Nitrogen and phosphorus containing flame retardant agent and preparation method thereof as well as application thereof

Abstract

The invention relates to a preparation method of a nitrogen and phosphorus containing flame retardant agent, the nitrogen and phosphorus containing flame agent and application thereof. The preparation method comprises the following steps of: carrying out condensation reaction on phenylene diamine and aromatic aldehyde, then carrying out addition reaction with DOPO (9, 10-Dihydro-9-oxa-10-phosphaphenanthrene 10-oxide) to obtain solid nitrogen and phosphorus containing flame retardant agent molecules. The preparation method has the advantages of easiness in control, good repeatability, high yield and suitability for expanded production. The obtained flame retardant agent molecules have amino groups and phenolic hydroxyl active groups and can further react with matters containing expoxy group functional groups. The flame retardant agent molecules contain nitrogen and phosphorus elements and have good expansion char forming characteristic and very good flame retardant effect in the burning process; when the flame retardant agent molecules resist the flaming of the epoxy resin, the flame retardant agent molecules can further undergo cross-linking reaction with resin, thereby increasing the glass transition temperature, the bonding strength, the mechanical property and the like of the resin; meanwhile, the flame retardant agent molecules have good flame retardant property; the limiting oxygen index of the flame retardant agent molecules is substantially increased; and the vertical burning grade of the flame retardant agent molecules reaches a UL-94V-0 grade.

Description

technical field

[0001] The present invention relates to 10-oxo-10-hydrogen-9-oxa-10 lambda 5 -Nitrophosphorous flame retardant of phosphaphenanthrene-10-group and its preparation method, the flame retardant is a flame retardant molecule containing active functional groups, which can be added to polymers in various ways, and can improve the polymer Flame retardant, mechanical and other properties belong to the field of flame retardant technology. Background technique

[0002] Polymer materials have been widely used in many technical fields such as aerospace, electronic information, household appliances, and automobile industry due to the advantages of abundant raw material sources, easy processing, many varieties, and excellent comprehensive performance. However, most of them are flammable materials, which are easy to cause fire and pose a major threat to life and property safety.

[0003] At present, the addition of flame retardants is widely used in various polymers to i...

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