CN114086315B - High-antibacterial down quilt core and preparation method thereof - Google Patents
High-antibacterial down quilt core and preparation method thereof Download PDFInfo
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- CN114086315B CN114086315B CN202111332187.1A CN202111332187A CN114086315B CN 114086315 B CN114086315 B CN 114086315B CN 202111332187 A CN202111332187 A CN 202111332187A CN 114086315 B CN114086315 B CN 114086315B
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/07—Addition of substances to the spinning solution or to the melt for making fire- or flame-proof filaments
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- 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
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/02—Cotton wool; Wadding
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43835—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/48—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
- D04H1/485—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation in combination with weld-bonding
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- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/13—Physical properties anti-allergenic or anti-bacterial
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- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2503/00—Domestic or personal
- D10B2503/06—Bed linen
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Abstract
The invention discloses a down quilt core with high antibacterial property and a preparation method thereof. The invention firstly pulverizes down fiber to obtain superfine down powder, and after mixing with cinnamaldehyde, adding quaternary phosphonium salt for modification to obtain modified superfine down powder, chelating with polylactic acid nano fiber through electrostatic spinning to obtain composite fiber, then grafting and modifying the composite fiber with melamine and phosphoric acid to obtain high-antibacterial down fiber, and then stretching and shaping the high-antibacterial down fiber, and layering with silk activation treatment technology layer to obtain the high-antibacterial down quilt core. The high-antibacterial down quilt core prepared by the invention has the effects of antibacterial, flame retarding, hydrophobic and moisture permeable.
Description
Technical Field
The invention relates to the technical field of fabric knitting, in particular to a high-antibacterial down quilt core and a preparation method thereof.
Background
The quilt core product is a living necessity of people, is one of leading products in home textile products, especially bedding, has large market demand and wide development space, is influenced by development in various aspects of economy, society, science and technology in recent years, has continuously changed consumption capability and consumption concept, has new characteristics for the consumption demand of the quilt core product in the market, deserves attention of home textile enterprises, creatively meets the direction of people for good-quality good home life based on the development direction of the quilt core product, but the down quilt core in the market is generally faced with low antibacterial property and insufficient individual performance, and reduces the use rate of the down quilt core.
The high-antibacterial down quilt core prepared by the invention can not only meet the comfort requirements of people, but also have the effects of resisting bacteria, resisting flame, resisting water and moisture, and develop wider performance fields for bedding articles, and can also improve social and economic development, thereby achieving two purposes.
Disclosure of Invention
The invention aims to provide a down quilt core with high antibacterial property and a preparation method thereof, so as to solve the problems in the prior art.
In order to solve the technical problems, the invention provides the following technical scheme: the down quilt core with high antibacterial property mainly comprises the following components in parts by weight:
50-70 parts of composite fiber, 20-30 parts of melamine and 10-20 parts of phosphoric acid.
Further, the composite fiber comprises modified superfine down powder and polylactic acid fiber.
Further, the modified superfine down powder is prepared by modifying superfine down powder through cinnamic acid and quaternary phosphonium salt.
Further, the superfine down powder is prepared by crushing down fibers through a rotary knife type machine.
Furthermore, the high-antibacterial down fiber is prepared from composite fibers, melamine and phosphoric acid through electrostatic spinning.
Further, the preparation method of the high-antibacterial down quilt core is characterized by mainly comprising the following preparation steps:
(1) Preparing modified superfine down powder: firstly, smashing down fibers into superfine down powder, after ultrasonic dispersion of the superfine down powder and dimethylformamide, adding cinnamaldehyde and quaternary phosphate aqueous solution, mixing and stirring, and washing and drying to obtain modified superfine down powder;
(2) Preparation of composite fibers: mixing acetone and dimethylformamide, adding polylactic acid fiber and modified superfine down powder, and carrying out electrostatic spinning to prepare composite fiber;
(3) Preparing high-antibacterial down fiber: mixing melamine and distilled water for dissolution, adding phosphoric acid to adjust the pH of the solution, adding composite fibers for mixing, transferring into a three-neck flask, connecting condensed water, controlling the reaction temperature and the reaction time, and washing and drying after the reaction is finished to obtain the high-antibacterial down fiber;
(4) Preparing a high-antibacterial down quilt core: the high-antibacterial down fiber is fed into an opener for opening, the opened high-antibacterial down fiber is fed into a carding machine for carding, the carded high-antibacterial down fiber is paved once through a lapping machine, then the high-antibacterial down fiber enters a needling machine for needling, and after needling and needling, the high-antibacterial down fiber is put into an oven for baking, and is cooled and shaped through a press roll, so that the high-antibacterial down quilt core is prepared.
Further, the preparation method of the modified superfine down powder in the step (1) comprises the following steps: firstly, smashing down fibers into short wool with the diameter of 2-3 mm in a rotary knife type machine, then placing the short wool on physical smashing equipment to be smashed into superfine down powder with the diameter of 2-3 mu m, placing the superfine down powder into a flat-bottomed flask, drying the superfine down powder for 1.5-2 h in a baking oven with the temperature of 100-110 ℃, adding dimethylformamide with the weight of 0.2-0.4 times of the superfine down powder, fully and uniformly stirring, dispersing the mixture for 1-2 h at the frequency of 20-40 kHz in ultrasonic waves, standing for 20-24 h, adding cinnamaldehyde with the weight of 0.5-0.7 times of the superfine down powder, fully and uniformly stirring, adding quaternary phosphorus aqueous solution with the concentration of 10%, reacting for 2-10 h at the temperature of 50-60 ℃ in a constant-temperature oscillating incubator, taking out the mixture after the reaction, washing the mixture with distilled water until the washing liquid is neutral, and drying the mixture for 1-2 h at the temperature of 40-50 ℃ to obtain modified superfine down powder.
Further, the preparation method of the composite fiber in the step (2) comprises the following steps: mixing acetone and dimethylformamide according to a mass ratio of 1:1-1:2 to obtain a mixed solution, adding polylactic acid fiber with the mass of 0.6-0.8 times of the mixed solution, stirring uniformly, adding modified superfine down powder with the mass of 0.3-0.5 times of the mixed solution, continuously stirring uniformly, transferring into a spinning machine made of a No. 7 injector, taking 15cm multiplied by 15cm aluminum foil as a receiver, adjusting the receiving distance to be 13-17 cm, keeping the environment temperature to be 20-22 ℃, keeping the relative humidity to be 40% -50%, and carrying out electrostatic spinning under the process conditions, so as to obtain the composite fiber.
Further, the preparation method of the down fiber with high antibacterial property in the step (3) comprises the following steps: dissolving melamine and distilled water at a mass ratio of 1:3-1:5 at a temperature of 40-50 ℃, adding phosphoric acid to adjust the pH value of the solution to 2-3, adding the composite fiber at a water bath ratio of 1:150-1:180, mixing, transferring into a three-mouth flask, connecting condensed water, controlling the reaction temperature to be 70-90 ℃, reacting for 4-6 h, repeatedly washing the composite fiber with distilled water for 3-5 times after the reaction is finished, and drying at a temperature of 40-50 ℃ for 1-1.5 h to obtain the high-antibacterial down fiber.
Further, the preparation method of the down quilt core with high antibacterial property in the step (4) comprises the following steps: and feeding the high-antibacterial down fibers into an opener in a multilayer tiling mode for opening 1-2 times, sucking the opened high-antibacterial down fibers into a cotton box connected with a carding machine by a suction fan for storage, feeding the cotton box into the carding machine for carding 2-3 times, paving the carded high-antibacterial down fibers into a needle loom through a lapping machine for one time, putting the carded high-antibacterial down fibers into a needling machine for needling, putting the needled high-antibacterial down fibers into a baking oven for baking at 150-160 ℃ for 20-25 s, and cooling and shaping through a pressing roller to obtain the high-antibacterial down quilt core.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, down feather fibers are firstly ground into superfine down feather powder, the superfine down feather powder is mixed with cinnamaldehyde, quaternary phosphonium salt is added for modification, modified superfine down feather powder is prepared, electrostatic spinning is carried out to chelate polylactic acid nano fibers, composite fibers are prepared, melamine and phosphoric acid are used for grafting modification of the composite fibers, high-antibacterial down feather fibers are prepared, the high-antibacterial down feather fibers are drawn and shaped, and silk activation treatment technology layers are used for layering, so that the high-antibacterial down feather quilt core is prepared.
Cinnamaldehyde is used as a polar substance, so that the crystallinity of the superfine down powder in a fiber matrix is easily promoted, the overall density is increased, hydrophilic groups of the superfine down powder interact with alkyl chains and benzene rings of the cinnamaldehyde, the thermal decomposition temperature can be increased, the thermal stability of a material is enhanced, the fiber surface is provided with a large number of positive charges after being modified by quaternary phosphonium salt, the bacterial surface is mostly composed of negative charge substances, bacteria are adsorbed on the fiber due to the electrostatic effect and the adsorption force of the fiber, the quaternary phosphonium functional groups can promote the combination of the alkyl chains of the cinnamaldehyde and amino acid peptide chains of the superfine down powder, and benzene rings and quaternary phosphonium functional groups of the cinnamaldehyde can drive and enhance the hydrophobicity of the bacterial surface, the integrity of cell membranes is destroyed, the cytolactonase activity is reduced, the synthesis of bacterial structural proteins and enzyme proteins is inhibited, parasitic bacteria cannot perform normal metabolism and complete physiological functions, thereby the antibacterial effect is achieved, and when the charge distribution in the system is uneven, the cell wall is also caused to be synthesized and dissolved, thereby the antibacterial effect is achieved;
after the modified superfine down powder and the polylactic acid fiber are chelated, long hydrocarbon molecular chains on the surface of the modified superfine down powder can improve the compatibility between the superfine down powder and the polyurethane fiber, and when the modified superfine down powder and the polylactic acid fiber are subjected to high temperature, the cross-linked structure of the modified superfine down powder and the polylactic acid fiber starts to decompose, and simultaneously the protein of the modified superfine down powder is carbonized and cracked, and hydrogen bonds connected between peptide bonds of the down spiral structure are cracked and release gas, so that the gas is covered on the surface of the fiber to form a barrier layer to dilute the concentration of oxygen, inhibit the combustion of the fiber and achieve the aim of flame retardance;
the fiber subjected to melamine and phosphoric acid grafting modification has strong surface tension, benzene ring groups in cinnamaldehyde can form a series of hydrophobic micro-areas in a fiber matrix through long hydrocarbon molecular chains of modified superfine down powder, so that the hydrophobic acting force between each chain segment is enhanced, the outward migration of water molecules can be promoted, larger gaps are formed in the chelation process with polylactic acid fibers, a uniform and smooth penetrating long hole structure is formed, and the gaps between the melamine and the polylactic acid fibers can increase the outward diffusion channel of the water molecules, so that the moisture permeability of the high-antibacterial down fiber is enhanced.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to more clearly illustrate the method provided by the invention, the following examples are used for describing the detailed description, and the test method of each index of the high-antibacterial down quilt core manufactured in the following examples is as follows:
antibacterial properties: and E.coli and staphylococcus aureus are selected for a bacteriostasis circle experiment, the high-antibacterial down quilt cores prepared by the components of the example 1, the comparative example 1 and the comparative example 1 are placed in a bacteria incubator, taken out after 24 hours, and the survival rate of bacteria is observed by a microscope, and the lower the survival rate is, the better the antibacterial performance is.
Flame retardant properties: the high-antibacterial down quilt cores prepared by the components of the example 1, the example 2 and the comparative example 2 are subjected to flame retardant property test; and the LOI value of the high-temperature-resistant high-toughness fabric is observed, and the larger the LOI value is, the better the flame retardant property is.
Example 1
The down quilt core with high antibacterial property mainly comprises the following components in parts by weight: 50 parts of composite fiber, 20 parts of melamine and 10 parts of phosphoric acid.
The preparation method of the high-antibacterial down quilt core mainly comprises the following preparation steps:
(1) Preparing modified superfine down powder: firstly, smashing down fibers into superfine down powder, after ultrasonic dispersion of the superfine down powder and dimethylformamide, adding cinnamaldehyde and quaternary phosphate aqueous solution, mixing and stirring, and washing and drying to obtain modified superfine down powder;
(2) Preparation of composite fibers: mixing acetone and dimethylformamide, adding polylactic acid fiber and modified superfine down powder, and carrying out electrostatic spinning to prepare composite fiber;
(3) Preparing high-antibacterial down fiber: mixing melamine and distilled water for dissolution, adding phosphoric acid to adjust the pH of the solution, adding composite fibers for mixing, transferring into a three-neck flask, connecting condensed water, controlling the reaction temperature and the reaction time, and washing and drying after the reaction is finished to obtain the high-antibacterial down fiber;
(4) Preparing a high-antibacterial down quilt core: the high-antibacterial down fiber is fed into an opener for opening, the opened high-antibacterial down fiber is fed into a carding machine for carding, the carded high-antibacterial down fiber is paved once through a lapping machine, then the high-antibacterial down fiber enters a needling machine for needling, and after needling and needling, the high-antibacterial down fiber is put into an oven for baking, and is cooled and shaped through a press roll, so that the high-antibacterial down quilt core is prepared.
Further, the preparation method of the modified superfine down powder in the step (1) comprises the following steps: firstly, breaking down fibers into short wool with the size of 2mm in a rotary knife type machine, then placing the short wool on physical breaking equipment to be broken into superfine down powder with the particle size of 2-3 mu m, placing the superfine down powder into a flat-bottomed flask, drying the flat-bottomed flask for 1.5 hours in a baking oven at the temperature of 100 ℃, adding dimethylformamide with the weight of 0.2 times of the superfine down powder, fully and uniformly stirring, dispersing the flat-bottomed flask for 1 hour at the frequency of 20kHz in the ultrasonic wave, then standing for 20 hours, adding cinnamaldehyde with the weight of 0.5 times of the superfine down powder, fully and uniformly stirring, adding quaternary phosphorus aqueous solution with the concentration of 10%, reacting for 2 hours at the temperature of 50 ℃ in a constant-temperature oscillating incubator at the speed of 120rpm, taking out the superfine down powder after the reaction, washing the superfine down powder with distilled water until the washing liquid is neutral, and drying the flat-bottomed flask at the temperature of 40 ℃ for 1 hour to obtain modified superfine down powder.
Further, the preparation method of the composite fiber in the step (2) comprises the following steps: mixing acetone and dimethylformamide according to a mass ratio of 1:1 to obtain a mixed solution, adding polylactic acid fiber with the mass of 0.6 times of the mixed solution, stirring uniformly, adding modified superfine down powder with the mass of 0.3 times of the mixed solution, continuously stirring uniformly, transferring into a spinning machine made of a No. 7 injector, taking 15cm multiplied by 15cm aluminum foil as a receiver, adjusting the receiving distance to 13cm, keeping the ambient temperature to 20 ℃, keeping the relative humidity to 40%, and carrying out electrostatic spinning under the process conditions, thereby obtaining the composite fiber.
Further, the preparation method of the down fiber with high antibacterial property in the step (3) comprises the following steps: dissolving melamine and distilled water at a mass ratio of 1:3 at 40 ℃, adding phosphoric acid to adjust the pH value of the solution to 2, adding the composite fiber at a water bath ratio of 1:150, mixing, transferring into a three-neck flask, connecting condensed water, controlling the reaction temperature to be 70 ℃, reacting for 4 hours, repeatedly washing the composite fiber with distilled water for 3 times after the reaction is finished, and drying for 1 hour at 40 ℃ to obtain the high-antibacterial down fiber.
Further, the preparation method of the down quilt core with high antibacterial property in the step (4) comprises the following steps: the method comprises the steps of feeding high-antibacterial down fibers into an opener in a multilayer tiling mode for opening 1 time, sucking the opened high-antibacterial down fibers into a cotton box connected with a carding machine by a suction fan for storage, feeding the cotton box into the carding machine for carding 2 times, paving the carded high-antibacterial down fibers into a net-paving machine for one time, entering a needling machine for needling, putting the high-antibacterial down fibers into a baking oven for baking at 150 ℃ for 20s, and cooling and shaping by a compression roller to obtain the high-antibacterial down quilt core.
Example 2
The down quilt core with high antibacterial property mainly comprises the following components in parts by weight: 70 parts of composite fiber, 30 parts of melamine and 20 parts of phosphoric acid.
The preparation method of the high-antibacterial down quilt core mainly comprises the following preparation steps:
(1) Preparing modified superfine down powder: firstly, smashing down fibers into superfine down powder, after ultrasonic dispersion of the superfine down powder and dimethylformamide, adding cinnamaldehyde and quaternary phosphate aqueous solution, mixing and stirring, and washing and drying to obtain modified superfine down powder;
(2) Preparation of composite fibers: mixing acetone and dimethylformamide, adding polylactic acid fiber and modified superfine down powder, and carrying out electrostatic spinning to prepare composite fiber;
(3) Preparing high-antibacterial down fiber: mixing melamine and distilled water for dissolution, adding phosphoric acid to adjust the pH of the solution, adding composite fibers for mixing, transferring into a three-neck flask, connecting condensed water, controlling the reaction temperature and the reaction time, and washing and drying after the reaction is finished to obtain the high-antibacterial down fiber;
(4) Preparing a high-antibacterial down quilt core: the high-antibacterial down fiber is fed into an opener for opening, the opened high-antibacterial down fiber is fed into a carding machine for carding, the carded high-antibacterial down fiber is paved once through a lapping machine, then the high-antibacterial down fiber enters a needling machine for needling, and after needling and needling, the high-antibacterial down fiber is put into an oven for baking, and is cooled and shaped through a press roll, so that the high-antibacterial down quilt core is prepared.
Further, the preparation method of the modified superfine down powder in the step (1) comprises the following steps: firstly, breaking down fibers into short piles of 3mm in a rotary knife type machine, then placing the short piles on physical breaking equipment to break down the short piles into superfine down powder with the particle size of 3 mu m, placing the superfine down powder into a flat-bottom flask, drying the flat-bottom flask in a baking oven at the temperature of 110 ℃ for 2 hours, adding dimethylformamide with the weight of 0.4 times of the superfine down powder, fully and uniformly stirring, dispersing the flat-bottom flask in ultrasonic waves for 2 hours at the frequency of 40kHz, standing for 24 hours, adding cinnamaldehyde with the weight of 0.7 times of the superfine down powder, fully and uniformly stirring, adding quaternary phosphorus salt water solution with the concentration of 10 percent, reacting for 10 hours at the temperature of 60 ℃ in a constant-temperature oscillating incubator, taking out the superfine down powder after the reaction is finished, washing the superfine down powder with distilled water until washing liquid is neutral, and drying the superfine down powder at the temperature of 50 ℃ for 2 hours.
Further, the preparation method of the composite fiber in the step (2) comprises the following steps: mixing acetone and dimethylformamide according to a mass ratio of 1:2 to obtain a mixed solution, adding polylactic acid fiber with the mass of 0.8 times of the mixed solution, stirring uniformly, adding modified superfine down powder with the mass of 0.5 times of the mixed solution, continuously stirring uniformly, transferring into a spinning machine made of a No. 7 injector, taking 15cm multiplied by 15cm aluminum foil as a receiver, adjusting the receiving distance to 17cm, keeping the ambient temperature to 22 ℃, keeping the relative humidity to 50%, and carrying out electrostatic spinning under the process conditions that the spinning voltage is 18kV, so as to obtain the composite fiber.
Further, the preparation method of the down fiber with high antibacterial property in the step (3) comprises the following steps: dissolving melamine and distilled water at 50 ℃ according to the mass ratio of 1:5, adding phosphoric acid to adjust the pH value of the solution to 3, adding composite fibers according to the water bath ratio of 1:180, mixing, transferring into a three-neck flask, connecting condensed water, controlling the reaction temperature to 90 ℃, reacting for 6 hours, repeatedly washing the composite fibers with distilled water for 5 times after the reaction is finished, and drying for 1.5 hours at 50 ℃ to obtain the high-antibacterial down fibers.
Further, the preparation method of the down quilt core with high antibacterial property in the step (4) comprises the following steps: the method comprises the steps of feeding high-antibacterial down fibers into an opener in a multilayer tiling mode for opening for 2 times, sucking the opened high-antibacterial down fibers into a cotton box connected with a carding machine by a suction fan for storage, feeding the cotton box into the carding machine for carding for 3 times, spreading the carded high-antibacterial down fibers once by a lapping machine, entering a needling machine, carrying out needling and needling, putting the high-antibacterial down fibers into a baking oven, baking for 25s at 160 ℃, and cooling and shaping by a pressing roller to obtain the high-antibacterial down quilt core.
Comparative example 1
The recipe for comparative example 1 was the same as that of example 1. The preparation method of the high-antibacterial down quilt core is different from the preparation method of the embodiment 1 only in that the preparation process of the step (1) is not carried out, and the rest preparation steps are the same as the embodiment 1.
Comparative example 2
The recipe for comparative example 2 was the same as in example 1. The preparation method of the high-antibacterial down quilt core is different from the preparation method of the example 1 only in that the preparation process of the step (2) is not carried out, and the rest preparation steps are the same as the example 1.
Effect example 1
The following table 1 gives the results of the antibacterial property test using the present invention of example 1, example 2 and comparative example 1.
TABLE 1
| Bacterial viability (%) | |
| Example 1 | 19 |
| Example 2 | 21 |
| Comparative example 1 | 48 |
It can be derived from the above table that the antibacterial properties of example 1 and example 2 are better, the antibacterial properties of comparative example 1 are not better than those of example 1 and example 2, which shows that after the quaternary phosphonium salt is modified, the fiber surface is made to have a large amount of positive charges, the bacterial surface is mostly composed of negative charge substances, the bacteria are adsorbed on the fiber due to the electrostatic effect and the adsorption force of the fiber, the quaternary phosphonium functional group can promote the combination of the alkyl chain of cinnamaldehyde and the amino acid peptide chain of superfine down powder, the benzene ring of cinnamaldehyde and the quaternary phosphonium functional group can drive to enhance the hydrophobicity of the bacterial surface, damage the integrity of cell membranes, reduce the activity of cytolactonase, inhibit the synthesis of bacterial structural proteins and enzyme proteins, cause parasitic bacteria to not perform normal metabolism and complete physiological functions, so as to die, achieve antibacterial effect, and when the electric charge distribution in the system is uneven, the synthesis and dissolution balance destruction of cell walls are also caused, so as to play a role in bacteriostasis.
Effect example 2
The following table 2 gives the flame retardant property test results using the present invention of example 1, example 2 and comparative example 2.
TABLE 2
| LOI | |
| Example 1 | 33% |
| Example 2 | 35% |
| Comparative example 2 | 17% |
From the above table, the flame retardant performance of example 1 and example 2 is better, and the flame retardant performance of comparative example 2 is inferior to that of example 1 and example 2, which shows that after the modified superfine down powder is chelated with the polylactic acid fiber, the long hydrocarbon molecular chain on the surface of the modified superfine down powder can improve the compatibility between the superfine down powder and the polyurethane fiber, and when the modified superfine down powder is subjected to high temperature, the crosslinked structure of the polylactic acid fiber starts to decompose, and at the same time, the protein of the modified superfine down powder is carbonized and cracked, the hydrogen bond connected between peptide bonds of the down spiral structure is cracked, and releases gas, and covers the surface of the fiber to form a layer of barrier layer, so that the concentration of oxygen is diluted, and the fiber combustion is inhibited, thereby achieving the flame retardant purpose.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (3)
1. The preparation method of the high-antibacterial down quilt core is characterized by mainly comprising, by weight, 50-70 parts of composite fibers, 20-30 parts of melamine and 10-20 parts of phosphoric acid;
the composite fiber comprises modified superfine down powder and polylactic acid fiber;
the modified superfine down powder is prepared by modifying superfine down powder by cinnamic acid and quaternary phosphonium salt;
the superfine down powder is prepared by crushing down fibers through a rotary knife type machine
The preparation method of the high-antibacterial down quilt core mainly comprises the following preparation steps:
(1) Preparing modified superfine down powder: firstly, smashing down fibers into superfine down powder, after ultrasonic dispersion of the superfine down powder and dimethylformamide, adding cinnamaldehyde and quaternary phosphate aqueous solution, mixing and stirring, and washing and drying to obtain modified superfine down powder;
(2) Preparation of composite fibers: mixing acetone and dimethylformamide, adding polylactic acid fiber and modified superfine down powder, and carrying out electrostatic spinning to prepare composite fiber;
(3) Preparing high-antibacterial down fiber: mixing melamine and distilled water for dissolution, adding phosphoric acid to adjust the pH of the solution, adding composite fibers for mixing, transferring into a three-neck flask, connecting condensed water, controlling the reaction temperature and the reaction time, and washing and drying after the reaction is finished to obtain the high-antibacterial down fiber;
(4) Preparing a high-antibacterial down quilt core: feeding the high-antibacterial down fibers into an opener for opening, feeding the opened high-antibacterial down fibers into a carding machine for carding, paving the carded high-antibacterial down fibers into a net-paving machine for one time, feeding the high-antibacterial down fibers into a needling machine for needling, baking the high-antibacterial down fibers in an oven, and cooling and shaping the high-antibacterial down fibers by a press roll to obtain high-antibacterial down quilt cores;
the preparation method of the modified superfine down powder comprises the following steps: firstly, smashing down fibers into short wool with the diameter of 2-3 mm in a rotary knife type machine, then placing the short wool on physical smashing equipment to be smashed into superfine down powder with the diameter of 2-3 mu m, placing the superfine down powder into a flat-bottomed flask, drying the superfine down powder for 1.5-2 h in a baking oven with the temperature of 100-110 ℃, adding dimethylformamide with the weight of 0.2-0.4 times of the superfine down powder, fully and uniformly stirring, dispersing the short wool in ultrasonic waves for 1-2 h at the frequency of 20-40 kHz, standing for 20-24 h, adding cinnamaldehyde with the weight of 0.5-0.7 times of the superfine down powder, fully and uniformly stirring, adding quaternary phosphorus aqueous solution with the concentration of 10%, reacting for 2-10 h in a constant-temperature oscillating incubator at the temperature of 120-160 rpm and 50-60 ℃, taking out the superfine down powder after the reaction is finished, washing the superfine down powder with distilled water until washing liquid is neutral, and drying the superfine down powder for 1-2 h at the temperature of 40-50 ℃ to obtain modified down powder;
the preparation method of the composite fiber comprises the following steps: mixing acetone and dimethylformamide according to a mass ratio of 1:1-1:2 to obtain a mixed solution, adding polylactic acid fiber with the mass of 0.6-0.8 times of the mixed solution, stirring uniformly, adding modified superfine down powder with the mass of 0.3-0.5 times of the mixed solution, continuously stirring uniformly, transferring into a spinning machine made of a No. 7 injector, taking 15cm multiplied by 15cm aluminum foil as a receiver, adjusting the receiving distance to be 13-17 cm, keeping the environment temperature to be 20-22 ℃, keeping the relative humidity to be 40% -50%, and carrying out electrostatic spinning under the process conditions, so as to obtain the composite fiber.
2. The method for preparing the high-antibacterial down quilt core according to claim 1, wherein the method for preparing the high-antibacterial down fiber in the step (3) is as follows: dissolving melamine and distilled water at a mass ratio of 1:3-1:5 at a temperature of 40-50 ℃, adding phosphoric acid to adjust the pH value of the solution to 2-3, adding the composite fiber at a water bath ratio of 1:150-1:180, mixing, transferring into a three-mouth flask, connecting condensed water, controlling the reaction temperature to be 70-90 ℃, reacting for 4-6 h, repeatedly washing the composite fiber with distilled water for 3-5 times after the reaction is finished, and drying at a temperature of 40-50 ℃ for 1-1.5 h to obtain the high-antibacterial down fiber.
3. The method for preparing the high-antibacterial down quilt core according to claim 1, wherein the method for preparing the high-antibacterial down quilt core in the step (4) is as follows: and feeding the high-antibacterial down fibers into an opener in a multilayer tiling mode for opening 1-2 times, sucking the opened high-antibacterial down fibers into a cotton box connected with a carding machine by a suction fan for storage, feeding the cotton box into the carding machine for carding 2-3 times, paving the carded high-antibacterial down fibers into a needle loom through a lapping machine for one time, putting the carded high-antibacterial down fibers into a needling machine for needling, putting the needled high-antibacterial down fibers into a baking oven for baking at 150-160 ℃ for 20-25 s, and cooling and shaping through a pressing roller to obtain the high-antibacterial down quilt core.
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