CN107299530A - A kind of aramid fiber surface modified method - Google Patents
A kind of aramid fiber surface modified method Download PDFInfo
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- CN107299530A CN107299530A CN201710599787.1A CN201710599787A CN107299530A CN 107299530 A CN107299530 A CN 107299530A CN 201710599787 A CN201710599787 A CN 201710599787A CN 107299530 A CN107299530 A CN 107299530A
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- aramid fiber
- fiber surface
- surface modified
- modified method
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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
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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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
- D06M11/07—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 halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
- D06M11/11—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 halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
- D06M11/13—Ammonium halides or halides 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
- 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
- D06M13/144—Alcohols; Metal alcoholates
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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 kind of aramid fiber surface modified method, step includes：A, aramid fiber is placed on to Ultrasonic Heating in LiCl/ ethanol solutions handled, then clean to be put into drying box and dry, obtain A product；B, in aqueous dopamine solution add Tris reagents make solution ph be 8 10, obtain B product；C, A product are put into B product, after placing 24 36 hours, further take out cleaning and be put into drying box and dry, produce modification of aramid fiber.A kind of aramid fiber surface modified method provided by the present invention.The present invention has the advantages that effect is obvious, simple to operate, pollution is small and cost is low.
Description
Technical field
The present invention relates to the method for fiber surface modification, particularly a kind of aramid fiber surface modified method.
Background technology
Aramid fiber is a kind of with high intensity, high-modulus, good heat endurance, the high property of the low excellent properties of density
Can fibrous material.Its full name is aromatic polyamide fibre, and it is divided into ortho position, meta and 3 kinds of class of contraposition.Aramid fiber is because of it
Unique rigid structure, high intensity, good toughness and heat endurance can effectively strengthen elastomeric material, can apply to wheel
In the mechanical rubber goods such as tire, sebific duct, adhesive tape, cable and sealing gasket.Meanwhile, it has good wear-resisting, corrosion resistance and absolutely
Hot property, available for the work clothes for making inflammable and explosive environment, high-temperature insulation material.
Aramid fiber is due to its higher crystallinity and the effect of phenyl ring steric hindrance so that fiber surface is smooth, active official
Can group less, reactivity it is low, its poor adhesion with most of macromolecule matrixes.So, the boundary of aramid fiber and matrix material
Face interaction is poor so that the application of aramid fiber is restricted, it is impossible to give full play to the excellent performance of aramid fiber.
The method of current aramid fiber surface modification is mainly the modification of ultrasonic wave dipping, plasma modification, surface grafting
Modified, surface etch is modified.Ultrasonic wave impregnates method of modifying mainly for the preparation of the immersing glue process of composite, fine for aramid fiber
The surface modification effect of dimension is limited；Plasma modification method has strict demand, complex operation to equipment, and its modified effect has
Degradation phenomena；Surface graft modification and surface etch are modified, and are chemical modifications, and its modifying process complex operation, generation pollution are big.
Therefore, there is DeGrain, complex operation, pollute big, cost height in existing aramid fiber surface modified method
The problems such as.
The content of the invention
It is an object of the present invention to provide a kind of aramid fiber surface modified method.The present invention have effect substantially, operation
Simply, small and low cost advantage is polluted.
Technical scheme：A kind of aramid fiber surface modified method, step includes：
A, aramid fiber is placed in LiCl/ ethanol solutions, after Ultrasonic Heating processing, cleaned with cleaning fluid, be nothing to cleaning fluid
Color, places into drying box and dries, obtain A product；
B, in the aqueous dopamine solution that concentration is 2-2.5g/L add Tris reagents make solution ph be 8-10, obtain B product；
C, A product are put into B product, take out, cleaned with cleaning fluid after placing 24-36 hour, be colourless to cleaning fluid, place into dry
Dried in dry case, produce modification of aramid fiber.
In foregoing aramid fiber surface modified method, the aramid fiber in the step a is poly- paraphenylene terephthalamide to benzene
Diamines or poly.
In foregoing aramid fiber surface modified method, the aramid fiber is PPTA or poly-
The long fibre or chopped strand of mpd-i.
In foregoing aramid fiber surface modified method, in the step a in LiCl/ ethanol solutions LiCl mass fraction
For 3-5%.
In foregoing aramid fiber surface modified method, the temperature that Ultrasonic Heating is handled in the step a is 60-80 DEG C,
Time is 2-4 hours.
In foregoing aramid fiber surface modified method, in the step a and c, cleaning fluid is deionized water.
In foregoing aramid fiber surface modified method, the drying temperature of drying box is 50-60 DEG C in the step a.
In foregoing aramid fiber surface modified method, dopamine is Dopamine hydrochloride in the step b.
In foregoing aramid fiber surface modified method, Tris reagents are trishydroxymethylaminomethanes in the step b.
In foregoing aramid fiber surface modified method, drying box drying temperature is 50-60 DEG C in the step c.
It is compared with the prior art, the present invention handles aramid fiber by using LiCl/ ethanol solutions Ultrasonic Heating, increases fiber
Surface roughness；Then it is washed with deionized water only, then dries；Again by the aramid fiber after drying with aqueous dopamine solution
Reason, one layer is formed than more uniform poly-dopamine coating in aramid fiber surface；And because the increase of fiber surface roughness, promote
Enter poly-dopamine coating and be deposited on fiber surface, make poly-dopamine coating finer and close, allow aramid fiber that there is excellent surface to live
Property, substantially, whole operation process is simple, the produced pollution is small and cost is low for modified effect.
Brief description of the drawings
Fig. 1 is the long stapled SEM for the modified PPTA that the embodiment of the present invention 1 is obtained；
Fig. 2 is the SEM of the chopped strand for the modified PPTA that the embodiment of the present invention 3 is obtained.
Embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples, but be not intended as to the present invention limit according to
According to.
A kind of aramid fiber surface modified method, step is as follows：
A, aramid fiber is placed in LiCl/ ethanol solutions, after Ultrasonic Heating processing, cleaned with cleaning fluid, be nothing to cleaning fluid
Color, places into drying box and dries, obtain A product；Described aramid fiber is PPTA or poly- isophthalic diformazan
Acyl m-phenylene diamine (MPD)；Preferably the long fibre of PPTA or poly or be chopped fibre
Dimension.LiCl mass fraction is 3-5% in the LiCl/ ethanol solutions.The temperature of the Ultrasonic Heating processing is 60-80 DEG C, when
Between be 2-4 hours.The cleaning fluid is deionized water.The drying temperature of the drying box is 50-60 DEG C.
B, in the aqueous dopamine solution that concentration is 2-2.5g/L add Tris reagents make solution ph be 8-10, obtain B product；
The dopamine is Dopamine hydrochloride.The Tris reagents are trishydroxymethylaminomethanes.
C, A product are put into B product, take out, cleaned with cleaning fluid after placing 24-36 hour, be colourless to cleaning fluid, then put
Enter in drying box and dry, produce modification of aramid fiber.The cleaning fluid is deionized water.The drying box drying temperature is 50-
60℃。
Embodiment 1
A kind of aramid fiber surface modified method, step is as follows：
A, the round-bottomed flask that the long fibre of 5g PPTAs is placed on to the LiCl/ ethanol solutions equipped with 200mL
In, condensation reflux unit is installed, after being handled with Ultrasound Instrument Ultrasonic Heating, cleaned with cleaning fluid, is colourless to cleaning fluid, places into
Dried in drying box, obtain A product.LiCl mass fraction is 3% in the LiCl/ ethanol solutions.The temperature of the Ultrasonic Heating processing
Spend for 60 DEG C, the time is 2 hours.The cleaning fluid is deionized water.The drying temperature of the drying box is 50 DEG C.
B, in the aqueous dopamine solution that 400mL concentration is 2g/L add Tris reagents make solution ph be 8, obtain B product；Institute
Dopamine is stated for Dopamine hydrochloride.The Tris reagents are trishydroxymethylaminomethanes.
C, A product are put into the beaker of the B product equipped with 200mL, are taken out after being placed 24 hours in unlimited environment, with clear
Washing lotion is cleaned, and is colourless to cleaning fluid, is placed into drying box and is dried, and obtains the long fine of modified PPTA
Dimension.The cleaning fluid is deionized water.The drying box drying temperature is 50 DEG C.
Fig. 1 is the long stapled SEM for the modified PPTA that embodiment 1 is obtained, poly- paraphenylene terephthalamide
The long fibre surface of p-phenylenediamine is roughening, deposited a strata dopamine coating.
Embodiment 2
A kind of aramid fiber surface modified method, step is as follows：
A, the round-bottomed flask that the long fibre of 5g polies is placed on to the LiCl/ ethanol solutions equipped with 200mL
In, condensation reflux unit is installed, after being handled with Ultrasound Instrument Ultrasonic Heating, cleaned with cleaning fluid, is colourless to cleaning fluid, places into
Dried in drying box, obtain A product.LiCl mass fraction is 3% in the LiCl/ ethanol solutions.The temperature of the Ultrasonic Heating processing
Spend for 60 DEG C, the time is 2 hours.The cleaning fluid is deionized water.The drying temperature of the drying box is 50 DEG C.
B, in the aqueous dopamine solution that 400mL concentration is 2g/L add Tris reagents make solution ph be 8, obtain B product；Institute
Dopamine is stated for Dopamine hydrochloride.The Tris reagents are trishydroxymethylaminomethanes.
C, A product are put into the beaker of the B product equipped with 200mL, are taken out after being placed 24 hours in unlimited environment, with clear
Washing lotion is cleaned, and is colourless to cleaning fluid, is placed into drying box and is dried, and obtains the long fine of modified poly
Dimension.The cleaning fluid is deionized water.The drying box drying temperature is 50 DEG C.
The long fibre surface of poly is roughening, deposited a strata dopamine coating, fiber table
Face activity increase, modified effect is obvious.
Embodiment 3
A kind of aramid fiber surface modified method, step is as follows：
A, the round bottom that the chopped strand of 5g PPTAs is placed on to the LiCl/ ethanol solutions equipped with 200mL burn
In bottle, condensation reflux unit is installed, after being handled with Ultrasound Instrument Ultrasonic Heating, cleaned with cleaning fluid, is colourless to cleaning fluid, then put
Enter in drying box and dry, obtain A product.LiCl mass fraction is 5% in the LiCl/ ethanol solutions.The Ultrasonic Heating processing
Temperature is 80 DEG C, and the time is 4 hours.The cleaning fluid is deionized water.The drying temperature of the drying box is 60 DEG C.
B, in the aqueous dopamine solution that 400mL concentration is 2.5g/L add Tris reagents make solution ph be 10, obtain B
Product；The dopamine is Dopamine hydrochloride.The Tris reagents are trishydroxymethylaminomethanes.
C, A product are put into the beaker of the B product equipped with 200mL, are taken out after being placed 36 hours in unlimited environment, with clear
Washing lotion is cleaned, and is colourless to cleaning fluid, is placed into drying box and is dried, obtains the chopped fibre of modified PPTA
Dimension.The cleaning fluid is deionized water.The drying box drying temperature is 60 DEG C.
Fig. 2 is the SEM of the chopped strand for the modified PPTA that embodiment 3 is obtained, poly- terephthaldehyde
The chopped strand surface of acyl p-phenylenediamine is roughening, deposited a strata dopamine coating.
Embodiment 4
A kind of aramid fiber surface modified method, step is as follows：
A, the round bottom that the chopped strand of 5g polies is placed on to the LiCl/ ethanol solutions equipped with 200mL burn
In bottle, condensation reflux unit is installed, after being handled with Ultrasound Instrument Ultrasonic Heating, cleaned with cleaning fluid, is colourless to cleaning fluid, then put
Enter in drying box and dry, obtain A product.LiCl mass fraction is 5% in the LiCl/ ethanol solutions.The Ultrasonic Heating processing
Temperature is 80 DEG C, and the time is 4 hours.The cleaning fluid is deionized water.The drying temperature of the drying box is 60 DEG C.
B, in the aqueous dopamine solution that 400mL concentration is 2.5g/L add Tris reagents make solution ph be 10, obtain B
Product；The dopamine is Dopamine hydrochloride.The Tris reagents are trishydroxymethylaminomethanes.
C, A product are put into the beaker of the B product equipped with 200mL, are taken out after being placed 36 hours in unlimited environment, with clear
Washing lotion is cleaned, and is colourless to cleaning fluid, is placed into drying box and is dried, obtains the chopped fibre of modified poly
Dimension.The cleaning fluid is deionized water.The drying box drying temperature is 60 DEG C.
The chopped strand surface of poly is roughening, deposited a strata dopamine coating, fiber
Surface-active increase, modified effect is obvious.
Claims (10)
1. a kind of aramid fiber surface modified method, it is characterised in that：Step includes：
A, aramid fiber is placed in LiCl/ ethanol solutions, after Ultrasonic Heating processing, cleaned with cleaning fluid, be nothing to cleaning fluid
Color, places into drying box and dries, obtain A product；
B, in the aqueous dopamine solution that concentration is 2-2.5g/L add Tris reagents make solution ph be 8-10, obtain B product；
C, A product are put into B product, take out, cleaned with cleaning fluid after placing 24-36 hour, be colourless to cleaning fluid, place into dry
Dried in dry case, produce modification of aramid fiber.
2. aramid fiber surface modified method according to claim 1, it is characterised in that：Aramid fiber in the step a is fine
Dimension, is PPTA or poly.
3. aramid fiber surface modified method according to claim 2, it is characterised in that：The aramid fiber, is poly- pair
Phenylene terepthalamide or the long fibre or chopped strand of poly.
4. aramid fiber surface modified method according to claim 1, it is characterised in that：LiCl/ ethanol in the step a
LiCl mass fraction is 3-5% in solution.
5. aramid fiber surface modified method according to claim 1, it is characterised in that：Ultrasonic Heating in the step a
The temperature of processing is 60-80 DEG C, and the time is 2-4 hours.
6. aramid fiber surface modified method according to claim 1, it is characterised in that：In the step a and c, cleaning
Liquid is deionized water.
7. aramid fiber surface modified method according to claim 1, it is characterised in that：Drying box in the step a
Drying temperature is 50-60 DEG C.
8. aramid fiber surface modified method according to claim 1, it is characterised in that：Dopamine is in the step b
Dopamine hydrochloride.
9. aramid fiber surface modified method according to claim 1, it is characterised in that：Tris reagents in the step b
It is trishydroxymethylaminomethane.
10. aramid fiber surface modified method according to claim 1, it is characterised in that：Drying box dries in the step c
Dry temperature is 50-60 DEG C.
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| CN201710599787.1A CN107299530A (en) | 2017-07-21 | 2017-07-21 | A kind of aramid fiber surface modified method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108822543A (en) * | 2018-05-16 | 2018-11-16 | 西北工业大学 | A kind of cyanate resin base wave-penetrating composite material and preparation method thereof |
| CN109180934A (en) * | 2018-08-03 | 2019-01-11 | 武汉理工大学 | A kind of preparation method of solvent-free meta-aramid fluid |
| CN110219173A (en) * | 2019-07-05 | 2019-09-10 | 黄河三角洲京博化工研究院有限公司 | A kind of strong acidproof modification of aramid fiber and preparation method thereof |
| CN110820350A (en) * | 2019-12-03 | 2020-02-21 | 陕西科技大学 | Method for improving mechanical properties of aramid nano-fiber through covalent bond crosslinking |
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| CN104047160A (en) * | 2014-06-17 | 2014-09-17 | 哈尔滨工业大学 | Method for grafting modified aramid fiber on surface of graphene oxide |
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2017
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047160A (en) * | 2014-06-17 | 2014-09-17 | 哈尔滨工业大学 | Method for grafting modified aramid fiber on surface of graphene oxide |
Non-Patent Citations (2)
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| 李诚: ""芳纶纤维表面络合改性研究"", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108822543A (en) * | 2018-05-16 | 2018-11-16 | 西北工业大学 | A kind of cyanate resin base wave-penetrating composite material and preparation method thereof |
| CN109180934A (en) * | 2018-08-03 | 2019-01-11 | 武汉理工大学 | A kind of preparation method of solvent-free meta-aramid fluid |
| CN109180934B (en) * | 2018-08-03 | 2020-10-30 | 武汉理工大学 | Preparation method of solvent-free meta-aramid fluid |
| CN110219173A (en) * | 2019-07-05 | 2019-09-10 | 黄河三角洲京博化工研究院有限公司 | A kind of strong acidproof modification of aramid fiber and preparation method thereof |
| CN110820350A (en) * | 2019-12-03 | 2020-02-21 | 陕西科技大学 | Method for improving mechanical properties of aramid nano-fiber through covalent bond crosslinking |
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