CN105962481A - Konjac glucomannan membrane haze-prevention mask - Google Patents
Konjac glucomannan membrane haze-prevention mask Download PDFInfo
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- CN105962481A CN105962481A CN201610361182.4A CN201610361182A CN105962481A CN 105962481 A CN105962481 A CN 105962481A CN 201610361182 A CN201610361182 A CN 201610361182A CN 105962481 A CN105962481 A CN 105962481A
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- glucomannan
- rhizoma amorphophalli
- konjac glucomannan
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/26—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D2400/00—Functions or special features of garments
- A41D2400/32—Therapeutic use
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2305/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2301/00 or C08J2303/00
- C08J2305/02—Dextran; Derivatives thereof
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Textile Engineering (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Laminated Bodies (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention relates to a konjac glucomannan membrane haze-prevention mask. A mask body of the konjac glucomannan membrane haze-prevention mask is composed of four layers which specifically include the first layer, namely, the outmost layer, made of non-woven fabric, the second layer made of a konjac glucomannan porous membrane, the third layer made of a konjac glucomannan nanometer porous membrane, and the fourth layer, namely, the layer in contact with the face, made of non-woven fabric. With natural polymer polysaccharide, namely, konjac glucomannan, serving as the main ingredient, the konjac glucomannan membrane haze-prevention mask has various characteristics of hydrophilia, the thickening characteristic, stability and the like. In recent years, natural polymer compounds are widely applied to the material field, and many problem emerging on material safety are solved. The technology of preparing high-quality nanometer porous membranes with plant polysaccharide serving as the raw materials become a hot point in recent years; according to the method, the special gel property of konjac glucomannan is utilized, and the konjac glucomannan nanometer porous membrane is obtained through application of the electric field technology, and has great application potential in the material field. The konjac glucomannan membrane haze-prevention mask has higher indexes such adsorption performance, safety, raw material price and potential markets than those of other masks on the market, and can be selected by mass consumers as high-quality haze-prevention masks.
Description
Technical field
The present invention relates to a kind of respiratory system protection instrument, be specifically related to a kind of konjac glncomanan film haze mask,
Belong to hygiene article sector.
Background technology
Haze is molecular by grains such as the dust in air, sulphuric acid, nitric acid, organic hydrocarbon compounds, especially PM2.5
(the equivalent aerodynamic diameter particulate matter less than or equal to 2.5 microns) is considered as " arch-criminal " causing haze weather.The U.S.
Environmental Protection Administration issues " about air particle interdisciplinary science assessment report " for 2009 and points out have enough scientific research results to prove
Fine Particles can adsorb carcinogen and genotoxicity mutagen matter in a large number, brings very important negative to health
Face rings, including improving mortality rate, making chronic disease aggravation, make respiratory system and cardiac system disease progression, change pulmonary function and
Structure, affect reproductive performance, change human body immune structure etc..
At present, mask on the market, as a kind of hygienic article, refers generally to be worn over nose and mouth for filtering entrance mouth and nose
Air, with reach the gas of blocking harmful, abnormal smells from the patient, the spittle turnover wearer's mouth and nose apparatus, make with gauze or paper etc..General
Logical mask has certain filtration to the air entering pulmonary, when respiratory infectious disease is popular, pollutes at dust etc.
In environment during operation, wear masks and there is extraordinary effect.But, for the PM2.5 in haze, general mask does not protect effect
Really.And some recently occurred also have the shortcomings such as weak effect, complex process, material expensive for the mask of haze.
The patent of invention " a kind of anti-smelting haze and the mask of pharyngolaryngitis " of Application No. 201410428868.1 (applying date:
2014.08.28) it is prepared for a kind of multilamellar haze based on medicated core and the mask of pharyngolaryngitis, the filter efficiency of its filter disc,
The aspect such as breathability, antibiotic property is outstanding.But medicated core fill the medicine having related to tens of kinds during dixie cup with
And different proportionings, manufacture method is relatively complicated, and the requirement to raw material is higher.
The patent of Application No. 201320768829.7 " anti-can enter the disposable antibacterial mask of lung particulate matter " (applying date:
2013.11.29) describing one to prevent entering the disposable antibacterial mask of lung particulate matter, the material on top layer is acrylic resin nonwoven
Cloth or textile absorbent carbasus, the material of patch skin layers is textile absorbent carbasus, and filter course is that breathable plastic alloy firm is made.This mouth
Cover has that intensity is high, filterability is good, the reliable advantage of sterilization ability, but relates to some plastic polymers in material, exists
Potential safety issue.
The patent of invention " haze muzzle cover " (applying date: 2014.01.28) of Application No. 201410041594.0 is introduced
A kind of made haze muzzle cover by any one material in nucleopore membranes, cellulose membrane, poly tetrafluoroethylene or polysulfone membrane,
Aperture can effectively have lightweight more than or equal to the pellet of 2.5 microns or respirable suspended particulate by filter diameter,
The advantages such as volume is little, and processing preparation is simple, but for the aperture granular absorption poor effect less than 2.5 microns, in addition to from
The inhalable particles that oral cavity enters does not has any preventing to act on.
Being found that while of nano-porous films has gone up the history of a century away from the present, but its unlimited potentiality and using value are but
Constantly excavated by the mankind.Its distinctive loose structure result in the high specific surface area and porosity of film and extremely low
Density, and various space three-dimensional network structure.Such structure imparts the distinctive heat-proof quality of nano-porous films, surface
Interfacial effect and doping absorption property.Occur in early days utilizes the nano-porous films obtained by silicon dioxide and the carbon occurred afterwards
The high-performance fiber film that nanofiber prepares broadly falls into inoranic membrane.Afterwards, the polymeric material based on petroleum is by extensively
Application.But owing to the safety issue of these materials highlights day by day, it is many that natural macromolecular material starts to be used to make nanometer
Pore membrane is applied to every field, and they are showing more excellent material property simultaneously, also solve many material safeties
Produced problem in property.
Summary of the invention
It is an object of the invention to provide the konjac glncomanan film haze mask that a kind of and existing mask is different.
The present invention, with konjac glncomanan film and non-woven fabrics as main component, utilizes the high specific surface area of film and hole
Rate, extremely low density and aperture, and the safety of Rhizoma amorphophalli glucomannan pure natural, prepare excellent adsorption, safety height, technique
Simple haze mask.
The konjac glncomanan film haze mask of the present invention, it is characterised in that cover body totally four layers, specific as follows:
(1) ground floor, i.e. outermost layer are non-woven fabrics；
(2) second layer is Rhizoma amorphophalli glucomannan perforated membrane；
(3) third layer is Rhizoma amorphophalli glucomannan nano-porous films；
(4) the 4th layers, be i.e. non-woven fabrics with facial contact layer.
The preparation method of konjac glncomanan film haze mask of the present invention, it is characterised in that preparation process is as follows:
(1) Rhizoma amorphophalli glucomannan perforated membrane is prepared: take konjak glucomannan fine powder 1～2g, ultra-pure water 98～99g, constant temperature homogenizing
Importing after swelling in the flat board identical with mask cross-sectional sizes ,-18 DEG C of pretreatment 8h, then-50 DEG C, 10Pa vacuum freezing is done
Dry, make Rhizoma amorphophalli glucomannan perforated membrane；Described constant temperature homogenizing is swelling: konjak portuguese gansu polyose sugar juice is placed in 40 DEG C of waters bath with thermostatic control
In Guo, magnetic stirring apparatus 350rpm stirs 60min；
(2) Rhizoma amorphophalli glucomannan nano-porous films is prepared: Rhizoma amorphophalli glucomannan nano-porous films is filter course, takes konjak portuguese gansu polyose
Glucide powder 1～2g, ultra-pure water 98～99g, after constant temperature homogenizing is swelling, use high voltage electric field to prepare nanometer coating materials, then ,-18 DEG C
Pretreatment 8h ,-50 DEG C, 10Pa vacuum lyophilization, make Rhizoma amorphophalli glucomannan nano-porous films；The preparation of described high voltage electric field is received
Rice coating materials: the konjak portuguese gansu polyose sugar juice after swelling for constant temperature homogenizing is loaded in the 10mL syringe that syringe needle internal diameter is 0.6mm,
Being then placed in high voltage electric field equipment, the operational factor arranging high voltage electric field equipment is: 40 ± 3 DEG C, relative humidity 30%；Spinning
Distance 13cm, spinning voltage is 30kV, and spinning flow velocity is 2.4ml/h, and the spinning time is 10mins；
(3) selection: totally four layers of konjac glncomanan film haze mask, the outermost layer of ground floor and the 4th layer, i.e. mask and with
Facial contact layer, selects 20～30g/m2Non-woven fabrics；The second layer is Rhizoma amorphophalli glucomannan perforated membrane；Third layer is Amorphophallus rivieri glucomannan
Polysaccharide nano-porous films；
(4) mask is prepared: take the material described in step (1)～(3), stack in order, and cut out by the specification of mask, make
Mask.
The present invention is with natural macromolecule amylose Rhizoma amorphophalli glucomannan as main component, and Rhizoma amorphophalli glucomannan (KGM) is
The linear polymer connected with β-Isosorbide-5-Nitrae glycosidic bond by mannose and glucose, on some sugar side chains of its molecule,
Connection has the molecular proportion of acetyl group, glucose and mannose to be 1:(1.5 ~ 1.7), molecular weight may be up to 106, and viscosity is high, molten
Yu Shui, in water, swelling degree is big, has specific biological activity.KGM has the multifrequency natures such as hydrophilic, thickening property, stability.
In recent years, natural polymer is widely used in Material Field, the waste recovery profit being on the one hand used in production
With, decrease the pollution of environment；On the other hand natural polymer shows more excellent material property, meanwhile, also
Solve produced problem on many material safety.High quality nano perforated membrane is prepared for raw material with natural vegetable polysaccharides
For focus in recent years, the present invention utilizes the distinctive gel characteristic of Rhizoma amorphophalli glucomannan, by the application of electric field technology, it is thus achieved that
Rhizoma amorphophalli glucomannan nano-porous films, has the biggest application potential at Material Field.
The konjac glncomanan film mask of table 1 present invention with on the market have mask correlated performance test comparison result
Through above-mentioned test comparison, the konjac glncomanan film haze mask of the present invention, at absorption property, safety, raw material
In the index such as price and potential market, other masks are more excellent the most on the market, can become the high-quality haze that consumers in general select
Mask.
Detailed description of the invention
For fully open konjac glncomanan film haze mask of the present invention, below in conjunction with embodiment the present invention made into
One step describes in detail.
Embodiment 1, the preparation method of a kind of konjac glncomanan film haze mask, comprise the following steps:
(1) Rhizoma amorphophalli glucomannan perforated membrane is prepared: take konjak glucomannan fine powder 1g, ultra-pure water 99g, lead after constant temperature homogenizing is swelling
Enter in the flat board identical with mask cross-sectional sizes ,-18 DEG C of pretreatment 8h, then-50 DEG C, 10Pa vacuum lyophilization, make evil spirit
Taro glucomannoglycan perforated membrane；
(2) Rhizoma amorphophalli glucomannan nano-porous films is prepared: Rhizoma amorphophalli glucomannan nano-porous films is filter course, takes konjak portuguese gansu polyose
Glucide powder 1g, ultra-pure water 99g, after constant temperature homogenizing is swelling, use high voltage electric field to prepare nanometer coating materials, then ,-18 DEG C of pretreatment
8h ,-50 DEG C, 10Pa vacuum lyophilization, make Rhizoma amorphophalli glucomannan nano-porous films；
(3) selection: totally four layers of konjac glncomanan film haze mask, the outermost layer of ground floor and the 4th layer, i.e. mask and with
Facial contact layer, selects 20g/m respectively2And 30g/m2Non-woven fabrics；The second layer is Rhizoma amorphophalli glucomannan perforated membrane；Third layer is
Rhizoma amorphophalli glucomannan nano-porous films；
(4) mask is prepared: take the material described in step (1)～(3), stack in order, and cut out by the specification of mask, make
Mask.
Embodiment 2, the preparation method of a kind of konjac glncomanan film haze mask, comprise the following steps:
(1) Rhizoma amorphophalli glucomannan perforated membrane is prepared: take konjak glucomannan fine powder 2g, ultra-pure water 98g, lead after constant temperature homogenizing is swelling
Enter in the flat board identical with mask cross-sectional sizes ,-18 DEG C of pretreatment 8h, then-50 DEG C, 10Pa vacuum lyophilization, make evil spirit
Taro glucomannoglycan perforated membrane；
(2) Rhizoma amorphophalli glucomannan nano-porous films is prepared: Rhizoma amorphophalli glucomannan nano-porous films is filter course, takes konjak portuguese gansu polyose
Glucide powder 2g, ultra-pure water 98g, after constant temperature homogenizing is swelling, use high voltage electric field to prepare nanometer coating materials, then ,-18 DEG C of pretreatment
8h ,-50 DEG C, 10Pa vacuum lyophilization, make Rhizoma amorphophalli glucomannan nano-porous films；
(3) selection: totally four layers of konjac glncomanan film haze mask, the outermost layer of ground floor and the 4th layer, i.e. mask and with
Facial contact layer, selects 30g/m respectively2And 20g/m2Non-woven fabrics；The second layer is Rhizoma amorphophalli glucomannan perforated membrane；Third layer is
Rhizoma amorphophalli glucomannan nano-porous films；
(4) mask is prepared: take the material described in step (1)～(3), stack in order, and cut out by the specification of mask, make
Mask.
Embodiment 3, the preparation method of a kind of konjac glncomanan film haze mask, comprise the following steps:
(1) Rhizoma amorphophalli glucomannan perforated membrane is prepared: taking konjak glucomannan fine powder 1.5g, ultra-pure water 98.5g, constant temperature homogenizing is swelling
In the flat board that rear importing is identical with mask cross-sectional sizes ,-18 DEG C of pretreatment 8h, then-50 DEG C, 10Pa vacuum lyophilization, system
Become Rhizoma amorphophalli glucomannan perforated membrane；
(2) Rhizoma amorphophalli glucomannan nano-porous films is prepared: Rhizoma amorphophalli glucomannan nano-porous films is filter course, takes konjak portuguese gansu polyose
Glucide powder 1.5g, ultra-pure water 98.5g, after constant temperature homogenizing is swelling, use high voltage electric field to prepare nanometer coating materials, and then ,-18 DEG C pre-
Process 8h ,-50 DEG C, 10Pa vacuum lyophilization, make Rhizoma amorphophalli glucomannan nano-porous films；
(3) selection: totally four layers of konjac glncomanan film haze mask, the outermost layer of ground floor and the 4th layer, i.e. mask and with
Facial contact layer, selects 25g/m respectively2And 25g/m2Non-woven fabrics；The second layer is Rhizoma amorphophalli glucomannan perforated membrane；Third layer is
Rhizoma amorphophalli glucomannan nano-porous films；
(4) mask is prepared: take the material described in step (1)～(3), stack in order, and cut out by the specification of mask, make
Mask.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent with
Modify, all should belong to the covering scope of the present invention.
Claims (4)
1. a konjac glncomanan film haze mask, it is characterised in that cover body totally four layers, specific as follows:
(1) ground floor, i.e. outermost layer are non-woven fabrics；
(2) second layer is Rhizoma amorphophalli glucomannan perforated membrane；
(3) third layer is Rhizoma amorphophalli glucomannan nano-porous films；
(4) the 4th layers, be i.e. non-woven fabrics with facial contact layer.
2. the preparation method of a konjac glncomanan film haze mask as claimed in claim 1, it is characterised in that preparation
Step is as follows:
(1) Rhizoma amorphophalli glucomannan perforated membrane is prepared: take konjak glucomannan fine powder 1～2g, ultra-pure water 98～99g, constant temperature homogenizing
Importing after swelling in the flat board identical with mask cross-sectional sizes ,-18 DEG C of pretreatment 8h, then-50 DEG C, 10Pa vacuum freezing is done
Dry, make Rhizoma amorphophalli glucomannan perforated membrane；Described constant temperature homogenizing is swelling: konjak portuguese gansu polyose sugar juice is placed in 40 DEG C of waters bath with thermostatic control
In Guo, magnetic stirring apparatus 350rpm stirs 60min；
(2) Rhizoma amorphophalli glucomannan nano-porous films is prepared: take konjak glucomannan fine powder 1～2g, ultra-pure water 98～99g, constant temperature
After homogenizing is swelling, using high voltage electric field to prepare nanometer coating materials, then ,-18 DEG C of pretreatment 8h ,-50 DEG C, 10Pa vacuum freezing is done
Dry, make Rhizoma amorphophalli glucomannan nano-porous films；Described high voltage electric field prepares nanometer coating materials: by the Rhizoma amorphophalli after swelling for constant temperature homogenizing
Glucomannoglycan solution loads in the 10mL syringe that syringe needle internal diameter is 0.6mm, is then placed in high voltage electric field equipment, arranges height
The operational factor of piezoelectric field equipment is: 40 ± 3 DEG C, relative humidity 30%；Spinning distance 13cm, spinning voltage is 30kV, spinning
Flow velocity is 2.4ml/h, and the spinning time is 10mins；
(3) selection: totally four layers of konjac glncomanan film haze mask, the outermost layer of ground floor and the 4th layer, i.e. mask and with
Facial contact layer, selects 20～30g/m2Non-woven fabrics；The second layer is Rhizoma amorphophalli glucomannan perforated membrane；Third layer is Amorphophallus rivieri glucomannan
Polysaccharide nano-porous films；
(4) mask is prepared: take the material described in step (1)～(3), stack in order, and cut out by the specification of mask, make
Mask.
The preparation method of konjac glncomanan film haze mask the most according to claim 2, it is characterised in that described system
Standby Rhizoma amorphophalli glucomannan perforated membrane: take konjak glucomannan fine powder 1g, ultra-pure water 99g, import and mask after constant temperature homogenizing is swelling
In the flat board that cross-sectional sizes is identical ,-18 DEG C of pretreatment 8h, then-50 DEG C, 10Pa vacuum lyophilization, make konjak portuguese gansu polyose
Sugar perforated membrane.
The preparation method of konjac glncomanan film haze mask the most according to claim 2, it is characterised in that described system
Standby Rhizoma amorphophalli glucomannan nano-porous films: take konjak glucomannan fine powder 1g, ultra-pure water 99g, after constant temperature homogenizing is swelling, uses
High voltage electric field prepares nanometer coating materials, then ,-18 DEG C of pretreatment 8h ,-50 DEG C, and Amorphophallus rivieri glucomannan is made in 10Pa vacuum lyophilization
Polysaccharide nano-porous films.
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| CN201610361182.4A CN105962481B (en) | 2016-05-27 | 2016-05-27 | A kind of konjac glncomanan film haze mouth mask |
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| CN201610361182.4A CN105962481B (en) | 2016-05-27 | 2016-05-27 | A kind of konjac glncomanan film haze mouth mask |
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| CN105962481B CN105962481B (en) | 2017-08-25 |
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Cited By (10)
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| CN108208107A (en) * | 2018-01-05 | 2018-06-29 | 福建农林大学 | A kind of konjaku glucomannan artificial casing and preparation method thereof |
| CN108386120A (en) * | 2018-02-01 | 2018-08-10 | 福建农林大学 | A kind of konjaku glucomannan air purification nanometer screen window and preparation method thereof |
| CN109054511A (en) * | 2018-07-19 | 2018-12-21 | 福建农林大学 | A kind of konjaku glucomannan farm implements anticorrosive paint and preparation method thereof |
| CN109330062A (en) * | 2018-11-08 | 2019-02-15 | 上海应用技术大学 | Using nanometer porous film as the reusable mask of filter disc |
| CN110041764A (en) * | 2018-05-30 | 2019-07-23 | 陈全莉 | A kind of liquid mask patch and anti-haze antibacterial mask |
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| CN113068883A (en) * | 2021-04-02 | 2021-07-06 | 陕西科技大学 | Antibacterial mask chip and preparation method thereof |
| CN113563844A (en) * | 2020-04-29 | 2021-10-29 | 中国科学院近代物理研究所 | Cheap biomass-based antifogging agent and preparation method thereof |
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| CN108208107A (en) * | 2018-01-05 | 2018-06-29 | 福建农林大学 | A kind of konjaku glucomannan artificial casing and preparation method thereof |
| CN108386120A (en) * | 2018-02-01 | 2018-08-10 | 福建农林大学 | A kind of konjaku glucomannan air purification nanometer screen window and preparation method thereof |
| CN110041764A (en) * | 2018-05-30 | 2019-07-23 | 陈全莉 | A kind of liquid mask patch and anti-haze antibacterial mask |
| CN109054511A (en) * | 2018-07-19 | 2018-12-21 | 福建农林大学 | A kind of konjaku glucomannan farm implements anticorrosive paint and preparation method thereof |
| CN109330062A (en) * | 2018-11-08 | 2019-02-15 | 上海应用技术大学 | Using nanometer porous film as the reusable mask of filter disc |
| CN110241618A (en) * | 2019-06-15 | 2019-09-17 | 福建农林大学 | A kind of disposable washcloth of konjaku glucomannan and preparation method thereof |
| CN110936676A (en) * | 2019-11-29 | 2020-03-31 | 邯郸恒永防护洁净用品有限公司 | Filter layer body for efficient dust mask |
| CN110936676B (en) * | 2019-11-29 | 2023-03-28 | 邯郸恒永防护洁净用品有限公司 | Filter layer body for efficient dust mask |
| CN113563844A (en) * | 2020-04-29 | 2021-10-29 | 中国科学院近代物理研究所 | Cheap biomass-based antifogging agent and preparation method thereof |
| CN113563844B (en) * | 2020-04-29 | 2023-08-04 | 中国科学院近代物理研究所 | Low-cost biomass-based antifogging agent and preparation method thereof |
| CN112971242A (en) * | 2021-04-02 | 2021-06-18 | 陕西科技大学 | Konjac glucomannan membrane mask filter element and preparation method thereof |
| CN113068883A (en) * | 2021-04-02 | 2021-07-06 | 陕西科技大学 | Antibacterial mask chip and preparation method thereof |
| CN113068883B (en) * | 2021-04-02 | 2024-02-13 | 陕西科技大学 | Antibacterial mask chip and preparation method |
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