CN110565203A - Antibacterial composite short fiber and preparation method thereof - Google Patents
Antibacterial composite short fiber and preparation method thereof Download PDFInfo
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- CN110565203A CN110565203A CN201910941147.3A CN201910941147A CN110565203A CN 110565203 A CN110565203 A CN 110565203A CN 201910941147 A CN201910941147 A CN 201910941147A CN 110565203 A CN110565203 A CN 110565203A
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- 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
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
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- 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
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- 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
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/04—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers
- D01F11/06—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
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- 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/10—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
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- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Artificial Filaments (AREA)
Abstract
the invention discloses an antibacterial composite short fiber and a preparation method thereof, wherein the PP/PE composite short fiber comprises a core layer and an outer layer, the core layer and the outer layer are concentric, and the core layer comprises the following raw materials in parts by mass: 40-50 parts of polypropylene, 5-9 parts of ethylene-propylene copolymer, 4-6 parts of propylene block copolymer, 8-9 parts of starch-acrylic acid super absorbent resin, 2-3 parts of titanium dioxide and 4-8 parts of zinc oxide; the outer layer comprises the following raw materials in parts by weight: 20-30 parts of linear low-density polyethylene, 20-30 parts of high-density polyethylene, 20-30 parts of antibacterial polyethylene particles, 10-15 parts of methyl methacrylate graft modified polyethylene, 10-12 parts of ethylene graft methyl methacrylate and 12-17 parts of sodium polyacrylate super absorbent resin. The PP/PE composite short fiber material has the following beneficial effects: the product has the advantages of less curling number, less defects, small rewet amount after water absorption, good air permeability, good bacteriostatic effect and excellent comprehensive performance.
Description
Technical Field
the invention relates to the technical field of composite fibers, in particular to an antibacterial composite short fiber and a preparation method thereof.
background
composite fibers are a new variety of chemical fibers, different from blends of shaped fibers or blends of different filaments, and different from the individual components being thoroughly mixed prior to entering the spin pack. The composite fiber is prepared by mixing two or more polymer melts with different properties through different components, wherein the mixture of the two or more polymer melts has viscosity difference, and the two or more polymer melts are respectively introduced into a spinning assembly, mixed at a proper position of the spinning assembly and then sprayed out to form one fiber through the same spinneret orifice.
The composite fiber has the advantages of light weight, degradability, low cost and the like, and is widely applied to products such as infant diapers, adult diapers and the like, so that the composite fiber with good comprehensive performance is urgently needed.
The prior art has the following defects: 1. the bacteriostasis time is short, and the sterilization effect is unstable; 2. poor moisture absorption and breathability; 3. in the winding and drafting process of the composite short fiber, the phenomena of fiber broken filaments and even broken ends are easy to occur.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the antibacterial composite short fiber has the advantages of long antibacterial time, stable antibacterial effect, small back-seepage amount after water absorption and good air permeability.
The present invention aims to solve the problems of the prior art and provide an antibacterial composite short fiber and a preparation method thereof.
in order to achieve the purpose, the invention adopts the following technical scheme:
An antibacterial composite short fiber, which consists of a core layer and an outer layer, wherein the core layer and the outer layer are concentric circles,
the core layer comprises the following raw materials in parts by mass: 40-50 parts of polypropylene, 5-9 parts of ethylene-propylene copolymer, 4-6 parts of propylene block copolymer, 8-9 parts of starch-acrylic acid super absorbent resin, 2-3 parts of titanium dioxide and 4-8 parts of zinc oxide;
The outer layer comprises the following raw materials in parts by weight: 20-30 parts of linear low-density polyethylene, 20-30 parts of high-density polyethylene, 20-30 parts of antibacterial polyethylene particles, 10-15 parts of methyl methacrylate graft modified polyethylene, 10-12 parts of ethylene graft methyl methacrylate and 12-17 parts of sodium polyacrylate super absorbent resin.
a preparation method of antibacterial composite short fibers comprises the following steps:
a. Preparation of antibacterial polyethylene particles
b. Weighing the following components in parts by weight: 40-50 parts of polypropylene, 5-9 parts of ethylene-propylene copolymer, 4-6 parts of propylene block copolymer, 8-9 parts of starch-acrylic acid super absorbent resin, 2-3 parts of titanium dioxide and 4-8 parts of zinc oxide, wherein the starch-acrylic acid super absorbent resin, the titanium dioxide and the zinc oxide are put into a high-speed crusher, are uniformly mixed with the polypropylene and the ethylene-propylene copolymer and are fed into a screw extruder to be melted into a polypropylene mixed material;
c. Weighing the following components in parts by weight: 20-30 parts of linear low-density polyethylene, 20-30 parts of high-density polyethylene, 20-30 parts of antibacterial polyethylene particles, 10-15 parts of methyl methacrylate graft modified polyethylene, 10-12 parts of ethylene graft methyl methacrylate and 12-17 parts of sodium polyacrylate super absorbent resin, uniformly mixing the raw materials, and feeding the mixture into a screw extruder to be melted into a polyethylene mixed material;
d, uniformly mixing the polypropylene mixed material and the polyethylene mixed material, feeding the mixture into a screw extruder for melting, feeding the polyolefin melt into a filter for filtering and removing impurities, feeding the polyolefin melt into a metering pump for metering the compounding required proportion, and feeding the polyolefin melt into a spinning assembly;
e, extruding the composite spinning assembly and a spinneret plate in a spinning box, cooling and forming by cross air blow, winding and treating by a treating agent to form composite fiber precursor, and feeding the composite fiber precursor into a filament containing barrel;
Wherein the treating agent comprises the following raw materials in parts by weight: 3.4-5 parts of fatty alcohol-polyoxyethylene ether, 2.1-2.8 parts of antistatic agent, 3-5 parts of eucalyptus oil, 1-3 parts of fatty alcohol-polyoxyethylene ether and 2-4 parts of octadecylamine polyoxyethylene ether.
and f, drafting and curling the composite fiber protofilament to obtain the antibacterial composite short fiber.
as a further improvement, the step a comprises the following steps: uniformly mixing 1-2 parts by weight of nano silver and 8-10 parts by weight of polyethylene particles, melting in an electric heating pot, and then preparing the antibacterial polyethylene particles through a granulator.
As a further improvement, the temperature difference between the polypropylene mixture and the polyethylene mixture before entering the composite spinning manifold in the step 3) is 10-15 ℃ higher than that of the PE granules.
As a further improvement, the melting temperature in the step a is 300-340 ℃.
as a further improvement, the particle size of the nano silver is 8-10 nm.
compared with the prior art, the invention has the following beneficial effects:
the antibacterial composite short fiber is prepared by mixing the raw materials and extruding the mixture through a spinning component and a spinneret plate, has the advantages of small crimp number, defect content of 6mg/110g, breaking strength of 3.40cN/dtex, and comprehensive indexes of superior products.
The air permeability and the water absorption of a product prepared from the antibacterial composite short fiber are obviously superior to those of a product sold in the market, and the product has small rewet amount after water absorption and belongs to a low rewet type. The ES antibacterial composite short fiber has the advantages that the components of the core layer and the outer layer are matched with each other, a good synergistic effect is achieved, and finally the prepared product is good in comprehensive performance, breathable, skin-friendly and antibacterial.
The antibacterial composite short fiber prepared by the preparation method of the antibacterial composite short fiber has less appearance broken filaments and less end breakage phenomenon, and the finished product of the ultrashort fiber is soft and comfortable in hand feeling through treatment of the treating agent, so that the number of curls can be well controlled, and the end breakage phenomenon is less, and the smooth production process is facilitated.
The raw material polyethylene in the antibacterial composite short fiber is uniformly distributed in the composite fiber after being treated by nano silver ions, so that the formed material has antibacterial property and can effectively inhibit bacteria from breeding.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described with reference to the following embodiments:
example 1
A preparation method of antibacterial composite short fibers comprises the following steps:
a. Uniformly mixing 1 part by weight of nano silver and 8 parts by weight of polyethylene particles, melting in an electric heating pot, and preparing antibacterial polyethylene particles through a granulator;
b. weighing the following components in parts by weight: 40 parts of polypropylene, 5 parts of ethylene-propylene copolymer, 4 parts of propylene block copolymer, 8 parts of starch-acrylic acid super absorbent resin, 2 parts of titanium dioxide and 4-8 parts of zinc oxide, wherein the starch-acrylic acid super absorbent resin, the titanium dioxide and the zinc oxide are put into a high-speed crusher, are uniformly mixed with the polypropylene and the ethylene-propylene copolymer and are fed into a screw extruder to be melted into polypropylene mixed material;
c. Weighing the following components in parts by weight: 20 parts of linear low-density polyethylene, 20 parts of high-density polyethylene, 20 parts of antibacterial polyethylene particles, 10 parts of methyl methacrylate graft modified polyethylene, 10 parts of ethylene graft methyl methacrylate and 12 parts of sodium polyacrylate super absorbent resin, uniformly mixing the raw materials, and feeding the mixture into a screw extruder to be melted into a polyethylene mixed material;
d. uniformly mixing a polypropylene mixed material and a polyethylene mixed material, feeding the mixture into a screw extruder for melting, feeding a polyolefin melt into a filter for filtering and removing impurities, feeding the polyolefin melt into a metering pump for metering the compounding required proportion, and feeding the polyolefin melt into a spinning assembly;
e. Extruding the spinning manifold through a composite spinning component and a spinneret plate, cooling and forming through cross air blow, winding and treating through a treating agent to form composite fiber precursor, and feeding the composite fiber precursor into a filament containing barrel; the treating agent comprises the following components in parts by weight: 3.4 parts of fatty alcohol-polyoxyethylene ether, 2.1 parts of antistatic agent, 3 parts of eucalyptus oil, 1 part of fatty alcohol-polyoxyethylene ether and 2 parts of octadecylamine polyoxyethylene ether.
f. And (3) drafting and curling the composite fiber protofilament to obtain the antibacterial composite short fiber.
Example 2
a preparation method of antibacterial composite short fibers comprises the following steps:
a. Uniformly mixing 1 part by weight of nano silver and 9 parts by weight of polyethylene particles, melting in an electric heating pot, and preparing antibacterial polyethylene particles through a granulator;
b. weighing the following components in parts by weight: 42 parts of polypropylene, 6 parts of ethylene-propylene copolymer, 4 parts of propylene block copolymer, 8 parts of starch-acrylic acid super absorbent resin, 2 parts of titanium dioxide and 5 parts of zinc oxide, wherein the starch-acrylic acid super absorbent resin, the titanium dioxide and the zinc oxide are put into a high-speed crusher, are uniformly mixed with the polypropylene and the ethylene-propylene copolymer, and are fed into a screw extruder to be melted into polypropylene mixed material;
c. Weighing the following components in parts by weight: 24 parts of linear low-density polyethylene, 24 parts of high-density polyethylene, 22 parts of antibacterial polyethylene particles, 13 parts of methyl methacrylate graft modified polyethylene, 11 parts of ethylene graft methyl methacrylate and 13 parts of sodium polyacrylate super absorbent resin, uniformly mixing the raw materials, and feeding the mixture into a screw extruder to be melted into a polyethylene mixed material;
d. Uniformly mixing a polypropylene mixed material and a polyethylene mixed material, feeding the mixture into a screw extruder for melting, feeding a polyolefin melt into a filter for filtering and removing impurities, feeding the polyolefin melt into a metering pump for metering the compounding required proportion, and feeding the polyolefin melt into a spinning assembly;
e. Extruding the spinning manifold through a composite spinning component and a spinneret plate, cooling and forming through cross air blow, winding and treating through a treating agent to form composite fiber precursor, and feeding the composite fiber precursor into a filament containing barrel; the treating agent comprises the following components in parts by weight: 3.8 parts of fatty alcohol-polyoxyethylene ether, 2.3 parts of antistatic agent, 4 parts of eucalyptus oil, 2 parts of fatty alcohol-polyoxyethylene ether and 3 parts of octadecylamine polyoxyethylene ether.
f. And (3) drafting and curling the composite fiber protofilament to obtain the antibacterial composite short fiber.
example 3
A preparation method of antibacterial composite short fibers comprises the following steps:
a. uniformly mixing 1 part by weight of nano silver and 10 parts by weight of polyethylene particles, melting in an electric heating pot, and preparing antibacterial polyethylene particles through a granulator;
b. Weighing the following components in parts by weight: 46 parts of polypropylene, 7 parts of ethylene-propylene copolymer, 5 parts of propylene block copolymer, 9 parts of starch-acrylic acid super absorbent resin, 3 parts of titanium dioxide and 7 parts of zinc oxide, wherein the starch-acrylic acid super absorbent resin, the titanium dioxide and the zinc oxide are put into a high-speed crusher, are uniformly mixed with the polypropylene and the ethylene-propylene copolymer, and are fed into a screw extruder to be melted into polypropylene mixed material;
c. Weighing the following components in parts by weight: 28 parts of linear low-density polyethylene, 28 parts of high-density polyethylene, 25 parts of antibacterial polyethylene particles, 14 parts of methyl methacrylate graft modified polyethylene, 11 parts of ethylene graft methyl methacrylate and 16 parts of sodium polyacrylate super absorbent resin, uniformly mixing the raw materials, and feeding the mixture into a screw extruder to be melted into a polyethylene mixed material;
d. uniformly mixing a polypropylene mixed material and a polyethylene mixed material, feeding the mixture into a screw extruder for melting, feeding a polyolefin melt into a filter for filtering and removing impurities, feeding the polyolefin melt into a metering pump for metering the compounding required proportion, and feeding the polyolefin melt into a spinning assembly;
e. Extruding the spinning manifold through a composite spinning component and a spinneret plate, cooling and forming through cross air blow, winding and treating through a treating agent to form composite fiber precursor, and feeding the composite fiber precursor into a filament containing barrel; the treating agent comprises the following components in parts by weight: 4.5 parts of fatty alcohol-polyoxyethylene ether, 2.6 parts of antistatic agent, 4 parts of eucalyptus oil, 2 parts of fatty alcohol-polyoxyethylene ether and 3 parts of octadecylamine polyoxyethylene ether.
f. And (3) drafting and curling the composite fiber protofilament to obtain the antibacterial composite short fiber.
Example 4
A preparation method of antibacterial composite short fibers comprises the following steps:
a. uniformly mixing 2 parts by weight of nano silver and 10 parts by weight of polyethylene particles, melting in an electric heating pot, and preparing antibacterial polyethylene particles through a granulator;
b. Weighing the following components in parts by weight: 50 parts of polypropylene, 9 parts of ethylene-propylene copolymer, 6 parts of propylene block copolymer, 9 parts of starch-acrylic acid super absorbent resin, 3 parts of titanium dioxide and 8 parts of zinc oxide, wherein the starch-acrylic acid super absorbent resin, the titanium dioxide and the zinc oxide are put into a high-speed crusher, are uniformly mixed with the polypropylene and the ethylene-propylene copolymer, and are fed into a screw extruder to be melted into polypropylene mixed material;
c. Weighing the following components in parts by weight: 30 parts of linear low-density polyethylene, 30 parts of high-density polyethylene, 30 parts of antibacterial polyethylene particles, 15 parts of methyl methacrylate graft modified polyethylene, 12 parts of ethylene graft methyl methacrylate and 17 parts of sodium polyacrylate super absorbent resin, uniformly mixing the raw materials, and feeding the mixture into a screw extruder to be melted into a polyethylene mixed material;
d. uniformly mixing a polypropylene mixed material and a polyethylene mixed material, feeding the mixture into a screw extruder for melting, feeding a polyolefin melt into a filter for filtering and removing impurities, feeding the polyolefin melt into a metering pump for metering the compounding required proportion, and feeding the polyolefin melt into a spinning assembly;
e. extruding the spinning manifold through a composite spinning component and a spinneret plate, cooling and forming through cross air blow, winding and treating through a treating agent to form composite fiber precursor, and feeding the composite fiber precursor into a filament containing barrel; the treating agent comprises the following components in parts by weight: 5 parts of fatty alcohol-polyoxyethylene ether, 2.8 parts of antistatic agent, 3-5 parts of eucalyptus oil, 3 parts of fatty alcohol-polyoxyethylene ether and 4 parts of octadecylamine polyoxyethylene ether.
f. and (3) drafting and curling the composite fiber protofilament to obtain the antibacterial composite short fiber.
Comparative example 1 the formulation components in the comparative example are identical to those of example 2 except that the core layer does not contain the starch-acrylic acid superabsorbent resin.
Comparative example 2 the formulation components in the comparative example are substantially identical to those of example 2 except that the composite fiber strands were not treated with the treating agent at the time of winding.
Comparative example 3 the formulation components in the comparative example are substantially identical to those of example 2 except that no antimicrobial polyethylene particles are present.
TABLE 1 test results of examples 1 to 4 and comparative examples 1 to 2
M1 is the central value of elongation at break, selected in the range of 100% -130%, and M2 is the central value of the number of crimps, determined by both supplier and supplier.
table 1 shows the performance test results of examples 1-4 and comparative examples 1-2, which show that: 1) the antibacterial composite short fiber is prepared by mixing the raw materials and extruding the raw materials through a spinning component and a spinneret plate, the number of crimps of the antibacterial composite short fiber is gradually reduced in examples 1-3, compared with comparative example 1, in example 3, the number of crimps is small, the defect content is 6mg/110g, the breaking strength reaches 3.40cN/dtex, and all indexes comprehensively reach the indexes of superior products; 2) compared with the comparative example 2, the appearance broken filaments of the fiber are less, the phenomenon of end breakage is less, and the ultra-short fiber finished product is soft and comfortable in hand feeling through treatment of the treating agent, the number of curls can be well controlled, and the phenomenon of end breakage is less, so that the smooth production process is facilitated.
And (3) performance testing: the antibacterial composite short fibers prepared in the embodiments 2 and 3 and the comparative example 1 of the present invention are hot-rolled to form nonwoven fabric layers with the same specification, and then the nonwoven fabric layers are subjected to performance test, and a commercially available common nonwoven fabric with the same specification is subjected to performance test, see table 2, wherein before the rewet level test, the nonwoven fabric surface layer and the commercially available common nonwoven fabric are first prepared into a diaper, and then the diaper is tested with reference to GB/T28004-2011. The antibacterial effect of the nano-silver antibacterial non-woven fabric is detected according to the GB15979-2002 hygienic standards appendix C4 for disposable hygienic products.
Table 2 example 2 and comparative examples 1, 2, 3 test results
as can be seen from the above table, the antibacterial composite short fiber of the present invention has the following advantages: the air permeability and the water absorption rate are obviously superior to those of products sold in the market, which shows that the product prepared from the antibacterial composite short fiber has good moisture-conducting effect and air permeability effect, has small rewet capacity after water absorption, belongs to a low rewet type, and is uniformly distributed in the composite fiber after being treated by nano silver ions, so that the formed material has antibacterial property and can effectively inhibit the breeding of bacteria;
as can be seen from the analysis of tables 1 and 2, the components of the core layer and the outer layer of the ES antibacterial composite short fiber provided by the invention are matched with each other, so that a better synergistic effect is achieved, and finally, the prepared product has good performances, and is breathable, skin-friendly and antibacterial.
the above description is only for the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention are within the scope of the present invention.
Claims (6)
1. an antibacterial composite short fiber is characterized by comprising a core layer and an outer layer which are concentric,
the core layer comprises the following raw materials in parts by mass: 40-50 parts of polypropylene, 5-9 parts of ethylene-propylene copolymer, 4-6 parts of propylene block copolymer, 8-9 parts of starch-acrylic acid super absorbent resin, 2-3 parts of titanium dioxide and 4-8 parts of zinc oxide;
the outer layer comprises the following raw materials in parts by weight: 20-30 parts of linear low-density polyethylene, 20-30 parts of high-density polyethylene, 20-30 parts of antibacterial polyethylene particles, 10-15 parts of methyl methacrylate graft modified polyethylene, 10-12 parts of ethylene graft methyl methacrylate and 12-17 parts of sodium polyacrylate super absorbent resin.
2. a method for preparing an antibacterial composite staple fiber according to claim 1, comprising the steps of:
a. preparation of antibacterial polyethylene particles
b. Weighing the following components in parts by weight: 40-50 parts of polypropylene, 5-9 parts of ethylene-propylene copolymer, 4-6 parts of propylene block copolymer, 8-9 parts of starch-acrylic acid super absorbent resin, 2-3 parts of titanium dioxide and 4-8 parts of zinc oxide, wherein the starch-acrylic acid super absorbent resin, the titanium dioxide and the zinc oxide are put into a high-speed crusher, are uniformly mixed with the polypropylene and the ethylene-propylene copolymer and are fed into a screw extruder to be melted into a polypropylene mixed material;
c. Weighing the following components in parts by weight: 20-30 parts of linear low-density polyethylene, 20-30 parts of high-density polyethylene, 20-30 parts of antibacterial polyethylene particles, 10-15 parts of methyl methacrylate graft modified polyethylene, 10-12 parts of ethylene graft methyl methacrylate and 12-17 parts of sodium polyacrylate super absorbent resin, uniformly mixing the raw materials, and feeding the mixture into a screw extruder to be melted into a polyethylene mixed material;
d. Uniformly mixing a polypropylene mixed material and a polyethylene mixed material, feeding the mixture into a screw extruder for melting, feeding a polyolefin melt into a filter for filtering and removing impurities, feeding the polyolefin melt into a metering pump for metering the compounding required proportion, and feeding the polyolefin melt into a spinning assembly;
e. Extruding the spinning manifold through a composite spinning component and a spinneret plate, cooling and forming through cross air blow, winding and treating through a treating agent to form composite fiber precursor, and feeding the composite fiber precursor into a filament containing barrel;
Wherein the treating agent comprises the following raw materials in parts by weight: 3.4-5 parts of fatty alcohol-polyoxyethylene ether, 2.1-2.8 parts of antistatic agent, 3-5 parts of eucalyptus oil, 1-3 parts of fatty alcohol-polyoxyethylene ether and 2-4 parts of octadecylamine polyoxyethylene ether.
f. and (3) drafting and curling the composite fiber protofilament to obtain the antibacterial composite short fiber.
3. The method for preparing antibacterial composite staple fiber according to claim 2, wherein the step a comprises the following steps: uniformly mixing 1-2 parts by weight of nano silver and 8-10 parts by weight of polyethylene particles, melting in an electric heating pot, and then preparing the antibacterial polyethylene particles through a granulator.
4. The method for producing antibacterial composite staple fibers according to claim 4, wherein the temperature of the polypropylene mixture and the polyethylene mixture before entering the composite spinning manifold in the step 3) is 10-15 ℃ different from that of the PE pellets.
5. a method for producing an antibacterial composite staple fiber as claimed in claim 3, wherein the melting temperature in step a is 300-340 ℃.
6. The production method of antibacterial composite staple fiber according to claim 3, wherein the particle size of the nano-silver is 8-10 nm.
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| CN111118656A (en) * | 2020-03-18 | 2020-05-08 | 百事基材料（青岛）股份有限公司 | ES fiber containing wormwood extract and preparation method thereof |
| CN112695408A (en) * | 2020-12-31 | 2021-04-23 | 江苏纳盾科技有限公司 | Efficient quick-acting non-dissolution antibacterial composite fiber and preparation method thereof |
| CN112790456A (en) * | 2020-12-29 | 2021-05-14 | 无锡市圣华盾医疗科技有限公司 | Waterproof moisture-permeable medical protective clothing and manufacturing method thereof |
| CN113106633A (en) * | 2021-04-09 | 2021-07-13 | 福建澳杰无纺布科技有限公司 | Antibacterial PP (polypropylene) spun-bonded non-woven fabric and preparation method thereof |
| CN113136636A (en) * | 2021-05-12 | 2021-07-20 | 福建省福地化纤科技有限公司 | Super-absorbent ES composite fiber and preparation method thereof |
| CN113186617A (en) * | 2021-05-12 | 2021-07-30 | 福建省福地化纤科技有限公司 | Anion antibacterial ES composite fiber and preparation method thereof |
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| CN112695408A (en) * | 2020-12-31 | 2021-04-23 | 江苏纳盾科技有限公司 | Efficient quick-acting non-dissolution antibacterial composite fiber and preparation method thereof |
| CN112695408B (en) * | 2020-12-31 | 2023-01-24 | 江苏纳盾科技有限公司 | Efficient quick-acting non-dissolution antibacterial composite fiber and preparation method thereof |
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