CN105001682A - Method for raising dispersity of carbon black - Google Patents
Method for raising dispersity of carbon black Download PDFInfo
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- CN105001682A CN105001682A CN201510390272.1A CN201510390272A CN105001682A CN 105001682 A CN105001682 A CN 105001682A CN 201510390272 A CN201510390272 A CN 201510390272A CN 105001682 A CN105001682 A CN 105001682A
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- carbon black
- carbon
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Abstract
The invention discloses a method for raising dispersity of carbon black. The method is characterized by comprising the following steps: (1) a structure control agent is added into carbon black; (2) carbon black and the structure control agent are uniformly mixed; (3) the mixture undergoes micro-nano dispersion; (4) dispersion fineness grade is controlled by a grading device; and (5) graded carbon black is collected so as to obtain highly-dispersed carbon black. The carbon black produced by the method has excellent dispersity and can be uniformly dispersed in a material without additional addition of a dispersant or strong oxidation treatment. In addition, content of 45-micron residue on sieve is low and the carbon black can completely pass through a 325-mesh sieve. By the method, dispersity of carbon black is enhanced. The production technology is simple, has strong operationality and can be rapidly popularized and applied.
Description
Technical field
The present invention relates to a kind of production method improving carbon black dispersion.
Background technology
Carbon black is that hydrocarbons generates through incomplete combustion or cracking.Carbon black is of many uses, except for except rubber item reinforcement, also can be used for other material, as coating, paint, ink, ink powder, electronic product, plastics, fiber, battery etc., gives painted, anti-ultraviolet ageing, the antistatic or conductivity needed for goods.
Carbon black is as the typical nano material of one, primary partical size little (usual <100nm), surface energy are high, very easily be gathered into larger particle, be difficult to stable dispersion in different system, limit giving full play to of carbon black performance, have influence on the quality and performance of downstream product, become a large bottleneck of carbon black application.The dispersion of carbon black is mainly limited by three factors: the type of the characteristic of carbon black itself, carrier or dispersion medium, dispersing technology and dispersing apparatus.When kind of carbon black is certain, at present mainly through adding dispersant-coated, grafting or carrying out Strong oxdiative process to improve the dispersing property of carbon black.Dispersant-coated or grafting process are generally carried out under liquid phase, also need follow-up drying program, make production cost higher; Strong oxdiative process generally uses strong acid or ozone, easily pollutes problem.
Summary of the invention
For the technical problem of above-mentioned existence, the invention provides a kind of method improving carbon black dispersion, by carrying out Passivation Treatment and structure regulating to carbon black, improving the dispersiveness of carbon black, strengthening the application performance of carbon black.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of method improving carbon black dispersion, is characterized in that comprising the following steps:
(1) in carbon black, constitution controller is added;
(2) by carbon black and constitution controller Homogeneous phase mixing;
(3) compound is carried out micro-nano dispersion;
(4) fineness of dispersion rank is controlled by sorting equipment;
(5) collect classification carbon black out namely to secure satisfactory grades loose property carbon black.
Improve as one, in step (1), carbon structure control agent is nano carbon-base material.By introducing dissimilar materials, control the structure (neck dibutyl phthalate absorption value) of carbon black on the one hand, change the size distribution of carbon black, reduce the contact area between carbon black and carbon black particle on the other hand, break the agglomeration balance between single carbon black fine particle, reduce the agglomerating force between carbon black pellet, improve the dispersing property of carbon black.
Improve as one, described carbon-based material is at least one in carbon nanotube, carbon fiber, Graphene, carbon black.
Preferred as one, in step (1), carbon structure control agent is one or several in kaolin, calcium carbonate superfine powder, potter's clay, diatomite.
Preferred as one, in step (1), the mass percent of constitution controller is 1 ~ 30%.Constitution controller addition scope is large, makes carbon structure adjust space on the one hand large, is conducive to raising dispersed, is also conducive to production control cost on the other hand.
Preferred as one, partition size is set to <10 μm in (4) by step.Granularity is arranged on 10 μm can meet the requirement of overwhelming majority application to carbon black dispersion, meticulously can reduce production efficiency, increases production cost.
Usefulness of the present invention is: the carbon black utilizing the method disclosed in the present to produce has excellent dispersiveness, without the need to additionally adding dispersion agent or Strong oxdiative process just can be dispersed in material, and 45 μm of screeningss are extremely low, can all by 325 eye mesh screens.
Adopt present method to improve carbon black dispersion, production technique is simple, and strong operability, can apply rapidly.
Embodiment
The present invention is described in detail below.
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides one in carbon black products, add carbon structure control agent, then under machinery, physics, chemical action, carry out passivation to carbon black, reduce carbon blacksurface active, to improve the method for carbon black dispersion, the method comprises:
(1) in carbon black, add the constitution controller of 1 ~ 30%; Carbon structure control agent is nano carbon-base or other micro Nano materials.Described carbon-based material is one or several in carbon nanotube, carbon fiber, Graphene, carbon black; Other micro Nano materials described are one or several in kaolin, calcium carbonate superfine powder, potter's clay, diatomite.
(2) by carbon black and constitution controller Homogeneous phase mixing;
(3) compound is carried out micro-nano dispersion;
(4) control fineness of dispersion rank by sorting equipment, partition size is set below 10 μm;
(5) collect classification carbon black out namely to secure satisfactory grades loose property carbon black.
Embodiment 1:
Get 100 kg ordinary carbon black A, add multi-walled carbon nano-tubes 1kg again, Homogeneous phase mixing 1 hour in mixer, then dispersion machine is put in mixing and uniform material, dispersing speed 1000r/min, grading wheel rotating speed 1200r/min, the carbon black being carried out Task-size Controlling by grading wheel obtains black B through bag filter collection.The dispersiveness of A, B carbon black is tested by laser particle analyzer, and its d97 particle size values is less in Table 1(particle diameter, dispersed better under showing the same terms).
Embodiment 2:
Get 50 kg ordinary carbon black C, add N330 carbon black 15kg again, Homogeneous phase mixing 30 minutes in mixer, then dispersion machine is put in mixing and uniform material, dispersing speed 800r/min, grading wheel rotating speed 1500r/min, the carbon black being carried out Task-size Controlling by grading wheel obtains carbon black D through bag filter collection.The dispersiveness of C, D carbon black is tested by laser particle analyzer, and its d97 particle size values is less in Table 1(particle diameter, dispersed better under showing the same terms).
Embodiment 3:
Get 500 kg ordinary carbon black E, add nm-class active calcium carbonate 25kg again, Homogeneous phase mixing 15 minutes in mixer, then dispersion machine is put in mixing and uniform material, dispersing speed 1200r/min, grading wheel rotating speed 1300r/min, the carbon black being carried out Task-size Controlling by grading wheel obtains carbon black F through bag filter collection.The dispersiveness of E, F carbon black is tested by laser particle analyzer, and its d97 particle size values is less in Table 1(particle diameter, dispersed better under showing the same terms).
D97 particle size values before and after table 1 carbon black dispersion
The interpolation of carbon structure control agent in the present invention, micro-nano dispersion and to carry out size classification process be improve the key of carbon black dispersion.First according to the consistency of carbon black from different goods, selectivity adds carbon structure control agent, reduces carbon black nodulizing power; Then compound is added material bin, the screw feeder controlled by motor with stepless speed regulation is quantitatively sent in dispersing apparatus, there is fierce physics, chemical action with the epitrochanterian Wimet ram hammer of high speed rotating and the prionodont gear ring (stator) that is contained in its periphery, and aggravate dispersion process in high speed rotating airflow field.Material disperses rapidly under machinery, physical external force effect, and dispersion powder surface, under action of high-speed airflow, passivation occurs, and stops particle generation secondary agglomeration, and around grading wheel, carries out classification with upstream.The rotation of grading wheel forms forced vortex field, and according to the principle that centrifugal force and centripetal force balance, the fine powder reaching dispersion requirement enters gathering system by grading wheel, and coarse grain then returns to and carries out twice dispersing.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. improve a method for carbon black dispersion, it is characterized in that comprising the following steps:
(1) in carbon black, constitution controller is added;
(2) by carbon black and constitution controller Homogeneous phase mixing;
(3) compound is carried out micro-nano dispersion;
(4) fineness of dispersion rank is controlled by sorting equipment;
(5) collect classification carbon black out namely to secure satisfactory grades loose property carbon black.
2. a kind of method improving carbon black dispersion according to claim 1, is characterized in that: in step (1), carbon structure control agent is nano carbon-base material.
3. a kind of method improving carbon black dispersion according to claim 2, is characterized in that: described carbon-based material is one or several in carbon nanotube, carbon fiber, Graphene, carbon black.
4. a kind of method improving carbon black dispersion according to claim 1, is characterized in that: in step (1), carbon structure control agent is one or several in kaolin, calcium carbonate superfine powder, potter's clay, diatomite.
5. a kind of method improving carbon black dispersion according to claim 1, is characterized in that: in step (1), the mass percent of constitution controller is 1 ~ 30%.
6. a kind of method improving carbon black dispersion according to claim 1, is characterized in that: partition size is set to <10 μm in (4) by step.
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| CN201510390272.1A CN105001682A (en) | 2015-07-06 | 2015-07-06 | Method for raising dispersity of carbon black |
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| CN201510390272.1A CN105001682A (en) | 2015-07-06 | 2015-07-06 | Method for raising dispersity of carbon black |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106752119A (en) * | 2016-12-23 | 2017-05-31 | 青岛黑猫炭黑科技有限责任公司 | A kind of preparation method of carbon black nano material |
| CN107722346A (en) * | 2017-11-07 | 2018-02-23 | 苏州宝化炭黑有限公司 | Modified carbon black composite and its preparation method and application |
| CN109880405A (en) * | 2019-04-01 | 2019-06-14 | 济南圣泉集团股份有限公司 | A kind of modified carbon black particle and its preparation method and application |
| CN113105762A (en) * | 2021-04-13 | 2021-07-13 | 云南云维飞虎化工有限公司 | Method for improving dispersibility of carbon black |
| CN113321966A (en) * | 2021-06-01 | 2021-08-31 | 安徽德瑞新材料科技有限公司 | Special carbon black material for UV (ultraviolet) photocuring nano metal conductive ink |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106752119A (en) * | 2016-12-23 | 2017-05-31 | 青岛黑猫炭黑科技有限责任公司 | A kind of preparation method of carbon black nano material |
| CN106752119B (en) * | 2016-12-23 | 2018-10-09 | 青岛黑猫炭黑科技有限责任公司 | A kind of preparation method of carbon black nano material |
| CN107722346A (en) * | 2017-11-07 | 2018-02-23 | 苏州宝化炭黑有限公司 | Modified carbon black composite and its preparation method and application |
| CN109880405A (en) * | 2019-04-01 | 2019-06-14 | 济南圣泉集团股份有限公司 | A kind of modified carbon black particle and its preparation method and application |
| CN113105762A (en) * | 2021-04-13 | 2021-07-13 | 云南云维飞虎化工有限公司 | Method for improving dispersibility of carbon black |
| CN113321966A (en) * | 2021-06-01 | 2021-08-31 | 安徽德瑞新材料科技有限公司 | Special carbon black material for UV (ultraviolet) photocuring nano metal conductive ink |
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Application publication date: 20151028 |