CN108793934B - Novel superconducting wave-absorbing composite material and preparation method thereof - Google Patents
Novel superconducting wave-absorbing composite material and preparation method thereof Download PDFInfo
- Publication number
- CN108793934B CN108793934B CN201810961460.9A CN201810961460A CN108793934B CN 108793934 B CN108793934 B CN 108793934B CN 201810961460 A CN201810961460 A CN 201810961460A CN 108793934 B CN108793934 B CN 108793934B
- Authority
- CN
- China
- Prior art keywords
- sodium silicate
- solvent
- composite material
- wave
- absorbing composite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- 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
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00258—Electromagnetic wave absorbing or shielding materials
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00525—Coating or impregnation materials for metallic surfaces
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/76—Use at unusual temperatures, e.g. sub-zero
- C04B2111/763—High temperatures
Abstract
The invention discloses a novel superconducting wave-absorbing composite material and a preparation method thereof, wherein the material takes sodium silicate as a base material and is prepared by mixing the following raw materials in percentage by mass: 27% -32% of sodium silicate solvent, 8-12% of ferrite powder, 28-31% of silicon carbide, 9-11% of nickel oxide and the balance of deionized water. The material is prepared by uniformly stirring ferrite powder and silicon crystal powder, adding the mixture into a sodium silicate solvent, and uniformly stirring and mixing the mixture again. The material takes ferrite with better electromagnetic performance and load material silicon carbide as wave absorbing agent, and zirconium oxide forms a composite ceramic coating, and has the advantage of high temperature resistance up to 1700 ℃, and the material is sintered into a ceramic film at the high temperature of 1200 ℃.
Description
Technical Field
The invention relates to the field of wave-absorbing functional materials, in particular to a novel superconducting wave-absorbing composite material and a preparation method thereof.
Background
With the development of scientific technology and electronic industry, more and more electromagnetic wave radiation exists around us, and researches show that excessive electromagnetic wave radiation can cause obstacles to the nervous system, the immune system, the reproductive system, the blood circulation system and the like, and even possibly induce serious diseases including various cancers. When the human body is in an electromagnetic wave environment for a long time, the damage of tissues and organs which are damaged by the electromagnetic waves and have no time to repair the human body can be accumulated for a long time to become functional lesion, and the life can be threatened when the damage is serious.
At present, many wave-absorbing materials have the defects of high temperature difference resistance and low performance, and the application range is limited to a certain extent, so that the urgent need is to search for a coating wave-absorbing material which can better overcome the defect of high temperature resistance of an organic adhesive and can meet various complex structures.
Disclosure of Invention
The invention aims to provide a novel superconducting wave-absorbing composite material for military equipment or civil facilities and a preparation method thereof, so that the prepared material has the characteristics of high microwave absorption function and microwave frequency band penetration prevention in a set microwave frequency band.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a novel superconducting wave-absorbing composite material, which takes sodium silicate as a base material and is prepared by mixing the following raw materials in percentage by mass: 27% -32% of sodium silicate solvent, 8-12% of ferrite powder, 28-31% of silicon carbide, 9-11% of nickel oxide and the balance of deionized water.
The material is preferably prepared by mixing the following raw materials in percentage by mass: 30% of sodium silicate solvent, 10% of ferrite powder, 30% of silicon carbide, 10% of nickel oxide and 20% of deionized water.
As the optimization of the invention to the scheme, the sodium silicate solvent is a sodium silicate solvent which is prepared by adding deionized water into neutral sodium silicate to dilute to 60% of concentration and then adjusting the pH value to 3.5-4.
The invention also provides a preparation method of the novel superconducting wave-absorbing composite material, which comprises the following specific steps:
(1) adding deionized water into neutral sodium silicate to dilute to 60% concentration, and adjusting pH value to 3.5-4 to obtain sodium silicate solvent;
(2) and (2) stirring the ferrite powder, the nickel oxide and the silicon carbide powder at a high speed for 1h, adding the sodium silicate solvent prepared in the step (1), and mixing and stirring again until the mixture is uniform to prepare the high-temperature-resistant wave-absorbing coating.
In the present invention, it is preferable that the ferrite powder, the nickel oxide and the silicon carbide in the step (2) are uniformly stirred by a paint mixer.
The invention has the beneficial effects that: the novel superconducting wave-absorbing composite material takes high-conductivity inorganic sodium silicate as an adhesive, ferrite with better electromagnetic property, a load material of silicon carbide as a wave-absorbing agent and nickel oxide are compounded to form a wave-absorbing coating, and the material is coated on the surface of a metal and then naturally forms a porcelain-like film covering on the surface of the metal at a high temperature of 200 ℃, so that the surface of the metal can be protected, the novel superconducting wave-absorbing composite material has the characteristics of isolating oxygen to protect the metal from rusting and oxidation, resisting weak acid and alkali, resisting high temperature and airflow scouring, resisting the high temperature of 1700 ℃ at most, has the effect of absorbing microwaves, can effectively block the penetration of the microwaves and can quickly conduct heat, in addition, the construction process is simple and easy to operate, can be used on the surfaces of various variable foreign objects, and is composed of inorganic materials, no toxicity and no environmental pollution; the ferrite and the silicon carbide crystal with excellent wave absorbing performance are adopted, the wave absorbing agent content is high, the reflectivity is lower than-5 DB, and the peak value can reach-35 DB.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
A novel superconducting wave-absorbing composite material is prepared by mixing the following raw materials in percentage by mass, and takes sodium silicate as a base material: 30% of sodium silicate solvent, 10% of ferrite powder, 30% of silicon carbide, 10% of nickel oxide and 20% of deionized water.
In the example, the sodium silicate solvent is sodium silicate solvent which is prepared by adding deionized water to dilute to 60% concentration and adjusting the pH value to 3.5-4.
The preparation method of the novel superconducting wave-absorbing composite material comprises the following specific steps:
(1) adding deionized water into neutral sodium silicate to dilute to 60% concentration, and adjusting pH value to 3.5-4 to obtain sodium silicate solvent;
(2) and (2) stirring the ferrite powder, the nickel oxide and the silicon carbide powder at a high speed for 1h, adding the sodium silicate solvent prepared in the step (1), and mixing and stirring again until the mixture is uniform to prepare the high-temperature-resistant wave-absorbing coating.
Example two
A novel superconducting wave-absorbing composite material is prepared by mixing the following raw materials in percentage by mass, and takes sodium silicate as a base material: 27% of sodium silicate solvent, 8% of ferrite powder, 28% of silicon carbide, 9% of nickel oxide and the balance of deionized water.
In the example, the sodium silicate solvent is sodium silicate solvent which is prepared by adding deionized water to dilute to 60% concentration and adjusting the pH value to 3.5-4.
The preparation method of the novel superconducting wave-absorbing composite material comprises the following specific steps:
(1) adding deionized water into neutral sodium silicate to dilute to 60% concentration, and adjusting pH value to 3.5-4 to obtain sodium silicate solvent;
(2) and (2) stirring the ferrite powder, the nickel oxide and the silicon carbide powder at a high speed for 1h, adding the sodium silicate solvent prepared in the step (1), and mixing and stirring again until the mixture is uniform to prepare the high-temperature-resistant wave-absorbing coating.
In this example, the ferrite powder, nickel oxide and silicon carbide in the step (2) are stirred uniformly by using a paint stirrer.
EXAMPLE III
A novel superconducting wave-absorbing composite material is prepared by mixing the following raw materials in percentage by mass, and takes sodium silicate as a base material: 32% of sodium silicate solvent, 12% of ferrite powder, 31% of silicon carbide, 11% of nickel oxide and the balance of deionized water.
In the example, the sodium silicate solvent is sodium silicate solvent which is prepared by adding deionized water to dilute to 60% concentration and adjusting the pH value to 3.5-4.
The preparation method of the novel superconducting wave-absorbing composite material comprises the following specific steps:
(1) adding deionized water into neutral sodium silicate to dilute to 60% concentration, and adjusting pH value to 3.5-4 to obtain sodium silicate solvent;
(2) and (2) stirring the ferrite powder, the nickel oxide and the silicon carbide powder at a high speed for 1h, adding the sodium silicate solvent prepared in the step (1), and mixing and stirring again until the mixture is uniform to prepare the high-temperature-resistant wave-absorbing coating.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (5)
1. A novel superconducting wave-absorbing composite material is characterized in that the material takes sodium silicate as a base material and is prepared by mixing the following raw materials in percentage by mass: 27-32% of sodium silicate solvent, 8-12% of ferrite powder, 28-31% of silicon carbide, 9-11% of nickel oxide and the balance of deionized water.
2. The novel superconducting wave-absorbing composite material according to claim 1, which is prepared by mixing the following raw materials in percentage by mass: 30% of sodium silicate solvent, 10% of ferrite powder, 30% of silicon carbide, 10% of nickel oxide and 20% of deionized water.
3. A superconducting wave-absorbing composite new material according to claim 1, wherein the natron solvent is a natron solvent in which neutral natron is diluted to 60% by adding deionized water and the pH is adjusted to 3.5-4.
4. The preparation method of the novel superconducting wave-absorbing composite material according to claim 2, which comprises the following steps:
(1) adding deionized water into neutral sodium silicate to dilute to 60% concentration, and adjusting pH value to 3.5-4 to obtain sodium silicate solvent;
(2) and (2) stirring the ferrite powder, the nickel oxide and the silicon carbide at a high speed for 1h according to the proportion, adding the sodium silicate solvent prepared in the step (1), and mixing and stirring the mixture again until the mixture is uniform to prepare the novel superconducting wave-absorbing composite material.
5. The method for preparing a novel superconducting wave-absorbing composite material according to claim 4, wherein the ferrite powder, the nickel oxide and the silicon carbide in the step (2) are uniformly stirred by using a paint stirrer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810961460.9A CN108793934B (en) | 2018-08-22 | 2018-08-22 | Novel superconducting wave-absorbing composite material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810961460.9A CN108793934B (en) | 2018-08-22 | 2018-08-22 | Novel superconducting wave-absorbing composite material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108793934A CN108793934A (en) | 2018-11-13 |
| CN108793934B true CN108793934B (en) | 2021-07-16 |
Family
ID=64080631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810961460.9A Active CN108793934B (en) | 2018-08-22 | 2018-08-22 | Novel superconducting wave-absorbing composite material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108793934B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113471651A (en) * | 2021-05-17 | 2021-10-01 | 北京无线电测量研究所 | Corrugated waveguide filter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103275529A (en) * | 2013-05-23 | 2013-09-04 | 浙江原邦材料科技有限公司 | 0.6-18GHz-frequency-band wave-absorbing powder/inorganic silicate anti-electromagnetic interference coating material and preparation method thereof |
-
2018
- 2018-08-22 CN CN201810961460.9A patent/CN108793934B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103275529A (en) * | 2013-05-23 | 2013-09-04 | 浙江原邦材料科技有限公司 | 0.6-18GHz-frequency-band wave-absorbing powder/inorganic silicate anti-electromagnetic interference coating material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108793934A (en) | 2018-11-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107399735B (en) | Preparation method and application of graphene composite aerogel wave-absorbing material | |
| CN103409669B (en) | MnAl alloy electromagnetic wave absorbing material and preparation method thereof | |
| CN103275591B (en) | Suction ripple powder/epoxy electromagnetism interference coated material of a kind of 0.6-18GHz frequency range and preparation method thereof | |
| JP2019131456A (en) | Polypyrrole film-coated graphene oxide cement-based composite material and preparation method thereof | |
| CN108947376A (en) | A kind of cement mortar and preparation method thereof | |
| CN103467028A (en) | Thermal-insulation mortar | |
| CN107954662B (en) | Self-repairing electromagnetic protection cement mortar | |
| CN103275529B (en) | Suction ripple powder/inorganic silicate electromagnetism interference coated material of a kind of 0.6-18GHz frequency range and preparation method thereof | |
| CN108793934B (en) | Novel superconducting wave-absorbing composite material and preparation method thereof | |
| CN110423506A (en) | One kind can low-temperature fast-curing Radar Absorbing Coating and preparation method thereof | |
| CN107418510A (en) | A kind of preparation method of galapectite base soft magnetic ferrite absorbing material | |
| CN104376942A (en) | Prndfeb magnetic wave absorbing material and preparation method thereof | |
| CN109370381B (en) | Wave-absorbing coating based on soft magnetic ferrite reclaimed material and preparation method thereof | |
| CN112812612B (en) | Building wave-absorbing coating based on magnesium oxide excited steel slag and preparation method thereof | |
| JPH03238895A (en) | Microwave-absorbing blank | |
| WO2020114092A1 (en) | Epoxy rubber radiation-absorbing coating and preparation method therefor | |
| CN106498710A (en) | There is fiber of electromaganic wave absorbing property and preparation method thereof | |
| CN111138184A (en) | Carbon composite cerium-doped manganese-zinc ferrite wave-absorbing material and preparation method thereof | |
| CN105448445A (en) | NdFeB magnetic wave-absorbing material and preparation method thereof | |
| CN110305316A (en) | A kind of toroidal preparation method of polyaniline nano with absorbing property | |
| CN104402417B (en) | Rare earth ReCrO3electromagnetic wave absorbing material and preparation method thereof | |
| CN106433120B (en) | A kind of preparation method of the compound anti-electromagnetic radiation material of polyaniline/coal liquifaction residue and its product of preparation | |
| CN108503869A (en) | The preparation method of low-frequency electromagnetic wave absorbing material | |
| CN109734448B (en) | Preparation method of carbon aerogel-based electromagnetic shielding material | |
| CN112077298B (en) | ErFe @ GO composite microwave absorbent and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210624 Address after: No.17, guangmen Road, Guang'an District, Guang'an City, Sichuan Province Applicant after: Yan Xin Address before: 611130 No. 981, 983, Tianhe Road, Hesheng Town, Wenjiang District, Chengdu City, Sichuan Province Applicant before: SICHUAN YANGRUN KEYU TECHNOLOGY Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |