CN115568651A - High, degradable environmental protection gauze mask of entrapment rate - Google Patents
High, degradable environmental protection gauze mask of entrapment rate Download PDFInfo
- Publication number
- CN115568651A CN115568651A CN202111577573.7A CN202111577573A CN115568651A CN 115568651 A CN115568651 A CN 115568651A CN 202111577573 A CN202111577573 A CN 202111577573A CN 115568651 A CN115568651 A CN 115568651A
- Authority
- CN
- China
- Prior art keywords
- mask
- melt
- layer
- degradable
- blown
- 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.)
- Pending
Links
- 230000007613 environmental effect Effects 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 44
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 42
- 239000004626 polylactic acid Substances 0.000 claims abstract description 41
- 239000004744 fabric Substances 0.000 claims abstract description 37
- 229920001910 maleic anhydride grafted polyolefin Polymers 0.000 claims abstract description 12
- 239000004743 Polypropylene Substances 0.000 claims abstract description 11
- -1 polypropylene Polymers 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 10
- 229920001155 polypropylene Polymers 0.000 claims abstract description 8
- 230000014759 maintenance of location Effects 0.000 claims abstract description 4
- 239000004952 Polyamide Substances 0.000 claims abstract description 3
- 229920002647 polyamide Polymers 0.000 claims abstract description 3
- 229920002635 polyurethane Polymers 0.000 claims abstract description 3
- 239000004814 polyurethane Substances 0.000 claims abstract description 3
- 230000002378 acidificating effect Effects 0.000 claims description 7
- 239000012745 toughening agent Substances 0.000 claims description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 6
- 229920000098 polyolefin Polymers 0.000 claims description 6
- 239000011975 tartaric acid Substances 0.000 claims description 6
- 235000002906 tartaric acid Nutrition 0.000 claims description 6
- 229920001112 grafted polyolefin Polymers 0.000 claims description 4
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 claims description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 2
- 229920002943 EPDM rubber Polymers 0.000 claims description 2
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 0.000 claims description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 2
- 235000011054 acetic acid Nutrition 0.000 claims description 2
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 2
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 claims description 2
- 235000015165 citric acid Nutrition 0.000 claims description 2
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 claims description 2
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims description 2
- 239000001630 malic acid Substances 0.000 claims description 2
- 235000011090 malic acid Nutrition 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 2
- 229920001896 polybutyrate Polymers 0.000 claims description 2
- 229920001610 polycaprolactone Polymers 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 claims description 2
- 229920000331 Polyhydroxybutyrate Polymers 0.000 claims 1
- 239000005015 poly(hydroxybutyrate) Substances 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 11
- 241000894006 Bacteria Species 0.000 abstract description 3
- 238000003860 storage Methods 0.000 abstract description 3
- 241000700605 Viruses Species 0.000 abstract description 2
- 239000000428 dust Substances 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 239000000203 mixture Substances 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 12
- 238000005507 spraying Methods 0.000 description 12
- 238000003466 welding Methods 0.000 description 12
- 239000002994 raw material Substances 0.000 description 10
- 239000004594 Masterbatch (MB) Substances 0.000 description 8
- 230000007062 hydrolysis Effects 0.000 description 7
- 238000006460 hydrolysis reaction Methods 0.000 description 7
- 238000007599 discharging Methods 0.000 description 6
- 239000012153 distilled water Substances 0.000 description 6
- 230000005611 electricity Effects 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 238000005086 pumping Methods 0.000 description 6
- 230000003068 static effect Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 5
- 239000002028 Biomass Substances 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- 230000029553 photosynthesis Effects 0.000 description 3
- 238000010672 photosynthesis Methods 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 2
- 101100269850 Caenorhabditis elegans mask-1 gene Proteins 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000009881 electrostatic interaction Effects 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000004287 Dehydroacetic acid Substances 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- 235000003434 Sesamum indicum Nutrition 0.000 description 1
- 244000000231 Sesamum indicum Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000008104 plant cellulose Substances 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002959 polymer blend Polymers 0.000 description 1
- 229920005594 polymer fiber Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000001179 sorption measurement Methods 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
- A41D27/00—Details of garments or of their making
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention relates to A41D13, in particular to a degradable environment-friendly mask with high retention rate. The environment-friendly mask comprises a mask body and an ear belt; the cover body comprises a first spunbond layer, a melt-blown layer and a second spunbond layer; the first spunbond layer, the melt-blown layer and the second spunbond layer are sequentially stacked from top to bottom, and the melt-blown layer is made of one or more materials selected from polypropylene melt-blown cloth, polyurethane melt-blown cloth, polylactic acid melt-blown cloth and polyamide melt-blown cloth. The maleic anhydride grafted polyolefin with a specific proportion is added into the material, so that the tensile property of the material can be improved, the storage time of the material at normal temperature can be prolonged while the material property is maintained, and the high-temperature stability of the material is improved to a certain extent. The mask obtained by the invention not only has excellent filtering performance on dust, but also can effectively isolate substances such as bacteria, viruses and the like, and in addition, the mask has good transverse tensile property, adopts safe and degradable materials, and meets the requirements of environmental protection.
Description
Technical Field
The invention relates to A41D13, in particular to a degradable environment-friendly mask with high retention rate.
Background
In recent years, as society develops, various plastic products are increasing. The material of the mask is generally non-woven fabric, besides non-woven fabric, the material also comprises activated carbon and other materials, and the synthetic components mainly comprise polypropylene and polyethylene. Although these plastic products are cheap and convenient to use, these traditional types of plastics not only consume a large amount of fossil resources in the manufacturing and using processes, but also have great degradation difficulty.
PLA, also called polylactide, is a new polymeric material that is fully biodegradable. The polyester material is prepared by lactic acid polycondensation, most of which takes plant biomass or plant cellulose as raw materials, and forms renewable resources through photosynthesis of plants. After being discarded, the polylactic acid product can be decomposed by microorganisms to be converted into water and carbon dioxide, and then biomass is formed through photosynthesis of plants for utilization, so that the polylactic acid is an environment-friendly material which is generally recognized at present.
Patent No. CN112493581A provides a biodegradable environment-friendly functional protective mask made of polylactic acid material. The melt-blown cloth filter layer is made of 100% polylactic acid melt-blown cloth, and the problems that chemical fiber non-woven fabrics and PP melt-blown cloth are used in a traditional mask, air permeability is poor, and sensitization is generated on skin are solved. But the use of polylactic acid also makes the thermal stability, mechanical properties, etc. of the material challenging.
Disclosure of Invention
In order to solve the above problems, a first aspect of the present invention provides a degradable environmental protection mask with high rejection rate, the environmental protection mask comprising a mask body and an ear band; the mask body comprises a first spunbond layer, a melt-blown layer and a second spunbond layer; the first spunbond layer, the melt-blown layer and the second spunbond layer are sequentially stacked from top to bottom.
The cover body is fixedly connected with the ear belt.
In a preferred embodiment of the present invention, the material of the meltblown layer is selected from one or more of polypropylene meltblown, polyurethane meltblown, polylactic acid meltblown and polyamide meltblown.
Polylactic acid melt-blown fabric
The polylactic acid melt-blown fabric is not made of petroleum, but is derived from natural plant components. The biomass can be decomposed into water and carbon dioxide by microorganisms in the nature, and then new biomass is regenerated through photosynthesis of plants, so that the raw materials can be recycled and degraded, and the sustainable development concept is met. The polylactic acid melt-blown fabric has good weather resistance at normal temperature, and has the advantages of fine fiber, more pores and small size due to the melt-blowing technology, and has outstanding advantages in the aspects of filtration, bacteria resistance, adsorption and the like.
As a preferable technical scheme, the raw materials of the polylactic acid melt-blown fabric comprise a polylactic acid base material, an acidic substance, a toughening agent and a compatibilizer.
As a preferred technical scheme of the invention, the processing temperature of the polylactic acid base material is 170-230 ℃, and the melt flow rate at 210 ℃ is 2-26g/10min.
Melt Flow Rate (MFR), also known as Melt Index (MI), is the measure of the grams of molten material flowing through a standard capillary in g/10min over a period of time (typically 10 min) under a specified pressure and temperature environment using a standardized melt index apparatus. Melt flow rate is an important reference for industrial material selection.
In a preferred embodiment of the present invention, the acidic substance is selected from one or more of tartaric acid, malic acid, succinic acid, citric acid, and acetic acid.
As a preferred technical scheme of the invention, the toughening agent is selected from one or more of erucamide, polyhydroxy butyric acid based polymer, acrylate copolymer, PBAT and PCL.
As a preferred technical scheme of the invention, the compatibilizer is selected from one or more of maleic anhydride hydrogenated styrene grafted polyolefin, maleic anhydride grafted polyolefin and glycidyl methacrylate grafted polyolefin.
Maleic anhydride grafted polyolefins
Maleic anhydride grafted polyolefins are important functionalized polyolefins and have wide applications in polymer blends, polymer-fibers and composites. However, the development is relatively slow because of the poor impact state, high water absorption and poor notched impact strength in the dry state and at low temperatures.
As a preferred technical solution of the present invention, the polyolefin is selected from one or more of PE, PP, POE, EVA, EPDM, and SEBS.
Generally speaking, the addition of anhydride modified polyolefin to a material can improve the tensile property of the material, and the applicant has found unexpectedly in experiments that the addition of maleic anhydride grafted polyolefin in a specific ratio to the material can not only improve the tensile property of the material, but also prolong the storage time of the material at normal temperature while maintaining the material property and improve the high temperature stability of the material to some extent. The applicant conjectures that the components in the polylactic acid melt-blown fabric system provided by the invention act synergistically, the linear structure of the polyolefin can serve as a nucleating agent to influence the crystallization of the polylactic acid, meanwhile, the acidic substance has more active positive parts, double bonds in the polyolefin have higher electron cloud density, and partial electron transfer and electrostatic interaction can occur among the components, so that the bonding force among the components is increased under the action of the electrostatic interaction, and the stability of the system is increased. Such a polylactic acid meltblown system is excellent in performance particularly in a mask.
Preferably, in the polylactic acid melt-blown fabric, by weight, 50-60 parts of a polylactic acid matrix, 0.9-1.5 parts of an acidic substance, 0.1-0.6 part of a compatibilizer and 30-44 parts of a toughening agent are included.
As a preferable technical solution of the present invention, the first spunbond layer and the second spunbond layer are made of polypropylene.
The method of the mask comprises:
the method comprises the following steps: (1) Pumping 40-70 parts of distilled water into a reaction kettle, setting the temperature at 65-85 ℃, adding a polylactic acid base material, an acidic substance, a toughening agent and a compatibilizer after the water temperature reaches the set temperature, reacting for 5-20 hours, stopping the reaction after the target melt index reaches 150-800g/10min (190 ℃), and discharging to obtain a mixture A; (2) Mixing the mixture A, the electret master batch and the hydrolysis-resistant master batch, spraying cloth, and performing static electricity application, wherein the cloth spraying temperature is controlled to be 160-230 ℃, so that polylactic acid melt-sprayed cloth is obtained; (3) And connecting the first spunbond layer, the melt-blown layer, the second spunbond layer and the ear strap through spot welding by a spot welding machine.
The second aspect of the invention provides application of a degradable environment-friendly mask with high rejection rate, and the environment-friendly mask is applied to the field of medical instruments.
Compared with the prior art, the invention has the following beneficial effects:
(1) The maleic anhydride grafted polyolefin with a specific proportion is added into the material, so that the tensile property of the material can be improved, the storage time of the material at normal temperature can be prolonged while the material property is maintained, and the high-temperature stability of the material is improved to a certain extent.
(2) The filtering effect of the mask is obviously improved by adding the specific polylactic acid base material, and good air permeability is ensured.
(3) The longitudinal stretching capacity of the mask is improved through the toughening agent, the aperture is increased while the aperture size of the mask fiber is kept, and the light and thin mask is guaranteed.
(4) The mask provided by the invention has good transverse tensile property, adopts safe degradable materials, and meets the requirements of environmental protection.
(5) The mask obtained by the invention not only has excellent filtering performance on dust, but also can effectively isolate substances such as bacteria, viruses and the like.
Detailed Description
Examples
The compositions of the examples were prepared from commercially available materials, wherein the polylactic acid base was obtained from darco benne, thailand, model number L130, maleic anhydride grafted polyolefin was obtained from dupont, usa, and model number E265, polypropylene was obtained from nibofude energy limited, and model number mesopetrochemical H40S, the acrylate copolymer was obtained from krama, model number 1227188484, electret masterbatch was obtained from pliwan, model number CC10322458BG, and the hydrolysis resistant masterbatch was obtained from shanxi chemical assistant limited, and model number PH7701.
Examples1
The embodiment provides a degradable environment-friendly mask with high retention rate, which comprises a mask body and an ear band; the cover body comprises a first spunbond layer, a melt-blown layer and a second spunbond layer; the first spunbond layer, the meltblown layer and the second spunbond layer are sequentially laminated from top to bottom. The cover body is fixedly connected with the ear belt. The first spunbond layer and the second spunbond layer are made of polypropylene. The material of the melt-blown layer is polylactic acid melt-blown cloth. The polylactic acid melt-blown fabric comprises, by weight, 55 parts of a polylactic acid base material, 1.3 parts of tartaric acid, 40 parts of an acrylate copolymer and 0.5 part of maleic anhydride grafted polyolefin.
The method of the mask comprises:
the method comprises the following steps: (1) Pumping 60 parts of distilled water into a reaction kettle, setting the temperature at 70 ℃, adding the raw materials after the water temperature reaches the set temperature, reacting for 12 hours, stopping the reaction after the target melt index is reached to 200g/10min (190 ℃), and discharging to obtain a mixture A; (2) Mixing the mixture A, the electret master batches and the hydrolysis-resistant master batches, spraying cloth, and performing static electricity application, wherein the cloth spraying temperature is controlled at 200 ℃ to obtain polylactic acid melt-sprayed cloth; (3) And connecting the first spunbond layer, the melt-blown layer, the second spunbond layer and the ear band by spot welding through a spot welding machine.
Examples2
The present example provides a degradable mask with high rejection rate, which is different from example 1 in that the polylactic acid meltblown fabric comprises 60 parts by weight of polylactic acid base material, 1.5 parts by weight of tartaric acid, 44 parts by weight of acrylate copolymer, and 0.5 part by weight of maleic anhydride grafted polyolefin.
The method of the mask comprises:
the method comprises the following steps: (1) Pumping 60 parts of distilled water into a reaction kettle, setting the temperature at 70 ℃, adding the raw materials after the water temperature reaches the set temperature, reacting for 12 hours, stopping the reaction after the target melt index is reached to 200g/10min (190 ℃), and discharging to obtain a mixture A; (2) Mixing the mixture A, the electret master batch and the hydrolysis-resistant master batch, spraying cloth, applying static electricity, and controlling the cloth spraying temperature to be 200 ℃ to obtain polylactic acid melt-sprayed cloth; (3) And connecting the first spunbond layer, the melt-blown layer, the second spunbond layer and the ear band by spot welding through a spot welding machine.
Examples3
The present example provides a degradable mask with high rejection rate, which is different from example 1 in that the raw materials of the polylactic acid melt-blown fabric comprise, by weight, 52 parts of polylactic acid base material, 1.0 part of tartaric acid, 34 parts of acrylate copolymer, and 0.2 part of maleic anhydride grafted polyolefin.
The method of the mask comprises:
the method comprises the following steps: (1) Pumping 60 parts of distilled water into a reaction kettle, setting the temperature at 70 ℃, adding the raw materials after the water temperature reaches the set temperature, reacting for 12 hours, stopping the reaction after the target melt index is reached to 200g/10min (190 ℃), and discharging to obtain a mixture A; (2) Mixing the mixture A, the electret master batches and the hydrolysis-resistant master batches, spraying cloth, and performing static electricity application, wherein the cloth spraying temperature is controlled at 200 ℃ to obtain polylactic acid melt-sprayed cloth; (3) And connecting the first spunbond layer, the melt-blown layer, the second spunbond layer and the ear band by spot welding through a spot welding machine.
Examples4
This example provides a degradable mask with high rejection rate, which is different from example 1 in that maleic anhydride grafted polyolefin is not added to the raw material of the polylactic acid meltblown.
The method of the mask comprises:
the method comprises the following steps: (1) Pumping 60 parts of distilled water into a reaction kettle, setting the temperature at 70 ℃, adding the raw materials after the water temperature reaches the set temperature, reacting for 12 hours, stopping the reaction after the target melt index is reached to 200g/10min (190 ℃), and discharging to obtain a mixture A; (2) Mixing the mixture A, the electret master batch and the hydrolysis-resistant master batch, spraying cloth, applying static electricity, and controlling the cloth spraying temperature to be 200 ℃ to obtain polylactic acid melt-sprayed cloth; (3) And connecting the first spunbond layer, the melt-blown layer, the second spunbond layer and the ear band by spot welding through a spot welding machine.
Examples5
The present example provides a degradable mask with high rejection rate, which is different from example 1 in that tartaric acid is not added to the polylactic acid melt-blown fabric.
The method of the mask comprises:
the method comprises the following steps: (1) Pumping 60 parts of distilled water into a reaction kettle, setting the temperature at 70 ℃, adding the raw materials after the water temperature reaches the set temperature, reacting for 12 hours, stopping the reaction after the target melt index is reached to 200g/10min (190 ℃), and discharging to obtain a mixture A; (2) Mixing the mixture A, the electret master batches and the hydrolysis-resistant master batches, spraying cloth, and performing static electricity application, wherein the cloth spraying temperature is controlled at 200 ℃ to obtain polylactic acid melt-sprayed cloth; (3) And connecting the first spunbond layer, the melt-blown layer, the second spunbond layer and the ear strap through spot welding by a spot welding machine.
And (4) performance testing:
1. testing the filtering efficiency of the mask: the environmental protection masks obtained in examples 1 to 5 were subjected to mask filtration efficiency test according to the GB/T6166-1985 high efficiency filter material performance test method, and the results are shown in Table 1:
TABLE 1
| Examples | Filtration efficiency of mask |
| 1 | 99％ |
| 2 | 99％ |
| 3 | 99％ |
| 4 | 98％ |
| 5 | 98％ |
2. And (3) testing the degradation rate: the environmental protection masks obtained in examples 1 to 5 were buried in soil, and the mass loss rate after 1 month was measured, and the results are shown in table 2:
TABLE 2
| Examples | Rate of degradation |
| 1 | 87％ |
| 2 | 84％ |
| 3 | 84％ |
| 4 | 79％ |
| 5 | 79％ |
3. And (3) testing the high-temperature stability: after the environment-friendly mask obtained in the embodiments 1 to 5 is placed at 35 ℃ for 72 hours, the mask filtration efficiency test is carried out according to the GB/T6166-1985 high-efficiency filter material performance test method, and the results are shown in the following table 3:
TABLE 3
| Examples | Filtration efficiency of mask |
| 1 | 98％ |
| 2 | 98％ |
| 3 | 98％ |
| 4 | 95％ |
| 5 | 95％ |
It can be known that the mask of the environment-friendly mask obtained in the embodiments 1 to 3 has high filtering efficiency and good degradation rate, and the mask still maintains high filtering efficiency after being placed at 35 ℃ for 72 hours.
Claims (10)
1. The degradable environment-friendly mask with high retention rate is characterized by comprising a mask body and ear belts; the mask body comprises a first spunbond layer, a melt-blown layer and a second spunbond layer; the first spunbond layer, the meltblown layer and the second spunbond layer are sequentially laminated from top to bottom.
2. The degradable environmental protection mask according to claim 1, wherein the material of said meltblown layer is selected from one or more of polypropylene meltblown, polyurethane meltblown, polylactic acid meltblown and polyamide meltblown.
3. The degradable environment-friendly mask with high rejection rate according to claim 2, wherein the polylactic acid melt-blown fabric comprises polylactic acid base material, acidic material, toughening agent and compatibilizer.
4. The degradable mask of claim 3 wherein the polylactic acid base material has a processing temperature of 170-230 ℃ and a melt flow rate of 2-26g/10min at 210 ℃.
5. The degradable mask of claim 3 wherein the acidic substance is selected from one or more of tartaric acid, malic acid, succinic acid, citric acid and acetic acid.
6. The high-rejection, degradable environmental protection mask according to claim 3, wherein said toughening agent is selected from one or more of erucamide, polyhydroxybutyrate-based polymer, acrylate copolymer, PBAT, PCL.
7. The degradable environmental protection mask according to claim 3, wherein said compatibilizer is one or more selected from the group consisting of maleic anhydride hydrogenated styrene grafted polyolefin, maleic anhydride grafted polyolefin, and glycidyl methacrylate grafted polyolefin.
8. The high rejection, degradable environmental protection mask according to claim 7, wherein said polyolefin is selected from one or more of PE, PP, POE, EVA, EPDM, SEBS.
9. The degradable mask according to any one of claims 1 to 8, wherein the first spun-bonded layer and the second spun-bonded layer are made of polypropylene.
10. The use of the degradable environmental mask according to claim 1, wherein the mask is used in the field of medical devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111577573.7A CN115568651A (en) | 2021-12-22 | 2021-12-22 | High, degradable environmental protection gauze mask of entrapment rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111577573.7A CN115568651A (en) | 2021-12-22 | 2021-12-22 | High, degradable environmental protection gauze mask of entrapment rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115568651A true CN115568651A (en) | 2023-01-06 |
Family
ID=84578539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111577573.7A Pending CN115568651A (en) | 2021-12-22 | 2021-12-22 | High, degradable environmental protection gauze mask of entrapment rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115568651A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115467041A (en) * | 2021-11-30 | 2022-12-13 | 上海涵点科技有限公司 | Polylactic acid melt-blown fabric with good filterability and shielding property and application thereof |
-
2021
- 2021-12-22 CN CN202111577573.7A patent/CN115568651A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115467041A (en) * | 2021-11-30 | 2022-12-13 | 上海涵点科技有限公司 | Polylactic acid melt-blown fabric with good filterability and shielding property and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105358107A (en) | Absorbent article containing a nonwoven web formed from porous polyolefin fibers | |
| CN110592808B (en) | Alga modified PP spunbonded non-woven fabric | |
| CN115568651A (en) | High, degradable environmental protection gauze mask of entrapment rate | |
| CN111808334B (en) | Processing technology of biomass-based composite material for non-woven fabric with high degradability | |
| TW200420767A (en) | Polypropylene fibres suitable for spunbonded non-woven fabrics | |
| CN110644135A (en) | Antibacterial composite flocculus and preparation method thereof | |
| EP2010387A2 (en) | Composite element made from polyurethane and polyolefin | |
| JP4821202B2 (en) | Method for producing biodegradable spunbond nonwoven fabric | |
| CN112956764A (en) | Biodegradable mask and preparation method thereof | |
| CN114875518A (en) | Antibacterial ES fiber for cool non-woven fabric and preparation method thereof | |
| CN109705324A (en) | A kind of preparation method of crystal type low-melting point PET and the method for preparing high-elasticity fiber | |
| JP5051544B2 (en) | Amino group-containing fiber, method for producing the same, and fiber structure containing the fiber | |
| CN114606645A (en) | Composite melt-blown fabric and preparation process thereof | |
| JP2023147247A (en) | Melt-blown nonwoven fabric and hygienic material | |
| JP2652319B2 (en) | Biodegradable disposable diapers | |
| CN108130652A (en) | A kind of polylactic acid non-woven fabrics and preparation method and application | |
| CN112757741A (en) | Functional film for stopping ammonia gas dissipation in composting process and preparation method thereof | |
| CN114575039A (en) | Non-rebound needle-punched non-woven fabric and preparation method thereof | |
| CN109576991B (en) | Preparation method of antibacterial composite fiber, antibacterial fabric and application | |
| JP4807012B2 (en) | Biodegradable nonwoven fabric with excellent hydrolysis resistance | |
| CN113576768B (en) | Degradable baby diaper | |
| Aziz et al. | Evaluation of wetting, structural and thermal properties of electrospun nanofibers at different pineapple leaf fiber/polyethylene terephthalate ratios | |
| CN115819834B (en) | Water collecting assembly, preparation method thereof and water collecting device | |
| CN215875243U (en) | Biodegradable sanitary nursing article | |
| CN211836907U (en) | Degradable filter cotton for air purification |
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 | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240430 Address after: 201500 1st floor, building 2, 16387 Puwei Road, Shanyang Town, Jinshan District, Shanghai Applicant after: Shanghai Handian New Materials Co.,Ltd. Country or region after: China Address before: 201500 Block W, Room 101, Block A, Second Floor, Building 4, No. 688, Qiushi Road, Jinshanwei Town, Jinshan District, Shanghai Applicant before: Shanghai Jingyan New Materials Co.,Ltd. Country or region before: China |