Analysis of Advantages and Disadvantages of Magnesium Hydroxide in Flame Retardant Application
Flame retardant is an additive that can make the polymer not easy to catch fire, and the fire makes it slow after burning. According to the classification of the elements contained in the flame retardant, it can be divided into organic and inorganic flame retardants. Organicflame retardantCan be divided into flame retardants, halogen flame retardants (including chlorine and bromine) and nitrogen flame retardants; inorganic flame retardants include antimony compounds, phosphorus and phosphoric acid, boron compounds,Magnesium hydroxidezirconium compounds and bismuth compounds. With the development of science and technology and the improvement of people's awareness of environmental protection, the research and application of flame retardants in today's world is moving in the direction of non-halogenated.
The representative of the application of inorganic flame retardants with aluminum hydroxide and magnesium hydroxide is formed after the decomposition of the insulating layer on the surface of magnesium oxide by chemical decomposition to absorb heat and dilute the mass fraction of oxygen in the air by discharging hot water. It has the chemical stability of non-toxic, smoke and decomposition product inhibition (alumina, magnesium oxide) series, so it does not produce secondary damage. However, the use of aluminum hydroxide and magnesium hydroxide as flame retardants has the following disadvantages: first, the flame retardant efficiency is low, so a higher concentration is required; second, it is naturally hydrophilic and oleophobic surface properties, and it is difficult to uniformly disperse in organic polymers. Therefore, if the magnesium hydroxide powder is not used to fill the surface treatment of the polymer, the other properties of the polymer material (such as processing properties and mechanical properties) are seriously deteriorated.
Therefore, according to the advantages and disadvantages of magnesium hydroxide as a flame retardant, determination and research can achieve better results, and better results can be obtained when applied to production and life.
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As a flame retardant, magnesium hydroxide also need to improve what aspects?