CN114875534A - Antibacterial polyester-nylon composite fiber and preparation method thereof - Google Patents
Antibacterial polyester-nylon composite fiber and preparation method thereof Download PDFInfo
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- CN114875534A CN114875534A CN202210596949.7A CN202210596949A CN114875534A CN 114875534 A CN114875534 A CN 114875534A CN 202210596949 A CN202210596949 A CN 202210596949A CN 114875534 A CN114875534 A CN 114875534A
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 143
- 239000000835 fiber Substances 0.000 title claims abstract description 110
- 239000002131 composite material Substances 0.000 title claims abstract description 76
- 229920001778 nylon Polymers 0.000 title claims abstract description 75
- 239000004677 Nylon Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229920000728 polyester Polymers 0.000 claims abstract description 47
- 239000004952 Polyamide Substances 0.000 claims abstract description 28
- 229920002647 polyamide Polymers 0.000 claims abstract description 28
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910001923 silver oxide Inorganic materials 0.000 claims abstract description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 22
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000005751 Copper oxide Substances 0.000 claims abstract description 21
- 229910000431 copper oxide Inorganic materials 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 239000011247 coating layer Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 40
- 238000001035 drying Methods 0.000 claims description 21
- 239000011787 zinc oxide Substances 0.000 claims description 20
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000009987 spinning Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 241000588724 Escherichia coli Species 0.000 description 16
- 241000191967 Staphylococcus aureus Species 0.000 description 16
- 241000894006 Bacteria Species 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 9
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 8
- 229910001431 copper ion Inorganic materials 0.000 description 8
- 238000001514 detection method Methods 0.000 description 8
- 229910052709 silver Inorganic materials 0.000 description 8
- 239000004332 silver Substances 0.000 description 8
- -1 silver ions Chemical class 0.000 description 8
- 239000002245 particle Substances 0.000 description 6
- 102000004190 Enzymes Human genes 0.000 description 4
- 108090000790 Enzymes Proteins 0.000 description 4
- 108091005804 Peptidases Proteins 0.000 description 4
- 239000004365 Protease Substances 0.000 description 4
- 102100037486 Reverse transcriptase/ribonuclease H Human genes 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 230000002195 synergetic effect Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- 230000003385 bacteriostatic effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005253 cladding Methods 0.000 description 3
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 230000003115 biocidal effect Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002503 metabolic effect Effects 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 150000007523 nucleic acids Chemical class 0.000 description 2
- 102000039446 nucleic acids Human genes 0.000 description 2
- 108020004707 nucleic acids Proteins 0.000 description 2
- 230000003204 osmotic effect Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 125000003396 thiol group Chemical group [H]S* 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 239000012612 commercial material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000012681 fiber drawing Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 210000002374 sebum Anatomy 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 208000017520 skin disease Diseases 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
-
- 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
-
- 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
- D01F6/92—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 polyesters
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/36—Cored or coated yarns or threads
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/449—Yarns or threads with antibacterial properties
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Artificial Filaments (AREA)
Abstract
The application relates to the technical field of composite fibers, and particularly discloses an antibacterial polyester-nylon composite fiber and a preparation method thereof, wherein the antibacterial polyester-nylon composite fiber consists of a core wire and a coating layer; the core wire is modified nylon fiber, and the coating layer is polyester fiber; the modified nylon fiber comprises the following raw materials in parts by weight: 40-60 parts of polyester slices, 5-10 parts of activated carbon and 10-20 parts of antibacterial modified slices; the antibacterial modified slice comprises the following raw materials: nano titanium dioxide, silver oxide, copper oxide and polyester chips; the antibacterial polyester-polyamide composite fiber prepared by the method has better antibacterial performance.
Description
Technical Field
The application relates to the technical field of composite fibers, in particular to an antibacterial polyester-nylon composite fiber and a preparation method thereof.
Background
At present, the polyester-nylon composite superfine fiber is formed by simply twisting superfine polyester fiber and superfine nylon fiber, the composite fiber with simple twisting brings certain difficulty to post-treatment due to different fiber performances, such as the problem of uniform dyeing, and if cladding compounding is adopted, the fiber drawing performance of the fiber materials can be changed due to the addition of functional materials in the production of the functional polyester-nylon composite superfine fiber, and certain difficulty is brought to the realization of cladding.
Textile is a material which is often in direct contact with human bodies, and particularly, a large amount of sweat, sebum and various secretions are attached to underwear fabrics and the like, and especially under the condition of high temperature and humidity, bacteria can grow on the materials, so that skin diseases and the like can be caused, and the antibacterial and mildew-proof properties of the textile are always concerned.
In view of the above-mentioned related technologies, the inventor believes that the antibacterial property of the existing polyester-nylon composite fiber textile is general, and a large amount of bacteria can grow after long-term use.
Disclosure of Invention
In order to improve the antibacterial property of the polyester-nylon composite fiber, the application provides the antibacterial polyester-nylon composite fiber and a preparation method thereof.
In a first aspect, the application provides an antibacterial polyamide composite fiber, which adopts the following technical scheme:
an antibacterial polyester-polyamide composite fiber, which consists of a core wire and a coating layer; the core wire is modified nylon fiber, and the coating layer is polyester fiber;
the modified nylon fiber comprises the following raw materials in parts by weight: 40-60 parts of polyester slices, 5-10 parts of activated carbon and 10-20 parts of antibacterial modified slices; the antibacterial modified slice comprises the following raw materials: nanometer titanium dioxide, silver oxide, copper oxide and polyester chips.
By adopting the technical scheme, the antibacterial property of the nylon fiber can be improved by adding the antibacterial modified slice into the raw material of the nylon fiber, wherein the silver oxide in the antibacterial modified slice can be adsorbed on the surface of the bacteria and enter the body of the bacteria, the oxygen metabolic enzyme of the bacteria can capture one electron in the silver oxide, so that the silver oxide is changed into silver ions with positive charges, then the silver ions react with the sulfydryl with negative charges in the bacterial protease, and the protease rapidly loses activity due to the loss of the sulfydryl, so that the bacteria cannot be subjected to division propagation and killed; the antibacterial and bacteriostatic principle of copper oxide is basically the same as that of silver oxide, copper ions are heavy metal ions, and certain enzymes can be denatured, so that the natural state of important metal ions in bacteria can be disturbed, the three-dimensional structure of nucleic acid and the osmotic pressure of cells can be destroyed, the metabolism of the cells can be destroyed, and microorganisms can be killed; the surface of the nano titanium dioxide has a plurality of hydroxyl groups with stronger adsorption activity, so that the hydroxyl groups can be easily adsorbed with silver ions and copper ions, and the titanium dioxide adsorbing the silver ions and the copper ions can be used as carriers of the silver ions and the copper ions, thereby being beneficial to exerting the synergistic effect among the nano titanium dioxide, the silver oxide and the copper oxide and achieving the antibacterial effect.
Preferably, the antibacterial modified slice comprises the following raw materials in parts by weight: 8-12 parts of nano titanium dioxide, 10-20 parts of silver oxide, 4-8 parts of copper oxide and 15-25 parts of polyester chips.
By adopting the technical scheme, the antibacterial modified slice is prepared by adding the nano titanium dioxide, the silver oxide and the copper oxide into the polyester slice. The proportion of the nano titanium dioxide, the silver oxide, the copper oxide and the polyester chips is optimized, so that the prepared polyester-nylon composite fiber has good antibacterial performance.
Preferably, the average particle size of the nano titanium dioxide is 50-80 nm.
By adopting the technical scheme, when the average particle size of the nano titanium dioxide is limited within the range, the antibacterial property of the prepared composite fiber is enhanced, wherein the antibacterial rate of escherichia coli can reach 99.8%, and the antibacterial rate of staphylococcus aureus can reach 99.7%.
Preferably, the antibacterial modified slice also comprises 5-10 parts by weight of nano zinc oxide.
By adopting the technical scheme, the nano zinc oxide, the staphylococcus aureus and the escherichia coli are also added into the antibacterial modified slice, the nano zinc oxide, the staphylococcus aureus and the escherichia coli are negatively charged in a near-neutral or weakly alkaline environment, the surface of the nano zinc oxide is positively charged, the staphylococcus aureus and the escherichia coli which are more negatively charged can be easily adsorbed to the surface of the nano zinc oxide to kill the staphylococcus aureus and the escherichia coli, and the fact that the nano zinc oxide added into the antibacterial modified slice has antibacterial performance is shown, and therefore the antibacterial property of the prepared composite fiber can be enhanced by adding the nano zinc oxide.
Preferably, the polyester fiber is made of polyamide chips.
In a second aspect, the application provides a preparation method of an antibacterial polyester-nylon composite fiber, which adopts the following technical scheme: a preparation method of antibacterial polyester-nylon composite fiber comprises the following steps:
1) preparing an antibacterial modified slice: the preparation method comprises the following steps of (1) melting and uniformly mixing nano titanium dioxide, silver oxide, copper oxide and polyester chips, and extruding and granulating to obtain antibacterial modified chips;
2) preparing modified polyamide fiber: drying the polyester chips, the activated carbon and the antibacterial modified chips, melting the polyester chips, the activated carbon and the antibacterial modified chips at the temperature of 160-plus-200 ℃ to obtain a modified nylon fiber melt, and spinning the modified nylon fiber melt at the temperature of 260-plus-270 ℃ to obtain the modified nylon fiber;
3) preparing polyester fibers: drying the polyamide slices, melting the dried polyamide slices at the temperature of 180-plus-210 ℃ to obtain a polyester fiber melt, and spinning the polyester fiber melt at the temperature of 260-plus-270 ℃ to obtain polyester fibers;
4) preparing a composite fiber: coating the modified nylon fiber with the polyester fiber, cooling and solidifying in cross air at the temperature of 18-20 ℃ and the humidity of 58-60%, then putting into water at the temperature of 90-100 ℃ for 30-45min, taking out and drying to obtain the antibacterial polyester-nylon composite fiber.
Through adopting above-mentioned technical scheme, this application carries out antibiotic modification to polyamide fibre and makes modified polyamide fibre, then regards modified polyamide fibre as the heart yearn, and polyester fiber is as the coating, and the cladding is in the modified polyamide fibre outside, and the composite fiber who makes like this not only has antibacterial performance, because polyester fiber's guard action makes the antibiotic nature of washing polyamide composite fiber more lasting moreover.
Preferably, the drying temperature in the step 2) is 110-120 ℃, and the drying time is 40-55 min.
Preferably, the drying temperature in the step 3) is 100-120 ℃, and the drying time is 30-60 min.
In summary, the present application has the following beneficial effects:
1. according to the method, the antibacterial property of the nylon fiber can be improved by adding the antibacterial modified slices into the raw material of the nylon fiber, wherein the silver oxide in the antibacterial modified slices can be adsorbed on the surface of bacteria and enter the body of the bacteria, the oxygen metabolic enzyme of the bacteria can capture one electron in the silver oxide, so that the silver oxide is changed into a silver ion with positive charge, then the silver ion reacts with a sulfhydryl with negative charge in bacterial protease, and the protease rapidly loses activity due to the loss of the sulfhydryl, so that the bacteria cannot be subjected to division propagation and killed; the antibacterial and bacteriostatic principle of copper oxide is basically the same as that of silver oxide, copper ions are heavy metal ions, and certain enzymes can be denatured, so that the natural state of important metal ions in bacteria can be disturbed, the three-dimensional structure of nucleic acid and the osmotic pressure of cells can be destroyed, the metabolism of the cells can be destroyed, and microorganisms can be killed; the surface of the nano titanium dioxide has a plurality of hydroxyl groups with stronger adsorption activity, so that the hydroxyl groups can be easily adsorbed with silver ions and copper ions, and the titanium dioxide adsorbing the silver ions and the copper ions can be used as carriers of the silver ions and the copper ions, thereby being beneficial to exerting the synergistic effect among the nano titanium dioxide, the silver oxide and the copper oxide and achieving the antibacterial effect.
2. The nano zinc oxide, the staphylococcus aureus and the escherichia coli are added into the antibacterial modified slice, the nano zinc oxide, the staphylococcus aureus and the escherichia coli are all negatively charged in a near neutral or weakly alkaline environment, the surface of the nano zinc oxide is positively charged, the staphylococcus aureus and the escherichia coli which are more negatively charged can be easily adsorbed to the surface of the nano zinc oxide to kill the staphylococcus aureus and the escherichia coli, and the fact that the nano zinc oxide added into the antibacterial modified slice has antibacterial performance is shown, and therefore the antibacterial property of the prepared composite fiber can be enhanced by adding the nano zinc oxide.
3. The antibacterial polyester-nylon composite fiber prepared by the method is tested for tensile strength and antibacterial performance, the tensile strength of the polyester-nylon composite fiber is good and can reach 7.2cN/dtex, and the antibacterial rate of escherichia coli and the antibacterial rate of staphylococcus aureus can reach more than 99.9%.
Detailed Description
The present application will be described in further detail with reference to examples.
Raw materials
Nano titanium dioxide: the model is R218; the rest raw materials are common commercial materials.
Preparation example
Preparation examples 1 to 3
The antibacterial modified chips of preparation examples 1 to 3 were prepared by the following steps, using the respective raw materials and the amounts thereof shown in table 1: the preparation method comprises the steps of uniformly melting and mixing nano titanium dioxide, silver oxide, copper oxide and polyester chips at the temperature of 180-220 ℃, and then extruding and granulating to obtain the antibacterial modified chips.
TABLE 1 raw materials and amounts (kg) of the raw materials for the antibacterial modified chips of preparation examples 1 to 3
| Preparation example 1 | Preparation example 2 | Preparation example 3 | |
| Nano titanium dioxide | 8 | 10 | 12 |
| Silver oxide | 20 | 15 | 10 |
| Copper oxide | 4 | 6 | 8 |
| Polyester chip | 25 | 20 | 15 |
Examples
Example 1
The polyester-nylon composite fiber of embodiment 1 is prepared by the following steps:
1) preparing an antibacterial modified slice: the preparation method comprises the following steps of (1) melting and uniformly mixing nano titanium dioxide, silver oxide, copper oxide and polyester chips, and extruding and granulating to obtain antibacterial modified chips;
2) preparing modified polyamide fiber: drying the polyester chips, the activated carbon and the antibacterial modified chips at the drying temperature of 110 ℃ for 45min, melting 40kg of the polyester chips, 10kg of the activated carbon and 10kg of the antibacterial modified chips at the temperature of 180 ℃ after drying to obtain a modified nylon fiber melt, and spinning the modified nylon fiber melt at the temperature of 260 ℃ to obtain modified nylon fibers;
3) preparing polyester fiber: drying the polyamide slices at the drying temperature of 100 ℃ for 55min, melting at the temperature of 190 ℃ after drying to obtain a polyester fiber melt, and spinning the polyester fiber melt at the temperature of 260 ℃ to obtain polyester fibers;
4) preparing a composite fiber: coating the modified nylon fiber with the polyester fiber, cooling and solidifying in cross air at the temperature of 20 ℃ and the humidity of 60%, then putting the fiber into water at the temperature of 100 ℃ for 30min, taking out and drying to obtain the antibacterial superfine denier nylon water-soluble polyester composite fiber.
Example 2
The difference between the antibacterial polyester-polyamide composite fiber and the antibacterial polyester-polyamide composite fiber in the embodiment 1 is that 50kg of polyester chips, 8kg of activated carbon and 15kg of antibacterial modified chips are added in the step 2), and the rest steps are the same as those in the embodiment 1.
Example 3
The difference between the antibacterial polyester-polyamide composite fiber and the antibacterial polyester-polyamide composite fiber in the embodiment 1 is that 60kg of polyester chips, 5kg of activated carbon and 20kg of antibacterial modified chips are added in the step 2), and the rest steps are the same as those in the embodiment 1.
Example 4
An antibacterial polyester-nylon composite fiber is different from the antibacterial polyester-nylon composite fiber in example 2 in that an antibacterial modified slice is obtained from preparation example 2, and the rest steps are the same as those in example 2.
Example 5
An antibacterial polyester-nylon composite fiber is different from the antibacterial polyester-nylon composite fiber in example 2 in that an antibacterial modified slice is obtained from preparation example 3, and the rest steps are the same as those in example 2.
Example 6
The difference between the antibacterial polyester-nylon composite fiber and the antibacterial polyester-nylon composite fiber in the embodiment 4 is that the average particle size of nano titanium dioxide in an antibacterial modified slice is 60nm, and the rest steps are the same as those in the embodiment 4.
Example 7
The difference between the antibacterial polyester-nylon composite fiber and the antibacterial polyester-nylon composite fiber in the embodiment 4 is that the average particle size of nano titanium dioxide in an antibacterial modified slice is 50nm, and the rest steps are the same as those in the embodiment 4.
Example 8
The difference between the antibacterial polyester-nylon composite fiber and the antibacterial modified section in the embodiment 7 is that 5kg of nano zinc oxide is added in the antibacterial modified section, and the rest steps are the same as those in the embodiment 7.
Example 9
The difference between the antibacterial polyester-nylon composite fiber and the antibacterial modified section is that 8kg of nano zinc oxide is added into the antibacterial modified section, and the rest steps are the same as those in the embodiment 7.
Example 10
The difference between the antibacterial polyester-nylon composite fiber and the antibacterial modified section in the embodiment 7 is that 10kg of nano zinc oxide is added in the antibacterial modified section, and the rest steps are the same as those in the embodiment 7.
Comparative example
Comparative example 1
The difference between the antibacterial polyester-nylon composite fiber and the antibacterial polyester-nylon composite fiber in the embodiment 1 is that the same amount of unmodified nylon fiber is adopted to replace the modified nylon fiber, and the rest steps are the same as those in the embodiment 1.
Comparative example 2
The difference between the antibacterial polyester-polyamide composite fiber and the antibacterial polyester-polyamide composite fiber in the embodiment 1 is that the addition amount of nano titanium dioxide is 0, and the rest steps are the same as those in the embodiment 1.
Comparative example 3
The difference between the antibacterial polyester-nylon composite fiber and the antibacterial polyester-nylon composite fiber in the embodiment 1 is that the addition amount of silver oxide is 0, and the rest steps are the same as those in the embodiment 1.
Comparative example 4
The difference between the antibacterial polyester-nylon composite fiber and the antibacterial polyester-nylon composite fiber in the embodiment 1 is that the addition amount of copper oxide is 0, and the rest steps are the same as those in the embodiment 1.
Performance test
Detection method/test method
The antibacterial and explosion-proof membranes prepared in examples 1 to 10 and comparative examples 1 to 4 were subjected to performance tests, and the test results are shown in table 2 below.
Testing the fiber strength: the composite fibers obtained in examples 1 to 10 and examples 1 to 4 were subjected to a fiber strength test.
And (3) testing the bacteriostatic rate of escherichia coli and staphylococcus aureus: performing performance detection according to the evaluation regulation of the antibacterial performance of the GB/T20944.2-2007 textile, wherein when the antibacterial value is more than or equal to 1 or the antibacterial rate is more than or equal to 90.00%, the sample has an antibacterial effect; when the bacteriostasis value is more than or equal to 2 or the bacteriostasis rate is more than or equal to 99.00 percent, the sample has good antibacterial effect.
TABLE 2 examination results of examples 1 to 10 and comparative examples 1 to 4
According to the detection data of the embodiments 1 to 3, the raw material composition in the embodiment 2 is better, the antibacterial polyester-polyamide composite fiber prepared in the embodiment 2 has better strength, and the escherichia coli bacteriostasis rate and the staphylococcus aureus bacteriostasis rate are better.
The detection data of the embodiment 2 and the embodiments 4-5 are combined to show that the ratio of the antibacterial modified slice of the preparation example 2 is better, the antibacterial polyester-nylon composite fiber prepared from the antibacterial modified slice of the preparation example 2 has better escherichia coli inhibition rate and staphylococcus aureus inhibition rate, and the tensile strength can reach 6.9 cN/dtex.
The detection data of the embodiment 4 and the embodiments 6 to 7 are combined to see that the smaller the average particle size of the nano titanium dioxide in the antibacterial modified slice is, the better the antibacterial property of the prepared antibacterial polyester-polyamide composite fiber is, wherein when the average particle size of the nano titanium dioxide added in the antibacterial modified slice is 50nm, the antibacterial rate of escherichia coli of the antibacterial polyester-polyamide composite fiber reaches 99.8%, the antibacterial rate of staphylococcus aureus reaches 99.7%, and the tensile strength of the composite fiber reaches 7.1 cN/dtex.
The detection data of the embodiment 7 and the embodiments 8-10 are combined to show that the antibacterial polyester-nylon composite fiber prepared by adding the nano zinc oxide into the antibacterial modified slice has better antibacterial property, the antibacterial performance of the antibacterial polyester-nylon composite fiber is gradually enhanced along with the increase of the content of the nano zinc oxide, when the addition amount of the nano zinc oxide is more than 8kg, the antibacterial rate of escherichia coli and the antibacterial rate of staphylococcus aureus can both reach more than 99.9%, and the tensile strength of the composite fiber is also better and can reach 7.2 cN/dtex.
According to the detection data of the embodiment 1 and the comparative example 1, the antibacterial polyester-nylon composite fiber prepared from the modified nylon fiber has good antibacterial performance, and can effectively resist escherichia coli and staphylococcus aureus.
And the detection data of the comparative examples 2 to 4 show that when the addition amount of one of the nano titanium dioxide, the silver oxide and the copper oxide is 0, the antibacterial performance of the prepared polyester-nylon composite fiber is not as good as that when the nano titanium dioxide, the silver oxide and the copper oxide are added simultaneously, which shows that the nano titanium dioxide, the silver oxide and the copper oxide have a synergistic effect before the nano titanium dioxide, the silver oxide and the copper oxide have the synergistic effect, and the antibacterial performance of the antibacterial polyester-nylon composite fiber can be effectively improved.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (8)
1. The antibacterial polyester-nylon composite fiber is characterized by consisting of a core wire and a coating layer; the core wire is modified nylon fiber, and the coating layer is polyester fiber;
the modified nylon fiber comprises the following raw materials in parts by weight: 40-60 parts of polyester slices, 5-10 parts of activated carbon and 10-20 parts of antibacterial modified slices; the antibacterial modified slice comprises the following raw materials: nanometer titanium dioxide, silver oxide, copper oxide and polyester chips.
2. The antibacterial polyester-nylon composite fiber according to claim 1, characterized in that: the antibacterial modified slice comprises the following raw materials in parts by weight: 8-12 parts of nano titanium dioxide, 10-20 parts of silver oxide, 4-8 parts of copper oxide and 15-25 parts of polyester chips.
3. The antibacterial polyester-nylon composite fiber according to claim 2, characterized in that: the average grain diameter of the nano titanium dioxide is 50-80 nm.
4. The antibacterial polyester-nylon composite fiber according to claim 1, characterized in that: the antibacterial modified slice also comprises 5-10 parts by weight of nano zinc oxide.
5. The antibacterial polyester-polyamide composite fiber according to claim 1, characterized in that: the polyester fiber is prepared from polyamide chips.
6. A preparation method of the antibacterial polyester-nylon composite fiber according to any one of claims 1 to 5 is characterized by comprising the following steps: the method comprises the following steps:
1) preparing an antibacterial modified slice: the preparation method comprises the following steps of (1) melting and uniformly mixing nano titanium dioxide, silver oxide, copper oxide and polyester chips, and extruding and granulating to obtain antibacterial modified chips;
2) preparing modified polyamide fiber: drying the polyester chips, the activated carbon and the antibacterial modified chips, melting the polyester chips, the activated carbon and the antibacterial modified chips at the temperature of 160-plus-200 ℃ to obtain a modified nylon fiber melt, and spinning the modified nylon fiber melt at the temperature of 260-plus-270 ℃ to obtain the modified nylon fiber;
3) preparing polyester fibers: drying the polyamide slices, melting the dried polyamide slices at the temperature of 180-plus-210 ℃ to obtain a polyester fiber melt, and spinning the polyester fiber melt at the temperature of 260-plus-270 ℃ to obtain polyester fibers;
4) preparing a composite fiber: coating the modified nylon fiber with the polyester fiber, cooling and solidifying in cross air at the temperature of 18-20 ℃ and the humidity of 58-60%, then putting into water at the temperature of 90-100 ℃ for 30-45min, taking out and drying to obtain the antibacterial polyester-nylon composite fiber.
7. The preparation method of the antibacterial polyester-nylon composite fiber according to claim 6, characterized by comprising the following steps: the drying temperature in the step 2) is 110-120 ℃, and the drying time is 40-55 min.
8. The preparation method of the antibacterial polyester-nylon composite fiber according to claim 6, characterized by comprising the following steps: the drying temperature in the step 3) is 100-120 ℃, and the drying time is 30-60 min.
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Application publication date: 20220809 |