KR20200093314A - Air purification material enhanced static electricity durability and the manufacturing method thereof - Google Patents

Abstract

The present invention relates to an air purification material having enhanced static electricity durability by applying a piezoelectric polymer electrospun web and an electrostatic material melt blown web and a method for manufacturing the same. An embodiment of the present invention provides an air purification material having enhanced static electricity durability by including the mixture of a piezoelectric polymer (poly vinylidene difluoride or poly vinylidene fluoride-trifluoroethylene (PVDF-TrEF)) electrospun web having a dipole moment and a derived β phase and an electrostatic material (polypropylene (PP)) melt blown web.

Description

Air purification material enhanced static electricity durability and the manufacturing method thereof

The present invention relates to a filter material for air purification, and more specifically, a piezoelectric polymer (PVDF-TrFE ((Poly Vinylidene difluoride or Poly Vinylidene fluoride)-Trifluoroethylene), etc.) having a dipole moment induced electrostatic web and electrostatics Materials (Polypropylene (PP: Polypropylene), etc.) By applying a melt-blown web relates to a material for air purification with improved electrostatic durability and a method for manufacturing the same.

BACKGROUND OF THE INVENTION [0002] Porous fiber filters having static electricity are used for the purpose of dust-preventing ventilation in various devices such as dust masks, various air conditioning elements, air cleaners, and cabin filters. An example of such a fiber filter is a high dielectric constant nonwoven fabric produced by the electrospinning method of Korean Patent Publication No. 2002-0081152.

The fibrous filter without static electricity has an advantage of high porosity, long life, and low air resistance, but has a problem that the filter collection efficiency is small when the diameter of the trapped particles is about 0.1 to 1.0 μm.

Accordingly, a fibrous filter imparted with static electricity is used, and the fibrous filter imparted with static electricity has a very low pressure loss and a very good initial efficiency, but it has a problem that efficiency decreases rapidly due to a decrease in electrostatic force when collecting particles. Have

Republic of Korea Patent Publication No. 2002-0081152

Therefore, the present invention is to solve the problems of the above-described prior art, a piezoelectric polymer (PVDF-TrFE ((Poly Vinylidene difluoride or Poly Vinylidene fluoride)-Trifluoroethylene), etc.) having a dipole moment induced electrostatic web and electrostatic The material (polypropylene (PP: polypropylene), etc.) is composed of a melt-blown web mixture, and by providing electrostatic performance by mechanical stretching or electrical polling, the piezoelectric polymer electrospinning web is used to generate electrical dipole moments. It is an object of the present invention to provide a material for air purification with improved electrostatic durability and a method for manufacturing the electrostatic durability by having branches having a β phase.

In order to achieve the above-described technical problem, one embodiment of the present invention, the electrostatic durability is improved, characterized in that it comprises a piezoelectric polymer electrospinning web inducing a β phase having a dipole moment and an electrostatic material melt-blown web mixture Provide a material for air purification.

The piezoelectric polymer electrospinning web and electrostatic material melt-blown web mixture, the piezoelectric polymer electrospinning web includes PVDF-TrFE ((Poly Vinylidene difluoride or Poly Vinylidene fluoride)-Trifluoroethylene) electrospinning web and PP (polypropylene) melt-blown web. It is characterized by a mixed chain.

The mixture of the PVDF-TrFE electrospinning web and the PP melt-blown web, the PVDF-TrFE electrospinning web is produced by electrospinning, and the PP melt-blown web is manufactured by a melt-blown method and then fused and laminated. It is characterized in that the polarization layer is formed without performing the polarization treatment.

The PVDF-TrFE electrospinning web is characterized by having a crystal structure of a β phase having an electric dipole moment.

The PVDF-TrFE electrospinning web and the PP melt-blown web mixture are characterized in that the PVDF-TrFE electrospinning web and the PP melt-blown web are composed of one or more cross laminations.

The PVDF-TrFE electrospinning web has a weight ratio of 0.3 to 4 gsm, and the PP melt blown web has a weight ratio of 10 to 40 gsm.

The average fiber diameter of the PVDF-TrFE electrospinning web is characterized in that 50 to 800 nm.

The air purification material is characterized in that it further comprises a support in which the PVDF-TrFE electrospinning web and the PP melt-blown web mixture are fused and supported.

The support is characterized in that it is any one of a fiber nonwoven fabric or a fiber mesh having a hardness.

The piezoelectric electrospinning web and the electrostatic material melt blown web constituting the mixture of the piezoelectric polymer electrospinning web and the electrostatic material melt blown web are transition metal nano powders added during the electrospinning and melt blown process, respectively. It may be configured to further include a transition metal alloy nano powder.

In order to achieve the above technical problem, another embodiment of the present invention comprises the steps of: manufacturing a piezoelectric polymer electrospinning web formed of nanofibers by applying an electrospinning method to a piezoelectric polymer; Producing an electrostatic material melt-blown web by applying a melt-blown method to the electrostatic material; And manufacturing a piezoelectric polymer electrospinning web and an electrostatic material melt-blown web mixture by fusion laminating the piezoelectric polymer web and the electrostatic material melt-blown web; for air purification with improved electrostatic durability. Provides a method for making materials.

The piezoelectric polymer electrospinning web and the electrostatic material melt-blown web mixture are characterized by a mixture of PVDF-TrFE electrospinning web and PP melt-blown web.

The PVDF-TrFE electrospinning web is characterized by having a crystal structure of a β phase having an electric dipole moment.

The PVDF-TrFE electrospinning web has a weight ratio of 0.3 to 4 gsm, and the PP melt blown web has a weight ratio of 10 to 40 gsm.

The PVDF-TrFE electrospinning web is characterized in that it is produced by electrospinning a PVDF-TrFE material melted in an electrospinning solvent on a nonwoven fabric and then welding it.

The step of fabricating the PVDF-TrFE electrospinning web and the PP melt-blown web mixture is characterized in that the PVDF-TrFE electrospinning web and the PP melt-blown web are one or more cross-laminated.

The average fiber diameter of the PVDF-TrFE electrospinning web is characterized in that 50 to 800 nm.

The method for producing an air purification material includes: preparing a support; And a support fusing step of fusing and laminating the piezoelectric polymer electrospinning web and the electrostatic material melt-blown web mixture on the support.

In the step of manufacturing the piezoelectric polymer electrospinning web, electrospinning is performed by mixing transition metal nano powders or transition metal alloy nano powders with a piezoelectric polymer to perform electrospinning, thereby including piezoelectric polymer electrospinning including transition metal nano powders or transition metal alloy nano powders. The step of fabricating the web, and the step of fabricating the melt-blown web of the electrostatic material, is performed by mixing the electrostatic material with a transition metal nanopowder or a transition metal alloy nanopowder and performing a mat-brow method to form a transition metal nanopowder or transition metal. It may be a step of manufacturing a melt blown web of electrostatic material comprising alloy nanopowders.

The air purification filter to which the air purification material having improved electrostatic durability of the present invention having the above-described configuration is applied has a low pressure loss, and provides an effect of significantly improving filtering efficiency by maintaining electrostatic performance even in long-term use.

1 is a flow chart showing a process of the method for manufacturing a material for air purification with improved electrostatic performance according to an embodiment of the present invention.
2 is a view showing a process of manufacturing a PVDF-TrFE electrospinning web by electrospinning during the processing of FIG. 1.
Figure 3 is a photo of a PVDF-TrFE electrospinning web formed by electrospinning
4 is an XRD measurement graph of the PVDF-TrFE electrospinning web formed by electrospinning.

In the following description of the present invention, if it is determined that a detailed description of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

Since the embodiment according to the concept of the present invention can be modified in various ways and have various forms, specific embodiments will be illustrated in the drawings and described in detail in the present specification or application. However, this is not intended to limit the embodiments according to the concept of the present invention to a specific disclosure form, and it should be understood that the present invention includes all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

When an element is said to be "connected" or "connected" to another component, it is understood that other components may be directly connected to or connected to the other component, but there may be other components in between. It should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that no other component exists in the middle. Other expressions describing the relationship between the components, such as "between" and "immediately between" or "neighboring" and "directly neighboring to" should be interpreted as well.

The terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as “include” or “have” are intended to indicate that a feature, number, step, action, component, part, or combination thereof described is present, and one or more other features or numbers. It should be understood that it does not preclude the existence or addition possibility of steps, actions, components, parts or combinations thereof.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings showing embodiments of the present invention.

1 is a flow chart showing a process of the method for manufacturing an air purification material with improved electrostatic performance according to an embodiment of the present invention, and FIG. 2 is a process of manufacturing a PVDF-TrFE electrospinning web by electrospinning during the process of FIG. 1. It is a figure to show.

As shown in FIG. 1, a method for manufacturing an air purification material having improved electrostatic performance according to an embodiment of the present invention includes: a piezoelectric polymer electrospinning web manufacturing step (S10); It comprises a step (S30) of manufacturing the electrostatic material melt-blown web (S20), the piezoelectric polymer electrospinning web and the electrostatic material melt-blown web.

In the piezoelectric polymer electrospinning web fabrication step (S10), a piezoelectric polymer electrospinning web produced by piezoelectric polymer nanofibers is prepared by mixing an electrospinning solvent and a piezoelectric polymer and applying an electrospinning method.

In the step (S10) of manufacturing the PVDF-TrFE electrospinning web, a piezoelectric polymer solution is produced by mixing an electrospinning solvent and a piezoelectric polymer material. At this time, the electrospinning solvent may be dimethylformamid (DMF), acetone, or the like, and in the embodiment of the present invention, DMF and acetone were mixed in a volume ratio of 6 to 8 to 4 to 2 to prepare an electrospinning solvent. Then, a piezoelectric polymer material and an electrospinning solvent were mixed at 8wt%:25wt% to prepare a piezoelectric polymer electrospinning solution, and then electrospinning was performed using an electrospinning device to produce a piezoelectric polymer electrospinning web. The piezoelectric polymer material and the electrospinning solvent may be mixed at 5 to 10 wt%: 20 to 30 wt%. At this time, the piezoelectric polymer may be PVDF-TrFE (Poly Vinylidene difluoride or Poly Vinylidene fluoride)-Trifluoroethylene). In addition, to improve piezoelectric performance, a transition metal nanopowder or a transition metal alloy nanopowder having piezoelectric properties may be added to the piezoelectric molomer solution.

2, the electrospinning apparatus is composed of a syringe 10 and an electrospinning needle 20 and a collector 30, a voltage is applied between the electrospinning needle 20 and the collector 30, the cylinder PVDF-TrFE solution is injected into the paper 10 to perform electrospinning. At this time, the PVDF-TrFE electrospinning web may have a weight ratio of 0.3 to 4 gsm.

In addition, to impart strength, a PVDF-TrFE electrospinning web may be formed by electrospinning a PVDF-TrFE solution on a nonwoven fabric. In this case, the nonwoven fabric may have various weight ratios as necessary.

3 is a photo of the PVDF-TrFE electrospinning web formed by electrospinning, and FIG. 4 is an XRD measurement graph of the PVDF-TrFE electrospinning web formed by electrospinning.

In FIG. 3, it can be confirmed that the PVDF-TrFE electrospinning web formed by the above-described electrospinning is a web structure formed by the PVDF-TrFE nanofiber 1. And, as shown in Figure 4, it was confirmed that it has a crystal structure of the β phase having an electric dipole moment. When the air purification material including the PVDF-TrFE electrospinning web is manufactured as described above, as shown in FIG. 4, an excellent blackout by forming a β phase having an electric dipole moment on the produced PVDF-TrFE electrospinning web Performance. In addition, the PVDF-TrFE electrospinning web is formed with a β phase by mechanical stretching, so that static electricity is imparted, so that when electrostatic performance is deteriorated, recovery of electrostatic performance can be easily performed by applying vibration such as shaking. Have

Referring again to FIG. 1, in the step (S20) of manufacturing an electrostatic material melt-blown web using the melt-blown method, the weight ratio is 10 to 10 by spinning the fiber by applying a melt-blown method to the electrostatic material. A melt blown web of 40 gsm electrostatic material is produced. And the average fiber diameter of the resulting electrostatic material melt-blown web may be 1 to 3 ㎛. In this case, the piezoelectric material may be PP (Polyporopylene).

In the step (S30) of manufacturing the piezoelectric polymer electrospinning web and the electrostatic material melt-blown web mixture, the produced piezoelectric polymer electrospinning web and the electrostatic material melt-blown web are fused and stacked to form a nano piezoelectric polymo electrospinning web. And the electrostatic material melt-blown web mixture. In the above description, various fusion methods such as spun bond, chemical bond, ultrasonic fusion, heat fusion or glue fusion can be applied.

At this time, the piezoelectric polymer electrospinning web and the electrostatic material melt-blown web mixture can be made of PVDF-TrFE electrospinning web and PP melt-blown web mixture, and PVDF-TrFE electrospinning web layer-PP melt-blown web layer Or it may have the structure of a PP melt-blown web layer-PVDF-TrFE electrospinning web layer. The average fiber diameter of the PVDF-TrFE electrospinning web can range from 50 nm to 800 nm.

In addition, the step (S30) of fusion laminating the piezoelectric polymer electrospinning web and the electrostatic material melt-blown web may be a step of cross-layering the piezoelectric polymer electrospinning web and the electrostatic material melt-blown web. Accordingly, accordingly, the PVDF-TrFE electrospinning web and the PP melt-blown web mixture are composed of PVDF-TrFE electrospinning web layer-PP melt-blown web layer- PVDF-TrFE electrospinning web layer, or PP Melt-Brown Web Layer-PVDF-TrFE Electrospinning Web Layer-PP It may have a structure of a melt-blown web layer.

In addition, when repeatedly stacked, the PVDF-TrFE electrospinning web and the PP melt-blown web mixture may have a structure in which PVDF-TrFE electrospinning web or PP melt-blown web is sequentially cross-stacked. In the case, the PVDF-TrFE electrospinning web layer and the PP melt-blown web layer, which are cross-layered on the web layers to be added, need not have the same number.

The material for air purification of an embodiment of the present invention is a mixture of the PVDF-TrFE electrospinning web and an electrostatic material, a PP melt-blown web, which is made of a soft fiber, and may further include a support to increase strength and formability have.

Accordingly, in the method of manufacturing an air purifying material according to an embodiment of the present invention, as shown in FIG. 1, the step of manufacturing a support (S40) and the piezoelectric polymer electrospinning web and the electrostatic material melt-blown web mixture are fused and laminated on the support It may be configured to further include a support fusion step (S50).

The support may be a fiber nonwoven fabric or a fiber mesh, such as a PET (Polyethylene terephthalate) support made of a spunbond, thermal bond, chemical bond, etc., the support by having a rigidity (stifness) to enable a folding structure, When applied to the air purification material of one embodiment of the present invention, the filter to which the air purification material of the present invention is applied has a pleated structure such as a hepa filter, thereby increasing structural stability and collecting surface area to improve filter performance.

The material for air purification with improved electrostatic performance according to an embodiment of the present invention as described above is composed of a piezoelectric polymer electrospinning web and an electrostatic material melt-blown web mixture, wherein the piezoelectric polymer electrospinning web and the electrostatic material melt The new web mixture can be a PVDF-TrFE electrospinning web and a PP melt-blown web mixture.

The PVDF-TrFE electrospinning web and PP melt-blown web mixture, as described above, produced the PVDF-TrFE electrospinning web by an electrospinning method. The PP melt-blown web may be produced by a melt-blown method and then laminated by fusion. Since the polarization layer is thereby divided, it is possible to impart electrostatic properties by a fusion process without performing a separate polarization process.

At this time, the PVDF-TrFE electrospinning web and the PP melt-blown web may be composed of one or more cross laminations.

In addition, the air purification material of the embodiment of the present invention described above may have a configuration in which the PVDF-TrFE electrospinning web and the PP melt-blown web mixture are fused and stacked on a support.

<Example>

In order to evaluate the performance of the air purification material of the embodiment of the present invention, the following sample was prepared by applying a melt blown method.

* MB 1 (PP):

-20 gsm, fiber diameter 1 to 3 ㎛, thickness 0.24mm

-Filtration performance: 2.8 mmAq, 99.97% (filtrate: 0.3㎛ NaCl, 5.33cm/s)

* PVDF-TrFE electrospinning web:

-1 gsm, fiber diameter 150 to 300nm, thickness 0.1 mm

-Filtration performance: 1 mmAq, 53% (filtrate: 0.3 µm NaCl, 5.33 cm/s)

* Support:

-PET spunbond web (60 gsm), air permeability 750 cfm (125 pa), thickness 0.22 mm

* Sample 1:

-Support + MB 1 (PP)

-Lamination method: ultrasonic welding

-Bonding material properties:

Weight 80 gsm

Thickness: 0.43 mm

Filtration performance: 99.97%, 3.0 mmAq (filtrate: 0.3㎛ NaCl, 5.33cm/s)

* Sample 2:

-Support + PVDF-TrFE electrospinning web

-Lamination method: ultrasonic welding

-Bonding material properties:

Weight 61 gsm

Thickness: 0.23 mm

Filtration performance: 52.3 %, 1.2 mmAq (filtrate: 0.3㎛ NaCl, 5.33cm/s)

* Sample 3:

-Support + MB 1 (PP) + PVDF-TrFE electrospinning web

-Lamination method: ultrasonic welding

-Bonding material properties:

Weight: 81 gsm

Thickness: 0.44 mm

Filtration performance: 99.99%, 4.2 mmAq (filtrate: 0.3㎛ NaCl, 5.33cm/s)

<IPA test>

After performing the initial performance and IPA treatment for 3 hours at room temperature after leaving for 24 hours in IPA (isopropyl alcohol) saturated steam for the above-mentioned samples, applying the TSI 8130 model, the flow rate of 0.3㎛ NaCl is 5.33cm/ Performance was measured by passing through s, and the measurement results are shown in [Table 1] below.

As shown in Table 1, the pressure loss of the initial sample 1 was 3 mmAq and the filtration efficiency was 99.97%. After removing static electricity by IPA treatment for 24 hours, the pressure loss was 2.9 mmAq, but the filtration efficiency was reduced to 37.5%.

The initial sample 2 had a pressure loss of 1.2 mmAq and a filtration efficiency of 52.3%. After 24 hours of IPA treatment to remove static electricity, the pressure loss was 1.1 mmAq, but the filtration efficiency decreased to 26.8%.

The initial sample 3 had a pressure loss of 4.2 mmAq and a filtration efficiency of 99.99%, and after 24 hours of IPA treatment to remove static electricity, the pressure loss was 3.4 mmAq, but the filtration efficiency decreased to 54.24%.

Thereafter, after shaking the samples 10 times to apply pressure, the TSI 8130 model was applied, and the performance was measured by passing 0.3 μm NaCl through a flow rate of 5.33 cm/s, and the measurement results are shown in [Table 2] below.

As shown in [Table 2], the pressure loss of Sample 1, which was removed by static electricity by IPA for 24 hours, was 2.9 mmAq, the filtration efficiency was reduced to 37.5%, and the pressure loss after applying static electricity by shaking 10 times to apply mechanical pressure was It was 2.9 mmAq and the filtration efficiency was almost unchanged at 37.5%.

The sample 2 removed by static electricity by IPA treatment for 24 hours had a pressure loss of 1.1 mmAq and a filtration efficiency of 26.8%, and the pressure loss after applying static electricity by applying mechanical pressure by shaking 10 times was 1.1 mmAq and the filtration efficiency of 45.3 There was a slight improvement in %.

Sample 3 removed by static electricity by IPA treatment for 24 hours had a pressure loss of 3.4 mmAq and a filtration efficiency of 54.25%. The pressure loss after applying static electricity by shaking mechanically by shaking 10 times was 3.4 mmAq and the filtration efficiency of 72.7. There was a great performance improvement in filtration efficiency in %.

As a result of the IPA test, in the case of PVDF-TrFE electrospinning web (MB 3) and sample 3 (support-PP melt-blown web (MB 1)-PVDF-TrFE electrospinning web laminate) of the embodiment of the present invention, electrostatic performance deteriorated After applying sufficient pressure by mechanical vibration, it was confirmed that electrostatic performance and filtration efficiency were significantly improved.

<Filter performance test>

Filter performance after installing the sample 1, sample 2, and sample 3 of 0.06 m ² in different 1 m ³ chambers, generating smoke, and then operating the tester for 30 minutes to have an air flow rate of 0.1 m/s. Was measured, and the measurement results are shown in [Table 3].

As shown in Table 3, the pressure loss of the initial sample 1 was 3.0 mmAq, the filtration efficiency was 99.97%, the pressure loss after filtering 5 cigarette smokes was 3.1 mmAq, the filtration efficiency was 98.7%, and 10 cigarettes The pressure loss after filtering the smoke was 3.1 mmAq, the filtration efficiency was 86.5%, the pressure loss after filtering 20 cigarette smokes was 3.2 mmAq, and the filtration efficiency was reduced to 61.4%.

The pressure loss of the initial sample 2 was 1.2 mmAq, the filtration efficiency was 52.3%, the pressure loss after filtering 5 cigarette smokes was 3.5 mmAq, the filtration efficiency was 99.72%, and the pressure loss after filtering 10 cigarette smokes Was 1.5 mmAq, the filtration efficiency was 48.44%, the pressure loss after filtering 20 cigarette smokes was 1.9 mmAq, and the filtration efficiency was reduced to 50.2 4%.

The pressure loss of the initial sample 3 was 4.2 mmAq, the filtration efficiency was 99.99%, the pressure loss after filtering 5 cigarette smokes was 4.2 mmAq, the filtration efficiency was 99.94%, and the pressure loss after filtering 10 cigarette smokes Was 4.2 mmAq, the filtration efficiency was 99.94%, the pressure loss after filtering 20 cigarette smokes was 4.3 mmAq, and the filtration efficiency was 93.3%, which was very low and very small.

Filter performance test results In addition, in the case of sample 3 (support-PP melt-blown web (MB 1)-PVDF-TrFE electrospinning web laminate) of the embodiment of the present invention, the dust collecting ability was lowered in the results of the same filtration. As very small, it was confirmed that the electrostatic performance was significantly improved since the static electricity was continuously maintained even after continuous filtration.

Although the technical spirit of the present invention described above has been specifically described in a preferred embodiment, it should be noted that the above embodiment is for the purpose of description and not of limitation. In addition, a person having ordinary knowledge in the technical field of the present invention will understand that various embodiments are possible within the scope of the technical spirit of the present invention. Therefore, the true technical protection scope of the present invention should be defined by the technical spirit of the appended claims.

1: PVDF-TrFE fiber
10: syringe
20: Electric Bang Needle
30: collector

Claims (18)

Air purification material with improved electrostatic durability, characterized in that it comprises a mixture of a piezoelectric polymer electrospinning web inducing a β phase having a dipole moment and an electrostatic material melt-blown web. According to claim 1, The piezoelectric polymer electrospinning web and the electrostatic material melt-blown web mixture,
PVDF-TrFE (Poly Vinylidene difluoride or Poly Vinylidene fluoride)-Trifluoroethylene (PP) web and PP (polypropylene) melt blown web mixture, characterized in that it consists of a mixture of electrostatic durability improved air purification material. According to claim 2, The PVDF-TrFE electrospinning web and PP melt-blown web mixture,
The PVDF-TrFE electrospinning web is produced by electrospinning, and the PP melt-blown web is produced by a melt-blow method and then fused and laminated to form a polarization layer without performing polarization treatment. Air purification material with improved electrostatic durability. According to claim 2, wherein the PVDF-TrFE electrospinning web,
A material for air purification with improved electrostatic durability, which has a crystal structure of a β phase having an electric dipole moment. According to claim 2, The PVDF-TrFE electrospinning web and the PP melt-blown web mixture,
The PVDF-TrFE electrospinning web and the air-purifying material having improved electrostatic durability, characterized in that the PP melt-blown web is composed of one or more cross-layers. According to claim 2,
The PVDF-TrFE electrospinning web has a weight ratio of 0.3 to 4 gsm,
The PP melt-blown web is an air purification material with improved electrostatic durability, characterized in that the weight ratio is 10 to 40 gsm. The method of claim 2, wherein the average fiber diameter of the PVDF-TrFE electrospinning web is 50 to 800 nm, characterized in that the electrostatic durability improved air purification material. According to claim 2,
The PVDF-TrFE electrospinning web and the air-tightening durability improved air purification material, characterized in that further comprises a support to which the PP melt-blown web mixture is fused and supported. The piezoelectric electrospinning web and the electrostatic material melt-blown web constituting the mixture of the piezoelectric polymer electrospinning web and the electrostatic material melt-blown web,
The electrostatic durability improved air purification material, characterized in that further comprises a transition metal nano-powder or a transition metal alloy nano-powder added during the electrospinning and melt-blow process, respectively. Producing a piezoelectric polymer electrospinning web by applying an electrospinning method to the piezoelectric polymer;
Producing an electrostatic material melt-blown web by applying a melt-blown method to the electrostatic material; And
And manufacturing the piezoelectric polymer electrospinning web and the electrostatic material melt-blown web mixture by fusion laminating the piezoelectric polymer web and the electrostatic material melt-blown web. Production method. 11. The method of claim 10, The piezoelectric polymer electrospinning web and the electrostatic material melt-blown web mixture,
PVDF-TrFE electrospinning web and PP melt-blown web mixture, characterized in that the electrostatic durability improved air purification material manufacturing method. The method of claim 11, wherein the PVDF-TrFE electrospinning web,
A method for producing a material for air purification with improved electrostatic durability, which has a crystal structure of a β phase having an electric dipole moment. The method of claim 11,
The PVDF-TrFE electrospinning web has a weight ratio of 0.3 to 4 gsm,
The PP melt-blown web has a weight ratio of 10 to 40 gsm, characterized in that the electrostatic durability improved air purification material manufacturing method. The method of claim 11, wherein the PVDF-TrFE electrospinning web,
A method for manufacturing a material for air purification with improved electrostatic durability, characterized in that the PVDF-TrFE material melted in an electrospinning solvent on a nonwoven fabric is electrospun and then fused. The method of claim 11, wherein the step of manufacturing the PVDF-TrFE electrospinning web and the PP melt-blown web mixture,
The PVDF-TrFE electrospinning web and the PP melt-blown web, one or more cross-lamination step, characterized in that the electrostatic durability improved air purification material manufacturing method. The method of claim 11,
The PVDF-TrFE electrospinning web has an average fiber diameter of 50 to 800 nm, characterized in that the electrostatic durability is improved air purification material manufacturing method. The method of claim 11,
Manufacturing a support; And
The PVDF-TrFE electrospinning web and a PP melt-blown web mixture fusion-supporting step of fusion laminating on the support; further comprising a static electricity durability improved air purification material manufacturing method comprising the. The method of claim 10,
In the step of manufacturing the piezoelectric polymer electrospinning web, electrospinning is performed by mixing transition metal nano powders or transition metal alloy nano powders with a piezoelectric polymer to perform electrospinning, thereby including piezoelectric polymer electrospinning including transition metal nano powders or transition metal alloy nano powders. Web production stage,
The step of manufacturing the melt-blown web of the electrostatic material includes electrostatic material including a transition metal nano powder or a transition metal alloy nano powder by mixing the transition metal nano powder or the transition metal alloy nano powder with a meta-brow method. Material Manufacturing method for air purification with improved electrostatic durability, which is a step of manufacturing a melt-blown web.

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