CN106383147A - Carbon nanotube slurry dispersion effect on-line automatic-test device - Google Patents
Carbon nanotube slurry dispersion effect on-line automatic-test device Download PDFInfo
- Publication number
- CN106383147A CN106383147A CN201610764010.1A CN201610764010A CN106383147A CN 106383147 A CN106383147 A CN 106383147A CN 201610764010 A CN201610764010 A CN 201610764010A CN 106383147 A CN106383147 A CN 106383147A
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- China
- Prior art keywords
- electrode
- carbon nanotube
- slurry
- dispersion effect
- stirring
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
Abstract
The invention discloses a carbon nanotube slurry dispersion effect on-line automatic-test device. The device comprises a ceramic grinder. The ceramic grinder is filled with carbon nanotube conductive slurry and zirconia beads. A pair of electrode sets are arranged in the ceramic grinder. The electrode set comprises an electrode a and an electrode b. The electrode a is fixedly arranged at the middle of the inner wall of the ceramic grinder. The electrode b is located in the carbon nanotube conductive slurry. The top end of the electrode b is fixedly connected to a lifting support. The electrode b can be lifted or dropped. A liquid level sensor for detecting carbon nanotube conductive slurry level height is arranged on the electrode b. The electrode a and the electrode b are connected to a resistance instrument through leads. A timer is arranged in the resistance instrument. The resistance instrument is connected to a stirring motor. The device realizes accurate and effective determination of carbon nanotube slurry dispersion effects, provides time nodes of carbon nanotube slurry dispersing stirring, realizes automatic control of stirring shaft stirring time and prevents excessive stirring.
Description
Technical field
The application is related to one of carbon nano tube paste production process assistance test instrument, particularly a kind of CNT
Slurry scattering effect Real time auto measure equipment.
Background technology
CNT is as monodimension nanometer material, lightweight, and hexagonal structure connects perfection, has the power of many exceptions
, electricity and chemical property.
CNT has good mechanical property, and CNTs tensile strength reaches 50～200GPa, is 100 times of steel, close
Degree but only have steel 1/6, at least higher an order of magnitude than ordinary graphite fiber；Its elastic modelling quantity up to 1TPa, with diamond
Elastic modelling quantity quite, about the 5 of steel times.For the CNT of the solid wall with ideal structure, its tensile strength is about
800GPa.Although the structure of CNT is similar to the structure of macromolecular material, its structure is stablized than macromolecular material
Many.CNT is the material with highest specific strength that can prepare at present.If will be with Other Engineering material as matrix and carbon
Nanotube makes composite, 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 CNT is suitable with diamond, but has good pliability, can stretch.In October, 2000, beautiful
The research worker of Pennsylvania State University of state claims, and the intensity of the strength ratio same volume steel of CNT is high 100 times, after weight but only has
1/6 to the 1/7 of person.CNT thus claimed " super fiber ".CNT was once placed in by the research worker of Moscow State University
Under the hydraulic pressure of 1011 MPa（Be equivalent to the deep pressure of ten thousand metres under water）, due to huge pressure, CNT is crushed.Remove
After removing pressure, CNT has recovered shape as spring immediately, shows good toughness.This enlightenment people can utilize
CNT manufactures frivolous spring, as damping device on automobile, train, can significantly mitigate weight.
CNT has good electric conductivity, because the structure of CNT and the lamellar structure of graphite are identical, institute
To have good electric property, electrical conductivity is generally up to 10,000 times of copper.
CNT has good heat transfer property, and CNT can synthesize the heat conducting material of high anisotropy.Separately
Outward, CNT has higher thermal conductivity, as long as adulterating micro CNT in the composite, the heat of this composite
Conductance will be likely to be obtained very big improvement.
Because CNT has above-mentioned many excellent specific properties, therefore the research of CNT and nano material in recent years
More and more deep, the wide application prospect of CNT also constantly shows.
The Chinese invention patent application of Application No. 201510950204.6 disclosed in 4 days Mays in 2016, its innovation and creation
Entitled " a kind of lithium battery carbon nano tube paste and preparation method thereof ", the composition in carbon nano tube paste be carbon nanometer
Pipe, carbon black, surfactant, thickening agent, solvent.Its proportioning is, CNT：Carbon black：Surfactant：Thickening agent：Solvent=
（3~10wt%）:（0~8wt%）:（0.1~1.3wt%）:（0~1wt%）:（80~96wt%）, using this proportioning according to mix and blend work
Skill prepares dispersed uniform carbon nano tube paste.In the presence of surface activity, thickening agent, using high speed machine stirring and
The mode that ultrasonic agitation combines, makes conductive agent degree of scatter greatly improve.Carry out to being difficult to scattered carbon nanotube conducting agent
The pre-prepared of slurry reduces stirring in cell size for the next step and requires so as to reach preferable dispersion effect, up to
To preferable mixed effect.
The Chinese invention patent application of Application No. 201410114650.9 disclosed in 25 days June in 2014, its invention wound
Entitled " the carbon nanotube conducting slurry and its production and use " made, carbon nanotube conducting slurry by conductive functional filler,
Conductive functional filler pressed by dispersant, solvent：Dispersant：Solvent=2～10：0.2～5：85～97.8 mass ratio is formulated.Lead
Electricity Functional body is spherical CNT group, spherical CNT aggregate or its with carbon black, acetylene black, carbon fiber, conductive stone
The combination of one or more of ink, Graphene.Preparation method is to add described conductive functional filler and dispersant in described ratio
Enter stirring in solvent, obtain premix material, by premix material in grinding machine for grinding, formed and include multiple particle diameters for 0.1～3 micron
Spherical CNT group electrocondution slurry.This 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
Produce or the low aqueous dispersion of viscosity uses, produce in enormous quantities and substantially all disperseed using second sand mill.
When being ground with sand mill, at present, also there is no effective method, can accurately and effectively judge that CNT is starched
The dispersion effect of material, more cannot accurately provide time node of carbon nano tube paste dispersion stirring etc..Therefore starch in CNT
In material pulping process, it is badly in need of a kind of detection method to carbon nano tube paste dispersion effect, can the scattered effect of real-time detection slurry
Be given can the node time of slurry dispersion really, and accurately.
Content of the invention
The application technical problem to be solved is for above-mentioned the deficiencies in the prior art, and provides a kind of carbon nano tube paste
Dispersion effect Real time auto measure equipment, this carbon nano tube paste dispersion effect Real time auto measure equipment can be accurately and effectively
Judge the dispersion effect of carbon nano tube paste, the time node of carbon nano tube paste dispersion stirring can be given, can automatically control
The mixing time of shaft processed, it is to avoid excessive agitation.
For solving above-mentioned technical problem, the application employed technical scheme comprise that：
A kind of carbon nano tube paste dispersion effect Real time auto measure equipment, including ceramic grinder, carbon nanotube conducting slurry,
Zirconium oxide bead, electrode group, timer and resistance instrument.
Ceramic grinder be provided centrally with shaft, shaft top is connected with stirring motor, and shaft can stir
Mix and rotate under the drive of motor.
It is filled with carbon nanotube conducting slurry and zirconium oxide bead in ceramic grinder.
It is provided with a pair of electrodes group in ceramic grinder, this electrode group includes electrode a and electrode b；Electrode a is fixedly installed
In the middle part of the internal face of ceramic grinder；Electrode b is located in carbon nanotube conducting slurry, and the top of electrode b is solid with lifting support
Fixed connection, electrode b height can lift；It is provided with electrode b and can detect that the liquid level of carbon nanotube conducting slurry liquid level passes
Sensor.
Electrode a is connected with resistance instrument by wire respectively with electrode b, is built-in with timer in resistance instrument, resistance instrument with
Stirring motor is connected.
A diameter of 2-4mm of described zirconium oxide bead.
The height of described shaft can lift.
It is provided with displacement transducer on described lifting support.
Being provided with described shaft can be by the propeller blade of ceramic grinding motor spindle pulp lifter.
After the application adopts said structure, have the advantages that：
1. above-mentioned pottery sand mill have that hardness is high, wearability is good, life-span length the features such as, thus be not in conduction, magnetic conduction, gold
Belong to ion and be mixed into the phenomenons such as slurry it is adaptable to large batch of slurrying work, improve production efficiency.
2. the setting of above-mentioned zirconium oxide bead, and diameter, in 2-4mm, can make that slurry is quick, reliable separation.Sand mill starts
When, zirconium oxide bead and slurry do high speed centrifugation motion, and slurry quickly divides under centrifugal force, shaft and zirconium oxide bead effect of impact
Dissipate, simultaneous oxidation zirconium pearl can make slurry quickly reach dispersion with the reunion composition of dispersed paste the shock of slurry.In addition,
The setting of above-mentioned propeller blade, can further speed up dispersion effect.
3. the setting of above-mentioned electrode group and resistance instrument, utilizing, ceramic sand mill is non-conductive, and carbon nanotube powder is conductive
Characteristic under the premise of, make full use of the nonconducting characteristic of organic dispersion solvent in carbon nanotube conducting slurry, work as CNT
Powder is not mixed homogeneously with nonconducting organic dispersion solvent, with the time passage ground, the resistance value measured by resistance instrument
Will from large to small, when resistance value is held essentially constant in one section of setting time, even if electrode b is in carbon nanotube conducting slurry
Interior oscilaltion, resistance value remains on when keeping constant, and the dispersion effect of slurry is optimal, and also as slurry is scattered terminates most
Point.The oscilaltion of above-mentioned electrode b, therefore can test slurry from top to bottom to ceramic sand mill, and test reliability is high.
In addition, the setting of above-mentioned timer, scattered finish node can be gone out by automatic decision, an after detecting finish node sets
In time, shaft can be automatically controlled and stop stirring.
4. the setting of the liquid level sensor on above-mentioned electrode b, can be examined automatically to the liquid level of carbon nanotube conducting slurry
Survey, on the one hand can be according to setting liquid level, the adjustable height of adjust automatically shaft.On the other hand, knot can be tested according to resistance value
Really, judge stirring or sand milling efficiency, find out stirring or sand milling weak spot.
Brief description
Fig. 1 is a kind of structural representation of the application carbon nano tube paste dispersion effect Real time auto measure equipment.
Specific embodiment
With concrete better embodiment, the application is described in further detail below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of carbon nano tube paste dispersion effect Real time auto measure equipment, wherein have ceramic sand mill 1,
Shaft 11, stirring motor 12, carbon nanotube conducting slurry 2, zirconium oxide bead 3, electrode a 4, electrode b 5, lifting support 51, liquid
The technical characteristics such as level sensor 52, wire 6, timer 7, resistance instrument 8.
A kind of carbon nano tube paste dispersion effect Real time auto measure equipment, including ceramic grinder, carbon nanotube conducting
Slurry, zirconium oxide bead, electrode group, timer and resistance instrument.
Ceramic grinder be provided centrally with shaft, shaft top is connected with stirring motor, and shaft can stir
Mix and rotate under the drive of motor.
It is filled with carbon nanotube conducting slurry and zirconium oxide bead in ceramic grinder.
It is provided with a pair of electrodes group in ceramic grinder, this electrode group includes electrode a and electrode b；Electrode a is fixedly installed
In the middle part of the internal face of ceramic grinder；Electrode b is located in carbon nanotube conducting slurry, and the top of electrode b is solid with lifting support
Fixed connection, electrode b height can lift；It is provided with electrode b and can detect that the liquid level of carbon nanotube conducting slurry liquid level passes
Sensor.
Electrode a is connected with resistance instrument by wire respectively with electrode b, is built-in with timer in resistance instrument, resistance instrument with
Stirring motor is connected.
A diameter of 2-4mm of described zirconium oxide bead.
The height of described shaft can lift.
It is provided with displacement transducer on described lifting support.
Being provided with described shaft can be by the propeller blade of ceramic grinding motor spindle pulp lifter.
After the application adopts said structure, have the advantages that：
1. above-mentioned pottery sand mill have that hardness is high, wearability is good, life-span length the features such as, thus be not in conduction, magnetic conduction, gold
Belong to ion and be mixed into the phenomenons such as slurry it is adaptable to large batch of slurrying work, improve production efficiency.
2. the setting of above-mentioned zirconium oxide bead, and diameter, in 2-4mm, can make that slurry is quick, reliable separation.Sand mill starts
When, zirconium oxide bead and slurry do high speed centrifugation motion, and slurry quickly divides under centrifugal force, shaft and zirconium oxide bead effect of impact
Dissipate, simultaneous oxidation zirconium pearl can make slurry quickly reach dispersion with the reunion composition of dispersed paste the shock of slurry.In addition,
The setting of above-mentioned propeller blade, can further speed up dispersion effect.
3. the setting of above-mentioned electrode group and resistance instrument, utilizing, ceramic sand mill is non-conductive, and carbon nanotube powder is conductive
Characteristic under the premise of, make full use of the nonconducting characteristic of organic dispersion solvent in carbon nanotube conducting slurry, work as CNT
Powder is not mixed homogeneously with nonconducting organic dispersion solvent, with the time passage ground, the resistance value measured by resistance instrument
Will from large to small, when resistance value is held essentially constant in one section of setting time, even if electrode b is in carbon nanotube conducting slurry
Interior oscilaltion, resistance value remains on when keeping constant, and the dispersion effect of slurry is optimal, and also as slurry is scattered terminates most
Point.The oscilaltion of above-mentioned electrode b, therefore can test slurry from top to bottom to ceramic sand mill, and test reliability is high.
In addition, the setting of above-mentioned timer, scattered finish node can be gone out by automatic decision, an after detecting finish node sets
In time, shaft can be automatically controlled and stop stirring.
4. the setting of the liquid level sensor on above-mentioned electrode b, can be examined automatically to the liquid level of carbon nanotube conducting slurry
Survey, on the one hand can be according to setting liquid level, the adjustable height of adjust automatically shaft.On the other hand, knot can be tested according to resistance value
Really, judge stirring or sand milling efficiency, find out stirring or sand milling weak spot.
The preferred implementation of the application described in detail above, but, the application is not limited in above-mentioned embodiment
Detail, in the range of the technology design of the application, multiple equivalents can be carried out to the technical scheme of the application, this
A little equivalents belong to the protection domain of the application.
Claims (5)
1. a kind of carbon nano tube paste dispersion effect Real time auto measure equipment it is characterised in that：Receive including ceramic grinder, carbon
Mitron electrocondution slurry, zirconium oxide bead, electrode group, timer and resistance instrument；
Ceramic grinder be provided centrally with shaft, shaft top is connected with stirring motor, shaft can stirring electricity
Rotate under the drive of machine；
It is filled with carbon nanotube conducting slurry and zirconium oxide bead in ceramic grinder；
It is provided with a pair of electrodes group in ceramic grinder, this electrode group includes electrode a and electrode b；Electrode a is fixedly installed on pottery
In the middle part of the internal face of porcelain grinder；Electrode b is located in carbon nanotube conducting slurry, and the top of electrode b is fixing with lifting support even
Connect, electrode b height can lift；The liquid level sensor that carbon nanotube conducting slurry liquid level can be detected is provided with electrode b；
Electrode a is connected with resistance instrument by wire respectively with electrode b, is built-in with timer, resistance instrument and stirring in resistance instrument
Motor is connected.
2. carbon nano tube paste dispersion effect Real time auto measure equipment according to claim 1 it is characterised in that：Described
A diameter of 2-4mm of zirconium oxide bead.
3. carbon nano tube paste dispersion effect Real time auto measure equipment according to claim 1 it is characterised in that：Described
The height of shaft can lift.
4. carbon nano tube paste dispersion effect Real time auto measure equipment according to claim 1 it is characterised in that：Described
Displacement transducer is provided with lifting support.
5. carbon nano tube paste dispersion effect Real time auto measure equipment according to claim 1 it is characterised in that：Described
Being provided with shaft can be by the propeller blade of ceramic grinding motor spindle pulp lifter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610764010.1A CN106383147A (en) | 2016-08-30 | 2016-08-30 | Carbon nanotube slurry dispersion effect on-line automatic-test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610764010.1A CN106383147A (en) | 2016-08-30 | 2016-08-30 | Carbon nanotube slurry dispersion effect on-line automatic-test device |
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|---|---|---|---|---|
| CN1057109A (en) * | 1990-06-04 | 1991-12-18 | 中国科学院长春应用化学研究所 | Measure the new method of polyelectrolyte dissolution velocity |
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Application publication date: 20170208 |