Nitrogen-phosphorus efficient flame retardant containing p-hydroxybenzaldehyde and tryptamine structures, preparation method and application

Abstract

The invention discloses a nitrogen-phosphorus efficient flame retardant containing p-hydroxybenzaldehyde and tryptamine structures, a preparation method and an application. The preparation method comprises the following steps: S1, adding p-hydroxybenzaldehyde and tryptamine into a solvent for reaction under the protection of nitrogen to obtain a p-hydroxybenzyltryptamine Schiff base solution; S2,adding 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide into the p-hydroxybenzyltryptamine Schiff base solution obtained in the step S1 for reaction to obtain a p-hydroxybenzyltryptamine phosphaphenanthrene solution; and S3, cooling the p-hydroxybenzyltryptamine phosphaphenanthrene solution obtained in the S2 to room temperature, adding deionized water to separate out a white solid, filtering,washing the white solid with deionized water for 2-3 times, and drying the white solid to obtain the nitrogen-phosphorus efficient flame retardant containing p-hydroxybenzaldehyde and tryptamine structures. The high polymer material prepared by the invention has good transparency.

Description

technical field [0001] The invention relates to the technical field of organic flame retardants, in particular to nitrogen-phosphorus high-efficiency flame retardants containing p-hydroxybenzaldehyde and tryptamine structures, a preparation method and applications. Background technique [0002] Resin is a kind of polymer material commonly used in daily life. Because of its good anti-oxidation and anti-corrosion properties, it is applied to many technical fields. However, the resin is flammable and has low safety. [0003] Epoxy resin is an important class of thermosetting plastics. Because of its good adhesion, electrical insulation and chemical stability, it is widely used in coatings, adhesives, electronic and electrical materials, engineering plastics and composite materials, civil engineering materials, etc. field. However, the limiting oxygen index of epoxy resin is very low, and it is extremely flammable. After a fire, it continues to burn and emits a large amount of...

AI Technical Summary

Problems solved by technology

In the prior art, the preparation of the flame retardant of epoxy resin is often compounded with 9,10-dihydro-9-oxygen-10-phosphaphenanthrene-10-oxide (DOPO), but the existing flame retardant Most of the high molecular flame retardant materials prepared by the agent have the problem of poor transparency, which limits the scope of its application.

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