Intumescent flame retardant of borate derivative and preparation method thereof

Abstract

The invention discloses an intumescent flame retardant of a borate derivative and a preparation method thereof. The name of the borate derivative is 1,3,5-tris-{4,6-bis-[([1,3,2] dioxaborolan-2-oxo)-oxethyl]-1,3,5-triazine-2-oxo}benzene. During preparation, phloroglucinol and N-ethyldiisopropylamine are added into a tetrahydrofuran solution and dropwisely added into the tetrahydrofuran solution of cyanuric chloride, and filtering is performed after the reaction; purification is performed to obtain an intermediate product 1; ethylene glycol and methylbenzene are stirred and mixed, boric acid is added, the temperature is increased continuously, stirring and backflow are performed, methylbenzene is removed, vacuum drying is performed, and an intermediate product 2 is obtained; under the nitrogen protection, the intermediate product 2 is dissolved into the tetrahydrofuran solution, then, sodium hydroxide is added, the tetrahydrofuran solution with the intermediate product 1 is added in batches, and a reaction is performed; suction filtration is performed, liquid-phase spinning drying is performed, and separation is performed to obtain the intumescent flame retardant of the borate derivative. The borate derivative can be adopted as the good environment-friendly organic fire retardant.

Description

technical field [0001] The invention relates to an intumescent flame retardant, in particular to an environment-friendly intumescent flame retardant based on star borate derivatives and a preparation method thereof. Background technique [0002] Compared with traditional inorganic metal materials, polymer materials have their own unique advantages, and they play an increasingly important role in the national economy and people's lives. However, most polymer materials are flammable materials, which will pose a huge threat to people's property and life, so flame retardants are very important. Flame retardants can be divided into inorganic flame retardants and organic flame retardants according to their attributes. Inorganic flame retardants have the advantages of low smoke, low toxicity, halogen-free, good stability, and low price. The disadvantages such as poor capacitance and reduced material performance are limited to a certain extent. Although the traditional organophosp...

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Problems solved by technology

[0003] Boron, phosphorus and nitrogen are all flame retardant elements. Although organic phosphorus flame retardants containing flame retardant phosphorus in the organic molecular structure have good flame retardant properties, they have certain toxicity.

While the organic nitrogen flame retardant containing only one flame retardant element nitrogen in the organic molecular structure is non-toxic, but its flame retardant performance is relatively weak.

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