JPH08243066A - Cleaning material - Google Patents

Abstract

PURPOSE: To provide a cleaning material capable of cleaning without damaging a matter to be cleaned, charging no static electricity to the matter, and having excellent durability and workability, by covering a part or the whole part of a porous body with an electron conjugate polymer. CONSTITUTION: As a fiber sheet to constitute a cleaning material, there are fabric, knitting and non-woven fabric. The non-woven fabric with the fiber orientation direction in the thickness direction can be obtained by entangling fiber webs, which are obtained by a dry method such as card method, air laid method, etc., a wet method and a direct method such as spun bond method, melt blow method, etc., by mechanical external force such as fluid flow of water, etc., or a needle. To cover a fiber sheet with an electron conjugate polymer, solution containing an oxidizing agent such as ferric chloride (III), cupric chloride (II), etc., is impregnated into the fiber sheet, then the sheet is contacted with the monomer for polymerization. Acetylene, benzene, aniline, phenyl acetylene, indole, and derivatives of these monomer can be used as the monomer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, automobile repair,
Fields that require both polishing and painting, such as automobile manufacturing, automobile plastic parts manufacturing, musical instrument manufacturing, lacquer ware manufacturing, furniture manufacturing, color or monochrome liquid crystal display manufacturing, glass plate manufacturing, compact disk manufacturing, lens manufacturing, film Fields that require only polishing such as manufacturing, fields that require work in a clean room such as drug manufacturing, integrated circuit manufacturing, and semiconductor manufacturing, or electrical equipment such as televisions and audio equipment, tables, desks, and drawers. The present invention relates to a cleaning material suitable for cleaning a place where static electricity is easily generated due to friction with the cleaning material in the field of furniture such as cabinets and chairs, and household products such as windows, doors and floors.

[0002]

2. Description of the Related Art For example, when repairing and painting an automobile, if the dust or mist in the atmosphere adheres to the painted portion, the finish of the coating will be poor. It needs to be cleaned thoroughly. As this cleaning means,
If you use a cleaning material made of ordinary woven fabric or non-woven fabric, you can temporarily clean the coated area, but the friction between the cleaning material and the coated area will generate static electricity, which in turn will cause dust and mist in the atmosphere to adhere. It became easier and was not suitable for practical use. Therefore, generally, after removing the charge with an ion neutralizer, the surface is cleaned with a cloth having a viscosity. However, this cleaning means is a two-step cleaning operation, and it is complicated, The sum machine was expensive.

On the other hand, in the field requiring only polishing, cleaning is performed in a wet state containing a liquid to suppress the generation of static electricity, but it takes a long time to dry or dust generated by polishing is dried. There was a problem such as reattachment.

In addition, furniture, windows, doors, floors, etc.
Even when cleaning with a cleaning material made of normal woven or non-woven fabric, although it can be temporarily cleaned, static electricity is generated due to friction between the cleaning material and the object to be cleaned, and dust or the like tends to adhere to the object to be cleaned. was there. Therefore, a conductive material mixed with carbon black or metal powder, or a cleaning material using a metal-plated conductive fiber is known, but the former has low durability and low fiber strength, and the latter is The object to be cleaned was easily damaged.

Further, even in a field requiring work in a clean room, static electricity is generated due to friction between the cleaning material and the object to be cleaned, dust in the atmosphere is attached to the object to be cleaned, or accumulated due to static electricity. There were problems such as the destruction of circuits and semiconductors.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and does not damage an object to be cleaned,
Moreover, it is an object of the present invention to provide a cleaning material excellent in durability and workability that can be cleaned without being charged with static electricity.

[0007]

In the cleaning material of the present invention, a part or all of the porous material is coated with an electron conjugated polymer.

[0008]

In the cleaning material of the present invention, a part or all of the porous body is coated with the electron-conjugated polymer. Since this electron-conjugated polymer is soft, it does not damage the object to be cleaned. Moreover, since the object to be cleaned can be cleaned and the charge can be removed by corona discharge at the same time, the object to be cleaned can be cleaned without being charged. Further, since the electron conjugated polymer only covers the surface of the porous body and does not deteriorate the strength of the porous body, it is a cleaning material having excellent durability. Furthermore, since the cleaning material of the present invention can be cleaned and discharged by simply wiping, it has excellent workability.

The porous material of the present invention includes, for example, a fiber sheet, a foam, or a composite of these. The fibrous sheet is suitable because it is excellent in static elimination property and durability, and the foam is excellent in lint-free property, so that it can be suitably used in a clean room. Hereinafter, the case where the porous body is a fiber sheet will be described.

The fibers constituting the fiber sheet include, for example, natural fibers such as silk, wool, cotton and hemp, regenerated fibers such as rayon fibers, semi-synthetic fibers such as acetate fibers, polyamide fibers, polyvinyl alcohol fibers, acrylic fibers, Synthetic fibers such as polyester fibers, polyvinylidene chloride fibers, polyvinyl chloride fibers, polyurethane fibers, polyethylene fibers, polypropylene fibers and aromatic polyamide fibers can be used. In addition, by using core-sheath type, side-by-side type, eccentric type composite fibers composed of two or more resin components, and adhering or expressing crimp, strength, abrasion resistance, lint-free property It is possible to impart properties such as bulkiness.

A fine fiber derived from a composite fiber (hereinafter referred to as "fine fiberized fiber") capable of being made into a fine fiber having a fineness of 0.5 denier or less by mechanical and / or chemical treatment is Since it is excellent in static elimination by corona discharge, cleanability of objects to be cleaned, retention of cleaned dust, etc., it is not only less likely to damage the objects to be cleaned, but also excellent in strength. It can be preferably used. As the fine fiber, for example, as shown in FIG. 1, a sea-island type fiber having a cross section in which another component B is arranged in an island shape in one component A, as shown in FIG. A multi-bimetal type fiber having a cross section in which component B is alternately laminated in layers, or a chrysanthemum type fiber having a cross section obtained by dividing one component A by another component B extending from the vicinity of the fiber axis to the fiber surface as shown in FIG. There is. Among these, fine fibers derived from multiple bimetal type fibers and chrysanthemum type fibers have irregular cross-sectional shapes such as a substantially trapezoidal shape and a fan shape, and are more excellent in cleanability, and therefore can be suitably used.

The resin component constituting this fine fiber is 2
Any combination of two or more components may be used, for example, as a combination of two components, for example, polyamide resin and polyester resin, polyamide resin and polyolefin resin, polyester resin and polyolefin resin, polyester resin and polyacrylonitrile. There are combinations of different types of resin components such as resin, polyamide resin and polyacrylonitrile resin, polyolefin resin and polyacrylonitrile resin, or similar resin components such as polypropylene and polyethylene.

The fine fiber derived from such fine fiber is preferably contained in the cleaning material in an amount of 5% by weight or more. The more the fine fiber is, the higher the corona discharge efficiency is and the better the static elimination performance is. It is preferably contained by weight% or more, and most preferably 90% by weight or more.

The cleaning material of the present invention is a fiber sheet made of the above fibers coated with an electron-conjugated polymer. A fiber sheet is formed from fibers coated with an electron-conjugated polymer. Alternatively, the fiber sheet may be formed and then coated with an electron conjugated polymer. In the former case, when forming the fiber sheet,
Since the electron conjugated polymer may be damaged, it is more preferable to coat the electron conjugated polymer after forming the latter fibrous sheet. In the latter case, some fibers may not be completely covered with the electron conjugated polymer. Hereinafter, the case where the cleaning material is formed by forming the fiber sheet and then coating it with the electron-conjugated polymer will be described.

Examples of the fiber sheet constituting the cleaning material of the present invention include woven fabric, knitted fabric and non-woven fabric.
Woven fabrics and knitted fabrics have excellent abrasion resistance, and non-woven fabrics have a number of fiber ends that can participate in corona discharge, and improve the static elimination property by corona discharge by making the fiber orientation direction the thickness direction. And has a three-dimensional void,
This is preferable because dust and the like wiped from the object to be cleaned can be retained in this space. The nonwoven fabric in which the orientation direction of the fibers is the thickness direction is, for example, a fiber web obtained by a dry method such as a card method or an air lay method, a wet method, a direct method such as a spunbond method or a melt blow method, and a fluid such as water. It can be obtained by entanglement with a mechanical external force such as a flow or a needle. Note that, the entanglement with the former fluid flow makes it possible to obtain a non-woven fabric that is more uniform and excellent in strength, and thus is a more preferable method. Further, in the case of forming a fiber web by the card method, if the orientation direction of the fibers includes a crossed fiber web that intersects the length direction of the fiber web, the strength in the width direction is improved and the directionality is reduced. Since it can be cleaned, it is a more preferable orientation direction. This crossed fiber web can be obtained by crossing unidirectional fiber webs with a cross layer or the like.

The non-woven fabric obtained by the melt-blowing method has a small average fiber diameter of 10 μm or less and is easily discharged by corona discharge, so that it can be preferably used. If the synthetic rubber or the elastomer constitutes this non-woven fabric, it has cushioning properties and excellent workability.
It can be preferably used. Examples of the synthetic rubber include styrene-butadiene rubber, butadiene rubber, isoprene rubber, ethylene-propylene copolymer rubber, ethylene-
Propylene-diene copolymer rubber, acrylonitrile-
Butadiene copolymer rubber, chloroprene rubber, butyl rubber, urethane rubber, silicone rubber, multi-flow rubber, hydrogenated nitrile rubber, polyether special rubber, fluorine rubber, 4-fluorinated ethylene-propylene rubber, acrylic rubber, chlorosulfonated There are polyethylene rubber, epichlorohydrin rubber, propylene oxide rubber, ethylene-acrylic rubber, liquid rubber, norbornene rubber, etc.,
As the elastomer, styrene-based, olefin-based, urethane-based, polyester-based, polyamide-based, 1,2-polybutadiene-based, vinyl chloride-based, and fluorine-based thermoplastics can be used alone or in combination. Of these, thermoplastic elastomers are suitable because they are highly elastic and easily obtain fibers with an average fiber diameter of 10 μm or less. Can be used for

When a mechanical external force such as a fluid flow or a needle is applied to the fiber web containing the finely-fiberized fibers such as the multiple bimetal type fibers and the chrysanthemum type fibers described above, the fine fibers are entangled at the same time as the fine fibers are derived. This is a rational method for forming a non-woven fabric that does not require any additional derivative process. Further, since the fine fibers are entangled with each other to form a dense structure, there is also a feature that it is more excellent in retaining dust and the like.

When the cleaning material is made of a non-woven fabric, in order to improve strength, abrasion resistance and lint-free property, a binder such as an emulsion type, a solvent type, a powder type or a non-woven fabric constituent fiber is fused and fixed. Preferably.
By fixing with the binder or the non-woven fabric constituent fibers, it is preferable to fix mainly on one side of the non-woven fabric or mainly inside the non-woven fabric so as not to lower the charge removal property, and the latter is preferable because it can be cleaned regardless of front and back. .
As a fixing method inside the nonwoven fabric, for example, there is a method of heat-treating (preferably after entanglement treatment) a laminated fiber web having a three-layer structure having a fiber web containing heat-fusible fibers as an intermediate layer. In order to further improve abrasion resistance and lint-free property, when partially fixing the nonwoven fabric, the fixed area per piece is 0.01 to ⁵ mm ² , and the total fixed area is the area of the entire nonwoven fabric. It is preferable to be 5 to 50%. This fixing can be performed by either fusion of the binder or the non-woven fabric constituent fibers, but the method of partially fusing with an embossing roll or ultrasonic waves is more lint-free than the case of partially adhering with a binder. It is more preferable because it is expensive.

Next, the fiber sheet is coated with the electron-conjugated polymer. Since the fiber sheet is porous, almost the entire fiber sheet can be coated with the electron-conjugated polymer. Since this electron-conjugated polymer has excellent adhesion to the fiber sheet, it has excellent durability, and also has excellent flexibility, so that it is possible to perform static elimination and cleaning without damaging the object to be cleaned.

In the present invention, the surface resistance of the cleaning material obtained by coating with the electron conjugated polymer is 1 × 1.
It is preferably not more than ⁰⁹ Ω / □. Surface resistance is 1 × 1
If it exceeds ⁰⁹ Ω / □, the static elimination performance will be remarkably deteriorated. Therefore, it is more preferably 1 × 10 ⁶ Ω / □ or less, and most preferably 1 × 10 ⁴ Ω / □ or less.

As a method of coating with this electron-conjugated polymer, for example, a solution containing an oxidizing agent such as iron (III) chloride or copper (II) chloride is impregnated into a fiber sheet, and then the fiber sheet is brought into contact with the monomer for polymerization. There is a way. As a method of contact with the monomer, when the monomer is in a liquid state,
Impregnation and coating of monomer on fiber sheet with oxidizer
Alternatively, spraying may be performed, and when the monomer is in a gas state, the fiber sheet to which the oxidant is attached may be placed in a container filled with the monomer.

Examples of the monomer that constitutes the electron-conjugated polymer include acetylene, benzene, aniline,
Phenylacetylene, pyrrole, furan, thiophene,
Examples include indole and derivatives of these monomers. Among these, pyrrole is excellent in electrical conductivity and polymerizability, and is also excellent in static elimination and durability, and thus can be used particularly preferably.

If the entire fiber sheet is coated with this electron-conjugated polymer, the charge removal property will be more excellent, but the fiber sheet may be partially coated.

The porous body coated with the electron-conjugated polymer of the present invention may be used as a cleaning material as it is, or the porous body may be used as a glove for inserting a hand, an arm cover for inserting an arm, or a leg. It can be used after being processed into a slipper that can be inserted, or can be attached to the cleaning part of the mop for use.

Since the cleaning material of the present invention is excellent in cleanability and static elimination without damaging the object to be cleaned, for example, automobile repair, automobile manufacturing, plastic part manufacturing, musical instrument manufacturing, lacquer ware manufacturing, furniture manufacturing, etc. Fields that require both polishing and painting, color or monochrome liquid crystal display manufacturing, glass plate manufacturing, compact disk manufacturing,
Fields that require only polishing such as lens manufacturing and film manufacturing, fields that require work in a clean room such as pharmaceutical manufacturing, integrated circuit manufacturing, and semiconductor manufacturing, or electrical equipment such as televisions and audio equipment, and tables. Furniture such as desks, chests, cabinets, chairs, windows,
In the field of household products such as doors and floors, it is suitable for cleaning places where static electricity is likely to occur due to friction with a cleaning material.

Examples of the present invention will be described below, but the invention is not limited to the following examples. The surface resistance is calculated by Loresta AP MCP-T400 (Mitsubishi Petrochemical Co., Ltd.).
It is the value measured by (made by).

[0027]

【Example】

Example 1 A chrysanthemum-shaped cross section obtained by dividing a polyester component (A) into eight sections with a polyamide component (B) extending radially from the center of the fiber toward the fiber surface, as shown in FIG. 3 (a). Shaped, fineness 2 denier, fiber length 38
mm fine fiber (fineness of polyester component is 0.
175 denier fine fibers, and a unidirectional fiber web carded with a fineness of 0.075 denier composed of a polyamide component), and crossed fibers obtained by intersecting the unidirectional fiber webs with a cross layer. A web and a web were laminated at a weight ratio of 1: 4 to obtain a laminated fiber web. This laminated fiber web has a diameter of 0.15 mm and a pitch of 0.6 mm.
Water is jetted from the nozzle plate of at a pressure of 95 kg / cm ² to entangle the laminated fiber web, and the basis weight is 85 g / m ² and the thickness is 0.4 mm.
A non-woven fabric was obtained. Then, this non-woven fabric was impregnated with iron (III) chloride at a concentration of 30%, and then the pyrrole solution was brought into contact with evaporated pyrrole monomer gas to polymerize, and the whole non-woven fabric surface was coated with polypyrrole.
I got the cleaning material.

(Example 2) A nonwoven fabric having a basis weight of 85 g / m ² and a thickness of 0.8 mm was prepared in the same manner as in Example 1 except that polyester fiber having a circular cross section, a fineness of 1.5 denier and a fiber length of 38 mm was used. Obtained. Then, in the same manner as in Example 1, the entire surface of the non-woven fabric was coated with polypyrrole to give a surface resistance of 4.1 × 1.
A cleaning material of 0 ² Ω / □ was obtained.

(Example 3) A non-woven fabric obtained in exactly the same manner as in Example 1 was subjected to an embossing roll at a temperature of 185 ° C and a linear pressure of 60 kg / cm (projection area 0.25 mm ² , area occupied by projections on the embossing roll). 16%) and partially fused to obtain a fused nonwoven fabric having a basis weight of 85 g / m ² and a non-fused portion thickness of 0.4 mm. Next, this fused nonwoven fabric was coated with polypyrrole over the entire fused nonwoven fabric in the same manner as in Example 1 to obtain a cleaning material having a surface resistance of 200 Ω / □.

Example 4 A foamed sheet made of urethane resin and having a basis weight of 20 g / m ² and a thickness of 5 mm was coated with polypyrrole in the same manner as in Example 1 to give a surface resistance of 1 × 10 ^4. A cleaning material of Ω / □ was obtained.

Example 5 A polyester elastomer having an average fiber diameter of 5 μm was prepared by the melt blow method.
A nonwoven fabric having a basis weight of 150 g / m ² and a thickness of 0.5 mm was formed. Then, the entire nonwoven fabric was coated with polypyrrole in the same manner as in Example 1 to obtain a cleaning material having a surface resistance of 2 × 10 ² Ω / □.

Comparative Example The nonwoven fabric of Example 1 was used as a cleaning material. The surface resistance of this cleaning material is 6.8 ×
It was 10 ¹² Ω / □.

(Static Electrification Test) After the polyimide film was wiped 5 times with each of the cleaning materials of Examples 1 to 5 and Comparative Example, the electrification voltage of this polyimide film was measured. In addition, this electrification voltage measurement was performed by the friction electrification voltage test device (Kanebo Engineering Co., Ltd., EST-7) based on JIS standard and L1092 reference method. In addition, this measurement was performed under the conditions of a temperature of 20 ° C. and a humidity of 50%. The results are shown in Table 1.

[0034]

[Table 1]

(Abrasion resistance test) With respect to the abrasion resistance of the cleaning materials of Examples 1 to 5 and Comparative Example, a load of 20 g / a was measured by the C method (appearance / retention type tester) according to JIS-L-1076. Rubbing was carried out 20 cm and 230,000 times at cm ² , and visual evaluation was performed, and the static elimination property of the cleaning material after these abrasion resistance tests was tested in the same manner as described above. The results are also shown in Table 1. It can be seen that the cleaning material of the present invention has excellent wear resistance and, even when it is worn to the extent that pilling occurs, it is excellent in static eliminability and therefore has excellent durability. Recognize.

[0036]

EFFECT OF THE INVENTION The cleaning material of the present invention has a porous body partially or wholly coated with an electron-conjugated polymer. Since this electron-conjugated polymer is soft, it may damage an object to be cleaned. Moreover, since the object to be cleaned can be removed at the same time as the object to be cleaned can be discharged by corona discharge, the object to be cleaned can be cleaned without being charged with static electricity. Also,
Since the electron-conjugated polymer only covers the surface of the porous body and does not deteriorate the strength of the porous body, it is a cleaning material having excellent durability. Furthermore, since the cleaning material of the present invention can be cleaned and discharged by simply wiping,
Excellent workability.

[Brief description of drawings]

FIG. 1 is an example of a cross-sectional shape of a composite fiber capable of being made into fine fibers according to the present invention.

[FIG. 2] Another example of the cross-sectional shape of the conjugate fiber capable of being made into fine fibers of the present invention

FIG. 3 (a) Another example of cross-sectional shape of the fine fiber-convertible conjugate fiber of the present invention (b) Another example of cross-sectional shape of the fine fiber-convertible conjugate fiber of the present invention

[Explanation of symbols]

 A one component B other component

Claims (7)

[Claims] 1. A cleaning material, characterized in that a part or all of a porous body is coated with an electron conjugated polymer. 2. The cleaning material according to claim 1, wherein the porous body is a fiber sheet. 3. The fibrous sheet comprises fine fibers derived from fine fiberizable composite fibers.
The listed cleaning material. 4. The cleaning material according to claim 3, wherein the fine fibers derived from the fine fibrous composite fibers have an irregular cross-sectional shape. 5. The cleaning material according to claim 2, wherein the fiber sheet is obtained by a melt blow method. 6. The cleaning material according to any one of claims 2 to 5, wherein the fiber sheet is partially fixed. 7. The cleaning material according to claim 1, wherein the porous body is a foam.