Preparation method of polyaniline-polyacrylate compound

Abstract

The invention discloses a preparation method of a polyaniline-polyacrylate compound, and relates to the technical field of polyaniline synthesis. The preparation method comprises the following steps: firstly, enabling part of active solvent to be reacted with part of mixed monomers and initiator, then, heating the reacted mixed system, next, dropwise adding the other part of mixed monomers, initiator and active solvent, and carrying out preserved heat reaction until the reaction is ended; cooling the system generated through the reaction to 0-20 DEG C, adding aniline, uniformly stirring, then, dropwise adding an oxidative initiator solution, and then, reacting at normal temperature until the reaction is ended. Polyaniline and polyacrylate resin in the polyaniline-polyacrylate compound disclosed by the invention are formed into a molecular compound to be added into an anticorrosive coating, so that not only is the uniform dispersion of polyaniline in the coating realized, but also polyacrylate resin in the compound can be used for promoting the compatibility of the polyaniline and film forming materials in an anticorrosive coating, so that the long-acting corrosion resistance and environment friendliness of polyaniline in a heavy anticorrosive coating can be realized.

Description

Technical field [0001] The invention relates to a synthesis technology of polyaniline, in particular to the technical field of preparation of composite polyaniline which is applied in the field of long-acting and environmentally friendly heavy-duty anticorrosive additives. Background technique [0002] Polyaniline has become one of the most promising electroactive polymers due to its many advantages such as easy availability of raw materials, simple synthesis, high conductivity and good environmental stability. [0003] The anti-corrosion performance of polyaniline is very excellent, mainly reflected in the passivation of the metal surface, increasing the potential, and preventing the occurrence of electrochemical corrosion reaction; the passivation film generates an electric field on the metal surface, the direction of the electric field is opposite to the electron transfer direction. Blocking the transfer of electrons from the metal to the passivation film is equivalent to a barr...

AI Technical Summary

Problems solved by technology

However, due to the conjugated structure of polyaniline, it is difficult to be compatible with general-purpose coating resins. As a result, it is difficult to form a dense composite coating. The overall performance of anti-corrosion coatings decreases due to the deterioration of film compactness

[0005] At present, due to the addition of high-efficiency anti-corrosion pigments in heavy-duty coatings, the coating film often slowly releases toxic heavy metal ions into the environment, causing serious pollution to the environment.

With the increasingly stringent environmental regulations, the use of such anti-corrosion pigments is strictly limited

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