A kind of multifunctional carbon nanotube plant-derived fiber and preparation method thereof

Abstract

The invention provides a multifunctional carbon nanotube plant source fiber, which belongs to the field of cellulose fiber. The fiber is composed of two parts, an inner layer and an outer layer; the inner layer is distributed with microcavities and carbon nanotubes; the inner layer accounts for 65-75% of the total dry weight of the fiber; the outer layer accounts for the total weight of the fiber 25-35% of the weight, the electrical conductivity of the multifunctional carbon nanotube plant source fiber is ≥2.4×10 4 S / m. The present invention also provides a method for preparing multifunctional carbon nanotube plant-derived fibers. The method includes the preparation step of viscose spinning liquid; the preparation step of viscose spinning liquid includes adding modification auxiliary agent slurry; a kind of multifunctional carbon nanotube plant source fiber prepared by the present invention, the inner layer adopts the traditional sulfonate method glue making process, adopts the coagulation bath process formed by the skinless core layer, and the outer layer adopts the creative solvent method. Coating and solidification regeneration, the prepared fiber has higher strength, better conductivity, better antibacterial persistence, higher wet modulus, especially dry breaking strength than ordinary viscose fiber.

Description

technical field [0001] The invention provides a cellulose fiber and a preparation method thereof, in particular to a multifunctional carbon nanotube plant source fiber and a preparation method thereof, belonging to the field of cellulose fibers. Background technique [0002] Carbon nanotubes have good mechanical properties. The tensile strength of CNTs reaches 50-200GPa, which is 100 times that of steel, but the density is only 1 / 6 of steel, which is at least an order of magnitude higher than that of conventional graphite fibers; its elastic modulus can reach 1TPa , which is comparable to the elastic modulus of diamond. Although the structure of carbon nanotubes is similar to that of polymer materials, its structure is much more stable than that of polymer materials. Carbon nanotubes are currently the materials with the highest specific strength that can be prepared. If other engineering materials are used as the matrix to make composite materials with carbon nanotubes, th...

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Problems solved by technology

[0006] Comprehensively, the production technology of plant dyed fiber disclosed by domestic plant natural pigments only extracts plant pigments such as important components in plant leaves, while other components such as protein, amino acid, caffeine, polyphenols, carbohydrates, etc. , lipids, minerals, some plant pigments, vitamins, organic acids, etc., are all removed by chemical treatment, and these effective bioactive ingredients and the cellulose of the leaves themselves have not been effectively utilized. In addition, many Active ingredients are very easy to oxidize and brown under alkaline conditions. As known knowledge, the strong alkaline viscose spinning solution of the viscose fiber production process of the common sulfonate method is sprayed into a strongly acidic acid bath environment to form, Very easy to cause damage and loss of active ingredients

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