Nano energy-containing composite fiber and preparation method thereof

A composite fiber and nanotechnology, applied in fiber processing, fiber chemical characteristics, cellulose/protein conjugated rayon, etc., can solve the problem of low loading of fiber nano-explosive particles, uneven fiber diameter distribution, and nitrocellulose solution viscosity. It can reduce the spinning voltage and spinning difficulty, achieve high uniformity, and improve the combustion and explosion performance.

Active Publication Date: 2019-06-28
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Nano energy-containing composite fiber and preparation method thereof
  • Nano energy-containing composite fiber and preparation method thereof
  • Nano energy-containing composite fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: prepare NC / GAP fiber

[0037] Step1: Prepare spinning solution

[0038] At room temperature, nitrocellulose and polyazide glycidyl ether were added to the organic solvent acetone to prepare a spinning solution with a mass concentration of 18%, wherein:

[0039] The mass ratio of nitrocellulose to polyazide glycidyl ether is 2:1.

[0040] Step2: Electrospinning

[0041] Electrospinning was performed using electrospinning equipment, and the ambient humidity was controlled at 50%.

[0042] First put the spinning solution into the syringe, then install the syringe on the syringe pump, then connect the needle of the syringe to the positive pole of the power supply, and finally connect the negative pole of the power supply to the receiver, and form static electricity between the needle of the syringe and the receiver field.

[0043] Adjust the receiving distance between the needle of the syringe and the receiver to 10cm, set the extrusion speed of the syring...

Embodiment 2

[0047] Embodiment 2: Preparation of NC / GAP / nano-TATB fibers

[0048] Step1: Prepare spinning solution

[0049] At room temperature, nitrocellulose, polyazide glycidyl ether and nano triaminotrinitrobenzene were added to the organic solvent acetone to prepare a spinning solution with a mass concentration of 18%, wherein:

[0050] The mass ratio of nitrocellulose to polyazide glycidyl ether is 2:1;

[0051] The mass ratio of nano triaminotrinitrobenzene to the total mass of nitrocellulose and polyazide glycidyl ether is 1:1.

[0052] Step2: Electrospinning

[0053] Electrospinning was performed using electrospinning equipment, and the ambient humidity was controlled at 50%.

[0054] First put the spinning solution into the syringe, then install the syringe on the syringe pump, then connect the needle of the syringe to the positive pole of the power supply, and finally connect the negative pole of the power supply to the receiver, and form static electricity between the needle o...

Embodiment 3

[0059] Embodiment 3: Preparation of NC / GAP / nano-TATB fibers

[0060] Step1: Prepare spinning solution

[0061] At room temperature, nitrocellulose, polyazide glycidyl ether and nano triaminotrinitrobenzene were added to the organic solvent acetone to prepare a spinning solution with a mass concentration of 18%, wherein:

[0062] The mass ratio of nitrocellulose to polyazide glycidyl ether is 1:2;

[0063] The mass ratio of nanometer triaminotrinitrobenzene to the total mass of nitrocellulose and polyazide glycidyl ether is 1:4.

[0064] Step2: Electrospinning

[0065] Electrospinning was performed using electrospinning equipment, and the ambient humidity was controlled at 50%.

[0066] First put the spinning solution into the syringe, then install the syringe on the syringe pump, then connect the needle of the syringe to the positive pole of the power supply, and finally connect the negative pole of the power supply to the receiver, and form static electricity between the n...

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Abstract

The invention discloses a nano energy-containing composite fiber and a preparation method thereof. The preparation method comprises the following steps that (1) NC, GAP and nano-TATB are added into anorganic solvent to prepare an 8-20wt% spinning solution, wherein the ratio of the mass of the nano-TATB to the total mass of the NC and the GAP is 1:(1-6); (2) electrospinning equipment is adopted for electrospinning, wherein spinning voltage is set to be 12-18 kv, the extrusion speed is set to be 1-6 mL/h, the receiving distance is set to be 6-20 cm, and the relative humidity of the environmentis set to be 35-60%. The nano energy-containing composite fiber and the preparation method thereof have the advantages that partial NC is replaced with GAP, the viscosity of the spinning solution is reduced, the increase of the loading quantity of nano explosive particles is facilitated, the combustion explosion properties such as heat release and explosion of the fiber are improved, the reductionof the spinning voltage and the spinning difficulty is better facilitated, the experiment safety is improved, and the safety of experimenters and laboratories is ensured; the prepared NC/GAP/nano-TATB fiber has high porosity, a large length-diameter ratio and high uniformity, provides a large number of loading sites for nano energy-containing particles, and can effectively prevent the agglomeration of the nano energy-containing particles.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/02D01F8/16D01F1/10D01D5/00
Inventor 王毅罗婷婷宋小兰黄浩尚菲菲
Owner ZHONGBEI UNIV
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