KR20200093733A - 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 and a method for manufacturing the same, by employing 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. An embodiment of the present invention includes the mixture of a piezoelectric polymer web and an electrostatic material melt blown web. The mixture of the piezoelectric polymer web and the electrostatic material melt blown web is the mixture of Poly Vinylidene difluoride melt blown web (Poly Vinylidene fluoride melt blown web) and a polypropylene 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, an air purifying material having improved electrostatic durability by applying a mixture of a piezoelectric polymer melt-blown web and an electrostatic material melt-blown web in which a β phase having a dipole moment is induced. And a method of 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 of having a small value of filter collection efficiency 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

In addition, when manufacturing fibers by applying electrospinning, there is also a problem that it is difficult to impart static electricity.

Republic of Korea Patent Publication No. 2002-0081152

Therefore, the present invention is to solve the problems of the prior art described above, it is produced by a melt blown (melt blown) method, the piezoelectric polymer melt blown web having a β phase having an electric dipole moment and the electrostatic material melt blown web An object of the present invention is to provide a material for air purification with improved electrostatic durability and a method for manufacturing the same, including a mixture.

In order to achieve the above technical problem, an embodiment of the present invention includes a piezoelectric polymer melt-blown web and an electrostatic material melt-blown web mixture, and the piezoelectric polymer melt-blown web and an electrostatic material melt-blown web mixture , PVDF melt blown web (Poly Vinylidene difluoride melt brown web or Poly Vinylidene fluoride melt brown web) and PP melt blown web (polypropylene melt brown web) mixture provides a static electricity enhanced air purification material characterized by a mixture.

The PVDF melt blown web and PP melt blown web mixture is characterized in that the PVDF melt blown web and the PP melt blown web are each independently formed by a melt blown method and then fused and laminated.

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

The PVDF melt blown web and the PP melt blown web mixture is a PVDF and PP mixed melt fiber in which PVDF and PP are mixed in a fibrous form by simultaneously spinning a PVDF material and a PP material by a Bico meltbrown method. It is characterized by being composed of a new web.

The PVDF melt blown web has a weight ratio of 2 to 15 gsm, and the PP melt blown web has a weight ratio of 10 to 40 gsm.

The PVDF fiber constituting the PVDF melt-blown web is characterized in that the average fiber diameter is 0.6 to 5 ㎛.

The air purification material is characterized by further comprising a support in which the PVDF melt-blown web and the PP melt-blown web mixture are fused and supported.

The piezoelectric polymer melt blown web and the electrostatic material melt blown web mixture are prepared by mixing transition metal nano powders or transition metal alloy nano powders before performing the melt blow process, thereby forming a transition metal nano powder or transition metal alloy therein. It characterized in that it comprises a nano powder.

In order to achieve the above technical problem, another embodiment of the present invention comprises the steps of: manufacturing a piezoelectric polymer melt-blown web and an electrostatic material melt-blown web mixture; to provide.

The piezoelectric polymer melt blown web is a PVDF melt blown web (Poly Vinylidene difluoride melt brown web or Poly Vinylidene fluoride melt brown web), and the electrostatic material melt blown web is a PP melt blown web. It is characterized by.

The PVDF melt blown web has a weight ratio of 2 to 15 gsm, and the PP melt blown web has a weight ratio of 10 to 40 gsm.

The PVDF fiber constituting the PVDF melt-blown web is characterized in that the average fiber diameter is 0.6 to 5 ㎛.

The step of manufacturing the piezoelectric polymer melt blown web and the electrostatic material melt blown web mixture is to apply PVDF melt blown web and PP melt blown web (polypropylene melt brown web) respectively by applying an independent melt blown method, respectively. Producing; And fusion laminating the PVDF melt blown web and the PP melt blown web.

In the step of producing the PVDF melt blown web and the PP melt blown web (polypropylene melt brown web) respectively by applying the independent melt blown method, respectively, the PVDF melt blown web and the PP melt blown web each transition It is characterized in that it is a step of performing the melt-blown method by mixing the transition metal nano powder or the transition metal alloy nano powder to include the metal nano powder or the transition metal alloy nano powder.

The step of fusion laminating the PVDF melt-blown web and the PP melt-blown web may be a step of cross-layering the PVDF melt-blown web and the PP melt-blown web.

The step of manufacturing the piezoelectric polymer melt-blown web and the electrostatic material melt-blown web mixture comprises a PVDF (Poly Vinylidene difluoride or Poly Vinylidene fluoride) material and a PP (polypropylene) material using a Bico meltbrown method. It is characterized by applying PVDF and PP in a fibrous manner to produce a PVDF melt blown web and PP melt blown mixture.

The step of manufacturing the PVDF melt blown web and PP melt blown web mixture is such that the PVDF melt blown web and PP melt blown mixture contain transition metal nanopowder or transition metal alloy nanopowder, and the PVDF material. It characterized in that it is a step of performing the above-described bico melt blown method by mixing a transition metal nano powder or a transition metal alloy nano powder in a PP material.

The PVDF and PP melt-blown web and PP melt-blown web mixtures in which the PVDF and PP are mixed in a fibrous form are characterized in that they are laminated in multiple layers by fusing.

The method for producing an air purification material includes: preparing a support; And a support fusing step of fusing and laminating the PVDF melt blown web and PP melt blown web mixture on the support.

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.
Figure 2 is a flow chart showing the process of producing a PVDF melt-blown web and PP melt-blown web mixture PVDF melt-blown web and PP melt-blown web, respectively, and then welding and laminating them during the process of FIG.
Figure 3 is a flow chart showing the process of producing a PVDF melt blown web and PP melt blown web mixture during the process of Figure 1 by simultaneously spinning the PVDF material and the PP material by a bico melt brown method.
4 is an XRD measurement graph of a PVDF melt blown web produced by a melt blown method.

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 a method for manufacturing a material for air purification with improved electrostatic performance using PVDF as a piezoelectric polymer of one embodiment of the present invention and using PP as an electrostatic material, and FIG. 2 is a process of FIG. 1 Flowchart showing the process of producing PVDF melt-blown web and PP melt-blown web mixture using PVD and PP materials, which are piezoelectric polymers, respectively, and then fabricating them by welding and laminating them. 3 is a process of simultaneously spinning PVDF material and PP material by using a PVDF melt blown web and PP melt blown web mixture as a piezoelectric polymer as a piezo polymer, in the process of FIG. 1. 4 is an XRD measurement graph of a PVDF melt blown web produced by a melt blown method.

As shown in FIG. 1, the method of manufacturing an air purification material having improved electrostatic performance according to an embodiment of the present invention is an example of a mixture of a piezoelectric polymer melt blown web and an electrostatic material melt blown web to which static electricity is applied, PVDF melt blown web It comprises a step (S10) of producing a polyvinylidene difluoride melt brown web or a poly vinylidene fluoride melt brown web) and a PP melt blown web mixture. In this case, the piezoelectric polymer melt-blown web and the electrostatic material melt-blown web mixture may include a transition metal nano powder or a transition metal alloy nano powder having piezoelectric properties to improve piezoelectric performance.

The PVDF melt blown web may have a weight ratio of 2 to 15 gsm, and the PP melt blown web may have a weight ratio of 10 to 40 gsm. In addition, the average fiber diameter of the PVDF fibers constituting the PVDF melt blown web may be 0.6 to 5 μm, and the average fiber diameter of the PP melt blown web may be 1 to 3 μm.

When the air purifying material including the PVDF melt blown web is manufactured by applying the melt blown method as described above, as shown in FIG. 4, it has a crystal structure of α and β in the PVDF crystal region. At this time, the α phase has a zero net dipole moment, but the structure of the β phase has an electric dipole moment, and thus, has a good electrostatic performance by forming a β phase having an electric dipole moment on the fabricated PVDF melt blown web. In addition, since the PVDF melt-blown web has a β phase formed by mechanical stretching when electrostatic performance is reduced, static electricity is imparted, and when electrostatic performance is reduced, recovery of electrostatic performance is easily performed by applying vibration such as shaking. It has the characteristics of making it possible.

The above-described PVDF melt blown web and PP melt blown web mixture can be produced in two ways, and accordingly, the step (S10) of manufacturing the PVDF melt blown web and PP melt blown web mixture is two. You can have a process of.

First, the step of manufacturing the PVDF melt-blown web and PP melt-blown web mixture (S10), as shown in FIG. 2, the step of producing the PVDF melt-blown web and PP melt-blown web mixture (S10) , Independent PVB melt blown web and PP melt blown web (polypropylene melt brown web) respectively by applying an independent melt blown method (S11) and the PVDF melt blown web and PP melt blown web mixture It may be configured to include a step (S12) of fusion laminating the PVDF melt-blown web and the PP melt-blown web for production. The PVDF melt blown web and the PP melt blown web may be manufactured to include the above-described transition metal nano powder or transition metal alloy nano powder having piezoelectric properties to improve electrostatic performance.

Thereby, the PVDF melt blown web and PP melt blown web mixture may have the structure of a PVDF melt blown web layer-PP melt blown web layer or PP melt blown web layer-PVDF melt blown web layer. . When a PVDF melt-blown web is produced by applying a melt-blown method to PVDF, a β-phase having an electric dipole is formed on the produced PVDF melt-blown web, thereby having electrostatic properties.

In addition, the step (S12) of fusion laminating the PVDF melt blown web and the PP melt blown web may be a step of cross-layering the PVDF melt blown web and the PP melt blown web. Accordingly, the PVDF melt blown web and PP melt blown web mixture is composed of a PVDF melt blown web layer-a PP melt blown web layer, or a structure of a PP melt blown web layer-PVDF melt blown web layer. Can have

In addition, when repeatedly stacked, the PVDF melt blown web and PP melt blown web mixture may have a structure in which PVDF melt blown web or PP melt blown web is sequentially cross-stacked. The PVDF melt-blown web layer and the PP melt-blown web layer, which are composed of cross-layers on the web layers, are not required to have the same number.

Next, in the step (S10) of manufacturing the PVDF melt-blown web and PP melt-blown web mixture, a PVDF (Poly Vinylidene difluoride or Poly Vinylidene fluoride) material and a PP (polypropylene) material as shown in FIG. It may be a step (S13) of manufacturing a PVDF melt blown web and a PP melt blown mixture in which PVDF and PP are mixed in a fibrous manner by applying a melt blown (Bico meltbrown) method. In this process, the above-described bico melt blown method including the above-described transition metal nano powder or transition metal alloy nano powder having piezoelectric properties may be applied to improve electrostatic performance.

The PVDF and PP melt-blown webs and PP melt-blown mixtures in which the PVDF and PP produced by the above-described process of FIG. 3 are mixed in a fibrous manner may also be laminated in multiple layers by fusing.

Referring again to FIG. 1, in the air purification material of an embodiment of the present invention, the PVDF melt-blown web and the PP melt-blown web mixture are made of a soft fiber, so a support is added to increase strength and formability Can be configured.

Accordingly, the method of manufacturing an air purification material according to an embodiment of the present invention comprises the steps of manufacturing a PET (Polyethylene terephthalate) web support by a spunbond process as shown in FIG. 1 (S20) and the PVDF melt-blown web And PP melt-blown web mixture may be configured to further comprise a support fusion step (S30) for fusion lamination to the PET web support.

The support may be a fiber nonwoven fabric or a fiber mesh, such as a PET (Polyethylene terephthalate) support made of a spun bond, thermal bond, chemical bond, etc., such support by having a stiffness (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 one embodiment of the present invention as described above includes: PVDF melt blown web (Poly Vinylidene difluoride melt brown web or Poly Vinylidene fluoride melt brown web) and PP melt blown web (polypropylene melt brown web) ) It is composed of a mixture.

At this time, the PVDF melt blown web and PP melt blown web mixture, as described above, the PVDF melt blown web and the PP melt blown web are each independently formed by a melt blown method to be fused and laminated. Can.

In addition, the PVDF melt blown web and the PP melt blown web may be composed of one or more cross laminations.

In addition, the PVDF melt blown web and the PP melt blown web mixture,

The PVDF material and the PP material are simultaneously spun by a bico meltbrown method to be composed of a PVDF and PP mixed melt blown web in which PVDF and PP are mixed in a fibrous form, and the PVDF and PP are mixed in a fibrous form. PVDF and PP mixed melt-blown webs can also be fused and laminated to have multiple layers.

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

In the above description, various fusion methods such as spun bond, chemical bond, ultrasonic fusion, heat fusion or glue fusion may be applied to the fusion.

<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)

* MB 2 (PP):

-30 gsm, fiber diameter 3 to 5 ㎛, thickness 0.29mm

-Filtration performance: 3.4 mmAq, 99.98% (filtrate: 0.3㎛ NaCl, 5.33cm/s)

* MB 3 (PVDF):

-10 gsm, fiber diameter 3 to 5 ㎛, thickness 0.15mm

-Filtration performance: 1 mmAq, 35% (Filtration material: 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 90gsm

Thickness: 0.60mm

Filtration performance: 99.97%, 3.5 mmAq (filtrate: 0.3㎛ NaCl, 5.33cm/s)

* Sample 2:

-Support + MB 2 (PP)

-Lamination method: ultrasonic welding

-Bonding material properties:

Weight 90gsm

Thickness: 0.50mm

Filtration performance: 99.97%, 3.5 mmAq (filtrate: 0.3㎛ NaCl, 5.33cm/s)

* Sample 3:

-Support + MB 1 (PP) + MB3 (PVDF)

-Lamination method: ultrasonic welding

-Bonding material properties:

Weight 90gsm

Thickness: 0.60mm

Filtration performance: 99.98%, 3.8 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 MB 1 was 2.8 mmAq and the filtration efficiency was 99.97%. After removing static electricity by IPA treatment for 24 hours, the pressure loss was 2.8 mmAq, but the filtration efficiency was reduced to 37.5%.

The initial MB 2 had a pressure loss of 3.4 mmAq and a filtration efficiency of 99.98%. After removing static electricity by IPA treatment for 24 hours, the pressure loss was 3.4 mmAq, but the filtration efficiency was reduced to 39.8%.

The pressure loss of the initial MB 3 was 1.0 mmAq, the filtration efficiency was 26.6%, and the pressure loss was 1.0 mmAq after the IPA treatment was removed for 24 hours, but the filtration efficiency was reduced to 15.1%.

The initial sample 1 had a pressure loss of 3.0 mmAq and a filtration efficiency of 99.97%. After removing static electricity by IPA treatment for 24 hours, the pressure loss was 2.9 mmAq, but the filtration efficiency decreased to 38.2%.

The pressure loss of the initial sample 2 was 3.5 mmAq and the filtration efficiency was 99.97%. After removing static electricity by IPA treatment for 24 hours, the pressure loss was 3.4 mmAq, but the filtration efficiency was reduced to 39.9%.

The initial sample 3 had a pressure loss of 3.8 mmAq and a filtration efficiency of 99.98%. After removing static electricity by IPA treatment for 24 hours, the pressure loss was 3.7 mmAq, but the filtration efficiency decreased to 46.8%.

Thereafter, after shaking the samples three times and applying pressure, the TSI 8130 model was applied to measure the performance 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 MB 1 which removed static electricity by IPA treatment for 24 hours was 2.8 mmAq, the filtration efficiency was reduced to 37.5%, and the pressure loss after applying static electricity by shaking three times to apply mechanical pressure It was 2.8mmAq and the filtration efficiency was almost unchanged at 37.6%.

MB 2 removed by static electricity by IPA treatment for 24 hours has a pressure loss of 3.4 mmAq and a filtration efficiency of 39.8%. The pressure loss after applying static electricity by shaking three times to apply mechanical pressure is 3.4 mmAq and the filtration efficiency of 39.8. %.

MB 3 removed by static electricity by IPA treatment for 24 hours has a pressure loss of 1.0 mmAq and a filtration efficiency of 15.1%. The pressure loss after applying static electricity by shaking three times to apply mechanical pressure is 1.0 mmAq and the filtration efficiency is 25.4. There was a slight performance improvement in filtration efficiency in %.

Sample 1, which was removed by static electricity by IPA treatment for 24 hours, had a pressure loss of 2.9 mmAq and a filtration efficiency of 38.2%, and the pressure loss after applying static electricity by shaking three times to apply mechanical pressure was 2.9 mmAq and the filtration efficiency of 38.2 %.

Sample 2 removed by static electricity by IPA treatment for 24 hours had a pressure loss of 3.4 mmAq and a filtration efficiency of 39.9%. The pressure loss after applying static electricity by shaking three times to apply mechanical pressure was 3.4 mmAq and the filtration efficiency of 39.9. %.

Sample 3 removed static electricity by IPA treatment for 24 hours had a pressure loss of 3.7 mmAq and a filtration efficiency of 46.8%, and the pressure loss after applying static electricity by shaking three times to give mechanical pressure was 3.7 mmAq and the filtration efficiency of 67.4 The filtration performance was greatly improved by %.

Thereafter, the samples were subjected to IPA treatment and shaken 10 times to apply pressure, and the TSI 8130 model was applied to measure performance by passing 0.3 μm NaCl through a flow rate of 5.33 cm/s, and the measurement results are shown in Table 3 below. Same as

As shown in [Table 3], the pressure loss of MB 1, which eliminated static electricity by IPA treatment for 24 hours, was 2.8 mmAq, the filtration efficiency was lowered to 37.5%, and the static PVDF melt-blown web electricity was shaken 10 times to apply mechanical pressure. The pressure loss after application of was 2.8 mmAq, and the filtration efficiency was almost unchanged at 37.6%.

MB 2 removed by static electricity by IPA treatment for 24 hours has a pressure loss of 3.4 mmAq and a filtration efficiency of 39.8%, and by applying mechanical pressure by shaking 10 times, the pressure loss after applying static electricity is 3.4 mmAq and the filtration efficiency is 39.8 %.

MB 3 removed by static electricity by IPA treatment for 24 hours has a pressure loss of 1.0 mmAq and a filtration efficiency of 15.1%, and the pressure loss after applying static electricity by applying mechanical pressure by shaking 10 times is 1.0 mmAq and the filtration efficiency of 25.7 There was a slight performance improvement in filtration efficiency in %.

Sample 1, which was removed by static electricity by IPA for 24 hours, had a pressure loss of 2.9 mmAq and a filtration efficiency of 38.2%, and by applying mechanical pressure by shaking 10 times, the pressure loss after applying static electricity was 2.9 mmAq and the filtration efficiency of 38.2 %.

Sample 2 removed by static electricity by IPA treatment for 24 hours has a pressure loss of 3.4 mmAq and a filtration efficiency of 39.9%, and the pressure loss after applying static electricity by applying mechanical pressure by shaking 10 times is 3.4 mmAq and the filtration efficiency of 39.9. %.

Sample 3 removed by static electricity by IPA treatment for 24 hours had a pressure loss of 3.7 mmAq and a filtration efficiency of 46.8%, and the pressure loss after applying static electricity by applying mechanical pressure by shaking 10 times was 3.7 mmAq and the filtration efficiency of 87.4 The filtration performance was greatly improved by %.

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

<Filter performance test>

After installing 0.06m ² of Sample 1, Sample 2, and Sample 3 in different 1m ³ chambers, generating cigarette smoke, and then operating the tester for 30 minutes to have a flow rate of 0.1m/s, the filter performance was improved. It was measured, and the measurement results are shown in [Table 4].

As shown in Table 4, 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 15 cigarette smoke was 3.2 mmAq, and the filtering efficiency was reduced to 61.4%.

The pressure loss of the initial sample 2 was 3.5 mmAq, the filtration efficiency was 99.97%, 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 3.5mmAq, the filtration efficiency was 88.6%, the pressure loss after filtrating 15 cigarettes was 3.6mmAq, and the filtration efficiency was reduced to 62.4%.

The pressure loss of the initial sample 3 was 3.8mmAq, the filtration efficiency was 99.98%, the pressure loss after filtering 5 cigarette smokes was 3.9mmAq, the filtration efficiency was 99.92%, and the pressure loss after filtering 10 cigarette smokes Was 3.9mmAq, the filtration efficiency was 96.8%, the pressure loss after filtrating 15 cigarettes was 3.9mmAq, and the filtration efficiency was reduced to 91.3%.

Filter performance test results In addition, in the case of Sample 3 of the embodiment of the present invention (support-PP melt blown web (MB 1)-PVDF melt blown web (MB 3) laminate), dust was collected from the results of the same filtration. It was confirmed that the electrostatic performance was significantly improved because the static electricity was continuously maintained even after the continuous filtration was performed.

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.

Claims (18)

Consists of a piezoelectric polymer melt-blown web and an electrostatic material melt-blown web mixture,
The piezoelectric polymer melt blown web and the electrostatic material melt blown web mixture,
A material for air purification with improved electrostatic durability, characterized by a mixture of PVDF melt blown web (Poly Vinylidene difluoride melt brown web or Poly Vinylidene fluoride melt brown web) and PP melt blown web (polypropylene melt brown web). According to claim 1, wherein the PVDF melt blown web and PP melt blown web mixture,
The PVDF melt blown web and the PP melt blown web are each formed independently by a melt blown method and then fused and laminated to improve static electricity durability. According to claim 1, The PVDF melt blown web and the PP melt blown web mixture,
The PVDF melt-blown web and the PP melt-blown web is characterized in that the cross-layer construction of one or more electrostatic durability improved air purification material. According to claim 1, The PVDF melt blown web and the PP melt blown web mixture,
Air purification material with improved electrostatic durability, characterized in that PVDF and PP are made of fibrous mixed PVDF and PP mixed melt blown web by simultaneously emitting PVDF and PP materials by the Bico meltbrown method. . According to claim 1,
The PVDF melt-blown web has a weight ratio of 2 to 15 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. According to claim 1,
An air purification material with improved electrostatic durability, characterized in that the average fiber diameter of the PVDF fibers constituting the PVDF melt blown web is 0.6 to 5 μm. According to claim 1,
The PVDF melt-blown web and the PP melt-blown web mixture is supported by being fused; a static electricity durability improved air purification material, characterized in that further comprises a. The method of claim 1, wherein the piezoelectric polymer melt blown web and the electrostatic material melt blown web mixture,
A material for improved electrostatic durability, comprising a transition metal nano powder or a transition metal alloy nano powder therein by mixing the transition metal nano powder or the transition metal alloy nano powder before performing the melt-blow process. Producing a mixture of piezoelectric polymer melt-blown web and electrostatic material melt-blown web;
The piezoelectric polymer melt blown web is PVDF melt blown web (Poly Vinylidene difluoride melt brown web or Poly Vinylidene fluoride melt brown web),
The electrostatic material melt blown web is PP melt blown web (polypropylene melt brown web) characterized in that the electrostatic durability improved air purification material manufacturing method. The method of claim 9,
The PVDF melt-blown web has a weight ratio of 2 to 15 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 9,
The PVDF fiber constituting the PVDF melt-blown web, the average fiber diameter is 0.6 to 5 ㎛ characterized in that the electrostatic durability improved air purification material manufacturing method. 10. The method of claim 9, The step of manufacturing the PVDF melt-blown web and PP melt-blown web mixture,
Preparing an PVDF melt blown web and a PP melt blown web (polypropylene melt brown web) respectively by applying independent melt blown methods, respectively; And
The PVDF melt-blown web and the PP melt-blown web for manufacturing a mixture of the PVDF melt-blown web and the PP melt-blown web fusion laminating; electrostatic durability improved air, characterized in that comprises a How to make purification materials. The method of claim 12, wherein the step of manufacturing the PVDF melt blown web and the PP melt blown web (polypropylene melt brown web) by applying the independent melt blown method, respectively,
The step of performing the melt-blown process by mixing the transition metal nano-powder or the transition metal alloy nano-powder so that each of the PVDF melt-blown web and the PP melt-blown web includes a transition metal nano powder or a transition metal alloy nano powder. Method for producing a material for air purification with improved electrostatic durability. The method of claim 12, wherein the step of fusion laminating the PVDF melt blown web and the PP melt blown web comprises:
A method of manufacturing an air purification material having improved electrostatic durability, wherein the PVDF melt blown web and the PP melt blown web are cross-layered. 10. The method of claim 9, The step of manufacturing the PVDF melt-blown web and PP melt-blown web mixture,
Electrostatic durability, characterized by the step of producing PVDF melt-blown webs and PP melt-blown mixtures in which PVDF and PP are fibrously mixed by simultaneously spinning PVDF and PP materials using the Bico meltbrown method. How to make this improved air purification material. 16. The method of claim 15, wherein the step of manufacturing the PVDF melt blown web and PP melt blown web mixture,
By mixing the PVDF material and the PP material with the transition metal nano powder or the transition metal alloy nano powder so that the PVDF melt blown web and the PP melt blown mixture include a transition metal nano powder or a transition metal alloy nano powder, the bico Method for producing an air purification material with improved electrostatic durability, characterized in that the step of performing a melt-blow method. The method of claim 15,
The PVDF and PP PVDF melt-blown web and PP melt-blown mixture in which the PP is mixed in a fibrous manner, the electrostatic durability improved air purification material manufacturing method characterized in that it is laminated in multiple layers by fusion. The method of claim 9,
Manufacturing a support; And
The piezoelectric polymer melt-blown web and the electrostatic material melt-blown web mixture fusion-supporting step of fusion lamination to the support; electrostatic durability improved air purification material manufacturing method characterized in that further comprises a.

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