CN110318147B - Antibacterial cationic polyester blended fabric and preparation process thereof - Google Patents
Antibacterial cationic polyester blended fabric and preparation process thereof Download PDFInfo
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- CN110318147B CN110318147B CN201910472189.7A CN201910472189A CN110318147B CN 110318147 B CN110318147 B CN 110318147B CN 201910472189 A CN201910472189 A CN 201910472189A CN 110318147 B CN110318147 B CN 110318147B
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- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
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- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 1
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- 229940098232 yersinia enterocolitica Drugs 0.000 description 1
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Classifications
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- 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
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
-
- 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
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/02—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements ultrasonic or sonic; Corona discharge
-
- 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
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/07—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
- D06M11/11—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
- D06M11/155—Halides of elements of Groups 2 or 12 of the Periodic Table
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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
- 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
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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
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/285—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acid amides or imides
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
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- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
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- 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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- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
- D10B2201/02—Cotton
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- 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]
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- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
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- D10B2401/00—Physical properties
- D10B2401/13—Physical properties anti-allergenic or anti-bacterial
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Abstract
The invention relates to an antibacterial cationic terylene blended fabric and a preparation process thereof, wherein the preparation process comprises the following steps: weaving the cation terylene blended yarn with the antibacterial function to prepare the cation terylene blended fabric with the antibacterial function, wherein the cation terylene blended yarn with the antibacterial function is prepared by respectively carding the cation terylene, the cotton fiber and the chitosan fiber which are processed by plasma, and then mixing and then sequentially carrying out the working procedures of drawing, roving, spinning and spooling, wherein the parameter of the spooling working procedure is as follows: the winding speed is 850-1200 m/min, and the tension is 5-8 cN; the finally prepared cation terylene blended fabric with the antibacterial function has the advantages of excellent elasticity, soft and comfortable hand feeling and good moisture absorption and air permeability. The invention solves the problems of poor antibacterial performance of cationic terylene, poor spinnability caused by small breaking strength, high rigidity and low cohesive force of chitosan fiber and the like, and the obtained fabric has good antibacterial function, mechanical property, moisture absorption and air permeability and low hairiness number.
Description
Technical Field
The invention belongs to the technical field of spinning, and relates to an antibacterial cationic terylene blended fabric and a preparation process thereof.
Background
Cationic dacron is also called cationic dye dyeable dacron, belongs to modified dacron products, and the modification treatment of the dacron can improve the color absorption performance of the fiber, reduce the crystallinity of the fiber, facilitate the permeation of dye molecules, facilitate the dyeing of the dye molecules and further improve the moisture absorption and air permeability of the fiber, so that the development and application of the cationic dacron are very wide.
The terylene is usually required to be modified when being developed and applied, the modified cationic terylene is dyed by cationic dye, the dyed fabric has bright color and high dye exhaustion rate, and the discharge of printing and dyeing wastewater is greatly reduced. However, because the antibacterial performance of the polyester fiber is poor, the growth of microorganisms can be caused by the use of various auxiliaries and finishing agents in the process of textile dyeing and finishing, and great threats are brought to the health and safety of people. Therefore, the development of novel antibacterial cationic polyester yarns and fabrics thereof is very important.
In general, antibacterial textiles can be obtained by two technical approaches, namely by means of functional finishing and by weaving directly with antibacterial fibers. Although the antibacterial textile obtained by the functional finishing method is convenient to operate and can achieve the antibacterial purpose, chemical reagents added in the functional finishing process can cause certain influence on the style and hand feeling of the textile, and the antibacterial durability, stability and safety are poor. Therefore, weaving by directly adopting the antibacterial fibers is a main method for obtaining the antibacterial fabric.
Chitin is a very abundant natural resource on the earth, is the only animal cellulose with positive charges found in nature so far, and has been widely applied to the fields of textile, food, cosmetics, biomedical engineering and the like due to the advantages of good biocompatibility, biodegradability, spectral antibacterial property, safety, no toxicity and the like. Chitosan is an N-deacetylated product of chitin, has a strong inhibiting effect on staphylococcus aureus, escherichia coli, yersinia enterocolitica and the like, and products made of chitosan fibers, such as non-woven fabrics, casting films, coated gauze and various medical dressings, have excellent application in promotion of wound healing, infection resistance and the like. However, the chitosan fiber has poor mechanical properties and is not suitable for direct processing, so that the preparation of the antibacterial fabric by weaving the chitosan fiber is difficult to achieve; in addition, because the friction coefficient of the surface of the chitosan fiber is small and the cohesive force of the fiber is low, the hairiness increase amplitude is large in the winding process, and the problem of poor cone yarn forming effect is easily caused.
Therefore, the research on the cationic terylene blended fabric with the antibacterial function and the preparation process thereof have very important significance.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a preparation process of an antibacterial cationic polyester blended fabric.
The production process of the cation terylene blended fabric with the antibacterial function comprises the following steps: the method comprises the following steps of copolymerizing dimethyl isophthalate-5-sodium Sulfonate (SIPM) with the terylene, introducing sulfonic acid groups into the molecular chain of the copolymerized terylene, dyeing the obtained cationic terylene by using a cationic dye, and greatly reducing the discharge of printing and dyeing wastewater, wherein the cationic dye has bright color and high dye adsorption rate, and can increase the antistatic, pilling resistance and moisture absorption performance of the terylene and improve the wearability of the terylene; then, cotton and chitosan fibers are selected and blended with the cotton and chitosan fibers to prepare the blended yarn with antibacterial property, the cationic terylene, the cotton fibers and the chitosan fibers are blended according to the mass ratio of 40-80: 10-50: 10-20, the problems of low strength and cohesive force of the antibacterial chitosan yarn are solved, the cost of the product is reduced, and the hairiness number of the yarn is reduced by adopting low winding speed and low tension during winding in the blending process; finally, weaving and post-finishing to obtain the antibacterial cationic terylene blended fabric.
In order to achieve the purpose, the invention adopts the following scheme:
a preparation method of cation dacron blending fabric with antibacterial function weaves cation dacron blending yarn with antibacterial function to obtain cation dacron blending fabric with antibacterial function, cation dacron, cotton fiber and chitosan fiber after the antibacterial function dacron blending yarn is processed through plasma are carded respectively, then drawing, roving, spinning and spooling are carried out in sequence after mixing, because cation dacron fiber surface is smooth, hygroscopic property is poor, cohesive force is small, hairiness is easy to generate in spinning process, the invention adopts plasma processing technology to process cation dacron fiber, so that the surface of the cation dacron fiber is grooved, surface friction among fibers is increased, nitrogen oxygen element content on the surface of the dacron fiber is increased, hygroscopic property is increased, and cohesive force among cation dacron fibers and among other fibers is increased, reducing hairiness, wherein the parameters of the spooling process are as follows: the winding speed is 850-1200 m/min, and the tension is 5-8 cN;
in the cotton carding process, the length distribution conditions and the impurity content of various fibers are different, the cationic terylene contains less impurities and has long fibers, the cotton fibers contain more impurities, the chitosan fibers are shorter and have low strength, and in order to ensure that the cotton carding process does not influence the strength and evenness of subsequent fiber finished yarns on the basis of ensuring the impurity removal effect, the three fibers are respectively subjected to cotton carding process treatment;
the problem of poor cheese forming effect is easily caused because the friction coefficient of the surface of the chitosan fiber is small and the cohesive force of the fiber is poor, and the hairiness increase amplitude is large in the winding process, and the relationship between the winding speed, the winding tension and the yarn hairiness is as follows: the higher the spooling speed is, the larger the friction force between the yarn and the grooved drum is, the larger the damage degree of the yarn is, and the hairiness number is increased; the winding tension is large, the friction force between the yarn and each component of the winding channel is increased, the cotton yarn hairiness is lengthened, and the hairiness number is increased; the winding speed is 850-1200 m/min, the tension is 5-8 cN, and compared with the prior art, the winding speed is relatively slow, the tension is relatively small, and the method is used for controlling the hairiness growth amplitude of a winding and ensuring good formation of cone yarns;
in addition, the winding tension and the winding speed corresponding to different fiber materials are different, the different influences of the winding speed on each fiber are considered when three fibers are blended together, the winding speed has obvious influence on yarn hairiness, the higher the speed is, the larger the balloon rotation angular speed is, the larger the centrifugal force is, the higher the friction and impact action of the yarn and each contact part is intensified, the surface friction of a bobbin package is increased, the fiber breakage on the surface of the yarn is increased, hairiness is formed, static electricity generated by intensified friction enables the soft fiber on the surface layer of the yarn to generate the centrifugal force and friction more easily, secondary hairiness is formed, the winding tension and the hairiness increase are in positive correlation, the larger the tension value is, the hairiness increase rate is higher, when the winding speed is 850-1200 m/min and the tension is 5-8 cN, the centrifugal force generated by balloon rotation is proper, the friction between the yarn and each contact part is proper, the impact action is reduced, and the static electricity generated by the friction on the surface of the package of the bobbin is reduced, so that the three fibers are easier to be in a relatively stable state, and the yarn forming effect cannot be influenced by excessive hairiness.
As a preferable scheme:
according to the preparation process of the antibacterial cationic polyester blended fabric, cationic polyester is dyeable polyester of normal-pressure cationic dye; the mass ratio of the cationic polyester fibers, the cotton fibers and the chitosan fibers after the plasma treatment is 40-80: 10-50: 10-20; respectively cleaning and drying the cationic terylene before and after plasma treatment, soaking the cationic terylene in absolute ethyl alcohol before treatment, fully washing the cationic terylene in an ultrasonic washer for 20-120 min, washing the cationic terylene with deionized water, drying the cationic terylene in a 60 ℃ drying oven, washing the cationic terylene with deionized water for multiple times after treatment, and drying the cationic terylene in the 60 ℃ drying oven; the plasma treatment process of the cationic terylene comprises the following steps: firstly, flatly paving cationic polyester on a steel wire mesh, then placing the polyester in a plasma processing chamber, respectively adjusting the power output of a power supply of a plasma machine and the pressure of a vacuum chamber to 150-500 w and 10-100 Pa, and introducing any one of oxygen, argon or nitrogen for processing for 40-200 s;
the chitosan fiber can be blended with various fibers, and the performance of the yarn is closely related to the proportion of the chitosan fiber in the blended yarn; when the proportion of the chitosan fiber in the yarn is 5-15%, the yarn has good spinnability, and the linear density of the yarn can reach 9.5 tex; when the content of the chitosan fiber in the blended yarn is 10-20%, the benefit and the functionality of the yarn are the best; however, due to the characteristics of low color absorbing temperature and strong color absorbing capability of the chitosan fiber, the problems of poor level-dyeing property of blended yarns and poor mechanical property of the blended yarns often occur in the dyeing process; the cationic terylene has the characteristics of good strength, bright dyeing tone, good deep dyeing property, high moisture absorption property, good sunlight fastness and fading fastness, and the dyeing property is very excellent; the cotton fibers have good hygroscopicity, soft hand feeling and comfortable wearing, and the comfort level of the fabric can be increased, so that the mass ratio of the cationic polyester fibers, the cotton fibers and the chitosan fibers after plasma treatment is slightly higher than that of the cationic polyester fibers and the cotton fibers, and if the ratio of the cationic polyester fibers to the cotton fibers is too small, the yarn strength is affected.
The preparation process of the cation terylene blended fabric with the antibacterial function comprises the following parameters of cotton carding process: the cylinder speed is 200-400 r/min, the licker-in speed is 600-800 r/min, the doffer speed is 20-40 r/min, the cover plate speed is 80-150 mm/min, and the raw sliver ration is 5-22 g/5 m;
the cylinder speed of the prior art is generally 200-500 r/min, the licker-in speed is generally 600-1000 r/min, but in the carding process, because the modulus of chitosan fibers is high, the rigidity is high, the fiber surfaces are flat, the cohesive force among the fibers is poor in the carding process, and the cationic polyester fibers are easy to generate static electricity, the cylinder speed is 200-400 r/min, the licker-in speed is 600-800 r/min, and the winding of the fibers on the licker-in is reduced by reducing the cylinder speed and the licker-in speed in the carding process, so that the fiber damage is reduced;
pre-drawing is firstly carried out during drawing, then two mixing processes are carried out, and parameters of the drawing process are as follows: pre-drying the mixture, wherein the pre-drying quantity is 10-18 g/5m, and 4-8 pieces of the mixture are combined; the quantitative mixing amount is 10-16 g/5m, 5-9 pieces are combined, and the back zone drafting multiple is 1-3 times; the quantitative ratio of the mixed second yarn is 10-15 g/5m, 5-9 yarns are combined, the back zone drafting multiple is 1-3 times, and the drawing speed is 150-230 m/min;
parameters of the drawing process in the prior art are generally as follows: pre-drying the mixed solution, wherein the pre-drying quantitative is 15-18 g/5m, and 6-8 mixed solutions are adopted; the first dry mixing ration is 16-22 g/5m, the second dry mixing ration is 15-20 g/5m, 6-8 pieces are combined, the drafting multiple of a rear zone is 2-4 times, the drawing speed is 200-400 m/min, and on the basis of the length of a cotton fiber main body, the distances between a front zone, a middle zone and a rear zone are respectively increased by 0-12 mm compared with the prior art, so that the average dry weight of the spun cooked strips is ensured to be 0.5-1.5 g/5 m; in addition, because of the problems of short length, low strength, low cohesive force among fibers and different lengths of the three fibers in the drawing process of the chitosan fiber, the invention adopts the slower drawing speed; for the reasons, the drawing process adopts the process principle of large gauge and low speed;
in addition, the section of the chitosan fiber is approximate to a circle, the fiber is thin, the specific surface area is relatively large, and the friction factor is also large, so that static electricity and static electricity accumulation are easily generated, and the cationic terylene is also easy to generate static electricity; in order to prevent static electricity in the spinning process, the temperature and the humidity of a workshop (the temperature is 25 ℃ and the humidity is 65%) need to be strictly controlled; in addition, in order to avoid static electrification of cations, anti-winding coating needs to be brushed on the drawing rubber roller in advance, and heating and humidifying are carried out in the whole drawing process;
parameters of the roving process: the quantitative ratio of the drawn slivers is 0.5-1.5 g/5m, the quantitative ratio of the dry roving is 3-5 g/10m, the twist factor is 80-90, the draft multiple of the rear zone is 1-2, the roller gauge is 10mm multiplied by 26mm multiplied by 28mm, and the speed of the front roller is 100-200 r/min;
because the cohesive force among the chitosan fibers is low, if the chitosan fibers are spun according to the traditional chemical fiber varieties, qualified semi-finished products or finished products are difficult to produce in the working procedure and the subsequent working procedures, in order to avoid the problems, the drawn sliver quantitative value, the roving dry quantitative value and the roving twist factor adopted in the roving working procedure are larger than those in the prior art, and the roving process follows the principles of low speed, large twist, large spacing and proper twist factor, so that the purpose of reducing the broken ends of the roving is achieved;
parameters of the spinning process: the ingot speed is 10000-14000 r/min, the roller gauge is 18mm multiplied by 33mm, the drafting multiple of the rear zone is 1-3, and the twist coefficient is 360-380;
the spinning process is a process of drafting the roving into spun yarn with a certain number by a spinning machine, and is a key process for ensuring the quality of finished yarn, and the key process is to improve the evenness of finished yarn and reduce finished yarn neps; because the single fiber yarn count is small, the breaking strength is low, in order to ensure the yarn forming strength and reduce the broken end rate in the spinning process, the invention adjusts the process parameters, namely the spinning process adopts a larger roller gauge, a smaller back zone draft multiple, a lower spinning spindle speed and a larger twist factor compared with the prior art;
the number of nine-grade yarn faults of the yarn output in the spooling process is 0, and the number of hairiness of 3mm of the cone yarn is 55-65 pieces/10 cm.
The preparation process of the antibacterial cationic polyester blended fabric comprises the following parameters of the drawing process: pre-drying the mixture, wherein the pre-drying quantitative is 15-17 g/5m, and 5-6 pieces are combined; the quantitative mixing amount is 15-16 g/5m, 6-7 pieces are combined, and the back zone drafting multiple is 1.5-2 times; the quantitative ratio of the mixed second dry is 15-16 g/5m, 7-8 dry mixed dry mixed dry.
According to the preparation process of the cation terylene blended fabric with the antibacterial function, the parameters of the roving process are as follows: the dry weight of the roving is 4-5 g/10m, the twist coefficient is 80-85, the drafting multiple of the rear zone is 1-1.3, and the speed of the front roller is 140-160 r/min.
The preparation process of the cation terylene blended fabric with the antibacterial function comprises the following parameters in the spinning process: the ingot speed is 12000-13800 r/min, and the back zone draft multiple is 1.5-1.8.
According to the preparation process of the antibacterial cationic polyester blended fabric, a circular knitting machine is adopted for weaving, the machine type is WD/0.8F-SOMJ, the needle number is 24-28 needles/inch, the total needle number is 1100-2900, the number of loop forming systems is 4-20, and the diameter of a machine cylinder is 8-20 inches.
The preparation process of the cation terylene blended fabric with the antibacterial function also comprises the following steps of after-finishing after weaving:
(1) performing decontamination treatment, namely soaking the fabric in decontamination finishing liquid at the temperature of 25-35 ℃ for 20-30 min, padding and drying, wherein the decontamination finishing liquid is prepared by adjusting the pH value of water to be 3 and then adding cross-linked chitosan resin, a magnesium chloride catalyst and an organic fluorine compound, the mass ratio of the cross-linked chitosan resin, the magnesium chloride catalyst and the organic fluorine compound in each liter of water is 5-8: 4-5: 35-40, the padding mangle ratio is 50-80%, the drying temperature is 90-100 ℃, and the drying time is 10-40 min; the organic fluorine compound is a fluorine surfactant, the temperature of the decontamination finishing liquid is set within the range of 25-35 ℃, the temperature range can not damage the performance of the decontamination liquid, the temperature condition of fabric decontamination operation is also met, the effect of the decontamination liquid can be fully exerted after the fabric is soaked in the decontamination liquid for 20-30 min, and the decontamination effect of the fabric can be reduced after the fabric is soaked for a long time;
(2) the first antibacterial treatment, namely soaking the fabric in an antibacterial solution with the temperature of 40-55 ℃ for 1-2 hours, heating to 60-90 ℃, and soaking for 3-4 hours, wherein the antibacterial solution is prepared by dissolving an antibacterial agent precursor (such as methacrylamide and the like) and an initiator (such as azodiisopropyl imidazoline) in water and reacting for 2-5 min at the temperature of 60-80 ℃, wherein the molar ratio of the antibacterial agent precursor to the initiator in every 80-120 mL of water is 0.2-0.4: 0.03-0.06; soaking the fabric in a mild temperature environment, raising the temperature after the fabric is completely soaked to enable the antibacterial liquid to be firmly attached to the fabric, wherein the elasticity and stress of the fabric are damaged when the temperature is too high, and the treatment of the antibacterial liquid on the fabric is reduced when the temperature is too low;
(3) performing second antibacterial treatment, namely uniformly coating the antibacterial liquid on the surface of the fabric, wherein the coating amount is 10-20 g/m2Drying at 60-90 ℃ until the water content is less than or equal to 6%, and then drying and crosslinking at 100 ℃ for 5-10 min; the temperature is 60-90 DEG CThe antibacterial solution coated on the fabric can be well fixed on the fabric, the performance of the fabric can be damaged when the temperature is too high, and the fixation rate of the antibacterial solution on the fabric is reduced when the temperature is too low; because the fabric contains cotton fibers, the curing and crosslinking time in the environment of 100 ℃ is not suitable for long time treatment, otherwise, the properties of the fibers and the fabric are damaged;
(4) and (4) post-treatment, namely washing the fabric, dewatering, drying in a loose manner, tentering, setting and inspecting in sequence.
According to the preparation process of the antibacterial functional cationic polyester blended yarn, the breaking strength of the antibacterial functional cationic polyester blended yarn is 177-338 cN, the breaking elongation is 6.69-17.02%, the moisture regain is 1.14-6.75%, the performance is excellent, and a good foundation is provided for weaving the fabric.
The antibacterial functional cationic polyester blended fabric prepared by the preparation process of the antibacterial functional cationic polyester blended fabric has good elasticity, moisture absorption and air permeability, the air permeability is 700-860 mm/s, the moisture regain is 1.2% -6.0%, the elongation at break is 40% -210% through tests, and in addition, the antibacterial functional cationic polyester blended fabric also has a certain antibacterial effect, and the antibacterial rate of the fabric to escherichia coli and staphylococcus aureus is 60% -80% through tests.
Has the advantages that:
(1) the cationic polyester blended fabric with the antibacterial function, disclosed by the invention, has the antibacterial function of a chitosan fiber fabric, excellent moisture absorption and air permeability of a cotton fiber fabric, good mechanical properties and dyeing properties of a cationic polyester fiber fabric and the like;
(2) the preparation process of the antibacterial cationic polyester blended fabric solves the problems of poor spinnability and the like caused by small breaking strength, high rigidity and low cohesive force of chitosan fibers;
(3) according to the preparation process of the antibacterial cationic polyester blended fabric, the winding speed is 850-1200 m/min, the tension is 5-8 cN, and compared with the prior art, the winding speed is relatively low, the tension is relatively low, the hairiness number of yarns is reduced, and the problem of poor forming effect of cheese yarn can be solved;
(4) the preparation process of the cationic polyester blended fabric with the antibacterial function is beneficial to developing high-quality fabrics with antibacterial performance and final products, so that the added value and the economic benefit of the products are improved.
Drawings
FIG. 1 is a graph showing the breaking strength of the cationic blended fabrics described in example 5, comparative example 1, and comparative example 2;
FIG. 2 is a graphical representation of the elongation at break of the cationic blended fabrics described in example 5, comparative example 1, and comparative example 2;
FIG. 3 is a Scanning Electron Microscope (SEM) image of the surface morphology of the untreated cationic terylene in example 1 (in the image, (a) is a whole image, and (b) is a partial enlarged view);
fig. 4 is a Scanning Electron Microscope (SEM) image of the surface morphology of the cationic dacron after the plasma treatment in example 1 (in the figure, (a) is a whole image, and (b) is a partially enlarged image).
Fig. 5 is a Scanning Electron Microscope (SEM) image of the surface morphology of the untreated cationic polyester fabric of example 1 (in the figure, (a) is a whole image, and (b) is a partial enlarged view);
fig. 6 is a Scanning Electron Microscope (SEM) image of the surface morphology of the cationic polyester fabric after the plasma treatment in example 1 (in the image, (a) is a whole image, and (b) is a partially enlarged image).
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Example 1
A preparation process of an antibacterial cationic polyester blended fabric comprises the following specific steps:
(1) preparing a cationic polyester raw sliver:
(1.1) carrying out modification treatment on the polyester fiber, and copolymerizing dimethyl isophthalate-5-sodium Sulfonate (SIPM) and the polyester to obtain a cationic polyester fiber;
(1.2) firstly, the cationic terylene as shown in figure 3 is soaked in absolute ethyl alcohol and fully washed in an ultrasonic washer for 60min, and then is dried in an oven at 60 ℃ after being washed by deionized water, then firstly, the cationic terylene is flatly laid on the steel wire mesh, then the cationic terylene is placed in a plasma processing chamber, then the output power of the power supply of the plasma machine and the pressure of the vacuum chamber are respectively adjusted to 150w and 10Pa, introducing argon gas for treatment for 40s, finally washing the cationic terylene by deionized water for multiple times, and then placing the cationic terylene in a 60 ℃ drying oven for drying to prepare the plasma-treated cationic terylene as shown in figure 4, weaving the cationic terylene before and after the plasma treatment into a fabric, measuring SEM images of the fabric as shown in figures 5 and 6 respectively, comparing figures 3-6, and showing that the surface of the cationic terylene is roughened by the plasma treatment and more uniform pits appear;
(1.3) carrying out opening pretreatment on the cation polyester fiber after plasma treatment, carding on a carding machine to obtain cation polyester fiber sliver, wherein the parameters of the cotton carding process are as follows: the cylinder speed is 200r/min, the licker-in speed is 600r/min, the doffer speed is 20r/min, the cover plate speed is 80mm/min, and the raw sliver ration is 5g/5 m;
(2) preparing cotton fiber raw strips: opening and preprocessing cotton fibers, carding on a carding machine to obtain cotton fiber slivers, wherein parameters of a cotton carding process are as follows: the cylinder speed is 200r/min, the licker-in speed is 600r/min, the doffer speed is 20r/min, the cover plate speed is 80mm/min, and the raw sliver ration is 5g/5 m;
(3) preparing raw chitosan fiber strips: opening and pretreating chitosan fibers, carding on a carding machine to obtain chitosan fiber raw slivers, wherein parameters of a carding procedure are as follows: the cylinder speed is 200r/min, the licker-in speed is 600r/min, the doffer speed is 20r/min, the cover plate speed is 80mm/min, and the raw sliver ration is 5g/5 m;
(4) drawing: drawing the cationic polyester raw slivers, the cotton fiber raw slivers and the chitosan fiber raw slivers prepared in the steps (1), (2) and (3) on a drawing frame according to the mass ratio of 40:50:10 to obtain drawn slivers;
parameters of the drawing process: pre-drying at a quantitative of 10g/5m, and mixing 4; the quantitative ratio of the mixed powder is 10g/5m, 5 pieces of mixed powder are combined, and the drafting multiple of a rear zone is 1 time; the quantitative ratio of the mixed second yarn is 10g/5m, 5 yarns are combined, the drafting multiple of a rear zone is 1 time, and the drawing speed is 150 m/min;
(5) roving: drafting and twisting the drawn sliver prepared in the step (4) on a roving machine;
parameters of the roving process: the quantitative ratio of the drawn sliver is 0.5g/5m, the quantitative ratio of the roving dry is 3g/10m, the twist coefficient is 80, the drafting multiple of the rear zone is 1, the roller gauge is 10mm multiplied by 26mm multiplied by 28mm, and the speed of the front roller is 100 r/min;
(6) spinning: further drafting and twisting on a spinning machine to prepare blended yarns;
parameters of the spinning process: the ingot speed is 10000r/min, the roller gauge is 18mm multiplied by 33mm, the back zone draft multiple is 1, and the twist coefficient is 360;
the breaking strength of the finally prepared antibacterial functional cationic polyester blended yarn is 177cN, the breaking elongation is 6.69%, and the moisture regain is 1.14%;
(7) spooling: the process parameters of the spooling process are as follows: the winding speed is 1200m/min, and the tension is 8 cN;
the number of nine-grade yarn faults of the yarn output in the spooling process is 0, and the number of hairiness of 3mm of cone yarn is 65 per 10 cm;
(8) weaving: weaving the wound blended yarn by using a circular knitting machine, wherein the needle number is 24 needles/inch, the total needle number is 1100, the number of loop forming systems is 4, and the diameter of a machine cylinder is 8 inches;
(9) decontamination treatment: soaking the fabric in a decontamination finishing liquid at the temperature of 25 ℃ for 20min, padding and drying, wherein the decontamination finishing liquid is prepared by adding cross-linked chitosan resin, a magnesium chloride catalyst and a fluorine surfactant after adjusting the pH value of water to be 3, the mass ratio of the cross-linked chitosan resin to the magnesium chloride catalyst to the fluorine surfactant in each liter of water is 5:4:35, the padding mangle ratio of padding is 50%, the drying temperature is 90 ℃ and the drying time is 10 min;
(10) first antibacterial treatment: soaking the fabric in an antibacterial solution at the temperature of 40 ℃ for 1 hour, heating to 60 ℃, and soaking for 3 hours, wherein the antibacterial solution is prepared by dissolving methacrylamide and azodiisopropyl imidazoline in water and reacting for 2 minutes at the temperature of 60 ℃, and the molar ratio of the methacrylamide to the azodiisopropyl imidazoline in every 80mL of water is 0.2: 0.03;
(11) and (3) second antibacterial treatment: uniformly coating the antibacterial liquid on the surface of the fabric, wherein the coating amount is 10g/m2Baking at 60 deg.C until the water content is 6%, and baking at 100 deg.C for crosslinking for 5 min;
(12) and (3) post-treatment: washing, dewatering, drying in a loose mode, tentering, setting and inspecting the fabric in sequence after the fabric is washed;
the finally prepared antibacterial cationic polyester blended fabric has the air permeability of 700mm/s, the moisture regain of 1.2% and the elongation at break of 40%.
Example 2
A preparation process of an antibacterial cationic polyester blended fabric comprises the following specific steps:
(1) preparing a cationic polyester raw sliver:
(1.1) carrying out modification treatment on the polyester fiber, and copolymerizing dimethyl isophthalate-5-sodium Sulfonate (SIPM) and the polyester to obtain a cationic polyester fiber;
(1.2) firstly, soaking cationic terylene in absolute ethyl alcohol, fully washing the cationic terylene in an ultrasonic washer for 20min, washing the cationic terylene with deionized water, drying the cationic terylene in a 60 ℃ drying oven, firstly, flatly paving the cationic terylene on a steel wire mesh, then placing the cationic terylene in a plasma processing chamber, respectively adjusting the power output of a power supply of a plasma machine and the pressure of a vacuum chamber to 200w and 20Pa, introducing nitrogen for processing for 100s, finally, washing the cationic terylene with the deionized water for multiple times, and then placing the cationic terylene in the 60 ℃ drying oven for drying;
(1.3) carrying out opening pretreatment on the cation polyester fiber after plasma treatment, carding on a carding machine to obtain cation polyester fiber sliver, wherein the parameters of the cotton carding process are as follows: the cylinder speed is 400r/min, the licker-in speed is 800r/min, the doffer speed is 40r/min, the cover plate speed is 150mm/min, and the raw sliver ration is 10g/5 m;
(2) preparing cotton fiber raw strips: opening and preprocessing cotton fibers, carding on a carding machine to obtain cotton fiber slivers, wherein parameters of a cotton carding process are as follows: the cylinder speed is 400r/min, the licker-in speed is 800r/min, the doffer speed is 40r/min, the cover plate speed is 150mm/min, and the raw sliver ration is 10g/5 m;
(3) preparing raw chitosan fiber strips: opening and pretreating chitosan fibers, carding on a carding machine to obtain chitosan fiber raw slivers, wherein parameters of a carding procedure are as follows: the cylinder speed is 400r/min, the licker-in speed is 800r/min, the doffer speed is 40r/min, the cover plate speed is 150mm/min, and the raw sliver ration is 10g/5 m;
(4) drawing: drawing the cationic polyester raw slivers, the cotton fiber raw slivers and the chitosan fiber raw slivers prepared in the steps (1), (2) and (3) on a drawing frame according to the mass ratio of 80:10:10 to obtain drawn slivers;
parameters of the drawing process: pre-drying at a quantitative of 10g/5m, and mixing 8; the quantitative ratio of the mixed powder is 10g/5m, 9 pieces of mixed powder are combined, and the drafting multiple of a rear zone is 3 times; the quantitative ratio of the mixed second yarn is 10g/5m, 9 yarns are combined, and the drafting multiple of the rear zone is 3 times of drawing speed 170 m/min;
(5) roving: drafting and twisting the drawn sliver prepared in the step (4) on a roving machine;
parameters of the roving process: the quantitative ratio of the drawn sliver is 1.5g/5m, the quantitative ratio of the roving dry is 5g/10m, the twist coefficient is 90, the drafting multiple of the rear zone is 2, the roller gauge is 10mm multiplied by 26mm multiplied by 28mm, and the speed of the front roller is 200 r/min;
(6) spinning: further drafting and twisting on a spinning machine to prepare blended yarns;
parameters of the spinning process: the ingot speed is 14000r/min, the roller gauge is 18mm multiplied by 33mm, the draft multiple of the rear zone is 3, and the twist coefficient is 380;
the breaking strength of the finally prepared antibacterial functional cationic polyester blended yarn is 195cN, the elongation at break is 8.99%, and the moisture regain is 3.67%;
(7) spooling: the process parameters of the spooling process are as follows: the winding speed is 1000m/min, and the tension is 7 cN;
the number of nine-grade yarn faults of the yarn output in the spooling process is 0, and the number of hairiness of 3mm of the cone yarn is 62/10 cm;
(8) weaving: weaving the wound blended yarn by a circular knitting machine, wherein the needle number is 28 needles/inch, the total needle number is 2900, the number of loop forming systems is 20, and the diameter of a machine cylinder is 20 inches;
(9) decontamination treatment: soaking the fabric in a decontamination finishing liquid at the temperature of 35 ℃ for 30min, padding and drying, wherein the decontamination finishing liquid is prepared by adding cross-linked chitosan resin, a magnesium chloride catalyst and a fluorine surfactant after adjusting the pH value of water to be 3, the mass ratio of the cross-linked chitosan resin to the magnesium chloride catalyst to the fluorine surfactant in each liter of water is 8:5:40, the padding mangle ratio of padding is 80%, the drying temperature is 100 ℃, and the drying time is 40 min;
(10) first antibacterial treatment: soaking the fabric in an antibacterial solution with the temperature of 55 ℃ for 2 hours, then heating to 90 ℃ and then soaking for 4 hours, wherein the antibacterial solution is prepared by dissolving methacrylamide and azodiisopropyl imidazoline in water and reacting for 5 minutes at 80 ℃, and the molar ratio of the methacrylamide to the azodiisopropyl imidazoline in each 120mL of water is 0.4: 0.06;
(11) and (3) second antibacterial treatment: uniformly coating the antibacterial liquid on the surface of the fabric, wherein the coating amount is 20g/m2Baking at 90 deg.C until the water content is 5%, and baking at 100 deg.C for crosslinking for 10 min;
(12) and (3) post-treatment: washing, dewatering, drying in a loose mode, tentering, setting and inspecting the fabric in sequence after the fabric is washed;
the finally prepared antibacterial functional cationic polyester blended fabric has the air permeability of 750mm/s, the moisture regain of 2.2% and the elongation at break of 80%.
Example 3
A preparation process of an antibacterial cationic polyester blended fabric comprises the following specific steps:
(1) preparing a cationic polyester raw sliver:
(1.1) carrying out modification treatment on the polyester fiber, and copolymerizing dimethyl isophthalate-5-sodium Sulfonate (SIPM) and the polyester to obtain a cationic polyester fiber;
(1.2) firstly, soaking cationic terylene in absolute ethyl alcohol, fully washing the cationic terylene in an ultrasonic washer for 40min, washing the cationic terylene with deionized water, drying the cationic terylene in a 60 ℃ drying oven, firstly, flatly paving the cationic terylene on a steel wire mesh, then placing the cationic terylene in a plasma processing chamber, respectively adjusting the power output of a power supply of a plasma machine and the pressure of a vacuum chamber to 150w and 15Pa, introducing oxygen for processing for 100s, finally, washing the cationic terylene with the deionized water for multiple times, and then placing the cationic terylene in the 60 ℃ drying oven for drying;
(1.3) carrying out opening pretreatment on the cation polyester fiber after plasma treatment, carding on a carding machine to obtain cation polyester fiber sliver, wherein the parameters of the cotton carding process are as follows: the cylinder speed is 200r/min, the licker-in speed is 600r/min, the doffer speed is 20r/min, the cover plate speed is 80mm/min, and the raw sliver ration is 15g/5 m;
(2) preparing cotton fiber raw strips: opening and preprocessing cotton fibers, carding on a carding machine to obtain cotton fiber slivers, wherein parameters of a cotton carding process are as follows: the cylinder speed is 200r/min, the licker-in speed is 600r/min, the doffer speed is 20r/min, the cover plate speed is 80mm/min, and the raw sliver ration is 15g/5 m;
(3) preparing raw chitosan fiber strips: opening and pretreating chitosan fibers, carding on a carding machine to obtain chitosan fiber raw slivers, wherein parameters of a carding procedure are as follows: the cylinder speed is 200r/min, the licker-in speed is 600r/min, the doffer speed is 20r/min, the cover plate speed is 80mm/min, and the raw sliver ration is 15g/5 m;
(4) drawing: drawing the cationic polyester raw slivers, the cotton fiber raw slivers and the chitosan fiber raw slivers prepared in the steps (1), (2) and (3) on a drawing frame according to the mass ratio of 50:35:15 to obtain drawn slivers;
parameters of the drawing process: pre-drying at a quantitative of 15g/5m, and mixing 5; the quantitative ratio of the mixed first dry is 15g/5m, 6 pieces are combined, and the drafting multiple of the rear zone is 1.5 times; the quantitative ratio of the mixed second yarn is 15g/5m, 7 yarns are combined, the drafting multiple of a rear zone is 1.5 times, and the drawing speed is 190 m/min;
(5) roving: drafting and twisting the drawn sliver prepared in the step (4) on a roving machine;
parameters of the roving process: the quantitative ratio of the drawn sliver is 1.0g/5m, the quantitative ratio of the roving dry is 4g/10m, the twist coefficient is 80, the drafting multiple of the rear zone is 1, the roller gauge is 10mm multiplied by 26mm multiplied by 28mm, and the speed of the front roller is 140 r/min;
(6) spinning: further drafting and twisting on a spinning machine to prepare blended yarns;
parameters of the spinning process: the ingot speed is 12000r/min, the roller gauge is 18mm multiplied by 33mm, the drafting multiple of the rear zone is 1.5, and the twist coefficient is 360;
the breaking strength of the finally prepared antibacterial functional cationic polyester blended yarn is 245cN, the elongation at break is 9.26%, and the moisture regain is 3.44%;
(7) spooling: the process parameters of the spooling process are as follows: the spooling speed is 1100m/min, and the tension is 6 cN;
the number of nine-grade yarn faults of the yarn output in the spooling process is 0, and the number of hairiness of 3mm of cone yarn is 60 per 10 cm;
(8) weaving: weaving the wound blended yarn by using a circular knitting machine, wherein the needle number is 26 needles/inch, the total needle number is 1100, the number of loop forming systems is 10, and the diameter of a machine cylinder is 15 inches;
(9) decontamination treatment: soaking the fabric in a decontamination finishing liquid at the temperature of 30 ℃ for 25min, padding and drying, wherein the decontamination finishing liquid is prepared by adding cross-linked chitosan resin, a magnesium chloride catalyst and a fluorine surfactant after adjusting the pH value of water to be 3, the mass ratio of the cross-linked chitosan resin to the magnesium chloride catalyst to the fluorine surfactant in each liter of water is 6:4.5:38, the padding mangle ratio is 60%, the drying temperature is 95 ℃, and the drying time is 30 min;
(10) first antibacterial treatment: soaking the fabric in an antibacterial solution at the temperature of 45 ℃ for 1.5 hours, heating to 70 ℃, and soaking for 3.5 hours, wherein the antibacterial solution is prepared by dissolving methacrylamide and azodiisopropyl imidazoline in water and reacting for 3 minutes at the temperature of 70 ℃, and the molar ratio of the methacrylamide to the azodiisopropyl imidazoline in every 100mL of water is 0.3: 0.04;
(11) and (3) second antibacterial treatment: uniformly coating the antibacterial liquid on the surface of the fabric, wherein the coating amount is 15g/m2At temperature ofBaking at 70 deg.C until water content is 4%, and baking at 100 deg.C for crosslinking for 8 min;
(12) and (3) post-treatment: washing, dewatering, drying in a loose mode, tentering, setting and inspecting the fabric in sequence after the fabric is washed;
the finally prepared antibacterial functional cationic polyester blended fabric has the air permeability of 800mm/s, the moisture regain of 4.2% and the elongation at break of 100%.
Example 4
A preparation process of an antibacterial cationic polyester blended fabric comprises the following specific steps:
(1) preparing a cationic polyester raw sliver:
(1.1) carrying out modification treatment on the polyester fiber, and copolymerizing dimethyl isophthalate-5-sodium Sulfonate (SIPM) and the polyester to obtain a cationic polyester fiber;
(1.2) firstly, soaking cationic terylene in absolute ethyl alcohol, fully washing the cationic terylene in an ultrasonic washer for 80min, washing the cationic terylene with deionized water, drying the cationic terylene in a 60 ℃ drying oven, firstly, flatly paving the cationic terylene on a steel wire mesh, then placing the cationic terylene in a plasma processing chamber, respectively adjusting the power output of a power supply of a plasma machine and the pressure of a vacuum chamber to 500w and 100Pa, introducing argon for processing for 180s, finally, washing the cationic terylene with the deionized water for multiple times, and then placing the cationic terylene in the 60 ℃ drying oven for drying;
(1.3) carrying out opening pretreatment on the cation polyester fiber after plasma treatment, carding on a carding machine to obtain cation polyester fiber sliver, wherein the parameters of the cotton carding process are as follows: the cylinder speed is 300r/min, the licker-in speed is 700r/min, the doffer speed is 30r/min, the cover plate speed is 100mm/min, and the raw sliver ration is 20g/5 m;
(2) preparing cotton fiber raw strips: opening and preprocessing cotton fibers, carding on a carding machine to obtain cotton fiber slivers, wherein parameters of a cotton carding process are as follows: the cylinder speed is 300r/min, the licker-in speed is 700r/min, the doffer speed is 30r/min, the cover plate speed is 100mm/min, and the raw sliver ration is 20g/5 m;
(3) preparing raw chitosan fiber strips: opening and pretreating chitosan fibers, carding on a carding machine to obtain chitosan fiber raw slivers, wherein parameters of a carding procedure are as follows: the cylinder speed is 300r/min, the licker-in speed is 700r/min, the doffer speed is 30r/min, the cover plate speed is 100mm/min, and the raw sliver ration is 20g/5 m;
(4) drawing: drawing the cationic polyester raw slivers, the cotton fiber raw slivers and the chitosan fiber raw slivers prepared in the steps (1), (2) and (3) on a drawing frame according to the mass ratio of 60:30:16 to obtain drawn slivers;
parameters of the drawing process: pre-drying at a quantitative rate of 18g/5m, and mixing 6; the quantitative ratio of the first mixed dry is 16g/5m, 7 pieces of mixed dry are combined, and the drafting multiple of the rear zone is 2 times; the quantitative ratio of the mixed second yarn is 16g/5m, 8 yarns are combined, the drafting multiple of a rear zone is 2 times, and the drawing speed is 210 m/min;
(5) roving: drafting and twisting the drawn sliver prepared in the step (4) on a roving machine;
parameters of the roving process: the quantitative ratio of the drawn sliver is 0.9g/5m, the quantitative ratio of the roving dry is 5g/10m, the twist coefficient is 85, the drafting multiple of the rear zone is 1.3, the roller gauge is 10mm multiplied by 26mm multiplied by 28mm, and the speed of the front roller is 160 r/min;
(6) spinning: further drafting and twisting on a spinning machine to prepare blended yarns;
parameters of the spinning process: the ingot speed is 13800r/min, the roller gauge is 18mm multiplied by 33mm, the drafting multiple of the rear zone is 1.8, and the twist coefficient is 380;
the breaking strength of the finally prepared antibacterial functional cationic polyester blended yarn is 288cN, the breaking elongation is 12.02%, and the moisture regain is 5.65%;
(7) spooling: the process parameters of the spooling process are as follows: the winding speed is 900m/min, and the tension is 5 cN;
the number of nine-grade yarn faults of the yarn output in the spooling process is 0, and the number of hairiness of 3mm of cone yarn is 58 per 10 cm;
(8) weaving: weaving the wound blended yarn by a circular knitting machine, wherein the needle number is 26 needles/inch, the total needle number is 2900, the number of loop forming systems is 20, and the diameter of a machine cylinder is 10 inches;
(9) decontamination treatment: soaking the fabric in a decontamination finishing liquid at the temperature of 26 ℃ for 25min, padding and drying, wherein the decontamination finishing liquid is prepared by adding cross-linked chitosan resin, a magnesium chloride catalyst and a fluorine surfactant after adjusting the pH value of water to be 3, the mass ratio of the cross-linked chitosan resin to the magnesium chloride catalyst to the fluorine surfactant in each liter of water is 7:4:35, the padding mangle ratio of padding is 60%, the drying temperature is 100 ℃, and the drying time is 30 min;
(10) first antibacterial treatment: soaking the fabric in an antibacterial solution at the temperature of 50 ℃ for 1.5 hours, heating to 80 ℃, and soaking for 3.5 hours, wherein the antibacterial solution is prepared by dissolving methacrylamide and azodiisopropyl imidazoline in water and reacting for 3 minutes at the temperature of 70 ℃, and the molar ratio of the methacrylamide to the azodiisopropyl imidazoline in every 100mL of water is 0.3: 0.04;
(11) and (3) second antibacterial treatment: uniformly coating the antibacterial liquid on the surface of the fabric, wherein the coating amount is 10g/m2Baking at 80 deg.C until the water content is 3%, and baking at 100 deg.C for crosslinking for 8 min;
(12) and (3) post-treatment: washing, dewatering, drying in a loose mode, tentering, setting and inspecting the fabric in sequence after the fabric is washed;
the finally prepared antibacterial cationic polyester blended fabric has the air permeability of 800mm/s, the moisture regain of 5.2% and the elongation at break of 160%.
Example 5
A preparation process of an antibacterial cationic polyester blended fabric comprises the following specific steps:
(1) preparing a cationic polyester raw sliver:
(1.1) carrying out modification treatment on the polyester fiber, and copolymerizing dimethyl isophthalate-5-sodium Sulfonate (SIPM) and the polyester to obtain a cationic polyester fiber;
(1.2) firstly, soaking cationic terylene in absolute ethyl alcohol, fully washing the cationic terylene in an ultrasonic washer for 120min, washing the cationic terylene with deionized water, drying the cationic terylene in a 60 ℃ drying oven, firstly, flatly paving the cationic terylene on a steel wire mesh, then placing the cationic terylene in a plasma processing chamber, respectively adjusting the power output of a power supply of a plasma machine and the pressure of a vacuum chamber to 300w and 70Pa, introducing argon for processing for 200s, finally, washing the cationic terylene with the deionized water for multiple times, and then placing the cationic terylene in the 60 ℃ drying oven for drying;
(1.3) carrying out opening pretreatment on the cation polyester fiber after plasma treatment, carding on a carding machine to obtain cation polyester fiber sliver, wherein the parameters of the cotton carding process are as follows: the cylinder speed is 300r/min, the licker-in speed is 700r/min, the doffer speed is 30r/min, the cover plate speed is 120mm/min, and the raw sliver ration is 20g/5 m;
(2) preparing cotton fiber raw strips: opening and preprocessing cotton fibers, carding on a carding machine to obtain cotton fiber slivers, wherein parameters of a cotton carding process are as follows: the cylinder speed is 300r/min, the licker-in speed is 700r/min, the doffer speed is 30r/min, the cover plate speed is 120mm/min, and the raw sliver ration is 22g/5 m;
(3) preparing raw chitosan fiber strips: opening and pretreating chitosan fibers, carding on a carding machine to obtain chitosan fiber raw slivers, wherein parameters of a carding procedure are as follows: the cylinder speed is 300r/min, the licker-in speed is 700r/min, the doffer speed is 30r/min, the cover plate speed is 100mm/min, and the raw sliver ration is 22g/5 m;
(4) drawing: drawing the cationic polyester raw slivers, the cotton fiber raw slivers and the chitosan fiber raw slivers prepared in the steps (1), (2) and (3) on a drawing frame according to the mass ratio of 50:40:10 to obtain drawn slivers;
parameters of the drawing process: pre-drying at a quantitative of 16g/5m, and mixing 6; the quantitative ratio of the mixed first dry is 15g/5m, 7 pieces of mixed first dry are combined, and the drafting multiple of a rear zone is 1.8 times; the quantitative ratio of the mixed second yarn is 16g/5m, 8 yarns are mixed, the drafting multiple of a rear zone is 1.8 times, and the drawing speed is 230 m/min;
(5) roving: drafting and twisting the drawn sliver prepared in the step (4) on a roving machine;
parameters of the roving process: the quantitative ratio of the drawn sliver is 0.8g/5m, the quantitative ratio of the roving dry is 4.5g/10m, the twist factor is 82, the draft multiple of the rear zone is 1.2, the roller gauge is 10mm multiplied by 26mm multiplied by 28mm, and the speed of the front roller is 150 r/min;
(6) spinning: further drafting and twisting on a spinning machine to prepare blended yarns;
parameters of the spinning process: the ingot speed is 13000r/min, the roller gauge is 18mm multiplied by 33mm, the drafting multiple of the back zone is 1.6, and the twist coefficient is 370;
the breaking strength of the finally prepared antibacterial cationic polyester blended yarn is 338cN, the elongation at break is 17.02%, and the moisture regain is 6.75%;
(7) spooling: the process parameters of the spooling process are as follows: the winding speed is 850m/min, and the tension is 5 cN;
the number of nine-grade yarn faults of the yarn output in the spooling process is 0, and the number of hairiness of 3mm of cone yarn is 55/10 cm;
(8) weaving: weaving the wound blended yarn by using a circular knitting machine, wherein the needle number is 26 needles/inch, the total needle number is 2500, the number of loop forming systems is 16, and the diameter of a machine cylinder is 15 inches;
(9) decontamination treatment: soaking the fabric in a decontamination finishing liquid at the temperature of 30 ℃ for 25min, padding and drying, wherein the decontamination finishing liquid is prepared by adding cross-linked chitosan resin, a magnesium chloride catalyst and a fluorine surfactant after adjusting the pH value of water to be 3, the mass ratio of the cross-linked chitosan resin to the magnesium chloride catalyst to the fluorine surfactant in each liter of water is 6:4:40, the padding mangle ratio of padding is 60%, the drying temperature is 95 ℃, and the drying time is 30 min;
(10) first antibacterial treatment: soaking the fabric in an antibacterial solution at the temperature of 50 ℃ for 1.5 hours, heating to 70 ℃, and soaking for 3.5 hours, wherein the antibacterial solution is prepared by dissolving methacrylamide and azodiisopropyl imidazoline in water and reacting for 3 minutes at the temperature of 70 ℃, and the molar ratio of the methacrylamide to the azodiisopropyl imidazoline in every 100mL of water is 0.3: 0.05;
(11) and (3) second antibacterial treatment: uniformly coating the antibacterial liquid on the surface of the fabric, wherein the coating amount is 15g/m2Baking at 80 deg.C until water content is 2%, and baking at 100 deg.C for crosslinking for 9 min;
(12) and (3) post-treatment: washing, dewatering, drying in a loose mode, tentering, setting and inspecting the fabric in sequence after the fabric is washed;
finally, the antibacterial cationic terylene blended fabric is prepared, and the performance parameters are shown in table 1.
Comparative example 1
The preparation process of the blended fabric is basically the same as that in the example 5, except that the cationic polyester carded sliver is not prepared in the comparative example 1, and the mass ratio of the cotton fiber carded sliver to the chitosan fiber carded sliver in the drawing process is 80: 20.
Finally, the blended fabric is prepared, and the performance indexes of the blended fabric are shown in the table 1.
Comparative example 2
The preparation process of the blended fabric is basically the same as that of the example 5, except that the cotton fiber raw strips are not prepared in the comparative example 1, and the mass ratio of the cationic polyester raw strips to the chitosan fiber raw strips in the drawing process is 90: 10.
Finally, the blended fabric is prepared, and the performance indexes of the blended fabric are shown in the table 1.
The data in table 1 are analyzed, and a breaking strength diagram (shown in fig. 1) and a breaking elongation diagram (shown in fig. 2) of example 5, comparative example 1 and comparative example 2 are respectively obtained, as can be seen from fig. 1 and fig. 2, the breaking strength in the warp direction and the breaking elongation in the weft direction of example 5 are both greater than those of comparative example 1 and comparative example 2, and the breaking elongation in the warp direction and the breaking elongation in the weft direction of example 5 are also greater than those of comparative example 1 and comparative example 2, which shows that the overall strength and the stretch performance of the fabric in example 5 are better because the length of the polysaccharide fiber is short, the strength is low, and the cohesive force between the fibers is low, while the strength of the cotton fiber added in comparative example 1 is high, but the elasticity is poor, and the prepared yarn strength is good; compared with the prior art, the cationic polyester fiber and the chitosan fiber are blended, the cationic polyester has high strength and elasticity, the moisture regain is poorer, and the fabric strength and elasticity are improved, so that the cationic polyester fiber fabric prepared by the method has good mechanical property; analysis of the mechanical properties of the fabric of example 5 shows that the fabric has better strength in the warp direction than in the weft direction, but the fabric has slightly poorer flexibility in the warp direction than in the weft direction, because the density of the fabric in the warp direction is greater than that in the weft direction.
The antibacterial tests of the embodiment 5, the comparative example 1 and the comparative example 2 are respectively carried out by adopting a bacterial liquid absorption method, the data obtained by the final test are shown in table 1, the data in the table show that the escherichia coli resistance and the staphylococcus aureus resistance of the embodiment 5 and the comparative example 2 are good, and the antibacterial effect of the comparative example 1 is poor, because the embodiment 5 and the comparative example 2 both contain chitosan with good antibacterial effect, but in consideration of the comfort and the practicability of fabrics, the embodiment 5 with good antibacterial effect is selected, and the antibacterial functional cationic polyester blended fabric prepared by the invention is proved to have good antibacterial performance.
Table 1 performance index of cationic blended fabric described in example 5, comparative example 1 and comparative example 2
| Index (I) | Example 5 | Comparative example 1 | Comparative example 2 |
| Percent of polyester/cotton/chitosan% | 50:40:10 | 0:80:20 | 90:0:10 |
| Thickness/mm | 0.963±0.005 | 0.941±0.005 | 0.884±0.019 |
| Air permeability mm/s | 730.4±13.2 | 854.1±34.6 | 705.5±25.5 |
| Strength of warp break N | 283.44±10.23 | 254.10±12.46 | 259.15±9.65 |
| Elongation at break in warp direction% | 163.98±5.24 | 143.53±5.11 | 146.77±3.65 |
| Weft breaking strength/cN | 210.03±8.54 | 189.62±5.89 | 190.77±7.54 |
| Percent elongation at break in the weft direction /) | 207.73±10.25 | 181.25±5.35 | 159.85±8.45 |
| Moisture regain/% | 5.97±0.51 | 3.18±1.57 | 1.28±1.05 |
| E.coli/%) | 72.5±2.1 | 75.2±3.5 | 65.5±2.0 |
| Staphylococcus aureus/%) | 71.6±1.8 | 73.8±2.4 | 60.3±1.5 |
Comparative example 3
The preparation process of the antibacterial cationic terylene blended yarn is basically the same as that in the embodiment 1, except that the spooling speed is 1300 m/min.
The number of nine-grade yarn faults of the yarn output in the spooling process is 0, and the number of hairiness of 3mm of cone yarn is 80 per 10 cm.
Comparative example 4
The preparation process of the antibacterial cationic terylene blended yarn is basically the same as that in the example 1, except that the tension parameter in the spooling process is 12 cN.
The number of nine-grade yarn defects of the yarn output in the spooling process is 1, and the number of hairiness of 3mm of cone yarn is 100 per 10 cm.
Comparing example 5, comparative example 3 and comparative example 4, it can be seen that the number of hairiness of the yarn output by the spooling process of example 5 is smaller than that of comparative example 3 and comparative example 4, because the spooling speed of comparative example 3 is relatively faster, the friction between the yarn and the grooved drum is larger, the yarn damage degree is also larger, and thus the number of hairiness of comparative example 3 is larger compared with example 5; the tension of comparative example 4 is relatively large, the friction of the yarn with the components of the winding channel is large, the cotton hairiness is longer, the hairiness number is more, compared to example 5, demonstrating that slower bobbin perusal and lower tension can reduce the hairiness number.
Comparative example 5
The preparation process of the antibacterial cationic polyester blended fabric is basically the same as that in the example 1, except that the step (1.2) is omitted.
The number of nine-grade yarn defects of the yarn output in the spooling process is 1, and the number of hairiness of 3mm of cone yarn is 95/10 cm.
Comparing example 1 with comparative example 5, it can be seen that the grooves are formed on the surface of the cationic polyester fibers by adopting the plasma treatment technology, so that the surface friction force between the fibers is increased, the moisture absorption property and the surface friction property of the cationic polyester fibers are improved, the cohesive force between the fibers is increased, the hairiness is reduced, and the quality of the fabric is improved.
Claims (9)
1. A preparation process of an antibacterial cationic polyester blended fabric is characterized by comprising the following steps: weaving the cation terylene blended yarn with the antibacterial function to prepare the cation terylene blended fabric with the antibacterial function, wherein the cation terylene blended yarn with the antibacterial function is prepared by respectively carding the cation terylene, the cotton fiber and the chitosan fiber which are processed by plasma, and then mixing and then sequentially carrying out drawing, roving, spinning and spooling processes, wherein the spooling process has the parameters as follows: the winding speed is 850-1200 m/min, and the tension is 5-8 cN;
after weaving, carrying out after-finishing, and comprising the following steps:
(1) performing decontamination treatment, namely soaking the fabric in decontamination finishing liquid with the temperature of 25-35 ℃ for 20-30 min, padding and drying, wherein the decontamination finishing liquid is prepared by adding cross-linked chitosan resin, a magnesium chloride catalyst and an organic fluorine compound after adjusting the pH value of water to be 3, the mass ratio of the cross-linked chitosan resin, the magnesium chloride catalyst and the organic fluorine compound in each liter of water is 5-8: 4-5: 35-40, the padding mangle rate of padding is 50-80%, the drying temperature is 90-100 ℃, and the drying time is 10-40 min;
(2) performing first antibacterial treatment, namely soaking the fabric in an antibacterial solution at the temperature of 40-55 ℃ for 1-2 hours, heating to 60-90 ℃, and soaking for 3-4 hours, wherein the antibacterial solution is prepared by dissolving an antibacterial agent precursor and an initiator in water and reacting for 2-5 min at the temperature of 60-80 ℃, wherein the molar ratio of the antibacterial agent precursor to the initiator in every 80-120 mL of water is 0.2-0.4: 0.03-0.06;
(3) performing second antibacterial treatment, namely uniformly coating the antibacterial liquid on the surface of the fabric, wherein the coating amount is 10-20 g/m2Drying at 60-90 ℃ until the water content is less than or equal to 6%, and then drying and crosslinking at 100 ℃ for 5-10 min;
(4) and (4) post-treatment, namely washing the fabric, dewatering, drying in a loose manner, tentering, setting and inspecting in sequence.
2. The preparation process of the antibacterial cationic terylene blended fabric according to claim 1, wherein the cationic terylene is a normal pressure cationic dye dyeable terylene; the mass ratio of the cationic polyester fibers, the cotton fibers and the chitosan fibers after the plasma treatment is 40-80: 10-50: 10-20; respectively cleaning and drying the cationic terylene before and after the plasma treatment; the plasma treatment process of the cationic terylene comprises the following steps: firstly, cation terylene is flatly laid on a steel wire mesh, then the cation terylene is placed in a plasma processing chamber, the power output power of a plasma machine and the pressure of a vacuum chamber are respectively adjusted to 150-500 w and 10-100 Pa, and then any one of oxygen, argon or nitrogen is introduced for processing for 40-200 s.
3. The preparation process of the antibacterial cationic polyester blended fabric according to claim 1, which is characterized in that the parameters of a cotton carding process are as follows: the cylinder speed is 200-400 r/min, the licker-in speed is 600-800 r/min, the doffer speed is 20-40 r/min, the cover plate speed is 80-150 mm/min, and the raw sliver ration is 5-22 g/5 m;
pre-drawing is firstly carried out during drawing, then two mixing processes are carried out, and parameters of the drawing process are as follows: pre-drying the mixture, wherein the pre-drying quantity is 10-18 g/5m, and 4-8 pieces of the mixture are combined; the quantitative mixing amount is 10-16 g/5m, 5-9 pieces are combined, and the back zone drafting multiple is 1-3 times; the quantitative ratio of the mixed second yarn is 10-16 g/5m, 5-9 yarns are combined, the back zone drafting multiple is 1-3 times, and the drawing speed is 150-230 m/min;
parameters of the roving process: the quantitative ratio of the drawn slivers is 0.5-1.5 g/5m, the quantitative ratio of the dry roving is 3-5 g/10m, the twist factor is 80-90, the draft multiple of the rear zone is 1-2, the roller gauge is 10mm multiplied by 26mm multiplied by 28mm, and the speed of the front roller is 100-200 r/min;
parameters of the spinning process: the ingot speed is 10000-14000 r/min, the roller gauge is 18mm multiplied by 33mm, the drafting multiple of the rear zone is 1-3, and the twist coefficient is 360-380;
the number of nine-grade yarn faults of the yarn output in the spooling process is 0, and the number of hairiness of 3mm of the cone yarn is 55-65 pieces/10 cm.
4. The preparation process of the antibacterial cationic terylene blended fabric according to claim 3, which is characterized in that the parameters of the drawing process are as follows: pre-drying the mixture, wherein the pre-drying quantitative is 15-17 g/5m, and 5-6 pieces are combined; the quantitative mixing amount is 15-16 g/5m, 6-7 pieces are combined, and the back zone drafting multiple is 1.5-2 times; the quantitative ratio of the mixed second dry is 15-16 g/5m, 7-8 dry mixed dry mixed dry.
5. The preparation process of the antibacterial cationic terylene blended fabric according to claim 3, wherein the parameters of the roving process are as follows: the dry weight of the roving is 4-5 g/10m, the twist coefficient is 80-85, the drafting multiple of the rear zone is 1-1.3, and the speed of the front roller is 140-160 r/min.
6. The preparation process of the antibacterial cationic terylene blended fabric according to claim 3, wherein the parameters of the spinning process are as follows: the ingot speed is 12000-13800 r/min, and the back zone draft multiple is 1.5-1.8.
7. The preparation process of the antibacterial cationic terylene blended fabric according to claim 1, wherein the weaving is carried out by a circular knitting machine, the needle number is 24-28 needles/inch, the total needle number is 1100-2900, the number of loop forming systems is 4-20, and the diameter of a machine cylinder is 8-20 inches.
8. The preparation process of the antibacterial functional cationic polyester blended yarn fabric as claimed in claim 1, wherein the breaking strength of the antibacterial functional cationic polyester blended yarn is 177-338 cN, the breaking elongation is 6.69% -17.02%, and the moisture regain is 1.14% -6.75%.
9. The antibacterial cationic polyester blended fabric prepared by the preparation process of the antibacterial cationic polyester blended fabric according to any one of claims 1 to 8 is characterized in that: the air permeability is 700-860 mm/s, the moisture regain is 1.2-6.0%, the elongation at break is 40-210%, and the antibacterial rate to escherichia coli and staphylococcus aureus is 60-80%.
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