CN106519769B - Conductive coating and laser printer rubber roller preparation method - Google Patents

Conductive coating and laser printer rubber roller preparation method Download PDF

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CN106519769B
CN106519769B CN201610955509.0A CN201610955509A CN106519769B CN 106519769 B CN106519769 B CN 106519769B CN 201610955509 A CN201610955509 A CN 201610955509A CN 106519769 B CN106519769 B CN 106519769B
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silane
dielectric material
resin
conductive coating
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CN106519769A (en
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徐秀茹
孟鸿
袁星
羊辉
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SHENZHEN LEPUTAI TECHNOLOGY CO LTD
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SHENZHEN LEPUTAI TECHNOLOGY Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04—Polysiloxanes
    • C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/24—Electrically-conducting paints
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
    • 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
    • C08K2201/011—Nanostructured additives

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

A kind of conductive coating, the raw material including following weight parts: 100-300 parts of water-base resin, 0.01-12 parts of high dielectric material, 0.05-15 parts of conductive filler, 1-20 parts of functional aid, 0.001-1 parts of pH adjusting agent.The present invention also provides the laser printer rubber roller preparation methods with above-mentioned conductive coating: above-mentioned composition is at the uniform velocity stirred with the revolving speed of 1000-1500rpm in addition to ph adjusters, it is mixed after being adjusted after filtering by pH adjusting agent with 1-10 parts of curing agent, it is sprayed on roll surfaces again, 200nm-30 μm of coating thickness；30-120min is finally toasted at a temperature of 80 DEG C -150 DEG C.The present invention can be widely used in all kinds of laser printers, and stable system and material homogeneity height do not settle, and wear-resisting, preparation process is simple, be capable of providing more stable higher-quality rough sketch output, while meeting the requirement printed to durability.

Description

Conductive coating and laser printer rubber roller preparation method
[technical field]
The present invention relates to printer technology field more particularly to a kind of conductive coating and with the laser of the conductive coating Printer rubber roller preparation method.
[background technique]
The developing process of laser printer is mainly " electrostatic latent image " that photoconductor surface is formed, by showing Ink powder image, and this work is mainly completed by developer roll, effect is that electrostatic latent image is become to visual picture, and development is to utilize What the principle that homophilic charge is repelled each other between substance, the charges of different polarity are attracting was completed.It is to be filled to toner cartridge in printout preliminary stage Electric process is charged by charging roller to toner cartridge surface, so that toner cartridge accurately can carry out carbon dust according to the information of input Absorption.Then the laser beam with data information is irradiated to toner cartridge surface and is exposed to light-guide material, in developing process Developer and stirrer combination work, become visible carbon powder image for electrostatic latent image, then the carbon dust figure on toner cartridge is transferred to In plain paper, the carbon dust being adsorbed on paper is finally permanently affixed at the fixing on paper, that is, it is aobvious to complete a complete printing Shadow process.During the output of entire laser printer, charging roller and the excellent performance of developer roll are to ensure that high quality output One of key factor.
In the use process of daily laser printer, the most common problem is different clear writing degree, paper jam, paper The problems such as overlapping, black flour.Reason of searching to the bottom be laser printer charging roller high speed operation operating when and paper friction The accumulation of a large amount of electrostatic charge can be generated, directly will affect the one or more steps such as development, transfer, fixing, so as to cause The appearance of the above problem.Image so to complete required high quality, it is necessary to meet developer roll, required electricity on charging roller band Amount, then systematically complete development, transfer, fixing and etc..
Charging roller and developer roll at present on the market is mainly improved laser printer by addition various types of filler and exports matter Amount, and to also hoped while the completion of its output performance solve laser printer charging roller and developer roll the high life, it is wear-resisting, Uniform etc. the problem of stable system, material.Document CN102385288A disclosed in Patent Office of the People's Republic of China, It is conductive filler that CN103289547A, which mainly passes through addition or mixtures thereof carbon black or graphite in the coating,.Patent document CN103911060A is then to prepare low resistance wear-resistant coating by addition conductive polyurethane agent.The study found that above-mentioned patent is only led to Individually addition conductive filler is crossed, although can ensure that volume resistance in the reasonable scope, still not can solve laser printer The output problem of rough sketch high quality after long-term work.Patent document CN101533243A mainly pass through the highly conductive carbon black of addition and Metal oxide composed by low conductive black and titanium oxide, aluminium oxide and silica.Patent document CN103911060A It is by preparing low resistance wear-resistant coating by addition silica flour, conductive polyurethane agent in the coating.Above-mentioned related patents are logical Cross addition SiO2、Al2O3、TiO2On the one hand equal fillers have the advantage that roll surfaces roughness increases, wearability improves that allows, another The upper powder amount of rubber roller carbon dust can be improved in aspect, so as to improve printout.But durability experiment is the results show that more than by addition Inorganic dielectric filler, it is unobvious in the effect for improving rough sketch output quality, and without the inorganic filler of modification in length Phase will appear that system homogeneity is lower, the problems such as settling in placing, and seriously affect the performance of material itself.
[summary of the invention]
The purpose of the present invention is to provide one kind to be used for laser printer rubber roller conductive coating, it is intended to solve in the prior art The accumulation of a large amount of electrostatic charge is generated with paper friction when the long-term high speed operation of laser printer rubber roller operates and influences to print Machine rough sketch exports the problem of quality.
Conductive coating provided by the invention, the raw material including following weight parts: 100-300 parts of water-base resin, Gao Jie electricity material Expect 0.01-12 parts, 0.05-15 parts of conductive filler, 1-20 parts of functional aid, 0.001-1 parts of pH adjusting agent；The high dielectric material Material is the inorganic high-dielectric material of organic high-dielectric material or/and modification, and is micro Nano material, the ruler of the high dielectric material Very little is 1nm-30 μm.
The present invention also provides the methods for preparing laser printer rubber roller using above-mentioned conductive coating, comprising the following steps:
By 100-300 parts of water-base resin, 0.01-12 parts of high dielectric material, 0.05-15 parts of conductive filler, water 200-400 Part, 1-20 parts of functional aid mixing, are at the uniform velocity stirred with the revolving speed of 1000-1500rpm, are filtered, obtain coating major ingredient；
PH adjusting agent will be added in coating major ingredient, adjust pH scope control in 7-10；
The coating major ingredient prepared and curing agent 1-10 parts are at the uniform velocity stirred after being sufficiently mixed, is sprayed by automatic spray gun The roll surfaces for having already passed through standardization processing are coated in, coating thickness is between 200nm-30 μm；
The rubber roller sprayed to be placed in baking oven and is dried, oven temperature is 80 DEG C -150 DEG C, baking time 30-120min, Obtain laser printer rubber roller.
Compared with prior art, the present invention passes through addition organic high-dielectric micro Nano material or/and inorganic modified high dielectric Micro Nano material and conductive filler are improving roll surfaces roughness, are improving wearability and raising as rubber roller conductive coating The upper powder amount of rubber roller carbon dust, while improve printout, rubber roller also have superior performance, stable system, simple process, It is wear-resisting, do not settle and the features such as compatibility is good, be capable of providing more stable, the higher rough sketch output of quality, it is ensured that good to beat Print effect.
[specific embodiment]
Purpose to realize the present invention, the present invention is described in further detail with reference to embodiments.It should be appreciated that this Locate described specific embodiment, is used only for explaining the present invention, be not intended to limit the present invention.
The present invention provides a kind of laser printer rubber roller conductive coatings, the combination that the raw material including following weight parts is constituted Object: 100-300 parts of water-base resin, 0.01-12 parts of high dielectric material, 0.05-15 parts of conductive filler, 1-20 parts of functional aid, 0.001-1 parts of pH adjusting agent.
In above-mentioned composition, the water-base resin is aqueous epoxy resins, water-compatible amino resin, aqueous polyester resin, water Property phenolic resin, water-based acrylic resin, waterborne organic silicon resin, aqueous organic fluorine, aqueous organic fluorinated silicone resin or water At least one of property polyurethane.Above-mentioned material and rubber roller have stronger adhesive force, the film corrosion resistance performance after solidification Excellent, film shrinks that small, hardness is high, wearability is good, corrosion resistance, electrical insulation properties are excellent.
In above-mentioned composition, the high dielectric material is the inorganic high-dielectric material of organic high-dielectric material or/and modification.
Wherein, the high dielectric material is micro Nano material, and material structure is micro-and nano-particles, micro-nano mitron, micro-nano Rice noodles, micro nanometer fiber, micro-nano ball (solid, hollow or porous micro-nano ball structure can be divided into), the high dielectric material size At 1nm-30 μm, preferably 500nm-10 μm, size is between 1nm-30 μm.
Specifically, the organic high-dielectric material can be selected polytetrafluoroethylene (PTFE), tetrafluoraoethylene-hexafluoropropylene copolymer, Poly(4-methyl-1-pentene), polypropylene, polytrifluorochloroethylene, low density polyethylene (LDPE), high density polyethylene (HDPE), ABS resin, polyphenyl second Alkene, ethene-vinyl acetate copolymer, polyphenylene oxide, silicone resin, polycarbonate, ethyl cellulose, polyester, polyvinyl chloride, poly- methyl Methyl acrylate, polyimides, epoxy resin, polyformaldehyde, nylon 6, nylon66 fiber, Vingon, phenolic resin, nitrocellulose Element, Kynoar, cyanoethyl be Prussian blue or polyvinylpyrrolidone, and the copolymer containing above-mentioned molecule segment in one The mixing of kind or different materials.
Specifically, the inorganic high-dielectric material of the modification need to first pass through silane coupling agent or amine treatment fluid carries out Modified pretreatment, then makes an addition in above-mentioned coating composition again.
Specifically, the inorganic high-dielectric material selection Ta2O5、TiO2、HfO2、(Ba,Sr)TiO3、(Ba,Zr)TiO3、 BaTiO3、ZrO2、HfO2/Si3N4One of.
Specifically, the silane coupling agent is positive octadecyl trichlorosilane alkane, hexadecane base trichlorosilane, n-tetradecane Base trichlorosilane, n-octadecane base trichlorosilane, n-octadecane base silicofluoroform, n-hexadecyl silicofluoroform, n-tetradecane Base silicofluoroform, γ-chloropropyl trichloro-silane, γ-chloropropyl dichlorosilane, γ-r-chloropropyl trimethoxyl silane, γ- Chloropropyl triethoxysilane, chloromethyl triethoxysilane, gamma-aminopropyl-triethoxy-silane, γ-aminopropyl trimethoxy Silane, γ-(β-aminoethyl) aminopropyl trimethoxysilane, γ-urea propyl-triethoxysilicane, anilinomethyl triethoxysilicane Alkane, anilinomethyl trimethoxy silane, γ-(the third oxygen of 2,3- epoxy) propyl trimethoxy silicane, γ-(the third oxygen of 2,3- epoxy) third Ethyl triethoxy silicane alkane, γ-(the third oxygen of 2,3- epoxy) hydroxypropyl methyl dimethoxysilane, β-(3,4- epoxycyclohexyl) ethyl three Methoxy silane, gamma-methyl allyl acyloxypropyl trichlorosilane, gamma-methyl allyl acyloxypropyl trimethoxysilane, γ-first Base acryloxypropyl methyldiethoxysilane, gamma-methyl allyl acyloxypropyl methyl dimethoxysilane, γ-mercapto propyl Trimethoxy silane, gamma-mercaptopropyltriethoxysilane, double-(tri- ethoxy silicon propyl of 3-) tetrasulfide, double-(tri- ethoxy silicon of 3- Propyl) disulphide, vinyl trichlorosilane, vinyltriethoxysilane, vinyltrimethoxysilane, vinyl three (2- methoxyethoxy) silane, vinyltriacetoxy silane, three tert-butyl peroxide silane of vinyl, vinyl methyl two Chlorosilane, β-cyanoethyltrichlorosilane, β-cyanoethyl dimethyl dichlorosilane (DMCS), β-cyanoethyl triethoxysilane, γ-cyanoethyl three One or more of methoxy silane, 3- isocyanatopropyl triethoxysilane；The amine treatment fluid is octadecyl- Dimethyl-(3- trimethoxy silicon propyl) ammonium chloride, 2- methylacryoyloxyethyl dimethyl-(3- trimethoxy silicon propyl) ammonium chloride Or one or more of 4- ethylene benzyl dimethyl-(3- trimethoxy silicon propyl) ammonium chloride.
In above-mentioned composition, the conductive filler can be carbon black, carbon nanotube, graphene, tin indium oxide, mix antimony titanium dioxide One or more of tin or metal powder.
The curing agent be at least one of quaternary ammonium, tertiary amines, the tertiary amine, quaternary ammonium N, N- dimethyl benzylamine or Triethylamine, one of tetrabutylammonium hydroxide, tetramethylammonium hydroxide, tetramethyl ammonium acetate, tetramethyl ammonium chloride.
In above-mentioned composition, the functional aid includes levelling agent or/and dispersing agent or/and defoaming agent.Wherein institute The levelling agent stated can be fluorine-carbon modified siloxanes EFKA-3570 or organically-modified siloxanes EFKA-3580；The dispersing agent can To be common water paint dispersing agent, sodium carboxymethylcellulose, Triton X-100 or dodecyl sulphur can be selected At least one of sour sodium；The defoaming agent be polysiloxane polyether copolymer such as BYK065, BYK-A501, BYK088, BYK052。
The pH adjusting agent is ethanol amine, diethanol amine, triethanolamine, N methyldiethanol amine, monoethanolamine or N.N- One or more of dimethylethanolamine mixture, pH adjustable range are controlled in 7-10, and major function is to adjust control to apply The pH value of material has a certain impact to the performance of the storage stability of coating, anti-corruption, anticorrosion, viscosity and film.
Laser printer rubber roller electric-conductive coating composition provided by the invention, added high dielectric material k > 7 can be very well Solve the problems, such as printout, wherein organic high-dielectric material itself and the compatibility of rubber roller coating system are preferable, and inorganic height It is settled in the coating in dielectric material by can preferably solve inorganic high-dielectric material after silane coupler modified processing The unstable problem with system.Therefore high dielectric material and conductive filler are added while guaranteeing rubber roller excellent conductive performance, energy Preferably adjustment dielectric loss angle tangent value, continual and steady control is carried out so as to the electric conductivity to rubber, solve due to Series Printing Problem caused by the accumulation for a large amount of electrostatic charge that long-term printing is generated with paper friction.It further, will be inorganic Dielectric material and the mixture of organic dielectric materials are as coating, opposite inorganic high-dielectric material, added organic high-dielectric Material can make coating all have better advantage in the raising of tear resistance, adhesive force, rubber roller integral, flexible, can assign color Powder static charge behavior appropriate and higher significantly improves to provide the initial pictures output of high quality and high stability Printer quality.
The present invention also provides a kind of preparation method of laser printer rubber roller with above-mentioned conductive coating, including it is following Step:
S1 is by 100-300 parts of water-base resin, 0.01-12 parts of high dielectric material, 0.05-15 parts of conductive filler, water 200-400 Part, 1-20 parts of functional aid, mixing is at the uniform velocity stirred with the revolving speed of 1000-1500rpm, is filtered, obtains coating major ingredient.
Wherein, inorganic high-dielectric material selected in high dielectric material is existed by silane coupling agent or amine treatment fluid 30-180min is heated under the conditions of 60-150 DEG C, carries out pretreatment modification.
PH adjusting agent will be added in S2 in coating major ingredient, adjust pH scope control in 7-10；
S3 by the coating major ingredient prepared with curing agent 1-10 part at the uniform velocity stir be sufficiently mixed after, by automatic spray gun by its The roll surfaces for having already passed through standardization processing are sprayed on, coating thickness is between 200nm-30 μm；
S4, which places the rubber roller sprayed in baking oven, dries, and oven temperature is 80 DEG C -150 DEG C, baking time 30- 120min obtains laser printer rubber roller of the present invention.
The laser printer rubber roller prepared using the above method, can be widely used in all kinds of laser printers, stable system And material homogeneity is high, does not settle, and has preparation process simple, wear-resisting, is capable of providing the rough sketch output of more stable high quality, together When meet and print requirement to durability.
The present invention is further described combined with specific embodiments below.
Embodiment 1:
30 parts of aqueous organic fluorine, 120 parts of water-based acrylic resin, TiO20.1 part of (size diameter of nanofiber 100nm, uses 80 DEG C of heating 100min pretreatment modifications of β-cyanoethyltrichlorosilane by 20-100 μm of length), conductive filler (charcoal It is black) 5 parts, 300 parts of water, 2.5 parts of levelling agent (EFKA-3570), 2 parts of dispersing agent (sodium carboxymethylcellulose).
It uses blender at the uniform velocity to mix with the revolving speed of 1200rpm above-mentioned raw materials, stirs, filters, pH is then added and adjusts 0.005 part of adjustment pH of agent (ethanol amine) is 7, adds 2 parts of curing agent (tetrabutylammonium hydroxide) and stirs evenly, by spraying automatically Rifle is sprayed on laser printer charging roller or 5 μm of developing roller surface, is then allowed to stand after 20min and toasts in 125 DEG C of baking ovens again Laser printer rubber roller conductive coating is made in 90min.
Embodiment 2:
Choose 50 parts of water-based acrylic resin, 20 parts of water-compatible amino resin, 30 parts of resol resins, BaTiO3Nanoparticle (size 800nm is changed 0.1 part of son using the 80 DEG C of heating 100min pretreatments of γ-glycidyl ether oxygen propyl trimethoxy silicane Property), 7 parts of conductive filler (ATO), 300 parts of water, 2 parts of defoaming agent (BYK052), 3 parts of dispersing agent (Triton X-100).
It uses blender at the uniform velocity to mix with the revolving speed of 1500rpm above-mentioned raw materials, stirs, filters, pH is then added and adjusts PH is adjusted to 8.5 by 0.1 part of agent (diethanol amine), is added 5 parts of curing agent (tetramethyl ammonium acetate) and is stirred evenly, by automatic Spray gun spraying is then allowed to stand after 20min and toasts in 125 DEG C of baking ovens again in laser printer charging roller or 10 μm of developing roller surface Laser printer rubber roller conductive coating is made in 80min.
Embodiment 3:
Choose 50 parts of aqueous polyester resin, 60 parts of waterborne organic silicon fluororesin, (Ba, Zr) TiO30.05 part of (ruler of nanosphere Very little 10 μm, using 100 DEG C of heating 100min pretreatment modifications of 3- isocyanatopropyl triethoxysilane), conductive filler (graphite Alkene) 6 parts, 200 parts of water, 2.5 parts of defoaming agent (BYK065), dispersing agent dodecyl sodium sulfate (1.5 parts), levelling agent (EFKA- 3580) 2.5 parts.
It uses blender at the uniform velocity to mix with the revolving speed of 1300rpm above-mentioned raw materials, stirs, filters, pH is then added and adjusts 0.3 part of conciliation pH to 9 of agent (N methyldiethanol amine), adds 5 parts of curing agent (tetramethyl ammonium chloride) and stirs evenly, by certainly Dynamic spray gun spraying is then allowed to stand after 20min and dries in 125 DEG C of baking ovens again in laser printer charging roller or 12 μm of developing roller surface Roasting 80min, that is, be made laser printer rubber roller conductive coating.
Embodiment 4:
Choose 20 parts of aqueous epoxy resins, 60 parts of waterborne organic silicon fluororesin, 30 parts of water-based acrylic resin, polyphenyl second Alkene-polymethyl methacrylate copolymer microballoon (10 μm) and BaTiO3Nanoparticle (size 500nm, using γ-glycidol 80 DEG C of heating 100min pretreatment modifications of ether oxygen propyl trimethoxy silicane) totally 0.2 part of (polystyrene microsphere and BaTiO3Nanometer Both particles ratio is 5:2), 2 parts of conductive filler (graphene), I TO5Part, 200 parts of water, 3 parts of defoaming agent (BYK052), dispersion 4 parts of agent (Triton X-100).
It uses blender at the uniform velocity to mix with the revolving speed of 1000rpm above-mentioned raw materials, stirs, filters, pH is then added and adjusts 0.5 part of adjustment pH of agent (monoethanolamine) be 9.5, add 7 parts of curing agent (tetrabutylammonium hydroxide and tetramethylammonium hydroxide, The two ratio 1:2) it stirs evenly, laser printer charging roller or 3 μm of developing roller surface are sprayed on by automatic spray gun, it is then quiet 80min is toasted in 125 DEG C of baking ovens again after setting 20min, that is, laser printer rubber roller conductive coating is made.
Embodiment 5:
Choose 40 parts of aqueous epoxy resins, 60 parts of waterborne organic silicon fluororesin, low density polyethylene (LDPE) and high density polyethylene (HDPE) And HfO2/Si3N4Totally 0.2 part of micro particles [(2 μm of size, using 2- methylacryoyloxyethyl dimethyl-(3- trimethoxy Silicon propyl) 120 DEG C of heating 100min pretreatment modifications of ammonium chloride)] (low density polyethylene (LDPE), high density polyethylene (HDPE), HfO2/Si3N4 Micro particles proportions are 5:3:2), conductive filler -- 2 parts of metal powder, 5 parts of ITO, 250 parts of water, defoaming agent (BYK065) 2.5 parts, 1.5 parts of dispersing agent (dodecyl sodium sulfate), 2.5 parts of levelling agent (EFKA-3580).
It uses blender at the uniform velocity to mix with the revolving speed of 1400rpm above-mentioned raw materials, stirs, filters, pH is then added and adjusts 0.15 part of conciliation pH to 8.5 of agent (N methyldiethanol amine), adds 7 parts of curing agent (tetramethyl ammonium chloride) and stirs evenly, and leads to It crosses automatic spray gun and is sprayed on laser printer charging roller or 9 μm of developing roller surface, be then allowed to stand after 20min again in 125 DEG C of baking ovens Laser printer rubber roller conductive coating is made in interior baking 80min.
Embodiment 6:
Choose 50 parts of water-based acrylic resin, 20 parts of water-compatible amino resin, 30 parts of resol resins, HfO2(Ba, Sr)TiO3(diameter 200nm, length 50-100um are heated 0.01 part of nanotube using γ-chloropropyl dichlorosilane 100oC 100min pretreatment modification) [HfO2(Ba, Sr) TiO3Both nanotubes ratio be 2:7], 5 parts of conductive filler carbon nanotube, water 300 parts, 2 parts of defoaming agent (BYK088), 3 parts of dispersing agent (Triton X-100).
It uses blender at the uniform velocity to mix with the revolving speed of 1200rpm above-mentioned raw materials, stirs, filters, pH is then added and adjusts 0.12 part of adjusting pH to 8.5 of agent (N methyldiethanol amine), adds 5 parts of curing agent (tetrabutylammonium hydroxide) and stirs evenly, It is sprayed on laser printer charging roller or 12 μm of developing roller surface by automatic spray gun, is then allowed to stand after 20min and is dried again at 125 DEG C 80min is toasted in case, that is, laser printer rubber roller conductive coating is made.
Comparative example 1:
30 parts of aqueous organic fluorine, 120 parts of water-based acrylic resin, TiO21 part of nanofiber (size diameter 100nm, 20-100 μm of length, use 80 DEG C of heating 100min pretreatment modifications of β-cyanoethyltrichlorosilane), 300 parts of water, levelling agent (EFKA-3570) 2.5 parts, 2 parts of dispersing agent (sodium carboxymethylcellulose).
It uses blender at the uniform velocity to mix with the revolving speed of 1200rpm above-mentioned raw materials, stirs, filters, pH is then added and adjusts 0.002 part of adjustment pH of agent (ethanol amine) is 7, adds 2 parts of curing agent (tetrabutylammonium hydroxide) and stirs evenly, by spraying automatically Rifle is sprayed on laser printer charging roller or 5 μm of developing roller surface, is then allowed to stand after 20min and toasts in 125 DEG C of baking ovens again Laser printer rubber roller conductive coating is made in 90min.
Comparative example 2:
30 parts of aqueous organic fluorine, 120 parts of water-based acrylic resin, 10 parts of conductive filler (carbon black), 300 parts of water, stream Flat 2.5 parts of agent (EFKA-3570), 2 parts of dispersing agent (sodium carboxymethylcellulose).
It uses blender at the uniform velocity to mix with the revolving speed of 1200rpm above-mentioned raw materials, stirs, filters, pH is then added and adjusts 0.003 part of adjustment pH of agent (ethanol amine) is 7, adds 2 parts of curing agent (tetrabutylammonium hydroxide) and stirs evenly, by spraying automatically Rifle is sprayed on laser printer charging roller or 5 μm of developing roller surface, is then allowed to stand after 20min and toasts in 125 DEG C of baking ovens again Laser printer rubber roller conductive coating is made in 90min.
Printing effect see the table below:
Above-described embodiment can see, and lack conductive filler in 1 component of comparative example, and picture quality is general, and 2 groups of comparative example Divide and lack high dielectric material, picture quality is poor, and the laser printer rubber roller with conductive coating of the present invention, since conduction applies Layer be added with high dielectric material and conductive filler, and by pH adjusting agent control, print stable system, export rough sketch quality compared with Height has good market value.
The preferred embodiment of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.

Claims (8)

1. a kind of conductive coating, which is characterized in that the raw material including following weight parts: 100-300 parts of water-base resin, Gao Jie electricity material Expect 0.01-12 parts, 0.05-15 parts of conductive filler, 1-20 parts of functional aid, 0.001-1 parts of pH adjusting agent；The water-base resin For aqueous epoxy resins, water-compatible amino resin, aqueous polyester resin, resol resins, water-based acrylic resin, aqueous organic At least one of silicone resin, aqueous organic fluorine, aqueous organic fluorinated silicone resin or aqueous polyurethane；The high dielectric material It for organic high-dielectric material or/and the inorganic high-dielectric material of modification, and is micro Nano material, the high dielectric material k > 7, The size of the high dielectric material is 1nm-30 μm.
2. conductive coating according to claim 1, it is characterised in that: the organic high-dielectric material be polytetrafluoroethylene (PTFE), It is tetrafluoraoethylene-hexafluoropropylene copolymer, poly(4-methyl-1-pentene), polypropylene, polytrifluorochloroethylene, low density polyethylene (LDPE), highly dense Spend polyethylene, ABS resin, polystyrene, ethene-vinyl acetate copolymer, polyphenylene oxide, silicone resin, polycarbonate, ethyl cellulose Element, polyvinyl chloride, polymethyl methacrylate, polyimides, epoxy resin, polyformaldehyde, nylon 6, nylon66 fiber, gathers partially polyester One or more of vinyl chloride, phenolic resin, nitrocellulose, Kynoar or polyvinylpyrrolidone material mixes It closes.
3. conductive coating according to claim 1, which is characterized in that the inorganic high-dielectric material of the modification first passes through Silane coupling agent or amine treatment fluid do modified pretreatment.
4. conductive coating according to claim 3, it is characterised in that: the inorganic high-dielectric material selection of the modification Ta2O5、TiO2、HfO2、(Ba,Sr)TiO3、(Ba,Zr)TiO3、BaTiO3、ZrO2、HfO2/Si3N4One of.
5. conductive coating according to claim 3, which is characterized in that the silane coupling agent is positive octadecyl trichlorosilane Alkane, hexadecane base trichlorosilane, n-tetradecane base trichlorosilane, n-octadecane base silicofluoroform, n-hexadecyl trifluoro silicon Alkane, n-tetradecane base silicofluoroform, γ-chloropropyl trichloro-silane, γ-chloropropyl dichlorosilane, γ-chloropropyl trimethoxy Base silane, γ-chloropropyl triethoxysilane, chloromethyl triethoxysilane, gamma-aminopropyl-triethoxy-silane, γ-ammonia third Base trimethoxy silane, γ-(β-aminoethyl) aminopropyl trimethoxysilane, γ-urea propyl-triethoxysilicane, anilinomethyl Triethoxysilane, anilinomethyl trimethoxy silane, γ-(the third oxygen of 2,3- epoxy) propyl trimethoxy silicane, γ-(2,3- The third oxygen of epoxy) propyl-triethoxysilicane, γ-(the third oxygen of 2,3- epoxy) hydroxypropyl methyl dimethoxysilane, β-(3,4- epoxide ring Hexyl) ethyl trimethoxy silane, gamma-methyl allyl acyloxypropyl trichlorosilane, gamma-methyl allyl acyloxypropyl trimethoxy Silane, gamma-methyl allyl acyloxypropyl methyldiethoxysilane, gamma-methyl allyl acyloxypropyl methyl dimethoxysilane, γ-mercaptopropyl trimethoxysilane, gamma-mercaptopropyltriethoxysilane, double-(tri- ethoxy silicon propyl of 3-) tetrasulfide, it is double- (tri- ethoxy silicon propyl of 3-) disulphide, vinyl trichlorosilane, vinyltriethoxysilane, vinyl trimethoxy silicon Alkane, vinyl three (2- methoxyethoxy) silane, vinyltriacetoxy silane, three tert-butyl peroxide silane of vinyl, Vinyl methyl dichlorosilane, β-cyanoethyltrichlorosilane, β-cyanoethyl dimethyl dichlorosilane (DMCS), β-cyanoethyl triethoxysilicane One or more of alkane, γ-cyanoethyl trimethoxy silane, 3- isocyanatopropyl triethoxysilane；The amine processing Liquid is octadecyl-dimethyl-(3- trimethoxy silicon propyl) ammonium chloride, 2- methylacryoyloxyethyl dimethyl-(3- trimethoxy Silicon propyl) one or more of ammonium chloride or 4- ethylene benzyl dimethyl-(3- trimethoxy silicon propyl) ammonium chloride.
6. conductive coating according to claim 1, which is characterized in that the conductive filler is carbon black, carbon nanotube, graphite One or more of alkene, tin indium oxide, antimony-doped stannic oxide or metal powder.
7. conductive coating according to claim 1, which is characterized in that the pH adjusting agent is ethanol amine, diethanol amine, three Ethanol amine, N methyldiethanol amine or N, one or more of N- dimethylethanolamine mixture, the control of pH adjustable range exist 7-10。
8. a kind of method for preparing laser printer rubber roller using the described in any item conductive coatings of claim 1-7, feature It is, comprising the following steps:
By 100-300 parts of water-base resin, 0.01-12 parts of high dielectric material, 0.05-15 parts of conductive filler, 200-400 parts of water, function 1-20 parts of property auxiliary agent mixing of energy, are at the uniform velocity stirred with the revolving speed of 1000-1500rpm, are filtered, obtain coating major ingredient；
PH adjusting agent 0.001-1 parts will be added in coating major ingredient, adjusts pH scope control in 7-10；
The coating major ingredient prepared and curing agent 1-10 parts are at the uniform velocity stirred after being sufficiently mixed, is sprayed on by automatic spray gun The roll surfaces of standardization processing are had already passed through, coating thickness is between 200nm-30 μm；
The rubber roller sprayed is placed in baking oven and is dried, oven temperature is 80 DEG C -150 DEG C, baking time 30-120min makes Obtain laser printer rubber roller.
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