Analysis of Advantages and Disadvantages of Red Phosphorus Flame Retardant
Red phosphorus flame retardant is a kind of flame retardant represented by red phosphorus. It is a kind of purple or brown amorphous powder. It is an organic halogen-free flame retardant with excellent thermal stability, non-volatility, no corrosive gas, good flame retardant effect and good electrical insulation.
red phosphorusflame retardantIt is a kind of flame retardant represented by red phosphorus. It is a kind of purple or brown amorphous powder. It is an organic halogen-free flame retardant with excellent thermal stability, non-volatility, no corrosive gas, good flame retardant effect, good electrical insulation and so on. There is no danger of toxicity during use, the addition amount is small, insoluble, and the melting point is high. Can be widely used in a variety of resin, unsaturated resin, hot melt adhesive, rubber, coating and other products of flame retardant. At present, halogen-free, low-smoke, low-toxic environmentally friendly flame retardants have always been the goal of people's pursuit. In recent years, some flame retardant suppliers and applications around the world have shown high enthusiasm for halogen-free flame retardants. The development of flame retardant and flame retardant materials has also invested a lot of strength. According to analysis, the main varieties of halogen-free flame retardants are phosphorus flame retardants and inorganic hydrates, and phosphorus flame retardants mainly include red phosphorus flame retardants.
Among the phosphorus series flame retardants, red phosphorus may have the best flame retardant effect and the highest flame retardant efficiency, because red phosphorus is theoretically a complete phosphorus element, and the phosphorus content can reach 100. Although the phosphorus content after coating has decreased, it is still far higher than other phosphorus compounds. In addition, the moisture absorption and processing thermal stability of the coated red phosphorus are more convenient in storage and transportation, therefore, red phosphorus is currently the most widely used thermoplastic material among phosphorus series flame retardants, but its weakness is that the color must be red or black, which greatly limits its application in many materials. In addition, although red phosphorus is coated, it is limited to various reasons of process and raw materials, which may inevitably cause "fire" in the process of use ", what is more serious is that the processing characteristics of red phosphorus are relatively poor, the compatibility with resin is not very good, the mechanical properties of the processed materials are very poor, and the" stench "taste in the production process makes it difficult to be promoted in high-grade materials.
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Everyone knows that there are two common flame retardants. Today we are going to talk about only one of them. Aluminum hydroxide flame retardant is an environmentally friendly halogen-free flame retardant, which can be widely used in fabrics, wood, plastics, and rubber., Polyurethane and other industries have ideal flame retardant effect. In the process of industrial application, it is found that flame retardant failure occurs when aluminum hydroxide flame retardant is added. The following are the reasons for the failure of aluminum hydroxide flame retardant, how to prevent it, how to deal with the operation, and restore the original function.
As a flame retardant, magnesium hydroxide also need to improve what aspects?
When it comes to flame retardants, everyone is familiar with them. Although we usually have less contact with them, we can know what they are used for from the name. Have to talk about magnesium hydroxide, we all know that its main presentation state is a granular, at present, the market sales of magnesium hydroxide particle size is larger, part of the commodity particle size up to tens of microns, immediately used as a flame retardant, poor dispersion, the physical properties of raw materials greater harm. In industrial production, physical grinding methods are generally used to reduce the particle size to 1 micron. The surface of magnesium hydroxide has high polarity and is easy to agglomerate. As the compatibility of refractory materials and polymer substrates, it not only reduces its flame retardant grade, but also causes more serious harm to the physical properties of raw materials.
Hefei Zhongke Flame Retardant New Material Co., Ltd
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