CN107163548B - Conductive flocking roller and preparation method thereof - Google Patents
Conductive flocking roller and preparation method thereof Download PDFInfo
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- CN107163548B CN107163548B CN201710419415.6A CN201710419415A CN107163548B CN 107163548 B CN107163548 B CN 107163548B CN 201710419415 A CN201710419415 A CN 201710419415A CN 107163548 B CN107163548 B CN 107163548B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
- G03G21/0058—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using a roller or a polygonal rotating cleaning member; Details thereof, e.g. surface structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
Abstract
The invention relates to a conductive flocking roller and a preparation method thereof. A conductive flocking roller comprises a roller core, a conductive medium layer and conductive fibers which penetrate through the conductive medium layer and are connected with the roller core; the conductive medium layer is formed by curing a conductive medium; the conductive medium comprises the following components in parts by mass: 40-50 parts of polyurethane; 25-55 parts of a solvent; 5-15 parts of superconducting graphite; and 1-5 parts of additive; wherein the solvent is selected from at least one of butyl acetate, ethyl acetate and propyl acetate; the additive is at least one selected from propylene glycol methyl ether acetate, methyl isobutyl ketone and dibasic acid ester. According to the conductive flocking roller and the preparation method thereof, the superconductive graphite has good dispersibility in polyurethane and a solvent, so that the prepared conductive medium layer has low resistance value and good resistance uniformity, and the conductive medium layer has small difference of the resistance value as a whole; the addition of the superconducting graphite has little influence on the bonding performance of polyurethane, ensures the excellent bonding performance of the conductive medium layer and reduces the hair falling condition of the conductive fiber.
Description
Technical Field
The invention relates to parts of office equipment, in particular to a conductive flocking roller and a preparation method thereof.
Background
In the process of working office equipment such as printers and copiers, operations such as toner conveyance, toner cartridge charging, toner cartridge cleaning, and the like are required, and these operations are usually provided with a plurality of functional rollers that are in contact with each other. Flocking rollers with implanted fibers have been used in office equipment after the flocking process has been developed. At present, most of flocking rollers used in the office supplies industry are non-conductive flocking rollers with a cleaning effect, and the requirements for the cleaning effect of such products are gradually improved along with the industry, so that the requirements for conductive flocking rollers are more and more urgent. However, the conductive flocking roller adopted in the industry at present has the problems of uneven conductive resistance and serious hair falling.
Disclosure of Invention
Therefore, it is necessary to provide a conductive flocking roller and a preparation method thereof aiming at the problems of uneven conductive resistance and serious hair falling of the conductive flocking roller adopted in the prior art.
An electrically conductive flocking roller comprising:
a roll core;
the conductive medium layer is coated on the peripheral surface of the roller core; and
the conductive fiber penetrates through the conductive medium layer and is connected to the roller core;
the conductive medium layer is formed by curing a conductive medium, and the conductive medium comprises the following components in parts by mass:
wherein the solvent is selected from at least one of butyl acetate, ethyl acetate and propyl acetate; the additive is at least one selected from propylene glycol methyl ether acetate, methyl isobutyl ketone and dibasic acid ester.
In one embodiment, the particle size of the superconducting graphite is less than 300 μm.
In one embodiment, the conductivity of the superconducting graphite is 5.5-7.
In one embodiment, the roll core is selected from a stainless steel roll core, a stainless iron roll core, or an aluminum roll core.
In one embodiment, the diameter of the roll core is between 4mm and 12 mm.
In one embodiment, the thickness of the conductive medium layer is 0.1mm to 0.4 mm.
In one embodiment, the material of the conductive fibers is selected from at least one of conductive nylon and conductive acrylic.
In one embodiment, the length of the conductive fiber is 0.5mm to 3 mm.
In one embodiment, the conductive fibers have a thickness of 8 to 50 μm.
A preparation method of the conductive flocking roller comprises the following steps:
providing a roll core having a central axis about which the roll core is rotated;
uniformly mixing 40-50 parts of polyurethane, 25-55 parts of solvent, 5-15 parts of superconducting graphite and 1-5 parts of additive to prepare a conductive medium; wherein the solvent is selected from at least one of butyl acetate, ethyl acetate and propyl acetate; the additive is at least one selected from propylene glycol methyl ether acetate, methyl isobutyl ketone and dibasic acid ester;
spraying the conductive medium to the other end of the roller core along one end of the roller core in sequence;
distributing conductive fibers on the peripheral surface of the roller core in an electrostatic flocking mode; and
and curing the conductive medium to form a conductive medium layer.
The conductive flocking roller and the preparation method thereof are characterized in that polyurethane, a solvent, superconducting graphite and an additive are matched according to a certain proportion to obtain a conductive medium, and the conductive medium is solidified on the peripheral surface of a roller core to form a conductive medium layer for fixing conductive fibers on the peripheral surface of the roller core; the prepared conductive medium layer has low resistance value and good resistance uniformity, and the conductive medium layer has small difference of resistance values in the whole view because the superconducting graphite has good dispersibility in polyurethane and a solvent; and the addition of the superconducting graphite has little influence on the bonding performance of polyurethane, so that the excellent bonding performance of the conductive medium layer is ensured, and the hair falling condition of the conductive fiber is reduced.
Drawings
FIG. 1 is a schematic structural view of an embodiment of an electrically conductive flocking roller;
fig. 2 is a process flow diagram of a method for manufacturing the conductive flocking roller according to an embodiment.
Detailed Description
The conductive flocking roller will be described in further detail with reference to the following detailed description and accompanying drawings.
Referring to fig. 1, a conductive flocking roller 100 of an embodiment includes a roller core 110, a conductive medium layer 120 and conductive fibers 130.
In one embodiment, the roll core 110 is an oa (office automation) roll. The roll core 110 is cylindrical. The diameter of the roll core 110 is 4mm to 12 mm. In one embodiment, the roll core 110 is selected from a stainless steel roll core, a stainless iron roll core, or an aluminum roll core. Preferably, the roll core 110 is a conductive roll core; the roll core 110 has a conductivity of 5.5 to 7.
The conductive medium layer 120 is coated on the outer circumferential surface of the roll core 110 and completely covers the outer circumferential surface of the roll core 110. In one embodiment, the thickness of conductive medium layer 120 is 0.1mm to 0.4 mm. Conductive media layer 120 functions to adhere conductive fibers 130 to roll core 110. The conductive medium layer 120 is formed by curing a conductive medium.
In one embodiment, the conductive medium comprises, in parts by mass:
in one embodiment, the polyurethane is a polyether polyurethane. The polyurethane is prepared from methyl isobutyl ketone, propylene glycol methyl ether acetate and dibasic ester mixture (DBE). In one embodiment, the specific gravity of the polyurethane is 0.95 to 1.05. In one embodiment, the polyurethane has a viscosity of 100cps to 400 cps. The viscosity of the conductive medium is also adjusted according to the needs of different situations, and the viscosity of the conductive medium is generally adjusted by adjusting the mass ratio of the polyurethane to the solvent, so that the conductive medium has better processability.
In one embodiment, the solvent is selected from at least one of butyl acetate, ethyl acetate, and propyl acetate. Preferably, the solvent is a mixed solvent of butyl acetate and ethyl acetate. Further, the mass ratio of butyl acetate to ethyl acetate is 2.25-2.55: 1.25-1.55.
In one embodiment, the particle size of the superconducting graphite is less than 300 μm. The conductivity of the superconducting graphite is 5.5-7. The conductivity of the superconducting graphite is more than 2 times smaller than that of the common graphite, and the resistance of the superconducting graphite is smaller and more uniform than that of the common graphite. The superconductive graphite has better dispersibility in polyurethane and solvent, so that the prepared conductive medium layer has low resistance value and good resistance uniformity, and the conductive medium layer has smaller resistance value difference as a whole.
In one embodiment, the additive is selected from at least one of propylene glycol methyl ether acetate, methyl isobutyl ketone, and dibasic ester (DBE).
In one embodiment, the conductive medium comprises, in parts by mass:
in one embodiment, the conductive fibers 130 are connected to the roll core 110 by a conductive media layer 120. In one embodiment, the conductive fibers 130 are uniformly distributed about the outer circumference of the roll core 110. Further, the material of the conductive fiber is selected from at least one of conductive nylon and conductive acrylic. In one embodiment, the conductive fibers have a length of 0.5mm to 3 mm. The thickness of the conductive fiber is 8-50 μm. In one embodiment, the conductive fibers are distributed at a density of 250 fibers/mm on the outer circumferential surface of the roll core 1102550 pieces/mm2。
The conductive fibers penetrate through the conductive medium layer 120 and the root of the conductive fibers is in contact with the roll core 110. In one embodiment, the conductive fibers are planted on the outer circumferential surface of the roll core 110 by electrostatic flocking. The electrostatic flocking method can stably and uniformly distribute the fibers on the surface of the roller core 110, and can uniformly convey carbon powder or clean the carbon powder on the toner cartridge.
The conductive flocking roller is characterized in that polyurethane, a solvent, superconducting graphite and an additive are matched according to a certain proportion to obtain a conductive medium, and the conductive medium is solidified on the peripheral surface of the roller core to form a conductive medium layer for fixing conductive fibers on the peripheral surface of the roller core; the prepared conductive medium layer has low resistance value and good resistance uniformity, and the conductive medium layer has small difference of resistance values in the whole view because the superconducting graphite has good dispersibility in polyurethane and a solvent; and the addition of the superconducting graphite has little influence on the bonding performance of polyurethane, so that the excellent bonding performance of the conductive medium layer is ensured, and the hair falling condition of the conductive fiber is reduced.
Referring to fig. 2, a method for manufacturing a conductive flocking roller according to an embodiment includes the following steps:
s110, providing a roller core, wherein the roller core is provided with a central shaft and rotates around the central shaft.
In one embodiment, the roll core rotates about the central axis at a speed of 80rpm to 120 rpm.
S120, uniformly mixing 40-50 parts of polyurethane, 25-55 parts of solvent, 5-15 parts of superconducting graphite and 1-5 parts of additive to prepare the conductive medium.
In one embodiment, the solvent is selected from at least one of butyl acetate, ethyl acetate, and propyl acetate; the additive is at least one selected from propylene glycol methyl ether acetate, methyl isobutyl ketone and dibasic acid ester (DBE).
And S130, spraying the conductive medium to the other end of the roller core along one end of the roller core in sequence.
In one embodiment, the conductive media are sprayed sequentially along one end of the roll core to the other end of the roll core using a spray gun.
In one embodiment, the conductive medium is sprayed sequentially along one end of the roll core to the other end of the roll core by a spray gun at a running speed of 60mm/s to 70 mm/s.
In one embodiment, the conductive media is sprayed back and forth in sequence along one end of the roll core to the other end of the roll core using a spray gun. Preferably, the spraying is carried out for 4 to 6 times.
And S140, distributing the conductive fibers on the peripheral surface of the roller core in an electrostatic flocking mode.
In one embodiment, the voltage of the electrostatic flocking is 65 KV-85 KV; the electrostatic flocking time is 50-70 s.
S150, curing the conductive medium to form a conductive medium layer.
In one embodiment, the conductive medium is cured by high temperature curing, wherein the curing temperature is 80-160 ℃.
The preparation method of the conductive flocking roller is simple, can be used for batch production of the conductive flocking roller, and is easy to realize industrialization.
The following are descriptions of specific examples, and unless otherwise specified, the following examples contain no other components not specifically mentioned except for inevitable impurities.
Example 1
Providing a roller core, wherein the roller core is a stainless steel roller core, and the diameter of the roller core is 10 mm. Preparing a conductive medium, wherein the conductive medium comprises 40 parts of polyurethane, 25 parts of butyl acetate, 5 parts of superconducting graphite and 1 part of propylene glycol methyl ether acetate; wherein the polyurethane has a specific gravity of 1.005, a viscosity of 100cps, a particle size of 250 μm, and a conductivity of 5.8. The roller core is rotated around the central shaft at the rotating speed of 80rpm, and the conductive medium is sprayed to the other end of the roller core back and forth in sequence along one end of the roller core by a spray gun at the running speed of 60mm/s for 4 rounds, so that the conductive medium is uniformly distributed on the peripheral surface of the roller core. Distributing conductive fibers on the peripheral surface of the roller core in an electrostatic flocking mode, wherein the electrostatic flocking voltage is 65 KV; the electrostatic flocking time is 70s, the used conductive fiber is conductive nylon, the length of the conductive fiber is 0.5mm, and the thickness of the conductive fiber is 8 mu m; the distribution density of the conductive fibers on the peripheral surface of the roller core is 400 pieces/mm2. And curing the conductive medium at 80 ℃ to form a conductive medium layer, wherein the thickness of the conductive medium layer is 0.1 mm.
Example 2
Providing a roller core, wherein the roller core is an aluminum roller core, and the diameter of the roller core is 12 mm. Preparing a conductive medium, wherein the conductive medium comprises 50 parts of polyurethane, 55 parts of butyl acetate, 15 parts of superconducting graphite and 5 parts of propylene glycol methyl ether acetate; wherein the polyurethane has a specific gravity of 0.95, a viscosity of 400cps, a particle size of 300 μm, and a conductivity of 7. The roller core is rotated around the central shaft at the rotating speed of 120rpm, and the conductive medium is sprayed to the other end of the roller core back and forth in sequence along one end of the roller core by a spray gun at the running speed of 70mm/s for 6 rounds, so that the conductive medium is uniformly distributed on the peripheral surface of the roller core. Distributing conductive fibers on the peripheral surface of the roller core in an electrostatic flocking mode, wherein the electrostatic flocking voltage is 85 KV; the electrostatic flocking time is 50s, the used conductive fiber is conductive acrylic fiber, the length of the conductive fiber is 3mm, and the thickness of the conductive fiber is 50 microns; the distribution density of the conductive fibers on the outer peripheral surface of the roller core is 550 pieces/mm2. Curing the conductive medium at 160 deg.CAnd processing to form a conductive medium layer, wherein the thickness of the conductive medium layer is 0.4 mm.
Example 3
Providing a roller core, wherein the roller core is a stainless steel roller core, and the diameter of the roller core is 8 mm. Preparing a conductive medium, wherein the conductive medium comprises 45 parts of polyurethane, 55 parts of butyl acetate, 5 parts of superconducting graphite and 1 part of propylene glycol methyl ether acetate; wherein the polyurethane has a specific gravity of 1.005, a viscosity of 300cps, a particle size of 250 μm, and a conductivity of 5.5. The roller core is rotated around the central shaft at the rotating speed of 100rpm, and the conductive medium is sprayed to the other end of the roller core back and forth along one end of the roller core by a spray gun at the running speed of 65mm/s for 5 rounds, so that the conductive medium is uniformly distributed on the peripheral surface of the roller core. Distributing conductive fibers on the peripheral surface of the roller core in an electrostatic flocking mode, wherein the electrostatic flocking voltage is 75 KV; the electrostatic flocking time is 60s, the used conductive fiber is conductive nylon, the length of the conductive fiber is 2mm, and the thickness of the conductive fiber is 30 micrometers; the distribution density of the conductive fibers on the peripheral surface of the roller core is 250 pieces/mm2. And curing the conductive medium at 100 ℃ to form a conductive medium layer, wherein the thickness of the conductive medium layer is 0.2 mm.
Example 4
Providing a roller core, wherein the roller core is a stainless iron roller core, and the diameter of the roller core is 6 mm. Preparing a conductive medium, wherein the conductive medium comprises 48 parts of polyurethane, 45 parts of butyl acetate, 10 parts of superconducting graphite and 3 parts of propylene glycol methyl ether acetate; wherein the polyurethane has a specific gravity of 1.005, a viscosity of 300cps, a particle size of 250 μm, and a conductivity of 5.8. The roller core is rotated around the central shaft at the rotating speed of 90rpm, and the conductive medium is sprayed to the other end of the roller core back and forth in sequence along one end of the roller core by a spray gun at the running speed of 70mm/s for 4 rounds, so that the conductive medium is uniformly distributed on the peripheral surface of the roller core. Distributing conductive fibers on the peripheral surface of the roller core in an electrostatic flocking mode, wherein the electrostatic flocking voltage is 80 KV; the electrostatic flocking time is 60s, the used conductive fiber is conductive nylon, the length of the conductive fiber is 2mm, and the thickness of the conductive fiber is 30 micrometers; distribution of conductive fibers on the outer peripheral surface of the roll coreThe density is 400 roots/mm2. And curing the conductive medium at 150 ℃ to form a conductive medium layer, wherein the thickness of the conductive medium layer is 0.2 mm.
Example 5
The conductive flocking roller comprises a roller core, a conductive medium layer and conductive fibers, wherein the conductive medium layer is coated on the peripheral surface of the roller core, and the conductive fibers penetrate through the conductive medium layer and are connected to the roller core. The roller core is a stainless steel roller core, and the diameter of the roller core is 8 mm. The thickness of the conductive medium layer is 0.2 mm; the conductive medium forming the conductive medium layer includes 7 parts of epoxy resin, 8 parts of graphite, 6 parts of superconducting carbon black, 3 parts of tetrahydrophthalic anhydride, 2 parts of DMP-30 and 15 parts of ethanol. The conductive fibers are uniformly distributed on the peripheral surface of the roller core 110, the conductive fibers are made of conductive nylon, the length of the conductive fibers is 2mm, and the thickness of the conductive fibers is 30 micrometers; the distribution density of the conductive fibers on the outer circumferential surface of the roll core 110 was 400 fibers/mm2。
The resistance values and the hair removal numbers of the conductive flocking rollers obtained in examples 1 to 5 were measured, and the results are shown in table 1. The resistance value of the conductive flocking roller is obtained by testing a resistance tester of an ADV manufacturer and an R8340 instrument of the type; the hair falling quantity of the conductive flocking roller is the total hair falling quantity of the conductive flocking roller after the conductive flocking roller is used for 24 hours.
TABLE 1
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. An electrically conductive flocking roller comprising:
a roll core;
the conductive medium layer is coated on the peripheral surface of the roller core; and
the conductive fiber penetrates through the conductive medium layer and is connected to the roller core;
the conductive medium layer is formed by curing a conductive medium, and the conductive medium comprises the following substances in parts by mass:
wherein the solvent is selected from at least one of butyl acetate, ethyl acetate and propyl acetate; the additive is at least one selected from propylene glycol methyl ether acetate, methyl isobutyl ketone and dibasic acid ester; the conductivity of the superconducting graphite is 5.5-7, the particle size of the superconducting graphite is smaller than 300 mu m, and the polyurethane is prepared from a mixture of methyl isobutyl ketone, propylene glycol methyl ether acetate and dibasic acid ester.
2. The conductive flocking roller of claim 1 wherein the roller core is selected from a stainless steel roller core, a stainless iron roller core, or an aluminum roller core.
3. The conductive flocking roller as recited in claim 1, wherein the roller core has a diameter of 4mm to 12 mm.
4. The conductive flocking roller as recited in claim 1, wherein the thickness of the conductive medium layer is 0.1mm to 0.4 mm.
5. The conductive flocking roller as recited in claim 1, wherein the material of the conductive fibers is selected from at least one of conductive nylon and conductive acrylic.
6. The conductive flocking roller as recited in claim 1, wherein the conductive fibers have a length of 0.5mm to 3 mm.
7. The conductive flocking roller as recited in claim 1, wherein the conductive fibers have a thickness of 8 to 50 μm.
8. The preparation method of the conductive flocking roller is characterized by comprising the following steps of:
providing a roll core having a central axis about which the roll core is rotated;
uniformly mixing 40-50 parts of polyurethane, 25-55 parts of solvent, 5-15 parts of superconducting graphite and 1-5 parts of additive to prepare a conductive medium; wherein the solvent is selected from at least one of butyl acetate, ethyl acetate and propyl acetate; the additive is at least one selected from propylene glycol methyl ether acetate, methyl isobutyl ketone and dibasic acid ester; the conductivity of the superconducting graphite is 5.5-7, the particle size of the superconducting graphite is less than 300 microns, the conductive medium is composed of polyurethane, a solvent, the superconducting graphite and an additive, and the polyurethane is prepared from a mixture of methyl isobutyl ketone, propylene glycol methyl ether acetate and dibasic acid ester;
spraying the conductive medium to the other end of the roller core along one end of the roller core in sequence;
distributing conductive fibers on the peripheral surface of the roller core in an electrostatic flocking mode; and
and curing the conductive medium to form a conductive medium layer.
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| WO2018223293A1 (en) * | 2017-06-06 | 2018-12-13 | 深圳创怡兴实业有限公司 | Electroconductive flocking roller and preparation method therefor |
| CN109181275A (en) * | 2018-08-09 | 2019-01-11 | 中山市锝力打印机设备有限公司 | A kind of magnetic roller cover material to conduct electricity very well |
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| CN101161726B (en) * | 2007-09-28 | 2010-10-13 | 深圳市科聚新材料有限公司 | Highly-conductive polyphenylene sulfide composite material and method for making same |
| CN101629061B (en) * | 2008-07-14 | 2013-06-05 | 上海新光化工有限公司 | Monocomponent moisture cure urethanes adhesive |
| CN101354553B (en) * | 2008-09-10 | 2011-06-22 | 深圳创怡兴实业有限公司 | Method for producing flocking roller |
| CN101592891A (en) * | 2009-01-05 | 2009-12-02 | 深圳创怡兴实业有限公司 | The flocking roller |
| CN103725046A (en) * | 2012-10-12 | 2014-04-16 | 东丽先端材料研究开发（中国）有限公司 | Graphene dispersion liquid and preparation method thereof |
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