CN111602903A - Preparation process method of high-polymer-material high-filterability non-woven mask - Google Patents
Preparation process method of high-polymer-material high-filterability non-woven mask Download PDFInfo
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- CN111602903A CN111602903A CN202010594295.5A CN202010594295A CN111602903A CN 111602903 A CN111602903 A CN 111602903A CN 202010594295 A CN202010594295 A CN 202010594295A CN 111602903 A CN111602903 A CN 111602903A
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/02—Layered materials
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/14—Air permeable, i.e. capable of being penetrated by gases
- A41D31/145—Air permeable, i.e. capable of being penetrated by gases using layered materials
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
-
- 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
- D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/56—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 by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
-
- 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
- D06M10/025—Corona discharge or low temperature plasma
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/20—Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Nonwoven Fabrics (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention discloses a preparation process method of a high-polymer material high-filtration non-woven fabric mask, which belongs to the technical field of high-filtration non-woven fabric mask preparation, wherein a non-woven fabric mask body and a pair of ear hooking parts are of an integrally formed structure, the non-woven fabric mask body sequentially comprises a biodegradable non-woven fabric, purified non-woven cotton, double-layer melt-blown cloth and a polypropylene melt-blown superfine fiber non-woven fabric inner layer four-layer structure from the position far away from the mouth and the nose to the position close to the mouth and the nose, a 325-mesh white nano microporous adsorbent layer with harmful gas adsorption function is added between the double-layer melt-blown cloth, after the mask is formed and before packaging, the mask is folded, and a forming strip with a supporting function is added on a central axis taking a nose bridge as an axis from the lower eyelid to the lower chin of the mask in a hot melting way, the equipment is simple, the process flow is short, the energy consumption is low, the multi-layer structure, has good economic value.
Description
Technical Field
The invention relates to the technical field of high-filterability non-woven fabric mask preparation, in particular to a preparation process method of a high-polymer material high-filterability non-woven fabric mask.
Background
The non-woven fabric is also called non-woven fabric, is composed of directional or random fibers, and has the characteristics of moisture resistance, air permeability, flexibility, light weight, easy decomposition, no toxicity, no irritation and the like. The melt-blown non-woven fabric is a novel technology with development prospect, and the PM2.5 comprises the main components of fine solid particles, dust, nitric oxide, sulfide and the like. At present, most of the existing masks without active carbon can block fine solid particles, harmful gas can still permeate the masks to enter human bodies, namely, the masks mainly play a role in filtering, basically have no effect of adsorbing the harmful gas, the adsorption effect of some harmful gas is not ideal enough, meanwhile, the non-woven fabrics on the masks have excellent mechanical property and higher thermal decomposition temperature, but due to the existence of polypropylene, the degradability of the non-woven fabrics needs to be further improved, and therefore, a preparation process method of the non-woven fabrics mask with high filtering property made of high polymer materials is provided.
Disclosure of Invention
The invention aims to provide a preparation process method of a high-polymer material high-filterability non-woven mask, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a preparation technology method of high filtering nature non-woven fabrics gauze mask of macromolecular material, non-woven fabrics gauze mask includes non-woven fabrics gauze mask body and a pair of ear portion of colluding, and non-woven fabrics gauze mask body and a pair of ear portion of colluding are the integrated into one piece structure, and non-woven fabrics gauze mask body includes biodegradable non-woven fabrics from keeping away from the mouth nose to being close to the order of mouth nose in proper order, purify the non-woven cotton, double-deck melt-blown cloth and polypropylene melt-blown superfine fiber non-woven fabrics inlayer four-layer structure, and it has 325 mesh white nanometer micropore adsorbent layer to add between double-deck melt-blown cloth that have the harmful gas function of absorption, the concrete:
the method comprises the following steps: four groups of raw material reels forming the mask are sequentially placed on a conveying device for conveying the raw material reels;
step two: firstly, feeding a conveying raw material reel on a conveying device into a powder brushing device added with a white nano microporous adsorbent, and brushing a white nano microporous adsorbent layer between double layers of melt-blown cloth;
step three: after plastering and finishing the wall, conveying the four layers of conveying raw material reels to a mask forming device for forming, wherein the forming process sequentially comprises the steps of carrying out hot melting on the positions, close to the lower eyelid, of the four groups of raw material reels and the positions between the positions of the lower eyelid and the positions of the chin, adding a nose patch attached to the nose bridge on the mask close to the nose bridge, carrying out completely sealed cutting on the edge of the mask, and carrying out hot melting on a pair of ear hooking parts of the mask;
step four: after the mask is formed and before the mask is packaged, the mask is folded in half, a forming strip with a supporting effect is added on a central axis taking the nose bridge as an axis from the lower eyelid of the mask to the chin of the mask in a hot melting mode, and finally the formed mask is packaged.
The white nano microporous adsorbent is a magnesium-aluminum composite metal oxide obtained by burning a magnesium-aluminum hydrotalcite structure in a muffle furnace at 400-600 ℃, so that the double-layer melt-blown cloth can be promoted to have the function of adsorbing harmful gas.
The biodegradable non-woven fabric is prepared by adopting biodegradable poly (butylene adipate)/terephthalate as a raw material through a melt-blowing process, and the preparation method of the biodegradable non-woven fabric comprises the following steps:
(1) carrying out vacuum drying on the polybutylene adipate/terephthalate particles, wherein the vacuum drying temperature is 70-90 ℃, and the drying time is 24-48 h;
(2) heating, melting and extruding the dried polybutylene adipate/terephthalate particles into a melt through a screw extruder, wherein the melting temperature is 200-270 ℃, when the melt is extruded from a spinneret orifice of a die head, the melt is blown by high-pressure hot air flow at two sides of the spinneret orifice, the polybutylene adipate/terephthalate melt is stretched into superfine fibers, the superfine fibers are condensed on a drum receiver away from a nozzle and self-bonded into non-woven fabrics, the distance between the drum receiver and the nozzle is 15-30cm, the rotating speed of the drum is 30r/min, the flow rate of the hot air flow at two sides of the spinneret orifice is 100-300m/sec, the temperature is 190-320 ℃, and after cooling, the non-woven fabrics are taken down from the drum by a blade and are placed into a drying box for drying and shaping, so that the biodegradable non-woven fabrics are obtained.
The preparation method of the polypropylene melt-blown superfine fiber non-woven fabric inner layer comprises the following specific steps:
(1) placing the special tourmaline with the grain diameter of 400-600 nanometers into a high-speed mixer, preheating and stirring for 20 minutes, adding low-density polyethylene wax and an antioxidant which are 5 percent of the weight of the special tourmaline, then adding coupling agent titanate which is 5 percent of the weight of the special tourmaline for three times, respectively stirring for 20 minutes, taking out, keeping the constant temperature at 105 ℃ in a drying box, and continuously drying for 2 hours;
(2) the treated special tourmaline particles and polypropylene slices are mixed in a proportion of 1: 4, adding the mixture into a mixer in proportion, mixing for about 10 minutes, melting and extruding the mixed special tourmaline particles and polypropylene slices at the temperature of 120-140 ℃, cooling in a water bath, and cutting the special tourmaline particles into granules to obtain modified master batches;
(3) the prepared modified master batch is uniformly mixed with polypropylene slices according to the mass percentage of 40 percent at the temperature of 230 +/-1 ℃, the melt flow index is 1200g/10min, the melt-blown non-woven fabric inner layer is prepared, the melt-blown non-woven fabric inner layer is electret through corona discharge, the polypropylene melt-blown superfine fiber non-woven fabric inner layer containing tourmaline can be prepared, the surface charge density of a fiber web is obviously increased, the storage capacity of the electret charge is enhanced, the filtering efficiency is high, the surface charge density can reach 10 mu c/m2, the diameter of particles is less than 0.26 mu m, and the filtering efficiency reaches 92 percent when the filtering resistance is about 7 Pa.
Compared with the prior art, the invention has the beneficial effects that:
1. the biodegradable non-woven fabric is adopted, and has the characteristics of moisture resistance, air permeability, flexibility, light weight, no combustion supporting, easy decomposition, no toxicity, no irritation, low price, recycling and the like, the biodegradable non-woven fabric can be used as a dust filtering layer to effectively adsorb solid particles or dust in the air, the purified non-woven fabric has a certain filtering and adsorbing effect on the solid particles or dust in the air, the soft comfort degree of the mask is increased, the experience feeling of a wearer is improved, on the other hand, the biodegradable non-woven fabric and the purified non-woven fabric are white, the cleanliness of the mask is convenient for the wearer to observe, and the protection of the mask on a human body is improved;
2. the double-layer melt-blown cloth and the polypropylene melt-blown superfine fiber non-woven fabric inner layer are used for preparing the non-woven fabric by a melt-blown method, so that the non-woven fabric has the characteristics of small fiber diameter, good mechanical property, large specific surface area, high porosity, high filtering efficiency and the like, has the characteristics of high filtering and low resistance flow, has outstanding blocking capacity and capturing capacity on PM2.5 air particles, is added with a 325-mesh white nano microporous adsorbent layer with harmful gas adsorption function between the double-layer melt-blown cloth, and can be captured by an electrostatic field and weak current generated by material components when the fine particles pass through the gaps of a PM2.5 mask by high-efficiency filtration, the filtering pressure difference is about 30 times lower than that of the conventional one, and the air permeability can be greatly improved under the same filtering efficiency;
3. the method has the advantages of simple equipment, short process flow and low energy consumption, can prepare the adsorption mask with high filtration efficiency and designed by a multilayer structure in a simple and rapid mode, is convenient for industrial production, and has good economic value.
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.
Examples
The utility model provides a preparation technology method of high filtering nature non-woven fabrics gauze mask of macromolecular material, non-woven fabrics gauze mask includes non-woven fabrics gauze mask body and a pair of ear portion of colluding, and non-woven fabrics gauze mask body and a pair of ear portion of colluding are the integrated into one piece structure, and non-woven fabrics gauze mask body includes biodegradable non-woven fabrics from keeping away from the mouth nose to being close to the order of mouth nose in proper order, purify the non-woven cotton, double-deck melt-blown cloth and polypropylene melt-blown superfine fiber non-woven fabrics inlayer four-layer structure, and it has 325 mesh white nanometer micropore adsorbent layer to add between double-deck melt-blown cloth that have the harmful gas function of absorption, the concrete:
the method comprises the following steps: four groups of raw material reels forming the mask are sequentially placed on a conveying device for conveying the raw material reels;
step two: firstly, feeding a conveying raw material reel on a conveying device into a powder brushing device added with a white nano microporous adsorbent, and brushing a white nano microporous adsorbent layer between double layers of melt-blown cloth;
step three: after plastering and finishing the wall, conveying the four layers of conveying raw material reels to a mask forming device for forming, wherein the forming process sequentially comprises the steps of carrying out hot melting on the positions, close to the lower eyelid, of the four groups of raw material reels and the positions between the positions of the lower eyelid and the positions of the chin, adding a nose patch attached to the nose bridge on the mask close to the nose bridge, carrying out completely sealed cutting on the edge of the mask, and carrying out hot melting on a pair of ear hooking parts of the mask;
step four: after the mask is formed and before the mask is packaged, the mask is folded in half, a forming strip with a supporting effect is added on a central axis taking the nose bridge as an axis from the lower eyelid of the mask to the chin of the mask in a hot melting mode, and finally the formed mask is packaged.
The white nano microporous adsorbent is a magnesium-aluminum composite metal oxide obtained by burning a magnesium-aluminum hydrotalcite structure in a muffle furnace at 500 ℃;
the biodegradable non-woven fabric is prepared by adopting biodegradable poly (butylene adipate)/terephthalate as a raw material through a melt-blowing process, and the preparation method of the biodegradable non-woven fabric comprises the following steps:
(1) carrying out vacuum drying on the polybutylene adipate/terephthalate particles, wherein the vacuum drying temperature is 80 ℃, and the drying time is 48 h;
(2) heating, melting and extruding the dried polybutylene adipate/terephthalate particles into a melt through a screw extruder, wherein the melting temperature is 250 ℃, when the melt is extruded from a spinneret orifice of a die head, the melt is blown by high-pressure hot air flows at two sides of the spinneret orifice, the polybutylene adipate/terephthalate melt is stretched into superfine fibers, the superfine fibers are condensed on a drum receiver away from a nozzle and self-bonded into a non-woven fabric, the distance between the drum receiver and the nozzle is 20cm, the rotating speed of a drum is 30r/min, the flow rate of the hot air flows at two sides of the spinneret orifice is 200m/sec, the temperature is 250 ℃, the non-woven fabric is taken down from the drum by a blade after being cooled and is placed into a drying box for drying and shaping, and the obtained biodegradable non-woven fabric is obtained;
the preparation method of the polypropylene melt-blown superfine fiber non-woven fabric inner layer comprises the following specific steps:
(1) placing the special tourmaline with the grain diameter of 400-600 nanometers into a high-speed mixer, preheating and stirring for 20 minutes, adding low-density polyethylene wax and an antioxidant which are 5 percent of the weight of the special tourmaline, then adding coupling agent titanate which is 5 percent of the weight of the special tourmaline for three times, respectively stirring for 20 minutes, taking out, keeping the constant temperature at 105 ℃ in a drying box, and continuously drying for 2 hours;
(2) the treated special tourmaline particles and polypropylene slices are mixed in a proportion of 1: 4 proportion is added into a mixer to be mixed for about 10 minutes, then the mixed special tourmaline particles and polypropylene slices are melted and extruded at the temperature of 130 ℃, cooled in water bath and cut into particles to prepare modified master batch;
(3) the prepared modified master batch is uniformly mixed with polypropylene slices according to the mass percentage of 40 percent at the temperature of 230 +/-1 ℃, the melt flow index is 1200g/10min, the melt-blown non-woven fabric inner layer is prepared, the melt-blown non-woven fabric inner layer is electret through corona discharge, the polypropylene melt-blown superfine fiber non-woven fabric inner layer containing tourmaline can be prepared, the surface charge density of a fiber web is obviously increased, the storage capacity of the electret charge is enhanced, the filtering efficiency is high, the surface charge density can reach 10 mu c/m2, the diameter of particles is less than 0.26 mu m, and the filtering efficiency reaches 92 percent when the filtering resistance is about 7 Pa.
The invention adopts biodegradable non-woven fabrics, which has the characteristics of moisture resistance, ventilation, flexibility, light weight, no combustion supporting, easy decomposition, no toxicity, no irritation, low price, recycling and the like, the biodegradable non-woven fabrics can be used as a dust filtering layer to effectively adsorb solid particles or dust in the air, the purified non-woven fabrics not only have certain filtering and adsorbing effects on the solid particles or dust in the air, but also increase the soft comfort of the mask and improve the experience of a wearer, on the other hand, the biodegradable non-woven fabrics and the purified non-woven fabrics are white, so that the cleanness of the mask can be conveniently observed by the wearer, the protection of the mask on a human body is improved, and the non-woven fabrics are prepared by adopting a melt-blowing method by adopting a double-layer melt-blown fabric and a polypropylene melt-blown superfine fiber non-woven fabric inner layer, so that the non-woven fabrics have the, The mask has the characteristics of high porosity, excellent filtering efficiency and the like, has the characteristics of high filtering and low flow resistance, and can greatly improve the air permeability of the mask under the condition of higher filtering efficiency.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A preparation process method of a high-polymer material high-filterability non-woven mask is characterized by comprising the following steps: non-woven fabrics gauze mask includes that non-woven fabrics gauze mask body and a pair of ear collude the portion of hanging, and non-woven fabrics gauze mask body and a pair of ear collude the portion of hanging and be the integrated into one piece structure, and non-woven fabrics gauze mask body includes biodegradable non-woven fabrics from keeping away from the oronasal in proper order to being close to the oronasal, purify the non-woven cotton, double-deck melt-blown cloth and polypropylene melt-blown superfine fiber non-woven fabrics inlayer four-layer structure, and it has the white nanometer micropore adsorbent layer that has 325 mesh that adsorbs harmful gas function to add between double-deck melt-blown cloth, the concrete step of non-:
the method comprises the following steps: four groups of raw material reels forming the mask are sequentially placed on a conveying device for conveying the raw material reels;
step two: firstly, feeding a conveying raw material reel on a conveying device into a powder brushing device added with a white nano microporous adsorbent, and brushing a white nano microporous adsorbent layer between double layers of melt-blown cloth;
step three: after plastering and finishing the wall, conveying the four layers of conveying raw material reels to a mask forming device for forming, wherein the forming process sequentially comprises the steps of carrying out hot melting on the positions, close to the lower eyelid, of the four groups of raw material reels and the positions between the positions of the lower eyelid and the positions of the chin, adding a nose patch attached to the nose bridge on the mask close to the nose bridge, carrying out completely sealed cutting on the edge of the mask, and carrying out hot melting on a pair of ear hooking parts of the mask;
step four: after the mask is formed and before the mask is packaged, the mask is folded in half, a forming strip with a supporting effect is added on a central axis taking the nose bridge as an axis from the lower eyelid of the mask to the chin of the mask in a hot melting mode, and finally the formed mask is packaged.
2. The preparation process method of the high-polymer material high-filterability non-woven mask according to claim 1, characterized in that: the white nano microporous adsorbent is a magnesium-aluminum composite metal oxide obtained by burning a magnesium-aluminum hydrotalcite structure in a muffle furnace at 400-600 ℃.
3. The preparation process method of the high-polymer material high-filterability non-woven mask according to claim 1, characterized in that: the biodegradable non-woven fabric is prepared by adopting biodegradable poly (butylene adipate)/terephthalate as a raw material through a melt-blowing process, and the preparation method of the biodegradable non-woven fabric comprises the following steps:
(1) carrying out vacuum drying on the polybutylene adipate/terephthalate particles, wherein the vacuum drying temperature is 70-90 ℃, and the drying time is 24-48 h;
(2) heating, melting and extruding the dried polybutylene adipate/terephthalate particles into a melt through a screw extruder, wherein the melting temperature is 200-270 ℃, when the melt is extruded from a spinneret orifice of a die head, the melt is blown by high-pressure hot air flow at two sides of the spinneret orifice, the polybutylene adipate/terephthalate melt is stretched into superfine fibers, the superfine fibers are condensed on a drum receiver away from a nozzle and self-bonded into non-woven fabrics, the distance between the drum receiver and the nozzle is 15-30cm, the rotating speed of the drum is 30r/min, the flow rate of the hot air flow at two sides of the spinneret orifice is 100-300m/sec, the temperature is 190-320 ℃, and after cooling, the non-woven fabrics are taken down from the drum by a blade and are placed into a drying box for drying and shaping, so that the biodegradable non-woven fabrics are obtained.
4. The preparation process method of the high-polymer material high-filterability non-woven mask according to claim 1, characterized in that: the preparation method of the polypropylene melt-blown superfine fiber non-woven fabric inner layer comprises the following specific steps:
(1) placing the special tourmaline with the grain diameter of 400-600 nanometers into a high-speed mixer, preheating and stirring for 20 minutes, adding low-density polyethylene wax and an antioxidant which are 5 percent of the weight of the special tourmaline, then adding coupling agent titanate which is 5 percent of the weight of the special tourmaline for three times, respectively stirring for 20 minutes, taking out, keeping the constant temperature at 105 ℃ in a drying box, and continuously drying for 2 hours;
(2) the treated special tourmaline particles and polypropylene slices are mixed in a proportion of 1: 4, adding the mixture into a mixer in proportion, mixing for about 10 minutes, melting and extruding the mixed special tourmaline particles and polypropylene slices at the temperature of 120-140 ℃, cooling in a water bath, and cutting the special tourmaline particles into granules to obtain modified master batches;
(3) the prepared modified master batch is uniformly mixed with polypropylene slices according to the mass percentage of 40 percent at the temperature of 230 +/-1 ℃, the melt flow index is 1200g/10min, the melt-blown non-woven fabric inner layer is prepared, the melt-blown non-woven fabric inner layer is electret through corona discharge, the polypropylene melt-blown superfine fiber non-woven fabric inner layer containing tourmaline can be prepared, the surface charge density of a fiber web is obviously increased, the storage capacity of the electret charge is enhanced, the filtering efficiency is high, the surface charge density can reach 10 mu c/m2, the diameter of particles is less than 0.26 mu m, and the filtering efficiency reaches 92 percent when the filtering resistance is about 7 Pa.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112662068A (en) * | 2020-12-31 | 2021-04-16 | 广西德福莱医疗器械有限公司 | Electret master batch material special for melt-blown fabric and preparation method thereof |
| CN112726024A (en) * | 2020-12-31 | 2021-04-30 | 广西德福莱医疗器械有限公司 | Method for manufacturing odorless melt-blown fabric |
| CN112853535A (en) * | 2021-01-15 | 2021-05-28 | 邵阳阳光发品有限公司 | Composite fiber material for wig and preparation method thereof |
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| CN112853535A (en) * | 2021-01-15 | 2021-05-28 | 邵阳阳光发品有限公司 | Composite fiber material for wig and preparation method thereof |
| CN112853535B (en) * | 2021-01-15 | 2021-12-21 | 邵阳阳光发品有限公司 | Composite fiber material for wig and preparation method thereof |
| CN114263037A (en) * | 2021-12-24 | 2022-04-01 | 仙桃市鼎业劳保用品有限公司 | Mask capable of preventing PM2.5 activated carbon and preparation method thereof |
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