CN114161641A - Microwave absorbing material preparation device and method - Google Patents
Microwave absorbing material preparation device and method Download PDFInfo
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- CN114161641A CN114161641A CN202111486504.5A CN202111486504A CN114161641A CN 114161641 A CN114161641 A CN 114161641A CN 202111486504 A CN202111486504 A CN 202111486504A CN 114161641 A CN114161641 A CN 114161641A
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- microwave absorbing
- raw materials
- absorbing material
- preparing
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- 239000011358 absorbing material Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims description 13
- 239000002994 raw material Substances 0.000 claims abstract description 48
- 238000005096 rolling process Methods 0.000 claims abstract description 37
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 238000012360 testing method Methods 0.000 claims abstract description 15
- 238000003801 milling Methods 0.000 claims abstract description 10
- 238000010521 absorption reaction Methods 0.000 claims abstract description 7
- 239000004615 ingredient Substances 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 claims abstract description 5
- 238000011084 recovery Methods 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 9
- 238000004064 recycling Methods 0.000 claims description 9
- 238000003490 calendering Methods 0.000 claims description 8
- 239000006096 absorbing agent Substances 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 239000012752 auxiliary agent Substances 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 229920002545 silicone oil Polymers 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 239000007822 coupling agent Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 3
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000006230 acetylene black Substances 0.000 claims description 3
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 claims description 3
- 229910002113 barium titanate Inorganic materials 0.000 claims description 3
- 239000002041 carbon nanotube Substances 0.000 claims description 3
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000000084 colloidal system Substances 0.000 claims description 3
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 3
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000003112 inhibitor Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/24—Calendering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention relates to the technical field of microwave absorbing materials, in particular to a device and a method for preparing a microwave absorbing material, which comprises the steps of preparing raw materials; putting the raw materials into an open mill for open milling; putting the raw materials after the open milling into a vacuum defoaming machine for defoaming; pressing the defoamed raw materials into blanks by using a rolling mechanism; baking and curing the blank; cutting the cured ingredients into blocks and then testing the reflection loss; the method has the advantages that the blanks qualified in the test are subjected to wave absorption application, raw materials adopted in the production of microwave absorbing materials capable of absorbing different wave bands are the same, the production steps are the same, the microwave absorbing materials capable of absorbing different wave bands can be produced only by changing the proportion of the raw materials input into the rolling mechanism, and the problem that the production process of matching a plurality of microwave absorbing materials capable of absorbing different wave bands is complex is solved.
Description
Technical Field
The invention relates to the technical field of microwave absorbing materials, in particular to a device and a method for preparing a microwave absorbing material.
Background
With the continuous development of the IT industry, electromagnetic pollution and electromagnetic interference become more serious, and research and development of materials with a microwave absorption function are widely concerned.
With the increasing frequency band of electronic components, the problem of radio frequency interference becomes more serious. The existing microwave absorbing materials can only absorb the same wave band, so that a plurality of microwave absorbing materials which can absorb different wave bands are required to be matched together to achieve the effect of absorbing various wave bands;
however, the preparation raw materials and methods of a plurality of microwave absorbing materials are different, so that a plurality of raw materials need to be prepared in the preparation process, different preparation methods are used for preparing different raw materials, and the production process is complex.
Disclosure of Invention
The invention aims to provide a microwave absorbing material preparation device and a microwave absorbing material preparation method, and aims to solve the problem that the production process of matching a plurality of microwave absorbing materials capable of absorbing different wave bands is complex.
In order to achieve the above object, in a first aspect, the present invention provides a method for preparing a microwave absorbing material, including:
preparing raw materials;
putting the raw materials into an open mill for open milling;
putting the raw materials after the open milling into a vacuum defoaming machine for defoaming;
pressing the defoamed raw materials into blanks by using a rolling mechanism;
baking and curing the blank;
cutting the cured ingredients into blocks and then testing the reflection loss;
and (5) performing wave absorption application on the blank qualified in the test.
Wherein, the raw materials comprise 40-80% of wave absorbing agent, 10-20% of auxiliary filler, 10-20% of polymer matrix and 1-5% of auxiliary agent according to percentage.
The wave absorbing agent comprises carbonyl iron powder, barium titanate, fiber silicon carbide, acetylene black and carbon nano tubes.
Wherein the auxiliary filler comprises alumina powder, aluminum nitride, silicon micropowder and talcum powder.
Wherein the polymer matrix comprises silicon rubber, vinyl silicone oil, dimethyl silicone oil, nitrile rubber and acrylate colloid.
The auxiliary agent comprises a coupling agent, a curing agent, a catalyst and an inhibitor.
In a second aspect, the invention provides a microwave absorbing material preparation device, which comprises a calendaring mechanism and a plurality of recovery mechanisms, wherein the calendaring mechanism is used for calendaring the microwave absorbing material;
the rolling mechanism comprises an installation frame and a rolling assembly, the rolling assembly is arranged on one side of the installation frame, and the installation frame is provided with two sliding grooves;
retrieve the mechanism including retrieving box, suction fan, collecting pipe, two sliders, scraper blade, spout and two propelling movement subassemblies, retrieve the box with the mounting bracket is dismantled and is connected to be located near one side of calendering subassembly, the suction fan with retrieve box fixed connection, and run through retrieve the box, the collecting pipe with retrieve box fixed connection, and be located near one side of calendering subassembly, two the slider respectively with mounting bracket sliding connection all is located in the spout, scraper blade and two the slider is dismantled and is connected, and is located two between the slider, two one side of propelling movement subassembly respectively with two slider fixed connection, two the opposite side of propelling movement subassembly respectively with mounting bracket fixed connection, all is located the slider with between the mounting bracket.
The push assembly comprises a telescopic cylinder and a reset spring, one side of the telescopic cylinder is fixedly connected with the sliding block, the other side of the telescopic cylinder is fixedly connected with the mounting frame and located between the sliding block and the mounting frame, and the reset spring is fixedly connected with the telescopic cylinder and located in the telescopic cylinder.
The invention relates to a preparation method of a microwave absorbing material, which comprises the steps of preparing raw materials; putting the raw materials into an open mill for open milling; putting the raw materials after the open milling into a vacuum defoaming machine for defoaming; pressing the defoamed raw materials into blanks by using a rolling mechanism; baking and curing the blank; cutting the cured ingredients into blocks and then testing the reflection loss; the method has the advantages that the blanks qualified in the test are subjected to wave absorption application, raw materials adopted in the production of microwave absorbing materials capable of absorbing different wave bands are the same, the production steps are the same, the microwave absorbing materials capable of absorbing different wave bands can be produced only by changing the proportion of the raw materials input into the rolling mechanism, and the problem that the production process of matching a plurality of microwave absorbing materials capable of absorbing different wave bands is complex is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method for preparing a microwave absorbing material provided by the invention.
Fig. 2 is a reflection loss test chart of example 1.
Fig. 3 is a reflection loss test chart of example 2.
Fig. 4 is a reflection loss test chart of example 3.
Fig. 5 is a reflection loss test chart of example 4.
Fig. 6 is a reflection loss test chart of example 5.
FIG. 7 is a schematic structural diagram of an apparatus for preparing a microwave absorbing material provided by the present invention.
FIG. 8 is a side view of an apparatus for preparing microwave absorbing material provided by the present invention.
Fig. 9 is a cross-sectional view taken along plane a-a of fig. 8.
Fig. 10 is an enlarged view of detail B of fig. 9.
1-calendering mechanism, 2-recovery mechanism, 3-mounting rack, 4-calendering component, 5-recovery box, 6-suction fan, 7-collecting pipe, 8-scraper, 9-slide block, 10-chute, 11-pushing component, 12-telescopic cylinder, 13-reset spring, 14-box cover, 15-box body, 16-air outlet and 17-filter screen.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1, in a first aspect, the present invention provides a method for preparing a microwave absorbing material, including:
s101, preparing raw materials;
the material comprises, by percentage, 40-80% of a wave absorbing agent, 10-20% of an auxiliary filler, 10-20% of a polymer matrix and 1-5% of an auxiliary agent, wherein the wave absorbing agent comprises carbonyl iron powder, barium titanate, fiber silicon carbide, acetylene black and carbon nano tubes, the auxiliary filler comprises alumina powder, aluminum nitride, silicon micropowder and talcum powder, the polymer matrix comprises silicon rubber, vinyl silicone oil, dimethyl silicone oil, nitrile rubber and acrylate colloid, and the auxiliary agent comprises a coupling agent, a curing agent, a catalyst and an inhibitor.
S102, putting the raw materials into an open mill for open milling;
the microwave absorbing material capable of absorbing different wave bands can be prepared by controlling the adding proportion of the carbonyl iron powder of the wave absorbing agent and the alumina powder of the auxiliary filler.
S103, feeding the raw materials subjected to open milling into a vacuum defoaming machine for defoaming;
the defoaming time is 10 min.
S104, pressing the defoamed raw materials into blanks by using a rolling mechanism 1;
the recovery mechanism 2 can collect the raw materials remained on the rolling surface of the rolling mechanism 1, so that the waste of the raw materials is avoided.
S105, baking and curing the blank;
the baking temperature was 150 ℃.
S106, cutting the solidified ingredients into blocks and then testing reflection loss;
the cut pieces were 300mm by 300mm in size.
And S107, performing wave absorption application on the qualified blank.
The produced microwave absorbing materials capable of absorbing different wave bands are matched together, so that the absorption of different wave bands can be realized.
The following provides the raw materials and the proportions used in the five examples in%:
the coupling agents used in examples 1 to 5 are silane coupling agents, and the reflection loss test charts of examples 1 to 5 refer to fig. 2 to 6, and the reflectances in fig. 2 to 6 are the same.
Referring to fig. 7 to 10, in a second aspect, the present invention provides a microwave absorbing material preparation method, including a rolling mechanism 1 and a plurality of recycling mechanisms 2;
the rolling mechanism 1 comprises an installation frame 3 and a rolling assembly 4, the rolling assembly 4 is arranged on one side of the installation frame 3, and the installation frame 3 is provided with two sliding grooves 10;
the recovery mechanism 2 comprises a recovery box 5, a suction fan 6, a collecting pipe 7, two sliding blocks 9, a scraper 8, a chute 10 and two pushing assemblies 11, wherein the recovery box 5 is detachably connected with the mounting frame 3 and is positioned at one side close to the rolling assembly 4, the suction fan 6 is fixedly connected with the recovery box 5 and penetrates through the recovery box 5, the collecting pipe 7 is fixedly connected with the recovery box 5 and is positioned at one side close to the rolling assembly 4, the two sliding blocks 9 are respectively in sliding connection with the mounting frame 3 and are positioned in the chute 10, the scraper 8 is detachably connected with the two sliding blocks 9 and is positioned between the two sliding blocks 9, one side of each of the two pushing assemblies 11 is respectively fixedly connected with the two sliding blocks 9, and the other side of each of the two pushing assemblies 11 is respectively fixedly connected with the mounting frame 3, are located between the slide 9 and the mounting frame 3.
In this embodiment, the mounting frame 3 of the rolling mechanism 1 provides mounting conditions for the rolling component 4 and the recovery mechanism 2, the rolling component 4 is used for pressing the defoamed raw materials into ingredients, the recovery mechanism 2 recovers the raw materials remaining on the rolled surface of the rolling component 4 and then puts the recovered raw materials into secondary utilization, so as to avoid waste of the raw materials, specifically, the pushing component 11 pushes the sliding block 9 to slide on the sliding groove 10 of the mounting frame 3 in the direction close to the rolling component 4 until the sliding block 9 drives the scraper 8 to contact with the rolling component 4, when the rolling component 4 rotates to press the raw materials, the scraper 8 scrapes off the raw materials remaining on the surface of the rolling component 4, the suction fan 6 operates, so that the collecting pipe 7 drains the raw materials scraped off by the scraper 8 into the recovery box 5 for storage, and the raw material on the surface of the rolling component 4 is air-dried and cured after contacting with air when rotating along with the rolling component 4, and when the rolling component 4 drives the cured raw material to rotate for a circle and then returns to the conveying end of the raw material, the cured raw material cannot be sufficiently contacted and adhered with the uncured raw material, and if the raw material is pressed, the produced blank can be broken.
Further, propelling movement subassembly 11 includes telescopic tube 12 and reset spring 13, one side of telescopic tube 12 with slider 9 fixed connection, the opposite side of telescopic tube 12 with mounting bracket 3 fixed connection, and be located slider 9 with between the mounting bracket 3, reset spring 13 with telescopic tube 12 fixed connection, and be located in telescopic tube 12.
In this embodiment, the resilience force of the return spring 13 of the pushing assembly 11 pushes the slider 9 to slide towards the rolling assembly 4, and the telescopic cylinder 12 surrounds the return spring 13 and correspondingly extends and retracts along with the extension and retraction condition of the return spring 13, so as to protect the return spring 13 and prevent the return spring 13 from being clamped by raw materials.
Further, the recycling box 5 comprises a box cover 14 and a box body 15, the box cover 14 is detachably connected with the mounting frame 3 and is located at one side close to the rolling component 4, the collecting pipe 7 is fixedly connected with the box cover 14 and is located at one side close to the rolling component 4, the suction fan 6 is fixedly connected with the box cover 14 and is located on the inner side wall of the box cover 14, and the box body 15 is detachably connected with the box cover 14 and is located at one side far away from the collecting pipe 7; retrieve box 5 and still include filter screen 17, box body 15 has air outlet 16, filter screen 17 with box body 15 fixed connection, and be located filter screen 17 department.
In this embodiment, the box cover 14 of the recycling box 5 provides a mounting condition for the collecting pipe 7 and the suction fan 6, the suction fan 6 drives the collecting pipe 7 to guide the raw material into the box body 15 for storage, and for the gas to be discharged from the air outlet 16, the filter screen 17 can prevent the raw material from being discharged from the air outlet 16 along with the gas.
Although the preferred embodiments of the apparatus and method for preparing microwave absorbing material of the present invention have been disclosed, it is understood that the scope of the claims of the present invention should not be limited thereby, and persons skilled in the art can understand that all or part of the procedures for implementing the embodiments described above and equivalent variations made according to the claims of the present invention also belong to the scope of the present invention.
Claims (8)
1. A preparation method of a microwave absorbing material is characterized by comprising the following steps:
preparing raw materials;
putting the raw materials into an open mill for open milling;
putting the raw materials after the open milling into a vacuum defoaming machine for defoaming;
pressing the defoamed raw materials into blanks by using a rolling mechanism (1);
baking and curing the blank;
cutting the cured ingredients into blocks and then testing the reflection loss;
and (5) performing wave absorption application on the blank qualified in the test.
2. The method for preparing microwave absorbing material according to claim 1,
the raw materials comprise, by percentage, 40-80% of a wave absorbing agent, 10-20% of an auxiliary filler, 10-20% of a polymer matrix and 1-5% of an auxiliary agent.
3. The method for preparing microwave absorbing material according to claim 2,
the wave absorbing agent comprises carbonyl iron powder, barium titanate, fiber silicon carbide, acetylene black and carbon nano tubes.
4. The method for preparing microwave absorbing material according to claim 2,
the auxiliary filler comprises alumina powder, aluminum nitride, silicon micropowder and talcum powder.
5. The method for preparing microwave absorbing material according to claim 2,
the polymer matrix comprises silicon rubber, vinyl silicone oil, dimethyl silicone oil, nitrile rubber and acrylate colloid.
6. The method for preparing microwave absorbing material according to claim 2,
the auxiliary agent comprises a coupling agent, a curing agent, a catalyst and an inhibitor.
7. A microwave absorbing material preparation device is applied to the microwave absorbing material preparation method of any one of claims 1 to 6, and is characterized by comprising a calendaring mechanism (1) and a plurality of recovery mechanisms (2);
the rolling mechanism (1) comprises an installation frame (3) and a rolling assembly (4), the rolling assembly (4) is arranged on one side of the installation frame (3), and the installation frame (3) is provided with two sliding grooves (10);
the recycling mechanism (2) comprises a recycling box (5), a suction fan (6), a collecting pipe (7), two sliding blocks (9), a scraping plate (8), a sliding groove (10) and two pushing assemblies (11), the recycling box (5) is detachably connected with the mounting frame (3) and is positioned at one side close to the rolling assembly (4), the suction fan (6) is fixedly connected with the recycling box (5) and penetrates through the recycling box (5), the collecting pipe (7) is fixedly connected with the recycling box (5) and is positioned at one side close to the rolling assembly (4), the two sliding blocks (9) are respectively in sliding connection with the mounting frame (3) and are positioned in the sliding groove (10), the scraping plate (8) is detachably connected with the two sliding blocks (9) and is positioned between the two sliding blocks (9), one side of the two pushing assemblies (11) is respectively fixedly connected with the two sliding blocks (9), the other sides of the two pushing assemblies (11) are fixedly connected with the mounting rack (3) respectively and are located between the sliding block (9) and the mounting rack (3).
8. The apparatus for preparing microwave absorbing material according to claim 7,
propelling movement subassembly (11) are including a telescopic tube (12) and reset spring (13), one side of a telescopic tube (12) with slider (9) fixed connection, the opposite side of a telescopic tube (12) with mounting bracket (3) fixed connection, and be located slider (9) with between mounting bracket (3), reset spring (13) with a telescopic tube (12) fixed connection, and be located in a telescopic tube (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111486504.5A CN114161641A (en) | 2021-12-07 | 2021-12-07 | Microwave absorbing material preparation device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111486504.5A CN114161641A (en) | 2021-12-07 | 2021-12-07 | Microwave absorbing material preparation device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114161641A true CN114161641A (en) | 2022-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202111486504.5A Pending CN114161641A (en) | 2021-12-07 | 2021-12-07 | Microwave absorbing material preparation device and method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107365135A (en) * | 2017-07-21 | 2017-11-21 | 无锡博轩电磁材料科技有限公司 | W types barium ferrite/carbonyl iron composite wave-absorbing silica gel piece and preparation method thereof |
| CN210762858U (en) * | 2019-08-16 | 2020-06-16 | 吉林市安欣干混砂浆有限公司 | Dry-mixed mortar excess material recovery device |
| CN211591030U (en) * | 2019-12-19 | 2020-09-29 | 无锡瑞之顺机械设备制造有限公司 | Plastic calendering device convenient to clear up calendering wheel |
-
2021
- 2021-12-07 CN CN202111486504.5A patent/CN114161641A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107365135A (en) * | 2017-07-21 | 2017-11-21 | 无锡博轩电磁材料科技有限公司 | W types barium ferrite/carbonyl iron composite wave-absorbing silica gel piece and preparation method thereof |
| CN210762858U (en) * | 2019-08-16 | 2020-06-16 | 吉林市安欣干混砂浆有限公司 | Dry-mixed mortar excess material recovery device |
| CN211591030U (en) * | 2019-12-19 | 2020-09-29 | 无锡瑞之顺机械设备制造有限公司 | Plastic calendering device convenient to clear up calendering wheel |
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Application publication date: 20220311 |