CN107272355A - One kind polymerization carbon dust and preparation method thereof - Google Patents
One kind polymerization carbon dust and preparation method thereof Download PDFInfo
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- CN107272355A CN107272355A CN201710667536.2A CN201710667536A CN107272355A CN 107272355 A CN107272355 A CN 107272355A CN 201710667536 A CN201710667536 A CN 201710667536A CN 107272355 A CN107272355 A CN 107272355A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/10—Developers with toner particles characterised by carrier particles
- G03G9/113—Developers with toner particles characterised by carrier particles having coatings applied thereto
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/0802—Preparation methods
Abstract
The invention discloses one kind polymerization carbon dust and preparation method thereof, belong to carbon dust technical field.A kind of electropositive being adapted to by formation such as electrophotography, electrostatic recordings, elecrtonegativity carbon dust are aimed to provide, by light bridging reaction using stable inside and outside membrane structure, polymerization carbon dust of low-temperature fixability and Nei Re storages property and preparation method thereof is together improved.The technical scheme that the present invention is provided is such：One kind polymerization carbon dust, described polymerization carbon dust includes film resin and the outer film resin of 60~80 parts by weight in 60~80 parts by weight；Wherein, described outer film resin contains the light-initiated functional groups of 4.1mol%~20mol%.The present invention can be used for laser printing.
Description
Technical field
The invention belongs to carbon dust technical field, especially a kind of polymerization carbon dust and preparation method thereof.
Background technology
Laser printer is to be formed using laser in photosensitive drums after sub-image, is moved on to carbon dust using the difference of current potential photosensitive
On bulging latent image and it is transferred to the typical printing device that image is drawn out on paper.Research and develop at present and laser on the market
Printer, based on the dry-printed machine of main black, according to the difference for being charged by friction the charge potential for being injected into carbon dust, carbon dust is turned
The sub-image method moved on in photosensitive drums, carbon dust is pulverulence, therefore has an environmental problem of dust etc., but easy to manufacture and manufacture
Cost is also cheap and the advantage that printer can be minimized.
In the binder resin of usual carbon dust, using colouring agents such as carbon blacks or in addition colored particles of dispersing additive, this
Class carbon dust uses coloring pigment, adjusts the charge adjusting agent of toner charge amount, the binder resin (binder resin) of a combination,
Including completing to be fixed after operation, transferred object is easy to the mould release of separation, also has to assign carbon powder particle technical ability or carry
High physical property, carbon powder particle appearance formation additive.
The ghost phenomenon of one of the characteristic required in carbon dust is to refer to the carbon dust figure that transferred object is transferred to from drum wicking surface
During as being fixed, the carbon powder image of heating roller is bonded at, showing for carbon powder image occurs in the field for being not intended to printing when printing next time
As the low temperature ghost occurred in low temperature and the high temperature ghost occurred in high temperature are distinguished.Such carbon dust property is main by using
Binder resin is determined, when usually used carbon dust binder resin melting temperature is low, and fixation performance is good, but ghost is undesirable,
When melting temperature is high, there is opposite phenomenon.
In electrophotography, tow-component developer that the developer used is made up of carbon dust and carrier granular and without using
The single composition developer of carrier, single composition carbon dust and non magnetic carbon dust of the single composition developer point containing magnetic powder, generally in non-magnetic
Property single composition, in order to which the mobility for improving carbon dust individually adds the flowing agents such as collagenous silica.
The manufacture method of carbon dust point comminuting method and polymerization, comminuting method is to melt the external additive of synthetic resin and colouring agent
Melt after mixing, crushed, the particle of particle diameter needed for then being obtained by classification simultaneously obtains carbon dust.Carbon dust is crushed easily to be formed
The particle of wide size distribution, therefore in order to obtain desired imaging characteristics, crushed material is needed by classification adjustment to have necessarily
Narrow space from particle diameter distribution, but classification process is very numerous and diverse and productivity is undesirable, and has under the recovery rate of classification process carbon dust
Sliding the problem of.Therefore the polymerization carbon dust that is easily controlled particle diameter in the recent period and need not be classified etc. numerous and diverse manufacturing process is attracted attention.
Polymerization carbon dust manufacture method has suspension polymerisation and dispersin polymerization, emulsification coacervation, manufactures poly- using suspension polymerization
The method for closing carbon dust is colouring agent, also polymerization initiator, bridging agent as needed, charge adjusting agent etc. on polymerizable monomer
After the polymerizable monomer composition that various additives uniformly dissolve or disperseed makes, the water system containing dispersion stabilizer
In decentralized medium, after disperseing using mixer, the fine drop particle of polymerizable monomer composition is formed, then passes through heating
Suspension polymerisation is carried out, the coloured polymeric body particle (polymerization carbon dust) with required particle diameter is obtained.
Dispersion copolymerization method is the vinyl monomers such as styrene and acrylate, pigment, charge adjusting agent and adding such as wax
Plus after the manufacture of agent blended together dispersion liquid, its dispersion liquid is disperseed in aqueous or non-aqueous solvent, and by monomer
Carbon powder particle is obtained by reacting.
Emulsification coacervation is after making tiny emulsion particle, to pass through the method for condensing manufacture carbon dust composition.First
After first time composition is manufactured by emulsion polymerization reaction, its carbon dust manufacture method condensed by cohesion process.
Polymerization carbon dust can form accurate trickle image compared to carbon dust is crushed, but can not correspond to high speed copy completely or complete
The problem of colorization, energy-saving etc..Little power consumptions such as duplicator, the printer of electronic photography mode and high speed copier requirement is logical
Normal 150 DEG C of fixation process power consumptions are more, therefore the temperature of the angle requirement downward fixation process in energy-conservation.
The fixing temperature of downward carbon dust is needed, is compared compared to traditional carbon dust, the carbon dust that can be fixed as used in low temperature, both
The temperature of heating wheel, which can be lowered, can also shorten fixing time, and can realize high speed copy.According to electronic photography mode, it is desirable to clear
Color photocopying.It is extremely important by colour mixture after the uniform melting mixing of carbon dust, the demonstration used among various meetings is used
The coloured image used on projector (OHP) film is more and more, therefore it is required that carbon dust is equal in transparent synthetic resin film
Even melting, needs to be set at first point in the melt viscosity for being proximate to fixing temperature.Turning down the method for carbon dust melt viscosity has
Using more low molecular weight or the method for turning down glass transition temperature.In order to comply with energy-conservation or high speed copy, colorization etc.
It is required that, the binder resin glass transition temperature of composition carbon dust is reduced, but using the carbon dust of low glass transition temperature binder resin,
Among storage or transport, cause in the cartridge of vision facilities and mutually check appearance easily caking, the carbon as storage property difference
Powder.The fixing temperature meltbility for turning down carbon dust according to traditional method is accomplished uniformly, though can improve the fixation performance of carbon dust, is occurred
The inverse correlation that storage property glides.Once there is motion to solve inverse correlation, by low glass transition temperature binder resin
The carbon dust of composition, by using the condensate foreskin of high glass transition temperature, improve in checking property, solve to deposit sex chromosome mosaicism and once
There is motion so-called " capsule shape carbon dust ".
The content of the invention
The present invention is intended to provide a kind of electropositive being adapted to by formation such as electrophotography, electrostatic recordings, elecrtonegativity carbon
Powder, by light bridging reaction using stable inside and outside membrane structure, together improves the polymerization carbon of low-temperature fixability and Nei Re storages property
Powder and preparation method thereof.
In order to realize above-mentioned technique effect, the technical scheme that the present invention is provided is such：One kind polymerization carbon dust, it is described
Polymerizeing carbon dust includes film resin and the outer film resin of 60~80 parts by weight in 60~80 parts by weight；
Wherein, described outer film resin contains the light-initiated functional groups of 4.1mol%~20mol%.
Preferably, described polymerization carbon dust also includes 0.1~10 parts by weight wax, 1~20 parts by weight pigment, 0.1~5 weight
Measure part charge adjusting agent, 0.1~10 parts by weight additive.
Wherein, the glass transition temperature of described interior film resin is 30 DEG C~80, mean molecule quantity 4000g/mol~
40000g/mol。
Wherein, the glass transition temperature of described outer film resin is 60 DEG C~90 DEG C, mean molecule quantity 5000g/mol~
50000g/mol。
Wherein, described interior film resin is the one or more in polyester, polyester fiber epoxy, polystyrene.
Wherein, described outer film resin is epoxy resin, polyurethane-modified polyester, one kind in the silicones of modification or several
Kind.
A kind of preparation method of polymerization carbon dust as described above, comprises the steps：
Step 1：Prepare inner membrance resin dispersion liquid, aqueous phase, outer membrane resin dispersion liquid；
Step 2：Emulsification, particle homogenization and exposure；
Step 3：Remove solvent, cleaning and drying, add outside.
Wherein, the emulsifying step described in step 2 is specially：By 700 parts by weight inner membrance resin dispersion liquids, 102 weight especially
Film resin dispersion liquid, the mixing of 2000 parts by weight aqueous phases, emulsification, less than 20 DEG C of now temperature holding obtain emulsified dispersed liquid；
Wherein, described emulsive rate is 13000rpm, and emulsification times are 25 minutes.
Wherein, described particle homogenization and step of exposure are specially：By 20 DEG C of emulsified dispersed liquids under 254nm ultraviolets
Observe while stirring, raise 5 DEG C every 20 minutes temperature, when rising to 35 DEG C, keep the temperature 1 hour, be only stirred.
Wherein, described step 3 specifically includes following step：
Step S1：600torr is decompressed to using film film drying-machine, solvent is removed, plus ion exchange water is gone forward side by side
After row stirring 10min, it is filtered under diminished pressure and obtains thin pancake state；
Step S2：Cleaned using 10% hydrochloric acid after above-mentioned thin pancake shape product, conductance reaches less than 3, uses ion exchange
Water cleaning and decompression drying acquisition particle；
Step S3：100 parts by weight particles are mixed with 1 parts by weight hydrophobic silica, 0.6 parts by weight of titanium oxide, led to
Cross horizontal She Er batch mixers and obtain polymerization carbon dust.
Further description is carried out to technical scheme below：
The light source used in light bridging reaction is electromagnetic wave (Radiowave), microwave (Microwave) infrared ray
(IR), visible rays (Visible light), ultraviolet (UV), X-ray (X-ray), γ (gamma-beam of magnetic line of force)-ray etc..Electricity
Magnetic wave or microwave-infrared line are not equipped with that the sufficient energy of polymerization can be triggered, and visible rays is resin dedicated for repairing dentistry,
In light bridging reaction using it is most be ultraviolet.The resin that can perform bridge formation by light trigger is polyester acrylate
(PEA), epoxy acrylate (EA), urethane acrylate (UA), acrylic resin, the unsaturated polyester (UP) mixed with styrene
(Fumaric or Maleic are unsaturated), amino acrylates, cyclohexane epoxy (Cyclophthalic Epoxy), vinyl ethers
Deng.
The light-initiated functional group for being contained in the outer film resin of polymerization carbon dust is to produce can carry out the light of bridge formation and draw by ultraviolet
Hair agent simultaneously carries out bridging reaction.
The light-initiated functional group for being contained in outer film resin is oxime urethanes.
By the reaction of isocyanate-monomer and ketoxime compounds, synthesis contains after the monomer of light-initiated functional group, then
Light-initiated functional group is contained within outer membrane book by secondary progress combined polymerization.
Add nuclear resin in polymerization carbon dust in the invention in wax, when heating fixing in fixation process, play with paper from
The effect of type well.Can have with the material of such wax low molecular weight polyethylene, low-molecular-weight polypropylene, low molecular weight propylene-
Ethylene copolymer, micro-crystalline wax, palm wax, husky rope wax or paraffin etc., when polymerizeing the gross weight 100 of carbon dust, with 0.1% weight
Add preferably in~10% weight of amount.
Pigment polymerize the colouring agent used in carbon dust as the invention, there is carbon black, Buddhist nun's lattice dyestuff, aniline blue, chrome yellow, Du Pont
Red, quinoline yellow, methylene blue chloride, phthalocyanine blue, malachite green oxalate, rose Bangladesh, C.I. reds 48:1st, C.I. is red
Pigment 122, C.I. reds 57:1st, the blue pigment 15 of C.I. yellow pigments 97, C.I. yellow pigments 12, C.I.:1 and C.I. indigo plant face
Material 15:3 etc., during the gross weight 100 of carbon dust, the addition weight of 1% weight~20% is suitable.
Solvent is organic solvent, by reducing the viscosity of carbon dust composition, in order to be more prone to carry out emulsion dispersion, is used
Organic solvent.Such solvent ratio is if any toluene, dimethylbenzene, benzene, carbon tetrachloride, dichloromethane, 1,2- dichloroethanes, 1,1,2-
Trichloroethanes, trichloro ethylene, chloroform, monochlorobenzene, ethyl acetate, butanone, acetone, tetrahydrochysene French Franc etc. are alone or in any combination
It is applied in combination.
Formed after carbon powder particle in order to readily volatilized, be adapted to using acetic acid methyl, acetic acid ethyl.It is molten according to emulsification degree
Agent usage amount is carbon dust muffin amount：The weight of quantity of solvent compares 1:1~1:4, it is more suitable for for 1:2.
Interior nuclear resin is the Primary resins of polymerization carbon dust composition in the invention, and the ethene base system being polymerize with monomer, which polymerize, to be set
Fat, vinyl monomer has methacrylate, ethyl propylene acid esters, propyl acrylate, butyl acrylate, acrylic acid cyclohexanol etc.
Identical acrylate；With methyl methacrylate, EMA, propyl methacrylate, butyl methacrylate
Etc. identical methacrylate；With vinyltoluene, α-methyl styrene, styrene identical aromatic vinyl monomer；
With the identical acrylate such as cyclohexanol；Undersaturated binary acid dialkyl ester；Vinyl esters；Nitrogenous vinyl monomer；Most
Less using monomers such as a kind of undersaturated dicarboxylic acid monoesters.
By dispersion stabilizer in the invention, increase the viscosity of decentralized medium, strengthen the shearing force of mixer or in order to true
Protect more stable emulsifying ability.Such dispersion stabilizer can use polyvinyl alcohol, methylcellulose, ethyl cellulose, poly-
Acrylic acid, polyacrylamide, PEO and polyester copolymer (A Lin telluriums carboxylic acid-methyl-g- methacrylates-
Co- methacrylic acids) and inorganic salts, organic granular and alcohol nonionic surfactant, anion system interfacial agent and with
The known polymerization dispersion stabilizer of zwitterionic surfactant identical.
The polymerization carbon dust of the invention is scattered using this polymerization using dispersion stabilizer is polymerize preferably with polyvinyl alcohol identical
When stabilizer and organic solvent-water liquid mixed liquor, preferable result can be obtained, is at this moment using the solvent that can be mixed with water
Good, the ethanol such as methanol, isopropanol, glycol class and acetone, butanone equal solvent are used alone one or two and are used in mixed way.This
The dispersion stabilizer of class generally uses 0.1~20% weight preferably in the weight of decentralized medium 100.
In order to strengthen interior hot keeping quality and high temperature ghost characteristic, outer film resin has been used shifts temperature than kernel plexiglas
The high resin of degree.The invention China and foreign countries film resin is included after light-initiated functional group, ultraviolet exposure, is ensured more by bridging reaction
Plus the improvement of stable high temperature ghost, 60 DEG C of the glass transition temperature of usual outer film resin~90 DEG C, weight averaged molecular
(Mw) 5000g/mol~50000g/ is measured, and the epoxy resin, epoxy resin modification ester, polyurethane with Mol characteristics can be used
Resin modified ester, modified silicone, acrylic resin, polyvinylether, the styrene unsaturated polyester resin of mixing, amino
Acrylate etc..During such outer membrane resin carbon dust gross weight 100, using the weight of 5% weight~40% preferably.
When the polymerization carbon dust of the invention is charged by friction, in order to improve charging property and ensure that the homogeneous band electricity of carbon dust uses electricity
Lotus conditioning agent.Charge adjusting agent uses various positive electricity or negative electricity charge adjusting agent, such as Buddhist nun's lattice NO1 (production of company of Japan), Buddhist nun
Lattice EX (production of company of Japan), TRH (production of soil conservation paddy company), T-77 (production of soil conservation paddy company), Bontron S-34 (companies of Japan
Production), Bontron E-84 (production of company of Japan) etc..Charge adjusting agent be carbon dust gross weight 100 when, with 0.01% weight~
The combination of 10% weight in outer film resin than mixing preferably.
Additive uses flowing agent or grinding agent, the polymerization carbon dust of the invention, by with flowing agent or grinding agent etc.
Additive combination becomes developer.When being mixed in polymerization carbon dust after addition additive, the surface of polymerization carbon dust is attached to, is carried
The mobility of height polymerization carbon dust or the formation for suppressing carbon dust film (FILM) on photoreceptor by abrasive action.Such additive has
Representational inorganic particulate and organic resin, inorganic particulate have silica, aluminum oxide, titanium oxide, zinc oxide, titanium dioxide
Tin, strontium titanates etc., organic resin particle have methacrylate polymers particle, acrylate polymer particle, styrene-first
Base acrylate copolymer particle, copolymer in cinnamic acrylic ester particle, kernel are methacrylate polymers, outer membrane
For membranous type particle outside the kernel that is formed with styrene polymer etc..
Additive in the invention is to use inorganic oxide particle preferably, is more suitable for using silicon dioxide granule, special
Not Shi He silicic acid anhydride silicon dioxide granule.In order to which additive is attached into carbon dust, additive and polymerization in the invention
Carbon dust is stirred after pouring Henschel mixer into.The usage amount of additive is not limited, but during the gross weight 100 of carbon dust,
Usually using the weight of 0.1% weight~10%.Polymerization carbon dust in the invention can be used in developer without using additive.
In order to more import light-initiated functional group, first synthesis contains the monomer of light-initiated functional group.Make in the invention
The monomer of light-initiated functional group has methacryloxyethyl, diphenyl-ketoxime polyurethane (MBU)
The present invention is compared with conventional method, with advantages below：
1. can save, because this is in order to cause bridging reaction, and the micro light comprising energy bridging reaction in polymerization carbon dust draws
Send out functional group.
2. due to causing bridging reaction in the short time, thus it is both economical.
3. mini-plant is only needed in exposure technology, therefore small investment.
4. polymerization carbon dust in the invention and its manufacture method be using glass transition temperature compare inner core particles it is high outside
Film resin, in even particle size distribution and the low inner core particles of glass transition temperature after uniform coating, by carrying out light frame
Bridge reaction produces the better carbon dust of high temperature ghost.The outer film resin for now polymerizeing carbon dust in the invention is by interior kernel oil
Before drop coating layer, bridging reaction is to minimum and equably coating after interior nuclear resin, is built bridge by ultraviolet exposure
Reaction.
Brief description of the drawings
Fig. 1 is the sectional view of polymerization carbon dust structure.
Embodiment
With reference to embodiment, the claim to the present invention is further described in detail, but is not constituted
Any limitation of the invention, any limited number of time modification made in the claims in the present invention protection domain, still in the present invention
Claims in.
Embodiment 1
<Inner membrance resin dispersion liquid is manufactured>
The invention is by 200g styrene-acrylates SE0030 (production of ponding chemical industry) and 120g carbon blacks (C44 mitsubishi chemical industries
Production)
It is put into after 300g ethyl acetate, disperses pigment in advance using ball mill, then its dispersion liquid and 8 00g benzene second
Alkene-acrylate SE0030 (production of ponding chemical industry), ethyl acetate 540g, together in 80 DEG C circulation and stir after, be cooled to
Less than 30 DEG C and add after the above-mentioned wax dispersions of 400g, pass through rotation dispersion machine at a high speed and manufacture inner membrance resin dispersion liquid and manufacture
<Aqueous phase is manufactured>
6g polyvinyl alcohol (PVA 318) among the invention is carried out to heating fusing in 1989g ion exchange water
Afterwards, with calcium carbonate 2.7g (CaCO3) and organic filler 2.3g when dispersion stabilizer is added and is stirred with 160g ethyl acetate
Manufacture.
<Manufacture outer membrane resin dispersion liquid>
By the epoxy resin PGMA25g of above-mentioned polymerization and above-mentioned copolymer 1 (MBU-co-MMA1) 25g, S34 in the invention
4g (Orient Company production) is put into 50g ethyl acetate, and is stirred within two minutes with 5000rpm progress using TK types high speed mixer
Mix.
<Emulsification>
It is put into inner membrance resin dispersion liquid 700g and 102g outer membrane resin dispersion liquid and simultaneously 2000g's in the invention
After aqueous phase, emulsified within 25 minutes with 13000rpm, now temperature is kept for less than 20 DEG C, being more suitable for holding 13000rpm is
It is good.
<Particle homogenization and exposure>
Emulsified dispersed liquid is stirred in 20 DEG C while observing 254nm ultraviolets and every 20 minutes in the invention
5 DEG C of lifting, adds a hour to keep mutually synthermal and be only stirred again to 35 DEG C.
<Remove solvent>
The invention is, using the 40 DEG C of decompressions of film film drying-machine, after 600torr removes solvent, to be put into 2000ml
Ion exchange water is simultaneously stirred after 10min stirrings, is filtered under diminished pressure and is obtained thin pancake state.
<Cleaning and drying>
Cleaned in the invention by 10% hydrochloric acid after above-mentioned thin pancake shape, conductance is handed over untill reaching less than 3 with ion
Change water cleaning and decompression drying obtains particle.
<Add outside>
In the invention in above-mentioned particle 100g, hydrophobic silica 1.0g and 0.6g titanium oxide differential (TiO2) is added
Afterwards, carbon dust 1 is obtained by horizontal She Er batch mixers.
Embodiment 2
The manufacture method for polymerizeing carbon dust is identical with above-described embodiment 1, unlike：Above-described embodiment 1 is manufactured into outer membrane tree
Copolymer 1 (MBU-co-MMA1) used in the fat dispersion liquid stage is changed to copolymer 2 (MBU-co-MMA2).
Embodiment 3
It polymerize the manufacture method of carbon dust same as Example 1 for reality, unlike：By what is used in above-described embodiment 1
Inner membrance resin dispersion liquid Resin styrene acrylic resin SE0030, is changed to using polyester resin FC1635 (the beautiful sun production of Mitsubishi).
Comparative example 1
The difference of comparative example 1 and embodiment 3 is, without exposure technology.
Comparative example 2
Comparative example 2 is different from embodiment 3 to be, when manufacturing outer membrane resin dispersion liquid, PGMA is used alone.
Gained polymerization carbon dust manufactured by embodiment 1-3 and comparative example 1-2 is subjected to fixation performance, interior heat type, high temperature respectively
Ghost is measured respectively, to be contrasted, and refers to table 1：
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | |
| Fixation performance | 4 | 4 | 4 | 4.5 | 4.5 |
| It is interior hot | 5 | 5 | 5 | 3 | 3 |
| High temperature ghost | 5 | 5 | 5 | 5 | 5 |
Data described in table 1 are determined and obtained by following methods：
Fixation performance detection method：The carbon dust obtained by the embodiment and comparative example of the invention, using individually transferring
After equipment is transferred on paper, after being fixed using Φ 40mm heating wheel stabilization machine in 150 DEG C, concentration reaches more than 1.4
Part, by using Crockmeter detect five times scrape before and after image color.The data of fixation performance are bigger, specify shadow
Property is good.
Wherein, the image color before image color/scraping after fixation performance=scraping.
Here, fixation performance " 5 ":More than 0.95；Fixation performance " 4 ":More than 0.85；Fixation performance " 3 ":More than 0.75；Fixation performance
“2”:More than 0.65；Fixation performance " 1 ":Less than 0.65.
Interior hot detection method：The carbon dust that filling 10g is obtained by embodiment and comparative example in glass container, 22 hours
Place and carbon dust is cooled to after 24 DEG C in 55 DEG C of thermostats again, permeability is detected using permeability detecting instrument.Infiltration
Heat has good keeping qualities in the bigger explanation of degrees of data, when it detects data less than 15mm, and the possibility gone wrong when using is high.
According to permeability, internally hot keeping quality criterion is as follows：Permeability " 5 ":All pass through；Permeability " 4 ":25mm
More than；Permeability " 3 ":20~25mm；Permeability " 2 ":15~20mm；Permeability " 1 ":Within 15mm.
High temperature ghost detection method：The carbon dust obtained according to the embodiment of the invention and comparative example, uses transfer apparatus
After being transferred on paper, image color reaches more than 1.4 part, by lifting temperature while using Φ 40mm heating rollers
Stabilization machine is fixed, and detects the temperature that non-print portion does not pollute, and the bigger finger high temperature ghost of its data is good.
Here, high temperature ghost " 5 ":More than 190 DEG C；High temperature ghost " 4 ":190 DEG C~180 DEG C；High temperature ghost " 3 ":180℃
~170 DEG C；High temperature ghost " 2 ":Less than 170 DEG C.
It can be illustrated according to above-mentioned testing result, the embodiment of the invention compares comparative example fixation performance, interior hot keeping quality, high temperature
Ghost is all outstanding.
Above-described is only presently preferred embodiments of the present invention, all timess done in the range of the spirit and principles in the present invention
What modifications, equivalent substitutions and improvements etc., should be included within the scope of the present invention.
Claims (10)
1. one kind polymerization carbon dust, it is characterised in that described polymerization carbon dust includes film resin and 60~80 in 60~80 parts by weight
The outer film resin of parts by weight；
Wherein, described outer film resin contains the light-initiated functional groups of 4.1mol%~20mol%.
2. a kind of polymerization carbon dust according to claim 1, it is characterised in that described polymerization carbon dust also includes 0.1~10
Parts by weight wax, 1~20 parts by weight pigment, 0.1~5 parts by weight charge adjusting agent, 0.1~10 parts by weight additive.
3. a kind of polymerization carbon dust according to claim 1, it is characterised in that the glass transition temperature of described interior film resin
For 30 DEG C~80, mean molecule quantity 4000g/mol~40000g/mol.
4. a kind of polymerization carbon dust according to claim 1, it is characterised in that the glass transition temperature of described outer film resin
For 60 DEG C~90 DEG C, mean molecule quantity 5000g/mol~50000g/mol.
5. a kind of polymerization carbon dust according to claim 1, it is characterised in that described interior film resin is polyester, polyester fibre
Tie up the one or more in epoxy, polystyrene.
6. a kind of polymerization carbon dust according to claim 1, it is characterised in that described outer film resin is epoxy resin, gathered
One or more in urethane modified polyester, the silicones of modification.
7. a kind of preparation method of polymerization carbon dust as claimed in claim 1, it is characterised in that comprise the steps：
Step 1：Prepare inner membrance resin dispersion liquid, aqueous phase, outer membrane resin dispersion liquid；
Step 2：Emulsification, particle homogenization and exposure；
Step 3：Remove solvent, cleaning and drying, add outside.
8. a kind of preparation method for polymerizeing carbon dust according to claim 7, it is characterised in that the emulsification step described in step 2
It is rapid to be specially：700 parts by weight inner membrance resin dispersion liquids, 102 parts by weight outer membrane resin dispersion liquids, 2000 parts by weight aqueous phases are mixed
Close, emulsification, now temperature is kept for less than 20 DEG C, obtains emulsified dispersed liquid；
Wherein, described emulsive rate is 13000rpm, and emulsification times are 25 minutes.
9. a kind of preparation method of polymerization carbon dust according to claim 7-8, it is characterised in that described particle homogenization
And step of exposure is specially：20 DEG C of emulsified dispersed liquids are observed while stirring under 254nm ultraviolets, every 20 minutes temperature liters
It is high 5 DEG C, when rising to 35 DEG C, keep the temperature 1 hour, be only stirred.
10. a kind of preparation method for polymerizeing carbon dust according to claim 7, it is characterised in that described step 3 is specifically wrapped
Include following step：
Step S1：600torr, removing solvent, plus ion exchange water are decompressed to using film film drying-machine and are stirred
Mix after 10min, be filtered under diminished pressure and obtain thin pancake state；
Step S2：Cleaned using 10% hydrochloric acid after above-mentioned thin pancake shape product, conductance reaches less than 3, clear with ion exchange water
Wash and decompression drying obtains particle；
Step S3：100 parts by weight particles are mixed with 1 parts by weight hydrophobic silica, 0.6 parts by weight of titanium oxide, pass through horizontal stroke
She Er batch mixers obtain polymerization carbon dust.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820870A (en) * | 2020-12-31 | 2021-05-18 | 齐鲁工业大学 | Si @ void @ C embedded three-dimensional porous carbon mesh negative electrode material and preparation and application thereof |
| CN113777897A (en) * | 2021-08-16 | 2021-12-10 | 珠海天威飞马打印耗材有限公司 | Modified carbon powder and carbon powder box |
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