Anti-dropping macromolecular sulfonate flame retardant and preparation method therefor

Abstract

The invention relates to the technical field of high polymers and particularly relates to an anti-dropping macromolecular sulfonate flame retardant and a preparation method therefor. The method comprises the following steps: 1) mixing an emulsifier, unsaturated sulfonate, an unsaturated monomer and part of deionized water in parts by weight, carrying out heating and stirring until the mixture is uniform so as to obtain a mixture A, and carrying out heat preservation for later use; 2) adding an initiator into the mixture A, carrying out heating, carrying out stirring, and carrying out a free radical reaction, so as to obtain a macromolecular sulfonate copolymer emulsion for later use; 3) adding the other part of deionized water and a polytetrafluoroethylene emulsion into the macromolecularsulfonate copolymer emulsion, and carrying out heating-up and stirring, so as to obtain a mixture B for later use; and 4) adding a coagulant into the mixture B, carrying out uniform stirring, then, carrying out heating and reaction, and subjecting an obtained precipitation product to washing, baking and crushing, thereby obtaining the anti-dropping macromolecular sulfonate flame retardant. The anti-dropping macromolecular sulfonate flame retardant disclosed by the invention has durable flame retardance and anti-dropping characteristic.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to an anti-dripping polymer sulfonate flame retardant and a preparation method thereof. Background technique [0002] Thermoplastic materials have the advantages of being lightweight, easy to manufacture and industrialized production. They are used in all aspects of our daily production and life, and have brought great impetus to human development. However, thermoplastic materials are easy to burn, soften and deform when heated, and even drip. In the production process, flame retardants need to be added to make them have a wider scope of application. At present, the research and application of flame retardant modification of plastic products have proved that adding flame retardants can delay combustion and reduce the intensity of combustion. However, during the burning process of plastic products, in addition to burning themselves, other combustibles will be dripped and ignited, ca...

AI Technical Summary

Problems solved by technology

The introduction of sulfonate can endow polycarbonate with catalytic flame retardancy, and the organic sulfonate such as potassium diphenylsulfonesulfonate (KSS) which has been industrially applied has good catalytic flame retardancy for polycarbonate materials, but It is a small molecule flame retardant and the polycarbonate material matrix lacks physical entanglement and is easy to precipitate, so the application limitations are large

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