WO2002089990A1

WO2002089990A1 - Resin electrode and electrostatic dust collector using the same

Info

Publication number: WO2002089990A1
Application number: PCT/JP2002/004389
Authority: WO
Inventors: Yuzo Mifune; Sohei Fukada
Original assignee: Midori Anzen Co., Ltd.
Priority date: 2001-05-02
Filing date: 2002-05-02
Publication date: 2002-11-14
Also published as: KR20040034583A; CN1486219A; CN1261227C; KR100868464B1; JP3729403B2; JP2003019444A

Abstract

A resin electrode for use as an electrode being opposed to a discharge electrode, which comprises an electroconductive resin comprising a polyolefin or polyester resin and an electroconductive carbon black incorporated therein; and an electrostatic dust collector using the resin electrode. The resin electrode has satisfactory electric conductivity as an electrode and also is excellent in discharge characteristics and dust collection characteristics.

Description

Description Resin electrode and electrostatic precipitator using the same

The present invention relates to an ionizer section of an electrostatic precipitator, a resin electrode used as a counter electrode of a corona discharge electrode such as a copying machine, a static eliminator, an ozone generator, and a collector section of an electrostatic precipitator. The present invention relates to a dust electrode, and an electrostatic dust collector using an ionizer unit counter electrode and a collector unit dust collecting electrode. Background art

For example, an electrostatic precipitator applies a charge to dust particles in an airflow by corona discharge, etc., and collects and removes the charged particles by electrostatic force while passing through the electric field. Various types are used, from large industrial devices to small household devices.

In such an electrostatic precipitator, a metal material such as aluminum or stainless steel is usually used for a counter electrode of an ionizer section that applies electric charges to dust particles and a dust collection electrode that collects charged particles.

In general, such an electrode is configured such that a counter electrode facing a corner discharge electrode is arranged via a spacer in an ionizer section, and a collector section is similarly connected to a high voltage side for applying a positive or negative potential. The electrodes and the ground electrodes facing the electrodes are alternately arranged in parallel via spacers.

However, when a metal plate is used for the electrode, there is a problem that the electrode itself becomes heavy, although the conductivity is good.

In addition, when a metal plate is used for the electrode, it is necessary to form a plurality of metal plates by lamination through a spacer, and there is a problem that the assembly process is complicated. For this reason, in order to simplify the process of assembling the electrodes, it is conceivable that the electrodes are not formed into a laminated structure but are integrally formed by sheet metal stamping or the like. Can not form a large area electrode Absent. In addition, for example, there is a region in which particles pass without being charged, such as a bent portion, and there is a problem that dust collection performance is reduced.

Furthermore, it is difficult to form electrodes having a complicated shape with electrodes made of a metal plate, resulting in a problem of high cost.

In order to solve such a problem, a technique for forming electrodes with a conductive resin has been developed.

Examples of the conductive resin include, for example, carbon black as the base resin.

, Carbon fiber, conductive whiskers, and stainless steel fibers.

However, conventionally, when carbon black is compounded as a conductive material, it is generally impossible to obtain a low resistance required as a counter electrode unless it is added in a large amount.

It is said that the resin strength is greatly reduced. In general, a resin electrode in which carbon fiber is blended as a conductive material with an ABS resin is used. Since carbon fiber is fibrous, it has the advantage that the required resistance value can be obtained with a smaller amount than the particulate carbon black, but there is a problem that sufficient dust collection performance cannot be obtained.

Therefore, in order to solve such problems, carbon fiber blended A

A proposal has been made in which a water-absorbing polymer is further mixed into a resin electrode made of a BS resin (Japanese Patent Application Laid-Open No. 08-227879).

Such a conductive resin mixed with a water-absorbing polymer has the advantage that the resin surface can always have uniform conductivity, it is easy to conduct, and the amount of carbon fiber kneaded into the resin can be reduced. is there.

However, resin electrodes mixed with a water-absorbing polymer are subject to high temperature and humidity (15 ° C'3

(Above 0%), a resin electrode with good characteristics and performance such as dust collection efficiency and discharge characteristics can be obtained, but the characteristics and performance deteriorate at low temperature humidity (15 ° C.30% or less). There's a problem. Disclosure of the invention

The present invention has sufficient conductivity as an electrode and has excellent discharge characteristics and dust collection characteristics. It is an object of the present invention to provide a resin electrode and an electrostatic dust collector using the same.

As a result of repeated research to achieve the above objective, when carbon fiber is used as a conductive material, conduction does not occur unless the conductive materials are in contact with each other, so that the conductive materials are electrically contacted. However, conductivity cannot be provided unless the fibers are randomly arranged in the resin, but as a result, the resin surface is not uniform microscopically, so that uniform discharge cannot be achieved and dust collection efficiency Was found to decrease. In addition, carbon black has a poor dispersibility and a tendency to cause a decrease in strength with respect to an ABS resin generally used as a conventional resin electrode. However, certain conductive carbon black is uniformly dispersed in a specific resin such as polypropylene, and the surface state tends to be uniform without uneven distribution even when viewed from a microscopic viewpoint. Therefore, they found that good discharge characteristics and dust collection characteristics were obtained, and completed the present invention. The first aspect of the present invention relates to a resin electrode used as a counter electrode of a discharge electrode, wherein the resin electrode is made of a conductive resin obtained by blending conductive carbon black with polyolefin or polyester resin. is there.

In the first embodiment, the conductive carbon black can be dispersed evenly by using polyolefin or polyester resin as the base resin. In addition, since the resin surface is microscopically uniform, uniform discharge characteristics can be obtained, and dust collection characteristics can be improved.

According to a second aspect of the present invention, in the first aspect, the conductive carbon black has a nitrogen specific surface area of 500 m ² Zg or more, and a DBP oil absorption of 200 cm ³ / \ 00. g or more.

In the vigorous second aspect, uniform dispersion is possible with good dispersion in the polyolefin or polyester resin.

A third aspect of the present invention, in the first or second aspect, in the resin electrode, wherein the volume resistivity of not more than the order of 1 0 ⁷ Ω cm.

In the third aspect, a predetermined volume resistivity can be obtained by uniform dispersion of the conductive carbon black.

According to a fourth aspect of the present invention, in any one of the first to third aspects, The resin electrode is used as a counter electrode of the discharge electrode. In the fourth aspect, good dust collection characteristics can be obtained by using the resin electrode as the counter electrode of the positively connected discharge electrode.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the counter electrode of the corona discharge electrode, the collector dust collecting electrode of the electrostatic dust collector, and the ionizer-collector integrated electrostatic dust collector The resin electrode is used as one of an electrode having a function of an ionizer unit counter electrode and a collector unit dust collecting electrode of the apparatus.

In the fifth aspect, by using the resin electrode of the present invention for these electrodes, excellent dust collection characteristics can be obtained.

A sixth aspect of the present invention is an electrostatic precipitator, wherein the resin electrode according to any one of the first to fifth aspects is used as a counter electrode of an ionizer section.

In the sixth aspect, dust collection characteristics can be improved by using a resin electrode having uniform discharge characteristics as the counter electrode.

According to a seventh aspect of the present invention, there is provided the resin electrode according to any one of the first to fifth aspects, wherein the counter electrode of the ionizer section and the dust collecting electrode of the collector section are integrally formed. In the dust device.

In the seventh aspect, by integrally forming the counter electrode and the dust collecting electrode, the manufacturing cost can be significantly reduced, and the dust collecting efficiency can be improved by increasing the dust collecting area. The strength of the electrode can be improved to prevent deformation and the like.

In the present invention, by blending a predetermined conductive carbon black with a polyolefin or a polyester resin, the conductive carbon black can be uniformly dispersed without being unevenly distributed. Since it is extremely uniform, good discharge characteristics and dust collection characteristics can be obtained.

Here, examples of the polyolefin resin include polypropylene (PP) and polyethylene (PE).

Examples of the polyester resin include polybutylene terephthalate (PBT) and polyethylene terephthalate (PET). In such a resin, unlike the ABS resin, the conductive carbon black is uniformly dispersed, and the strength of the resin itself is less reduced. On the other hand, the conductive carbon black is not particularly limited as long as it is uniformly dispersed in these resins and exhibits good conductivity, but the nitrogen specific surface area is 50 Om ² Zg or more, and DBP it is preferred oil absorption amount is ^{2 0 0 cm 3/1 0} 0 g or more. This is presumed to provide good dispersibility and conductivity.

Examples of such conductive carbon black include Ketjen Black (trade name).

The particle size of the conductive carbon black is not particularly limited, but is not more than μπι order, preferably about nm order. Because of having such a particle size, it can be uniformly dispersed in the resin, and can exhibit uniform discharge and good dust collection characteristics.

'Volume resistance ratio of the thus made of a conductive carbon black added resin resin electrode is preferably not more than 1 0 ⁷ Omega cm order. This is to obtain good discharge characteristics and dust collection characteristics.

To form the resin electrode of the present invention, it is necessary to use a resin containing conductive carbon black. To mix the conductive carbon black with the base resin, for example, a mixing roll, a Banbury mixer It can be prepared by melt-mixing in a usual manner using a continuous mixer or the like. In this case, it is preferable to mix the conductive carbon black in an amount of 18% by weight to 30% by weight based on the resin used as the base material. If the amount is less than this, desired conductivity cannot be obtained, and good discharge characteristics and dust collection characteristics cannot be obtained. Also, if the compounding amount is larger than this, the mechanical strength of the conductive resin decreases. In particular, when used as an electrode of an electrostatic precipitator, it is common practice to incorporate a flame retardant as a safety measure.However, adding a flame retardant is more mechanical than simply adding conductive carbon black to the resin. The target strength tends to decrease. If the mechanical strength falls below a certain level at this time, repeated use of the electrode due to cleaning, such as cleaning and assembling work associated with electrode contamination in dust collection and breaking the electrode if no special work is performed, is required. The merit of the characteristic electrostatic dust collector will be lost.

The resin electrode of the present invention can be manufactured by molding using a resin containing conductive carbon black as described above, but the molding method is not particularly limited. Absent. For example, it may be formed by injection molding, press molding or the like. In addition, the resin electrode of the present invention manufactured as described above gives a common potential to the counter electrode of the ionizer section of the electrostatic precipitator and the common electrode to the counter electrode of the ionizer section and the dust collecting electrode of the collector section. The present invention can be applied to an ionizer-collector type electrode and the like. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a schematic diagram showing an example of an electrostatic precipitator according to Embodiment 1 of the present invention. · FIG. 2 is an exploded perspective view showing an example of the electrostatic precipitator according to Embodiment 2 of the present invention.

FIG. 3 is a schematic diagram of FIG.

FIG. 4 is a plan view showing a test method according to Test Example 1 of the present invention.

FIG. 5 is a plan view showing a test method according to Test Example 2 of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the configuration of the present invention will be described in detail.

(Embodiment 1)

FIG. 1 is a schematic diagram showing an outline of an example of an electrostatic dust collector using a resin electrode according to Embodiment 1 of the present invention.

As shown in FIG. 1, in the electrostatic precipitator 1, an ionizer section 10, which is a charging section composed of a discharge electrode 11 and its counter electrode 12, and a discharge electrode 11 are positively connected. In such a case, a non-collecting electrode 21 connected to a relatively positive potential and a collector portion 20 that is a dust collecting portion composed of a dust collecting electrode 22 connected to a relatively negative potential are connected. Have. When the discharge electrode 11 is connected to a negative potential, the non-dust collecting electrode 21 is connected to a relatively negative potential, and the dust collecting electrode 22 is connected to a relatively positive potential. It will be.

In the ionizer section 10, a plurality of flat counter electrodes 12 are arranged in parallel and are electrically connected to each other, and the discharge electrodes 11 are provided between the counter electrodes 12 so as not to be in contact with each other. Is arranged. On the other hand, in the collector section 20, a plurality of flat plate-shaped dust collecting electrodes 22 are arranged in parallel on the downstream side of the ionizer section 10, and a flat plate-shaped non-dust collecting electrode is provided between the respective dust collecting electrodes 22. Electrode 21 is arranged. That is, in the collector section 20, the dust collecting electrodes 22 and the non-dust collecting electrodes 21 are alternately arranged in parallel.

Also, the dust collecting electrode 22 and the non-dust collecting electrode 21 should not be in direct contact. In addition, it is desirable that the non-dust collecting electrode 21 should not be in contact with a frame or a case other than the power supply part. This is because the electrostatic precipitator 1 is indirectly grounded through the surface of an insulator such as a frame or a case, and a potential drop occurs.

As described above, in the present embodiment, the ionizer 10 and the collector 20 are formed by a combination of the discharge electrode 11, the counter electrode 12, the non-dust collecting electrode 21 and the dust collecting electrode 22, and the counter electrode 1 2 and the dust collecting electrode 2 2 volume resistivity formed by 1 0 ⁷ Omega cm or less of the conductive resin material, a non-dust collecting electrode 2 1 a volume resistivity of ^{^{1 0 l fl ~1 0 1 3}} Q cm It is preferable to use a semiconductive resin material.

In the ionizer unit 10 and the collector unit 20 configured as described above, even if the conductive dust is mixed in the dust particles charged by the ionizer unit 10, the electric charge of the non-dust collection electrode 21 is transferred. Is limited by the resistance of the semiconductive resin material, so that spark generation between the non-dust collecting electrode 21 and the dust collecting electrode 22 can be prevented.

By forming the counter electrode 12 of such an electrostatic precipitator 1 from a polyolefin or polyester resin mixed with conductive carbon black, the electrostatic precipitator has excellent discharge characteristics and excellent dust collection characteristics. Dust collector 1 can be used.

Needless to say, the dust collecting electrode 22 may also be made of polyolefin or polyester resin mixed with conductive carbon black.

On the other hand, as the discharge electrode 11, a known wire type or needle type is used as an electrostatic precipitator, and the semiconductive resin material forming the non-precipitate electrode 21 is not particularly limited. Examples thereof include a resin electrode in which a conductive material is mixed in an ABS resin, and a resin electrode in which a water-absorbing resin is further mixed.

In this embodiment, only the dust collecting unit and the charging unit are shown as the electrostatic dust collecting device 1. However, the electrostatic dust collecting device 1 is provided with suction means, air blowing means, etc. for passing air. It is used together with air purification equipment, air conditioning equipment, air conditioning equipment, etc. It is used by being incorporated.

(Embodiment 2)

FIG. 2 is an exploded perspective view of an example of an electrostatic dust collector using a resin electrode according to Embodiment 2 of the present invention, and FIG. 3 is a schematic view thereof.

As shown in FIGS. 2 and 3, the electrostatic precipitator 1A includes an ionizer section 1OA, which is a charging section including a discharge electrode 11A and a counter electrode 12A, and a discharge electrode 1A. Is connected to the positive side, the dust collection electrode 21 A connected to the relatively positive side potential and the dust collection electrode 22 A connected to the relatively negative side potential And a collector section 2 OA. When the discharge electrode 11A is connected to the negative side, the position of each electrode may be set in the same manner as in the first embodiment.

The counter electrode 12 A of the ionizer section 1 OA and the dust collecting electrode 22 A of the collector section 2 OA have a flat plate shape, and are formed on one side of a frame 35 through which air containing dust particles to be collected passes. The counter electrode 12 A is juxtaposed so as to protrude in the airflow direction.On the surface opposite to the frame 35, the dust collection electrode 22 A is arranged in a direction orthogonal to the parallel direction of the counter electrode 12 A. They are juxtaposed and integrally formed.

By integrally forming the counter electrode 12A and the dust collecting electrode 22A in this way, the dust collecting area can be increased, and the collection efficiency of the charged particles can be improved. Wear. In addition, by arranging the counter electrode 12A and the dust collecting electrode 22A in a direction perpendicular to each other, the strength can be increased, and deformation such as warpage and radius deformation of each electrode is prevented. In addition to this, the space between the counter electrode 12 A and the dust collecting electrode 22 A is not required, so that the electrostatic dust collecting device 1 A can be downsized.

The non-collecting electrode 21 A of the collector unit 2 OA can pass through the collecting electrode 22 A, and the dust collecting electrode 22 A and the non-dust collecting electrode 21 A do not contact at equal intervals. It has an opening 25 formed. By inserting the dust collecting electrodes 22 A at equal intervals through the openings 25 of the non-dust collecting electrodes 21 A, the gap between the non-dust collecting electrodes 21 A and the dust collecting electrodes 22 A is increased. A collector portion 2OA capable of applying a uniform electric field is formed.

On the other hand, the discharge electrode 11 A constituting the ionizer section 1 OA is located at a position facing the counter electrode 12 A of the fitting section 13 fitted to the frame section 35, and the counter electrode 12 A is interposed therebetween. It is provided so that it can be inserted. That is, when the fitting part 13 is fitted to the frame part 35, The counter electrode 12 A is inserted and fixed at a uniform interval between the discharge electrodes 11 A provided in the fitting portion 13.

By forming the counter electrode 12 A and the dust collecting electrode 22 A, which are the body of such an electrostatic precipitator 1 A, from a polyolefin or polyester resin blended with conductive carbon black, the discharge characteristics are improved. And the electrostatic dust collector 1A having excellent dust collection characteristics.

(Example 1)

A 10 OmmX26mmX0.8 mm (thickness) resin electrode was formed using a conductive resin in which 30% by weight of Ketjen Black (CB) was mixed as a conductive carbon black with a polypropylene resin. The volume resistivity was between 10 ° and ¹ Ωcm.

(Example 2)

A resin electrode of 10 Omm X 26 mm X 0.8 mm (thickness) was formed by using a conductive resin in which polybutylene terephthalate (PBT) was blended with 20% by weight of a conductive carbon black, that is, a conductive carbon black. Volume resistivity was 10 ³ Ω cm

(Example 3) ''

A resin electrode of 10 OmmX26mmX0.8 mm (thickness) was formed using a conductive resin in which 18% by weight of Ketjen Black (CB) was blended as conductive carbon black with polypropylene resin. The volume resistivity was 10 ⁵ Ωcm.

(Comparative Example 1)

20 weight of carbon fiber (CF) in polybutylene terephthalate (PBT). A resin electrode of 10 OmmX 26mmX 3. Omm (thick) was formed using the conductive resin blended with the / ₀ . The volume resistivity was 10 ³ Ωcm.

(Comparative Example 2)

A 10 OmmX 26mm X 0.8mm (thickness) resin electrode was formed using a conductive resin in which 20% by weight of carbon fiber (CF) and 7% by weight of a water-absorbing resin were mixed with an ABS resin. The volume resistivity was ¹ O 1 ~10 ² Ω cm.

(Comparative Example 3) Ketjen Black as conductive carbon black on polypropylene resin

CB) 15 weight. A resin electrode of 10 OmmX 26 mmX 0.8 mm (thickness) was molded using the conductive resin blended with the _O / ₀ . The volume resistivity was 10 ⁸ Ωcm.

(Test Example 1)

Discharge characteristics were measured using the resin electrodes of Examples 1 to 3 and Comparative Examples 1 to 3 as counter electrodes.

As shown in Fig. 4, the discharge characteristics were measured by placing resin electrodes as counter electrodes 12B in parallel at intervals of 14 mm and placing a very fine discharge electrode 11B made of metal (tungsten) wire at the center. This was performed by measuring the applied voltage at the standard operating point (20 / zm) several times.

The discharge characteristics were evaluated by the ratio of the applied voltage at this time to the measured value of the applied voltage at the metal counter electrode. The results are shown in Table 1 below as values that include variations.

It is preferable that the evaluation criterion satisfy the following expression (1). If the discharge characteristics are out of the standard range, a so-called reverse ionization phenomenon occurs such as the discharge electrode 11 A, which is a metal wire, vibrating or dust particles are hardly charged. It did not function as a dust device.

[Equation 1]

The applied voltage at the counter electrode consisting of a resin electrode.

00 ± 0. 05 (1) Applied voltage at counter electrode

【table 1】

As can be seen from Table 1, with the counter electrode 12B of Examples 1, 2 and 3 in which conductive carbon black was blended with the polyolefin resin or polyester resin, both of them had stable discharge characteristics within the standard. Do you get it. In the counter electrode of Comparative Example 1 in which the polyester resin was blended with carbon fiber, the reverse ionization phenomenon occurred.

In addition, as a result of performing continuous discharge with the electrode of Example 1 under the same conditions as the discharge characteristic measurement test, there was no change in the discharge characteristics even if the discharge was continued for 300 hours, Not occurring (currently ongoing). Positive discharge also produces less ozone due to corona discharge, which is convenient for an electrostatic precipitator.

(Test Example 2)

The surfaces of the resin electrodes of Examples 1, 3 and Comparative Example 1 were observed by SEM. As a result, the surface of the resin electrode of Example 1 was smooth, the conduction state of the surface was confirmed, and carbon black particles could not be observed.However, with the resin electrode of Comparative Example 1, carbon fibers could be observed. The location where carbon fiber exists and the location where it does not It was clearly observed that the conducting part and the non-conducting part could be distinguished.

In Example 3, the surface smoothness and conduction state were the same as in Example 1. Similarly, no carbon black particles could be observed, and no difference in surface observation from Example 1 was observed.

(Test Example 3)

The performance of the counter electrode 12B formed of the resin electrode of Example 1, Example 3, Comparative Example 2, and Comparative Example 3 was evaluated.

The performance evaluation included dust collection efficiency at 15 ° C and 27% RH, SEM observation of surface condition, and discharge efficiency as a molded product when each counter electrode 12 B was incorporated into an electrostatic dust collector. The measurement was performed. The results are shown in Table 2 below.

The dust collection efficiency was measured as shown in FIG. 2 in which the counter electrode 12 B of Example 1 was provided in the throttle section 41 provided substantially in the middle of the duct 40 as shown in FIG. An electrostatic precipitator 1B having the same configuration as that of the electrostatic precipitator 1B is provided, and the particulate matter is sent from one side by the blowing means 50, and the particles and particles before and after passing through the electrostatic precipitator 1B are provided. The amount of the substance was measured.

Specifically, on the side of the duct 40 on the side of the blowing means 50, particles for collecting dust composed of DOP (dioctyl phthalate) are generated by the particle generator 42, and the air volume is 1.3 m ³ Zni in by the blowing means 50. Through the electrostatic precipitator 1B.

At this time, the particle amount (number of particles) before and after passing is measured by the particle sampling port 4 3 and the particle sampling port 4 4 of the duct 40 before and after the dust collection. ).

The particle diameter of the particulate matter generated by the particle generator 42 is 0.3 to 0.5 im, and the amount of particles before dust collection is 150 to 300 particles / L (liter). there were. From these measurement results, the dust collection efficiency was calculated by the following equation (2). The results are shown in Table 2 below.

[Equation 2]

隹 p 鹿 ^^ fr *,

Dust collection efficiency (%) xl 00 (2)

Particle amount before dust collection [Table 2]

As can be seen from Table 2, the resin electrodes of Examples 1 and 3 were stable irrespective of the environmental conditions and exhibited high dust collection performance, whereas the resin electrodes of Comparative Example 2 exhibited low dust collection efficiency at low temperature and humidity. Was unstable, and the numerical value fluctuated beyond the measurement error range for each measurement.

In addition, the dust collecting performance of the resin electrode of Comparative Example 3 was extremely low. It is considered that the dust collection performance did not reach the desired value (for example, 80%) because the absolute amount of the conductive material was insufficient. . Industrial Applicability

As described above, in the present invention, the conductive carbon black is not unevenly distributed by constituting the resin electrode with the conductive resin obtained by mixing the conductive resin black with the polyolefin or the polyester resin as the base resin. Since it is uniformly dispersed and shows conductivity, it is possible to realize a stable and uniform discharge without being affected by environmental conditions, and to improve the dust collection efficiency with an electrostatic precipitator that uses this as a counter electrode. Can be done.

Claims

The scope of the claims

1. A resin electrode used as a counter electrode of a discharge electrode, comprising a conductive resin obtained by blending conductive carbon black with polyolefin or polyester resin.

2. The conductive carbon black according to claim 1, wherein the conductive carbon black has a nitrogen specific surface area of 50 Om ² / g or more and a DBP oil absorption of 200 cm ³ 100 g or more. Resin electrode.

3. In the range 1 or 2 according to the resin electrode, wherein the volume resistivity of the order or less of a 1 0 ⁷ Omega cm.

4. The resin electrode according to any one of claims 1 to 3, wherein the resin electrode is used as a counter electrode of a positively connected discharge electrode.

5. The method according to any one of claims 1 to 4, wherein the counter electrode of the corona discharge electrode, the collector dust collecting electrode of the electrostatic precipitator and the ionizer counter opposing electrode of the ionizer-collector integrated electrostatic precipitator. A resin electrode used as one of the electrodes having the function of a collector dust collecting electrode.

6. An electrostatic precipitator, wherein the resin electrode according to any one of claims 1 to 5 is used as a counter electrode of an ionizer section.

7. An electrostatic precipitator, wherein the resin electrode according to any one of claims 1 to 5, wherein a counter electrode of the ionizer section and a precipitating electrode of the collector section are integrally formed.