CN107503174A - A kind of coloured superhigh molecular weight polyethylene fibers and preparation method thereof - Google Patents
A kind of coloured superhigh molecular weight polyethylene fibers and preparation method thereof Download PDFInfo
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- CN107503174A CN107503174A CN201710839814.8A CN201710839814A CN107503174A CN 107503174 A CN107503174 A CN 107503174A CN 201710839814 A CN201710839814 A CN 201710839814A CN 107503174 A CN107503174 A CN 107503174A
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- molecular weight
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/0032—Determining dye recipes and dyeing parameters; Colour matching or monitoring
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/16—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using dispersed, e.g. acetate, dyestuffs
- D06P1/18—Azo dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/16—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using dispersed, e.g. acetate, dyestuffs
- D06P1/20—Anthraquinone dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/60—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing polyethers
- D06P1/613—Polyethers without nitrogen
- D06P1/6131—Addition products of hydroxyl groups-containing compounds with oxiranes
- D06P1/6133—Addition products of hydroxyl groups-containing compounds with oxiranes from araliphatic or aliphatic alcohols
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/79—Polyolefins
- D06P3/794—Polyolefins using dispersed dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
- D06P5/10—After-treatment with compounds containing metal
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Coloring (AREA)
Abstract
A kind of coloured superhigh molecular weight polyethylene fibers and preparation method thereof, the preparation method includes：(1) ultrasound prepares dye liquor；The mass percent that dispersant accounts for dye liquor is respectively 0.05%~0.5%, and the mass percent that dyestuff accounts for fiber is 0.5%~10%, bath raio 1: (10~100)；Dyestuff is the high hydrophobicity azo disperse dye or anthraquinone type disperse dye that dipole moment is less than 5.0Debye；(2) dye liquor and ultra-high molecular weight polyethylene extracting fiber are placed in overflow dyeing machine, dyeing temperature is 90 DEG C~120 DEG C, and dyeing time is 15min~150min, and dye liquor pH value is 4~9, and the extracting fiber for completing dyeing carries out reduction cleaning, drying；(3) dry ultra-high molecular weight polyethylene colored extracting fiber is subjected to stretching orientation, obtains the coloured superhigh molecular weight polyethylene fibers of finished product.This method simplicity is easy to control, and the coloured superhigh molecular weight polyethylene fibers of preparation have high Apparent Depth, color fastness and strength retention.
Description
Technical field
The present invention relates to a kind of colouring processing method of ultra-high molecular weight polyethylene extracting fiber, belong to the dye of textile material
Color technical field.
Background technology
Ultra-high molecular weight polyethylene (UHMWPE) fiber, it is one of three big high performance fibre material of the world.Since the advent of the world
With good characteristics such as its high intensity, high-modulus, low-density, abrasion-resistant, cut resistant, in military project national defence, aviation and navigation numerous areas
Play an important role, with expansion of its application field to civil area, exploitation, the development gesture of coloured UHMWPE fibers is must
OK.However, because ultra-high molecular weight polyethylene has, molecular structure is regular, symmetrical, nonpolar chain structure and extended-chain configuration,
The features such as chemical inertness, high hydrophobic and high-crystallinity, make superhigh molecular weight polyethylene fibers pole be not easy to react with dyestuff and
Set；The fusing point of superhigh molecular weight polyethylene fibers is relatively low simultaneously, and with the raising of processing temperature, fiber modulus and intensity are notable
Decline, 150 DEG C can melt.Exactly superhigh molecular weight polyethylene fibers are extremely hard to dye, and limit opening up for its application field
It is wide.
Original liquid coloring use is wider in the prior art.Original liquid coloring is to colour gel spinning liquid before spinning, Ran Houfang
Silk obtains coloured UHMWPE fibers.In patent CN 101886295 A, CN 103572397 A, CN 101718003 A, CN
102199805 A, CN 103866416 A, CN 103572397 A all disclose the processing method about original liquid coloring.It is but former
Pollution of the liquid dyeing to coloring system during processing is larger, is wasted time and energy when changing color, it is difficult to meet market pair
The Protean demand of fabric color, and improve production cost.
CN 103711007A, CN 102953186 are all disclosed using dyestuff to superhigh molecular weight polyethylene fibers finished product
Silk is dyed, and in order to improve dye-uptake, is dyed using about 130 DEG C of insulations, and through this technique, the intensity and modulus of fiber is inevitable
It is significantly impaired, weaken advantage and characteristic of the ultrahigh molecular weight (UHMW) polyethylene fiber as high-strength high-modulus fibre.
Also reach height-oriented without drawing-off for ultrahigh molecular weight (UHMW) polyethylene as-spun fibre molecular structure, dyestuff is easier to
The characteristic dyed during into fiber free volume, in the prior art, the A of patent CN 103422195 disclose to be carried with dyeing
Body, dyestuff and ooze emulsion and be configured to dye liquor, the dye liquor stir in heating and put into feed kettle, is cooled to room temperature, standing.
Dye liquor is controlled with the ultra-high molecular weight polyethylene as-spun fibre under appropriate velocity spray to tension-free state by measuring pump
On coloured, multistep hot-stretch is carried out to the tow of coloring again by the process such as post-processing, drying.Received in the method using orchid
Free and easy dyestuff, the dyestuff, which is that 1: 2 type is acid, contain mordant dye, and dye stuff, which is complexed, that heavy metal ion, structure are larger, and contains sulfonic acid
The hydrophilic radicals such as sodium, it is big with super-hydrophobicity polyethylene fibrous structures difference simple in construction, and dye is not referred in the patent
The test result for obtaining color depth and specific various color fastness of color.The A of patent CN 103015233 are disclosed will be dried
UHMWPE as-spun fibres are put into high pressure dyeing cabin, and carbon dioxide then is pressurized into supercriticality, by the shape
The carbon dioxide of state is squeezed into dyestuff groove, with supercritical fluid dissolving dye, is then sent in high pressure dyeing cabin fine with UHMWPE
Dimension contact dyeing, the fiber after dyeing carry out super times drawing-off, winding again, and supercritical dyeing methods reaction condition is harsher, temperature
Or the fine difference of pressure can all influence the upper dye situation of final products, thus can not large-scale application.
The content of the invention
The present invention is in view of the above-mentioned problems, provide a kind of colouring processing method of ultra-high molecular weight polyethylene extracting fiber.
It is methylene (- CH first against ultra-high molecular weight polyethylene2-CH2-) connected macromolecular chain chemical constitution, according to " phase patibhaga-nimitta
Hold " principle, screening is with superelevation hydrophobicity, the dyestuff of good linear peace face symmetrical structure, such as methyl yellow, Sudan red III；
Secondly for superhigh molecular weight polyethylene fibers after drawing by high temperature, macromolecular structure highly crystalline, orientation the characteristics of, this hair
It is bright using ultra-high molecular weight polyethylene extracting fiber as dyeing target, it is contaminated in the case where extracting silk tension-free state, dyed
Because selected dyestuff is the small molecule dyes of specific structure in journey, be advantageous to dye molecule and enter fiber free volume portion
Divide and combined with fiber, the ultra-high molecular weight polyethylene extracting fiber after dyeing carries out hot gas spring again, and final obtain has high table
See the coloured superhigh molecular weight polyethylene fibers of depth.Colouring method of the present invention is relatively simple easy to control, can obtain having height
The good coloured superhigh molecular weight polyethylene fibers of Apparent Depth, color fastness.
To achieve the above object, the present invention takes following technical scheme：
A kind of preparation method of coloured superhigh molecular weight polyethylene fibers, comprises the following steps：
(1) by dispersant and dyestuff input water, ultrasound prepares dye liquor；The mass percent that dispersant accounts for dye liquor is respectively
0.05%~0.5%, the mass percent that dyestuff accounts for fiber is 0.5%~10%, bath raio 1：(10~100)；The dyestuff is
Dipole moment is less than 5.0Debye high hydrophobicity azo disperse dye or anthraquinone type disperse dye；
(2) dye liquor that step (1) obtains and ultra-high molecular weight polyethylene extracting fiber are placed in overflow dyeing machine, dyeing temperature
For 90 DEG C~120 DEG C, dyeing time is 15min~150min, and dye liquor pH value is 4~9, and the extracting fiber for completing dyeing is gone back
Original cleaning, dry；
(3) the ultra-high molecular weight polyethylene colored extracting fiber for the drying for obtaining step (2) carries out stretching orientation, obtains
The coloured superhigh molecular weight polyethylene fibers of finished product.
Preparation method as described above, it is preferable that the ultra-high molecular weight polyethylene extracting fiber is prepared in frozen glue method
In the technique of superhigh molecular weight polyethylene fibers, xylene extraction, drying steps are completed, and the fibre of not heated drafting step
Fiber products.
Preparation method as described above, it is preferable that the dyestuff be methyl yellow, ethyl Huang, Sudan red 1, Sudan red III,
Sudan IV, sudan red 7B, tonyred B, oil red O and/or the Sudan indigo plant II.
Preparation method as described above, it is preferable that the condition that the step (1) ultrasound prepares dye liquor is：Dye liquor 20~
Ultrasonic 20min~40min under the conditions of 70 DEG C.
Preparation method as described above, it is preferable that the dispersant is selected from AEO (AEO-9), 12
Sodium alkyl sulfate, sodium metnylene bis-naphthalene sulfonate (NNO), Dispersant MF, lignin, APES (NP-10), nonyl
Phenol polyethenoxy ether (NP-4) or didodecyldimethylammbromide bromide (DDAB).
Preparation method as described above, it is preferable that the bath raio of the step (1) is 1: (30~50)；The step (2)
Dyeing temperature is 100 DEG C~105 DEG C, and dyeing time is 20min~30min, and dye liquor pH value is 6~8.
Preparation method as described above, it is preferable that the reduction cleaning condition of the step (2) be naoh concentration 1~
2g/L, 1~2g/L of concentration of sodium bisulphite, 80 DEG C~100 DEG C of temperature, reduction cleaning 10min~30min.
Preparation method as described above, it is preferable that 80 DEG C of reduction cleaning temperature in the step (2), reduction cleaning time
20min。
Preparation method as described above, it is preferable that step (3) heat stretching process be one-level drawing-off, two level drawing-off or
Three-level drawing-off, 100 DEG C~135 DEG C of hot-stretch temperature, drawing-off general times are 1.5~2.4 times.
Preparation method as described above, it is preferable that described one-level drawing temperature is 105 DEG C~135 DEG C, and draft ratio is
1.9 again；The two level drawing temperature is followed successively by 135 DEG C, 130 DEG C, and the total multiplying power of drawing-off is 2.1 times；Described three-level drawing temperature
135 DEG C, 130 DEG C, 125 DEG C are followed successively by, the total multiplying power of drawing-off is 2.3 times.
On the other hand, the present invention provides a kind of coloured superhigh molecular weight polyethylene fibers, and it is using side as described above
Prepared by method.
The beneficial effects of the present invention are：
1. preparation method not only simple production process, the repeatability of the coloured superhigh molecular weight polyethylene fibers of the present invention
By force, and strength retention of the ultra-high molecular weight polyethylene extracting fiber in dyeing course is high.
2. there is high Apparent Depth using the coloured superhigh molecular weight polyethylene fibers obtained by the preparation method of the present invention, and
Color fastness is high, and every color fastness meets actual requirement up to more than 3 grades after testing, can be long-term use of.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are only exemplary, and
Any restrictions are not formed to the scope of the present invention.
The ultra-high molecular weight polyethylene extracting fiber used in following examples is the limited public affairs of Beijing wire high-performance fiber
Department's production, molecular weight 4,000,000.
Embodiment 1 prepares yellow superhigh molecular weight polyethylene fibers
1st, staining procedure, yellow ultra-high molecular weight polyethylene extracting fiber is prepared
At ambient temperature, by AEO (AEO-9), dyestuff methyl yellow (AlfaAesar (China) chemistry
Co., Ltd) respectively in mass ratio 0.3%, 3% input water in prepare dye bath, by dye bath in 50 DEG C of ultrasonic cleaning equipment
Ultrasonic 30min, treat that dye liquor is uniformly dispersed, cooling and standings are stand-by to room temperature.In mass ratio 100: 1 by dye liquor and supra polymer to be contaminated
Weight northylen extracting fiber is placed in yarn package dyeing machine, and 2 DEG C/min is warming up to 100 DEG C, dyes 20min at this temperature, so
After cool to 80 DEG C, at a temperature of this, in the reduction cleaning liquid containing 2g/L sodium hydroxides and 2g/L sodium hydrogensulfites
20min is cleaned, room temperature lucifuge is dried, you can obtain the ultra-high molecular weight polyethylene extracting fiber of yellow, its property indices is detailed
It is shown in Table 1.
2nd, hot-stretch step, yellow superhigh molecular weight polyethylene fibers are prepared
The yellow ultra-high molecular weight polyethylene extracting fiber that step 1 is obtained passes through under the conditions of 130 DEG C, 135 DEG C successively
Two level drawing-off, 2.1 times of total draft is final to obtain yellow superhigh molecular weight polyethylene fibers, and its property indices refers to table 1.
Fibre property after the yellow ultra-high molecular weight polyethylene extracting fiber of table 1 and two level drawing-off
Embodiment 2 prepares blue superhigh molecular weight polyethylene fibers
1st, staining procedure, blue ultra-high molecular weight polyethylene extracting fiber is prepared
At ambient temperature, by AEO (AEO-9), dyestuff the Sudan indigo plant II, (AlfaAesar (China) is changed
Learn Co., Ltd) respectively in mass ratio 0.3%, 3% input water in prepare dye bath, by ultrasonic cleaning equipment of the dye bath at 50 DEG C
Middle ultrasonic 30min, treats that dye liquor is uniformly dispersed, cooling and standings are stand-by to room temperature.In mass ratio 50: 1 by dye liquor and super high molecular weight
Polyethylene extracting fiber is placed in yarn package dyeing machine, and 2 DEG C/min is warming up to 100 DEG C, dyes 20min at this temperature, then
Cool to 80 DEG C, it is clear in the reduction cleaning liquid containing 2g/L sodium hydroxides and 2g/L sodium hydrogensulfites at a temperature of this
20min is washed, room temperature lucifuge is dried, you can obtain blue ultra-high molecular weight polyethylene extracting fiber, its property indices refers to table
1。
2nd, hot-stretch step, blue superhigh molecular weight polyethylene fibers are prepared
The blue ultra-high molecular weight polyethylene extracting fiber that step 1 is obtained passes through 105 DEG C of condition next stage drawing-offs 1.5
Times, blue superhigh molecular weight polyethylene fibers are finally obtained, its property indices refers to table 1.
Fibre property after the blue ultra-high molecular weight polyethylene extracting fiber of table 2 and one-level drawing-off
Claims (9)
1. a kind of preparation method of coloured superhigh molecular weight polyethylene fibers, it is characterised in that comprise the following steps：
(1) by dispersant and dyestuff input water, ultrasound prepares dye liquor；The mass percent that dispersant accounts for dye liquor is respectively
0.05%~0.5%, the mass percent that dyestuff accounts for fiber is 0.5%~10%, bath raio 1: (10~100)；The dyestuff is
Dipole moment is less than 5.0Debye high hydrophobicity azo disperse dye or anthraquinone type disperse dye；
(2) dye liquor that step (1) obtains and ultra-high molecular weight polyethylene extracting fiber are placed in overflow dyeing machine, dyeing temperature 90
DEG C~120 DEG C, dyeing time is 15min~150min, and dye liquor pH value is 4~9, and the extracting fiber for completing dyeing reduce clearly
Wash, dry；
(3) the ultra-high molecular weight polyethylene colored extracting fiber for the drying for obtaining step (2) carries out stretching orientation, obtains finished product
Coloured superhigh molecular weight polyethylene fibers.
2. preparation method according to claim 1, it is characterised in that the ultra-high molecular weight polyethylene extracting fiber be
Frozen glue method is prepared in the technique of superhigh molecular weight polyethylene fibers, completes xylene extraction, drying steps, and not heated is led
Stretch the fibre of step.
3. preparation method according to claim 1, it is characterised in that the dyestuff be methyl yellow, ethyl Huang, Sudan red 1,
Sudan red III, Sudan IV, sudan red 7B, tonyred B, oil red O and/or the Sudan indigo plant II.
4. preparation method according to claim 1, it is characterised in that the condition that the step (1) ultrasound prepares dye liquor is：
Dye liquor ultrasonic 20min~40min under the conditions of 20~70 DEG C.
5. preparation method according to claim 1, it is characterised in that the dispersant be selected from AEO,
Lauryl sodium sulfate, sodium metnylene bis-naphthalene sulfonate, Dispersant MF, lignin, APES, polyoxyethylene nonyl phenyl second
Alkene ether or didodecyldimethylammbromide bromide.
6. preparation method according to claim 1, it is characterised in that the bath raio of the step (1) is 1：(30~50)；Institute
The dyeing temperature for stating step (2) is 100 DEG C~105 DEG C, and dyeing time is 20min~30min, and dye liquor pH value is 6~8.
7. preparation method according to claim 1, it is characterised in that the reduction cleaning condition of the step (2) is hydrogen-oxygen
Change 1~2g/L of na concn, 1~2g/L of concentration of sodium bisulphite, 80 DEG C~100 DEG C of temperature, reduction cleaning 10min~30min.
8. according to the preparation method any one of claim 1-7, it is characterised in that step (3) heat stretching process
For one-level drawing-off, two level drawing-off or three-level drawing-off, 100 DEG C~135 DEG C of hot-stretch temperature, drawing-off general times are 1.5~2.4 times.
9. a kind of coloured superhigh molecular weight polyethylene fibers, it is characterised in that it is using any one of claim 1-8
Method prepare.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112195534A (en) * | 2020-09-10 | 2021-01-08 | 深圳市华远新材料有限公司 | Colored polylactic acid tow and preparation method thereof |
| CN113215821A (en) * | 2021-05-10 | 2021-08-06 | 浙江理工大学上虞工业技术研究院有限公司 | Antibacterial ultrahigh molecular weight polyethylene colored fiber and preparation method thereof |
| CN114524939A (en) * | 2022-02-21 | 2022-05-24 | 浙江理工大学绍兴柯桥研究院有限公司 | Preparation method and application of polyethylene glycol modified lignin azo dye dispersant |
| CN114737408A (en) * | 2022-03-17 | 2022-07-12 | 南通大学 | Preparation device and method of low-temperature normal-pressure ultrahigh molecular weight polyethylene dyed fiber |
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| CN102587060A (en) * | 2012-03-26 | 2012-07-18 | 江苏锵尼玛新材料有限公司 | Production method for ultra-high molecular weight colored polyethylene fibers |
| CN103422195A (en) * | 2013-08-08 | 2013-12-04 | 黑龙江金源仑特种纤维有限公司 | Preparation method of colored ultrahigh molecular weight polyethylene fiber |
| CN103590128A (en) * | 2013-11-05 | 2014-02-19 | 东华大学 | Preparation method of colored polyethylene fiber with ultrahigh relative molecular mass |
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2017
- 2017-09-15 CN CN201710839814.8A patent/CN107503174B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587060A (en) * | 2012-03-26 | 2012-07-18 | 江苏锵尼玛新材料有限公司 | Production method for ultra-high molecular weight colored polyethylene fibers |
| CN103422195A (en) * | 2013-08-08 | 2013-12-04 | 黑龙江金源仑特种纤维有限公司 | Preparation method of colored ultrahigh molecular weight polyethylene fiber |
| CN103590128A (en) * | 2013-11-05 | 2014-02-19 | 东华大学 | Preparation method of colored polyethylene fiber with ultrahigh relative molecular mass |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112195534A (en) * | 2020-09-10 | 2021-01-08 | 深圳市华远新材料有限公司 | Colored polylactic acid tow and preparation method thereof |
| CN113215821A (en) * | 2021-05-10 | 2021-08-06 | 浙江理工大学上虞工业技术研究院有限公司 | Antibacterial ultrahigh molecular weight polyethylene colored fiber and preparation method thereof |
| CN114524939A (en) * | 2022-02-21 | 2022-05-24 | 浙江理工大学绍兴柯桥研究院有限公司 | Preparation method and application of polyethylene glycol modified lignin azo dye dispersant |
| CN114737408A (en) * | 2022-03-17 | 2022-07-12 | 南通大学 | Preparation device and method of low-temperature normal-pressure ultrahigh molecular weight polyethylene dyed fiber |
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