Hydrotalcite-ammonium polyphosphate halogen-free flame retardant and preparation method thereof

Abstract

The invention discloses a hydrotalcite-ammonium polyphosphate halogen-free flame retardant and a preparation method thereof. Hydrotalcite, which serves as the raw material, is subjected to anion exchange with ammonium polyphosphate to obtain the hydrotalcite-ammonium polyphosphate halogen-free flame retardant. The preparation method comprises the following steps: (1) mixing hydrotalcite with industrial alcohol, carrying out 0-50Hz ultrasonic treatment for 0.5-1 hour, and carrying out water bath at 60-80 DEG C while stirring for 1-3 hours, thereby obtaining a uniform suspension; and (2) while continuously stirring, adding ammonium polyphosphate of which the polymerization degree is 1000-1200 into the suspension obtained in the step (1), regulating the pH value of the reaction liquid to 4.0-5.0, carrying out water bath at 60-80 DEG C while stirring for 2-6 hours, filtering, washing the filter cake, drying, and grinding to obtain the hydrotalcite-ammonium polyphosphate halogen-free flameretardant. The halogen-free flame retardant disclosed by the invention is halogen-free and flame-retardant, has the functions of filling, reinforcement and the like, has the advantages of simple preparation technique, wide material sources and high practicality, and is easy to operate.

Description

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AI Technical Summary

Benefits of technology

In this new type of material that contains calcium hydroxyapatite (CaHAP) crystals), there's no harmful chemical called bromine or chloride atoms at all except for some other elements like nitrogen gas which makes it difficult to fire effectively without causing any damage from burning out too much fuel during combustions. By adding these particles into rubber compounds instead of solid ones, they improve their performance over existing methods such as organophilics and molded resin products. These improvements make them more durable than current alternatives but still have potential applications in various industries where high levels of environmental safety standards require flames resistancy.

Problems solved by technology

Technologies aim towards improving the performance and safety of flames caused by various chemical substitutes including halogens, metal salts like calcium salt, iron powder, metals, aliquaternary amine containing fluoro groups, cyanates, melamite, pyromelene, tungsten trioxy radical hexaphosphonazo-1(2012), perovskites, silicon carbons, nanocompositions made from these agents, and others. However, this problem arises because conventional methods require multiple steps during synthesis process leading to increased cost and reduced yield compared to smaller amounts of each ingredient.

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