Conductive polyaniline blend fiber and preparation method and application thereof

Abstract

The invention provides a conductive polyaniline blend fiber and a preparation method and application thereof. The conductive polyaniline blend fiber comprises polyaniline and other polymers, wherein the mass percentage of the polyaniline is 50-80 wt% when the total mass of the conductive polyaniline blend fiber is calculated as 100%; the other polymers are selected from any one or a combination ofat least two of polystyrene, polyacrylonitrile and polyvinylpyrrolidone. The provided conductive polyaniline blend fiber has good mechanical performance when the conductivity can be up to 10<-3> or above.

Description

Technical field [0001] The invention belongs to the technical field of conductive composite fibers, and relates to a conductive polyaniline blend fiber and a preparation method and application thereof. Background technique [0002] Polyaniline (PANI) is a conductive polymer in the semi-flexible rod polymer family. Although this compound was discovered more than 150 years ago, since the early 1980s, due to the discovery of its high conductivity properties, polyaniline has regained the attention of the scientific community. Among the conductive polymers and organic semiconductor series, polyaniline has many attractive processing properties. Thanks to its rich chemical properties, polyaniline is one of the most studied polymers in the past 50 years. Due to its advantages of low density, controllable conductivity, and excellent blending properties, polyaniline composites are also excellent substitutes for conductive metal materials. They are mostly used in printed circuit board man...

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Problems solved by technology

[0003] CN1185377C discloses a polyaniline / polyamide conductive fiber and its preparation method, the conductive fiber is composed of polyaniline, polyamide and dopant three components, polyaniline and polyamide and doped The concentrated sulfuric acid blend solution of the agent is extruded into the coagulation bath, and the conductive fiber is obtained by stretching. The conductivity of the obtained conductive fiber can be controlled at 10 -6 -10(cm Ω) -1 However, because the amount of conductive polyaniline is less, the electrical conductivity is lower, and when the amount of polyaniline is increased, the mechanical properties of the fiber will be greatly affected

CN1831033A discloses a conductive polyaniline composite film, which is a composite film with a lotus leaf composite structure, and it is a film with a network structure composed of nanofibers with microspheres, and there are protrusions on the surface of the fibers and microspheres , the preparation method includes: dissolving intrinsic polyaniline in a solvent, filtering out insoluble matter, adding doped acid and polystyrene in sequence to obtain a conductive polyaniline mixed solution; finally using electrospinning technology to obtain a mixed solution of conductive polyaniline on a receiving device Cured conductive polyaniline composite film; although the composite film exhibits extremely high self-cleaning ability, the mixed solution tends to gel during the preparation process, and its conductivity is too small to be used in places that require high conductivity , and its mechanical properties are poor, so it cannot be applied on a large scale in industry

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