CN111304773A - Easy-to-dye modified polyamide fiber - Google Patents
Easy-to-dye modified polyamide fiber Download PDFInfo
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- CN111304773A CN111304773A CN202010250885.6A CN202010250885A CN111304773A CN 111304773 A CN111304773 A CN 111304773A CN 202010250885 A CN202010250885 A CN 202010250885A CN 111304773 A CN111304773 A CN 111304773A
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- China
- Prior art keywords
- naringin
- fiber
- spinning
- polyamide fiber
- easy
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- 239000000835 fiber Substances 0.000 title claims abstract description 90
- 239000004952 Polyamide Substances 0.000 title claims abstract description 39
- 229920002647 polyamide Polymers 0.000 title claims abstract description 39
- DFPMSGMNTNDNHN-ZPHOTFPESA-N naringin Chemical compound O[C@@H]1[C@H](O)[C@@H](O)[C@H](C)O[C@H]1O[C@H]1[C@H](OC=2C=C3O[C@@H](CC(=O)C3=C(O)C=2)C=2C=CC(O)=CC=2)O[C@H](CO)[C@@H](O)[C@@H]1O DFPMSGMNTNDNHN-ZPHOTFPESA-N 0.000 claims abstract description 96
- 239000001606 7-[(2S,3R,4S,5S,6R)-4,5-dihydroxy-6-(hydroxymethyl)-3-[(2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxyoxan-2-yl]oxy-5-hydroxy-2-(4-hydroxyphenyl)chroman-4-one Substances 0.000 claims abstract description 95
- 229930019673 naringin Natural products 0.000 claims abstract description 95
- 229940052490 naringin Drugs 0.000 claims abstract description 95
- 239000000203 mixture Substances 0.000 claims abstract description 63
- 238000009987 spinning Methods 0.000 claims abstract description 54
- 238000004043 dyeing Methods 0.000 claims abstract description 42
- 239000003607 modifier Substances 0.000 claims abstract description 39
- 238000004040 coloring Methods 0.000 claims abstract description 32
- 238000002360 preparation method Methods 0.000 claims abstract description 21
- 239000008187 granular material Substances 0.000 claims abstract description 5
- 229920001778 nylon Polymers 0.000 claims description 55
- 238000000034 method Methods 0.000 claims description 34
- 239000000843 powder Substances 0.000 claims description 33
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 30
- 229920006052 Chinlon® Polymers 0.000 claims description 26
- 239000003963 antioxidant agent Substances 0.000 claims description 25
- 230000003078 antioxidant effect Effects 0.000 claims description 25
- 235000006708 antioxidants Nutrition 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 20
- 239000002270 dispersing agent Substances 0.000 claims description 19
- 239000004005 microsphere Substances 0.000 claims description 19
- 229910021536 Zeolite Inorganic materials 0.000 claims description 18
- 239000004964 aerogel Substances 0.000 claims description 18
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 18
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 18
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 18
- 238000004804 winding Methods 0.000 claims description 18
- 239000010457 zeolite Substances 0.000 claims description 18
- 239000004677 Nylon Substances 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 16
- 238000007664 blowing Methods 0.000 claims description 15
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 12
- 125000005456 glyceride group Chemical group 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 10
- 239000001509 sodium citrate Substances 0.000 claims description 10
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 10
- 239000011592 zinc chloride Substances 0.000 claims description 10
- 235000005074 zinc chloride Nutrition 0.000 claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 229910052681 coesite Inorganic materials 0.000 claims description 7
- 229910052906 cristobalite Inorganic materials 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 229910052682 stishovite Inorganic materials 0.000 claims description 7
- 229910052905 tridymite Inorganic materials 0.000 claims description 7
- KGLNDYQQXNMWCQ-GBWQQRHQSA-N (2s)-5,7-dihydroxy-2-[4-methoxy-3-[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-[[(2r,3r,4r,5r,6s)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxymethyl]oxan-2-yl]oxyphenyl]-2,3-dihydrochromen-4-one Chemical compound C([C@H]1O[C@H]([C@@H]([C@@H](O)[C@@H]1O)O)OC1=CC(=CC=C1OC)[C@H]1OC2=CC(O)=CC(O)=C2C(=O)C1)O[C@@H]1O[C@@H](C)[C@H](O)[C@@H](O)[C@H]1O KGLNDYQQXNMWCQ-GBWQQRHQSA-N 0.000 claims description 5
- FTVWIRXFELQLPI-ZDUSSCGKSA-N (S)-naringenin Chemical compound C1=CC(O)=CC=C1[C@H]1OC2=CC(O)=CC(O)=C2C(=O)C1 FTVWIRXFELQLPI-ZDUSSCGKSA-N 0.000 claims description 5
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 5
- 229930003935 flavonoid Natural products 0.000 claims description 5
- -1 flavonoid compounds Chemical class 0.000 claims description 5
- 235000017173 flavonoids Nutrition 0.000 claims description 5
- 229920003063 hydroxymethyl cellulose Polymers 0.000 claims description 5
- 229940031574 hydroxymethyl cellulose Drugs 0.000 claims description 5
- WGEYAGZBLYNDFV-UHFFFAOYSA-N naringenin Natural products C1(=O)C2=C(O)C=C(O)C=C2OC(C1)C1=CC=C(CC1)O WGEYAGZBLYNDFV-UHFFFAOYSA-N 0.000 claims description 5
- 229940117954 naringenin Drugs 0.000 claims description 5
- 235000007625 naringenin Nutrition 0.000 claims description 5
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 5
- ITCAUAYQCALGGV-XTICBAGASA-M sodium;(1r,4ar,4br,10ar)-1,4a-dimethyl-7-propan-2-yl-2,3,4,4b,5,6,10,10a-octahydrophenanthrene-1-carboxylate Chemical compound [Na+].C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C([O-])=O ITCAUAYQCALGGV-XTICBAGASA-M 0.000 claims description 5
- 230000008961 swelling Effects 0.000 claims description 5
- 230000004580 weight loss Effects 0.000 claims description 5
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- 239000013543 active substance Substances 0.000 claims description 3
- 229910010413 TiO 2 Inorganic materials 0.000 claims 2
- 238000009835 boiling Methods 0.000 description 15
- 230000000844 anti-bacterial effect Effects 0.000 description 12
- 230000008569 process Effects 0.000 description 8
- 229920002292 Nylon 6 Polymers 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 238000005303 weighing Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 241000193830 Bacillus <bacterium> Species 0.000 description 4
- 229920002302 Nylon 6,6 Polymers 0.000 description 4
- 238000007873 sieving Methods 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229920000297 Rayon Polymers 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 241000191967 Staphylococcus aureus Species 0.000 description 2
- 208000037386 Typhoid Diseases 0.000 description 2
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 2
- 208000001848 dysentery Diseases 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000011895 specific detection Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 201000008297 typhoid fever Diseases 0.000 description 2
- 239000001100 (2S)-5,7-dihydroxy-2-(3-hydroxy-4-methoxyphenyl)chroman-4-one Substances 0.000 description 1
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- QUQPHWDTPGMPEX-UHFFFAOYSA-N Hesperidine Natural products C1=C(O)C(OC)=CC=C1C1OC2=CC(OC3C(C(O)C(O)C(COC4C(C(O)C(O)C(C)O4)O)O3)O)=CC(O)=C2C(=O)C1 QUQPHWDTPGMPEX-UHFFFAOYSA-N 0.000 description 1
- 229920000571 Nylon 11 Polymers 0.000 description 1
- 229920000305 Nylon 6,10 Polymers 0.000 description 1
- 229920002334 Spandex Polymers 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- QUQPHWDTPGMPEX-UTWYECKDSA-N aurantiamarin Natural products COc1ccc(cc1O)[C@H]1CC(=O)c2c(O)cc(O[C@@H]3O[C@H](CO[C@@H]4O[C@@H](C)[C@H](O)[C@@H](O)[C@H]4O)[C@@H](O)[C@H](O)[C@H]3O)cc2O1 QUQPHWDTPGMPEX-UTWYECKDSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- APSNPMVGBGZYAJ-GLOOOPAXSA-N clematine Natural products COc1cc(ccc1O)[C@@H]2CC(=O)c3c(O)cc(O[C@@H]4O[C@H](CO[C@H]5O[C@@H](C)[C@H](O)[C@@H](O)[C@H]5O)[C@@H](O)[C@H](O)[C@H]4O)cc3O2 APSNPMVGBGZYAJ-GLOOOPAXSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- VUYDGVRIQRPHFX-UHFFFAOYSA-N hesperidin Natural products COc1cc(ccc1O)C2CC(=O)c3c(O)cc(OC4OC(COC5OC(O)C(O)C(O)C5O)C(O)C(O)C4O)cc3O2 VUYDGVRIQRPHFX-UHFFFAOYSA-N 0.000 description 1
- QUQPHWDTPGMPEX-QJBIFVCTSA-N hesperidin Chemical compound C1=C(O)C(OC)=CC=C1[C@H]1OC2=CC(O[C@H]3[C@@H]([C@@H](O)[C@H](O)[C@@H](CO[C@H]4[C@@H]([C@H](O)[C@@H](O)[C@H](C)O4)O)O3)O)=CC(O)=C2C(=O)C1 QUQPHWDTPGMPEX-QJBIFVCTSA-N 0.000 description 1
- 229940025878 hesperidin Drugs 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- ARGKVCXINMKCAZ-UHFFFAOYSA-N neohesperidine Natural products C1=C(O)C(OC)=CC=C1C1OC2=CC(OC3C(C(O)C(O)C(CO)O3)OC3C(C(O)C(O)C(C)O3)O)=CC(O)=C2C(=O)C1 ARGKVCXINMKCAZ-UHFFFAOYSA-N 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000004759 spandex Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/90—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyamides
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
Abstract
The invention discloses a dyeable modified polyamide fiber, which contains 1-5% of naringin; the preparation method of the easy-dyeing modified polyamide fiber comprises the steps of preparing a functional composition containing naringin, preparing a modified functional composition, preparing functional mother granules containing naringin and spinning; the coloring modifier is preferably added in the functional composition containing the naringin, the addition of the coloring modifier can greatly improve the dyeing performance of the prepared fiber, the dyeing grade is more than or equal to 5 grade, the dye uptake is more than or equal to 86 percent, the dyeing rate of the fiber is obviously improved, and the uneven dyeing rate of the fiber is greatly reduced.
Description
Technical Field
The invention relates to the technical field of chemical fibers, in particular to an easily dyed modified polyamide fiber.
Background
Chinlon, a known name of polyamide fiber, is a general name of chinlon fiber produced in China. The nylon is internationally called as nylon, has high strength, good wear resistance and good rebound resilience, and can be used for pure spinning and blended spinning to produce various clothes and knitwear. The main varieties are nylon 6 and nylon 66, and the physical properties of the nylon 6 and the nylon 66 are not much different. The moisture absorption and dyeing property of chinlon are better than those of terylene, and the chinlon is alkali-resistant but not acid-resistant, and the fiber strength of the chinlon can be reduced after long-term exposure to sunlight. The nylon has heat setting property, and can keep the bending deformation formed during heating. The long filament of nylon can be made into stretch yarn, and the short filament can be blended with cotton and acrylic fibre to raise its strength and elasticity.
The nylon has various varieties, including nylon 6, nylon 66, nylon 11 and nylon 610, wherein the most important nylon 66 and nylon 6 are adopted. It is widely used in industry such as cord, transmission belt, hose, rope, fishing net, etc. The nanometer nylon has the advantages of higher thermal performance, mechanical performance, fire resistance and barrier property than pure nylon, and the manufacturing cost is equivalent to that of common nylon.
In order to improve the physical and chemical properties of nylon, increase the wearing function and meet the requirements of different groups on different functional fibers, people need to modify nylon fibers, such as: an invention patent with the Chinese patent number of CN201110251788.X discloses a production method of durable ultraviolet-proof nylon-6 fiber. The ultraviolet-proof chinlon 6 fiber produced by the method of the invention contains ultraviolet screening agent nano ZnO and nano CeO2The mass fraction of the composite fiber in the nylon-6 fiber is 1% -3%, wherein the weight ratio of the nano ZnO to the nano CeO2 is 1: 2-5. The ultraviolet-proof chinlon 6 fabric produced by the method is prepared from the chinlon 6 fibers and spandex filaments. The nylon 6 fiber and the fabric have good ultraviolet-proof effect and washing resistance, and can be widely applied to ultraviolet-proof fabrics.
Although the modified or modified nylon fiber achieves better functionality in one aspect, other technical problems are inevitably caused, for example, the nylon functional fiber prepared by a similar blending method has a large amount of other components in the fiber, so that the internal stress of each chain segment of macromolecules is uneven, and the nylon functional fiber has an unstable structure, so that the shape stability of the fiber is poor, the boiling water shrinkage rate is up to 20-25%, the quality control is very unstable, the taking effect is poor, the dyeing performance is particularly easy to cause poor, the dyeing performance is easy to reduce, and the specific expression is that the dyeing rate is reduced and the dyeing unevenness is improved.
And because the amorphous area of the nylon fiber is relatively less, and the moisture absorption and moisture regain is about 4.5 percent, the wearing comfort, the electrostatic influence, the dyeing effect and the like of the nylon fiber are far inferior to those of cotton, viscose fiber and the like in the using process, so that certain influence is caused on the later application.
Therefore, the functional modified polyamide fiber is developed, has good functionality, low boiling water shrinkage, good hygroscopicity, better dyeing performance, urgent research value, good economic benefit and good industrial application potential.
Disclosure of Invention
The present inventors have conducted intensive studies to overcome the above-identified drawbacks of the prior art, and as a result, have completed the present invention after having made a great deal of creative efforts.
Specifically, the technical problems to be solved by the present invention are: provides an easy-to-dye modified nylon fiber to solve the technical problems.
In order to solve the technical problems, the technical scheme of the invention is as follows:
1. preparation of functional composition containing naringin:
the functional composition containing the naringin comprises the following raw materials: naringin, montmorillonite, zeolite powder, aerogel and porous nano-microsphere, and the composition containing naringin forms a large amount of honeycomb structures in the fiber, so that the functionality of the prepared fiber and the moisture absorption of the fiber can be greatly improved.
As an improvement, the functional composition containing the naringin is prepared from the following raw materials in parts by weight: 3-7 parts of naringin, 1-2 parts of montmorillonite, 0.5-0.9 part of zeolite powder, 0.4-0.6 part of aerogel and 0.1-0.3 part of porous nano-microsphere; the proportion of each component in the functional modifier is particularly important, and the content matching of each component in the functional composition containing the naringin is proved to be better component proportion through a plurality of tests of the inventor, so that the functional effect of the fiber is ensured, and the basic physical property of the prepared fiber is also ensured; the added functional composition enables the prepared nylon fiber to form a large amount of honeycomb structures, and the functionality and the moisture absorption of the prepared fiber are greatly improved;
the porous nano-microsphere is one or more of TiO2 or SiO 2;
the naringin is naringin also called as isohesperidin, i.e. naringenin 7-O-neohesperidin, with drying weight loss less than or equal to 0.5%, and is light yellow powder or white-like powder, belonging to flavonoid compounds;
the average particle size of the montmorillonite is 1-1.5 mu m, and the swelling degree is more than or equal to 13.5%; the zeolite powder is 50-80 meshes;
the aerogel is silicon dioxide powder with the specific surface area of 1000-2The porosity is more than or equal to 90 percent;
the specification of the porous nano-microsphere is 100-500 nm; the raw materials are all purchased in the market, and the raw materials with the specifications are more favorable for the production of the invention;
as an improvement, the functional composition containing the naringin is obtained by adopting the following preparation method: weighing montmorillonite, zeolite powder, aerogel and porous nanometer microsphere, adding naringin, adding into a pulverizer, stirring at a speed of 20-30rad/s, and sieving with 10000 mesh sieve to obtain the functional composition containing naringin.
2. Preparing a modified functional composition: adding coloring modifier into the functional composition containing naringin to prepare modified functional composition; the addition amount of the coloring modifier is 3-5% of the mass of the functional modifier; the coloring modifier comprises sodium citrate, zinc chloride and citric acid fatty glyceride; the mass ratio of the sodium citrate to the zinc chloride to the citric acid fatty glyceride in the coloring modifier is 3-5:1-2: 10-15; the addition of the coloring modifier can greatly improve the dyeing property of the prepared fiber, improve the dyeing rate of the fiber and reduce the uneven dyeing rate of the fiber.
The method for adding the coloring modifier into the functional composition containing the naringin comprises the steps of mixing the prepared functional composition containing the naringin and the coloring modifier according to the mass ratio, adding deionized water at 70-80 ℃, stirring, grinding by using a ball mill until a stable and uniform solution appears, evaporating water to obtain solid particles, and grinding the solid particles into powder of 0.5-1 mu m to obtain the modified functional composition.
3. Preparing functional master batch containing naringin:
(1) adding the chinlon slices, the antioxidant, the dispersing agent and the modified functional composition into a double-screw extruder according to the mass parts, mixing at a high speed, extruding and granulating to obtain functional master batches containing the naringin;
(2) mixing the prepared functional master batch containing the naringin with chinlon slices, and spinning to obtain the easy-dyeing modified chinlon fiber;
the amount of the functional master batch containing the naringin is 1 to 5 percent of the total weight of the fiber calculated by the naringin; since naringin is added to the fiber in the form of a modified functional composition, it is not preferable to be excessive, and when the addition amount exceeds 5%, the strength of the prepared fiber is remarkably reduced.
As an improvement, the weight ratio of the chinlon chips, the antioxidant, the dispersant and the functional composition containing the naringin is 5-10: 0.1-0.3: 0.3-0.5: 1.5-2; the nylon chips are dried in vacuum before use, the drying temperature is 100-110 ℃, and the drying time is 80-110 min; the polyamide fiber slice has the transverse shrinkage of 0.2-0.3%, the longitudinal shrinkage of 0.6-0.7%, the relative viscosity of 2.5-2.6 and the amino end group content of 50-55;
the antioxidant is antioxidant T-9228, the pH value is 5-7, the content of active substances is 99.5%, and the CAS number is 154862-43-8;
the dispersing agent consists of 5-10 parts by weight of hydroxymethyl cellulose, 1-5 parts by weight of sodium abietate, 5-10 parts by weight of BYK-358, 5-10 parts by weight of BYK-410 and 10-50 parts by weight of polyethylene oxide.
4. Spinning:
the spinning is carried out by adopting a three-step center method, and the method specifically comprises the following steps:
one-step spinning: the temperature of the double-screw extruder is 260-275 ℃; the spinning temperature is 275 ℃ and 280 ℃; the spinning speed is 3500-3800m/min, the winding speed is 3500-3800m/min and the draft multiple is 1.6-1.8; the winding tension is 6.2-7.8 cn/dtex; the temperature of the blowing air is measured to be 20-22 ℃, and the humidity is 140 percent;
two-step central spinning: the spinning speed is 4000-; the winding tension is 4.2-5.8 cn/dtex; the blowing temperature is 25-28 ℃ and the humidity is 80-90%;
spinning in three steps: the draft multiple is 1.2-1.3; the temperature of the box body is 180 ℃ and 185 ℃, and the feeding is carried out at-2.8 to 3.2; the wheel speed is 0.35-0.4rpm, the blowing temperature is 20-23 ℃, and the humidity is 50-70%.
The spinning adopts a 'three-step center method', so that the boiling water shrinkage of the prepared nylon fiber can be obviously reduced, and the physical stability of the functional nylon fiber in a hot and wet state is improved.
The easy-to-dye modified polyamide fiber prepared by the preparation process has the breaking strength of 4.2-4.5g/dtex and the elongation at break of 80-120 percent; the boiling water shrinkage is 1.5-2.2%; the moisture regain is 13-16.5%, and the dyeing grade is more than or equal to 5 grade.
After the technical scheme is adopted, the invention has the beneficial effects that:
(1) the coloring modifier is preferably added in the functional composition containing the naringin, the addition of the coloring modifier can greatly improve the dyeing performance of the prepared fiber, the dyeing grade is more than or equal to 5 grade, the dye uptake is more than or equal to 86 percent, the dyeing rate of the fiber is obviously improved, and the uneven dyeing rate of the fiber is greatly reduced.
(2) The invention adopts a 'three-step center method' for spinning, so that the boiling water shrinkage of the prepared nylon fiber is obviously reduced, the boiling water shrinkage is 1.5-2.2%, the physical stability of the functional nylon fiber in a hot and wet state is obviously improved, and the wearability of the fiber is further improved.
(3) The functional composition containing naringin related in the process of the invention adopts a specific process to shear and mix the naringin with montmorillonite, zeolite powder, aerogel and porous nano-microspheres, thereby greatly improving the uniformity of the components, the naringin can be uniformly distributed on the porous nano-microspheres and forms a nano composite material with the montmorillonite, zeolite powder and aerogel, and the formed honeycomb-like structure greatly improves the moisture absorption and the functionality of the prepared fiber, and the moisture regain reaches 13-16.5%.
(4) The moisture regain of the nylon fiber prepared by the invention is 13-16.5%, the nylon fiber is comfortable, the moisture absorption can be comparable with that of viscose fiber, and the strength of the nylon fiber is far higher than that of the viscose fiber, so the nylon fiber has good application prospect.
(5) The naringin modified polyamide fiber adopted by the invention has 1-5% of naringin content and good antibacterial property, wherein the antibacterial rate of staphylococcus aureus is more than or equal to 99.9%, the antibacterial rate of dysentery bacillus is more than or equal to 97.6%, and the antibacterial rate of typhoid bacillus is more than or equal to 99.9%.
(6) The preparation method of the naringin modified polyamide fiber adopted by the invention has the advantages of simple process flow and strong controllability, firstly, the functional master batch containing the naringin is prepared, the uniformity and consistency of the functional composition containing the naringin in the master batch are ensured, then, the polyamide chips, the antioxidant and the dispersant are added, the addition sequence is also very critical in practice, and the antioxidant can generate mutual influence and influence the dispersibility when the content of the functional composition containing the naringin is larger, so that after long-term test, an inventor firstly prepares the functional composition containing the naringin into the functional master batch, and then further mixes the functional master batch with the mixture of the polyamide chips, the antioxidant and the dispersant, thereby ensuring the uniformity of the naringin in the naringin modified polyamide fiber.
In conclusion, the method has the advantages of simple process flow, easy control and convenience for large-scale production.
Detailed Description
The invention is further illustrated by the following specific examples. The use and purpose of these exemplary embodiments are to illustrate the present invention, not to limit the actual scope of the present invention in any way, and not to limit the scope of the present invention in any way.
Example 1 a method for preparing a dyeable modified polyamide fiber, comprising the steps of:
(1) preparation of functional composition containing naringin: mixing the following raw materials in parts by weight: 5 parts of naringin, 1 part of montmorillonite, 0.7 part of zeolite powder, 0.5 part of aerogel and 0.1 part of porous nano TiO2 microsphere; weighing montmorillonite, zeolite powder, aerogel and porous nanometer TiO2 microspheres, adding naringin, adding into a pulverizer, uniformly stirring at the speed of 30rad/s, and then sieving with a 10000-mesh sieve to obtain a functional composition containing the naringin;
the naringin is naringin also called as isohesperidin, i.e. naringenin 7-O-neohesperidin, with drying weight loss less than or equal to 0.5%, and is light yellow powder or white-like powder, belonging to flavonoid compounds;
the average particle size of the montmorillonite is 1-1.5 mu m, and the swelling degree is more than or equal to 13.5%; the zeolite powder is 50-80 meshes;
the aerogel is silicon dioxide powder with the specific surface area of 1000-2The porosity is more than or equal to 90 percent;
porous nano TiO2The specification of the microsphere is 100-150 nm; the raw materials are all purchased from the market.
(2) Preparing a modified functional composition: mixing the prepared functional composition containing the naringin and a coloring modifier according to a mass ratio, adding the coloring modifier with the addition amount of 3% of the mass of the functional modifier, adding deionized water at 70 ℃ for stirring, grinding by a ball mill until a stable and uniform solution appears, evaporating water to obtain solid particles, and grinding the solid particles into powder with the particle size of about 0.5 mu m to obtain the modified functional composition;
the coloring modifier comprises sodium citrate, zinc chloride and citric acid fatty glyceride; the mass ratio of the sodium citrate to the zinc chloride to the citric acid fatty glyceride in the coloring modifier is 3:2: 10; the addition of the coloring modifier can greatly improve the dyeing property of the prepared fiber, improve the dyeing rate of the fiber and reduce the uneven dyeing rate of the fiber.
(3) Preparing functional mother granules containing naringin:
adding the chinlon slices, the antioxidant, the dispersing agent and the modified functional composition into a double-screw extruder according to the mass parts, mixing at a high speed, extruding and granulating to obtain functional master batches containing the naringin;
the weight ratio of the chinlon chips, the antioxidant, the dispersant and the modified functional composition is 5: 0.1: 0.3: 2; the polyamide chips are dried in vacuum before use, the drying temperature is 100 ℃, and the drying time is 80 min; the polyamide fiber slice has the transverse shrinkage rate of 0.3 percent, the longitudinal shrinkage rate of 0.6 percent, the relative viscosity of 2.5 to 2.6 and the amino end group content of 50 to 55;
the antioxidant is antioxidant T-9228, pH value is 5-7, content of effective substances is 99.5%, CAS number is 154862-43-8;
the dispersing agent consists of 6 parts by weight of hydroxymethyl cellulose, 1 part by weight of sodium abietate, 10 parts by weight of BYK-358, 7 parts by weight of BYK-410 and 20 parts by weight of polyethylene oxide.
(3) Mixing the prepared functional master batch containing the naringin with chinlon slices, and spinning to obtain the easy-dyeing modified chinlon fiber; wherein the amount of the functional master batch containing the naringin is 1 percent of the total weight of the fiber calculated by the naringin;
the spinning adopts a three-step center method for spinning, and specifically comprises the following steps:
one-step spinning: the temperature of the double-screw extruder is 260 ℃; the spinning temperature is 275 ℃; the spinning speed is 35000m/min, the winding speed is 35000m/min, and the draft multiple is 1.6; the winding tension is 6.2 cn/dtex; the blowing temperature is measured to be 20 ℃, and the humidity is 120%;
two-step central spinning: the speed is 40000m/min, the winding speed is 4000m/min, and the drafting multiple is 1.1; the winding tension is 4.2 cn/dtex; the blowing temperature is 25 ℃ and the humidity is 80%;
spinning in three steps: the drafting multiple is 1.2; the temperature of the box body is 180 ℃, and overfeeding is carried out to-2.8; the wheel speed is 0.35rpm, the blowing temperature is 20 ℃ and the humidity is 50%.
The spinning adopts a 'three-step center method', so that the boiling water shrinkage of the prepared nylon fiber can be obviously reduced, and the physical stability of the functional nylon fiber in a hot and wet state is improved.
Embodiment 2 a method for preparing easy-dyeing modified nylon fiber, comprising the following steps:
(1) preparation of functional composition containing naringin: mixing the following raw materials in parts by weight: 5 parts of naringin, 1 part of montmorillonite, 0.7 part of zeolite powder, 0.5 part of aerogel and 0.1 part of porous nano SiO2 microsphere; weighing montmorillonite, zeolite powder, aerogel and porous nano SiO2 microspheres, adding naringin, adding into a pulverizer, uniformly stirring at the speed of 30rad/s, and sieving with a 10000-mesh sieve to obtain a functional composition containing naringin;
the naringin is naringin also called as isohesperidin, i.e. naringenin 7-O-neohesperidin, with drying weight loss less than or equal to 0.5%, and is light yellow powder or white-like powder, belonging to flavonoid compounds;
the average particle size of the montmorillonite is 1-1.5 mu m, and the swelling degree is more than or equal to 13.5%; the zeolite powder is 50-80 meshes;
the aerogel is silicon dioxide powder with the specific surface area of 1000-2The porosity is more than or equal to 90 percent;
the porous nano SiO2The specification of the microsphere is 100-150 nm; the raw materials are all purchased from the market.
(2) Preparing a modified functional composition: mixing the prepared functional composition containing the naringin with a coloring modifier according to a mass ratio, wherein the adding amount of the coloring modifier is 5% of the mass of the functional modifier, adding deionized water at 70 ℃ for stirring, grinding by using a ball mill until a stable and uniform solution appears, evaporating water to obtain solid particles, and grinding the solid particles into powder of 0.5 mu m to obtain the modified functional composition;
the coloring modifier comprises sodium citrate, zinc chloride and citric acid fatty glyceride; the mass ratio of the sodium citrate to the zinc chloride to the citric acid fatty glyceride in the coloring modifier is 3:1: 10; the addition of the coloring modifier can greatly improve the dyeing property of the prepared fiber, improve the dyeing rate of the fiber and reduce the uneven dyeing rate of the fiber.
(3) Preparing functional mother granules containing naringin:
weighing chinlon chips, an antioxidant, a dispersant and the modified functional composition;
adding the chinlon slices, the antioxidant, the dispersing agent and the modified functional composition into a double-screw extruder according to the mass parts, mixing at a high speed, extruding and granulating to obtain functional master batches containing the naringin;
the weight ratio of the chinlon chips, the antioxidant, the dispersant and the modified functional composition is 7: 0.3: 0.3: 2; the nylon chips are dried in vacuum before use, wherein the drying temperature is 110 ℃, and the drying time is 110 min; the polyamide fiber slice has the transverse shrinkage rate of 0.23 percent, the longitudinal shrinkage rate of 0.7 percent, the relative viscosity of 2.5 to 2.6 and the amino end group content of 50 to 55;
the antioxidant is antioxidant T-9228, pH value is 5-7, content of effective substances is 99.5%, CAS number is 154862-43-8;
the dispersing agent consists of 5 parts by weight of hydroxymethyl cellulose, 1 part by weight of sodium abietate, 5 parts by weight of BYK-358, 5-10 parts by weight of BYK-410 and 30 parts by weight of polyethylene oxide.
(4) Mixing the prepared functional master batch containing the naringin with chinlon slices, and spinning to obtain the easy-dyeing modified chinlon fiber; wherein the amount of the functional master batch containing the naringin is 3 percent of the total weight of the fiber calculated by the naringin;
the spinning is carried out by adopting a three-step center method, and the method specifically comprises the following steps:
one-step spinning: the temperature of the double-screw extruder is 275 ℃; the spinning temperature is 275 ℃; the spinning speed is 3500m/min, the winding speed is 3500m/min, and the drafting multiple is 1.8; the winding tension is 7.8 cn/dtex; the blowing temperature is 22 ℃ and the humidity is 120%;
two-step central spinning: the spinning speed is 4200m/min, the winding speed is 4200m/min, and the draft multiple is 1.1; the winding tension is 5.8 cn/dtex; the blowing temperature is 25 ℃ and the humidity is 90 percent;
spinning in three steps: the drafting multiple is 1.2; the temperature of the box body is 185 ℃, and overfeeding is carried out for 3.2; the wheel speed is 0.4rpm, the blowing temperature is 20 ℃ and the humidity is 60 percent.
The spinning adopts a 'three-step center method', so that the boiling water shrinkage of the prepared nylon fiber can be obviously reduced, and the physical stability of the functional nylon fiber in a hot and wet state is improved.
Example 3 a method for preparing a dyeable modified polyamide fiber, comprising the steps of:
(1) preparation of functional composition containing naringin: mixing the following raw materials in parts by weight: 5 parts of naringin, 1 part of montmorillonite, 0.7 part of zeolite powder, 0.5 part of aerogel and 0.1 part of porous nano SiO2 microsphere; weighing montmorillonite, zeolite powder, aerogel and porous nano SiO2 microspheres, adding naringin, adding into a pulverizer, uniformly stirring at the speed of 30rad/s, and sieving with a 10000-mesh sieve to obtain a functional composition containing naringin;
the naringin is naringin also called as isohesperidin, i.e. naringenin 7-O-neohesperidin, with drying weight loss less than or equal to 0.5%, and is light yellow powder or white-like powder, belonging to flavonoid compounds;
the average particle size of the montmorillonite is 1-1.5 mu m, and the swelling degree is more than or equal to 13.5%; the zeolite powder is 50-80 meshes;
the aerogel is silicon dioxide powder with the specific surface area of 1000-2The porosity is more than or equal to 90 percent;
the porous nano SiO2The specification of the microsphere is 100-150 nm; the raw materials are all purchased from the market.
(2) Preparing a modified functional composition: mixing the prepared functional composition containing naringin and coloring modifier according to the mass ratio, adding deionized water at 70-80 ℃ for stirring, grinding by a ball mill until a stable and uniform solution appears, evaporating water to obtain solid particles, and grinding the solid particles into powder of 0.5-1 mu m to obtain the modified functional composition;
the addition amount of the coloring modifier is 3 percent of the mass of the functional modifier; the coloring modifier comprises sodium citrate, zinc chloride and citric acid fatty glyceride; the mass ratio of the sodium citrate to the zinc chloride to the citric acid fatty glyceride in the coloring modifier is 4:1: 15; the addition of the coloring modifier can greatly improve the dyeing property of the prepared fiber, improve the dyeing rate of the fiber and reduce the uneven dyeing rate of the fiber.
(3) Preparing functional mother granules containing naringin:
weighing chinlon chips, an antioxidant, a dispersant and the modified functional composition;
adding the chinlon slices, the antioxidant, the dispersing agent and the modified functional composition into a double-screw extruder according to the mass parts, mixing at a high speed, extruding and granulating to obtain functional master batches containing the naringin;
the weight ratio of the polyamide chips, the antioxidant, the dispersant and the modified functional composition is 10: 0.3: 0.5: 2; the nylon chips are dried in vacuum before use at 1110 ℃ for 80 min; the polyamide fiber slice has the transverse shrinkage of 0.2-0.3%, the longitudinal shrinkage of 0.6-0.7%, the relative viscosity of 2.5-2.6 and the amino end group content of 50-55;
the antioxidant is antioxidant T-9228, the pH value is 5-7, the content of active substances is 99.5%, and the CAS number is 154862-43-8;
the dispersing agent consists of 10 parts by weight of hydroxymethyl cellulose, 5 parts by weight of sodium abietate, 10 parts by weight of BYK-358, 10 parts by weight of BYK-410 and 50 parts by weight of polyethylene oxide.
(4) Spinning:
mixing the prepared functional master batch containing the naringin with chinlon slices, and spinning to obtain the easy-dyeing modified chinlon fiber; wherein the amount of the functional master batch containing the naringin is 5 percent of the total weight of the fiber calculated by the naringin;
the spinning is carried out by adopting a three-step center method, and the method specifically comprises the following steps:
one-step spinning: the temperature of the double-screw extruder is 275 ℃; the spinning temperature is 275 ℃; the spinning speed is 3800m/min, the winding speed is 3800m/min and the drafting multiple is 1.8; the winding tension is 7.8 cn/dtex; the blowing temperature is 22 ℃ and the humidity is 140%;
two-step central spinning: the spinning speed is 4200m/min, the winding speed is 4200m/min, and the draft multiple is 1.6; the winding tension is 5.8 cn/dtex; the blowing temperature is 25 ℃ and the humidity is 90 percent;
spinning in three steps: the drafting multiple is 1.3; the temperature of the box body is 185 ℃, and overfeeding is carried out to-3.2; the wheel speed is 0.4rpm, the blowing temperature is 23 ℃ and the humidity is 70 percent.
The spinning adopts a 'three-step center method', so that the boiling water shrinkage of the prepared nylon fiber can be obviously reduced, and the physical stability of the functional nylon fiber in a hot and wet state is improved.
The easy-to-dye modified polyamide fiber prepared by the invention has good dyeing property and lower boiling water shrinkage, and specific detection indexes are shown in Table 1
TABLE 1
As can be seen from the table 1, the easy-to-dye modified polyamide fiber prepared by the preparation process has the breaking strength of 4.2-4.5g/dtex and the elongation at break of 80-120 percent; the boiling water shrinkage is 1.5-2.2%; the moisture regain is 13-16.5%, the dyeing grade is more than or equal to 5 grade, and the dye-uptake is more than or equal to 86%; wherein the color fastness to light dyeing grade is detected according to AATCC16.3 color fastness to light, 20 hours standard.
In addition, the easy-to-dye modified polyamide fiber prepared by the invention has good antibacterial property and hygroscopicity, and specific detection indexes are shown in Table 2
TABLE 2
As can be seen from the table 2, the easy-to-dye modified polyamide fiber prepared by the invention has good hygroscopicity and antibacterial property, wherein the moisture regain is 13-16.5%; the antibacterial rate to staphylococcus aureus is more than or equal to 99.9 percent, the antibacterial rate to dysentery bacillus is more than or equal to 97.6 percent, and the antibacterial rate to typhoid bacillus is more than or equal to 99.9 percent.
In order to further verify the effect of the "colour modifier" on the relevant properties of the polyamide fibres prepared according to the invention, the applicant carried out the following comparative tests:
comparative examples 4 to 6
By adopting the preparation processes of the embodiments 1 to 3, only the preparation step of 'preparation of modified functional composition' is omitted, and under the condition that other preparation processes are not changed, the relevant indexes of the prepared nylon fiber are detected as follows:
TABLE 3
As can be seen from Table 3, when the preparation process of examples 1-3 is adopted, and the preparation step of "preparation of modified functional composition" is omitted, that is, the coloring modifier is not added, the light fastness/dyeing grade of the prepared nylon fiber is reduced to 2-3, the dye uptake is reduced to 52-55%, the dyeing performance is obviously reduced, which shows that the coloring modifier has a great influence on the dyeing performance of the nylon fiber prepared by the invention.
The invention innovatively adopts a 'three-step center method' process for spinning, so that the boiling water shrinkage of the polyamide fiber prepared by the invention is obviously reduced, the physical stability of the functional polyamide fiber in a hot and wet state is improved, and in order to verify the influence of the related process on the boiling water shrinkage of the polyamide fiber prepared by the invention, the applicant provides the following comparative tests:
comparative examples 7 to 9
The preparation process of the embodiment 1-3 is adopted, the spinning process is modified into the conventional process, namely, the preparation process with the step of one-step spinning is only adopted, and the relevant indexes of the prepared nylon fiber are detected, and the preparation process specifically comprises the following steps:
TABLE 4
As can be seen from Table 4, the spinning process of the three-step center method adopted by the invention has an important influence on the boiling water shrinkage of the prepared nylon fiber, can obviously reduce the boiling water shrinkage of the prepared nylon fiber, and improves the stability of the nylon fiber in a hot and wet state.
The naringin content of the nylon fiber prepared by the invention is 1-5%, if the naringin content is too low, the antibacterial capability of the prepared nylon fiber is lower, and the naringin is added into the nylon slices in the form of a modified functional composition, so that if the naringin content in the fiber is more than or equal to 5%, the structure of the nylon fiber is easy to break, the physical indexes such as strength and the like are obviously reduced, the applicant also carries out related tests, the specific test method is shown in comparative examples 6-10, and the detection result is shown in Table 5:
the test method comprises the following steps:
comparative examples 10 to 14 Using the method of example 2, the amount of the modified functional composition added was changed to such an amount that the weight ratio of naringin to nylon fiber was 0.6, 0.9, 6, 7, and 8, respectively, and the prepared fibers were examined for their respective indices:
TABLE 5
As can be seen from table 5, when the method of example 2 is adopted and the amount of the modified functional composition is changed to 0.6, 0.9, 6, 7 and 8, respectively, based on naringin, the antibacterial performance of the prepared fiber gradually begins to decrease when the amount of naringin is less than 1% of the mass of the nylon fiber, and particularly when the amount of naringin is less than 0.6% of the mass of the nylon fiber, the antibacterial performance is significantly decreased; when the weight of the hesperidin accounts for more than 5% of that of the nylon fiber, the physical strength of the prepared nylon fiber begins to be obviously reduced, so that the naringin added into the nylon fiber is most suitable for 1-5%.
Unless otherwise specified, the proportion, the number of parts, and the like referred to in the present invention are expressed as mass ratios.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. An easy-dyeing modified polyamide fiber is characterized in that: the nylon fiber contains 1-5% of naringin; the preparation method of the easy-dyeing modified polyamide fiber comprises the steps of preparing a functional composition containing naringin, preparing a modified functional composition, preparing functional mother granules containing naringin and spinning; the preparation method of the modified functional composition comprises the following steps: mixing the prepared functional composition containing naringin with coloring modifier according to mass ratio, adding deionized water at 70-80 ℃ for stirring, grinding by a ball mill until a stable and uniform solution appears, evaporating water to obtain solid particles, and grinding the solid particles into powder of 0.5-1 mu m.
2. The easy-to-dye modified polyamide fiber according to claim 2, characterized in that: the functional composition containing the naringin comprises the following raw materials: naringin, montmorillonite, zeolite powder, aerogel and porous nanometer TiO 2/SiO 2 microspheres.
3. The easy-to-dye modified polyamide fiber according to claim 2, characterized in that: the functional composition containing the naringin is prepared from the following raw materials in parts by weight: 3-7 parts of naringin, 1-2 parts of montmorillonite, 0.5-0.9 part of zeolite powder, 0.4-0.6 part of aerogel and 0.1-0.3 part of porous nano TiO 2/SiO 2 microspheres.
4. The easy-to-dye modified polyamide fiber according to claim 3, characterized in that: the naringin is naringin also called as isohesperidin, i.e. naringenin 7-O-neohesperidin, with drying weight loss less than or equal to 0.5%, and is light yellow powder or white-like powder, belonging to flavonoid compounds;
the average particle size of the montmorillonite is 1-1.5 mu m, and the swelling degree is more than or equal to 13.5%; the zeolite powder is 50-80 meshes;
the aerogel is silicon dioxide powder with the specific surface area of 1000-2The porosity is more than or equal to 90 percent;
the porous nano TiO2/ SiO2The microsphere specification is 100-500 nm.
5. The easy-to-dye modified polyamide fiber according to claim 1, characterized in that: the addition amount of the coloring modifier is 3-5% of the mass of the functional modifier; the coloring modifier comprises sodium citrate, zinc chloride and citric acid fatty glyceride; the mass ratio of the sodium citrate to the zinc chloride to the citric acid fatty glyceride in the coloring modifier is 3-5:1-2: 10-15.
6. The easy-to-dye modified polyamide fiber according to claim 1, characterized in that: preparing the functional master batch containing the naringin:
adding the chinlon slices, the antioxidant, the dispersing agent and the modified functional composition into a double-screw extruder according to the mass parts, mixing at a high speed, extruding and granulating to obtain functional master batches containing the naringin;
the weight ratio of the nylon chips, the antioxidant, the dispersant and the modified functional composition is 5-10: 0.1-0.3: 0.3-0.5: 1.5-2; the nylon chips are dried in vacuum before use, the drying temperature is 100-110 ℃, and the drying time is 80-110 min; the polyamide fiber slice has the transverse shrinkage of 0.2-0.3%, the longitudinal shrinkage of 0.6-0.7%, the relative viscosity of 2.5-2.6 and the amino end group content of 50-55%.
7. The easy-to-dye modified polyamide fiber according to claim 6, characterized in that: the antioxidant is antioxidant T-9228, the pH value is 5-7, the content of active substances is 99.5%, and the CAS number is 154862-43-8;
the dispersing agent consists of 5-10 parts by weight of hydroxymethyl cellulose, 1-5 parts by weight of sodium abietate, 5-10 parts by weight of BYK-358, 5-10 parts by weight of BYK-410 and 10-50 parts by weight of polyethylene oxide.
8. The easy-to-dye modified polyamide fiber according to claim 1, characterized in that: the spinning is carried out by adopting a three-step center method, and the method specifically comprises the following steps:
one-step spinning: the temperature of the double-screw extruder is 260-275 ℃; the spinning temperature is 275 ℃ and 280 ℃; the spinning speed is 3500-3800m/min, the winding speed is 3500-3800m/min and the draft multiple is 1.6-1.8; the winding tension is 6.2-7.8 cn/dtex; the temperature of the blowing air is measured to be 20-22 ℃, and the humidity is 140 percent;
two-step central spinning: the spinning speed is 4000-; the winding tension is 4.2-5.8 cn/dtex; the blowing temperature is 25-28 ℃ and the humidity is 80-90%;
spinning in three steps: the draft multiple is 1.2-1.3; the temperature of the box body is 180 ℃ and 185 ℃, and the feeding is carried out at-2.8 to 3.2; the wheel speed is 0.35-0.4rpm, the blowing temperature is 20-23 ℃, and the humidity is 50-70%.
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