CN110049666B - Microwave thermal conversion material, carrier and preparation method thereof - Google Patents
Microwave thermal conversion material, carrier and preparation method thereof Download PDFInfo
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- CN110049666B CN110049666B CN201910381297.3A CN201910381297A CN110049666B CN 110049666 B CN110049666 B CN 110049666B CN 201910381297 A CN201910381297 A CN 201910381297A CN 110049666 B CN110049666 B CN 110049666B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
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- Environmental & Geological Engineering (AREA)
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- General Engineering & Computer Science (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention belongs to the technical field of microwave heat conversion, and particularly relates to a microwave heat conversion material, a carrier and a preparation method thereof, wherein the microwave heat conversion material is prepared from the following materials in parts by weight: 55-65% of graphite powder, 10-15% of ferrite powder, 15-25% of glass fiber and 5-10% of binder. The invention has the advantages of convenient and simple structure forming, light weight, good insulativity, acid and alkali resistance, pressure resistance and stripping property, stable physical and chemical properties, high temperature resistance, high heat insulation, high temperature resistance up to 1350 ℃, 30 percent of heat energy conversion efficiency of absorbing wave and heat energy conversion compared with the existing heat conversion material, high efficiency and high speed application in microwave waste gas combustion equipment, energy saving up to more than 50 percent compared with the prior RTO burner, no material consumption, simple preparation process, convenient operation, easy forming and lower cost.
Description
Technical Field
The invention belongs to the technical field of microwave thermal conversion, and particularly relates to a microwave thermal conversion material, a carrier and a preparation method thereof.
Background
Microwave absorbing materials (also called radar absorbing materials) or radar stealth materials (radar stealth materials) are materials that can absorb microwaves and electromagnetic energy and have small reflection and scattering. The basic principle of microwave absorption is to convert microwave energy into energy in other forms of motion through some physical mechanism of action and into thermal energy through the dissipative action of that motion. The microwave absorbing material should have good wave absorbing performance, i.e. microwave absorption rate higher than required threshold and wide absorption band. In addition, the microwave absorbing material should also have a small thickness and areal density.
Microwave absorbing materials are classified into two types, electrical loss type and magnetic loss type. The electrical loss type wave-absorbing material is prepared by taking carbon powder or metal particles as a basis and changing the thickness and the depth of a filling agent and the type of the filling agent. The magnetic loss type wave absorbing material is a thin layer material made of polymers such as epoxy polysulfide, silicon rubber, urethane and fluorine elastomer filled with magnetic materials such as ferrite or carbonyl iron powder.
At present, ferrite or rare metal nickel/cobalt is generally adopted in the market as a microwave heat energy conversion material, and the defects are as follows: the structure molding is too difficult, the cost is too high, and a great deal of problems such as extremely loaded down with trivial details of processing link.
Disclosure of Invention
It is an object of the present invention to provide a microwave heat conversion material to solve the above problems in the prior art.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
a microwave heat conversion material is prepared from the following materials in parts by weight: 55-65% of graphite powder, 10-15% of ferrite powder, 15-25% of glass fiber and 5-10% of binder.
The main components of the binder are potassium, sodium, magnesium and aluminum salts of phosphoric acid and silicic acid, oxides of aluminum, potassium, sodium, magnesium and iron, inorganic fibers, nano minerals and the like.
As an improvement, the material is prepared from the following materials in percentage by weight: 60% of graphite powder, 12% of ferrite powder, 20% of glass fiber and 8% of binder.
As an improvement, the binder is a mixture of a cold-bonded pellet binder and an activated carbon binder or a mixture of a metallurgical pellet binder and an activated carbon binder.
Preferably, the weight ratio of the cold-bonded pellet binder or the metallurgical pellet binder to the activated carbon binder is 5: 3.
Another object of the present invention is to provide a microwave heat conversion material support.
The carrier includes the base, be equipped with the support on the base, the support is from last to being equipped with a plurality of support bars down, be equipped with in the support bar microwave heat conversion material.
As an improvement, reinforcing sheets are respectively arranged on two sides of the middle of the support, and a plurality of through holes are formed in the reinforcing sheets.
As a further improvement, the longitudinal section of the bracket is in an inverted U shape.
Preferably, the thickness of the microwave heat conversion material is 2 mm.
Still another object of the present invention is to provide a method for preparing a microwave heat conversion material.
The preparation method comprises the following steps: taking the graphite powder, the ferrite powder, the glass fiber and the binder according to the proportion, blending and stirring uniformly, firing at high temperature to prepare semi-liquid, performing multistage roll forming on the semi-liquid by calendering equipment, and cooling to form a flexible plate-shaped object.
Preferably, the temperature of the high-temperature firing is 1200-.
Due to the adoption of the technical scheme, the invention has the beneficial effects that:
the microwave heat conversion material provided by the invention has the advantages of convenient and simple structure forming, light weight, good insulativity, acid and alkali resistance, pressure resistance and peeling property, stable physical and chemical properties, high temperature resistance and heat resistance, strong heat insulation, high temperature resistance of 1350 ℃, and capability of improving the heat conversion efficiency by 30% compared with the existing heat conversion material for absorbing wave and heat energy conversion, being capable of being applied to microwave waste gas combustion at high efficiency and high speed, saving energy by more than 50% compared with the prior RTO burner, and generating no material consumption. The preparation method of the microwave heat conversion material provided by the invention has the advantages of simple process, convenience in operation, easiness in molding and lower cost.
Drawings
FIG. 1 is a flow chart of a process for preparing a microwave heat conversion material provided by the present invention;
FIG. 2 is a schematic structural diagram of a microwave thermal conversion material carrier provided by the present invention;
in the attached drawing, 1-a base, 2-a bracket, 3-a supporting strip, 4-a microwave heat conversion material, 5-a reinforcing sheet and 6-a through hole.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Example 1
A microwave heat conversion material is prepared from the following materials in parts by weight: 60% of graphite powder, 12% of ferrite powder, 20% of glass fiber, 5% of cold-bonded pellet binder and 3% of activated carbon binder.
Example 2
A microwave heat conversion material is prepared from the following materials in parts by weight: 55% of graphite powder, 15% of ferrite powder, 25% of glass fiber, 6.25% of cold-bonded pellet binder and 3.75% of activated carbon binder.
Example 3
A microwave heat conversion material is prepared from the following materials in parts by weight: 65% of graphite powder, 10% of ferrite powder, 15% of glass fiber, 3.75% of metallurgical pellet binder and 2.25% of activated carbon binder.
The preparation method of the microwave heat conversion material in the above examples 1 to 3, as shown in fig. 1, includes the following steps: taking the graphite powder, the ferrite powder, the glass fiber and the binder according to the proportion, blending and stirring uniformly, sintering at the high temperature of 1200-1350 ℃ to prepare semi-liquid, performing multistage rolling forming on the semi-liquid by a rolling device, and cooling at the temperature of 10-30 ℃ to form a flexible plate-shaped object.
Example 4
As shown in fig. 2, a microwave heat conversion material carrier comprises a base 1, wherein a support 2 is arranged on the base 1, the longitudinal section of the support 2 is in an inverted U shape, the support 2 is provided with a plurality of support bars 3 from top to bottom, microwave heat conversion materials 4 are arranged in the support bars 3, and preferably, the thickness of the microwave heat conversion materials 4 is 2 mm. Reinforcing sheets 5 are respectively arranged on two sides of the middle part of the bracket 2, and a plurality of through holes 6 are arranged on the reinforcing sheets 5. The carrier is convenient for storing the microwave heat conversion material, and the microwave heat conversion material can be freely cut, combined and molded according to the length and the applied shape.
According to the microwave heat conversion material and the microwave heat conversion material carrier provided by the invention, the prepared microwave heat conversion material is shaped into a flexible plate-shaped object, the thickness is about 2mm, the length is randomly cut, the width is generally 1 m, the cost is only 1/6 of materials such as ferrite, nickel, cobalt and the like, the volume is the same, the weight is half light, the microwave energy can be absorbed at high speed, the microwave energy can be quickly converted into high temperature of more than 1350 ℃, and the effect of quickly burning and oxidizing most of organic waste gas is achieved.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. A microwave heat conversion material is characterized by being prepared from the following materials in parts by weight: 55-65% of graphite powder, 10-15% of ferrite powder, 15-25% of glass fiber and 5-10% of a binder, wherein the binder is a mixture of a cold-bonded pellet binder and an active carbon binder or a mixture of a metallurgical pellet binder and an active carbon binder, the graphite powder, the ferrite powder, the glass fiber and the binder are taken according to a certain proportion, are uniformly blended and stirred, are sintered at a high temperature to form a semi-liquid, and the semi-liquid is subjected to multistage roll forming by a calendaring device, is cooled to form a flexible plate-shaped object, so that the microwave heat conversion material is obtained.
2. A microwave heat conversion material according to claim 1, characterized by being made of the following materials in weight ratio: 60% of graphite powder, 12% of ferrite powder, 20% of glass fiber and 8% of binder.
3. A microwave heat conversion material according to claim 1, wherein the weight ratio of the cold agglomerated pellet binder or the metallurgical pellet binder to the activated carbon binder is 5: 3.
4. A microwave heat conversion material carrier is characterized by comprising a base, wherein a support is arranged on the base, a plurality of support bars are arranged on the support from top to bottom, and the microwave heat conversion material as claimed in claim 1 is arranged in each support bar.
5. A microwave heat conversion material carrier according to claim 4, wherein reinforcing plates are respectively provided on both sides of the middle portion of the support, and a plurality of through holes are provided on the reinforcing plates.
6. A microwave heat conversion material carrier according to claim 4, wherein the longitudinal section of the support is in the shape of an inverted U.
7. A microwave heat conversion material carrier according to any of claims 4 to 6, characterized in that the thickness of the microwave heat conversion material is 2 mm.
8. A preparation method of a microwave heat conversion material is characterized in that graphite powder, ferrite powder, glass fiber and a binder in the claim 1 are taken according to a certain proportion, the mixture is melted and stirred uniformly, the mixture is sintered at a high temperature to form semi-liquid, the semi-liquid is subjected to multistage rolling forming by a rolling device, and the temperature is reduced to form a flexible plate-shaped object, so that the microwave heat conversion material is obtained.
9. The method of claim 8, wherein the high-temperature firing temperature is 1200-1350 ℃.
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| CN201910381297.3A CN110049666B (en) | 2019-05-08 | 2019-05-08 | Microwave thermal conversion material, carrier and preparation method thereof |
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| CN110049666B true CN110049666B (en) | 2021-06-01 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105002352A (en) * | 2013-12-09 | 2015-10-28 | 安徽工业大学 | Preparation method of high-performance pellet binding agent |
| CN108793991A (en) * | 2018-07-11 | 2018-11-13 | 横店集团东磁股份有限公司 | A kind of MnZn ferrites antifreeze plate and its preparation method and application |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2888314Y (en) * | 2006-03-23 | 2007-04-11 | 成都骏元科技发展有限责任公司 | Humidity-keeping steaming device for microwave oven |
| CN104202446A (en) * | 2014-08-11 | 2014-12-10 | 太仓欧锐智能化工程有限公司 | Colorful mobile phone shell with wave-adsorbing radiating function and processing method of mobile phone shell |
| CN105502951A (en) * | 2016-01-09 | 2016-04-20 | 北京工业大学 | Porous glass ceramic capable of absorbing electromagnetic waves and preparation method thereof |
| CN108274829A (en) * | 2017-11-29 | 2018-07-13 | 浙江三元电子科技有限公司 | A kind of light-weighted shielding wallboard of shelter and preparation method thereof with radar invisible function |
| CN107946763B (en) * | 2017-12-26 | 2020-07-03 | 航天科工武汉磁电有限责任公司 | Wave-absorbing and wave-transmitting integrated metamaterial antenna housing and application thereof |
| CN108300531B (en) * | 2018-02-07 | 2020-05-19 | 福建工程学院 | Composite briquette adhesive and preparation method thereof |
| CN108249813A (en) * | 2018-03-30 | 2018-07-06 | 安徽博硕科技有限公司 | A kind of production method of high stick for building |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105002352A (en) * | 2013-12-09 | 2015-10-28 | 安徽工业大学 | Preparation method of high-performance pellet binding agent |
| CN108793991A (en) * | 2018-07-11 | 2018-11-13 | 横店集团东磁股份有限公司 | A kind of MnZn ferrites antifreeze plate and its preparation method and application |
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