A kind of nano energy-containing composite fiber and its preparation method

Abstract

The invention discloses a nano energy-containing composite fiber and a preparation method thereof, wherein the preparation method comprises the following steps: (1) adding NC, GAP and nano-TATB into an organic solvent to prepare a spinning solution of 8-20 wt%, Among them, the mass ratio of nano-TATB to the total mass of NC and GAP is 1:1~6; (2) Electrospinning is performed using electrospinning equipment, the spinning voltage is set at 12~18kv, and the extrusion speed is 1~6mL / h , The receiving distance is 6-20cm, and the relative humidity of the environment is 35-60%. The benefits of the present invention are: (1) replace part of NC with GAP, reduce the viscosity of spinning solution, not only help to increase the loading capacity of nano-explosive particles, improve combustion and explosion properties such as fiber heat release and detonation heat, but also It is beneficial to reduce the spinning voltage and spinning difficulty, improve the safety of the experiment, and ensure the safety of the experimenters and the laboratory; (2) The prepared NC / GAP / nano‑TATB fiber has high porosity, large aspect ratio and uniformity High, providing a large number of loading sites for energetic nanoparticles, which can effectively prevent the agglomeration of energetic nanoparticles.

Description

technical field [0001] The invention relates to a nano energy-containing composite fiber and a preparation method thereof, in particular to a nano-triaminotrinitrobenzene (nano-TATB) loaded with nitrocellulose (NC) and polyazidoglycidyl ether (GAP) as carriers. ) nano energy-containing composite fiber and a preparation method thereof, belonging to the technical field of energy-containing material preparation. Background technique [0002] The contact distance between the components of the nano-energy composite fiber is short, the heat transfer and mass transfer efficiency of the fiber is high, the critical diameter is small, the energy release rate of the system is high, the heat release is large, the combustion performance and explosion performance are excellent, and the friction and impact Low sensitivity, low long-pulse shock wave sensitivity, high short-pulse shock wave sensitivity, and can effectively avoid the agglomeration of single nano-explosive particles, so it can...

AI Technical Summary

Problems solved by technology

However, this technology chooses nitrocellulose as a carrier, and the viscosity of a separate nitrocellulose solution is relatively high, which will bring great difficulties to the spinning process, and at the same time make the fiber diameter distribution uneven, resulting in the preparation of fiber nano explosive particles. low volume

In addition, when preparing fibers based on pure nitrocellulose, a high spinning voltage is required. When the spinning voltage exceeds 20kv, electric sparks will be generated at the needle of the syringe, which will bring great safety hazards

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