Phosphorus-containing organic acid alkenyl amine salts as well as preparation method and application thereof

Abstract

The invention discloses phosphorus-containing organic acid alkenyl amine salts as well as a preparation method and application thereof. A series of phosphorus-containing organic acid alkenyl amine salts are synthesized through neutralization reaction between phosphorus-containing organic acid and alkenyl amine compounds, related raw materials are easy to obtain, the synthesis process is simple, conditions are mild, pollution is avoided, byproducts are not generated, and large-scale production can be achieved. When being used as a flame-retardant cross-linking agent, the phosphorus-containing organic acid alkenyl amine salts have excellent compatibility with unsaturated polyester resin (UPR); and after curing, phosphorus-containing groups are introduced into the UPR network through ionic bonds in the form of salt. By adding 10-15% of the phosphorus-containing organic acid alkenyl amine salts, the LOI value of the flame-retardant UPR reaches 30% or above, the LOI value of the flame-retardant UPR composite material reaches 37% or above, and the flame-retardant UPR material keeps excellent heat resistance, mechanical properties and other properties, and has wide application prospects in the fields of traffic, buildings, ships and the like.

Description

technical field [0001] The invention belongs to the field of flame-retardant materials, and in particular relates to a phosphorus-containing organic acid alkenyl amine salt and a preparation method thereof, as well as an application in flame-retardant unsaturated polyester resins and composite materials thereof. Background technique [0002] Flame retardant is an important polymer material additive, which can inhibit or slow down the ignition of flammable polymers (including plastics, rubber, fibers, wood, paper, coating adhesives, etc.), and / or reduce the rate of flame spread. Usually, flame retardants can be introduced into polymer systems through physical blending, surface technology and chemical copolymerization. Materials such as flame-retardant resins, plastics, and elastomers can be easily obtained through physical blending, but they face the problems of low flame-retardant efficiency of flame retardants and poor compatibility with substrates, resulting in deteriorati...

AI Technical Summary

Problems solved by technology

However, the above-mentioned imidazolium salts of phosphorus-containing organic acids do not contain alkenyl groups available for free radical polymerization, are limited to epoxy resin systems, and cannot be used in the more flammable unsaturated polyester resins (UPR)

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