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...

Examples

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...

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...

Examples

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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