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A kind of preparation method of composite graphene ball for bulletproof plate

A composite graphene and graphene technology, applied in chemical instruments and methods, carbon compounds, silicon compounds, etc., can solve the problems of difficult formation of spherical structures and difficult preparation of spherical graphene, to prevent cracks, improve spherical integrity and The effect of regularization and reduction of production costs

Active Publication Date: 2021-07-09
绍兴市达冷肯生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems in the prior art, the present invention provides a method for preparing composite graphene balls used in bulletproof boards, which solves the problems that the existing spherical graphene is difficult to prepare and the spherical structure is difficult to form, and adopts the mold method to greatly improve the graphite The spherical integrity and regularization of vinyl spheres are suitable for large-scale production, which improves production efficiency and reduces production costs

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  • A kind of preparation method of composite graphene ball for bulletproof plate
  • A kind of preparation method of composite graphene ball for bulletproof plate

Examples

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Embodiment 1

[0041] A kind of preparation method for the composite graphene ball of bulletproof board, described preparation method follows the steps:

[0042] Step 1, adding graphene to absolute ethanol, then adding a dispersant and ultrasonically stirring for 10 minutes to obtain a graphene dispersion;

[0043] Step 2: Distill the graphene dispersion under reduced pressure for 30 minutes, then put it into a spherical mold, heat and solidify it for 2 hours, and obtain spherical particles;

[0044] Step 3: Gradient pressure reaction of spherical particles for 10 hours, then standing at constant pressure for 2 hours, and heating for 2 hours to obtain spherical particles of graphene;

[0045] Step 4, adding the silica sol to absolute ethanol, and ultrasonically reacting for 10 minutes to obtain dispersed silica sol;

[0046] Step 5, adding graphene spherical particles into the dispersed silica sol, reacting under reduced pressure for 20 minutes, ultrasonically reacting for 20 minutes, takin...

Embodiment 2

[0060] A kind of preparation method for the composite graphene ball of bulletproof board, described preparation method follows the steps:

[0061] Step 1, adding graphene to absolute ethanol, then adding a dispersant and ultrasonically stirring for 30 minutes to obtain a graphene dispersion;

[0062] Step 2, the graphene dispersion is distilled under reduced pressure for 50 minutes, then put into a spherical mold, heated and solidified for 4 hours to obtain spherical particles;

[0063] Step 3, the spherical particles are subjected to gradient pressurization for 15 hours, then left to stand at constant pressure for 4 hours, and heated for 3 hours to obtain spherical graphene particles;

[0064] Step 4, adding the silica sol to absolute ethanol, and ultrasonically reacting for 14 minutes to obtain dispersed silica sol;

[0065] Step 5, adding graphene spherical particles into the dispersed silica sol, reacting under reduced pressure for 40 minutes, ultrasonically reacting for ...

Embodiment 3

[0079] A kind of preparation method for the composite graphene ball of bulletproof board, described preparation method follows the steps:

[0080] Step 1, adding graphene to absolute ethanol, then adding a dispersant and ultrasonically stirring for 20 minutes to obtain a graphene dispersion;

[0081] Step 2: Distill the graphene dispersion under reduced pressure for 40 minutes, then put it into a spherical mold, heat and solidify it for 3 hours, and obtain spherical particles;

[0082] Step 3, the spherical particles are subjected to gradient pressurization for 13 hours, then left to stand at constant pressure for 3 hours, and heated for 3 hours to obtain spherical graphene particles;

[0083] Step 4, adding the silica sol to absolute ethanol, and ultrasonically reacting for 12 minutes to obtain dispersed silica sol;

[0084] Step 5, adding graphene spherical particles into the dispersed silica sol, reacting with vacuum distillation for 30 minutes, ultrasonically reacting for...

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Abstract

The invention discloses a preparation method of composite graphene balls used for bulletproof boards. Step 1, graphene is added to absolute ethanol, and then a dispersant is added and ultrasonically stirred for 10-30min to obtain a graphene dispersion; Step 2, Distill the graphene dispersion under reduced pressure for 30-50 minutes, then put it into a spherical mold, heat and solidify it for 2-4 hours to obtain spherical particles; step 3, react the spherical particles with gradient pressure for 10-15 hours, and then stand at constant pressure 2‑4h, heat reaction for 2‑3h to obtain graphene spherical particles; step 4, add silica sol to absolute ethanol, and ultrasonically react for 10‑14min to obtain dispersed silica sol; step 5, add graphene spherical particles to Disperse in silica sol, react by vacuum distillation for 20-40min, and ultrasonically react for 20-120min, take out the graphene spherical particles and dry them; step 6, put the graphene spherical particles into the spherical mold for gradient pressurization reaction for 3-5h, and release the pressure Afterwards, composite graphene spheres are obtained. The invention solves the problems that the existing spherical graphene is difficult to prepare and the spherical structure is difficult to form.

Description

technical field [0001] The invention belongs to the technical field of graphene materials, in particular to a method for preparing composite graphene balls used for bulletproof boards. Background technique [0002] Graphene is a new material with a single-layer sheet structure composed of carbon atoms, which has ultra-high electron mobility (15000cm 2 / V·s), low resistivity (10 -6 Ω cm), high specific surface area (2630m 2 / g), high thermal conductivity (5300W / m K), high mechanical strength, are widely used in biology, chemistry, physics, materials and other fields. [0003] Due to the unique flake structure of graphene, it is easy to agglomerate during actual use, which affects the specific surface area of ​​graphene and other properties. Therefore, it is necessary to assemble graphene to form a three-dimensional structure and increase its anti-stacking ability. [0004] Among the existing assembly methods, although regular spherical graphene spheres can be obtained in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/194C01B33/148
CPCC01B33/148C01P2004/80
Inventor 吴亚良
Owner 绍兴市达冷肯生物科技有限公司