Flame-retardant epoxy resin compound and preparation method and application thereof

Abstract

The invention provides a flame-retardant epoxy resin compound and a preparation method and application thereof, and belongs to the technical field of flame-retardant materials. The provided flame-retardant epoxy resin compound is prepared from raw materials comprising the following components in parts by mass: 0.01-8 parts of black phosphorus; 1-100 parts of epoxy resin; 0.01-5 parts of a curing agent; and 0.01-1 part of a curing accelerator, wherein a mass fraction of the black phosphorus in the flame-retardant epoxy resin compound is less than or equal to 8%. In the provided flame-retardantepoxy resin compound, the black phosphorus is an allotrope of phosphorus, and has good temperature stability and flame retardancy. By adding the black phosphorus, electronic characteristics of the black phosphorus itself are utilized, so that the black phosphorus can form a good compound with epoxy resin molecular chains, and thereby the provided flame-retardant epoxy resin compound has good stability and mechanical properties. In addition, by adding the black phosphorus, flame retardancy of the flame-retardant epoxy resin compound is effectively improved.

Description

technical field [0001] The invention relates to the technical field of flame retardant materials, in particular to a flame retardant epoxy resin compound and its preparation method and application. Background technique [0002] Epoxy resin is one of the most widely used matrix resins in polymer material-based composite materials. It has excellent chemical corrosion resistance, electrical insulation performance, adhesion, and easy processing. Its low shrinkage rate, small linear expansion coefficient and low cost make it widely used in the packaging of electronic components such as ion batteries, supercapacitors, diodes, and triodes. [0003] When used as a packaging material for devices, since epoxy resin has a low limiting oxygen index and is a flammable substance, it is necessary to combine it with a flame-retardant substance to form a flame-retardant compound for use. Usually, the method used to prepare this kind of flame retardant compound is to add a halogen-containing...

AI Technical Summary

Problems solved by technology

However, the first type of inorganic phosphorus-based flame retardants has a large amount of addition, and has problems such as poor dispersion and compatibility; moreover, red phosphorus is easy to spontaneously ignite during processing, and the acidic substances produced by the reaction will corrode equipment. However, due to the influence of its own physical and chemical properties, it is difficult to fundamentally improve its performance, which greatly limits the use of red phosphorus additive flame retardants

The second type of organophosphorus flame retardants has defects such as poor compatibility, poor thermal stability, large smoke generation, and high volatility, so its application is greatly restricted.

More importantly, in order to achieve high flame retardancy, epoxy resins in the prior art need to add a large amount of flame retardant to meet the flame retardant requirements. The amount of flame retardant added is generally more than 15%, while a large amount of flame retardant is added The agent destroys the original characteristics of the epoxy resin

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