CN105733318A - Modified aluminum pigment and preparation method thereof - Google Patents
Modified aluminum pigment and preparation method thereof Download PDFInfo
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- CN105733318A CN105733318A CN201610192927.9A CN201610192927A CN105733318A CN 105733318 A CN105733318 A CN 105733318A CN 201610192927 A CN201610192927 A CN 201610192927A CN 105733318 A CN105733318 A CN 105733318A
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- 239000000049 pigment Substances 0.000 title claims abstract description 67
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 title abstract 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 94
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 75
- 239000003960 organic solvent Substances 0.000 claims abstract description 41
- 239000000203 mixture Substances 0.000 claims abstract description 37
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 30
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 24
- 229930195729 fatty acid Natural products 0.000 claims abstract description 24
- 239000000194 fatty acid Substances 0.000 claims abstract description 24
- 150000004665 fatty acids Chemical class 0.000 claims abstract description 24
- 150000001398 aluminium Chemical class 0.000 claims description 31
- 239000000843 powder Substances 0.000 claims description 26
- 239000004411 aluminium Substances 0.000 claims description 24
- 238000000498 ball milling Methods 0.000 claims description 19
- 239000012065 filter cake Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 13
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 13
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 13
- 239000005642 Oleic acid Substances 0.000 claims description 13
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 13
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 13
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 12
- 239000000047 product Substances 0.000 claims description 9
- 238000004898 kneading Methods 0.000 claims description 7
- 238000010334 sieve classification Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 claims description 6
- 150000004668 long chain fatty acids Chemical class 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 235000021355 Stearic acid Nutrition 0.000 claims description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 4
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 4
- 239000008117 stearic acid Substances 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 239000004215 Carbon black (E152) Substances 0.000 claims description 3
- 239000005639 Lauric acid Substances 0.000 claims description 3
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000003860 storage Methods 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 239000000706 filtrate Substances 0.000 description 6
- 238000000227 grinding Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000004381 surface treatment Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910052756 noble gas Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229940023462 paste product Drugs 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910000677 High-carbon steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/62—Metallic pigments or fillers
- C09C1/64—Aluminium
- C09C1/648—Aluminium treated with inorganic and organic, e.g. polymeric, compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/006—Combinations of treatments provided for in groups C09C3/04 - C09C3/12
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention provides a modified aluminum pigment. The modified aluminum pigment comprises the following components: 60wt%-70wt% of sheet aluminum powder, 25wt%-35wt% of an organic solvent and 3wt%-5wt% of a composition formed by graphene oxide and fatty acid. The invention correspondingly provides a preparation method of the modified aluminum pigment. Compared with traditional aluminum pigments, the modified aluminum pigment has excellent storage stability, sliver-dropping resistance and corrosion resistance.
Description
Technical field
The invention belongs to fine inorganic chemical technology field, be specifically related to a kind of modified aluminium pigment and preparation method thereof.
Background technology
Aluminum pigment is a kind of important metallic effect pigments, it is mainly used in the industries such as coating, ink, printing and dyeing, plastic, papermaking, rubber and pottery, along with the fast development of downstream industry, the demand of pigment constantly being expanded, the development prospect of China's pigment industry is very wide.Aluminum pigment pure aluminum metal produces, and it has the numerous characteristics of aluminum metal itself；Aluminum pigment is actually Surface coating the tablet with pigment characteristics of fatty acid thin film, and this form makes it have exclusive feature, and because of its superior decay resistance and decoration performance, its application is widely.
The manufacture method of aluminum pigment mainly has two kinds: first method is ball-milling method.It is divided into " dry method " and " wet method ".Produce with ball mill, ball mill is put into steel ball, aluminium powder and lubricant, utilizes steel ball to become flakey aluminium powder after smashing aluminium powder.Production process is full of noble gas in ball mill and pipeline, is called " dry production "；" wet production " is to add petroleum solvent (organic solvent) in ball mill to replace noble gas, is mixed by a certain percentage with organic solvent, lubricant (such as fatty acid) etc. by aluminium powder and is placed on grinding in ball grinder.Screened, filter pressing, makes filter cake afterwards, and then through kneading, surface treatment becomes aluminum paste.In current industry standard, the wet method aluminum pigment product of regulation generally comprises following component: flake aluminum 60～70wt%, organic solvent 25～35wt% and fatty acid 3～5wt%.Another kind of method is to adopt physical vaporous deposition (PVD) to produce, and is called vacuum aluminum-coated pigment (electrosilvering or be called VMP pigment or PVD pigment).
The production method of present substantial amounts of aluminum pigment substantially all adopts wet ball grinding to produce.In aluminum pigment manufacturing process, in (ball milling) and surface treatment process, (kneading) uses fatty acid (such as oleic acid or stearic acid) as surface conditioning agent.But the storage stability of the aluminum pigment of such gained and decay resistance need further raising.
Summary of the invention
Therefore, the present invention provides a kind of modified aluminium pigment, including following component: flake aluminum 60～70wt%, organic solvent 25～35wt% and the compositions 3～5wt% formed with fatty acid with feed oxygen functionalized graphene.
In a kind of specific embodiment, described modified aluminium pigment is made up of following three kinds of components, flake aluminum 60～70wt%, organic solvent 25～35wt% and described compositions 3～5wt%.
In a kind of specific embodiment, described modified aluminium pigment includes: flake aluminum 65～67wt%, organic solvent 30～32wt% and described compositions 3～5wt%.
In a kind of specific embodiment, the mass ratio of described compositions Raw graphene oxide and fatty acid is 1.5～2.5:100.
In a kind of specific embodiment, described flake aluminum is micron-stage sheet-like aluminium powder, and described organic solvent is C9 hydrocarbon organic solvent, and described fatty acid is C12 or above long-chain fatty acid.
In a kind of specific embodiment, described organic solvent is selected from C9 linear paraffin and C9 aromatic hydrocarbon, and described long-chain fatty acid is selected from oleic acid, stearic acid and lauric acid.
In a kind of specific embodiment, described compositions is that graphene oxide reacts at 80～90 DEG C with fatty acid and obtains.
The preparation method that the present invention also provides for a kind of modified aluminium pigment described above, comprises the steps,
Step A, prepare described compositions: graphene oxide and fatty acid 5 hours described compositionss derived above of stirring reaction at 80～90 DEG C；
Step B, by ball aluminum powder ball milling slabbing aluminium powder: the compositions that organic solvent, micron-size spherical aluminium powder and step A prepared adds ball milling in ball mill, by ball aluminum powder ball milling slabbing aluminium powder, obtains the filter cake containing flake aluminum after filter pressing；
Step C, sieve classification: the flake aluminum in step B gained filter cake is sieved the flake aluminum for the above different-diameter of two-stage by adding organic solvent；
Step D, filter pressing washing: the product organic solvent washing of step C and filter pressing；
Step E, kneading: the compositions that the filter cake after filter pressing washing in step D, organic solvent, step A prepare is sent into and in kneader, mediates the described modified aluminium pigment of formation.
In a kind of specific embodiment, screen cloth used in sieve classification step comprises 120 mesh sieves and 500 mesh sieves.
The modified aluminium pigment that invention provides has following performance compared to conventional aluminum pigment: excellent storage stability, excellent anti-lost silver performance and excellent decay resistance.
Detailed description of the invention
Therefore, the present invention provides a kind of modified aluminium pigment, including following component: flake aluminum 60～70wt%, organic solvent 25～35wt% and the compositions 3～5wt% formed with fatty acid with feed oxygen functionalized graphene.
Heretofore described flake aluminum is micro state aluminium powder in the form of sheets, is specially micron-stage sheet-like aluminium powder, and this micron-stage sheet-like aluminium powder is that fine spherical aluminum powder (micron-sized ball aluminum powder) obtains through wet ball grinding.Such as cross aluminium flake diameter corresponding to the micropowder of 120 mesh sieves at 125 microns, and aluminium flake diameter corresponding to the micropowder of crossing 500 mesh sieves is at 28 microns.Described organic solvent for playing dispersion micron-stage sheet-like aluminium powder effect in aluminum pigment, because aluminum is active metal and can not contact with moisture content, thus wet ball grinding process uses organic solvent dispersion aluminium powder, such as can passing through to be purchased the corresponding organic solvent of acquisition, this is all well known to a person skilled in the art content.Heretofore described graphene oxide is such as the liquid oxidatively Graphene being purchased.All comprising a certain amount of fatty acid in modified aluminium pigment product in existing aluminum pigment and the present invention, fatty acid plays lubrication and peptizaiton to aluminum pigment.
The present inventor is found through experiments, and described graphene oxide is directly added in aluminum pigment, be dispersed in aluminium powder or add and all can not obtain modified aluminium pigment product of the present invention in organic solvent.And can only be that graphene oxide first forms compositions with fatty acid response, again said composition is added in the process that the micron order aluminum ball sphere of powder wears into micron order aluminium flake powder, and added in kneading step process after ball milling, the performance (brightness of such as pigment) of the aluminum pigment of gained is just obviously improved.
In a kind of specific embodiment, described modified aluminium pigment is made up of following three kinds of components, flake aluminum 60～70wt%, organic solvent 25～35wt% and described compositions 3～5wt%.Modified aluminium pigment of the present invention can only comprise these three component, is certainly satisfied by the content of these three component under the premise required, can also add other auxiliary agent a certain amount of it is modifiied further in described modified aluminium pigment.
In a kind of specific embodiment, described modified aluminium pigment includes: flake aluminum 65～67wt%, organic solvent 30～32wt% and described compositions 3～5wt%.
In a kind of specific embodiment, the mass ratio of described compositions Raw graphene oxide and fatty acid is 1.5～2.5:100.When graphene oxide consumption is too low, the modified effect of aluminum pigment is inconspicuous；And graphene oxide consumption too high time, one is that the totle drilling cost of aluminum pigment is too high, and another is may therefore bring the change of solid content and affects the performance of aluminum pigment.As a same reason, described compositions typically constitutes from 3～5wt% in modified aluminium pigment, the too high or too low performance that all can affect aluminum pigment of composition levels.
In a kind of specific embodiment, described flake aluminum is micron-stage sheet-like aluminium powder, and described organic solvent is C9 hydrocarbon organic solvent, and described fatty acid is C12 or above long-chain fatty acid.
In a kind of specific embodiment, described organic solvent is selected from C9 linear paraffin and C9 aromatic hydrocarbon, and described long-chain fatty acid is selected from oleic acid, stearic acid and lauric acid.
In a kind of specific embodiment, described compositions is that graphene oxide reacts at 80～90 DEG C with fatty acid and obtains.
The preparation method that the present invention also provides for a kind of modified aluminium pigment described above, comprises the steps,
Step A, prepare described compositions: graphene oxide and fatty acid 5 hours described compositionss derived above of stirring reaction at 80～90 DEG C；At such a temperature, graphene oxide (such as oxygen-containing functional group therein) generates described compositions with fatty acid generation chemical reaction.
Step B, by ball aluminum powder ball milling slabbing aluminium powder: the compositions that organic solvent, micron-size spherical aluminium powder and step A prepared adds ball milling in ball mill, by ball aluminum powder ball milling slabbing aluminium powder, obtains the filter cake containing flake aluminum after filter pressing；
Step C, sieve classification: the flake aluminum in step B gained filter cake is sieved the flake aluminum for the above different-diameter of two-stage by adding organic solvent；
Step D, filter pressing washing: the product organic solvent washing of step C and filter pressing；
Step E, kneading: the compositions that the filter cake after filter pressing washing in step D, organic solvent, step A prepare is sent into and in kneader, mediates the described modified aluminium pigment of formation.
Skilled person will appreciate that, graphene oxide aliphatic acid composition in ball milling operation there may be and is partly dissolved in organic solvent and enters in filtrate and can not enter timely enter in product, but the graphene oxide aliphatic acid composition in kneading process then can in the final modified aluminium pigment product of fully synchronized entrance.Therefore, in the kneading step of the present invention, according to the component requirements of modified aluminium pigment product, in step D gained filter cake, fresh organic solvent needed for completion and graphene oxide aliphatic acid composition can obtain target product.
In a kind of specific embodiment, screen cloth used in sieve classification step comprises 120 mesh sieves and 500 mesh sieves.
Concrete, for instance it is prepared via a method which to obtain a kind of modified aluminium pigment in the present invention.
The preparation of graphene oxide oleic acid composition: be sequentially added into oleic acid and graphene oxide in glass reaction still, controls graphene oxide final content in the composition about 2%.Open blender, control rotating speed at about 200 revs/min.Temperature of reaction kettle is controlled at 80-90 degree, shut down after 24 hours and be cooled to room temperature, release product, stand 24 hours.The supernatant crosses 500 eye mesh screens to remove a small amount of impurity brought in raw material, collects filtrate and is the graphene oxide content graphene oxide oleic acid composition at about 2wt%.
Ball milling: in horizontal drum grinding machine, the high-carbon steel ball adopting diameter 1.0mm is situated between as grinding of ball grinder, by the fine spherical aluminum powder of 8 μm of < d50 < 10 μm by following weight ratio mix homogeneously: fine spherical aluminum powder: organic solvent: graphene oxide oleic acid composition=20～50: 80～200: 1～5, it is 40 revs/min of lower ball millings 24 hours at rotating speed, discharging, filter pressing, filtrate (is mainly organic solvent) and returns to the recycling of ball milling operation, and filter cake enters subsequent processing；
Fine sieve classification；Filter cake enters sieve classification operation, after filter cake adds organic solvent dissolution, first cross 120 mesh sieves (particle diameter is less than 125 microns), after 500 mesh sieves (particle diameter is less than 28 microns), material at different levels (120 orders and 500 order two-stage materials that fineness degree is different will form the aluminum pigment product of different-grain diameter respectively) will be sieved and use pressure filter filter pressing, drying up, filtrate cycle is use again, and filter cake enters subsequent processing；
Filter pressing is washed: wash with fresh organic solvent；Filtrate returns to screening operation and recycles；
Mediate: the filter cake after washing enters kneading process and carries out surface treatment, and the purpose of kneading is so that three kinds of component mix homogeneously in aluminum pigment, and has the effect that aluminium flake is polished simultaneously.Concrete operations: be sequentially added into filter cake, fresh organic solvent and graphene oxide oleic acid composition in kneader, mediate 45-60 minute.The ultimate constituent making material controls the component required by modified aluminium pigment product.Obtaining paste or the paste containing dry powder after kneading, namely packaging becomes graphene oxide modified aluminium pigment product.
Embodiment
?In horizontal ball mill, load 1.0mm steel ball 2000kg, add organic solvent (200# solvent naphtha) 300kg, D50It is the nitrogen atomization fine spherical aluminum powder 80kg of 8.8 μm, graphene oxide oleic acid composition 4kg, ball milling 24h, discharging, screening, cross 500 order material filter pressings, filtrate returns ball milling operation.Filter cake is through mediating surface treatment (when mediating delivery of supplemental oxygen functionalized graphene oleic acid composition).Packaging is aluminum paste product.
Comparative example
?In horizontal ball mill, load 1.0mm steel ball 2000kg, add organic solvent (200# solvent naphtha) 300kg, D50It is the nitrogen atomization fine spherical aluminum powder 80kg of 8.8 μm, oleic acid 4kg, ball milling 24h, discharging, screening, cross 500 order material filter pressings, filtrate returns ball milling operation.Filter cake is through mediating surface treatment (supplementing oleic acid when mediating).Packaging is aluminum paste product.
Embodiment and comparative example product performance index contrast in Table 1.
Table 1
As seen from Table 1, modified aluminium pigment provided by the invention has following performance compared to conventional aluminum pigment: excellent storage stability, excellent anti-lost silver performance (effectively preventing aluminium powder from coming off, to improve aluminium paste adhesive force in pigment) and excellent decay resistance.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (9)
1. a modified aluminium pigment, including following component: flake aluminum 60～70wt%, organic solvent 25～35wt% and the compositions 3～5wt% formed with fatty acid with feed oxygen functionalized graphene.
2. modified aluminium pigment according to claim 1, it is characterised in that described modified aluminium pigment is made up of following three kinds of components, flake aluminum 60～70wt%, organic solvent 25～35wt% and described compositions 3～5wt%.
3. modified aluminium pigment according to claim 1, it is characterised in that described modified aluminium pigment includes: flake aluminum 65～67wt%, organic solvent 30～32wt% and described compositions 3～5wt%.
4. modified aluminium pigment according to any one in claims 1 to 3, it is characterised in that the mass ratio of described compositions Raw graphene oxide and fatty acid is 1.5～2.5:100.
5. modified aluminium pigment according to any one in Claims 1 to 4, it is characterised in that described flake aluminum is micron-stage sheet-like aluminium powder, described organic solvent is C9 hydrocarbon organic solvent, and described fatty acid is C12 or above long-chain fatty acid.
6. modified aluminium pigment according to claim 5, it is characterised in that described organic solvent is selected from C9 linear paraffin and C9 aromatic hydrocarbon, described long-chain fatty acid is selected from oleic acid, stearic acid and lauric acid.
7. modified aluminium pigment according to any one in claim 1～6, it is characterised in that described compositions is graphene oxide with fatty acid reacts at 80～90 DEG C and obtain.
8. a preparation method for modified aluminium pigment as described in any one in claim 1～7, comprises the steps,
Step A, prepare described compositions: graphene oxide and fatty acid 5 hours described compositionss derived above of stirring reaction at 80～90 DEG C；
Step B, by ball aluminum powder ball milling slabbing aluminium powder: the compositions that organic solvent, micron-size spherical aluminium powder and step A prepared adds ball milling in ball mill, by ball aluminum powder ball milling slabbing aluminium powder, obtains the filter cake containing flake aluminum after filter pressing；
Step C, sieve classification: the flake aluminum in step B gained filter cake is sieved the flake aluminum for the above different-diameter of two-stage by adding organic solvent；
Step D, filter pressing washing: the product organic solvent washing of step C and filter pressing；
Step E, kneading: the compositions that the filter cake after filter pressing washing in step D, organic solvent, step A prepare is sent into and in kneader, mediates the described modified aluminium pigment of formation.
9. method according to claim 8, it is characterised in that screen cloth used in sieve classification step comprises 120 mesh sieves and 500 mesh sieves.
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| CN109161228A (en) * | 2018-07-19 | 2019-01-08 | 中国人民解放军92228部队 | A kind of preparation method and application method of stearic acid modified graphene |
| CN109694591A (en) * | 2019-01-03 | 2019-04-30 | 长沙族兴新材料股份有限公司 | It is modified aluminium pigment and preparation method thereof and the coating comprising it |
| CN110408269A (en) * | 2019-08-01 | 2019-11-05 | 太仓市洪宇新材料科技有限公司 | A kind of strong corrosive water aluminum-silver slurry and preparation method thereof |
| WO2020245570A1 (en) | 2019-06-05 | 2020-12-10 | Silberline Limited | New product comprising coated substrate particles |
| CN113980495A (en) * | 2021-11-29 | 2022-01-28 | 曲靖华益兴新材料有限公司 | Safe coated aluminum powder for aluminum pigment production and preparation method thereof |
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| EP4051731A1 (en) | 2019-10-30 | 2022-09-07 | The Procter & Gamble Company | Molded article with metallic appearance |
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Denomination of invention: The invention relates to a modified aluminum pigment and a preparation method thereof Effective date of registration: 20210918 Granted publication date: 20180525 Pledgee: Ningxiang sub branch of Bank of Changsha Co.,Ltd. Pledgor: ZUXING NEW MATERIAL Co.,Ltd. Registration number: Y2021980009561 |
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Denomination of invention: A modified aluminum pigment and its preparation method Granted publication date: 20180525 Pledgee: Ningxiang sub branch of Bank of Changsha Co.,Ltd. Pledgor: ZUXING NEW MATERIAL CO.,LTD. Registration number: Y2024980013898 |