Multi-scale layered flame-retardant material and preparation method thereof

Abstract

The invention provides a preparation method of a multi-scale layered flame-retardant material. The preparation method comprises the following steps that S1, the layered flame retardant is prepared, specifically, a certain amount of graphene oxide is dispersed in a solvent, then a certain amount of intumescent flame retardant is added into the solvent dissolved with graphene oxide, dispersing continues carrying out, finally a water absorbent is added, and the layered flame retardant is obtained after stirring and reacting; and S2, the multi-scale layered flame-retardant material is prepared, specifically, a certain amount of the layered flame retardant prepared in the step 1, a certain amount of intumescent flame retardant and a certain amount of polymer matrix are mixed, and the multi-scale layered flame-retardant material is prepared in an injection molding machine under a specified injection molding process. The invention further provides the multi-scale layered flame-retardant material prepared by the preparation method of the multi-scale layered flame-retardant material. The flame-retardant material prepared by the preparation method has the advantages of being good in flame-retardant effect, good in mechanical property, low in production cost, environmentally friendly, safe and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a multi-scale layered flame-retardant material and a preparation method thereof. Background technique [0002] Polymer materials have the advantages of light weight, high strength, good stability, good electrical insulation performance, and aging resistance. They are widely used in industries such as automobiles, electronic appliances, mechanical equipment, and construction. It is necessary to improve the flame retardancy of polymer materials. [0003] The traditional flame retardant modification of polymer materials is to add flame retardants to polymer materials. Among them, halogen-based flame retardants have high flame-retardant efficiency, but they will produce toxic substances during combustion, which is harmful to the environment; non-halogen-based flame retardants, such as intumescent flame retardants (IFR), graphene, etc., have Low smoke, low toxi...

AI Technical Summary

Problems solved by technology

Among them, the methods of coating and sheet lamination are relatively easy to realize the distribution of the flame retardant on the surface of the substrate, which can achieve a better flame retardant effect in theory, but the way of coating and sheet lamination makes the relative relationship between the substrate and the flame retardant The compatibility is very poor, which will lead to a decrease in the flame retardant effect; while the traditional melt blending makes the flame retardant well dispersed in the matrix, and the compatibility between the flame retardant and the matrix is ​​better, but due to the uniformity of the flame retardant Dispersion leads to the same flame retardant performance inside and outside the matrix. To achieve a better flame retardant effect, a higher amount of flame retardant needs to be added, which will also lead to the destruction of the mechanical properties of the matrix and high production costs.

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