CN114589981A - Medical antistatic fabric and preparation method thereof - Google Patents

Medical antistatic fabric and preparation method thereof Download PDF

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Publication number
CN114589981A
CN114589981A CN202210195471.7A CN202210195471A CN114589981A CN 114589981 A CN114589981 A CN 114589981A CN 202210195471 A CN202210195471 A CN 202210195471A CN 114589981 A CN114589981 A CN 114589981A
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fabric
temperature
mixing
antistatic
intermediate product
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CN114589981B (en
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王晓荣
李贺
宋明起
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Anhui Hengyi Textile Technology Co ltd
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Anhui Hengyi Textile Technology Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0036—Heat treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/08—Impregnating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/162—Cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/164—Drying
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • 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
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/372—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen containing etherified or esterified hydroxy groups ; Polyethers of low molecular weight
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0276—Polyester fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/21—Anti-static
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/716—Degradable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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    • D—TEXTILES; PAPER
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Abstract

The invention relates to a medical antistatic fabric and a preparation method thereof, belonging to the technical field of fabrics, which consists of an inner layer, an outer layer and a base layer arranged between the inner layer and the outer layer, wherein the base layer is made of a membrane material, the inner layer is a cotton fabric, and the outer layer is a textile fabric, and the preparation method comprises the following steps: after the outer layer, the base layer and the inner layer are sequentially placed, under the conditions that the temperature is 52-54 ℃ and the pressure is 0.5-0.55MPa, the medical antistatic fabric is obtained by pressurizing and heat treating 15-20 min. The medical antistatic fabric is composed of an inner layer, an outer layer and a base layer arranged between the inner layer and the outer layer, and is compounded, wherein cotton fabrics are finished by a finishing agent, an antistatic component is added in the preparation process of a membrane material, and the textile fabric contains graphene fibers and has a good antistatic effect.

Description

Medical antistatic fabric and preparation method thereof
Technical Field
The invention belongs to the technical field of fabrics, and particularly relates to a medical antistatic fabric and a preparation method thereof.
Background
Medical fabrics are widely used, for example, disposable medical consumables such as masks, protective clothing, operation caps, operation bags, pillow cases, bed sheets, quilt covers and shoe covers are used, and the medical fabrics need to have certain special functions to deal with the use environment, such as: antibacterial, liquid-proof, moisture-absorbing, odor-absorbing, etc. In addition, the antistatic performance is an important index for measuring the fabric performance. In autumn and winter, people are often injured by static electricity, and people can feel stabbing pain and numb feeling, scorching, uneasiness, headache and discomfort when the static electricity is generated, so that the improvement of the antistatic property of the medical fabric is very important.
Disclosure of Invention
In order to solve the technical problems mentioned in the background technology, the invention provides a medical antistatic fabric and a preparation method thereof.
The purpose of the invention can be realized by the following technical scheme:
a medical antistatic fabric comprises an inner layer, an outer layer and a base layer arranged between the inner layer and the outer layer, wherein the thickness of the outer layer is 0.2-0.3mm, and the thickness of the inner layer is 0.1-0.3 mm;
furthermore, the inner layer is made of cotton fabric, so that the sweat absorption effect is good. The cotton fabric is prepared by the following steps:
mixing 3-aminocoumarin, sodium carbonate and deionized water, then mixing cyanuric chloride and acetone, adding a sodium carbonate aqueous solution to maintain the pH value at 7, stirring and reacting for 4 hours at the temperature of 40 ℃, filtering after the reaction is finished, washing and drying the obtained filter cake to obtain a finishing agent; the dosage ratio of cyanuric chloride, 3-aminocoumarin and sodium carbonate is 0.05 mol: 0.1 mol: 0.05 mol; acetone is used as a solvent, and the mass fraction of the sodium carbonate aqueous solution is 20%;
at the temperature of 60 ℃, the finishing agent and deionized water are mixed according to the weight ratio of 30 g: 1L of the finishing liquor is mixed to obtain finishing liquor, the finishing liquor and the fabric are mixed and dipped for 20min, then sodium chloride is added, the temperature is raised to 90 ℃ after 15min, then sodium carbonate is added to keep the temperature unchanged, and after 60min, the cotton fabric is obtained through cooling, water washing and drying; wherein the dosage ratio of the finishing liquid to the fabric to the sodium chloride to the sodium carbonate is 2L: 10 g: 5 g: 20 g.
The structure of the finishing agent contains monochlorotriazine radical which can generate nucleophilic substitution reaction with hydroxyl in cotton fabric, the finishing agent is connected to the cotton fabric through a covalent bond, so that the cotton fabric is endowed with a good antibacterial function, the formed covalent bond has good stability, the cotton fabric has good hygroscopicity and air permeability, static electricity is not easy to generate, but bacteria are easy to breed due to the good hygroscopicity, 3-aminocoumarin and cyanuric chloride are used as raw materials in the finishing agent to prepare a coumarin derivative, and the use effect of the cotton fabric is improved by utilizing the antioxidant and bacteriostatic effects of the coumarin derivative.
Further, the base layer is composed of a film material prepared by the steps of:
weighing the degradable material and the polypropylene according to the weight parts, and mixing to obtain a mixture; adding the antistatic component into the mixture for blending, then extruding the mixture by a double-screw extruder to obtain a blend, wherein the extrusion temperature is 220-250 ℃, then carrying out vacuum drying for 16-24h at the temperature of 80 ℃, heating and melting the dried blend by a screw extruder, wherein the melting temperature is 230-290 ℃, and extruding, stretching, cooling and self-bonding the blend to form a film material. The film material is prepared by mixing degradable materials and polypropylene serving as matrix raw materials and then carrying out melt-blowing, the elasticity of the film material is improved by adding the polypropylene, the poly (adipic acid)/polybutylene terephthalate) and the polylactic acid are degradable materials, and the prepared film material has certain degradability.
Furthermore, the film material comprises 55-66 parts of degradable material, 20-28 parts of polypropylene and 2-5 parts of antistatic component by weight; the thickness of the membrane material is 0.2-0.3 mm. The degradable material comprises one or two of poly (butylene adipate/terephthalate) and polylactic acid which are mixed according to any proportion.
Further, the antistatic component is prepared by the following steps:
under the protection of nitrogen, chloroform and anhydrous ferric chloride are mixed and stirred for 20min, then antibacterial monomer and thiophene are added, after the addition is finished, the stirring reaction is carried out for 40h, after the reaction is finished, the solvent is removed by reduced pressure distillation, acetone is used as the solvent, a Soxhlet extractor is adopted to extract the crude product until the solution is colorless, and the crude product is dried to constant weight at the temperature of 40 ℃ to obtain the antistatic component. The antistatic component belongs to a conductive high molecular polymer, the high temperature resistant effect is good, the antistatic component takes an antibacterial monomer and thiophene as monomers, anhydrous ferric chloride is taken as an oxidant, the antibacterial monomer and the thiophene are polymerized to prepare the antistatic component, the structure is similar to that of polythiophene, the difference is that the antibacterial monomer is added, the main chain of the antibacterial monomer is modified, the mixing effect of the antibacterial monomer and each material in a membrane material is improved, the prepared membrane material is higher in stability and good in cohesiveness, the antistatic component is introduced into the preparation of the membrane material, the antistatic property of the membrane material is improved, and meanwhile, the quaternary ammonium salt structure of the antibacterial monomer has a good antibacterial effect.
Further, the mass ratio of the antibacterial monomer to the thiophene is 1: 8; the dosage ratio of chloroform to anhydrous ferric chloride to thiophene is 20 mL: 1 g: 1g of the total weight of the composition.
Further, the antibacterial monomer is prepared by the following steps:
step S11, mixing p-methylaniline and absolute ethyl alcohol, then adding 3-thiophenecarboxaldehyde, heating and refluxing for 5 hours, then adding distilled water, filtering and drying to obtain an intermediate product 1;
step S12, mixing the intermediate product 1 with carbon tetrachloride, then adding N-bromosuccinimide and benzoyl peroxide, heating and refluxing for 4 hours, decompressing and distilling to remove the solvent after the reaction is finished, washing with absolute ethyl alcohol, and drying to obtain an intermediate product 2;
step S13, mixing the intermediate product 2 and triethyl phosphite, heating and refluxing for reaction for 4 hours, removing the triethyl phosphite by reduced pressure distillation after the reaction is finished, and drying to obtain an intermediate product 3;
step S14, adding the intermediate product 3 and 4-dimethylaminobenzaldehyde into N, N-dimethylformamide, stirring for dissolving, then adding an ethanol solution of potassium tert-butoxide, stirring for reacting for 6 hours at the temperature of 20 ℃ after the addition is finished, and washing and drying after the reaction is finished to obtain an intermediate product 4;
step S15, mixing the intermediate product 4 with acetonitrile, then dissolving bromopentane in acetonitrile, adding, stirring and reacting for 15 hours at the temperature of 70 ℃ under the protection of nitrogen, mixing with ether after the reaction is finished, filtering, and drying the obtained filter cake to obtain an antibacterial monomer; the structure of the antibacterial monomer is as follows:
Figure BDA0003527024850000041
further, the molar ratio of p-methylaniline to 3-thiophenecarboxaldehyde in step S11 is 1: 1.1; absolute ethyl alcohol is used as a solvent; in the step S12, the mass ratio of the intermediate product 1 to the N-bromosuccinimide is 2: 1.3; carbon tetrachloride is used as a solvent; in the step S13, the mass ratio of the intermediate product 2 to the triethyl phosphite is 2.6: 1.7; in step S14, the ratio of the amounts of the intermediate products 3, 4-dimethylaminobenzaldehyde and potassium tert-butoxide is 3.3 g: 1.5 g: 1mL of N, N-dimethylformamide is used as a solvent, and an ethanol solution of potassium tert-butoxide is prepared by mixing potassium tert-butoxide and absolute ethanol according to the dosage ratio of 0.5 g: 10mL of the mixture is mixed; in the step S15, the mass ratio of the intermediate product 4 to the bromopentane is 3.3: 1.6, acetonitrile as solvent.
Further, the outer layer is a textile fabric, and the textile fabric is prepared through the following steps:
blending polyester fiber, alginic acid fiber and graphene fiber into blended yarns, and weaving and forming by adopting the blended yarns in the warp direction and/or the weft direction to obtain the textile fabric, wherein the polyester fiber, the alginic acid fiber and the graphene fiber are mixed according to the mass ratio of 1: 3: 1, blending.
A preparation method of a medical antistatic fabric comprises the following steps:
after the outer layer, the base layer and the inner layer are sequentially placed, pressurizing and heat-treating for 15-20min under the conditions that the temperature is 52-54 ℃ and the pressure is 0.5-0.55MPa to obtain the medical antistatic fabric.
The invention has the beneficial effects that:
the medical antistatic fabric comprises an inner layer, an outer layer and a base layer arranged between the inner layer and the outer layer, wherein the inner layer is made of cotton fabrics, the moisture absorption and sweat releasing effects are good, the cotton fabrics have good moisture absorption and air permeability and are not easy to generate static electricity, bacteria are easy to breed due to the good moisture absorption, 3-aminocoumarin and cyanuric chloride are used as raw materials in a finishing agent to prepare a coumarin derivative, and the anti-oxidation and anti-bacterial effects of the coumarin derivative are utilized to improve the using effect of the cotton fabrics.
The film material is prepared by mixing a degradable material and polypropylene serving as matrix raw materials and then melt-blowing, the added antistatic component belongs to a conductive high-molecular polymer, the high-temperature resistant effect is good, the prepared film material is higher in stability and good in cohesiveness, the antistatic component is introduced into the preparation of the film material, the antistatic property of the film material is improved, and meanwhile, the quaternary ammonium salt structure of the antibacterial monomer has a good antibacterial effect. The inner layer, the outer layer and the base layer arranged between the inner layer and the outer layer are compounded, so that the antistatic composite material has a good antistatic effect.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Preparing an antistatic component:
step S11, mixing p-methylaniline and absolute ethyl alcohol, then adding 3-thiophenecarboxaldehyde, heating and refluxing for 5 hours, then adding distilled water, filtering and drying to obtain an intermediate product 1; the molar ratio of p-methylaniline to 3-thiophenecarboxaldehyde is 1: 1.1; absolute ethyl alcohol is used as a solvent;
step S12, mixing the intermediate product 1 with carbon tetrachloride, then adding N-bromosuccinimide and benzoyl peroxide, heating and refluxing for 4 hours, decompressing and distilling to remove the solvent after the reaction is finished, washing with absolute ethyl alcohol, and drying to obtain an intermediate product 2; the mass ratio of the intermediate product 1 to the N-bromosuccinimide is 2: 1.3; carbon tetrachloride is used as a solvent;
step S13, mixing the intermediate product 2 and triethyl phosphite, heating and refluxing for reaction for 4 hours, removing the triethyl phosphite by reduced pressure distillation after the reaction is finished, and drying to obtain an intermediate product 3; the mass ratio of the intermediate product 2 to the triethyl phosphite is 2.6: 1.7;
step S14, adding the intermediate product 3 and 4-dimethylaminobenzaldehyde into N, N-dimethylformamide, stirring for dissolving, then adding an ethanol solution of potassium tert-butoxide, stirring for reacting for 6 hours at the temperature of 20 ℃ after the addition is finished, and washing and drying after the reaction is finished to obtain an intermediate product 4; the dosage ratio of the intermediate product 3, 4-dimethylaminobenzaldehyde and potassium tert-butoxide is 3.3 g: 1.5 g: 1mL of N, N-dimethylformamide is used as a solvent, and an ethanol solution of potassium tert-butoxide is prepared by mixing potassium tert-butoxide and absolute ethanol according to the dosage ratio of 0.5 g: 10mL of the mixture is mixed;
step S15, mixing the intermediate product 4 with acetonitrile, then dissolving bromopentane in acetonitrile, adding, stirring and reacting for 15 hours at the temperature of 70 ℃ under the protection of nitrogen, mixing with ether after the reaction is finished, filtering, and drying the obtained filter cake to obtain an antibacterial monomer; the mass ratio of the intermediate product 4 to the bromopentane is 3.3: 1.6, acetonitrile as solvent.
Under the protection of nitrogen, mixing chloroform and anhydrous ferric chloride, stirring for 20min, then adding an antibacterial monomer and thiophene, stirring for reacting for 40h, after the reaction is finished, distilling under reduced pressure to remove the solvent, using acetone as the solvent, extracting the crude product by using a Soxhlet extractor until the solution is colorless, and drying to constant weight at 40 ℃ to obtain an antistatic component; the mass ratio of the antibacterial monomer to the thiophene is 1: 8; the dosage ratio of chloroform to anhydrous ferric chloride to thiophene is 20 mL: 1 g: 1g of the total weight of the composition.
Example 2
Preparing a membrane material;
weighing the degradable material and the polypropylene according to the weight parts, and mixing to obtain a mixture; adding the antistatic component prepared in the example 1 into the mixture, blending, extruding the mixture by a double-screw extruder to obtain a blend, drying the blend in vacuum at the extrusion temperature of 220 ℃ for 16h at the temperature of 80 ℃, heating and melting the dried blend by a screw extruder at the melting temperature of 230 ℃, extruding, stretching, cooling and self-bonding to form a film material. Wherein, the film material comprises 55 parts of degradable material, 20 parts of polypropylene and 2 parts of antistatic component by weight; the thickness of the membrane material was 0.2 mm. The degradable material comprises polybutylene adipate/terephthalate and polylactic acid according to the mass ratio of 1: 1 and mixing.
Example 3
Preparing a membrane material;
weighing the degradable material and the polypropylene according to the weight parts, and mixing to obtain a mixture; adding the antistatic component prepared in the example 1 into the mixture, blending, extruding the mixture by a double-screw extruder to obtain a blend, drying the blend in vacuum at the extrusion temperature of 240 ℃ for 20 hours at the temperature of 80 ℃, heating and melting the dried blend by a screw extruder at the melting temperature of 260 ℃, extruding, stretching, cooling and self-bonding to form a film material. Wherein, the film material comprises 60 parts of degradable material, 24 parts of polypropylene and 3 parts of antistatic component by weight; the thickness of the membrane material was 0.2 mm. The degradable material comprises polybutylene adipate/terephthalate and polylactic acid according to the mass ratio of 1: 1 and mixing.
Example 4
Preparing a membrane material;
weighing the degradable material and the polypropylene according to the weight parts, and mixing to obtain a mixture; adding the antistatic component prepared in the example 1 into the mixture, blending, extruding the mixture by a double-screw extruder to obtain a blend, drying the blend in vacuum at the extrusion temperature of 250 ℃ for 24 hours at the temperature of 80 ℃, heating and melting the dried blend by a screw extruder at the melting temperature of 290 ℃, extruding, stretching, cooling and self-bonding to form a film material. Wherein the film material comprises 66 parts of degradable material, 28 parts of polypropylene and 5 parts of antistatic component by weight; the thickness of the membrane material was 0.3 mm. The degradable material comprises polybutylene adipate/terephthalate and polylactic acid according to the mass ratio of 1: 1 and mixing.
Comparative example 1
The antistatic component in example 3 was replaced with sodium dodecylbenzenesulfonate, an organic sulfonate antistatic agent, and the remaining raw materials and preparation process remained unchanged.
The film materials prepared in examples 2-4 and comparative example 1 were subjected to performance tests, and the antistatic performance was measured according to GB/T12703-1991, and the friction charge density was less than 3 μ C/m2(ii) a Cutting into 100mm × 100mm samples, and immersing the membrane material into the solution with a concentration of 103Putting the staphylococcus aureus in a volume/mL of staphylococcus aureus liquid, irradiating the staphylococcus aureus liquid under 40W of light, oscillating the staphylococcus aureus liquid for 1 hour at 25 ℃, counting the number of bacteria by adopting a flat plate after the irradiation is finished, and calculating the bacteriostasis rate;
the test results are shown in table 1 below:
TABLE 1
Figure BDA0003527024850000071
Figure BDA0003527024850000081
Example 5
Preparing cotton fabric:
mixing 3-aminocoumarin, sodium carbonate and deionized water, then mixing cyanuric chloride and acetone, adding the mixture, adding a sodium carbonate aqueous solution to maintain the pH value to be 7, stirring and reacting for 4 hours at the temperature of 40 ℃, filtering after the reaction is finished, washing and drying the obtained filter cake to obtain a finishing agent; the dosage ratio of cyanuric chloride, 3-aminocoumarin and sodium carbonate is 0.05 mol: 0.1 mol: 0.05 mol; acetone is used as a solvent, and the mass fraction of the sodium carbonate aqueous solution is 20%;
at the temperature of 60 ℃, the finishing agent and deionized water are mixed according to the weight ratio of 30 g: 1L of the mixture is mixed to obtain finishing liquor, the finishing liquor and the fabric are mixed and soaked for 20min, then sodium chloride is added, the temperature is raised to 90 ℃ after 15min, then sodium carbonate is added to keep the temperature unchanged, and after 60min, the cotton fabric is obtained through cooling, washing and drying; wherein the dosage ratio of the finishing liquid to the fabric to the sodium chloride to the sodium carbonate is 2L: 10 g: 5 g: 20 g.
Comparative example 2
This comparative example is the fabric of example 5.
And (3) testing the antibacterial effect, referring to GB/T20944.1-2007 evaluation part 1 of antibacterial performance of textiles: agar diffusion method, the test results are shown in table 2 below:
TABLE 2
Figure BDA0003527024850000082
Example 6
A medical antistatic fabric comprises an inner layer, an outer layer and a base layer arranged between the inner layer and the outer layer, wherein the thickness of the outer layer is 0.2mm, and the thickness of the inner layer is 0.1 mm;
the inner layer is the cotton fabric prepared in the embodiment 5, and the base layer is the membrane material prepared in the embodiment 4; the outer layer is textile fabric which is prepared by the following steps: blending polyester fiber, alginic acid fiber and graphene fiber into blended yarns, and weaving and forming by adopting the blended yarns in the warp direction and the weft direction to obtain the textile fabric, wherein the polyester fiber, the alginic acid fiber and the graphene fiber are mixed according to the mass ratio of 1: 3: 1, blending.
And (3) placing the outer layer, the base layer and the inner layer in sequence, and then carrying out pressure heat treatment for 15min at the temperature of 52 ℃ and the pressure of 0.5MPa to obtain the medical antistatic fabric.
Example 7
A medical antistatic fabric comprises an inner layer, an outer layer and a base layer arranged between the inner layer and the outer layer, wherein the thickness of the outer layer is 0.3mm, and the thickness of the inner layer is 0.3 mm;
the inner layer is the cotton fabric prepared in the embodiment 5, and the base layer is the membrane material prepared in the embodiment 4; the outer layer is textile fabric which is prepared by the following steps: blending polyester fiber, alginic acid fiber and graphene fiber into blended yarns, and weaving and forming by adopting the blended yarns in the warp direction and the weft direction to obtain the textile fabric, wherein the polyester fiber, the alginic acid fiber and the graphene fiber are mixed according to the mass ratio of 1: 3: 1, blending.
And (3) placing the outer layer, the base layer and the inner layer in sequence, and then carrying out pressure heat treatment for 20min at the temperature of 54 ℃ and the pressure of 0.55MPa to obtain the medical antistatic fabric.
In the description of the specification, reference to the description of "one embodiment," "an example," "a specific example" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.

Claims (8)

1. The utility model provides a medical antistatic fabric, comprises inlayer, skin and the basic unit that sets up between inlayer and skin, its characterized in that, the basic unit comprises the membrane material, and the inlayer is cotton fabric, and the skin is textile fabric, the membrane material is prepared through following step:
weighing the degradable material and the polypropylene according to the weight parts, and mixing to obtain a mixture; adding the antistatic component into the mixture for blending, then extruding the mixture by a double-screw extruder to obtain a blend, wherein the extrusion temperature is 220-250 ℃, then drying the blend in vacuum for 16-24h at 80 ℃, heating and melting the dried blend by the screw extruder, wherein the melting temperature is 230-290 ℃, and extruding, stretching, cooling and self-bonding the blend to form a film material.
2. The medical antistatic fabric as claimed in claim 1, wherein the cotton fabric is prepared by the following steps:
mixing 3-aminocoumarin, sodium carbonate and deionized water, then mixing cyanuric chloride and acetone, adding a sodium carbonate aqueous solution to maintain the pH value at 7, stirring and reacting for 4 hours at the temperature of 40 ℃, filtering after the reaction is finished, washing and drying the obtained filter cake to obtain a finishing agent;
at the temperature of 60 ℃, the finishing agent and deionized water are mixed according to the weight ratio of 30 g: 1L of the mixture is mixed to obtain finishing liquor, the finishing liquor and the fabric are mixed and soaked for 20min, then sodium chloride is added, the temperature is raised to 90 ℃ after 15min, then sodium carbonate is added to keep the temperature unchanged, and after 60min, the cotton fabric is obtained through cooling, washing and drying.
3. The medical antistatic fabric as claimed in claim 1, wherein the textile fabric is prepared by the following steps:
blending polyester fiber, alginic acid fiber and graphene fiber into blended yarn, weaving, making textile fabric, wherein polyester fiber, alginic acid fiber and graphene fiber are according to mass ratio 1: 3: 1, blending.
4. The medical antistatic fabric as claimed in claim 1, wherein the film material comprises, by weight, 55-66 parts of degradable material, 20-28 parts of polypropylene and 2-5 parts of antistatic component; the thickness of the membrane material is 0.2-0.3 mm.
5. The medical antistatic fabric as claimed in claim 4, wherein the antistatic component is prepared by the following steps:
under the protection of nitrogen, chloroform and anhydrous ferric chloride are mixed and stirred for 20min, then antibacterial monomer and thiophene are added, and after the addition is finished, stirring reaction is carried out for 40h, so as to obtain the antistatic component.
6. The medical antistatic fabric according to claim 5, wherein the antibacterial monomer is prepared by the following steps:
step S11, mixing p-methylaniline and absolute ethyl alcohol, then adding 3-thiophenecarboxaldehyde, heating and refluxing for 5 hours, then adding distilled water, filtering and drying to obtain an intermediate product 1;
step S12, mixing the intermediate product 1 with carbon tetrachloride, then adding N-bromosuccinimide and benzoyl peroxide, heating and refluxing for 4 hours, decompressing and distilling to remove the solvent after the reaction is finished, washing with absolute ethyl alcohol, and drying to obtain an intermediate product 2;
step S13, mixing the intermediate product 2 and triethyl phosphite, heating and refluxing for reaction for 4 hours, removing the triethyl phosphite by reduced pressure distillation after the reaction is finished, and drying to obtain an intermediate product 3;
step S14, adding the intermediate product 3 and 4-dimethylaminobenzaldehyde into N, N-dimethylformamide, stirring for dissolving, then adding an ethanol solution of potassium tert-butoxide, stirring for reacting for 6 hours at the temperature of 20 ℃ after the addition is finished, and washing and drying after the reaction is finished to obtain an intermediate product 4;
and step S15, mixing the intermediate product 4 with acetonitrile, dissolving bromopentane in acetonitrile, adding, stirring and reacting for 15 hours at the temperature of 70 ℃ under the protection of nitrogen, mixing with diethyl ether after the reaction is finished, filtering, and drying the obtained filter cake to obtain the antibacterial monomer.
7. The preparation method of the medical antistatic fabric according to claim 1, which is characterized by comprising the following steps: and (3) placing the outer layer, the base layer and the inner layer in sequence, and then carrying out pressure heat treatment for 15-20min to obtain the medical antistatic fabric.
8. The preparation method of the medical antistatic fabric as claimed in claim 7, wherein the pressure heat treatment is carried out at a temperature of 52-54 ℃ and a pressure of 0.5-0.55 MPa.
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