CN103558715B - Friction cloth and rubbing device - Google Patents
Friction cloth and rubbing device Download PDFInfo
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- CN103558715B CN103558715B CN201310561135.0A CN201310561135A CN103558715B CN 103558715 B CN103558715 B CN 103558715B CN 201310561135 A CN201310561135 A CN 201310561135A CN 103558715 B CN103558715 B CN 103558715B
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- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 claims description 3
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- 229910021389 graphene Inorganic materials 0.000 claims description 3
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- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 3
- 229910000480 nickel oxide Inorganic materials 0.000 claims description 3
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- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims description 3
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Landscapes
- Woven Fabrics (AREA)
Abstract
The invention discloses a kind of friction cloth and rubbing device, relate to technical field of liquid crystal display, is the frictional static reduced in friction process and designing.Friction cloth disclosed by the invention, comprises conductive yarn, and wherein, described conductive yarn comprises conductive fiber, and described conductive fiber comprises fibre substrate and is scattered in the conductive agent of described fibre substrate inside.Friction cloth disclosed by the invention and rubbing device are applicable in liquid crystal panel manufacturing process.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to rubbing cloth and a rubbing device.
Background
In the process of manufacturing a liquid crystal panel, alignment grooves need to be formed on alignment films of a TFT (thin film transistor) substrate and a CF (color filter) substrate, respectively, so that when the TFT substrate and the CF substrate are aligned to each other and liquid crystal molecules are injected into the alignment grooves, the liquid crystal molecules can form a pre-tilt angle according to the alignment grooves, and the liquid crystal molecules can be deflected under the action of an electric field.
The alignment grooves are generally formed on the alignment film by a rubbing process, and for example, a rubbing cloth attached to a rubbing roll is used to rapidly rub the surface of the alignment film, thereby forming fine alignment grooves on the alignment film.
In the formation process of the alignment groove, friction static electricity is generated when the rubbing cloth rubs on the surface of the alignment film, and the friction static electricity may cause short circuit of the TFT substrate, thereby damaging the TFT element, causing defects in the TFT substrate and causing poor quality of the liquid crystal panel. In addition, the friction static electricity generated during the friction process also increases the quantity of friction debris, and the friction debris is clamped between the friction cloth and the substrate in the friction process, so that the stress of the substrate is uneven, unnecessary scratches are generated, and the display quality of the liquid crystal panel is reduced.
Disclosure of Invention
The invention mainly aims to provide a rubbing cloth and a rubbing device, which can reduce the friction static electricity in the rubbing process and effectively improve the qualification rate of a liquid crystal panel.
In order to achieve the purpose, the invention adopts the following technical scheme:
in one aspect, the present invention provides a rubbing cloth, including an electrically conductive yarn, the electrically conductive yarn including electrically conductive fibers, the electrically conductive fibers including a fiber matrix and an electrically conductive agent dispersed within the fiber matrix.
Preferably, the conductive agent includes a conductive matrix for conducting electric charges and dispersed particles for dispersing the conductive matrix.
Preferably, the conductive matrix comprises: at least one of carbon nanotubes, nickel nanowires, gold nanowires, silver nanowires, and graphene.
Optionally, the dispersed particles comprise: metal particles and/or metal compound particles.
Optionally, the metal particles include: at least one of gold, silver, copper, iron, tin, zinc, aluminum, manganese, and titanium;
the metal compound fine particles include: at least one of silver oxide, titanium oxide, manganese oxide, zinc oxide, tin oxide, nickel oxide, iron oxide, aluminum oxide, cuprous sulfide, and copper sulfide.
Optionally, the dispersed particles have a particle size of 500nm or less.
Preferably, the particle size of the dispersed particles is less than or equal to 50 nm.
Further, in the conductive fiber, the content of the conductive agent is 5-50 wt.%.
Preferably, the content of the conductive agent in the conductive fiber is 7-20 wt.%.
Further preferably, the content of the conductive agent in the conductive fiber is 10 wt.%.
Optionally, the conductive yarn further comprises non-conductive fibers, and the non-conductive fibers and the conductive fibers are distributed dispersedly.
Further, the rubbing cloth further comprises non-conductive yarns, and the non-conductive yarns comprise non-conductive fibers; the conductive yarns and the non-conductive yarns are distributed in a staggered mode.
Preferably, the electrostatic sequence of the non-conductive fibres is different from the electrostatic sequence of the conductive fibres.
Optionally, in the rubbing cloth, the volume content of the conductive yarn is 15-100%.
On the other hand, the invention also provides a friction device which comprises any one of the friction cloth provided by the technical scheme.
According to the rubbing cloth and the rubbing device provided by the embodiment of the invention, as the conductive yarn in the provided rubbing cloth comprises the conductive fiber, the conductive fiber comprises the fiber matrix and the conductive agent dispersed in the fiber matrix, and the conductive agent can form a conductive channel in the fiber matrix, when the rubbing cloth is rubbed on the surface of the orientation film, the generated friction static electricity can be led out along the conductive channel in the conductive fiber in the conductive yarn, and the friction static electricity is removed through corona discharge, so that the damage of the friction static electricity to a circuit and a TFT element arranged on the orientation film can be effectively reduced; in addition, friction static electricity is reduced, so that friction fragments are reduced, unnecessary scratches caused by the friction fragments are reduced, the qualification rate of the orientation film can be effectively improved, and the display quality of the liquid crystal panel is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of a single conductive fiber in a rubbing cloth according to an embodiment of the present invention;
fig. 2(a) is a schematic view of a rubbing cloth woven by a V-type weaving manner according to an embodiment of the present invention;
fig. 2(b) is a schematic view of a rubbing cloth woven by a W-type weaving manner according to an embodiment of the present invention;
fig. 3 is a schematic diagram of static charges generated when conductive yarns and non-conductive yarns in a rubbing cloth rub against an alignment film according to an embodiment of the present invention;
fig. 4 is a schematic diagram of static charges generated when conductive yarns and non-conductive yarns of another rubbing cloth provided by an embodiment of the present invention rub against an alignment film;
fig. 5 is a schematic view of static charges generated when conductive yarns and non-conductive yarns in another rubbing cloth provided by an embodiment of the present invention rub against an alignment film.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a rubbing cloth which comprises conductive yarns, wherein the conductive yarns comprise conductive fibers, and the conductive fibers comprise a fiber matrix and a conductive agent dispersed in the fiber matrix.
According to the rubbing cloth provided by the embodiment of the invention, as the conductive yarn comprises the conductive fiber, the conductive fiber comprises the fiber matrix and the conductive agent dispersed in the fiber matrix, and the conductive agent can form a conductive channel in the fiber matrix, when the rubbing cloth is rubbed on the surface of the orientation film, generated rubbing static electricity can be led out along the conductive channel in the conductive fiber in the conductive yarn, and the rubbing static electricity is removed through corona discharge, so that the damage of the rubbing static electricity to a circuit and a TFT element arranged on the orientation film can be effectively reduced; in addition, friction static electricity is reduced, so that friction fragments are reduced, unnecessary scratches caused by the friction fragments are reduced, the qualification rate of the orientation film can be effectively improved, and the display quality of the liquid crystal panel is improved.
It is emphasized that in the embodiments of the present invention, the conductive agent is well dispersed in the inside of the fiber matrix at the micrometer or nanometer level, rather than attached to the surface of the fiber matrix in a dispersed form. For example, as shown in fig. 1, which is a schematic cross-sectional view of a single conductive fiber 1 provided by an embodiment of the present invention, the conductive agent 2 is sufficiently dispersed inside the fiber matrix 3 to form a network structure in the fiber matrix 3, so that the conductive fiber 1 becomes a semiconductor or a conductor, thereby performing a conductive function to prevent tribostatic electricity.
In the embodiment of the invention, the conductive yarn is yarn containing conductive fibers, namely yarn formed by spinning the conductive fibers. The conductive fiber for spinning may be a long fiber or a short fiber, which is not limited in the embodiment of the present invention.
The fiber substrate forming the conductive fibers in the above embodiments is a main material for preparing the conductive fibers, and is generally a high polymer fiber, and may generally include a synthetic fiber or a semi-synthetic fiber, such as polypropylene fiber (polypropylene), polyacrylonitrile fiber (acrylic), polyvinyl formal fiber (vinylon), polyamide fiber (cotton), polyethylene terephthalate fiber (polyester), polyvinyl chloride fiber (polyvinyl chloride), acetate fiber, and the like.
The conductive agent forming the conductive fibers in the above embodiments is a composite material, that is, a composite material of a conductive matrix mainly for conducting electric charges and dispersed particles mainly for dispersing the conductive matrix. In the conductive agent, charges are conducted mainly by virtue of the conductive matrix, and when the conductive matrix is compounded with the dispersed particles, the composite material of the conductive matrix and the dispersed particles can be fully dispersed in the fiber matrix under the action of the dispersed particles, so that the conductive performance of the friction cloth is obviously improved.
In the conductive agent, the conductive matrix may be at least one of a carbon nanotube, a nickel nanowire, a gold nanowire, a silver nanowire, and graphene. The conductive substrates have excellent conductivity and mechanical properties, and the friction cloth prepared by using the conductive substrates can effectively improve the conductivity of the friction cloth, can also effectively improve the mechanical properties of the friction cloth, and can further prevent friction debris from being generated in the friction process. It should be noted that the conductive matrix is of a nanometer scale, and in the embodiment of the present invention, specific dimensions (such as diameter or length) and specifications (such as purity) of the conductive matrix are not further limited; of course, the conductive matrix can also be a micron-sized substance, such as carbon fiber or the like.
In the conductive agent, the dispersion particles may be any kind of metal particles or metal compound particles, or a combination of both. For example, the dispersed particles may include metal fine particles having conductivity, so that they may perform not only a dispersing function but also a conductive function, and may further improve the conductive performance of the rubbing cloth, and the metals may include: at least one of gold, silver, copper, iron, tin, zinc, aluminum, manganese, and titanium; of course, the dispersing particles may also include metal compound particles with better stability, so that the metal compound particles can play a role of dispersing and can also improve the service life of the rubbing cloth, and the metal compounds may include: at least one of silver oxide, titanium oxide, manganese oxide, zinc oxide, tin oxide, nickel oxide, iron oxide, aluminum oxide, cuprous sulfide, and copper sulfide; the dispersion particles may include any one or a combination of some of the above-described metal fine particles and metal compound fine particles.
In the embodiment of the present invention, in order to make the dispersed particles perform the dispersing function as much as possible, the particle size of the dispersed particles should not exceed 500nm, and more preferably, the particle size of the dispersed particles should not exceed 50 nm.
Specifically, in the embodiment of the present invention, the conductive agent may be a carbon nanotube/titanium dioxide composite material, wherein the carbon nanotube is a one-dimensional nanomaterial, the tube diameter is not more than 100nm, and since the aspect ratio thereof is greater than 1000, the conductive agent containing the carbon nanotube can form a connected network structure in the fiber matrix, and the carbon nanotube has excellent conductivity and thermal conductivity, so that frictional static electricity, heat and the like generated in the friction process can be rapidly conducted away along the network structure; in addition, the carbon nano tube has very high strength, so that the wear resistance of the friction cloth can be improved, and the generation of friction debris in the friction process can be effectively reduced; the titanium dioxide can greatly improve the dispersion performance of the carbon nano tube, so that the carbon nano tube can be fully dispersed in the fiber matrix in a nano scale, the percolation threshold of the conductive fiber is obviously reduced, namely the conductive fiber with excellent conductivity can be obtained with little conductive agent addition, and the cost for preparing the conductive fiber is obviously reduced. The percolation threshold is a critical value of the content of the conductive agent in the fiber matrix, and when the content of the conductive agent reaches the critical value, the conductivity of the conductive fiber is subjected to mutation type improvement.
In the embodiment of the present invention, the source of the conductive agent is not limited, and the conductive agent can be obtained by a commercially available method, or can be obtained by a preparation method, for example, for the carbon nanotube/titanium dioxide composite material, the preparation method can be a sol-gel method, a sol impregnation method, a mixing method, a chemical vapor method, a physical deposition method, a hydrothermal method, a solvothermal method, a simple mixing method, or the like.
In addition, the microstructure of the conductive agent is not limited in the embodiment of the present invention, for example, the microstructure of the carbon nanotube/titanium dioxide composite material may be a simple mixed state, that is, the carbon nanotube and the titanium dioxide are in a simple mixed state; the coating can be in a coating shape, namely titanium dioxide is adhered to or coated on the surface of the carbon nano tube; the carbon nano tube can also be in a winding shape, namely the carbon nano tube is wound or wrapped on the surface of the titanium dioxide; or a combination of any two or three of the above, and any microstructure may be used as long as the microstructure is a composite of the two.
In the embodiment of the invention, the conductivity of the conductive fibers is increased along with the increase of the content of the conductive agent, but the spinnability of the conductive fibers is reduced along with the increase of the content of the conductive agent, so that the content of the conductive agent is 5-50 wt.% as appropriate under the condition of ensuring the conductivity and spinnability of the conductive fibers; however, when the content of the conductive agent is increased to 20wt.%, the conductivity of the conductive fiber is not obviously improved along with the increase of the content of the conductive agent, and the cost of the conductive agent is high, so that the optimal content of the conductive agent is 7-20 wt.% in consideration of the comprehensive cost and the conductivity; the conductive performance tends to increase as a whole with an increase in the content of the conductive agent, however, when the content of the conductive agent is 10wt.%, the conductive performance suddenly increases, both higher than when the content of the conductive agent is 9wt.% and 11wt.%, and thus, it is further preferable that the content of the conductive agent is 10wt.% in the embodiment of the present invention.
Specifically, the conductive fiber can be formed by a spinning process, which comprises the following steps: the preparation method comprises the steps of fully mixing a fiber matrix precursor and a conductive agent, adding a proper amount of solvent to fully swell the fiber matrix precursor so as to form high-viscosity slurry dispersed with the conductive agent, namely the mixture of the fiber matrix precursor and the conductive agent, heating to dissolve the mixture so as to reduce the viscosity and increase the fluidity, and then obtaining the conductive fiber through a wet spinning process or a dry spinning process. By fibre matrix precursor is meant a substance capable of forming a corresponding fibre matrix, for example, when the fibre matrix is polyvinyl chloride fibre (polyvinyl chloride fibre), the precursor is polyvinyl chloride resin, i.e. polyvinyl chloride fibre (polyvinyl chloride fibre) can be prepared from polyvinyl chloride resin. Further, in order to improve the mechanical properties of the conductive fiber, the conductive fiber obtained by the spinning process needs to be post-treated, and the general process comprises the following steps: and stretching the conductive fiber obtained by the spinning process in a stretching medium by 4-5 times, and then drying to obtain the filamentous conductive fiber.
In the embodiment of the present invention, the rubbing cloth may be woven by a V-type weaving method as shown in fig. 2(a) or a W-type weaving method as shown in fig. 2(b), which is not limited in the embodiment of the present invention.
The friction cloth provided by the embodiment of the invention can be woven by only conductive yarns or by the conductive yarns and the non-conductive yarns, and the conductive yarns and the non-conductive yarns are distributed in a staggered manner. The non-conductive yarn includes non-conductive fibers, and is formed by spinning the non-conductive fibers.
It should be noted that, as shown in fig. 2(a) or fig. 2(b), the rubbing cloth generally includes a base fabric composed of warp and weft yarns and pile yarn portions formed by raising the yarns, and the staggered distribution of the conductive yarns and the non-conductive yarns in the warp and weft yarns of the rubbing cloth in the embodiment of the present invention means the staggered distribution of the conductive yarns and the non-conductive yarns in the pile yarns, and the staggered distribution of the conductive yarns and the non-conductive yarns in the warp and weft yarns.
The density of the staggered distribution of the conductive yarns and the non-conductive yarns in the friction cloth can be adjusted according to actual requirements, for example, every 10 conductive yarns and every 10 non-conductive yarns are sequentially staggered, every 10 conductive yarns and every 5 non-conductive yarns are sequentially staggered, or as shown in fig. 2(a) or fig. 2(b), every 1 conductive yarn 40 and every 1 non-conductive yarn 50 are sequentially staggered as long as the conductive yarns and the non-conductive yarns are distributed in a staggered manner, which is not limited in the embodiment of the present invention.
In the rubbing cloth provided by the embodiment of the invention, the number content of the conductive yarns can be 15-100%, and certainly, the content can also be expressed by volume content, that is, the volume content of the conductive yarns can be 15-100%, and the conductivity of the rubbing cloth is increased along with the increase of the content of the conductive yarns.
It should be noted that, in the embodiment of the present invention, the fiber matrix of the conductive fibers in the conductive yarn is generally high polymer fibers, the main material of the non-conductive fibers in the non-conductive yarn is also generally high polymer fibers, and the selectable types of the high polymer fibers of the non-conductive fibers are the same as the selectable types of the fiber matrix of the conductive fibers.
When the polymer fibers used in the fibrous matrix of the conductive fibers are the same as the polymer fibers used in the non-conductive fibers, the electrostatic sequence of the conductive fibers is the same as the electrostatic sequence of the non-conductive fibers and thus the electrostatic sequence of the conductive yarns is the same as the electrostatic sequence of the non-conductive yarns. The electrostatic sequence is a sequence in which two substances are sequentially arranged according to the polarity of static electricity generated when the two substances rub against each other. According to the electrostatic sequence table, when two substances are rubbed, the substance positioned on the upper part is positively charged, the substance positioned on the lower part is negatively charged, and each substance corresponds to one electrostatic sequence, so that the condition that the conductive fibers and the non-conductive fibers are rubbed with the orientation film can be judged according to the positions of the high polymer fibers of the fiber matrix and the high polymer fibers of the non-conductive fibers in the electrostatic sequence table.
For example, as shown in fig. 3, when the rubbing cloth is rubbed rapidly on the surface of the alignment film 6, since the conductive yarn 41 and the non-conductive yarn 51 have the same electrostatic sequence and thus generate the same electric charge, the electric charge on the non-conductive yarn 51 will be conducted away along the conductive yarn 41, and the electric charge will be removed by corona discharge.
The polymer fibers used in the fibrous matrix of the conductive fibers may also be different from the polymer fibers used in the non-conductive fibers, so that the electrostatic sequence of the conductive fibers is different from the electrostatic sequence of the non-conductive fibers, and thus the electrostatic sequence of the conductive yarns is different from the electrostatic sequence of the non-conductive yarns. It should be noted that the main substance of the alignment film is generally a polyimide resin, which is also a high polymer and thus also has an electrostatic sequence. The electrostatic sequence of the conductive yarn is different from that of the non-conductive yarn, and can be divided into two cases, one is that the electrostatic sequences of the conductive yarn and the non-conductive yarn are higher or lower than that of the orientation film, and the other is that the electrostatic sequences of the conductive yarn and the non-conductive yarn are respectively positioned at two sides of the electrostatic sequences of the orientation film.
When the static sequences of the conductive yarns and the non-conductive yarns are higher or lower than the static sequences of the orientation film, the conductive yarns and the non-conductive yarns generate the same charges when the friction cloth rapidly rubs on the surface of the orientation film, and a certain amount of opposite charges are generated between the conductive yarns and the non-conductive yarns while the conductive yarns and the non-conductive yarns rub. For example, as shown in fig. 4, when the electrostatic sequence of the conductive yarn 42 and the non-conductive yarn 52 is higher than that of the alignment film 6, and the electrostatic sequence of the conductive yarn 42 is higher than that of the non-conductive yarn 52, when the rubbing cloth rapidly rubs on the surface of the alignment film 6, the conductive yarn 42 and the non-conductive yarn 52 of the rubbing cloth are positively charged and the alignment film 6 is negatively charged, and meanwhile, friction is generated between the conductive yarn 42 and the non-conductive yarn 52 of the rubbing cloth during rubbing, and a certain amount of opposite charges are generated between the two, so that the conductive yarn 42 is positively charged and the non-conductive yarn 52 is negatively charged, the negative charges generated by the non-conductive yarn 52 neutralize a part of the positive charges generated during rubbing with the alignment film 6, and after neutralization, the positive charges of the conductive yarn 42 and the remaining positive charges of the non-conductive yarn 52 are conducted away along the conductive yarn 42, the charge is removed by corona discharge.
When the static sequence of the conductive yarn and the static sequence of the non-conductive yarn are respectively positioned at two sides of the static sequence of the orientation film, and the friction cloth quickly rubs on the surface of the orientation film, the conductive yarn and the non-conductive yarn respectively generate opposite charges, the conductive yarn and the non-conductive yarn have neutralization effect, and the residual small amount of charges are conducted away along the conductive yarn. For example, as shown in fig. 5, when the electrostatic sequence of the conductive yarn 43 is higher than that of the alignment film 6 and the electrostatic sequence of the alignment film 6 is higher than that of the non-conductive yarn 53, when the rubbing cloth is rapidly rubbed on the surface of the alignment film 6, the conductive yarn 43 is positively charged and the non-conductive yarn 53 is negatively charged, the two will be neutralized, and the remaining small amount of charge will be conducted away along the conductive yarn 43. Meanwhile, it should be noted that opposite charges are also generated in the alignment film 6 at the positions where the conductive yarns 43 and the non-conductive yarns 53 rub, respectively, and neutralization of the charges can also occur, thereby also reducing the rubbing static electricity on the alignment film 6.
Therefore, preferably, the rubbing cloth has different electrostatic sequences of the high polymer fibers of the fiber matrix in the conductive fibers and different electrostatic sequences of the high polymer fibers of the non-conductive fibers on both sides of the electrostatic sequences of the orientation film, and the conductive yarns and the non-conductive yarns are staggered in sequence in the rubbing cloth, that is, the non-conductive yarns are arranged around each conductive yarn, and the conductive yarns are arranged around each non-conductive yarn.
It should be noted that, in other embodiments of the present invention, the provided conductive yarn may include non-conductive fibers in addition to the conductive fibers, and the conductive fibers and the non-conductive fibers are distributed dispersedly, that is, the yarn is formed by a hybrid spinning process of the conductive fibers and the non-conductive fibers. The polymer fibers of the fiber matrix in the conductive fibers and the polymer fibers of the non-conductive fibers may also be selected in the same manner as the polymer fibers of the fiber matrix in the conductive fibers and the polymer fibers of the non-conductive fibers described above, and the knitting manner of the rubbing cloth may also be the same as the knitting manner of the rubbing cloth described above, and the above technical effects can also be achieved, and thus, details are not described here.
In the embodiment of the present invention, in consideration of the overall performance of the rubbing cloth, the conductive fibers and the non-conductive fibers may further include a small amount of additives, for example, at least one of a flame retardant, a lubricant, a shrinking agent, an antioxidant, an optical brightener, a blocking agent, and a heat-resistant agent may be added, which is not limited in the embodiment of the present invention.
Correspondingly, the invention also provides a preparation method of the rubbing cloth, which is used for preparing the rubbing cloth and comprises the following steps:
s1, preparing conductive fibers, wherein the conductive fibers comprise a fiber matrix and a conductive agent dispersed in the fiber matrix;
s2, preparing conductive yarns, wherein the conductive yarns comprise conductive fibers;
and S3, weaving friction cloth, wherein the friction cloth comprises conductive yarns.
According to the preparation method of the rubbing cloth provided by the embodiment of the invention, any one of the rubbing cloths can be prepared, and as the conductive yarns in the rubbing cloth comprise the conductive fibers, the conductive fibers comprise the fiber matrix and the conductive agent dispersed in the fiber matrix, and the conductive agent can form a conductive channel in the fiber matrix, when the rubbing cloth is rubbed on the surface of the orientation film, the generated friction static electricity can be led out along the conductive channel in the conductive fibers in the conductive yarns, and the friction static electricity is removed through corona discharge, so that the damage of the friction static electricity to circuits and TFT elements arranged on the orientation film can be effectively reduced; in addition, friction static electricity is reduced, so that friction scraps are reduced, unnecessary scratches caused by the friction scraps are reduced, the qualification rate of the orientation film can be effectively improved, and the quality of the liquid crystal panel is improved.
Specifically, the step S1 of preparing the conductive fiber may specifically include the following steps:
s11, providing a fiber matrix precursor and a conductive agent;
s12, mixing the fiber matrix precursor with a conductive agent to form a mixture of the fiber matrix precursor and the conductive agent;
and S13, forming the conductive fiber by the mixture of the fiber matrix precursor and the conductive agent through a spinning process.
In consideration of the overall properties of the rubbing-cloth, the conductive fiber may further include a small amount of additives, for example, at least one of a flame retardant, a lubricant, a shrinking agent, an antioxidant, an optical brightener, a blocking agent, and a heat-resistant agent may be added, and for the preparation method of such a conductive fiber, specifically, there may be:
s11', providing a fiber matrix precursor and a conductive agent, and an additive;
s12', mixing the fiber matrix precursor with a conductive agent, and an additive to form a mixture of the fiber matrix precursor, the conductive agent, and the additive;
s13', forming the conductive fiber by spinning the mixture of the fiber matrix precursor and the conductive agent and the additive.
Specifically, the step S2 of preparing the conductive yarn may specifically include the following two ways:
s21, forming the conductive yarn by the conductive fiber through a spinning process; or,
s21', the conductive fibers and the non-conductive fibers are formed together into a conductive yarn through a spinning process.
Specifically, the step S3 of weaving the rubbing cloth may specifically include the following two ways:
s31, weaving the friction cloth by using conductive yarns; or,
s31', weaving a rubbing cloth using conductive yarns and non-conductive yarns, the conductive yarns being interlaced with the non-conductive yarns.
In another aspect, the present invention also provides a rubbing device including any one of the rubbing cloths described in the above embodiments. Therefore, the technical effects of the rubbing cloth can be achieved, and the detailed description is omitted. Specifically, the rubbing device may include a rubbing roller and a rubbing cloth attached to the rubbing roller.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (15)
1. A rubbing cloth comprising electrically conductive yarns, wherein the electrically conductive yarns comprise electrically conductive fibers, each of the electrically conductive fibers comprising a fiber matrix and an electrically conductive agent dispersed in the fiber matrix in a network structure.
2. The rubbing cloth of claim 1, wherein the conductive agent comprises a conductive matrix for conducting an electric charge and dispersed particles for dispersing the conductive matrix.
3. The rubbing cloth of claim 2, wherein the electrically conductive substrate comprises: at least one of carbon nanotubes, nickel nanowires, gold nanowires, silver nanowires, and graphene.
4. The rubbing cloth according to claim 2, wherein the dispersed particles comprise: metal particles and/or metal compound particles.
5. The rubbing cloth of claim 4,
the metal fine particles include: at least one of gold, silver, copper, iron, tin, zinc, aluminum, manganese, and titanium;
the metal compound fine particles include: at least one of silver oxide, titanium oxide, manganese oxide, zinc oxide, tin oxide, nickel oxide, iron oxide, aluminum oxide, cuprous sulfide, and copper sulfide.
6. The rubbing cloth according to claim 4, wherein the dispersed particles have a particle size of 500nm or less.
7. The rubbing cloth according to claim 6, wherein the dispersed particles have a particle size of 50nm or less.
8. The rubbing cloth according to any one of claims 1 to 7, wherein the content of the conductive agent in the conductive fibers is 5 to 50 wt.%.
9. The rubbing cloth according to claim 8, wherein the conductive agent is contained in the conductive fibers in an amount of 7 to 20 wt.%.
10. The rubbing cloth according to claim 9, wherein the content of the conductive agent in the conductive fibers is 10 wt.%.
11. The rubbing cloth of any one of claims 1 to 7, wherein the conductive yarn further comprises non-conductive fibers, and the non-conductive fibers and the conductive fibers are dispersed.
12. The rubbing cloth of any one of claims 1 to 7, further comprising non-conductive yarns comprising non-conductive fibers; the conductive yarns and the non-conductive yarns are distributed in a staggered mode.
13. The rubbing cloth of claim 12, wherein the electrostatic sequence of the non-conductive fibers is different from the electrostatic sequence of the conductive fibers.
14. The rubbing cloth according to claim 12, wherein the conductive yarn is contained in an amount of 15 to 100% by volume in the rubbing cloth.
15. A rubbing device comprising the rubbing cloth according to any one of claims 1 to 14.
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| CN201310561135.0A CN103558715B (en) | 2013-11-12 | 2013-11-12 | Friction cloth and rubbing device |
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| CN201310561135.0A CN103558715B (en) | 2013-11-12 | 2013-11-12 | Friction cloth and rubbing device |
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| KR20170068687A (en) * | 2015-12-09 | 2017-06-20 | 삼성디스플레이 주식회사 | Liquid crystal display and method for manufacturing the same |
| CN105807501B (en) * | 2016-06-03 | 2018-07-06 | 京东方科技集团股份有限公司 | Friction cloth and preparation method thereof, friction roller, friction roller pressure detection method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07191321A (en) * | 1993-12-27 | 1995-07-28 | Matsushita Electric Ind Co Ltd | Manufacture of rubbing cloth and liquid crystal panel |
| JPH11249139A (en) * | 1998-02-27 | 1999-09-17 | Kyocera Corp | Rubbing cloth and liquid crystal display device |
| CN1550831A (en) * | 2003-05-15 | 2004-12-01 | 林天连布有限公司 | Friction cloth for manufacturing liquid crystal board |
| JP2007232938A (en) * | 2006-02-28 | 2007-09-13 | Gurabitei:Kk | Rubbing cloth |
| CN101611344A (en) * | 2006-11-07 | 2009-12-23 | 可乐丽贸易有限公司 | Friction cloth |
| CN101681066A (en) * | 2007-06-06 | 2010-03-24 | 东丽株式会社 | Rubbing cloth |
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2013
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07191321A (en) * | 1993-12-27 | 1995-07-28 | Matsushita Electric Ind Co Ltd | Manufacture of rubbing cloth and liquid crystal panel |
| JPH11249139A (en) * | 1998-02-27 | 1999-09-17 | Kyocera Corp | Rubbing cloth and liquid crystal display device |
| CN1550831A (en) * | 2003-05-15 | 2004-12-01 | 林天连布有限公司 | Friction cloth for manufacturing liquid crystal board |
| JP2007232938A (en) * | 2006-02-28 | 2007-09-13 | Gurabitei:Kk | Rubbing cloth |
| CN101611344A (en) * | 2006-11-07 | 2009-12-23 | 可乐丽贸易有限公司 | Friction cloth |
| CN101681066A (en) * | 2007-06-06 | 2010-03-24 | 东丽株式会社 | Rubbing cloth |
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