CN110846895A - Preparation method of stably dispersed aramid nano-fibers - Google Patents
Preparation method of stably dispersed aramid nano-fibers Download PDFInfo
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- CN110846895A CN110846895A CN201911221770.8A CN201911221770A CN110846895A CN 110846895 A CN110846895 A CN 110846895A CN 201911221770 A CN201911221770 A CN 201911221770A CN 110846895 A CN110846895 A CN 110846895A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
- D06M13/236—Esters of carboxylic acids; Esters of carbonic acid containing halogen atoms
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic System
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/34—Polyamides
- D06M2101/36—Aromatic polyamides
Abstract
The invention discloses a preparation method of stably dispersed aramid nano-fibers. The method comprises the following steps: (1) stirring dimethyl sulfoxide, aramid fiber and KOH at room temperature until the solution is dark red to obtain an aramid nanofiber suspension; (2) adding ethyl bromoacetate to carry out substitution reaction on the aramid nano-fiber suspension; (3) adding deionized water to dilute and replace the aramid nano-fiber suspension, and continuously stirring; (4) carrying out suction filtration on the substituted aramid nano-fiber suspension, and drying to be absolutely dry to obtain the substituted aramid nano-fiber; (5) placing the substituted aramid nano-fiber in KOH aqueous solution for hydrolysis; (6) adding deionized water into the hydrolyzed aramid nano-fiber, and then carrying out vacuum-assisted suction filtration and drying to obtain C4H7O2-ANFh powder. The prepared aramid nano-fiber has simple preparation processSimple and stable in common solvent.
Description
Technical Field
The invention relates to the field of crossing of paper making industry and material industry, and particularly relates to a preparation method of stably dispersed aramid nano fibers.
Background
The aramid nano-fiber has excellent mechanical properties, thermal stability and the like, and can be widely applied to preparation of light high-strength materials, insulating materials and the like. However, the aramid nanofibers can only exist in the form of anions in DMSO, which greatly limits the application. To solve the problem, a method for replacing the ANF from the DMSO by adding water is proposed, and a certain result is obtained, but the size of the aramid nanofiber is increased in the replacement process, and even a part of the aramid nanofiber is reduced into a macroscopic aramid fiber, so that the superiority of the nano structure of the aramid nanofiber is greatly damaged, and therefore, a method for enabling the aramid nanofiber to exist stably is eagerly sought.
Disclosure of Invention
In order to solve the problem of poor stability of the aramid nano-fiber in the prior art, the invention provides a preparation method of the aramid nano-fiber capable of stably dispersing, and the C obtained by the method4H7O2the-ANFh powder has the characteristics of simple preparation process and the like, improves the problem of the dispersity of the aramid nano-fiber and widens the application of the aramid nano-fiber.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a preparation method of stably dispersed aramid nano-fibers comprises the following steps:
1) stirring dimethyl sulfoxide, aramid fiber and KOH at room temperature until the solution is dark red to obtain an aramid nanofiber suspension;
2) adding ethyl bromoacetate to carry out nucleophilic substitution on the aramid nano-fiber suspension;
3) adding deionized water to dilute the substituted aramid nano-fiber suspension, and continuing stirring;
4) carrying out suction filtration on the nucleophilic-substituted aramid nano-fiber suspension, and drying to be absolutely dry to obtain substituted aramid nano-fibers;
5) dissolving the dried substituted aramid nano-fiber in KOH aqueous solution for hydrolysis to obtain suspension;
6) carrying out vacuum-assisted suction filtration on the hydrolyzed aramid nano-fiber suspension, and drying to obtain C4H7O2-ANFh powder.
As a further improvement of the present invention, in step 1), the aramid nanofibers are para-chopped aramid fibers.
As a further improvement of the invention, in the step 1), the mass ratio of the aramid fiber to KOH is 1: 1.5.
As a further improvement of the invention, in the step 2), the liquid-solid ratio of the suspension to ethyl bromoacetate is 25 mL: (50-500 mg); the nucleophilic reaction time is 10-24 h.
As a further improvement of the invention, in the step 3), the adding amount of the deionized water is 3-5 times of the mass of the aramid nano-fiber suspension, and the stirring time is 10-30 min.
As a further improvement of the invention, in the step 4), the concentration of the KOH aqueous solution is 3-10 mol/L, and the hydrolysis time is 4-8 h.
As a further improvement of the invention, in the step 6), the drying treatment is carried out for 12-24 hours at 50-60 ℃.
The invention has the following advantages:
the invention selects para-aramid fiber (PPTA) and ethyl bromoacetate as raw materials. Processing the para-aramid fiber under a mixed system of dimethyl sulfoxide (DMSO) and potassium hydroxide (KOH) to obtain a para-Aramid Nanofiber (ANF) suspension; substituting ethyl bromoacetate for ANF suspension, and hydrolyzing the substituted fiber with KOH aqueous solution to obtain C4H7O2And the prepared aramid nano-fiber has the characteristics of simple preparation process and stable existence in a common solvent. Grafting ethyl acetate on aramid nano-fiber, and hydrolyzing the ethyl acetate into-CH in K OH aqueous solution3COOK, partially after addition of deionized waterThe raw material is carboxyl, so that the aramid nano-fiber which can be stably dispersed in solvents such as water, ethanol and the like is obtained, and a foundation is laid for further development and utilization of the aramid nano-fiber.
Drawings
FIG. 1: c4H7BrO2-physical map of anf (h);
FIG. 2: c4H7BrO2-FT-IR spectrum of anf (h);
FIG. 3: c4H7BrO2Solubility in different solvents of ANF (h) (representing, from left to right, pure water, C4H7BrO2-anf (h) dissolved in deionized water, ethanol, DMSO, DMF).
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention relates to a preparation method of stably dispersed aramid nano-fibers, which comprises the following steps:
(1) adding 500mLDMSO, 1.0g of aramid fiber and 1.5g of KOH into a beaker, and stirring for one week at room temperature until the solution is dark red to obtain an Aramid Nanofiber (ANF) suspension;
(2) taking 25mLANF suspension, adding ethyl bromoacetate (dosage: 50-500 mg) to carry out nucleophilic substitution reaction (time: 10-24 h);
(3) adding deionized water of which the amount is about 3-5 times that of the ANF suspension liquid after the substitution, and stirring (the time is 10-30 min);
(4) the substituted ANF suspension is filtered to obtain C4H7O2Solid ANF, vacuum drying (temperature: 30-70 ℃ C., time: 24 h);
(5) dried C4H7O2-ANF is dissolved in KOH aqueous solution (concentration: 3-10 mol/L) for hydrolysis (time: 4E ℃)8h)；
(6) Adding 10-50 mL of deionized water until hydrolysis is completed4H7O2In ANF to give C4H7O2-ANF-h；
(7) Carrying out vacuum-assisted suction filtration on the hydrolyzed aramid nano-fiber suspension, and then drying at 50-60 ℃ for 12-24 h to obtain C4H7O2-ANFh powder;
(8) c is to be4H7O2The ANFh powder was dispersed in water, ethanol, dimethyl sulfoxide (DMSO), Dimethylformamide (DMF) and tested for stability.
Example 1
(1) 500ml of mixed fibers (LDMSO), 1.0g of aramid fibers and 1.5g of KOH are added into a beaker, and stirred for one week at room temperature until the solution is dark red, so that an Aramid Nanofiber (ANF) suspension is obtained.
(2) Taking 25mLANF suspension, adding ethyl bromoacetate (dosage: 50mg) to carry out nucleophilic reaction (time: 10 h);
(3) adding deionized water of which the amount is about 3-5 times that of the ANF suspension liquid after the substitution, and stirring (time: 10 min);
(4) the substituted ANF suspension is filtered to obtain C4H7O2Solid ANF, vacuum drying (temperature: 30-70 ℃ C., time: 24 h);
(5) dried C4H7O2Dissolving ANF in NaOH aqueous solution (concentration: 3-10 mol/L, dosage: 4-8 h) for hydrolysis;
(6) adding 10-50 mL of deionized water until hydrolysis is completed4H7O2In ANF to give C4H7O2-ANFh；
(7) Carrying out vacuum-assisted suction filtration on the hydrolyzed aramid nano-fiber suspension, and then drying at 50-60 ℃ for 12-24 h to obtain C4H7O2-ANFh powder;
(8) c is to be4H7O2The ANFh powder was dispersed in water, ethanol, dimethyl sulfoxide (DMSO), Dimethylformamide (DMF) and tested for stability.
Example 2
(1) 500ml of mixed fibers (LDMSO), 1.0g of aramid fibers and 1.5g of KOH are added into a beaker, and stirred for one week at room temperature until the solution is dark red, so that an Aramid Nanofiber (ANF) suspension is obtained.
(2) Taking 25mLANF suspension, adding ethyl bromoacetate (dosage: 100mg) to carry out nucleophilic reaction (time: 24 h);
(3) adding deionized water of which the amount is about 3-5 times that of the ANF suspension liquid after the substitution, and stirring (time: 10 min);
(4) the substituted ANF suspension is filtered to obtain C4H7O2Solid ANF, vacuum drying (temperature: 30-70 ℃ C., time: 24 h);
(5) dried C4H7O2Dissolving ANF in KOH aqueous solution (concentration: 1-5 mol/L, dosage: in:) and hydrolyzing (time: 4-8 h);
(6) adding 10-50 mL of deionized water until hydrolysis is completed4H7O2In ANF to give C4H7O2-ANFh；
(7) Carrying out vacuum-assisted suction filtration on the hydrolyzed aramid nano-fiber suspension, and then drying at 50-60 ℃ for 12-24 h to obtain C4H7O2-ANFh powder;
(8) c is to be4H7O2The ANFh powder was dispersed in water, ethanol, dimethyl sulfoxide (DMSO), Dimethylformamide (DMF) and tested for stability.
Example 3
(1) 500ml of mixed fibers (LDMSO), 1.0g of aramid fibers and 1.5g of KOH are added into a beaker, and stirred for one week at room temperature until the solution is dark red, so that an Aramid Nanofiber (ANF) suspension is obtained.
(2) Taking 25mLANF suspension, adding ethyl bromoacetate (dosage: 50-500 mg) to carry out nucleophilic reaction (time: 10-24 h);
(3) adding deionized water of which the amount is about 3-5 times that of the ANF suspension liquid after the substitution, and stirring (the time is 10-30 min);
(4) the substituted ANF suspension is filtered to obtain C4H7O2-solids of ANF, vacuum dryingDrying (the temperature is 30-70 ℃, and the time is 24 hours);
(5) dried C4H7O2Dissolving ANF in KOH aqueous solution (concentration: 5mol/L, dosage: in:) and hydrolyzing (time: 4-8 h);
(6) adding 10-50 mL of deionized water until hydrolysis is completed4H7O2In ANF to give C4H7O2-ANFh；
(7) Carrying out vacuum-assisted suction filtration on the hydrolyzed aramid nano-fiber suspension, and then drying at 50-60 ℃ for 12-24 h to obtain C4H7O2-ANFh powder;
(8) c is to be4H7O2The ANFh powder was dispersed in water, ethanol, dimethyl sulfoxide (DMSO), Dimethylformamide (DMF) and tested for stability.
Example 4
(1) 500ml of mixed fibers (LDMSO), 1.0g of aramid fibers and 1.5g of KOH are added into a beaker, and stirred for one week at room temperature until the solution is dark red, so that an Aramid Nanofiber (ANF) suspension is obtained.
(2) Taking 25mLANF suspension, adding ethyl bromoacetate (dosage: 300mg) to carry out nucleophilic reaction (time: 24 h);
(3) adding deionized water of which the amount is about 3-5 times that of the ANF suspension liquid after the substitution, and stirring (time: 20 min);
(4) the substituted ANF suspension is filtered to obtain C4H7O2Solid ANF, vacuum drying (temperature: 30-70 ℃ C., time: 24 h);
(5) dried C4H7O2Dissolving ANF in KOH aqueous solution (concentration: 3mol/L, dosage: in:) and hydrolyzing (time: 4-8 h);
(6) adding 10-50 mL of deionized water until hydrolysis is completed4H7O2In ANF to give C4H7O2-ANFh；
(7) Carrying out vacuum-assisted suction filtration on the hydrolyzed aramid nano-fiber suspension, and then drying at 50-60 ℃ for 12-24 h to obtain C4H7O2-ANFh powder;
(8) c is to be4H7O2The ANFh powder was dispersed in water, ethanol, dimethyl sulfoxide (DMSO), Dimethylformamide (DMF) and tested for stability.
FIG. 1 is C prepared from example 34H7O2ANFh powder, FIG. 2 is C4H7O2Comparison of the infrared spectra of the ANFh powder and the ANF shows that the ANF has a wavelength of 3250cm-1Of (a) NH of (b)2The peak shifts to long wave and is converted into a wider and larger-OH peak, which indicates that ethyl bromoacetate is grafted, and KOH aqueous solution is hydrolyzed to successfully modify aramid nanofibers.
C prepared by the method4H7O2The ANFh dissolution behavior is shown in FIG. 3, where it can be seen that in different solvents (from left to right, pure water, C are indicated in sequence4H7BrO2ANF (h) dissolved in deionized water, ethanol, DMSO, DMF), ANF all showed excellent solubility.
Example 5
The invention relates to a preparation method of stably dispersed aramid nano-fibers, which comprises the following steps:
(1) adding 500mLDMSO, 1.0g of aramid fiber and 1.5g of KOH into a beaker, and stirring for one week at room temperature until the solution is dark red to obtain an Aramid Nanofiber (ANF) suspension;
(2) taking 25mLANF suspension, adding ethyl bromoacetate (dosage: 50mg) to carry out nucleophilic substitution reaction (time: 10 h);
(3) diluting the substituted ANF suspension with about 3 times of deionized water and stirring (time: 10 min);
(4) the substituted ANF suspension is filtered to obtain C4H7O2-solid of ANF, vacuum-dried (temperature: 30 ℃, time: 24 h);
(5) dried C4H7O2ANF was hydrolyzed in aqueous KOH (concentration: 3mol/L) (time: 4 h);
(6) add 10mL of deionized water to the hydrolyzed C4H7O2In ANF to give C4H7O2-ANF-h；
(7) Carrying out vacuum-assisted suction filtration on the hydrolyzed aramid nano-fiber suspension, and then drying at 50-60 ℃ for 12h to obtain C4H7O2-ANFh powder.
Example 6
The invention relates to a preparation method of stably dispersed aramid nano-fibers, which comprises the following steps:
(1) adding 500mLDMSO, 1.0g of aramid fiber and 1.5g of KOH into a beaker, and stirring for one week at room temperature until the solution is dark red to obtain an Aramid Nanofiber (ANF) suspension;
(2) taking 25mLANF suspension, adding ethyl bromoacetate (dosage: 500mg) to carry out nucleophilic substitution reaction (time: 24 h);
(3) diluting the substituted ANF suspension with about 5 times deionized water and stirring (time 30 min);
(4) the substituted ANF suspension is filtered to obtain C4H7O2-solid of ANF, vacuum-dried (temperature: 70 ℃, time: 24 h);
(5) dried C4H7O2ANF is hydrolyzed (time: 8h) in aqueous KOH (concentration: 10 mol/L);
(6) adding 50mL of deionized water to the hydrolyzed C4H7O2In ANF to give C4H7O2-ANF-h；
(7) Carrying out vacuum-assisted suction filtration on the hydrolyzed aramid nano-fiber suspension, and then drying at 60 ℃ for 24h to obtain C4H7O2-ANFh powder.
Example 7
The invention relates to a preparation method of stably dispersed aramid nano-fibers, which comprises the following steps:
(1) adding 500mLDMSO, 1.0g of aramid fiber and 1.5g of KOH into a beaker, and stirring for one week at room temperature until the solution is dark red to obtain an Aramid Nanofiber (ANF) suspension;
(2) taking 25mLANF suspension, adding ethyl bromoacetate (dosage: 100mg) to carry out nucleophilic substitution reaction (time: 20 h);
(3) adding deionized water of which the amount is about 3-5 times that of the ANF suspension liquid after the substitution, and stirring (time: 20 min);
(4) the substituted ANF suspension is filtered to obtain C4H7O2-solid of ANF, vacuum-dried (temperature: 50 ℃, time: 24 h);
(5) dried C4H7O2ANF was hydrolyzed in aqueous KOH (concentration: 5mol/L) (time: 6 h);
(6) adding 10-50 mL of deionized water until hydrolysis is completed4H7O2In ANF to give C4H7O2-ANF-h；
(7) Carrying out vacuum-assisted suction filtration on the hydrolyzed aramid nano-fiber suspension, and then drying at 50-60 ℃ for 18h to obtain C4H7O2-ANFh powder.
The foregoing is a more detailed description of the invention and it is not intended that the invention be limited to the specific embodiments described herein, but that various modifications, alterations, and substitutions may be made by those skilled in the art without departing from the spirit of the invention, which should be construed to fall within the scope of the invention as defined by the appended claims.
Claims (7)
1. A preparation method of stably dispersed aramid nano-fibers is characterized by comprising the following steps:
1) stirring dimethyl sulfoxide, aramid fiber and KOH at room temperature until the solution is dark red to obtain an aramid nanofiber suspension;
2) adding ethyl bromoacetate to carry out nucleophilic substitution on the aramid nano-fiber suspension;
3) adding deionized water to dilute the substituted aramid nano-fiber suspension, and continuing stirring;
4) carrying out suction filtration on the nucleophilic-substituted aramid nano-fiber suspension, and drying to be absolutely dry to obtain substituted aramid nano-fibers;
5) dissolving the dried substituted aramid nano-fiber in KOH aqueous solution for hydrolysis to obtain suspension;
6) carrying out vacuum-assisted suction filtration on the hydrolyzed aramid nano-fiber suspension, and drying to obtain C4H7O2-ANFh powder.
2. The method for preparing the stably dispersed aramid nanofibers according to claim 1, wherein in step 1), the aramid nanofibers are para-chopped aramid fibers.
3. The preparation method of the stably dispersed aramid nanofibers according to claim 1, characterized in that in step 1), the mass ratio of the aramid fibers to KOH is 1: 1.5.
4. The preparation method of the stably dispersed aramid nanofibers according to claim 1, wherein in step 2), the liquid-solid ratio of the suspension to ethyl bromoacetate is 25 mL: (50-500 mg); the nucleophilic reaction time is 10-24 h.
5. The preparation method of the stably dispersed aramid nano-fiber according to claim 1, wherein in the step 3), the addition amount of deionized water is 3-5 times of the mass of the aramid nano-fiber suspension, and the stirring time is 10-30 min.
6. The preparation method of the stably dispersed aramid nanofibers according to claim 1, characterized in that in step 4), the concentration of KOH aqueous solution is 3-10 mol/L, and the hydrolysis time is 4-8 h.
7. The preparation method of the stably dispersed aramid nanofibers according to claim 1, characterized in that in step 6), the drying treatment is performed at 50-60 ℃ for 12-24 hours.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104562650A (en) * | 2014-12-29 | 2015-04-29 | 中科院广州化学有限公司 | Preparation method of water dispersible aramid nanofiber and application thereof |
| CN108285540A (en) * | 2018-02-11 | 2018-07-17 | 陕西科技大学 | A kind of preparation method of aramid nano-fiber water-dispersed and aramid fiber nanometer paper |
| CN110055797A (en) * | 2019-04-25 | 2019-07-26 | 陕西科技大学 | A method of preparing aramid nano-fiber |
| KR102037217B1 (en) * | 2018-05-21 | 2019-10-28 | 한국화학연구원 | Method for producing aramid nano fiber dispersion |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104562650A (en) * | 2014-12-29 | 2015-04-29 | 中科院广州化学有限公司 | Preparation method of water dispersible aramid nanofiber and application thereof |
| CN108285540A (en) * | 2018-02-11 | 2018-07-17 | 陕西科技大学 | A kind of preparation method of aramid nano-fiber water-dispersed and aramid fiber nanometer paper |
| KR102037217B1 (en) * | 2018-05-21 | 2019-10-28 | 한국화학연구원 | Method for producing aramid nano fiber dispersion |
| CN110055797A (en) * | 2019-04-25 | 2019-07-26 | 陕西科技大学 | A method of preparing aramid nano-fiber |
Non-Patent Citations (1)
| Title |
|---|
| MING YANG ET AL.: ""Dispersions of Aramid Nanofibers:A New Nanoscale Building Block"", 《ACS NANO》 * |
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