CN116084051A - Bio-based antibacterial polyester-nylon composite superfine fiber and production process thereof - Google Patents
Bio-based antibacterial polyester-nylon composite superfine fiber and production process thereof Download PDFInfo
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- CN116084051A CN116084051A CN202211525546.XA CN202211525546A CN116084051A CN 116084051 A CN116084051 A CN 116084051A CN 202211525546 A CN202211525546 A CN 202211525546A CN 116084051 A CN116084051 A CN 116084051A
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Images
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
- D01F6/92—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
- 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
-
- 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
- D01F6/90—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
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/03—Polysaccharides or derivatives thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/34—Polyamides
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- Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Mechanical Engineering (AREA)
- Multicomponent Fibers (AREA)
Abstract
The utility model relates to a polyester-nylon composite fiber and the technical field of preparation thereof, in particular to a bio-based antibacterial polyester-nylon composite superfine fiber and a production process thereof, comprising a polyester fiber core material, nylon fiber and a natural antibacterial finishing agent; the polyester fiber core material is positioned at the central position, the polyester fiber core material contains an organic antibacterial finishing agent, the section of the polyester fiber core material is in a petal shape or an orange petal shape, the polyester fiber core material comprises a core column and a plurality of petal parts which are arranged around the core column, and a filling area is arranged between every two adjacent petal parts; the nylon fibers are filled in the filling area and are wound with a polyester fiber core material; the natural antibacterial finishing agent is coated at the concave area, and the natural antibacterial finishing agent is coated on the nylon fiber, so that the external nylon fiber is combined with the natural antibacterial finishing agent, so that the polyester-nylon composite superfine fiber can meet the antibacterial effect and can not excessively use the antibacterial agent harmful to human bodies.
Description
Technical Field
The utility model relates to the technical field of polyester-nylon composite fibers and preparation thereof, in particular to a bio-based antibacterial polyester-nylon composite superfine fiber and a production process thereof.
Background
The polyester-nylon composite yarn is characterized in that the polyester-nylon composite yarn is also called as superfine fiber, and also called as regenerated polyester-nylon composite yarn, functional composite yarn, unique functional composite yarn and the like, wherein the polyester-nylon composite yarn is formed by dividing two high polymer melts through a special distribution plate and extruding the two high polymer melts through the same spinneret hole, and the fabric formed by the polyester-nylon composite yarn has the advantages of wear resistance, high strength, easiness in dyeing and moisture absorption of nylon, has the advantages of good polyester elasticity recovery, good shape retention, oil absorption performance and the like, and is mainly applied to the aspects of industrial textile products, home textile products and the like.
However, the conventional polyester-nylon composite fiber has certain defects in antibacterial aspect, and influences the use effect of people. At present, two methods exist for antibacterial treatment of polyester-nylon composite fibers, one method is to add an antibacterial agent into a fiber-forming polymer, and an blending yarn method is adopted to prepare the antibacterial fiber. The blending spinning method is a method for preparing antibacterial fibers by adding an antibacterial agent into a fiber polymerization stage or spinning solution. The method has the advantages of no need of post-finishing and low cost. Another method is a method of performing post-processing treatment using an antibacterial finishing agent. The finishing process combines the antibacterial agent with the fiber to provide the textile with antibacterial function. Experiments prove that the antibacterial durability of the antibacterial cotton fabric is better than that of the antibacterial synthetic fiber. The reason for this is mainly because the antibacterial agent of the fiber core layer cannot migrate to the fiber sheath layer, and cannot play an antibacterial role. The best way to solve this problem is to make the antimicrobial fiber in a sheath-core structure: namely, the antibacterial agent is added into the skin layer, and the core layer is made of common fibers. The addition amount of the antibacterial agent cannot be too large, otherwise the physical index of the antibacterial fiber is seriously affected. For this reason, the antibacterial effect and the range of use of antibacterial synthetic fibers are greatly limited.
The Chinese patent with the patent number of CN202121969144.X discloses a polyester-nylon composite fiber based on a biological base material, which comprises a fiber mechanism and a moisture absorption antibacterial mechanism, wherein the fiber mechanism comprises polyester fibers and nylon fibers arranged on the polyester fibers, and the moisture absorption antibacterial mechanism comprises an antibacterial layer connected to the nylon fibers and grooves formed in the surface of the antibacterial layer. According to the utility model, through the mutual compounding of the toothed polyester fibers and the petal-shaped nylon fibers, the tension between the fibers can be enhanced, and the connection strength is improved, so that the composite fibers have the characteristics of high strength and good elasticity of the polyester fibers, and also have the characteristics of high wear resistance and good dyeing property of the nylon fibers, and meanwhile, the specific surface area of the composite fibers can be enlarged through the grooves.
However, the polyester-nylon composite fiber disclosed in the above patent document has a problem that the antibacterial effect is poor and the antibacterial requirement cannot be satisfied.
Disclosure of Invention
Aiming at the problems, the utility model provides the bio-based antibacterial polyester-nylon composite superfine fiber and the production process, the polyester-nylon composite superfine fiber is used as the core material, the nylon fiber surrounds the core material for co-spinning, the section shape of the core material formed by the polyester fiber is selected to be petal-shaped or orange petal-shaped, a filling area is formed between petal parts and is used for filling the nylon fiber, and the natural antibacterial finishing agent is matched, so that the organic antibacterial finishing agent is contained in the core material, and meanwhile, the external nylon fiber is combined due to the natural antibacterial finishing agent, so that the polyester-nylon composite superfine fiber meets the antibacterial effect, and meanwhile, the antibacterial agent harmful to human body is not excessively used.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a bio-based antimicrobial polyester-nylon composite superfine fiber, comprising:
polyester fiber core material, nylon fiber and natural antibacterial finishing agent;
the polyester fiber core material is positioned at the central position, an organic antibacterial finishing agent is contained in the polyester fiber core material, the section of the polyester fiber core material is in a petal shape or an orange petal shape, the polyester fiber core material comprises a core column and a plurality of petal parts which are arranged around the core column, and filling areas are arranged between the adjacent petal parts;
the nylon fiber is filled in the filling area, is wound with the polyester fiber core material, and is provided with a concave area at the outer edge of the nylon fiber;
the natural antibacterial finishing agent is filled in the concave area, and the natural antibacterial finishing agent is attached to the nylon fiber.
In addition, the application also provides a process for preparing the bio-based antibacterial polyester-nylon composite superfine fiber according to the intellectual property rights, which comprises the following steps:
s1, mixing 75-85 parts of polyester chips, 25-30 parts of hexanediol, 25-35 parts of isophthalic acid and 5-10 parts of organic antibacterial finishing agent according to parts by weight, and adding the mixture into a screw extruder for melt extrusion to obtain a melt A;
s2, mixing 65-75 parts of nylon slices and 20-25 parts of graphene powder in parts by weight, and adding into a screw extruder for melt extrusion to obtain a melt B;
s3, conveying the melt A and the melt B to a spinning box body, respectively conveying the melt A and the melt B to a first blanking channel and a second blanking channel on a first distribution plate of a spinning assembly, filling the first blanking channel and the second blanking channel in a first forming groove and a second forming groove of a second distribution plate, and forming a polyester-nylon composite fiber after being sprayed and cooled through spinning holes of a spinneret plate;
s4, conveying the polyester-nylon composite fiber formed by cooling downwards, and inflating and expanding and contracting the elastic shrinkage tube outside the particle area through diffusing the particle area of the natural antibacterial finishing agent, so that the natural antibacterial finishing agent is adhered to the concave area to form the natural antibacterial finishing module.
As an improvement, in the step S1, the organic antibacterial finishing agent is a non-leaching antibacterial finishing agent.
Further preferably, the non-leaching antibacterial finishing agent is one or more of organosilicon quaternary ammonium salts, diphenyl ethers, organic nitrogen, nitrofurans, biguanides and chlorophenylimidazoles.
As an improvement, in the step S3, the first distributing plate, the second distributing plate and the spinneret plate are sequentially overlapped from top to bottom;
the first blanking channel is in a petal or orange-petal shape, the second blanking channel is arranged between adjacent petal-shaped parts of the first blanking channel, the first blanking channel is opposite to the first forming groove, and the second blanking channel is opposite to the second forming groove.
As an improvement, the first molding groove and the second molding groove are separated and molded by a partition piece, the second molding groove is arranged around the second molding groove at equal intervals, and the second molding groove is arranged in a heart shape.
As an improvement, in the step S4, the natural antibacterial finishing agent is a microcapsule antibacterial agent.
As an improvement, the natural antibacterial finishing agent is one or more of chitosan, antibacterial alcohols, antibacterial grease, antibacterial seaweed, antibacterial plants and antibacterial traditional Chinese medicines.
As a modification, the natural antibacterial finishing agent of chitosan is preferably chitosan or 0-hydroxymethyl chitosan.
As an improvement, in the step S4, the elastic shrinkage tube is arranged in one-to-one correspondence with the spinneret holes, and comprises an air bag tube and a conveying tube, wherein the air bag tube and the conveying tube are communicated through a communicating tube, the conveying tube conveys a natural antibacterial finishing agent, and the communicating tube is gradually shrunk from the conveying tube to the air bag tube;
the two ends of the air bag pipe are closed by rigid materials, and the communicating pipe is closed after the air bag pipe is inflated.
The utility model has the beneficial effects that:
1. according to the utility model, the polyester-nylon fiber is used as the core material, the nylon fiber is co-spun around the core material, the section shape of the core material formed by the polyester fiber is selected to be petal-shaped or orange petal-shaped, a filling area is formed between petal parts and is used for filling the nylon fiber, and the natural antibacterial finishing agent is matched for use, so that the organic antibacterial finishing agent is contained in the core material, and meanwhile, the natural antibacterial finishing agent is combined with the external nylon fiber, so that the polyester-nylon composite superfine fiber can meet the antibacterial effect, and meanwhile, the antibacterial agent harmful to human bodies is not excessively used;
2. according to the utility model, the second molding groove is arranged in a heart shape, so that the side wall of the polyester-nylon composite superfine fiber sprayed out through the spinneret plate is in an irregular groove shape, and the grooves are closed from inside to outside, so that the natural antibacterial finishing agent is attached to the surface of the nylon fiber with the surface still having adhesion when the polyester-nylon composite superfine fiber sprayed out through the spinneret plate passes through the particle area, the polyester-nylon composite superfine fiber continuously contracts along with the continuous reduction of the temperature, the opening of the filling area gradually becomes smaller, and the natural antibacterial finishing agent is locked in the filling area, so that the antibacterial treatment of the exterior of the polyester-nylon composite superfine fiber is completed;
3. according to the utility model, the elastic shrinkage tube is arranged, the particle area of the natural antibacterial finishing agent is formed by the elastic shrinkage tube, when the polyester-nylon composite superfine fiber passes through the elastic shrinkage tube, the natural antibacterial finishing agent in the particle area is continuously coated on the polyester-nylon composite superfine fiber, and the particle area is also contracted along with the inflation shrinkage of the elastic shrinkage tube, so that the space density of the natural antibacterial finishing agent is continuously increased, and the natural antibacterial finishing agent of the polyester-nylon composite superfine fiber is better adhered and combined;
4. according to the utility model, the elastic shrinkage tube is inflated with air with lower temperature than the fiber forming temperature, so that the elastic shrinkage tube is expanded, the space of a particle area is reduced, meanwhile, the temperature of the polyester-nylon composite superfine fiber is synchronously reduced, the polyester-nylon composite superfine fiber is shrunk, and the adhered natural antibacterial finishing agent is just shrunk and fixed by the shrunk polyester-nylon composite superfine fiber.
In conclusion, the utility model has the advantages of good sterilization effect, stable structure, high fiber strength, good elasticity and the like, and is especially suitable for the technical fields of polyester-nylon fibers and preparation thereof.
Drawings
FIG. 1 is a cross-sectional view of a bio-based antibacterial polyester-nylon composite ultrafine fiber of the utility model;
FIG. 2 is a partial structural view I of a cross-sectional view of the bio-based antibacterial polyester-nylon composite superfine fiber according to the present utility model;
FIG. 3 is a contracted state cross-sectional view of the bio-based antibacterial polyester-nylon composite superfine fiber of the present utility model;
FIG. 4 is a second partial structure diagram of a cross-sectional view of the bio-based antibacterial polyester-nylon composite superfine fiber according to the present utility model;
FIG. 5 is a schematic diagram of the production process of the present utility model;
FIG. 6 is a schematic perspective view of a spin pack according to the present utility model;
FIG. 7 is a schematic view showing a partial structure of a first distribution plate according to the present utility model;
FIG. 8 is a schematic view of a partial structure of a second distributor plate according to the present utility model;
FIG. 9 is a schematic illustration of the spinneret configuration of the present utility model;
FIG. 10 is a schematic perspective view of an elastic shrinkable tube of the present utility model;
FIG. 11 is a schematic cross-sectional view of an elastic shrink tube of the present utility model;
FIG. 12 is a schematic view of the structure of the polyester-nylon composite fiber of the present utility model passing through the granule zone.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Example 1:
as shown in fig. 1 to 4, a bio-based antibacterial polyester-nylon composite ultrafine fiber comprises:
polyester fiber core material 1, nylon fiber 2 and natural antibacterial finishing agent 3;
the polyester fiber core material 1 is positioned at the central position, the polyester fiber core material 1 contains an organic antibacterial finishing agent, the section of the polyester fiber core material 1 is in a petal shape or orange petal shape, the polyester fiber core material 1 comprises a core column 11 and a plurality of petal parts 12 which are arranged around the core column 11, and a filling area 13 is arranged between every two adjacent petal parts 12;
the nylon fiber 2 is filled in the filling area 13, is wound around the polyester fiber core material 1, and is provided with a concave area 21 at the outer edge of the nylon fiber 2;
the natural antibacterial finishing agent 3 is filled in the concave area 21, and the natural antibacterial finishing agent 3 is attached to the nylon fiber 2.
It should be noted that, in the molding process of the polyester-nylon composite superfine fiber, the section of the polyester fiber core material 1 is in a petal shape or an orange petal shape, a filling area 13 is arranged between adjacent petal parts 12 and is just used for filling the nylon fiber 2, the polyester fiber and the nylon fiber are cooled into the polyester-nylon composite superfine fiber through spinneret spraying, before the polyester-nylon composite superfine fiber is thoroughly cooled and shrunk and molded, the natural antibacterial finishing agent 3 is filled in the concave area 21, and along with continuous cooling and shrinkage of the polyester-nylon composite superfine fiber, the opening of the concave area 21 is closed, and the adsorption force of the polyester fiber and the nylon fiber on the unfixed front surface is matched, so that the natural antibacterial finishing agent 3 is just locked on the surface layer of the polyester-nylon composite superfine fiber, the natural antibacterial finishing agent 3 is matched with the machine antibacterial finishing agent in the core material, the antibacterial effect from inside to outside is achieved, meanwhile, the condition that the natural antibacterial finishing agent is almost harmless to the human body and the condition of exceeding the antibacterial agent is not reached, the use of the fixing agent is avoided, and the environment is more protected.
Further, the organic antibacterial finishing agent is a non-dissolution type antibacterial finishing agent, and is one or more selected from organosilicon quaternary ammonium salts, diphenyl ethers, organic nitrogen, nitrofurans, biguanides and chloromethylimidazoles, and the non-dissolution type antibacterial finishing agent can be combined with fabrics in a chemical bond, so that the fabrics treated by the finishing agent have durability for wearing and repeated washing. The method is to graft or polymerize the antibacterial agent on the fiber or mix the antibacterial agent into the spinning solution to achieve the purpose of controlling the release of active substances so as to obtain durability. The non-leaching antibacterial agent and the fiber are combined through firm chemical bonds, so that the agent cannot enter cells of microorganisms, the nucleus (genetic factors) is not influenced, and drug-resistant bacteria cannot appear; on the other hand, the antibacterial agent is not absorbed by the secretion of the human body and enters the human body, and has high safety to the human body and the environment, and the application is preferable.
Further described, the natural antibacterial finishing agent 3 is a microcapsule antibacterial agent, and the microcapsule antibacterial agent is prepared by wrapping one or more active ingredients of natural antibacterial extracts in microparticle capsules, and then fixing the active ingredients in fibers of the fabric, so that the fabric becomes a health care fabric. Some capsules in the fiber burst when contacting and rubbing with skin, and emit fragrance, antibacterial agent and the like, thereby playing the health care role. For antimicrobial microcapsules, the composition and thickness of the wall material can be generally varied to control the release rate of the microcapsule antimicrobial agent and to extend the duration of the application. The microcapsules can be combined on the textile by coating processing or padding together with fixing agents and the like.
The natural antibacterial finishing agent 3 is one or more of chitosan, antibacterial alcohols, antibacterial grease, antibacterial seaweed, antibacterial plants and antibacterial traditional Chinese medicines, wherein the chitosan comprises chitosan such as beta-1, 4-polyglucosamine (chitosan) and 0-hydroxymethyl chitosan (O-CMCh), the antibacterial alcohols comprise microencapsulated hinokitiol and hinokitiol, the antibacterial grease comprises castor oil, chinese toon oil and zanthoxylum oil, the antibacterial seaweed comprises seaweed agar-oligosaccharide, trehalose and algin, the antibacterial plants comprise aloe, mugwort, su Zi, houttuynia cordata, tea and bamboo extracts, and the antibacterial traditional Chinese medicines comprise coptis chinensis, astragalus mongholicus, houttuynia cordata, isatis root, bamboo juice and liquorice extracts.
The natural antimicrobial finish 3 of the present application is preferably chitosan or 0-hydroxymethyl chitosan.
Example 2:
as shown in fig. 5 to 12, a process for producing the bio-based antibacterial polyester-nylon composite ultrafine fiber according to embodiment one of the second embodiment of the present application is described with reference to embodiment one, and includes the following steps:
s1, mixing 75-85 parts of polyester chips, 25-30 parts of hexanediol, 25-35 parts of isophthalic acid and 5-10 parts of organic antibacterial finishing agent according to parts by weight, and adding the mixture into a screw extruder for melt extrusion to obtain a melt A;
s2, mixing 65-75 parts of nylon slices and 20-25 parts of graphene powder in parts by weight, and adding into a screw extruder for melt extrusion to obtain a melt B;
s3, conveying the melt A and the melt B to a spinning box body, conveying the melt A and the melt B to a first blanking channel 41 and a second blanking channel 42 on a first distribution plate 4 of a spinning assembly respectively, filling the melt A and the melt B in a first forming groove 51 and a second forming groove 52 of a second distribution plate 5, and forming a polyester-nylon composite fiber after being sprayed and cooled through a spinneret orifice 61 of a spinneret plate 6;
s4, conveying the polyester-nylon composite fiber formed by cooling downwards, and diffusing the particle area 70 of the natural antibacterial finishing agent 3, wherein the elastic shrinkage tube 7 outside the particle area 70 is inflated and shrunk, so that the natural antibacterial finishing agent 3 is adhered to the concave area 21 to form the natural antibacterial finishing module 14.
Specifically, in the step S3, the first distribution plate 4, the second distribution plate 5 and the spinneret plate 6 are sequentially overlapped from top to bottom;
the first discharging channel 41 is arranged in a petal or orange shape, the second discharging channel 42 is arranged between the adjacent petal-shaped parts 111 of the first discharging channel 41, the first discharging channel 41 is arranged opposite to the first forming groove 51, and the second discharging channel 42 is arranged opposite to the second forming groove 52.
Further, the first molding groove 51 and the second molding groove 52 are separated and molded by a partition 53, the second molding groove 52 is disposed around the second molding groove 52 at equal intervals, and the second molding groove 52 is disposed in a heart shape.
More specifically, the elastic shrinkage tubes 7 are arranged in one-to-one correspondence with the spinneret holes 61, the elastic shrinkage tubes 7 comprise air bag tubes 71 and conveying tubes 72, the air bag tubes 71 and the conveying tubes 72 are communicated and arranged through communicating tubes 73, the conveying tubes 72 convey the natural antibacterial finishing agent 3, the communicating tubes 73 are gradually shrunk from the conveying tubes 72 to the air bag tubes 71, so that when the air bag tubes 71 expand, the communicating tubes 73 can be quickly closed, and the natural antibacterial finishing agent 3 is prevented from flowing out;
the two ends of the air bag tube 71 are provided with a closing-in port of a rigid material, and the purpose is to prevent the natural antibacterial finishing agent 3 from flowing out when the air bag tube 71 is inflated.
It should be noted that, after the melt a is input into the first blanking channel 41, then enters into the first molding channel 51, and the melt B is input into the second blanking channel 42, then enters into the second molding channel 52, the first molding channel 51 and the second molding channel 52 are separated by the separator 53, and after the melt a and the melt B are sprayed out through the spinneret plate 6, the melt a and the melt B are just cooled to form the polyester fiber core material 1 and the nylon fiber 2, and the polyester fiber core material 1 and the nylon fiber 2 are mutually compounded to form the polyester-nylon composite superfine fiber.
The formed polyester-nylon composite superfine fiber passes through the corresponding air bag pipe 71, and the air bag pipe 71 is filled with the microcapsule antibacterial agent which is input through the conveying pipe 72 to form the granule area 70, and as the polyester-nylon composite superfine fiber is not completely cooled and molded at the moment, the opening of the concave area 21 on the polyester-nylon composite superfine fiber is not closed, so that the microcapsule antibacterial agent just can enter the concave area 21 through the opening, and along with the cooling and shrinkage molding of the polyester-nylon composite superfine fiber, the opening of the concave area 21 continuously shrinks, and finally the opening is closed, so that the microcapsule antibacterial agent is locked in the concave area 21, and the fixation of the microcapsule antibacterial agent is completed.
Further, the air bag tube 71 can be inflated through the air inlet nozzle to continuously expand, so that the space of the particle area 70 is continuously extruded, the microcapsule antibacterial agent is continuously extruded into the concave area 21, and the air bag tube 71 is filled with gas with a temperature lower than the fiber forming temperature, so that the passing polyester-nylon composite superfine fiber is just cooled, the polyester-nylon composite superfine fiber is just contracted until the opening on the polyester-nylon composite superfine fiber is contracted to be closed, and it is worth emphasizing that the time for the air bag tube 71 to expand and recover once is 2-3S, so that the air bag tube 71 can be continuously expanded and recovered to cover the polyester-nylon composite superfine fiber in the conveying process.
Further, during the expansion process of the air bag tube 71, the communicating tube 73 is closed by expansion, so that the microcapsule antibacterial agent in the granule area will not overflow, and when the air bag tube 71 is expanded to a limit state, a sufficient gap is still left between the inner side wall of the air bag tube 71 and the polyester-nylon composite superfine fiber.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. A bio-based antibacterial polyester-nylon composite superfine fiber, which is characterized by comprising:
the polyester fiber core material (1), nylon fiber (2) and natural antibacterial finishing agent (3);
the polyester fiber core material (1) is positioned at the central position, the polyester fiber core material (1) contains an organic antibacterial finishing agent, the section of the polyester fiber core material (1) is in a petal shape or an orange petal shape, the polyester fiber core material (1) comprises a core column (11) and a plurality of petal parts (12) which are arranged around the core column (11), and filling areas (13) are arranged between the adjacent petal parts (12);
the nylon fiber (2) is filled in the filling area (13), is wound around the polyester fiber core material (1) and is provided with a concave area (21) at the outer edge of the nylon fiber (2);
the natural antibacterial finishing agent (3) is filled in the concave area (21), and the natural antibacterial finishing agent (3) is attached to the nylon fiber (2).
2. A process for producing the bio-based antibacterial polyester-nylon composite ultrafine fiber of claim 1, which comprises the following steps:
s1, mixing 75-85 parts of polyester chips, 25-30 parts of hexanediol, 25-35 parts of isophthalic acid and 5-10 parts of organic antibacterial finishing agent according to parts by weight, and adding the mixture into a screw extruder for melt extrusion to obtain a melt A;
s2, mixing 65-75 parts of nylon slices and 20-25 parts of graphene powder in parts by weight, and adding into a screw extruder for melt extrusion to obtain a melt B;
s3, conveying the melt A and the melt B to a spinning box body, conveying the melt A and the melt B to a first blanking channel (41) and a second blanking channel (42) on a first distribution plate (4) of a spinning assembly respectively, filling the first blanking channel and the second blanking channel in a first forming groove (51) and a second forming groove (52) of a second distribution plate (5), and forming polyester-nylon composite fibers after being sprayed and cooled through spinning holes (61) of a spinneret plate (6);
s4, conveying the polyester-nylon composite fiber formed by cooling downwards, and forming a natural antibacterial finishing module (14) by diffusing a particle area (70) of the natural antibacterial finishing agent (3), wherein an elastic shrinkage tube (7) at the outer side of the particle area (70) is inflated and shrunk to enable the natural antibacterial finishing agent (3) to be adhered to a concave area (21).
3. The production process of the bio-based antibacterial polyester-nylon composite superfine fiber according to claim 2, which is characterized in that:
in the step S1, the organic antibacterial finishing agent is a non-leaching antibacterial finishing agent.
4. The process for producing the bio-based antibacterial polyester-nylon composite superfine fiber according to claim 3, which is characterized in that:
the non-leaching antibacterial finishing agent is one or more of organosilicon quaternary ammonium salts, diphenyl ethers, organic nitrogen, nitrofurans, biguanides and chlorophenylimidazoles.
5. The production process of the bio-based antibacterial polyester-nylon composite superfine fiber according to claim 2, which is characterized in that:
in the step S3, the first distribution plate (4), the second distribution plate (5) and the spinneret plate (6) are sequentially overlapped from top to bottom;
the first blanking channel (41) is arranged in a petal or orange-petal shape, the second blanking channel (42) is arranged between adjacent petal-shaped parts (111) of the first blanking channel (41), the first blanking channel (41) is opposite to the first forming groove (51), and the second blanking channel (42) is opposite to the second forming groove (52).
6. The production process of the bio-based antibacterial polyester-nylon composite superfine fiber according to claim 2, which is characterized in that:
the first forming groove (51) and the second forming groove (52) are separated and formed through a partition piece (53), the second forming grooves (52) are arranged around the second forming grooves (52) at equal intervals, and the second forming grooves (52) are arranged in a heart shape.
7. The production process of the bio-based antibacterial polyester-nylon composite superfine fiber according to claim 2, which is characterized in that:
in the step S4, the natural antibacterial finishing agent (3) is a microcapsule antibacterial agent.
8. The production process of the bio-based antibacterial polyester-nylon composite superfine fiber according to claim 7, which is characterized in that:
the natural antibacterial finishing agent (3) is one or more of chitosan, antibacterial alcohols, antibacterial oils, antibacterial seaweed, antibacterial plants and antibacterial traditional Chinese medicines.
9. The production process of the bio-based antibacterial polyester-nylon composite superfine fiber according to claim 8, which is characterized in that:
the natural antibacterial finishing agent (3) of chitosan is preferably chitosan or 0-hydroxymethyl chitosan.
10. The production process of the bio-based antibacterial polyester-nylon composite superfine fiber according to claim 2, which is characterized in that:
in the step S4, the elastic shrinkage tubes (7) are arranged in one-to-one correspondence with the spinneret holes (61), the elastic shrinkage tubes (7) comprise air bag tubes (71) and conveying tubes (72), the air bag tubes (71) and the conveying tubes (72) are communicated and arranged through communicating tubes (73), the conveying tubes (72) convey natural antibacterial finishing agents (3), and the communicating tubes (73) are gradually shrunk from the conveying tubes (72) to the air bag tubes (71);
the two ends of the air bag pipe (71) are closed by rigid materials, and the communicating pipe (73) is closed after the air bag pipe (71) is inflated.
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