Polyaniline/carbon black composite and preparation method thereof

Abstract

A polyaniline / carbon black composite and a preparation method thereof are disclosed The polyaniline / carbon black composite is formed by polyaniline covering carbon black and is with core-shell structure while the polyaniline / carbon black composite contains 10-30 wt. % of carbon black. The preparation method of polyaniline / carbon black composite includes the steps of: disperse carbon black into solution to form carbon black solution, add aniline into the carbon black solution to form a first solution; dissolve ammonium persulfate into acid aqueous solution to form a second solution; add the second solution to the first solution, after reaction, through filtering and grinding to produce polyaniline / carbon black composite.

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates to a polyaniline / carbon black composite and a preparation method thereof, especially to a polyaniline / carbon black composite and a preparation method thereof that are applied to dielectric material with microwave absorption or conductive coatings with corrosion resistance.[0002]The research and development of conductive coatings have been over a half-century. Working as conductive layer, electromagnetic wave shielding layer and antistatic coating, the conductive coatings have broad perspective and increasing market demands. The membrane surface of the conductive coating has higher resistance, charge generated thereon is not dissipated effectively so that static charges tend to accumulate thereon. This leads to certain limitations on applications of some respects such as dust proofing and bacteria resistance in medicine, protection from electric shock in medical operations, static protection for preventing static ignition...

AI Technical Summary

Benefits of technology

[0005]Therefore it is a primary object of the present invention to provide a polyaniline / carbon black composite and a preparation method thereof that improve conductivity of polyaniline by nanoscale carbon black.

[0008]It is a further object of the present invention to provide a polyaniline / carbon black composite and a preparation method thereof that overcome shortcomings of conductive coatings caused by large amount of graphite being added such as reduced physical property, poor mechanical property and poor processability.

Problems solved by technology

This leads to certain limitations on applications of some respects such as dust proofing and bacteria resistance in medicine, protection from electric shock in medical operations, static protection for preventing static ignition and explosion in mine environment and petrochemistry, dust-proofing for protection of integrated circuit, and fiber accumulation in spinning industry.

However, addition of graphite results in poor physical and mechanical properties and poor processability.

This leads to limits on usefulness of the conductive coating.

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