Preparation method of high-performance carbon nanotube fiber

A carbon nanotube fiber, carbon nanotube technology, applied in the chemical characteristics of fibers, textiles and papermaking, yarn and other directions, can solve the problem that carbon tubes cannot be well oriented, the wet spinning process is complicated, and the mechanical stability of fibers Insufficient and other problems, to achieve the effect of superior mechanical properties, simple and convenient method, and avoid high cost

Active Publication Date: 2011-02-09
SUZHOU CREATIVE CARBON NANOTECH
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Problems solved by technology

[0007] Wet spinning, the method is to mix carbon nanotube powder and polymer into a dispersion, and then solidify into fibers through a coagulation bath during the extrusion process, but the wet spinning operation process is relatively complicated and contains carbon The amount is low, and the mechanical stability of the fiber is not enoug

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  • Preparation method of high-performance carbon nanotube fiber
  • Preparation method of high-performance carbon nanotube fiber
  • Preparation method of high-performance carbon nanotube fiber

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Embodiment Construction

[0036] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and a preferred embodiment.

[0037] The purpose of this embodiment is in order to produce high-performance carbon nanotube / polyimide composite fiber, and its technical idea utilizes polymer molecule to improve the interfacial shear modulus of carbon nanotube, thereby improves the mechanics of carbon nanotube fiber performance.

[0038] The carbon nanotube array that can be spun as the operation object in the present embodiment, the carbon source that this carbon nanotube array grows can be ethylene or acetylene, and the polymer source adopts finished product polyamic acid / N-methylpyrrolidone solution ( available directly from the manufacturer).

[0039] Such as Figure 1~5 As shown, the preparation process of carbon nanotube / polyimide composite fiber in the present embodiment comprises the following steps:

[0040] 1. Get the spinnable carbon...

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Abstract

The invention relates to a preparation method of a high-performance carbon nanotube fiber, which comprises the following specific steps of: drawing a carbon nanotube film from a spinning carbon nanotube array; then, immersing the carbon nanotube film in a thermosetting polyamic acid/N-methyl pyrrolidone solution, and twisting to form a carbon nanotube/polyamic acid composite fiber; subsequently, curing the carbon nanotube/polyamic acid composite fiber so that polyamic acid in the composite fiber forms polyimide with a net type crosslinking structure; and finally preparing the carbon nanotube/polyimide composite fiber. The invention has the advantages of simple and easy process, low cost and easy realization of large-scale production; moreover, the prepared carbon nanotube composite fiber has excellent mechanical performance, the strength can reach 2.06 GPa, the tenacity is superior to that of carbon fiber, and the conducting property is maintained unchanged as compared with that of pure carbon nanotube fiber; meanwhile, the carbon nanotube composite fiber also has the operability of common yarn, so that the requirements on subsequent treatment processes of stretching, stranding, weaving and the like can be satisfied.

Description

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Claims

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Application Information

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Owner SUZHOU CREATIVE CARBON NANOTECH
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