CN113068882B - Fully degradable mask and manufacturing method thereof - Google Patents
Fully degradable mask and manufacturing method thereof Download PDFInfo
- Publication number
- CN113068882B CN113068882B CN202110343325.XA CN202110343325A CN113068882B CN 113068882 B CN113068882 B CN 113068882B CN 202110343325 A CN202110343325 A CN 202110343325A CN 113068882 B CN113068882 B CN 113068882B
- Authority
- CN
- China
- Prior art keywords
- polylactic acid
- melt
- pla
- stearate
- mask
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 81
- 239000004626 polylactic acid Substances 0.000 claims abstract description 81
- 229920001896 polybutyrate Polymers 0.000 claims abstract description 40
- 239000000203 mixture Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 19
- 239000000835 fiber Substances 0.000 claims abstract description 16
- 238000009941 weaving Methods 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims description 19
- 238000009987 spinning Methods 0.000 claims description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000002131 composite material Substances 0.000 claims description 15
- 229920001610 polycaprolactone Polymers 0.000 claims description 15
- 239000004970 Chain extender Substances 0.000 claims description 12
- ZFOZVQLOBQUTQQ-UHFFFAOYSA-N Tributyl citrate Chemical compound CCCCOC(=O)CC(O)(C(=O)OCCCC)CC(=O)OCCCC ZFOZVQLOBQUTQQ-UHFFFAOYSA-N 0.000 claims description 12
- 238000007664 blowing Methods 0.000 claims description 11
- 239000004014 plasticizer Substances 0.000 claims description 11
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 9
- 238000009954 braiding Methods 0.000 claims description 8
- 238000002074 melt spinning Methods 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- QZCLKYGREBVARF-UHFFFAOYSA-N Acetyl tributyl citrate Chemical compound CCCCOC(=O)CC(C(=O)OCCCC)(OC(C)=O)CC(=O)OCCCC QZCLKYGREBVARF-UHFFFAOYSA-N 0.000 claims description 6
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 5
- 229920001245 poly(D,L-lactide-co-caprolactone) Polymers 0.000 claims description 5
- 235000012424 soybean oil Nutrition 0.000 claims description 5
- 239000003549 soybean oil Substances 0.000 claims description 5
- JOLVYUIAMRUBRK-UHFFFAOYSA-N 11',12',14',15'-Tetradehydro(Z,Z-)-3-(8-Pentadecenyl)phenol Natural products OC1=CC=CC(CCCCCCCC=CCC=CCC=C)=C1 JOLVYUIAMRUBRK-UHFFFAOYSA-N 0.000 claims description 4
- YLKVIMNNMLKUGJ-UHFFFAOYSA-N 3-Delta8-pentadecenylphenol Natural products CCCCCCC=CCCCCCCCC1=CC=CC(O)=C1 YLKVIMNNMLKUGJ-UHFFFAOYSA-N 0.000 claims description 4
- JOLVYUIAMRUBRK-UTOQUPLUSA-N Cardanol Chemical compound OC1=CC=CC(CCCCCCC\C=C/C\C=C/CC=C)=C1 JOLVYUIAMRUBRK-UTOQUPLUSA-N 0.000 claims description 4
- FAYVLNWNMNHXGA-UHFFFAOYSA-N Cardanoldiene Natural products CCCC=CCC=CCCCCCCCC1=CC=CC(O)=C1 FAYVLNWNMNHXGA-UHFFFAOYSA-N 0.000 claims description 4
- AGXUVMPSUKZYDT-UHFFFAOYSA-L barium(2+);octadecanoate Chemical compound [Ba+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O AGXUVMPSUKZYDT-UHFFFAOYSA-L 0.000 claims description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 4
- 239000000920 calcium hydroxide Substances 0.000 claims description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 4
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 4
- 235000013539 calcium stearate Nutrition 0.000 claims description 4
- 239000008116 calcium stearate Substances 0.000 claims description 4
- PTFIPECGHSYQNR-UHFFFAOYSA-N cardanol Natural products CCCCCCCCCCCCCCCC1=CC=CC(O)=C1 PTFIPECGHSYQNR-UHFFFAOYSA-N 0.000 claims description 4
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 4
- 239000000347 magnesium hydroxide Substances 0.000 claims description 4
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 4
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 3
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 claims description 3
- 229940063655 aluminum stearate Drugs 0.000 claims description 3
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 claims description 3
- 229910001863 barium hydroxide Inorganic materials 0.000 claims description 3
- 235000019359 magnesium stearate Nutrition 0.000 claims description 3
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims 1
- 239000004744 fabric Substances 0.000 abstract description 30
- 238000011282 treatment Methods 0.000 abstract description 6
- 230000001681 protective effect Effects 0.000 abstract description 3
- 229920006237 degradable polymer Polymers 0.000 abstract description 2
- 239000002861 polymer material Substances 0.000 abstract description 2
- 238000009264 composting Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 208000012886 Vertigo Diseases 0.000 description 15
- 239000004750 melt-blown nonwoven Substances 0.000 description 10
- 238000002844 melting Methods 0.000 description 10
- 230000008018 melting Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 238000007493 shaping process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 239000002121 nanofiber Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229920002334 Spandex Polymers 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000004759 spandex Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
-
- 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
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Abstract
The invention belongs to the technical field of protective articles and discloses a fully degradable mask and a manufacturing method thereof. The mask ear belt part is formed by weaving polylactic acid/PBAT blend fibers, and the nose clip part is made of polylactic acid blend materials. The invention uses environment-friendly degradable non-woven fabrics and melt-blown cloth materials to replace the existing PP non-woven fabrics and melt-blown cloth, and the ear belt and the nose part are made of degradable polymer materials, so that after the mask is abandoned, the mask can be directly decomposed into environment-friendly micromolecule substances through composting or landfill without special treatment.
Description
Technical Field
The invention belongs to the technical field of protective articles, and particularly relates to a fully degradable mask and a manufacturing method thereof.
Background
At present, the mask used in the market is a disposable protective mask or a medical mask, and from the aspect of using materials, the mask is made of non-woven fabrics woven by PP monofilaments and melt-blown fabrics of PP materials, and the mask is a non-environment-friendly material, cannot be naturally degraded and has great treatment difficulty after use.
When the recycled masks are treated, an incineration method is generally adopted, and a large amount of waste gas generated by the treatment method pollutes the environment.
In recent years, certain progress has been made in filter materials, particularly disposable masks, which are made from degradable polymeric materials. Chinese patent 202010469176.7 discloses a novel degradable nanofiber mask, wherein a filter element of the novel degradable nanofiber mask comprises graphene oxide, photocatalytic nanoparticles and polylactic acid. The product has good tensile strength, and after repeated rubbing simulation of the actual use condition, the strength of the product is kept good, and the internal structure is not damaged basically. Chinese patent 201910150410.7 discloses a preparation method of electret polylactic acid melt-blown nonwoven material, which is characterized in that inorganic electret material nano silicon nitride and polymer polytetrafluoroethylene are compounded by a mechanical dispersion method to be used as filler, the charge storage capacity of the composite material can be effectively improved in a high-temperature or humid environment, electret aggregation phenomenon is avoided, the service life of a product is prolonged, the composite filler and polylactic acid are subjected to melt spinning treatment, and then the nonwoven material is prepared through the treatments of opening, impurity removal, carding, lapping, pre-needling, water needling, hot rolling and the like. The Chinese patent 201010163359.2 fully-degradable polylactic acid fiber SMS composite non-woven fabric is formed by compounding three layers of non-woven fabrics through self-bonding or hot rolling, wherein the middle layer is a polylactic acid melt-blown non-woven fabric, and the upper layer and the lower layer of the middle layer are polylactic acid spun-bonded non-woven fabrics.
The requirements of preparing a core difficult point of the fully degradable and high-filtering-efficiency mask are comprehensively considered from three components of filter cloth, ear straps and nose clips, and the components are respectively prepared by adopting the existing degradable polymer materials through proper modification, so that the formed mask has the fully degradable environmental protection significance.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a fully degradable mask and a manufacturing method thereof.
The invention is realized in such a way that the fully degradable mask is made of polylactic acid material with an SMS structure, the outer layer is made of polylactic acid spun-bonded non-woven fabric, and the inner layer filter layer is made of superfine polylactic acid melt-blown fibers; the ear belt part is formed by weaving polylactic acid/PBAT blend fiber, and the nose clip part is made of polylactic acid blend material.
Further, the main body part of the fully degradable mask is polylactic acid with high melt flow rate, and the melt flow rate is 50-150 g/10min (2.16 KG,210 ℃).
The invention provides a manufacturing method of a full-degradable mask, which comprises the following steps:
manufacturing a main body part: adding polylactic acid (the melt flow rate is more than or equal to 20g/10min, the temperature is 210 ℃, the pressure is 2.16 KG) and stearate into a screw extruder according to a certain mass ratio ((97.5-99.2): (0.1-2): (0.1-0.5), melting and spraying the polylactic acid into fibers at 220-260 ℃, and enabling hot air temperature at two sides of a melting and spraying die head to be 200-280 ℃, enabling the hot air flow rate to be 100-300 m/s and the receiving distance to be 5-50 cm;
manufacturing an ear belt part;
and (5) manufacturing a nose clip part.
Further, the stearate is as follows: calcium stearate, magnesium stearate, zinc stearate, aluminum stearate, barium stearate, sodium stearate, or a mixture thereof.
The addition amount of the stearate is 0.1-2 wt%.
The inorganic strong base is as follows: barium hydroxide, sodium hydroxide, magnesium hydroxide, aluminum hydroxide, and calcium hydroxide.
The addition amount of the inorganic strong base is 0.1-0.5 wt%.
Further, the ear belt is prepared by PLA/PBAT composite spinning and braiding, and the specific steps are as follows:
mixing PLA/PBAT according to (1-30)/(99-70), adding PLA-b-PBAT copolymer and chain extender, blending and granulating in a double screw extruder, and extruding at 160-220 ℃ to obtain the modified resin. Then spinning in a melt spinning machine at 200-260 ℃ and weaving the ear belt with a hollow structure.
The ear belt is prepared by PLA/PBAT composite spinning and braiding, and the mole ratio of PLA/PBAT in the added PLA-b-PBAT copolymer is 1: 3-3: 1.
further, the ear belt is prepared by PLA/PBAT composite spinning and braiding, and the structure of the added chain extender is as follows:
wherein n: m: r= (2-4): (2-6): (1-3).
The ear belt is prepared by PLA/PBAT composite spinning and braiding, and the addition of the PLA-b-PBAT copolymer is 1-15%.
The ear belt is prepared by PLA/PBAT composite spinning and weaving, and the addition amount of the chain extender is 0.1-1%.
Further, the nose clip is prepared by PLA/PCL blending, and the specific steps are as follows:
polylactic acid, poly epsilon-caprolactone (PCL) and plasticizer are mixed according to the mass ratio of 55:35:10, granulating in a twin-screw extruder at 160 ℃, and then melt-extruding into filaments with specific diameters in a tube extruder, and cutting into nose clips with standard lengths.
Further, the nose clip is prepared by PLA/PCL blending, and the plasticizer specifically refers to: tributyl citrate, acetyl tributyl citrate, epoxidized soybean oil, cardanol, or a mixture thereof.
By combining all the technical schemes, the invention has the advantages and positive effects that: the special resin for the fully-degradable filter cloth, the ear belt and the nose clip is respectively prepared, and corresponding products are prepared, so that good effects are obtained.
The invention uses the environment-friendly degradable non-woven fabric and melt-blown cloth material to replace the existing PP non-woven fabric and melt-blown cloth, thereby achieving the purposes of recycling the mask after use, simple treatment method and no environmental pollution. Specifically, the invention mainly describes a fully degradable mask and a preparation method thereof:
the mask made of the degradable material is made of polylactic acid with an SMS structure, the outer layer is made of polylactic acid spun-bonded non-woven fabrics, and the inner filter layer is made of superfine polylactic acid melt-blown fibers. The mask ear belt part is formed by weaving polylactic acid/PBAT blend fibers, and the nose clip part is made of polylactic acid blend materials.
The core filter layer of the invention is composed of polylactic acid non-woven fabrics with SMS structures, the outer layer is composed of spun-bonded polylactic acid non-woven fabrics, and the inner layer is composed of melt-blown non-woven fabrics. The mask formed by the method has high filtering efficiency and 100% biodegradability, and can solve the problem of environmental pollution of waste masks.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly explain the drawings needed in the embodiments of the present application, and it is obvious that the drawings described below are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for manufacturing an ear strap according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Aiming at the problems existing in the prior art, the invention provides a fully degradable mask and a manufacturing method thereof, and the invention is described in detail below with reference to the accompanying drawings.
The invention provides a full-degradable mask which is made of polylactic acid with an SMS structure, wherein an outer layer is polylactic acid spun-bonded non-woven fabric, and an inner filter layer is prepared from superfine polylactic acid melt-blown fibers; the ear belt part is formed by weaving polylactic acid/PBAT blend fiber, and the nose clip part is made of polylactic acid blend material.
The main body part of the fully degradable mask is polylactic acid with high melt flow rate, and the melt flow rate is 50-150 g/10min (2.16 KG,210 ℃).
The invention also provides a manufacturing method of the full-degradable mask, which comprises the following steps:
manufacturing a main body part: adding polylactic acid (the melt flow rate is more than or equal to 20g/10min, the temperature is 210 ℃, the speed is 2.16 KG) and stearate into a screw extruder according to a certain proportion, and melt-blowing the mixture into fibers at 220-260 ℃, wherein the hot air temperature at two sides of a melt-blowing die head is 200-280 ℃, the hot air flow rate is 100-300 m/s, and the receiving distance is 5-50 cm;
manufacturing an ear belt part;
and (5) manufacturing a nose clip part.
As a preferred embodiment, the stearate is: calcium stearate, magnesium stearate, zinc stearate, aluminum stearate, barium stearate, sodium stearate, or a mixture thereof.
The addition amount of the stearate is 0.1-2 wt%.
The inorganic strong base is as follows: barium hydroxide, sodium hydroxide, magnesium hydroxide, aluminum hydroxide, and calcium hydroxide.
The addition amount of the inorganic strong base is 0.1-0.5 wt%.
As shown in fig. 1, the ear belt is made by PLA/PBAT composite spinning and knitting, and the specific steps are as follows:
s101, mixing PLA/PBAT according to (1-30)/(99-70), adding PLA-b-PBAT copolymer and chain extender, blending and granulating in a double-screw extruder, and extruding at 160-220 ℃ to obtain the modified resin.
S102, spinning in a melt spinning machine at 200-260 ℃ and weaving the ear belt with a hollow structure.
The ear belt is prepared by PLA/PBAT composite spinning and braiding, and the mole ratio of PLA/PBAT in the added PLA-b-PBAT copolymer is 1: 3-3: 1.
as a preferred embodiment, the ear belt is prepared by PLA/PBAT composite spinning and braiding, and the added chain extender has the structure that
Wherein n: m: r= (2-4): (2-6): (1-3).
The ear belt is prepared by PLA/PBAT composite spinning and braiding, and the addition of the PLA-b-PBAT copolymer is 1-15%.
The ear belt is prepared by PLA/PBAT composite spinning and weaving, and the addition amount of the chain extender is 0.1-1%.
As a preferred embodiment, the nose clip portion is prepared from PLA/PCL blend, specifically as follows:
polylactic acid, poly epsilon-caprolactone (PCL) and plasticizer are mixed according to the mass ratio of 55:35:10, granulating in a twin-screw extruder at 160 ℃, and then melt-extruding into filaments with specific diameters in a tube extruder, and cutting into nose clips with standard lengths.
As a preferred embodiment, the nose clip is prepared from PLA/PCL blends, with plasticizers specifically referring to: tributyl citrate, acetyl tributyl citrate, epoxidized soybean oil, cardanol, or a mixture thereof.
The technical scheme of the present invention will be further described with reference to comparative examples and examples.
Comparative example 1
The degradable mask filter cloth with the SMS structure comprises an outer layer formed by a conventional PLA spunbonded non-woven fabric (PLA raw material index: melting point 168 ℃, MFR=8g/10 min,210 ℃,2.16 KG) and an inner layer formed by a melt-blown non-woven fabric, wherein the melting point of PLA is 168 ℃, the MFR=8g/10 min,210 ℃,2.16KG, the melt-blowing temperature is 260 ℃, the hot air temperature is 240 ℃, the hot air flow rate is 300m/s, and the receiving distance is 25cm. The ear belt part is formed by weaving PLA/PBAT 30/70 physical blend after melt spinning and fusing with filter cloth through hot pressing. The nose clip part is prepared by PCL through an extruder bracing piece.
The full-degradable mask prepared by the method has the advantages that the gram weight of filter cloth is 45g/m < 2 >, the filtering efficiency is 95%, the breaking strength of the joint of the ear strap and the mask is 10N, the nose clip is easy to rebound, and the shaping force is avoided.
Comparative example 2
Commercially available masks, SMS structure filter cloth, filter layer of melt-blown PP non-woven fabric, outer layer of spun-bonded PP, ear belt of spandex/terylene material, and nose clip of metal/plastic composite material. According to measurement, the mask filter cloth has 35g of gram weight, the filtering efficiency is 95%, the external breaking strength of the connection of the ear belt and the mask is 22N, and the nose clip shaping property is good.
Example 1
The degradable mask filter cloth with the SMS structure is characterized in that the outer layer is formed by a conventional PLA spunbonded non-woven fabric (PLA raw material index: melting point 168 ℃, MFR=8 g/10min,210 ℃,2.16 KG) and the inner layer is formed by a melt-blown non-woven fabric. The inner layer melt-blown nonwoven fabric was prepared by adding 1wt% of commercially available polylactic acid (melting point 178 ℃ C., melt flow rate 25g/10min,210 ℃ C., 2.16 KG) and calcium stearate, 0.2wt% of calcium hydroxide to a twin-screw extruder, melt-blowing at 220 ℃ C. To form fibers, and hot air at 220 ℃ C., hot air flow rate 200m/s on both sides of a melt-blowing die head, with a receiving distance of 30cm.
The ear belt part is prepared by mixing PLA/PBAT according to a mass ratio of 30/70, adding 5wt% of PLA-b-PBAT copolymer (PLA/PBAT mol ratio of 1:3) and 0.3wt% of chain extender (structural formula is shown in figure 1, wherein n: m: r=3:4:3), blending and granulating in a twin-screw extruder, and extruding at 180 ℃ to obtain the modified resin. Then spinning in a melt spinning machine at 220 ℃ to weave the ear belt with a hollow structure, and heat-sealing the ear belt with the filter cloth main body at 180 ℃.
The nose clip part is prepared by mixing polylactic acid, poly epsilon-caprolactone (PCL) and a plasticizer acetyl tributyl citrate according to a mass ratio of 55:35:10, granulating in a twin-screw extruder at 160 ℃, and then melt-extruding into filaments with the diameter of 0.5mm in a tube extruder, and cutting into nose clips with standard length.
According to measurement, the filter effect of the mask is 40 g, the filter cloth of the mask has the filter efficiency of 99.9%, the external breaking strength of the connection of the ear belt and the mask is 28N, and the nose clip shaping property is good.
Example 2
The degradable mask filter cloth with the SMS structure is characterized in that the outer layer is formed by a conventional PLA spunbonded non-woven fabric (PLA raw material index: melting point 160 ℃, MFR=5 g/10min,210 ℃,2.16 KG) and the inner layer is formed by a melt-blown non-woven fabric. The inner layer melt-blown nonwoven fabric was prepared by adding 0.5wt% of commercially available polylactic acid (melting point 172 ℃ C., melt flow rate 35g/10min,210 ℃ C., 2.16 KG) and zinc stearate, 0.1wt% of sodium hydroxide to a twin-screw extruder, melt-blowing at 240 ℃ to form fibers, and hot air temperature at 220 ℃ at both sides of the melt-blowing die head, hot air flow rate 300m/s, and receiving distance 50cm.
The ear belt part is prepared by mixing PLA/PBAT according to mass ratio of 10/90, adding 15wt% PLA-b-PBAT copolymer (PLA/PBAT molar ratio of 1:1), and 0.1wt% chain extender (structural formula is shown in the specification)
Wherein n: m: r=2: 5: 3) Blending and granulating in a double-screw extruder, wherein the extrusion temperature is 180 ℃ to obtain the modified resin. Then spinning at 230 ℃ in a melt spinning machine, weaving into a ear belt with a hollow structure, and heat-sealing with a filter cloth main body, wherein the sealing temperature is 170 ℃.
The nose clip part is prepared by mixing polylactic acid, poly epsilon-caprolactone (PCL) and tributyl citrate serving as a plasticizer according to a mass ratio of 55:35:10, granulating in a twin-screw extruder at 160 ℃, and then melt-extruding into filaments with the diameter of 0.5mm in a tube extruder, and cutting into nose clips with standard length.
According to measurement, the filter effect of the mask has the filter cloth weight of 30 g, the filter efficiency of 99.5%, the external breaking strength of the connection of the ear belt and the mask of 25N, and the nose clip shaping property is good.
Example 3
The degradable mask filter cloth with the SMS structure is characterized in that the outer layer is formed by a conventional PLA spunbonded non-woven fabric (PLA raw material index: melting point 160 ℃, MFR=5 g/10min,210 ℃,2.16 KG) and the inner layer is formed by a melt-blown non-woven fabric. The inner layer melt-blown nonwoven fabric was prepared by adding commercially available polylactic acid (melting point 165 ℃, melt flow rate 28g/10min,210 ℃,2.16 KG) and barium stearate 0.1wt%, magnesium hydroxide 0.5wt%, and sodium hydroxide 0.1wt% to a twin-screw extruder, melt-blowing at 260 ℃ to form fibers, and hot air temperature 240 ℃ on both sides of a melt-blowing die head, hot air flow rate 100m/s, and receiving distance 10cm.
The ear belt part is prepared by mixing PLA/PBAT according to a mass ratio of 20/80, adding 10wt% of PLA-b-PBAT copolymer (PLA/PBAT mol ratio of 3:1) and 0.5wt% of chain extender (structural formula is shown in figure 1, wherein n: m: r=4:5:1), blending and granulating in a twin-screw extruder, and extruding at 200 ℃ to obtain the modified resin. Then spinning in a melt spinning machine at 230 ℃ to weave the ear belt with a hollow structure, and heat-sealing the ear belt with a filter cloth main body at 190 ℃.
The nose clip part is prepared by mixing polylactic acid, poly epsilon-caprolactone (PCL), plasticizer tributyl citrate and acetyl tributyl citrate according to a mass ratio of 55:35:5:5, mixing, granulating in a twin-screw extruder at 160 ℃, and then carrying out melt extrusion in a tube extruder to obtain filaments with the diameter of 0.5mm, and then cutting into nose clips with standard length.
According to measurement, the filter effect of the mask is 40 g, the filter cloth of the mask has the filter efficiency of 99.9%, the external breaking strength of the connection of the ear belt and the mask is 31N, and the nose clip shaping property is good.
Polylactic acid, poly epsilon-caprolactone (PCL) and plasticizer epoxy soybean oil are mixed according to the mass ratio of 55:35:10, granulating in a twin-screw extruder at 160 ℃, and then melt-extruding into filaments with specific diameters in a tube extruder, and cutting into nose clips with standard lengths.
The plasticizers used are in particular: tributyl citrate, acetyl tributyl citrate, epoxidized soybean oil, cardanol.
The above description is merely illustrative of the embodiments of the present invention, and the present invention is not limited thereto, but any modifications, equivalents, improvements and modifications made by those skilled in the art within the scope of the present invention disclosed herein, are intended to be included within the scope of the present invention.
Claims (2)
1. The fully degradable mask is characterized in that the fully degradable mask is made of polylactic acid material with an SMS structure, the outer layer of the main body part is made of polylactic acid spun-bonded non-woven fabrics, and the inner layer filter layer of the main body part is made of superfine polylactic acid melt-blown fibers;
the ear belt part is formed by weaving polylactic acid/PBAT blend fibers, and the nose clip part is made of polylactic acid blend materials;
the polylactic acid is high melt flow rate polylactic acid, and the melt flow rate is 50-150 g/10min;
the manufacturing method of the fully degradable mask comprises the following steps:
manufacturing a main body part: polylactic acid, stearate and inorganic strong base are mixed according to the mass ratio (97.5-99.2): (0.1-2): (0.1-0.5) adding the mixture into a screw extruder, and carrying out melt-blowing at 220-260 ℃ to form fibers, wherein the temperature of hot air at two sides of a melt-blowing die head is 200-280 ℃, the flow rate of the hot air is 100-300 m/s, and the receiving distance is 5-50 cm;
manufacturing an ear belt part;
manufacturing a nose clip part;
the stearate is as follows: one or more of calcium stearate, magnesium stearate, zinc stearate, aluminum stearate, barium stearate, sodium stearate;
the adding amount of the stearate is 0.1-2wt%;
the inorganic strong base is as follows: one of barium hydroxide, sodium hydroxide, magnesium hydroxide, aluminum hydroxide and calcium hydroxide;
the addition amount of the inorganic strong base is 0.1-0.5 wt%;
the ear belt is prepared by PLA/PBAT composite spinning and braiding, and the specific preparation method is as follows:
mixing PLA/PBAT according to the mass ratio of (1-30)/(99-70), adding PLA-b-PBAT copolymer and chain extender, blending and granulating in a double-screw extruder, and extruding at 160-220 ℃ to obtain modified resin; then spinning in a melt spinning machine at 200-260 ℃ and weaving into a hollow ear belt;
in the added PLA-b-PBAT copolymer, the mole ratio of PLA/PBAT is 1: 3-3: 1, a step of;
the structure of the added chain extender is as follows:
wherein n: m: r= (2-4): (2-6): (1-3);
the addition amount of the copolymer is 1-15 wt%;
the addition amount of the chain extender is 0.1-1 wt%;
the nose clip part is prepared by PLA/PCL blending, and the specific preparation method is as follows:
polylactic acid, poly epsilon-caprolactone (PCL) and plasticizer are mixed according to the mass ratio of 55:35:10, granulating in a twin-screw extruder at 160 ℃, and then melt-extruding into filaments with specific diameters in a tube extruder, and cutting into nose clips with standard lengths.
2. The fully degradable mask of claim 1, wherein the plasticizer is: tributyl citrate, acetyl tributyl citrate, epoxidized soybean oil, cardanol, or a mixture thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110343325.XA CN113068882B (en) | 2021-03-30 | 2021-03-30 | Fully degradable mask and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110343325.XA CN113068882B (en) | 2021-03-30 | 2021-03-30 | Fully degradable mask and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113068882A CN113068882A (en) | 2021-07-06 |
| CN113068882B true CN113068882B (en) | 2024-02-23 |
Family
ID=76611998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110343325.XA Active CN113068882B (en) | 2021-03-30 | 2021-03-30 | Fully degradable mask and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113068882B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113403750B (en) * | 2021-06-28 | 2022-02-25 | 运鸿集团股份有限公司 | Fully-degradable non-woven fabric produced by melt-blowing method and application thereof in medical mask |
| WO2023056562A1 (en) * | 2021-10-06 | 2023-04-13 | Precision Adm Inc. | Disposable, compostable surgical/medical masks and methods of production therefor |
| CN115537964B (en) * | 2022-11-09 | 2023-09-15 | 福建师范大学泉港石化研究院 | Modified tourmaline polylactic acid melt-blown material and preparation method and application thereof |
| CN115726098A (en) * | 2022-12-20 | 2023-03-03 | 江苏美韦纶新材料科技有限公司 | Novel polylactic acid biodegradable melt-blown fabric and processing method thereof |
| CN116211000B (en) * | 2022-12-30 | 2023-10-03 | 青岛周氏塑料包装有限公司 | Fully-degradable mask and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101735583A (en) * | 2009-12-15 | 2010-06-16 | 中国科学院长春应用化学研究所 | Completely biodegraded polylactic acid nanometer composite material and preparation method thereof |
| CN101851830A (en) * | 2010-05-05 | 2010-10-06 | 豆丁乐园（南京）婴儿用品有限公司 | Fully-degradable polylactic acid fiber SMS compound non-woven and manufacturing method thereof |
| KR20120059779A (en) * | 2010-12-01 | 2012-06-11 | 도레이첨단소재 주식회사 | Mutilayer spunbond nonwoven fabric including meltblown polylactic acid and preparing method thereof |
| CN112493581A (en) * | 2020-10-28 | 2021-03-16 | 濮阳玉润新材料有限公司 | Polylactic acid material biodegradable environment-friendly functional protective mask |
-
2021
- 2021-03-30 CN CN202110343325.XA patent/CN113068882B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101735583A (en) * | 2009-12-15 | 2010-06-16 | 中国科学院长春应用化学研究所 | Completely biodegraded polylactic acid nanometer composite material and preparation method thereof |
| CN101851830A (en) * | 2010-05-05 | 2010-10-06 | 豆丁乐园（南京）婴儿用品有限公司 | Fully-degradable polylactic acid fiber SMS compound non-woven and manufacturing method thereof |
| KR20120059779A (en) * | 2010-12-01 | 2012-06-11 | 도레이첨단소재 주식회사 | Mutilayer spunbond nonwoven fabric including meltblown polylactic acid and preparing method thereof |
| CN112493581A (en) * | 2020-10-28 | 2021-03-16 | 濮阳玉润新材料有限公司 | Polylactic acid material biodegradable environment-friendly functional protective mask |
Non-Patent Citations (1)
| Title |
|---|
| 扩链剂KL-E4370对PLA/PBAT复合材料结构与性能的影响;王冬 等;《塑料科技》;第46卷(第5期);103-106 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113068882A (en) | 2021-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113068882B (en) | Fully degradable mask and manufacturing method thereof | |
| CN110273299B (en) | Polyvinyl alcohol non-woven fabric and preparation method thereof | |
| CN103215752B (en) | A kind of long-acting anti-demodicid mite, mildew-resistant, antibacterial PP non-woven fabrics and preparation method thereof | |
| CN111548566B (en) | Melt-blown polypropylene material and preparation method and application thereof | |
| CN106948088A (en) | A kind of non-woven fabrics preparation method led surely | |
| CN107447362A (en) | A kind of flame-proof environmental protection antimycotic antiseptic nonwoven cloth material and preparation method thereof | |
| CN113279144A (en) | Environment-friendly degradable non-woven fabric and preparation method thereof | |
| CN113106631B (en) | Waterproof and oilproof elastic soft non-woven fabric and manufacturing process thereof | |
| CN112981701A (en) | Multilayer melt-blown non-woven fabric and preparation method thereof | |
| CN101787620B (en) | High temperature resistant melt-blown non-woven material and preparation method thereof | |
| WO2023015745A1 (en) | Non-woven fabric convenient for direct molding and processing, and production method therefor and use thereof | |
| CN113261723B (en) | Degradable mask and preparation method thereof | |
| CN105586719B (en) | A kind of softness high-tenacity terylene SMS composite nonwoven material and preparation method thereof | |
| CN113293512A (en) | Antibacterial skin-friendly non-woven fabric and preparation method thereof | |
| CN106917192B (en) | Preparation method of flame-retardant non-woven fabric | |
| JP4834688B2 (en) | Polypropylene fiber with excellent heat resistance | |
| KR101273898B1 (en) | Manufacturing method of Meta Aramid nonwoven fabric and Meta Aramid nonwoven fabric manufactured thereby | |
| JP2009138022A (en) | Thermoplastic composite material composition | |
| CN110820340A (en) | Preparation method of polyvinyl alcohol fiber composite modified material for machine-made products | |
| CN110965209A (en) | Production process of colored polyester filament non-woven fabric | |
| JPWO2020075870A1 (en) | Non-woven laminates, stretchable non-woven laminates, textile products, absorbent articles and sanitary masks | |
| CN115387023A (en) | Preparation method of TPU/PLA melt-blown composite non-woven fabric | |
| KR102418918B1 (en) | Biodegradable nonwoven fabric improved in flexibility and softness, preparation thereof and biodegradable mask using the same | |
| CN105297284A (en) | Manufacturing method of non-woven needle-punched jacquard pad | |
| JP5116984B2 (en) | Nonwoven fabric and method for producing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |