CN208034947U - A kind of system that EFI prepares porous ceramics microballoon - Google Patents
A kind of system that EFI prepares porous ceramics microballoon Download PDFInfo
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- CN208034947U CN208034947U CN201820185622.XU CN201820185622U CN208034947U CN 208034947 U CN208034947 U CN 208034947U CN 201820185622 U CN201820185622 U CN 201820185622U CN 208034947 U CN208034947 U CN 208034947U
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- efi
- syringe
- porous ceramics
- groove body
- microballoon
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Abstract
The utility model is related to the systems that a kind of EFI prepares porous ceramics microballoon, including slurry feedway, electric injection device, receiving slit and material collecting device, slurry feedway includes two groups of binary channels syringe pumps, four syringes and 4 conduits, two syringes form one group, it is gripped through syringe pump, electric injection device includes D.C. regulated power supply, four EFI syringe needles, and receiving slit includes groove body and groove body holder, and material collecting device is the rewinding tank with strainer.Compared with prior art, the utility model can stablize, efficiently, the porous microsphere and ball powders of mass production metal, ceramics, glass and nonmetal oxide material.
Description
Technical field
The utility model is related to ceramic field shaping techniques, are more particularly, to what a kind of EFI prepared porous ceramics microballoon
System.
Background technology
Porous ceramics microballoon refers to size between several nanometers to several millimeters, surface-closed or has trepanning, and inside has more
The spherical ceramic materials of pore structure.It is low with density, intensity is high, thermal conductivity is low, conductivity is low, large specific surface area, corrosion resistance
The excellent specific properties such as good, are widely used in insulating materials, heat-insulated filled media, ablation resistant material, absorbing sound and lowering noise material, medicine in recent years
Object carrier, catalyst carrier, spraying powder etc..
The preparation method of porous ceramics microballoon mainly include template, emulsion method, spray drying process, sol-gal process, with
And the EFI method (Chinese patent CN104529504A) etc. of recent report.The method of wherein EFI producing porous ceramic microballoon is to utilize
Non-solvent causes the basic principle of inversion of phases, by electrostatic force by ceramic powders and organic binder, the mixed slurry of solvent
It is dispersed into microlayer model, after entering non-solvent Phase separation occurs for microlayer model, and is gradually solidified into presoma ball.Presoma ball warp mistake
It is dry, become the ceramic microsphere with porous structure after sintering.Compared with other methods, the technique of EFI producing porous ceramic microballoon
Relatively simple, microballoon obtained has many advantages, such as that high sphericity, good fluidity and mechanical property are good, before having good application
Scape.
Currently, the supply of slurry relies primarily on pneumatically in electric injection system, flow be difficult to accurately control and the transport of gas cylinder and
All there is certain danger in storage.In industrial-scale mass preparation process, the slurry supply of electric injection system, field distribution etc.
Factor has a significant impact the repeatability and uniformity of microballoon production, and the control to correlative factor is also that electric injection system is set
The most important thing of meter.
Utility model content
The purpose of this utility model is exactly to provide a kind of EFI preparation to overcome the problems of the above-mentioned prior art
The system of porous ceramics microballoon.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of system that EFI prepares porous ceramics microballoon, including slurry feedway, electric injection device, receiving slit and rewinding
Device,
The slurry feedway includes two groups of binary channels syringe pumps, four syringes and 4 conduits, two syringes
One group is formed, is gripped through syringe pump, internal slurry, the outlet connection of the conduit and syringe,
The electric injection device includes D.C. regulated power supply, four EFI syringe needles, and the D.C. regulated power supply can provide-
The generating positive and negative voltage of 40~40kV, wherein positive voltage connect four EFI syringe needles by conducting wire, and negative voltage connects receiving slit by conducting wire, institute
The EFI syringe needle stated is connect through conduit with syringe, forms stable electricity between EFI syringe needle and receiving slit using electric injection device
, for disperseing and drawing slurry,
The receiving slit includes groove body and groove body holder,
The material collecting device is the rewinding tank with strainer, after coagulating bath and presoma microballoon flow into rewinding tank, solid
Microballoon is deposited on strainer, and coagulating bath is flowed down from mesh and flowed out from outlet, completes the separation of presoma and coagulating bath.
The syringe pump includes stepper motor and its driver, lead screw and holder with reciprocating movement.
The control Pulse Width Control that the stepper motor is sent out through SCM system drives lead screw movement, the lead screw to pass through
The piston of nut and syringe connects, and sends out control pulse by SCM system, stepper motor is made to rotate, and stepper motor drives
Rotation motion is in line movement by lead screw, pushes the piston of syringe to carry out injection ceramic slurry, the ceramics in syringe
Slurry is continuously output to nozzle.By the rotary speed for setting screw rod, so that it may adjust its propulsion to ceramic slurry in syringe
Speed sprays the size and shape of bead so as to adjust nozzle.
The spacing of four square arrangements of EFI syringe needle, two syringe needle of homonymy is 60 centimetres, it is ensured that during EFI
Spray cone between each syringe needle will not interfere with each other.
The distance between described EFI syringe needle bottom and groove body are 10-15 centimetres.
The groove body lower surface has the inclination angle of 15-20 degree from edge to center, convenient for coagulating bath and presoma microballoon
Outflow, groove body bottom centre are equipped with outlet, which is connected with ball valve.
The foot of the groove body holder is additionally provided with rubber-covered pad.
The aperture of the strainer is 1800 mesh.
Compared with prior art, the utility model can stablize, efficiently, mass production metal, ceramics, glass and Fei Jin
Belong to the porous microsphere and ball powders of oxide material.
Description of the drawings
Fig. 1 is the structural schematic diagram of slurry feedway；
Fig. 2 is the fundamental diagram of electric injection device；
Fig. 3 is the structural schematic diagram of receiving slit and collection device.
In figure, 1- EFI syringe needles；2- D.C. regulated power supplies；3- syringe pumps；4- syringes；5- coagulating baths；6- receiving slits；7-
Groove body holder；8- felt pads；9- ball valves；10- rewinding tanks；11- strainers；12- conduits.
Specific implementation mode
The utility model is described in detail with reference to specific embodiment.Following embodiment will be helpful to this field
Technical staff further understands the utility model, but does not limit the utility model in any form.It should be pointed out that ability
For the those of ordinary skill in domain, without departing from the concept of the premise utility, various modifications and improvements can be made.
These belong to the scope of protection of the utility model.
Embodiment 1
A kind of system that EFI prepares porous ceramics microballoon, this is that a kind of high-throughput manufacture porous microsphere equipment --- phase turns
Change auxiliary electrostatic micro-spray system, including slurry feedway, electric injection device, receiving slit and material collecting device.Slurry feedway
Structure is as shown in Figure 1, include two groups of binary channels syringe pumps, 3, four syringes 4 and four conduits 12, two syringes 4 form one
Group is gripped through syringe pump 3, internal slurry, and conduit is for connecting syringe 4 and EFI syringe needle 1.Syringe pump includes
Stepper motor and its driver, lead screw and holder with reciprocating movement, the control arteries and veins that stepper motor is sent out through SCM system
Punching control drives lead screw movement, the lead screw to be connected by the piston of nut and syringe, control arteries and veins is sent out by SCM system
Punching, makes stepper motor rotate, and stepper motor drives lead screw that rotation motion is in line movement, and the piston of syringe is pushed to carry out
Ceramic slurry is injected, the ceramic slurry in syringe is continuously output to nozzle.By the rotary speed for setting screw rod, so that it may adjust
Its whole fltting speed to ceramic slurry in syringe sprays the size and shape of bead so as to adjust nozzle.
Electric injection device includes 2, four EFI syringe needles 1 of D.C. regulated power supply, and fundamental diagram is as shown in Fig. 2, direct current is steady
Voltage source 2 can provide the generating positive and negative voltage of -40~40kV, and wherein positive voltage connects four EFI syringe needles 1 by conducting wire, and negative voltage is by leading
Line connects receiving slit 6, stable electric field is formed between EFI syringe needle 1 and receiving slit 6 using electric injection device, for disperseing and leading
Draw slurry.The spacing of four 1 square arrangements of EFI syringe needle, two syringe needle of homonymy is 60 centimetres, it is ensured that during EFI
Spray cone between each syringe needle will not interfere with each other.The distance between the bottom of EFI syringe needle 1 and receiving slit 6 are 10-15 centimetres.
The structure of receiving slit and collection device is as shown in figure 3, receiving slit 6 includes groove body and groove body holder 7, groove body lower surface
There is the inclination angle of 15-20 degree from edge to center, the outflow of coagulating bath and presoma microballoon, groove body bottom centre is convenient for be equipped with out
Mouthful, which is connected with ball valve 9.The foot of groove body holder 7 is additionally provided with the felt pad 8 of rubber material.Material collecting device is with filter
The aperture of the rewinding tank 12 of net 11, strainer is 1800 mesh, and after coagulating bath and presoma microballoon flow into rewinding tank, microspheres with solid is retained
On strainer, coagulating bath is flowed down from mesh and is flowed out from outlet, completes the separation of presoma and coagulating bath.
Embodiment 2
In the present embodiment, ceramic slurry is loaded using the syringe of 4 100ml volumes, the supply of ceramic slurry is by injecting
Pump provides.
The application method of the EFI producing porous ceramic microballoon system of the utility model is：Before EFI, it will be pre-mixed uniformly
Slurry insert in syringe, in the present embodiment, slurry therewith be rare earth-stabilized zirconia ceramic powders, polyether sulfone and N- first
The mixed slurry of base pyrrolidones；Syringe outlet is connected with EFI syringe needle using silicone tube, and secures the needle to limit
Kong Zhong；D.C. regulated power supply anode connects EFI syringe needle, and cathode connects receiving slit；The outlet for closing receiving slit, in receiving slit
Non-solvent coagulating bath is injected, being higher by reception trench bottom 2cm with liquid level is advisable, and in the present embodiment, non-solvent used is tap water.
When EFI, D.C. regulated power supply and syringe pump are connected, in the present embodiment, setting positive pole voltage is+10kV,
Cathode voltage is -10kV, and injection flow rate pump is 4ml/min；Slurry at Needle outlet is dispersed into microlayer model by electrostatic repulsion,
Under the action of gravity and electric field force, microlayer model enters tap water coagulating bath, and inversion of phases effect occurs and is cured as presoma microballoon；
After the completion of slurry conveying, D.C. regulated power supply and syringe pump are closed.
After EFI, presoma microballoon impregnates for 24 hours in coagulating bath, and inversion of phases is made fully to carry out；Material collecting device is placed in ball
Below valve, ball valve is opened, so that coagulating bath and precursor ceramic microballoon is flowed into rewinding tank together, and complete to detach by sieve.
The presoma microballoon on strainer is deposited in after drying, sintering, obtains the ceramic microsphere with porous structure.
Embodiment 3
In the present embodiment, silicate glass slurry, silicate glass slurry are loaded using the syringe of 4 250ml volumes
Supply provided by syringe pump.
The application method of the EFI producing porous ceramic microballoon system of the utility model is：Before EFI, it will be pre-mixed uniformly
Slurry insert in syringe, in the present embodiment, slurry therewith be silicate glass powder, acetate fiber and N- methylpyrroles
The mixed slurry of alkanone；Syringe outlet is connected with EFI syringe needle using silicone tube, and is secured the needle in limit hole；Directly
It flows positive pole of stabilized voltage supply and connects EFI syringe needle, cathode connects receiving slit；The outlet for closing receiving slit, injects non-molten in receiving slit
Agent coagulating bath, being higher by reception trench bottom 4cm with liquid level is advisable, and in the present embodiment, non-solvent used is tap water.
When EFI, D.C. regulated power supply and syringe pump are connected, in the present embodiment, setting positive pole voltage is+20kV,
Cathode voltage is -20kV, and injection flow rate pump is 6ml/min；Slurry at Needle outlet is dispersed into microlayer model by electrostatic repulsion,
Under the action of gravity and electric field force, microlayer model enters tap water coagulating bath, and inversion of phases effect occurs and is cured as presoma microballoon；
After the completion of slurry conveying, D.C. regulated power supply and syringe pump are closed.
After EFI, presoma microballoon impregnates 48h in coagulating bath, and inversion of phases is made fully to carry out；Material collecting device is placed in ball
Below valve, ball valve is opened, so that coagulating bath and presoma microballoon is flowed into rewinding tank together, and complete to detach by sieve.
The presoma microballoon on strainer is deposited in after drying, sintering, obtains the silicate glass with porous structure
Microballoon.
Embodiment 4
In the present embodiment, silicon carbide powder slurry, silicon carbide powder slurry are loaded using the syringe of 4 200ml volumes
Supply provided by syringe pump.
The application method of the EFI producing porous ceramic microballoon system of the utility model is：Before EFI, it will be pre-mixed uniformly
Slurry insert in syringe, in the present embodiment, slurry therewith be silicon carbide powder, acetate fiber and N-Methyl pyrrolidone
Mixed slurry；Syringe outlet is connected with EFI syringe needle using silicone tube, and is secured the needle in limit hole；Direct current is steady
Voltage source anode connects EFI syringe needle, and cathode connects receiving slit；It is solidifying to inject non-solvent in receiving slit for the outlet for closing receiving slit
Gu bath, being higher by reception trench bottom 4cm with liquid level is advisable, and in the present embodiment, non-solvent used is tap water.
When EFI, D.C. regulated power supply and syringe pump are connected, in the present embodiment, setting positive pole voltage is+40kV,
Cathode voltage is -40kV, and injection flow rate pump is 8ml/min；Slurry at Needle outlet is dispersed into microlayer model by electrostatic repulsion,
Under the action of gravity and electric field force, microlayer model enters tap water coagulating bath, and inversion of phases effect occurs and is cured as presoma microballoon；
After the completion of slurry conveying, D.C. regulated power supply and syringe pump are closed.
After EFI, presoma microballoon impregnates 48h in coagulating bath, and inversion of phases is made fully to carry out；Material collecting device is placed in ball
Below valve, ball valve is opened, so that coagulating bath and presoma microballoon is flowed into rewinding tank together, and complete to detach by sieve.
The presoma microballoon on strainer is deposited in after drying, vacuum drying oven sintering, obtains the carbonization with porous structure
Silicon microballoon.
Embodiment 5
In the present embodiment, metallic copper powdery pulp, metallic copper powdery pulp are loaded using the syringe of 4 100ml volumes
Supply provided by syringe pump.
The application method of the EFI producing porous ceramic microballoon system of the utility model is：Before EFI, it will be pre-mixed uniformly
Slurry insert in syringe, in the present embodiment, slurry therewith be metallic copper powder, polysulfones and N-Methyl pyrrolidone it is mixed
Close slurry；Syringe outlet is connected with EFI syringe needle using silicone tube, and is secured the needle in limit hole；DC voltage-stabilizing electricity
Source anode connects EFI syringe needle, and cathode connects receiving slit；Non-solvent solidification is injected in the outlet for closing receiving slit in receiving slit
Bath, being higher by reception trench bottom 4cm with liquid level is advisable, and in the present embodiment, non-solvent used is tap water.
When EFI, D.C. regulated power supply and syringe pump are connected, in the present embodiment, setting positive pole voltage is+40kV,
Cathode voltage is -40kV, and injection flow rate pump is 4ml/min；Slurry at Needle outlet is dispersed into microlayer model by electrostatic repulsion,
Under the action of gravity and electric field force, microlayer model enters tap water coagulating bath, and inversion of phases effect occurs and is cured as presoma microballoon；
After the completion of slurry conveying, D.C. regulated power supply and syringe pump are closed.
After EFI, presoma microballoon impregnates 48h in coagulating bath, and inversion of phases is made fully to carry out；Material collecting device is placed in ball
Below valve, ball valve is opened, so that coagulating bath and presoma microballoon is flowed into rewinding tank together, and complete to detach by sieve.
The presoma microballoon on strainer is deposited in after the gas-protecting sintering of drying, 5mol% hydrogen and argon gas, is obtained
Obtain the metallic copper microballoon with porous structure.
Specific embodiment of the utility model is described above.It is to be appreciated that the utility model not office
It is limited to above-mentioned particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims,
This has no effect on the substantive content of the utility model.
Claims (8)
1. the system that a kind of EFI prepares porous ceramics microballoon, which is characterized in that the system includes slurry feedway, EFI dress
It sets, receiving slit and material collecting device,
The slurry feedway includes two groups of binary channels syringe pumps, four syringes and 4 conduits, and two syringes are formed
It one group, is gripped through syringe pump, internal slurry, the outlet connection of the conduit and syringe,
The electric injection device includes D.C. regulated power supply, four EFI syringe needles, and the D.C. regulated power supply can provide -40~
The generating positive and negative voltage of 40kV, wherein positive voltage connect four EFI syringe needles by conducting wire, and negative voltage connects receiving slit by conducting wire, described
EFI syringe needle is connect through conduit with syringe,
The receiving slit includes groove body and groove body holder,
The material collecting device is the rewinding tank with strainer.
2. the system that a kind of EFI according to claim 1 prepares porous ceramics microballoon, which is characterized in that the injection
Pump includes stepper motor and its driver, lead screw and holder with reciprocating movement.
3. the system that a kind of EFI according to claim 2 prepares porous ceramics microballoon, which is characterized in that the stepping
The control Pulse Width Control that motor is sent out through SCM system drives lead screw movement, the piston which passes through nut and syringe
Connection.
4. the system that a kind of EFI according to claim 1 prepares porous ceramics microballoon, which is characterized in that four EFI needles
The spacing of square arrangement, two syringe needle of homonymy is 60 centimetres.
5. the system that a kind of EFI according to claim 1 or 4 prepares porous ceramics microballoon, which is characterized in that described
The distance between EFI syringe needle bottom and groove body are 10-15 centimetres.
6. the system that a kind of EFI according to claim 1 prepares porous ceramics microballoon, which is characterized in that the groove body
Lower surface has the inclination angle of 15-20 degree, groove body bottom centre to be equipped with outlet from edge to center, which is connected with ball valve.
7. the system that a kind of EFI according to claim 1 prepares porous ceramics microballoon, which is characterized in that the groove body
The foot of holder is additionally provided with rubber-covered pad.
8. the system that a kind of EFI according to claim 1 prepares porous ceramics microballoon, which is characterized in that the strainer
Aperture be 1800 mesh.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820185622.XU CN208034947U (en) | 2018-02-02 | 2018-02-02 | A kind of system that EFI prepares porous ceramics microballoon |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820185622.XU CN208034947U (en) | 2018-02-02 | 2018-02-02 | A kind of system that EFI prepares porous ceramics microballoon |
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| CN208034947U true CN208034947U (en) | 2018-11-02 |
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| CN201820185622.XU Expired - Fee Related CN208034947U (en) | 2018-02-02 | 2018-02-02 | A kind of system that EFI prepares porous ceramics microballoon |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109161837A (en) * | 2018-11-12 | 2019-01-08 | 舟山腾宇航天新材料有限公司 | A kind of preparation method of high life YSZ thermal barrier coating |
| CN116041075A (en) * | 2023-04-03 | 2023-05-02 | 华南理工大学 | Hollow ceramic microsphere and preparation method and application thereof |
-
2018
- 2018-02-02 CN CN201820185622.XU patent/CN208034947U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109161837A (en) * | 2018-11-12 | 2019-01-08 | 舟山腾宇航天新材料有限公司 | A kind of preparation method of high life YSZ thermal barrier coating |
| CN116041075A (en) * | 2023-04-03 | 2023-05-02 | 华南理工大学 | Hollow ceramic microsphere and preparation method and application thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20181102 Termination date: 20190202 |