CN109796007B - Preparation method of micro-nano biomass fiber and carbon nanotube mixed suspension - Google Patents
Preparation method of micro-nano biomass fiber and carbon nanotube mixed suspension Download PDFInfo
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- CN109796007B CN109796007B CN201910121823.2A CN201910121823A CN109796007B CN 109796007 B CN109796007 B CN 109796007B CN 201910121823 A CN201910121823 A CN 201910121823A CN 109796007 B CN109796007 B CN 109796007B
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- 239000000835 fiber Substances 0.000 title claims abstract description 97
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 239000002041 carbon nanotube Substances 0.000 title claims abstract description 92
- 229910021393 carbon nanotube Inorganic materials 0.000 title claims abstract description 92
- 239000000725 suspension Substances 0.000 title claims abstract description 87
- 239000002028 Biomass Substances 0.000 title claims abstract description 81
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 47
- 239000006185 dispersion Substances 0.000 claims abstract description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 54
- 239000011259 mixed solution Substances 0.000 claims description 24
- 238000010008 shearing Methods 0.000 claims description 20
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 18
- 239000007864 aqueous solution Substances 0.000 claims description 18
- 239000004202 carbamide Substances 0.000 claims description 18
- 239000006228 supernatant Substances 0.000 claims description 18
- 240000008564 Boehmeria nivea Species 0.000 claims description 15
- 244000198134 Agave sisalana Species 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- -1 alcohol compound Chemical class 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 230000007935 neutral effect Effects 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 7
- 239000002023 wood Substances 0.000 claims description 7
- 230000008014 freezing Effects 0.000 claims description 6
- 238000007710 freezing Methods 0.000 claims description 6
- 238000007873 sieving Methods 0.000 claims description 6
- 238000000265 homogenisation Methods 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 206010042674 Swelling Diseases 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 230000008961 swelling Effects 0.000 claims description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims 3
- 239000000463 material Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 11
- 239000002114 nanocomposite Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 231100000956 nontoxicity Toxicity 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 description 10
- 241000196324 Embryophyta Species 0.000 description 6
- 238000007865 diluting Methods 0.000 description 6
- 239000002270 dispersing agent Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 238000007864 suspending Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 229920002488 Hemicellulose Polymers 0.000 description 3
- 229920002522 Wood fibre Polymers 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 3
- 238000010298 pulverizing process Methods 0.000 description 3
- 239000002025 wood fiber Substances 0.000 description 3
- 235000011624 Agave sisalana Nutrition 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005411 Van der Waals force Methods 0.000 description 1
- 239000011825 aerospace material Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229920000704 biodegradable plastic Polymers 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- GBMDVOWEEQVZKZ-UHFFFAOYSA-N methanol;hydrate Chemical compound O.OC GBMDVOWEEQVZKZ-UHFFFAOYSA-N 0.000 description 1
- 229920000052 poly(p-xylylene) Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000000527 sonication Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Abstract
The invention discloses a preparation method of a micro-nano biomass fiber and carbon nanotube mixed suspension, which comprises the steps of preparing biomass fiber powder into a micro-nano biomass fiber suspension, adding carbon nanotubes into the micro-nano biomass fiber suspension for dispersion, and preparing the micro-nano biomass fiber and carbon nanotube mixed suspension; the mixed suspension can be kept stable for a long time, provides a material base for the preparation of the nano composite material, and provides a green low-cost technology which has simple process, no toxicity and convenient realization for the preparation of high-performance and functionalized nano composite materials.
Description
Technical Field
The invention relates to the field of biomass fiber micro-nano treatment and preparation of a carbon nano tube dispersion suspension, in particular to a preparation process of a micro-nano biomass fiber and carbon nano tube mixed suspension.
Background
The carbon nano tube is a nano material with very high strength and modulus, also has electromagnetic property, and has wide application prospect in the fields of aerospace materials, automobile materials and electronic devices. Like other nano materials, the carbon nano tube has the characteristics of easy agglomeration and difficult dispersion, which brings difficulty for preparing related materials by applying the carbon nano tube in a large scale, and the uniform dispersion of the carbon nano tube is a main problem restricting the batch application of the carbon nano tube; since the discovery of carbon nanotubes, how to solve the problem of uniform dispersion of carbon nanotubes has become a core issue considered by many researchers.
Currently, the dispersion of carbon nanotubes is mainly achieved by the following three ways. Firstly, the van der waals force between the carbon nanotubes is destroyed through the strong mechanical shearing action, so as to achieve the dispersion effect. The carbon nano tube dispersion liquid obtained by the method has short stabilization time, and the carbon nano tube can be reunited after a certain time; secondly, the carbon nano tube is promoted to be dispersed by a specific dispersing agent, the dispersing effect of the method is good, but the application occasion of the carbon nano tube is limited due to the introduction of the dispersing agent into the carbon nano tube dispersing liquid; and thirdly, the carbon nano tube is chemically modified, functional groups such as carboxyl, hydroxyl and the like are introduced on the surface of the carbon nano tube, and the dispersibility of the carbon nano tube in a relevant solvent is increased through the function of the functional groups, so that the method has a limited effect on increasing the dispersibility.
The biomass fiber is widely present in plants on the earth and is an inexhaustible green resource with wide sources. The biomass fiber mainly comprises three substances, namely cellulose, hemicellulose and lignin, wherein the cellulose and the hemicellulose are natural macromolecules containing a large number of hydroxyl functional groups and are main raw materials of paper and bioplastic; according to the invention, by utilizing the characteristic that the biomass fiber contains a large amount of cellulose and hemicellulose, a micro-nano biomass fiber suspension is prepared by adopting a method of combining chemical treatment and mechanical shearing, and the suspension is used as a dispersing agent of the carbon nano tube to prepare a micro-nano biomass fiber and carbon nano tube mixed suspension, so that a material basis is provided for preparing a polymer-based composite material taking the biomass fiber and the carbon nano tube as a reinforcing phase. The invention is characterized in that the suspension of the biomass fiber subjected to micro-nano treatment is used as a dispersant of the carbon nano tube, and the difference from other dispersants is that the biomass fiber can be used as a component of a material and the performance of the carbon nano tube cannot be influenced.
Disclosure of Invention
The invention provides a preparation method of a micro-nano biomass fiber and carbon nanotube mixed suspension, which has the advantages of simple process, low manufacturing cost, greenness, no pollution and the like, and has important practical significance for preparing high-performance green polymer composite materials.
The preparation method of the mixed suspension of the micro-nano biomass fibers and the carbon nano tubes comprises the following steps:
(1) mechanically crushing the biomass fibers, and sieving to obtain biomass fiber powder with the particle size of less than 200 mu m;
(2) swelling the biomass fiber powder obtained in the step (1) to obtain a biomass fiber powder mixed solution;
(3) placing the biomass fiber powder mixed solution obtained in the step (2) at a temperature of between-3 and-12 ℃ for 10 to 40 min;
(4) carrying out high-speed shearing treatment on the mixed solution subjected to freezing treatment in the step (3), and then carrying out grinding and shearing treatment on the mixed solution to obtain a micro-nano biomass fiber suspension;
(5) treating the micro-nano biomass fiber suspension liquid obtained in the step (4) with deionized water or a water solution of a low molecular alcohol compound to obtain a suspension liquid with a neutral pH value, standing, and taking out a supernatant liquid for later use;
the treatment with deionized water or a low molecular alcohol compound aqueous solution means diluting the micro-nano biomass fiber suspension by 2-3 times with the deionized water or the low molecular alcohol compound aqueous solution, then filtering, diluting filter residues with the deionized water or the low molecular alcohol compound aqueous solution, and filtering until the suspension is neutral;
(6) adding the carbon nano tubes into the supernatant obtained in the step (5), and then performing dispersion treatment until the carbon nano tubes are uniformly dispersed to obtain a uniformly dispersed carbon nano tube suspension;
(7) and (3) adding the carbon nanotube suspension obtained in the step (6) into the suspension left after the supernatant is taken out in the step (5), and performing dispersion treatment until the carbon nanotubes are uniformly dispersed to obtain a micro-nano biomass fiber and carbon nanotube mixed suspension, wherein the mass fraction of the carbon nanotubes in the mixed suspension is 0.01-0.6%, and the mass fraction of the micro-nano biomass fiber in the mixed suspension is 0.1-6%.
The swelling treatment in the step (2) is to prepare a mixed aqueous solution of sodium hydroxide and urea, wherein the mass fraction of the sodium hydroxide is 3-12%, and the mass fraction of the urea is 1.5-7%; and then adding the biomass fiber powder into a mixed aqueous solution of sodium hydroxide and urea for treatment for 30-60 min to prepare a biomass fiber powder mixed solution, wherein the mass fraction of the biomass fiber powder is 0.1-6%.
The high-speed shearing treatment is carried out for 3-5 min at the rotating speed of a high-speed shearing machine of 2000-12000 r/min.
The water solution of the low molecular alcohol compound is methanol water solution or ethanol water solution.
The biomass fiber powder can be wood powder, coffee shell powder, sisal hemp powder, ramie powder and other plant fiber powder.
The micro-nano biomass fiber suspension contains nano biomass fibers and micro biomass fibers.
The abrasive shearing process can be accomplished in a variety of ways, such as, but not limited to, the following: grinding with a grinder, homogenizing with a homogenizer, etc.
The dispersion treatment can be achieved in various ways, such as but not limited to the following: sonication, mechanical agitation, and the like.
The method has the advantages and the technical effects that:
the invention provides a preparation method of a carbon nano tube and biomass fiber mixed suspension, which has the advantages of simple process, low manufacturing cost and no pollution, the mixed suspension prepared by the method can be kept stable for a long time, and the biomass fiber is not only a dispersion medium of the carbon nano tube, but also a green material, thereby providing a material base for the preparation of the nano composite material, simplifying the preparation process, and providing a green low-cost technology which has the advantages of simple process, no toxicity and convenient realization for the preparation of high-performance and functionalized nano composite materials.
Detailed Description
The present invention is further illustrated by the following examples, but the scope of the invention is not limited to the above-described examples.
Example 1: preparing a micro-nano biomass fiber and carbon nanotube mixed suspension by taking sisal fibers and carbon nanotubes as raw materials, and comprising the following steps:
(1) pulverizing sisal fiber in a plant pulverizer, and sieving with a 100-mesh sieve to obtain sisal powder with particle size of less than 200 μm;
(2) preparing a mixed aqueous solution of sodium hydroxide and urea, wherein the mass fraction of the sodium hydroxide is 4% and the mass fraction of the urea is 2%;
(3) adding the sisal hemp powder obtained in the step (1) into a mixed aqueous solution of sodium hydroxide and urea for treatment for 40min to obtain a biomass fiber powder mixed solution, wherein the mass fraction of the biomass fiber powder is 3%;
(4) placing the biomass fiber powder mixed solution obtained in the step (3) in an environment with the temperature of-12 ℃ for 20 min;
(5) putting the mixed solution subjected to freezing treatment in the step (4) into a high-speed shearing machine, carrying out high-speed shearing and mixing at 2000r/min for 3min, then putting the mixed solution into a planetary ball mill for grinding, wherein the rotating speed of the ball mill is 500r/min, and the grinding time is 4 h; obtaining micro-nano sisal fiber suspension;
(6) diluting the micro-nano sisal fiber suspension obtained in the step (5) by 2 times with deionized water, filtering, re-suspending, filtering and washing until a suspension with a neutral pH value is obtained, standing, and taking out the supernatant for later use;
(6) adding the carbon nano tubes into the supernatant obtained in the step (5), and then performing dispersion treatment until the carbon nano tubes are uniformly dispersed to obtain a uniformly dispersed carbon nano tube suspension;
(7) and (3) adding the carbon nanotube suspension obtained in the step (6) into the suspension left after the supernatant is taken out in the step (5), and performing dispersion treatment until the carbon nanotubes are uniformly dispersed to obtain a micro-nano biomass fiber and carbon nanotube mixed suspension, wherein the mass fraction of the carbon nanotubes in the mixed suspension is 0.05%, and the mass fraction of the micro-nano biomass fiber in the mixed suspension is 3%.
According to observation, the prepared micro-nano biomass fiber and carbon nanotube mixed suspension has good stability and can be uniformly dispersed after standing for 24 hours at room temperature.
Example 2: preparing a micro-nano biomass fiber and carbon nanotube mixed suspension by taking wood powder and carbon nanotubes as raw materials, and comprising the following steps:
(1) crushing wood fiber in a plant crusher, and then sieving with a 100-mesh sieve to obtain wood powder with the particle size of less than 200 mu m;
(2) preparing a mixed aqueous solution of sodium hydroxide and urea, wherein the mass fraction of the sodium hydroxide is 8%, and the mass fraction of the urea is 5%;
(3) adding the wood powder obtained in the step (1) into a mixed aqueous solution of sodium hydroxide and urea for treatment for 50min to obtain a biomass fiber powder mixed solution, wherein the mass fraction of the biomass fiber powder is 0.5%;
(4) placing the biomass fiber powder mixed solution obtained in the step (3) in an environment with the temperature of-6 ℃ for 30 min;
(5) placing the mixed solution subjected to freezing treatment in the step (4) in a high-speed shearing machine for high-speed shearing and mixing for 5min at the speed of 500r/min, and then placing the mixed solution in a planetary ball mill for grinding, wherein the rotating speed of the ball mill is 800r/min, and the grinding time is 3 h; obtaining micro-nano size wood fiber suspension;
(6) diluting the micro-nano wood fiber suspension obtained in the step (5) by 3 times with ethanol water solution, filtering, re-suspending, filtering and washing until a suspension with a neutral pH value is obtained, standing, and taking out the supernatant for later use;
(6) adding the carbon nano tubes into the supernatant obtained in the step (5), and then performing dispersion treatment until the carbon nano tubes are uniformly dispersed to obtain a uniformly dispersed carbon nano tube suspension;
(7) and (3) adding the carbon nanotube suspension obtained in the step (6) into the suspension left after the supernatant is taken out in the step (5), and performing dispersion treatment until the carbon nanotubes are uniformly dispersed to obtain a micro-nano biomass fiber and carbon nanotube mixed suspension, wherein the mass fraction of the carbon nanotubes in the mixed suspension is 0.1%, and the mass fraction of the micro-nano biomass fiber in the mixed suspension is 0.5%.
According to observation, the micro-nano wood flour fiber and the carbon nanotube suspension prepared by the embodiment have good stability and can be uniformly dispersed after standing for 24 hours at room temperature.
Example 3: preparing a micro-nano biomass fiber and carbon nano tube mixed suspension by taking ramie and carbon nano tubes as raw materials, and comprising the following steps:
(1) pulverizing ramie fibers in a plant pulverizer, and then sieving the ramie fibers with a 100-mesh sieve to obtain ramie powder with the size of less than 200 microns;
(2) preparing a mixed aqueous solution of sodium hydroxide and urea, wherein the mass fraction of the sodium hydroxide is 10%, and the mass fraction of the urea is 6%;
(3) adding the ramie powder obtained in the step (1) into a mixed aqueous solution of sodium hydroxide and urea for treatment for 60min to obtain a biomass fiber powder mixed solution, wherein the mass fraction of the biomass fiber powder is 4%;
(4) placing the biomass fiber powder mixed solution obtained in the step (3) in an environment at the temperature of minus 3 ℃ for 40 min;
(5) placing the mixed solution subjected to freezing treatment in the step (4) in a high-speed shearing machine, performing high-speed shearing and mixing for 4min at 8000r/min, and then performing homogenization treatment in a homogenizer at the homogenization pressure of 15-20 MPa to obtain a micro-nano ramie fiber suspension;
(6) diluting the micro-nano sisal fiber suspension obtained in the step (5) by 2 times with deionized water, filtering, re-suspending, filtering and washing until a suspension with a neutral pH value is obtained, standing, and taking out the supernatant for later use;
(6) adding the carbon nano tubes into the supernatant obtained in the step (5), and then performing dispersion treatment until the carbon nano tubes are uniformly dispersed to obtain a uniformly dispersed carbon nano tube suspension;
(7) and (3) adding the carbon nanotube suspension obtained in the step (6) into the suspension left after the supernatant is taken out in the step (5), and performing dispersion treatment until the carbon nanotubes are uniformly dispersed to obtain a micro-nano biomass fiber and carbon nanotube mixed suspension, wherein the mass fraction of the carbon nanotubes in the mixed suspension is 0.6%, and the mass fraction of the micro-nano biomass fiber in the mixed suspension is 4%.
According to observation, the prepared micro-nano ramie fiber and carbon nanotube suspension has good stability and can be uniformly dispersed after standing for 72 hours at room temperature.
Example 4: preparing a micro-nano biomass fiber and carbon nano tube mixed ethanol suspension by taking ramie and carbon nano tubes as raw materials, and comprising the following steps:
(1) pulverizing ramie fibers in a plant pulverizer, and then sieving the ramie fibers with a 100-mesh sieve to obtain ramie powder with the size of less than 200 microns;
(2) preparing a mixed aqueous solution of sodium hydroxide and urea, wherein the mass fraction of the sodium hydroxide is 12%, and the mass fraction of the urea is 3%;
(3) adding the ramie powder obtained in the step (1) into a mixed aqueous solution of sodium hydroxide and urea for treatment for 45min to obtain a biomass fiber powder mixed solution, wherein the mass fraction of the biomass fiber powder is 2%;
(4) placing the biomass fiber powder mixed solution obtained in the step (3) in an environment with the temperature of minus 5 ℃ for 25 min;
(5) placing the mixed solution subjected to freezing treatment in the step (4) into a high-speed shearing machine to perform high-speed shearing and mixing at 10000r/min, and then performing homogenization treatment in a homogenizer at the homogenization pressure of 15-20 MPa to obtain a micro-nano ramie fiber suspension;
(6) diluting the micro-nano sisal fiber suspension obtained in the step (5) by 2 times with an ethanol water solution, filtering, re-suspending, filtering and washing until a suspension with a neutral pH value is obtained, standing, and taking out the supernatant for later use;
(6) adding the carbon nano tubes into the supernatant obtained in the step (5), and then performing dispersion treatment until the carbon nano tubes are uniformly dispersed to obtain a uniformly dispersed carbon nano tube suspension;
(7) and (3) adding the carbon nanotube suspension obtained in the step (6) into the suspension left after the supernatant is taken out in the step (5), and performing dispersion treatment until the carbon nanotubes are uniformly dispersed to obtain a micro-nano biomass fiber and carbon nanotube mixed suspension, wherein the mass fraction of the carbon nanotubes in the mixed suspension is 0.2%, and the mass fraction of the micro-nano biomass fiber in the mixed suspension is 2%.
According to observation, the micro-nano wood flour fiber and the carbon nanotube suspension prepared by the embodiment have good stability and can be uniformly dispersed after standing for 72 hours at room temperature.
Claims (5)
1. A preparation method of a micro-nano biomass fiber and carbon nanotube mixed suspension is characterized by comprising the following steps:
(1) mechanically crushing the biomass fibers, and sieving to obtain biomass fiber powder with the particle size of less than 200 mu m;
(2) swelling the biomass fiber powder obtained in the step (1) to obtain a biomass fiber powder mixed solution;
(3) placing the biomass fiber powder mixed solution obtained in the step (2) at a temperature of between-3 and-12 ℃ for 10 to 40 min;
(4) carrying out high-speed shearing treatment on the mixed solution subjected to freezing treatment in the step (3), and then carrying out grinding and shearing treatment on the mixed solution to obtain a micro-nano biomass fiber suspension;
the grinding and shearing treatment is grinding by a grinder or homogenization by a homogenizer;
(5) treating the micro-nano biomass fiber suspension liquid obtained in the step (4) with deionized water or a water solution of a low molecular alcohol compound to obtain a suspension liquid with a neutral pH value, standing, and taking out a supernatant liquid for later use;
(6) adding the carbon nano tubes into the supernatant obtained in the step (5), and then performing dispersion treatment until the carbon nano tubes are uniformly dispersed to obtain a uniformly dispersed carbon nano tube suspension;
(7) and (3) adding the carbon nanotube suspension obtained in the step (6) into the suspension left after the supernatant is taken out in the step (5), and performing dispersion treatment until the carbon nanotubes are uniformly dispersed to obtain a micro-nano biomass fiber and carbon nanotube mixed suspension, wherein the mass fraction of the carbon nanotubes in the mixed suspension is 0.01-0.6%, and the mass fraction of the micro-nano biomass fiber in the mixed suspension is 0.1-6%.
2. The preparation method of the micro-nano biomass fiber and carbon nanotube mixed suspension according to claim 1, which is characterized by comprising the following steps: in the step (2), the swelling treatment is to prepare a mixed aqueous solution of sodium hydroxide and urea, wherein the mass fraction of the sodium hydroxide is 3-12%, and the mass fraction of the urea is 1.5-7%; and then adding the biomass fiber powder into a mixed aqueous solution of sodium hydroxide and urea for treatment for 30-60 min to prepare a biomass fiber powder mixed solution, wherein the mass fraction of the biomass fiber powder is 0.1-6%.
3. The preparation method of the micro-nano biomass fiber and carbon nanotube mixed suspension according to claim 1, which is characterized by comprising the following steps: the high-speed shearing treatment is carried out for 3-5 min at the rotating speed of a high-speed shearing machine of 2000-12000 r/min.
4. The preparation method of the micro-nano biomass fiber and carbon nanotube mixed suspension according to claim 1, which is characterized by comprising the following steps: the aqueous solution of the low molecular alcohol compound is methanol aqueous solution or ethanol aqueous solution.
5. The preparation method of the micro-nano biomass fiber and carbon nanotube mixed suspension according to claim 1, which is characterized by comprising the following steps: the biomass fiber powder is wood powder, coffee shell powder, sisal powder or ramie powder.
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| CN110452306A (en) * | 2019-08-23 | 2019-11-15 | 长沙师范学院 | A kind of modified biomass fiber and preparation method thereof and device |
| CN112591736B (en) * | 2020-12-16 | 2022-12-20 | 四川大学 | Method for dispersing carbon nano tube with assistance of cellulose |
| CN115364732A (en) * | 2022-08-01 | 2022-11-22 | 沈阳富创精密设备股份有限公司 | Uniform treatment method for micro-nano material suspension |
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