CN111300931A

CN111300931A - Material for mask and preparation method

Info

Publication number: CN111300931A
Application number: CN202010206002.1A
Authority: CN
Inventors: 周俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2020-06-19

Abstract

The invention relates to a material for a mask and a preparation method thereof, and develops a material capable of filtering and disinfecting, which can be used for repeatedly utilizing the mask prepared by the material and reducing the risk of virus infection by purifying and disinfecting dust and spray adsorbed on the surface of non-woven fabric.

Description

Material for mask and preparation method

Technical Field

The application relates to a medical material and a preparation method thereof, in particular to a method for filtering and disinfecting materials for a mask.

Background

The core material of present preparation gauze mask is the melt-blown non-woven fabrics, be in the filter core layer in the middle of the gauze mask, the composition is mainly polypropylene, be a superfine electrostatic fiber cloth, can catch dust and droplet, the droplet that contains pneumovirus is close to behind the melt-blown non-woven fabrics, can be adsorbed on the non-woven fabrics surface by static, can't see through, dust and droplet are caught the back by superfine electrostatic fiber, it breaks away from because of the washing extremely not easily, and the washing also can be destroyed the dust absorption ability of static, consequently this kind of gauze mask can only disposable, need often change the gauze mask, cause the resource transition waste, and frequently change the gauze mask also can increase the risk of infecting the virus.

Disclosure of Invention

Aiming at the technical problems, the invention develops a material capable of filtering and sterilizing, and the material can be used for purifying and sterilizing dust and spray adsorbed on the surface of non-woven fabric, so that a mask prepared by the material can be reused for many times, and the risk of virus infection is reduced.

The invention takes non-woven fabrics as a substrate material, and coats a fiber membrane, wherein active ingredients are added into the fiber membrane, and are prepared by a specific process, and the active ingredients mainly contain inorganic particle powder additives and anti-virus Chinese herbal medicine components.

Step one, selecting a non-woven fabric base material, wherein the non-woven fabric base material is preferably a polypropylene non-woven fabric, and other polypropylene modified materials or similar substitutes can also be selected.

And step two, preparing the fiber membrane, wherein the fiber membrane is of an ultrafine structure, and is preferably a nanofiber membrane.

And step three, coating.

And step four, detecting the sample. Detecting air permeability, negative oxygen ion release amount, purification effect and the like.

And in the second step, preparing a solution, selecting two or more than two high molecular polymer powders, one of which is a solvent and the other of which is a solute, weighing a certain weight according to the proportion requirement of the solute and the solvent, mixing and stirring at a specific temperature, standing for a period of time after stirring, and then adding an active ingredient to form a mixed solution.

Further, in order to uniformly mix the mixed solution, ultrasonic vibration is applied to obtain a uniformly mixed solution.

Further, the uniformly mixed solution is subjected to high-pressure jet by using spinning equipment to form a fiber membrane, and the fiber can be in a superfine fiber structure or a nanofiber structure according to the process requirements.

Wherein, in the third step, the fiber film obtained in the second step is utilized to immediately carry out clean and dustless coating.

Further, in the coating process, the non-woven fabric substrate is rolled on a roller, and the rolling is carried out while the edge is rolled up, coated and rolled.

Further, in the coating process, it is preferable to coat in a clean room, preferably to a 10-grade standard or a 100-grade standard.

The material prepared by the process can be used as a filter element material for a mask and the like which need to filter air for disinfection, can purify air and disinfect the air due to the addition of active ingredients, can release negative oxygen ions, stimulates the immunity of a human body, and reduces the risk of illness.

Examples

1. Selecting a non-woven fabric substrate, wherein the non-woven fabric substrate is a polypropylene non-woven fabric, rolling the non-woven fabric substrate on a roller, and conveying the non-woven fabric substrate into a 10-grade dust-free workshop;

2. preparing a fiber membrane, selecting a solute of polytetrafluoroethylene or polyvinylidene fluoride, preferably polyvinylidene fluoride, a solvent of dimethylformamide, weighing 400g of polyvinylidene fluoride and 600g of dimethylformamide, dissolving polyvinylidene fluoride in dimethylformamide, mixing and stirring at the temperature of 50-90 ℃, preferably at the temperature of 75 ℃, standing and preserving heat for a period of time after stirring, and keeping for about 10-14 hours; adding 80-120g of active ingredients, and vibrating by ultrasonic waves to obtain a uniformly mixed solution, wherein the active ingredients are added with main inorganic particle powder additives and antivirus Chinese herbal medicine ingredients, the ingredients of the inorganic particle powder are shown in table 1, and the ingredients of the antivirus Chinese herbal medicine are shown in table 2;

TABLE 1 (mass fraction)

Al2O3	SiO2	B2O3	MgO	Fe2O3	Na2O	K2O	P2O5	TiO2	FeO
										30-40	30	9-10	5	10	0.5	0.1	0.3	0.2	0.2

TABLE 2 (mass fraction)

Folium Artemisiae Argyi	Honeysuckle flower	Realgar	Radix Isatidis	Dandelion	Coptis root, rhizoma Coptidis	Dried orange peel
							25-30	20-24	10-15	10-15	8-10	2-3	0-2

Storing the mixed solution into a movable injector, wherein the injector can be clamped by a multi-degree-of-freedom manipulator, and when the injector is used, the mixed solution is stored in the movable injector

When the solution in the syringe is poured into the needle tip, it forms stable jet flow under the action of high-voltage electric field, and through high-speed drawing and phase separation, the fibre membrane is formed. The spinning equipment parameters are as follows in table 3:

TABLE 3

Voltage of	Speed of rotation	Distance between two adjacent plates	Rotational speed	Temperature of	Humidity
						20-30Kv	0.6ml/h	10-16	40	25℃	50%

3. And (3) coating, namely winding the non-woven fabric substrate on a roller, depositing and coating the fiber membrane obtained in the step (2) on the non-woven fabric substrate, and performing unreeling, edge rolling, coating and reeling at the same time, wherein the unreeling and reeling speed is coordinated with the spinning speed.

4. Step four, sample detection is carried out, the purpose of detection is mainly to judge whether the material meets the quality requirements of products such as a mask, and the like, the main indexes include detection air permeability, negative oxygen ion release amount, purification effect, pressure resistance and the like, the material obtained by the experiment has the purification efficiency of 99.999 percent, the pressure resistance is below 5Pa, and the negative oxygen ion release amount reaches 3000cc^-1The above.

Claims

1. The medical material comprises a non-woven fabric, wherein the non-woven fabric is coated with a fiber film, and is characterized in that: the fiber membrane contains active ingredients.

2. The material of claim 1, wherein the active ingredients are inorganic particle powder additives and anti-virus herbal ingredients.

3. The material according to any one of claims 1 to 2, wherein the inorganic particle powder additive comprises alumina, silica or the like, and is capable of releasing negative oxygen ions.

4. The material according to one of claims 1-2, wherein the anti-virus Chinese herbal medicine components comprise folium artemisiae argyi, honeysuckle, realgar and other components, and can kill virus to air.

5. A method of making using the material of claims 1-4, comprising: step one, selecting a non-woven fabric base material; preparing a fiber membrane, wherein the fiber membrane is of an ultrafine structure; step three, coating; and step four, detecting the sample, and detecting the air permeability, the negative oxygen ion release amount, the purification effect and the like.

6. A mask prepared by using the material of claims 1-5, wherein the material is a filter element layer material of the mask and has a purifying and sterilizing function.