CN117383907A - Preparation process of low dielectric loss microwave electronic ceramic material - Google Patents

Preparation process of low dielectric loss microwave electronic ceramic material Download PDF

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Publication number
CN117383907A
CN117383907A CN202311293273.5A CN202311293273A CN117383907A CN 117383907 A CN117383907 A CN 117383907A CN 202311293273 A CN202311293273 A CN 202311293273A CN 117383907 A CN117383907 A CN 117383907A
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air
microwave
dielectric ceramic
fixedly connected
pair
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CN117383907B (en
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王陆阳
赵华
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Linyi Jincheng Electronics Co ltd
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Linyi Jincheng Electronics Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0052—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with filtering elements moving during filtering operation
    • B01D46/0054—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with filtering elements moving during filtering operation with translational movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2411—Filter cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/4227—Manipulating filters or filter elements, e.g. handles or extracting tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
    • B01D46/682—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/003—Methods for mixing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/003—Methods for mixing
    • B28C5/006—Methods for mixing involving mechanical aspects
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
    • C04B35/80—Fibres, filaments, whiskers, platelets, or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/003—Supply-air or gas filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
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    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/52—Constituents or additives characterised by their shapes
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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  • Manufacturing & Machinery (AREA)
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Abstract

The invention discloses a preparation process of a low dielectric loss microwave electronic ceramic material, which belongs to the technical field of microwave dielectric ceramic preparation, and the invention has the advantages that the unique molecular structure and thermal behavior of thermotropic liquid crystal copolyester show extremely low dielectric loss in a high frequency band, meanwhile, the synergistic assistance of inorganic filler is utilized to improve the strength and the dimensional stability of the thermotropic liquid crystal copolyester, the dielectric loss of the thermotropic liquid crystal copolyester is further reduced, the improved thermotropic liquid crystal copolyester is compounded with the microwave dielectric ceramic, and the molecular properties of the thermotropic liquid crystal copolyester and the microwave dielectric ceramic are regulated with the assistance of a coupling agent, a modifying agent and a stabilizing agent, so that the performance of the thermotropic liquid crystal copolyester and the microwave dielectric ceramic material are mutually synergistically enhanced, thus the microwave dielectric ceramic material with more excellent low dielectric loss can be obtained, the problems of waveguide loss, signal coupling and the like in a microwave circuit are reduced, the transmission efficiency of microwave signals is improved, the miniaturization and the integrated low dielectric loss requirement of a communication device are further met, and the use effect is enhanced.

Description

Preparation process of low dielectric loss microwave electronic ceramic material
Technical Field
The invention relates to the technical field of microwave dielectric ceramic preparation, in particular to a preparation process of a low dielectric loss microwave electronic ceramic material.
Background
The microwave electronic ceramic, namely microwave dielectric ceramic, refers to a ceramic material which is used as a dielectric material in a microwave frequency band circuit and performs one or more functions, and the microwave dielectric ceramic is used as a novel electronic material in modern communication as a resonator, a filter, a dielectric substrate, a dielectric antenna, a dielectric guided wave loop and the like, and is widely applied to various fields of microwave technology, such as mobile phones, automobile phones, cordless phones, television satellite receivers, satellite broadcasting, radars, radio remote controls and the like.
At present, microwave dielectric ceramics are mainly applied to microwave frequency band circuits as dielectric materials, along with development and technology of science and technology, people start to pursue miniaturization and integration of communication devices, so that dielectric loss of the microwave dielectric ceramics is required to exert lower requirements, damage of electromagnetic wave energy is further reduced, excellent frequency selection characteristics are guaranteed, insertion loss of devices at high frequency is reduced, the microwave dielectric ceramics in the prior art are not easy to meet the requirement of low dielectric loss, technology for improving the microwave dielectric ceramics is urgently needed, a series of procedures such as crushing grinding, high-temperature fusion, cooling cleaning, air drying impurity removal, high-temperature sintering, cooling discharging and the like are needed in the preparation process of the microwave dielectric ceramics, in the air drying impurity removal process of the air drying impurity removal device in the prior art, only blowing is carried out on the surface of the microwave dielectric ceramics by a fan, the process is simpler, the air drying impurity removal device is not complete enough, meanwhile, the cleaning of impurities is insufficient, residues are easy to occur, and the technology for improving the air drying impurity removal device is urgently needed, and the equipment is urgently needed.
Therefore, the invention provides a preparation process of the low dielectric loss microwave electronic ceramic material.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention aims to provide a preparation process of a low dielectric loss microwave electronic ceramic material, which is characterized in that the thermotropic liquid crystal copolyester shows extremely low dielectric loss in a high frequency band due to the unique molecular structure and thermal behavior, meanwhile, the strength and the dimensional stability of the thermotropic liquid crystal copolyester are improved by the synergistic assistance of inorganic fillers, the dielectric loss of the thermotropic liquid crystal copolyester is further reduced, the improved thermotropic liquid crystal copolyester is compounded with the microwave dielectric ceramic, and the molecular properties of the thermotropic liquid crystal copolyester and the microwave dielectric ceramic are regulated with the assistance of a coupling agent, a modifying agent and a stabilizing agent, so that the performance of the thermotropic liquid crystal copolyester and the microwave dielectric ceramic material are mutually synergistically enhanced, thus the microwave dielectric ceramic material with more excellent low dielectric loss can be obtained, the problems of waveguide loss, signal coupling and the like in a microwave circuit are reduced, the transmission efficiency of microwave signals is improved, the miniaturization and the integrated low dielectric loss requirements of a communication device are further met, and the use effect is enhanced.
In order to solve the problems, the invention adopts the following technical scheme that the preparation process of the low dielectric loss microwave electronic ceramic material comprises the following raw materials in parts by weight: 45-50 parts of microwave dielectric ceramic, 30-50 parts of thermotropic liquid crystal copolyester, 10-20 parts of inorganic filler, 1-2 parts of coupling agent, 0.5-1 part of modifier and 0.5-1 part of stabilizer, and comprises the following steps:
s1, firstly, respectively weighing raw materials with corresponding weight according to a preset proportion, crushing a microwave dielectric ceramic material, and grinding and filtering the crushed small microwave dielectric ceramic material to obtain powdery microwave dielectric ceramic;
s2, mixing the thermotropic liquid crystal copolyester and the inorganic filler to obtain a mixture, then fusing the mixture with the powdery microwave dielectric ceramic in a high-temperature environment, and adding a coupling agent, a modifier and a stabilizer to perform auxiliary fusion, so as to obtain a fused microwave dielectric ceramic mixture;
s3, cooling the microwave dielectric ceramic mixture, placing the cooled microwave dielectric ceramic mixture into water for cleaning, removing impurities in the cooled microwave dielectric ceramic mixture, airing for a period of time, placing the cooled microwave dielectric ceramic mixture into a mould with a required shape, and pressing the cooled microwave dielectric ceramic mixture into the required shape by a machine to obtain a microwave dielectric ceramic mixed blank;
s4, placing the microwave dielectric ceramic mixed blank after compression molding into an air-drying impurity removing device, drying to remove water in the microwave dielectric ceramic mixed blank, cleaning impurities remained on the surface of the microwave dielectric ceramic mixed blank to obtain a clean microwave dielectric ceramic mixed blank, then placing the microwave dielectric ceramic mixed blank into a high-temperature furnace, heating to 1400 ℃ and sintering for 8 hours to form porcelain, and taking out the ceramic after cooling to obtain the low-dielectric-loss microwave dielectric ceramic mixed material.
Further, the inorganic filler is one of hollow glass beads or low-dielectric glass fibers, the coupling agent is a silane coupling agent, the modifier is one of dopamine or dopamine hydrochloride, and the stabilizer is a hindered amine light stabilizer.
Further, air-dry edulcoration device in S4 includes unable adjustment base, unable adjustment base' S upper end fixedly connected with a pair of backup pad, and fixedly connected with links up the apron between the upper end of a pair of backup pad, unable adjustment base upper end fixedly connected with bearing is close to strain a section of thick bamboo, the inside that bearing is close to strain a section of thick bamboo is equipped with air-dry thick bamboo, and bearing is close to strain a section of thick bamboo and air-dry and be equipped with the cartridge between the thick section of thick bamboo, the air-heater is installed to the upper end of linking up the apron, the lower extreme of linking up the apron inlays and establishes and install the wind scooper, and wind scooper and air-heater fixed connection, be equipped with horizontal mechanism of blowing between air-heater and the bearing is close to strain elevating system with air-dry between the thick section of thick bamboo.
Further, insert and close the subassembly including a plurality of arc pieces with the tight section of thick bamboo inner wall fixed connection of bearing, air-dry coarse filtration section of thick bamboo's outer end fixedly connected with a plurality of inserts, the outer end of a plurality of arc pieces has all been excavated the slot, and a plurality of inserts are located a plurality of slots respectively, a plurality of the equal fixedly connected with blotter of inner wall of slot, and the insert contacts with the blotter.
Further, the pore diameter of the bearing dense filter cylinder is smaller than that of the air-drying coarse filter cylinder, and galvanized layers are arranged on the surfaces of the bearing dense filter cylinder and the air-drying coarse filter cylinder.
Further, the horizontal blowing mechanism includes a pair of shunt tubes with both ends fixed connection about the air heater, a pair of the one end that the backup pad is close to all fixedly connected with round bar, and the outer end rotation of round bar is connected with the wind-guiding rotary oar, wind-guiding rotary oar is corresponding with the shunt tubes, the outer end fixedly connected with a pair of first single-sided magnet piece of wind-guiding rotary oar, the outer end fixedly connected with a pair of heat-conducting tube of bearing dense filter cylinder, and the inside sliding connection of heat-conducting tube has the piston, a pair of the one end that the piston kept away from all fixedly connected with push-pull rod, a pair of the inner wall of heat-conducting tube all digs the through-hole, and a pair of one end that the push-pull rod kept away from all passes the through-hole to fixedly connected with second single-sided magnet piece, a pair of the outer end of push-pull rod all overlaps and is equipped with extension spring, and extension spring's both ends are respectively with heat-conducting tube and piston fixed connection, the one end that first single-sided magnet piece is close to each other.
Further, the outer end of the heat conduction cylinder is provided with a heat conduction layer, and diamond powder is filled in the heat conduction layer.
Further, deformation elevating system is including installing respectively at a pair of control switch of a pair of heat-conducting tube inside, a pair of control switch contacts with a pair of piston respectively, all fixedly connected with side joint frame between the left and right sides of bearing dense filter tube and unable adjustment base's the upper end, and side joint fixedly connected with connecting tube between frame and the heat-conducting tube, the internally mounted who links up the pipe has illumination control lamp, and it and control switch electric connection, a pair of the inside of side joint frame is all fixedly connected with a pair of deformation telescopic link, and the both ends all dig about the bearing dense filter tube have the perforation, two pairs of deformation telescopic link all pass the perforation mutually to fixedly connected with removes the gyro wheel, air-dry coarse filter tube's lower extreme fixedly connected with a pair of triangle seat, and remove the gyro wheel and contact with the triangle seat.
Further, the pair of deformation telescopic rods are made of photoinduced shape memory polymer materials, the initial state of the deformation telescopic rods is a shrinkage state, and the deformation telescopic rods are matched with the lamplight of the illumination control lamp.
Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) According to the invention, the thermotropic liquid crystal copolyester shows extremely low dielectric loss in a high frequency band due to the unique molecular structure and thermal behavior, meanwhile, the strength and the dimensional stability of the thermotropic liquid crystal copolyester are improved by the synergistic assistance of the inorganic filler, the dielectric loss of the thermotropic liquid crystal copolyester is further reduced, the improved thermotropic liquid crystal copolyester is compounded with the microwave dielectric ceramic, and the molecular properties of the thermotropic liquid crystal copolyester and the microwave dielectric ceramic are regulated with the assistance of the coupling agent, the modifier and the stabilizer, so that the performances of the thermotropic liquid crystal copolyester and the microwave dielectric ceramic are mutually synergistically enhanced, thus a microwave dielectric ceramic material with more excellent low dielectric loss can be obtained, the problems of waveguide loss, signal coupling and the like in a microwave circuit are reduced, the transmission efficiency of microwave signals is improved, the miniaturization and integrated low dielectric loss requirements of a communication device are further met, and the use effect is enhanced.
(2) According to the invention, the hollow glass beads or the low dielectric glass fibers are used as the inorganic filler, so that the strength and the dimensional stability of the thermotropic liquid crystal copolyester can be improved, the dielectric loss of the thermotropic liquid crystal copolyester can be further reduced, the silane coupling agent can enhance the bonding strength between the microwave dielectric ceramic and the inorganic filler as well as between the thermotropic liquid crystal copolyester, and the interaction force between the mixed materials is enhanced by matching with the hindered amine light stabilizer, so that the structure of the mixed materials is more stable, meanwhile, the dopamine or the dopamine hydrochloride is used as the modifier, the properties and the functions of various raw materials in the mixed materials are changed, and the properties and the functions of the raw materials are mutually and synergistically enhanced under the mixing action, so that the performance of the composite material is effectively improved.
(3) According to the invention, in the process of air drying and impurity removal of the microwave dielectric ceramic mixed blank, the air heater blows downwards through the air guide hopper to dry, and the transverse blowing mechanism utilizes the air split by the air heater to collect the dissipated heat and blows the air to the microwave dielectric ceramic mixed blank along the horizontal direction, so that the air drying of the microwave dielectric ceramic mixed blank is realized from multiple directions, the air drying effect is enhanced, meanwhile, in the air drying process, the deformation lifting mechanism drives the air drying coarse filter cylinder to move up and down under the assistance of the plugging component, and impurities are driven to drop sufficiently under the action of air blowing, so that impurity removal is more complete, residues are reduced, and the air drying impurity removal efficiency is effectively improved.
(4) According to the invention, the plurality of inserting blocks on the air-dried coarse filter cylinder are inserted downwards along the positions of the inserting grooves, so that the air-dried coarse filter cylinder can be driven to be clamped into the bearing dense filter cylinder to realize convenient installation, and when the air-dried coarse filter cylinder is required to be taken and disassembled, the inserting blocks are pulled to move upwards to be separated from the inserting grooves, so that the air-dried coarse filter cylinder is driven to be separated from the bearing dense filter cylinder, the air-dried microwave medium ceramic mixed blank is driven to be discharged, and meanwhile, dust on the bearing dense filter cylinder is also convenient for staff to clean.
(5) According to the invention, the filter pore diameter of the bearing dense filter cylinder is smaller than that of the air-drying coarse filter cylinder, so that impurities falling on the air-drying coarse filter cylinder can be collected, the subsequent cleaning is convenient, and the surfaces of the bearing dense filter cylinder and the air-drying coarse filter cylinder are provided with galvanized layers, so that the bearing dense filter cylinder and the air-drying coarse filter cylinder are not easy to damage in the long-term use process, and the service life of the bearing dense filter cylinder and the air-drying coarse filter cylinder is prolonged.
(6) In the invention, the air heater blows air to the lower ends of the left side and the right side of the split pipe to blow the air guide paddles to rotate so as to drive the first single-sided magnet blocks to rotate, and in the rotating process, when the air heater corresponds to the second single-sided magnet blocks, the second single-sided magnet blocks are driven to move towards the inside of the heat conducting cylinder by repulsive interaction so as to drive the push-pull rod and the piston to move towards the direction of the bearing sealing cylinder, the heat conducting cylinder has heat conducting effect, heat dissipated in hot air blown by the air heater can be conducted and led into the heat conducting cylinder to drive the inside of the heat conducting cylinder to rise, and the heat conducting cylinder is sprayed to the microwave medium ceramic mixed blank under the pushing of the piston, and when the first single-sided magnet blocks and the second single-sided magnet blocks are separated, magnetic repulsive force is lost, and reset is carried out under the elastic reset effect of the stretching spring, and when the first single-sided magnet blocks and the second single-sided magnet blocks correspond to each other next time, the air blowing is pressed again, so that the microwave medium ceramic mixed blank is dried from the horizontal direction, and the air drying is carried out, so that the air drying effect is realized from multiple directions, and the air drying effect is enhanced.
(7) According to the invention, the heat conduction layer filled with diamond powder has good heat conduction effect, and can conduct and collect heat dissipated in hot air, so that subsequent heat utilization is facilitated, heat loss is reduced, and air drying effect is enhanced.
(8) In the invention, the piston pushes the heat inside the heat conducting cylinder to the microwave medium ceramic mixed blank in the process of supporting the dense filter cylinder, contacts with the control switch and presses the control switch to drive the illumination control lamp to light, so that the deformation telescopic rod deforms under the action of illumination to extend, the two pairs of movable rollers are pushed to move in opposite directions along the inclined end of the triangular base, the air-dried coarse filter cylinder is extruded to move upwards under the assistance of the inserting block and the inserting groove, when the piston resets, the pressing of the control switch is canceled, the illumination control lamp is extinguished, the deformation telescopic rod loses the illumination reset to shrink and reset, the movable roller is pulled to reset, the air-dried coarse filter cylinder and the triangular base lose the extrusion and then reset downwards, meanwhile, the inserting block also resets downwards in the inserting groove and contacts with the cushion pad, the buffer is realized during the downward reset, the impact force of falling is reduced, the damage to the air-dried coarse filter cylinder is avoided, the next time of extrusion is repeated, the impurities are driven to fall rapidly by the aid of the air blowing effect of vibration generated by the up and down motion, the impurities are removed more fully and comprehensively, and residues are reduced.
(9) According to the invention, the deformation telescopic rod made of the photoinduced shape memory polymer material has a memory effect, the deformation telescopic rod deforms and extends under the illumination effect of the illumination control lamp, and after the illumination control lamp is extinguished, the deformation telescopic rod is restored to the initial shrinkage state, so that the brightness effect of the illumination control lamp is utilized, the deformation telescopic rod is driven to deform and stretch, and the air-dried coarse filter cylinder and the triangular base are extruded to move up and down.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a partial engagement of a support dense filter cartridge and an air-dried coarse filter cartridge according to the present invention;
FIG. 3 is a schematic view of the structure of the air blower and the air scoop and the shunt tube according to the present invention;
FIG. 4 is a schematic view of a partial perspective of a lateral blowing mechanism according to the present invention;
FIG. 5 is a schematic view of a partial cross-sectional structure of the present invention;
fig. 6 is a schematic view of a partial enlarged structure at a in fig. 5 according to the present invention.
The reference numerals in the figures illustrate:
1. a fixed base; 2. a support plate; 3. a cover plate is connected; 4. supporting the dense filter cartridge; 5. air-drying the coarse filter cylinder; 6. an insertion assembly; 601. an arc-shaped block; 602. inserting blocks; 603. a slot; 604. a cushion pad; 7. an air heater; 8. an air guide hopper; 9. a transverse blowing mechanism; 901. a shunt; 902. a round bar; 903. wind guiding propeller; 904. a first single-sided magnet block; 905. a heat conduction tube; 906. a second single-sided magnet block; 907. a push-pull rod; 908. a piston; 909. a tension spring; 10. a deformation lifting mechanism; 1001. a control switch; 1002. a connecting pipe; 1003. a lighting control lamp; 1004. a side connection frame; 1005. a deformation telescopic rod; 1006. moving the roller; 1007. and a triangular base.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present invention are within the protection scope of the present invention.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Examples
The preparation process of the low dielectric loss microwave electronic ceramic material comprises the following raw materials in parts by weight: 45-50 parts of microwave dielectric ceramic, 30-50 parts of thermotropic liquid crystal copolyester, 10-20 parts of inorganic filler, 1-2 parts of coupling agent, 0.5-1 part of modifier and 0.5-1 part of stabilizer, and comprises the following steps:
s1, firstly, respectively weighing raw materials with corresponding weight according to a preset proportion, crushing a microwave dielectric ceramic material, and grinding and filtering the crushed small microwave dielectric ceramic material to obtain powdery microwave dielectric ceramic;
s2, mixing the thermotropic liquid crystal copolyester and the inorganic filler to obtain a mixture, then fusing the mixture with the powdery microwave dielectric ceramic in a high-temperature environment, and adding a coupling agent, a modifier and a stabilizer to perform auxiliary fusion, so as to obtain a fused microwave dielectric ceramic mixture;
s3, cooling the microwave dielectric ceramic mixture, placing the cooled microwave dielectric ceramic mixture into water for cleaning, removing impurities in the cooled microwave dielectric ceramic mixture, airing for a period of time, placing the cooled microwave dielectric ceramic mixture into a mould with a required shape, and pressing the cooled microwave dielectric ceramic mixture into the required shape by a machine to obtain a microwave dielectric ceramic mixed blank;
s4, placing the microwave dielectric ceramic mixed blank after compression molding into an air-drying impurity removing device, drying to remove water in the microwave dielectric ceramic mixed blank, cleaning impurities remained on the surface of the microwave dielectric ceramic mixed blank to obtain a clean microwave dielectric ceramic mixed blank, then placing the microwave dielectric ceramic mixed blank into a high-temperature furnace, heating to 1400 ℃ and sintering for 8 hours to form porcelain, and taking out the ceramic after cooling to obtain the low-dielectric-loss microwave dielectric ceramic mixed material.
In the using process, the thermotropic liquid crystal copolyester shows extremely low dielectric loss in a high frequency band due to the unique molecular structure and the thermal behavior, meanwhile, the strength and the dimensional stability of the thermotropic liquid crystal copolyester are improved by the synergistic assistance of the inorganic filler, the dielectric loss of the thermotropic liquid crystal copolyester is further reduced, the improved thermotropic liquid crystal copolyester is compounded with the microwave dielectric ceramic, the molecular properties of the thermotropic liquid crystal copolyester and the microwave dielectric ceramic are regulated under the assistance of the coupling agent, the modifying agent and the stabilizing agent, and the properties of the thermotropic liquid crystal copolyester and the microwave dielectric ceramic are mutually synergistically enhanced, so that the microwave dielectric ceramic material with more excellent low dielectric loss can be obtained, the problems of waveguide loss, signal coupling and the like in a microwave circuit are reduced, the transmission efficiency of microwave signals is improved, the requirements of miniaturization and integration of communication devices are further met, and the using effect is enhanced.
The inorganic filler is one of hollow glass beads or low-dielectric glass fibers, the coupling agent is a silane coupling agent, the modifier is one of dopamine or dopamine hydrochloride, and the stabilizer is a hindered amine light stabilizer.
In the use process of the scheme, the hollow glass beads or the low dielectric glass fibers are used as inorganic fillers, so that the strength and the dimensional stability of the thermotropic liquid crystal copolyester can be improved, the dielectric loss of the thermotropic liquid crystal copolyester can be further reduced, the silane coupling agent can enhance the bonding strength between the microwave dielectric ceramic and the inorganic fillers as well as between the thermotropic liquid crystal copolyester, and the interaction force between the mixed materials is enhanced by matching with the hindered amine light stabilizer, so that the structure of the mixed materials is more stable, meanwhile, the dopamine or the dopamine hydrochloride is used as a modifier, the properties and the functions of various raw materials in the mixed materials are changed, and the properties and the functions of the various raw materials are mutually and synergistically enhanced under the mixing action, so that the performance of the composite material is effectively improved.
Referring to fig. 1-6, the air-drying impurity removing device in S4 includes a fixed base 1, the upper end of the fixed base 1 is fixedly connected with a pair of support plates 2, and a connection cover plate 3 is fixedly connected between the upper ends of the pair of support plates 2, the upper end of the fixed base 1 is fixedly connected with a bearing dense filter cylinder 4, an air-drying coarse filter cylinder 5 is arranged in the bearing dense filter cylinder 4, an inserting assembly 6 is arranged between the bearing dense filter cylinder 4 and the air-drying coarse filter cylinder 5, a hot air blower 7 is mounted at the upper end of the connection cover plate 3, a wind guide hopper 8 is mounted at the lower end of the connection cover plate 3 in an embedding manner, the wind guide hopper 8 is fixedly connected with the hot air blower 7, a transverse blowing mechanism 9 is arranged between the hot air blower 7 and the bearing dense filter cylinder 4, and a deformation lifting mechanism 10 is arranged between the transverse blowing mechanism 9 and the air-drying coarse filter cylinder 5.
This scheme is in the use, microwave medium pottery mixes blank and air-dries edulcoration in-process, when air heater 7 is dried through wind scooper 8 down blowing, horizontal blowing mechanism 9 utilizes the wind of air heater 7 reposition of redundant personnel, collect the heat of loss, and blow to microwave medium pottery and mix the blank along the horizontal direction, realize drying it from a plurality of directions, the reinforcing air-dries the effect, simultaneously in the air-drying process, deformation elevating system 10 drives and air-dries coarse filter cartridge 5 and carries out the up-and-down motion under the assistance of inserting assembly 6, it falls down to drive impurity fully under the effect of blowing, make the edulcoration more abundant comprehensive, reduce remaining, thereby effectual improvement air-dries edulcoration efficiency.
Referring to fig. 1-2 and fig. 5-6, the plugging assembly 6 includes a plurality of arc blocks 601 fixedly connected with the inner wall of the supporting filter cylinder 4, a plurality of plugging blocks 602 fixedly connected with the outer end of the air-drying coarse filter cylinder 5, slots 603 are respectively cut at the outer ends of the plurality of arc blocks 601, the plurality of plugging blocks 602 are respectively located in the plurality of slots 603, a buffer pad 604 is fixedly connected with the inner wall of the plurality of slots 603, and the plugging blocks 602 are contacted with the buffer pad 604.
This scheme is in the use, air-dry a plurality of inserts 602 on the thick filter cartridge 5 along slot 603 position, inserts downwards, can drive air-dry thick filter cartridge 5 card and go into the support dense filter cartridge 4 in, realize convenient installation, and when need getting the material dismantlement, pulling insert 602 upward movement, separate with slot 603 to drive air-dry thick filter cartridge 5 and the support dense filter cartridge 4 phase separation, drive the microwave medium pottery mixed blank after the air-dry and go out the ejection of compact, also make things convenient for the staff to clear up the dust on the support dense filter cartridge 4 simultaneously.
Referring to fig. 1-2 and 5, the pore size of the supporting dense filter cartridge 4 is smaller than that of the air-drying coarse filter cartridge 5, and the surfaces of the supporting dense filter cartridge 4 and the air-drying coarse filter cartridge 5 are provided with galvanized layers.
According to the scheme, in the use process, the filter pore diameter of the bearing dense filter cylinder 4 is smaller than that of the air-drying coarse filter cylinder 5, impurities falling on the air-drying coarse filter cylinder 5 can be collected, subsequent cleaning is convenient, and the surfaces of the bearing dense filter cylinder 4 and the air-drying coarse filter cylinder 5 are provided with galvanized layers, so that the bearing dense filter cylinder 4 and the air-drying coarse filter cylinder 5 are not easy to damage in the long-term use process, and the service life of the bearing dense filter cylinder is prolonged.
Referring to fig. 1 and fig. 3-5, the transverse blowing mechanism 9 includes a pair of split pipes 901 fixedly connected to left and right ends of the air heater 7, one ends of the pair of support plates 2, which are close to each other, are fixedly connected with round rods 902, outer ends of the round rods 902 are rotatably connected with wind guiding rotary paddles 903, the wind guiding rotary paddles 903 correspond to the split pipes 901, outer ends of the wind guiding rotary paddles 903 are fixedly connected with a pair of first single-sided magnet blocks 904, outer ends of the support sealing cylinders 4 are fixedly connected with a pair of heat conducting cylinders 905, pistons 908 are slidably connected in the heat conducting cylinders 905, one ends, which are far away from each other, of the pair of pistons 908 are fixedly connected with push-pull rods 907, through holes are formed in inner walls of the pair of heat conducting cylinders 905, one ends, which are far away from each other, of the pair of push-pull rods 907 penetrate through the through holes, are fixedly connected with second single-sided magnet blocks 906, and outer ends of the pair of push-pull rods 907 are sleeved with extension springs 909, two ends of the extension springs are fixedly connected with the heat conducting cylinders 905 and the pistons 908, and one ends, which are close to each other, of the first single-sided magnet blocks 904 and the second magnet blocks are repelled.
In the use process of the scheme, the air heater 7 blows air to the lower ends of the left side and the right side through the pair of split pipes 901, blows to the pair of air guide rotary paddles 903, rotates to drive the pair of first single-sided magnet blocks 904, and when the pair of air guide rotary paddles rotates and the pair of first single-sided magnet blocks 906 correspond to the second single-sided magnet blocks 906, the second single-sided magnet blocks 906 are driven to move towards the inside of the heat conducting cylinder 905 by repulsive interaction, so that the push-pull rod 907 and the piston 908 are driven to move towards the direction of the bearing dense filter cylinder 4, the heat conducting cylinder 905 has a heat conducting effect, heat dissipated in hot air blown by the air heater 7 can be conducted, guided into the inside of the heat conducting cylinder to drive the inside of the heat conducting cylinder to rise, and sprayed to microwave medium ceramic mixed blanks under the pushing of the piston 908, and when the first single-sided magnet blocks 904 are separated from the second single-sided magnet blocks 906, magnetic repulsive force is lost, reset is carried out under the elastic reset effect of the extension springs 909, and when the first single-sided magnet blocks 904 correspond to the second single-sided magnet blocks 906, the second single-sided magnet blocks are extruded again, the air is repeatedly carried out, and the effect of drying the air drying medium is carried out from the horizontal direction to a plurality of directions, and the air drying effect is achieved.
Referring to fig. 1 and 4, a heat conducting layer is disposed at an outer end of the heat conducting barrel 905, and diamond powder is filled in the heat conducting layer.
This scheme is in the use, has good heat conduction through the heat conduction layer that the inside was filled with diamond powder, can conduct the heat of loss in the hot-blast, and the follow-up heat utilization of being convenient for reduces the heat and runs off, reinforcing air-dries the effect.
Referring to fig. 1 and fig. 4-5, the deformation elevating mechanism 10 includes a pair of control switches 1001 respectively mounted inside a pair of heat conductive cylinders 905, the pair of control switches 1001 respectively contact with a pair of pistons 908, a side connection frame 1004 is fixedly connected between the left and right ends of the supporting dense filter cylinder 4 and the upper end of the fixing base 1, a connection pipe 1002 is fixedly connected between the side connection frame 1004 and the heat conductive cylinders 905, an illumination control lamp 1003 is mounted inside the connection pipe 1002 and electrically connected with the control switches 1001, a pair of deformation telescopic rods 1005 are fixedly connected inside the pair of side connection frame 1004, and the left and right ends of the supporting dense filter cylinder 4 are respectively provided with perforations, one ends of the two pairs of deformation telescopic rods 1005 close to each other pass through the perforations, and are fixedly connected with a movable roller 1006, the lower end of the air-dried coarse filter cylinder 5 is fixedly connected with a pair of triangular bases 1007, and the movable roller 1006 is contacted with the triangular bases 1007.
In the use process, the piston 908 pushes the heat inside the heat conducting cylinder 905 to the microwave dielectric ceramic mixed blank to be in contact with the control switch 1001 and presses the heat conducting cylinder, so that the heat conducting cylinder drives the illumination control lamp 1003 to be lightened, the deformation telescopic rod 1005 is deformed under the action of illumination, the deformation telescopic rod is extended, the two pairs of movable rollers 1006 are pushed to move in opposite directions along the inclined end of the triangular base 1007, the air-dried coarse filter cylinder 5 is extruded to move upwards under the assistance of the inserting block 602 and the inserting groove 603, when the piston 908 resets, the pressing of the control switch 1001 is canceled, the illumination control lamp 1003 is extinguished, the deformation telescopic rod 1005 is retracted and reset after losing the illumination, the movable rollers 1006 are pulled to reset, the air-dried coarse filter cylinder 5 and the triangular base 1007 are reset downwards after losing the extrusion, meanwhile, the inserting block 602 is also reset downwards in the inserting groove 603 and is contacted with the buffer pad 604, the impact force of the downward reset is reduced, the air-dried coarse filter cylinder 5 is prevented from being damaged, the air-dried coarse filter cylinder moves upwards again when being extruded next time, the air-dried coarse filter cylinder is repeatedly, the influence generated by the up-down movement is utilized, the action of the up-down movement is eliminated, the effect of the air-dried coarse filter cylinder is reduced, the air cylinder is more fully blown, and the impurities are fully and more removed.
Referring to fig. 5, a pair of deformation telescopic rods 1005 are made of photoinduced shape memory polymer materials, the initial state of the deformation telescopic rods 1005 is a contracted state, and the deformation telescopic rods 1005 are matched with the light of the lighting control lamp 1003.
In the use process of the scheme, the deformation telescopic rod 1005 made of the photoinduced shape memory polymer material has a memory effect, the deformation telescopic rod 1005 deforms and extends under the illumination effect of the illumination control lamp 1003, and after the illumination control lamp 1003 is extinguished, the deformation telescopic rod 1005 is restored to the initial shrinkage state, so that the brightness effect of the illumination control lamp 1003 is utilized, the deformation telescopic rod 1005 is driven to deform and stretch, and the air-dried coarse filter cylinder 5 and the triangular base 1007 are extruded to move up and down.
The above description is only of the preferred embodiments of the present invention; the scope of the invention is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present invention, and the technical solution and the improvement thereof are all covered by the protection scope of the present invention.

Claims (9)

1. A preparation process of a low dielectric loss microwave electronic ceramic material is characterized by comprising the following steps of: the material comprises the following raw materials in parts by weight: 45-50 parts of microwave dielectric ceramic, 30-50 parts of thermotropic liquid crystal copolyester, 10-20 parts of inorganic filler, 1-2 parts of coupling agent, 0.5-1 part of modifier and 0.5-1 part of stabilizer, and comprises the following steps:
s1, firstly, respectively weighing raw materials with corresponding weight according to a preset proportion, crushing a microwave dielectric ceramic material, and grinding and filtering the crushed small microwave dielectric ceramic material to obtain powdery microwave dielectric ceramic;
s2, mixing the thermotropic liquid crystal copolyester and the inorganic filler to obtain a mixture, then fusing the mixture with the powdery microwave dielectric ceramic in a high-temperature environment, and adding a coupling agent, a modifier and a stabilizer to perform auxiliary fusion, so as to obtain a fused microwave dielectric ceramic mixture;
s3, cooling the microwave dielectric ceramic mixture, placing the cooled microwave dielectric ceramic mixture into water for cleaning, removing impurities in the cooled microwave dielectric ceramic mixture, airing for a period of time, placing the cooled microwave dielectric ceramic mixture into a mould with a required shape, and pressing the cooled microwave dielectric ceramic mixture into the required shape by a machine to obtain a microwave dielectric ceramic mixed blank;
s4, placing the microwave dielectric ceramic mixed blank after compression molding into an air-drying impurity removing device, drying to remove water in the microwave dielectric ceramic mixed blank, cleaning impurities remained on the surface of the microwave dielectric ceramic mixed blank to obtain a clean microwave dielectric ceramic mixed blank, then placing the microwave dielectric ceramic mixed blank into a high-temperature furnace, heating to 1400 ℃ and sintering for 8 hours to form porcelain, and taking out the ceramic after cooling to obtain the low-dielectric-loss microwave dielectric ceramic mixed material.
2. The process for preparing a low dielectric loss microwave electronic ceramic material according to claim 1, wherein the process comprises the following steps: the inorganic filler is one of hollow glass beads or low-dielectric glass fibers, the coupling agent is a silane coupling agent, the modifier is one of dopamine or dopamine hydrochloride, and the stabilizer is a hindered amine light stabilizer.
3. The process for preparing a low dielectric loss microwave electronic ceramic material according to claim 1, wherein the process comprises the following steps: air-dry edulcoration device in S4 includes unable adjustment base (1), unable adjustment base (1)' S upper end fixedly connected with a pair of backup pad (2), and fixedly connected with links up apron (3) between the upper end of a pair of backup pad (2), unable adjustment base (1) upper end fixedly connected with support dense filter cylinder (4), the inside of support dense filter cylinder (4) is equipped with air-dry coarse filter cylinder (5), and is equipped with between support dense filter cylinder (4) and air-dry coarse filter cylinder (5) and insert and close subassembly (6), air-heater (7) are installed to the upper end of linking apron (3), air-guide funnel (8) are inlayed to the lower extreme of linking apron (3), and air-guide funnel (8) and air-heater (7) fixed connection, be equipped with horizontal mechanism of blowing (9) between air-dry coarse filter cylinder (5), and be equipped with deformation elevating system (10) between horizontal mechanism of blowing (9) and the support dense filter cylinder (5).
4. A process for preparing a low dielectric loss microwave electronic ceramic material according to claim 3, wherein: the plugging component (6) comprises a plurality of arc blocks (601) fixedly connected with the inner wall of the bearing dense filter cylinder (4), the outer ends of the air-drying coarse filter cylinders (5) are fixedly connected with a plurality of plug blocks (602), slots (603) are formed in the outer ends of the arc blocks (601), the plug blocks (602) are respectively located in the slots (603), a plurality of buffer pads (604) are fixedly connected with the inner wall of the slots (603), and the plug blocks (602) are in contact with the buffer pads (604).
5. The process for preparing the low dielectric loss microwave electronic ceramic material according to claim 4, wherein the process comprises the following steps: the pore diameter of the bearing dense filter cylinder (4) is smaller than that of the air-drying coarse filter cylinder (5), and galvanized layers are arranged on the surfaces of the bearing dense filter cylinder (4) and the air-drying coarse filter cylinder (5).
6. A process for preparing a low dielectric loss microwave electronic ceramic material according to claim 3, wherein: the horizontal blowing mechanism (9) comprises a pair of shunt tubes (901) fixedly connected with the left end and the right end of the air heater (7), one pair of round rods (902) are fixedly connected to one ends, which are close to each other, of the supporting plates (2), wind guiding propellers (903) are rotatably connected to the outer ends of the round rods (902), the wind guiding propellers (903) correspond to the shunt tubes (901), a pair of first single-sided magnet blocks (904) are fixedly connected to the outer ends of the wind guiding propellers (903), a pair of heat conducting cylinders (905) are fixedly connected to the outer ends of the supporting dense filter cylinders (4), pistons (908) are connected to the inner ends, which are far away from each other, of the pistons (908) are fixedly connected with push-pull rods (907), through holes are formed in the inner walls of the heat conducting cylinders (905), one ends, which are far away from each other, of the pair of the heat conducting rods (907) penetrate through the through holes, second single-sided magnet blocks (906) are fixedly connected to each other, a pair of outer ends of the wind guiding propellers (903) are sleeved with a stretching spring (905), and the stretching spring (905) is connected to the first single-sided magnet blocks (908) which are close to the first single-sided magnet blocks (908), and the first single-sided magnet blocks (908) are respectively and the single-sided magnet blocks (908) are repelled.
7. The process for preparing the low dielectric loss microwave electronic ceramic material according to claim 6, wherein the process comprises the following steps: the outer end of the heat conduction cylinder (905) is provided with a heat conduction layer, and diamond powder is filled in the heat conduction layer.
8. The process for preparing the low dielectric loss microwave electronic ceramic material according to claim 6, wherein the process comprises the following steps: the deformation elevating mechanism (10) comprises a pair of control switches (1001) which are respectively arranged inside a pair of heat conducting cylinders (905), the pair of control switches (1001) are respectively contacted with a pair of pistons (908), side connecting frames (1004) are fixedly connected between the left end and the right end of the bearing dense filter cylinder (4) and the upper end of the fixed base (1), connecting pipes (1002) are fixedly connected between the side connecting frames (1004) and the heat conducting cylinders (905), illumination control lamps (1003) are arranged inside the connecting pipes (1002), the illumination control lamps are electrically connected with the control switches (1001), a pair of deformation telescopic rods (1005) are fixedly connected inside the side connecting frames (1004), the left end and the right end of the bearing dense filter cylinder (1005) are respectively provided with a perforation, one end, close to each other, of each deformation telescopic rod (1005) is respectively penetrated through the perforation, a movable roller (1006) is fixedly connected with a pair of triangular bases (1007), and the lower ends of the air-drying dense filter cylinder (5) are fixedly connected with a pair of triangular bases (1007), and the movable rollers (1006) are in contact with the triangular bases (1006).
9. The process for preparing the low dielectric loss microwave electronic ceramic material according to claim 8, wherein the process comprises the following steps: the pair of deformation telescopic rods (1005) are made of photoinduced shape memory polymer materials, the initial state of the deformation telescopic rods (1005) is a contracted state, and the deformation telescopic rods (1005) are matched with the lamplight of the illumination control lamp (1003).
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