A kind of spherical nano aramid fiber material and preparation method thereof

Abstract

The invention discloses a novel spherical nanometer aramid fiber material. The novel spherical nanometer aramid fiber material is solid round balls with the diameter of 50-200nm, wherein the surfaces of the solid round balls are smooth, the solid round balls are narrow in particle size distribution, and the weight percentage of the solid round balls is 1.6%-2.0%. A preparation method of the novel spherical nanometer aramid fiber material comprises the following steps: adding poly-p-phenylene terephthamide short fibers and potassium hydroxide according to a weight ratio being 2:3-9:5 to anhydrous dimethyl sulfoxide under the protection of nitrogen, and mechanically stirring at room temperature for 3-5 days till thoroughly reacting, thus obtaining a crimson aramid fiber nanometer solution. The novel spherical nanometer aramid fiber material prepared by the method is expected to serve as a novel nanometer addition material for preparing high-performance composite materials. The preparation method is low in cost, high in treatment efficiency, simple in process and suitable for large-scale technological production.

Description

technical field [0001] The invention belongs to the technical field of spherical nano-aramid materials, and in particular relates to a novel spherical nano-aramid material, which is prepared by using short poly-p-phenylene terephthalamide (PPTA) fibers as a precursor and treating it with potassium hydroxide at room temperature. A method for novel spherical nano-aramid materials. Background technique [0002] With the development of nanotechnology, the research and development of nanomaterials in the field of polymer materials is emerging and has become a trend. So far, important polymer nanomaterials similar to inorganic nanostructures, including nanospheres, nanosheets, and nanotubes, have been prepared. . Polymer nanospheres have always been a hot area of ​​research for researchers. Due to the characteristics of small size, large specific surface area, uniform size, and easy surface modification, polymer nanospheres are widely used in standard metrology, biomedicine, and...

AI Technical Summary

Problems solved by technology

[0004] The special properties of nanomaterials are closely related to the morphology of nanoparticles, and no other new shape aramid nanomaterials have been seen so far. In order to make full use of the excellent properties of aramid fibers and prepare high-performance composite materials, the research and development process is simple, low cost, and suitable for large New aramid nanomaterials for large-scale industrial use are urgently needed by the market

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