used as the flame retardant for many plastics and resins, such as phenolic aldehyde resin, epoxy resin and so on.
Magnesium hydroxide is a green flame retardant regardless of source, preparation process and waste treatment. It has a wider range of applications than aluminum hydroxide. At the same time, the decomposition energy of magnesium hydroxide (1.37kJ/g) is higher than the decomposition energy of aluminum hydroxide (1.17 kJ/g), and the heat capacity is 7 percent higher, which helps to improve the flame retardant efficiency. Magnesium hydroxide and other flame retardants have good compound ability, and the magnesium hydroxide flame retardant will be the main force in the market of inorganic flame retardants.
But now it seems that goals to reduce prices, occupy the market still hasn't been attained, and one of the reasons is that the lagged development of preparation technology level, such as the content of magnesium hydroxide flame retardant effect on the mechanical properties of polymer materials strongly depends on the morphology of magnesium hydroxide. However, it is not yet mature to control the preparation of the appropriate form of magnesium hydroxide crystal.
, due to the different raw materials used by the production method also is more, the main economic applicable production methods are: brine and bittern water - lime neutralization of ammonia synthesis, magnesite, dolomite multistage - hydrolysis carbide synthesis. These methods all can be prepared for flame retardant with fibrous magnesium hydroxide, the convenient raw material sources, low price, also relatively simple production technology, product performance is good, by-products can be recycled, basically no pollution in the process of production.
Inorganic hydroxide flame retardant aluminum hydroxide and its preparation method.
Account for the global aluminum hydroxide inorganic flame retardants consumption of more than 80%, with functions of retarding, suppressing smoke and filling, do not produce secondary pollution, with a variety of material to produce synergies, non-volatile, non-toxic and corrosion resistance, low cost, aluminum hydroxide flame retardant effect is its role in above 200 ℃ water absorption.
Aluminum hydroxide is an important inorganic flame retardant remained at the top of the flame retardant consumption how companies for production in our country, widely used in all kinds of plastic, paint, polyurethane elastomer and rubber products.
Granularity and quantities of aluminum hydroxide on the flame retardant performance and greater influence on the physical properties of materials, when the particles through the thick and filling amount is too large, will reduce the physical properties of the composite material, in order to improve these disadvantages, the modified aluminum hydroxide in the surface properties, particle size, etc.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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