MANUFACTURER OF HALOGEN FREE FLAME RETARDANT ADDITIVES
Why Choose Magnesium Hydroxide as a Flame Retardant
What is the performance of magnesium hydroxide in flame retardants? Should we choose magnesium hydroxide as a flame retardant? Let me give you a detailed introduction below.
Flame retardants are additives that make polymers less likely to catch fire, allowing them to burn more slowly after fire. According to the classification of elements contained in flame retardants, they can be divided into organic and inorganic flame retardants. Organic flame retardants can be divided into flame retardants, halogen flame retardants (including chlorine and bromine) and nitrogen-based flame retardants; inorganic flame retardants include antimony compounds, phosphorus and phosphoric acid, boron compounds, magnesium hydroxide, zirconium compounds and bismuth compounds. With the development of science and technology and the improvement of people’s environmental awareness, the research and application of flame retardants in today’s world are moving towards the development direction of non-halogenated.
Representative of the application of inorganic flame retardants with aluminum hydroxide and magnesium hydroxide, it relies on chemical decomposition of endothermic and exothermic water to dilute the mass fraction of oxygen in the air to form an insulating layer on the surface of magnesium oxide that exerts a flame retardant effect on the polymer. Formed after decomposition, it has the chemical stability of a series of non-toxic, smoke-free and decomposition product inhibition (aluminum oxide, magnesium oxide), so it does not cause 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 naturally exhibits hydrophilic and oleophobic surface properties, making it difficult to disperse evenly in the Organic polymers. Therefore, if magnesium hydroxide powder is not used to fill the surface of the polymer, other properties of the polymer material (such as processing properties and mechanical properties) will be seriously deteriorated.
Therefore, based on the advantages and the situation of magnesium hydroxide as a flame retardant, it can be determined and studied to achieve better results, and better results can be obtained when applied in production and life.
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