CN106179711B - The automatic dispersal device of carbon nanotube conducting slurry - Google Patents
The automatic dispersal device of carbon nanotube conducting slurry Download PDFInfo
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- CN106179711B CN106179711B CN201610780015.3A CN201610780015A CN106179711B CN 106179711 B CN106179711 B CN 106179711B CN 201610780015 A CN201610780015 A CN 201610780015A CN 106179711 B CN106179711 B CN 106179711B
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- carbon nanotube
- electrode
- ceramic grinding
- defoaming agent
- grinding bucket
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
Abstract
This application discloses the automatic dispersal device of carbon nanotube conducting slurry, including ceramic grinding bucket, ceramic grinding bucket bottom is equipped with the controller of built-in timer, and ceramic grinding bucket sidewall periphery uniform winding has snakelike circulating water pipe；Carbon nanotube conducting slurry, liquid level sensor and temperature sensor are filled in ceramic grinding bucket；The bottom of defoaming agent holding vessel is equipped with liquid outlet, is provided with solenoid valve and flow sensor on liquid outlet；Dispersion effect tester includes electrode a, electrode b and resistance instrument；After constant distance between electrode a and electrode b, electrode a and electrode b are drawn by conducting wire respectively, it is connected with resistance instrument.The application can be such that the defoaming agent in dispersion process adds automatically, and can provide the time node of carbon nano tube paste dispersion stirring, avoid excessive agitation.
Description
Technical field
This application involves one of carbon nano tube paste production process assistance test instrument, especially a kind of carbon nanotube
The automatic dispersal device of electrocondution slurry.
Background technique
Carbon nanotube is as monodimension nanometer material, and light-weight, hexagonal structure connection is perfect, has many abnormal power
, electricity and chemical property.
Carbon nanotube has good mechanical property, and it is 100 times of steel that CNTs tensile strength, which reaches 50~200GPa, close
Degree but only has the 1/6 of steel, an order of magnitude at least higher than ordinary graphite fiber；Its elasticity modulus is up to 1TPa, with diamond
Elasticity modulus it is suitable, about 5 times of steel.For the carbon nanotube of the single wall with ideal structure, tensile strength is about
800GPa.Although the structure of carbon nanotube is similar to the structure of high molecular material, its structure is more stable than high molecular material
It is more.Carbon nanotube is the material with highest specific strength that can be prepared at present.If will be using Other Engineering material as matrix and carbon
Composite material is made in nanotube, and composite material exhibits can be made to go out good intensity, elasticity, fatigue resistance and isotropism, to multiple
The performance of condensation material brings great improvement.
The hardness of carbon nanotube is worked as with diamond phase, but possesses good flexibility, can stretch.In October, 2000, beauty
The researcher of Pennsylvania State University of state claims, and the intensity of carbon nanotube is 100 times higher than the intensity of same volume steel, after weight but only has
1/6 to the 1/7 of person.Carbon nanotube is thus claimed " super fiber ".Carbon nanotube was once placed in by the researcher of Moscow State University
Under the hydraulic pressure of 1011 MPa (pressure for being equivalent to underwater ten thousand metres depth), due to huge pressure, carbon nanotube is crushed.It removes
After going pressure, carbon nanotube has recovered immediately shape as spring, shows good toughness.This enlightenment people can use
Carbon nanotube manufactures frivolous spring, uses on automobile, train as damping device, can mitigate weight significantly.
Carbon nanotube has good conductive property, since the structure of carbon nanotube and the lamellar structure of graphite are identical, institute
With with good electric property, 10,000 times usually up to copper of conductivity.
Carbon nanotube has good heat transfer property, and carbon nanotube can synthesize the heat conducting material of high anisotropy.Separately
Outside, carbon nanotube has higher thermal conductivity, as long as adulterating micro carbon nanotube in the composite, the heat of the composite material
Conductance will be likely to be obtained very big improvement.
Since carbon nanotube has above-mentioned many excellent characteristics, therefore the research of carbon nanotube and nano material in recent years
More and more deep, the wide application prospect of carbon nanotube is also constantly shown.
Application No. is 201510950204.6 Chinese invention patent application, innovation and creation disclosed on May 4th, 2016
Entitled " a kind of lithium battery carbon nano tube paste and preparation method thereof ", the ingredient in carbon nano tube paste is carbon nanometer
Pipe, carbon black, surfactant, thickener, solvent.Its proportion is carbon nanotube: carbon black: surfactant: thickener: solvent=
(3 ~ 10wt%): (0 ~ 8wt%): (0.1 ~ 1.3wt%): (0 ~ 1wt%): (80 ~ 96wt%), using the proportion according to mixing work
Skill prepares evenly dispersed uniform carbon nano tube paste.Under the action of surface-active, thickener, using high speed machine stirring and
The mode combined is stirred by ultrasonic, greatly improves conductive agent degree of scatter.The carbon nanotube conducting agent for being difficult to disperse is carried out
Slurry it is pre-prepared, reach preferable dispersion effect, reduce in next step be used in cell size in stirring requirement, it is reachable
To preferable mixed effect.
Application No. is 201410114650.9 Chinese invention patent application, invention wounds disclosed on June 25th, 2014
Entitled " the carbon nanotube conducting slurry and its preparation method and application " made, carbon nanotube conducting slurry by conductive functional filler,
Dispersing agent, solvent are by conductive functional filler: dispersing agent: solvent=2~10:0.2~5:85~97.8 mass ratio is formulated.It leads
Electricity Functional body is spherical carbon nanotube group, spherical carbon nanotube aggregate or itself and carbon black, acetylene black, carbon fiber, conductive stone
The combination of one or more of ink, graphene.Preparation method is to add the conductive functional filler and dispersing agent in the ratio
Enter in solvent and stir, obtain premix, premix is ground in grinder, formation includes that multiple partial sizes are 0.1~3 micron
Spherical carbon nanotube group electrocondution slurry.The carbon nanotube conducting slurry can be used as the conduction of lithium battery positive and negative pole material
Agent.
The mode that above-mentioned patent application, the stirring of the first high speed machine and ultrasonic agitation combine, is mainly suitable for small lot
Production or the low aqueous dispersion of viscosity use, and mass production is all made of second of sand mill substantially and is dispersed.
When being ground with sand mill, currently, effective method not yet, can accurately and effectively judge that carbon nanotube is starched
The dispersion effect of material, it is even more impossible to accurately provide the time node etc. of carbon nano tube paste dispersion stirring.Therefore it is starched in carbon nanotube
Expect in pulping process, is badly in need of the detection method of a kind of pair of carbon nano tube paste dispersion effect, the effect of energy real-time detection slurry dispersion
Fruit, and can accurately provide the node time of slurry dispersion.
In addition, it is gentle either to generate heat in dispersion process using ultrasonic disperse or sand mill grinding distribution
Bubble, to influence dispersion effect.Therefore, it in dispersion process, needs to add defoaming agent and is defoamed, defoaming agent is substantially equal at present
It is most of for addition primary before dispersion manually to add.Defoaming agent additive amount is unable to control, and in dispersion process, with
Jitter time extend, defoaming agent is readily volatilized, and defoaming effect is poor, while amount of heat can be generated in dispersion process, thus meeting
Accelerate defoaming agent volatilization, and then defoaming effect is made to have a greatly reduced quality.
Summary of the invention
The application technical problems to be solved are in view of the above shortcomings of the prior art, and to provide a kind of carbon nanotube conducting
The automatic dispersal device of slurry, the automatic dispersal device of carbon nanotube conducting slurry can be such that the defoaming agent in dispersion process adds automatically
Add, and defoaming agent additive amount can be automatically determined according to the liquid level amount and temperature of carbon nanotube conducting slurry, and can automatically control and divide
The heat that the process of dissipating generates.In addition, can accurately and effectively judge the dispersion effect of carbon nano tube paste, carbon can be provided and received
The time node of mitron slurry dispersion stirring, avoids excessive agitation.
In order to solve the above technical problems, the application the technical solution adopted is that:
A kind of automatic dispersal device of carbon nanotube conducting slurry, including ceramic grinding bucket, carbon nanotube conducting slurry, defoaming
Agent holding vessel and dispersion effect tester.
Ceramic grinding bucket bottom is provided with controller, is built-in with timer in controller；Ceramic grinding bucket sidewall periphery is equal
It is even to be wound with snakelike circulating water pipe；It is filled with carbon nanotube conducting slurry in ceramic grinding bucket, is led for detecting carbon nanotube
The liquid level sensor of plasma-based feed liquid position and temperature sensor for detecting carbon nanotube conducting slurry temperature.
The top of ceramic grinding bucket is arranged in defoaming agent holding vessel, and the bottom of defoaming agent holding vessel is provided with direction ceramics and grinds
Liquid outlet in grinding barrel is provided with solenoid valve and flow sensor on liquid outlet；Wherein, the valve opening degree of solenoid valve can be adjusted
Section, flow sensor are used to detect the defoaming agent flux flowed into ceramic grinding bucket.
Dispersion effect tester includes electrode a, electrode b and resistance instrument；The inner wall top of ceramic grinding bucket is arranged in electrode a
Portion and the liquid level face lower section for being located at carbon nanotube conducting slurry；The inner wall bottom of ceramic grinding bucket, electrode a is arranged in electrode b
After the constant distance between electrode b, electrode a and electrode b are drawn by conducting wire respectively, it is connected with resistance instrument.
Circulating water pipe, liquid level sensor, temperature sensor, solenoid valve, flow sensor and resistance instrument with controller phase
Connection.
Water in the circulating water pipe can be adjusted.
The circulating water pipe is made of side by side biexhaust pipe.
Every root canal can be automatically turned on and be closed in biexhaust pipe, and the water flow in every root canal can be adjusted.
Defoaming agent holding vessel is hermetically sealed can.
The application after adopting the above structure, has the following beneficial effects:
1. above-mentioned liquid level sensor can be used to detect carbon nanotube conducting slurry liquid level, and the liquid level data transmitting that will test
A controller, controller will determine defoaming agent in process of lapping according to the liquid level data of detection and the milling time of setting
Additive amount and the data such as adding speed.
2. the setting of above-mentioned temperature sensor, the temperature that can be used to detect the temperature of carbon nanotube conducting slurry, and will test
Degree increases or reduces water flow or control Double water drainage tube simultaneously according to a controller, controller one side instruction cycles water pipe is transmitted
Open etc., automatically control the heat that dispersion process generates.It on the other hand, will be according to the temperature data of detection, such as temperature drift
Deng additive amount and the adding speed etc. of defoaming agent will be increased.
3. the setting of above-mentioned circulating water pipe can automatically adjust circulating water flow according to carbon nanotube conducting slurry temperature, into
And control cooling effect.
4. the setting of above-mentioned defoaming agent holding vessel, solenoid valve and flow sensor, then can automatically control the drop of defoaming agent
Beam amount and drip velocity etc..
5. above-mentioned dispersion effect tester is utilizing ceramic grinding bucket non-conductive, and the characteristic of carbon nanotube powder conduction
Under the premise of, make full use of the nonconducting characteristic of organic dispersion solvent in carbon nanotube conducting slurry, when carbon nanotube powder not
It is uniformly mixed with nonconducting organic dispersion solvent, as the time of grinding elapses, resistance value measured by resistance instrument will be by big
Become smaller, when resistance value is held essentially constant in one section of setting time, the dispersion effect of slurry is best, and also as slurry divides
Scattered final node.Above-mentioned electrode a and electrode b is arranged at different depth, therefore can be to the slurry of ceramic grinding bucket from top to bottom
Material is tested, and test reliability is high.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the automatic dispersal device of carbon nanotube conducting slurry of the application.
Specific embodiment
The present application will be further described in detail with specific better embodiment with reference to the accompanying drawing.
As shown in Figure 1, a kind of automatic dispersal device of carbon nanotube conducting slurry, wherein having ceramic grinding bucket 1, circulating water pipe
11, liquid level sensor 12, controller 13, temperature sensor 14, carbon nanotube conducting slurry 2, defoaming agent holding vessel 3, liquid outlet
31, the technical characteristics such as solenoid valve 32, flow sensor 33, electrode a 41, electrode b 42, resistance instrument 43, conducting wire 44.
A kind of automatic dispersal device of carbon nanotube conducting slurry, including ceramic grinding bucket, carbon nanotube conducting slurry, defoaming
Agent holding vessel and dispersion effect tester.
Ceramic grinding bucket bottom is provided with controller, is built-in with timer in controller；Ceramic grinding bucket sidewall periphery is equal
It is even to be wound with snakelike circulating water pipe；It is filled with carbon nanotube conducting slurry in ceramic grinding bucket, is led for detecting carbon nanotube
The liquid level sensor of plasma-based feed liquid position and temperature sensor for detecting carbon nanotube conducting slurry temperature.
The top of ceramic grinding bucket is arranged in defoaming agent holding vessel, and the bottom of defoaming agent holding vessel is provided with direction ceramics and grinds
Liquid outlet in grinding barrel is provided with solenoid valve and flow sensor on liquid outlet；Wherein, the valve opening degree of solenoid valve can be adjusted
Section, flow sensor are used to detect the defoaming agent flux flowed into ceramic grinding bucket.
Dispersion effect tester includes electrode a, electrode b and resistance instrument；The inner wall top of ceramic grinding bucket is arranged in electrode a
Portion and the liquid level face lower section for being located at carbon nanotube conducting slurry；The inner wall bottom of ceramic grinding bucket, electrode a is arranged in electrode b
After the constant distance between electrode b, electrode a and electrode b are drawn by conducting wire respectively, it is connected with resistance instrument.
Circulating water pipe, liquid level sensor, temperature sensor, solenoid valve, flow sensor and resistance instrument with controller phase
Connection.
Water in the circulating water pipe can be adjusted.
The circulating water pipe is made of side by side biexhaust pipe.
Every root canal can be automatically turned on and be closed in biexhaust pipe, and the water flow in every root canal can be adjusted.
Defoaming agent holding vessel is hermetically sealed can.
The application after adopting the above structure, has the following beneficial effects:
1. above-mentioned liquid level sensor can be used to detect carbon nanotube conducting slurry liquid level, and the liquid level data transmitting that will test
A controller, controller will determine defoaming agent in process of lapping according to the liquid level data of detection and the milling time of setting
Additive amount and the data such as adding speed.
2. the setting of above-mentioned temperature sensor, the temperature that can be used to detect the temperature of carbon nanotube conducting slurry, and will test
Degree increases or reduces water flow or control Double water drainage tube simultaneously according to a controller, controller one side instruction cycles water pipe is transmitted
Open etc., automatically control the heat that dispersion process generates.It on the other hand, will be according to the temperature data of detection, such as temperature drift
Deng additive amount and the adding speed etc. of defoaming agent will be increased.
3. the setting of above-mentioned circulating water pipe can automatically adjust circulating water flow according to carbon nanotube conducting slurry temperature, into
And control cooling effect.
4. the setting of above-mentioned defoaming agent holding vessel, solenoid valve and flow sensor, then can automatically control the drop of defoaming agent
Beam amount and drip velocity etc..
5. above-mentioned dispersion effect tester is utilizing ceramic grinding bucket non-conductive, and the characteristic of carbon nanotube powder conduction
Under the premise of, make full use of the nonconducting characteristic of organic dispersion solvent in carbon nanotube conducting slurry, when carbon nanotube powder not
It is uniformly mixed with nonconducting organic dispersion solvent, as the time of grinding elapses, resistance value measured by resistance instrument will be by big
Become smaller, when resistance value is held essentially constant in one section of setting time, the dispersion effect of slurry is best, and also as slurry divides
Scattered final node.Above-mentioned electrode a and electrode b is arranged at different depth, therefore can be to the slurry of ceramic grinding bucket from top to bottom
Material is tested, and test reliability is high.
The preferred embodiment of the application is described in detail above, still, during the application is not limited to the above embodiment
Detail a variety of equivalents can be carried out to the technical solution of the application in the range of the technology design of the application, this
A little equivalents belong to the protection scope of the application.
Claims (2)
1. a kind of automatic dispersal device of carbon nanotube conducting slurry, it is characterised in that: including ceramic grinding bucket, carbon nanotube conducting
Slurry, defoaming agent holding vessel and dispersion effect tester；
Ceramic grinding bucket bottom is provided with controller, is built-in with timer in controller；Ceramic grinding bucket sidewall periphery uniformly twines
It is wound with snakelike circulating water pipe；Carbon nanotube conducting slurry is filled in ceramic grinding bucket, for detecting carbon nanotube conducting slurry
The liquid level sensor of feed liquid position and temperature sensor for detecting carbon nanotube conducting slurry temperature；
The top of ceramic grinding bucket is arranged in defoaming agent holding vessel, and the bottom of defoaming agent holding vessel, which is provided with, is directed toward ceramic grinding bucket
Interior liquid outlet is provided with solenoid valve and flow sensor on liquid outlet；Wherein, the valve opening degree of solenoid valve can be adjusted,
Flow sensor is used to detect the defoaming agent flux flowed into ceramic grinding bucket；
Dispersion effect tester includes electrode a, electrode b and resistance instrument；Electrode a be arranged at the top of the inner wall of ceramic grinding bucket and
Below the liquid level face of carbon nanotube conducting slurry；The inner wall bottom of ceramic grinding bucket, electrode a and electricity is arranged in electrode b
After constant distance between the b of pole, electrode a and electrode b are drawn by conducting wire respectively, it is connected with resistance instrument；
Circulating water pipe, liquid level sensor, temperature sensor, solenoid valve, flow sensor and resistance instrument are connected with controller；
Water in the circulating water pipe can be adjusted；The circulating water pipe is made of side by side biexhaust pipe；Every root canal can be certainly in biexhaust pipe
It is dynamic to open and close, and the water flow in every root canal can be adjusted；
Liquid level sensor can be used to detect carbon nanotube conducting slurry liquid level, and the liquid level data that will test transmits a controller,
Controller will according to the liquid level data of detection and the milling time of setting, determine the additive amount of defoaming agent in process of lapping with
And adding speed data；
Temperature sensor can be used to detect the temperature of carbon nanotube conducting slurry, and the temperature data transmitting control that will test
Device, controller one side instruction cycles water pipe increases or reduces water flow or control Double water drainage tube opens simultaneously, and automatically controls and divides
The heat that the process of dissipating generates；On the other hand, it will will increase additive amount and the addition of defoaming agent according to the temperature data of detection
Speed；
Circulating water pipe can automatically adjust circulating water flow, and then control cooling effect according to carbon nanotube conducting slurry temperature；
The combination of defoaming agent holding vessel, solenoid valve and flow sensor can then automatically control the instillation flow and drop of defoaming agent
Infuse speed；
Dispersion effect tester is utilizing ceramic grinding bucket non-conductive, and under the premise of the characteristic of carbon nanotube powder conduction, sufficiently
Using the nonconducting characteristic of organic dispersion solvent in carbon nanotube conducting slurry, when carbon nanotube powder does not have with nonconducting
Machine dispersion solvent is uniformly mixed, and as the time of grinding elapses, resistance value measured by resistance instrument will work as resistance value from large to small
When being held essentially constant in one section of setting time, the dispersion effect of slurry is best, also as slurry dispersion final node；It will
Electrode a and electrode b is arranged at different depth, can test the slurry of ceramic grinding bucket from top to bottom.
2. the automatic dispersal device of carbon nanotube conducting slurry according to claim 1, it is characterised in that: the defoaming agent storage
Depositing tank is hermetically sealed can.
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| CN107817275B (en) * | 2017-09-06 | 2020-05-19 | 山东科技大学 | Concrete segregation detection device and method |
| CN108760827A (en) * | 2018-07-13 | 2018-11-06 | 广东天劲新能源科技股份有限公司 | A kind of device and method of testing size electric conductivity |
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| DE2712210A1 (en) * | 1977-03-19 | 1978-09-21 | Eirich Hubert | METHOD OF MOISTURE MEASUREMENT OF FLOWABLE MATERIAL AND DEVICE FOR CARRYING OUT THE METHOD |
| CN201969533U (en) * | 2011-01-12 | 2011-09-14 | 合肥国轩高科动力能源有限公司 | Electrode slurry dispersing device |
| CN102151512A (en) * | 2011-01-31 | 2011-08-17 | 恒正科技（苏州）有限公司 | Slurry mixing device and method for preparing battery slurry |
| CN102305812B (en) * | 2011-05-25 | 2013-03-27 | 天津力神电池股份有限公司 | Method for detecting dispersion effect of lithium ion battery slurry on line |
| CN104324626A (en) * | 2013-07-22 | 2015-02-04 | 浙江万向亿能动力电池有限公司 | Optimized dispersion method for lithium battery positive electrode slurry, and slurrying device thereof |
| CN204917984U (en) * | 2015-09-08 | 2015-12-30 | 南通市金菱电器有限公司 | Graphite superfinish and surperficial nanometer modified integration manufacturing system |
| CN105749796A (en) * | 2016-04-13 | 2016-07-13 | 张麟德 | Dispersing device and graphene material production system |
| CN206104095U (en) * | 2016-08-30 | 2017-04-19 | 无锡东恒新能源科技有限公司 | Can automatic equipment that disperses carbon nanotube electrocondution slurry |
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Denomination of invention: Automatic dispersion device for conductive paste of carbon nanotubes Effective date of registration: 20200824 Granted publication date: 20181211 Pledgee: Bank of Jiangsu Co.,Ltd. Wuxi Shanbei sub branch Pledgor: WUXI DONGHENG NEW ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2020320010125 |
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