CN115947601A - Ceramic wave-absorbing material and preparation method thereof - Google Patents
Ceramic wave-absorbing material and preparation method thereof Download PDFInfo
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- CN115947601A CN115947601A CN202211644037.9A CN202211644037A CN115947601A CN 115947601 A CN115947601 A CN 115947601A CN 202211644037 A CN202211644037 A CN 202211644037A CN 115947601 A CN115947601 A CN 115947601A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 32
- 239000011358 absorbing material Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 47
- 239000000843 powder Substances 0.000 claims abstract description 46
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000011230 binding agent Substances 0.000 claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000010439 graphite Substances 0.000 claims abstract description 16
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 16
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 16
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 14
- 239000000956 alloy Substances 0.000 claims abstract description 14
- 239000007822 coupling agent Substances 0.000 claims abstract description 11
- 239000002270 dispersing agent Substances 0.000 claims abstract description 11
- 239000003381 stabilizer Substances 0.000 claims abstract description 11
- 239000000725 suspension Substances 0.000 claims abstract description 11
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 20
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 20
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 10
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 10
- 239000010453 quartz Substances 0.000 claims description 10
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 10
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 10
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 238000001723 curing Methods 0.000 description 6
- 238000013007 heat curing Methods 0.000 description 6
- 239000000758 substrate Substances 0.000 description 2
- 229910000601 superalloy Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Abstract
The invention discloses a ceramic wave-absorbing material and a preparation method thereof, wherein the ceramic wave-absorbing material comprises the following components in parts by weight: 30-50 parts of base material, 10-20 parts of temperature-resistant material, 10-20 parts of binder, 3-5 parts of dispersant, 3-5 parts of suspension stabilizer and 3-5 parts of coupling agent; in order to prevent the problem that the wave absorption performance of the material is affected due to the increase of the temperature of the surrounding environment when the material is used at the later stage, the temperature-resistant material is added in the preparation process, the temperature-resistant material is formed by combining nickel-based high-temperature alloy powder and nano graphite, the graphite and the nickel-based alloy powder are fully mixed with the base material through the preparation method, and the mixed material is heated and shaped, so that the problem that the wave absorption performance is affected due to the fact that the existing material cannot bear high temperature when the whole material faces a high-temperature environment is solved.
Description
Technical Field
The invention belongs to the field of ceramic wave-absorbing materials, and particularly relates to a ceramic wave-absorbing material and a preparation method thereof.
Background
In daily environments, electromagnetic wave radiation increasingly affects the environment, for example, when equipment such as electronic instruments and the like is used, the equipment cannot be normally used under the interference of electromagnetic waves, and in order to reduce the influence of the electromagnetic waves on the equipment, a wave-absorbing material is adopted to reduce the interference caused by the electromagnetic waves, wherein the wave-absorbing material refers to a material which can absorb or greatly weaken the electromagnetic wave energy received by the surface of the material, so that the interference of the electromagnetic waves is reduced. In engineering application, the wave-absorbing material is required to have high absorption rate to electromagnetic waves in a wider frequency band; however, when the existing wave-absorbing material is used in some high-temperature environments, the absorption performance of the wave-absorbing material is reduced due to the temperature rise of the surrounding environment, and then electronic instrument equipment used by surrounding personnel can be influenced.
Disclosure of Invention
The invention aims to provide a ceramic wave-absorbing material and a preparation method thereof, which are used for solving the problems in the background art and solving the problem that the wave-absorbing performance of the existing wave-absorbing material is reduced when the wave-absorbing material is subjected to high temperature.
In order to achieve the purpose, the invention provides the following technical scheme:
a ceramic wave-absorbing material is composed of the following components in parts by weight: 30-50 parts of base material, 10-20 parts of temperature-resistant material, 10-20 parts of binder, 3-5 parts of dispersant, 3-5 parts of suspension stabilizer and 3-5 parts of coupling agent.
Preferably, the base material consists of the following components in parts by weight: 15-25 parts of silicon carbide micro powder, 3-5 parts of quartz powder, 3-5 parts of calcium carbonate, 3-5 parts of sodium carbonate, 3-5 parts of talcum powder and 3-5 parts of electromagnetic shielding powder;
the adhesive comprises the following components in parts by weight: 5-10 parts of silica sol and 5-10 parts of ceramic binder;
the temperature-resistant material comprises the following components in parts by weight: 5-10 parts of nickel-based high-temperature alloy powder and 5-10 parts of nano graphite
A preparation method of a ceramic wave-absorbing material specifically comprises the following operation steps:
s1: firstly, 15-25 parts of silicon carbide micro powder, 3-5 parts of quartz powder, 3-5 parts of calcium carbonate, 3-5 parts of sodium carbonate, 3-5 parts of talcum powder and 3-5 parts of electromagnetic shielding powder are mixed in sequence
S2: then, sequentially adding 5-10 parts of silica sol and 5-10 parts of ceramic binder in the mixing process, adding 3-5 parts of dispersing agent, 3-5 parts of suspension stabilizer and 3-5 parts of coupling agent after adding 10-20 parts of binder, and continuously stirring;
s3: then standing for 30-60 min, adding 5-10 parts of nickel-based high-temperature alloy powder and 5-10 parts of nano graphite after standing is finished, continuously stirring, finally heating the mixed material, and curing and molding according to a mold.
Preferably, the stirring speed in the step 2 is 500-1600 rpm, and the stirring time in the step 2 is 20-40 min.
Preferably, the heating curing temperature in the step 3 is 190-300 ℃, and the heating curing time in the step 3 is 10-30 min.
The invention has the technical effects and advantages that:
in order to prevent this application from increasing because of all ring edge border ambient temperature when using in the later stage, thereby lead to the problem that this application material wave absorption nature received the influence to appear, utilize this application to add in the preparation has the temperature resistant material, and be nickel base superalloy powder through the temperature resistant material, the nanometer graphite combination forms, utilize graphite and nickel base alloy powder through preparation method and substrate intensive mixing, and will accomplish the material of mixing and heat the design, make this application whole can not lead to absorbing the problem appearance that wave-absorbing performance received the influence because of current material can not bear the high temperature when facing high temperature environment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, 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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1
A ceramic wave-absorbing material comprises the following components in parts by weight: 40 parts of base material, 15 parts of temperature-resistant material, 15 parts of binder, 4 parts of dispersing agent, 4 parts of suspension stabilizer and 4 parts of coupling agent.
Preferably, the base material consists of the following components in parts by weight: 20 parts of silicon carbide micro powder, 4 parts of quartz powder, 4 parts of calcium carbonate, 4 parts of sodium carbonate, 4 parts of talcum powder and 4 parts of electromagnetic shielding powder;
the binder consists of the following components in parts by weight: 7 parts of silica sol and 7 parts of ceramic binder;
the temperature-resistant material comprises the following components in parts by weight: 7 parts of nickel-based high-temperature alloy powder and 7 parts of nano graphite
A preparation method of a ceramic wave-absorbing material specifically comprises the following operation steps:
s1: firstly, 20 parts of silicon carbide micro powder, 4 parts of quartz powder, 4 parts of calcium carbonate, 4 parts of sodium carbonate, 4 parts of talcum powder and 4 parts of electromagnetic shielding powder are mixed in sequence
S2: then, sequentially adding 7 parts of silica sol and 7 parts of ceramic binder in the mixing process, adding 15 parts of binder, simultaneously adding 4 parts of dispersing agent, 4 parts of suspension stabilizer and 4 parts of coupling agent, and continuously stirring;
s3: then standing for 40min, adding 7 parts of nickel-based high-temperature alloy powder and 7 parts of nano graphite after standing is finished, continuously stirring, finally heating the mixed material, and curing and molding according to a mold.
Preferably, the stirring speed in step 2 is 1000 rpm, and the stirring time in step 2 is 30min.
Preferably, the heat curing temperature in step 3 is 1230 ℃ and the heat curing time in step 3 is 20min.
Example 2
A ceramic wave-absorbing material is composed of the following components in parts by weight: 50 parts of base material, 20 parts of temperature-resistant material, 20 parts of binder, 5 parts of dispersant, 5 parts of suspension stabilizer and 5 parts of coupling agent.
Preferably, the base material consists of the following components in parts by weight: 125 parts of silicon carbide micro powder, 5 parts of quartz powder, 5 parts of calcium carbonate, 5 parts of sodium carbonate, 5 parts of talcum powder and 5 parts of electromagnetic shielding powder;
the binder consists of the following components in parts by weight: 10 parts of silica sol and 10 parts of ceramic binder;
the temperature-resistant material comprises the following components in parts by weight: 10 parts of nickel-based high-temperature alloy powder and 10 parts of nano graphite
A preparation method of a ceramic wave-absorbing material specifically comprises the following operation steps:
s1: firstly, 25 parts of silicon carbide micro powder, 5 parts of quartz powder, 5 parts of calcium carbonate, 5 parts of sodium carbonate, 5 parts of talcum powder and 5 parts of electromagnetic shielding powder are mixed in sequence
S2: then sequentially adding 10 parts of silica sol and 10 parts of ceramic binder in the mixing process, adding 5 parts of dispersing agent, 5 parts of suspension stabilizer and 5 parts of coupling agent after adding 20 parts of binder, and continuously stirring;
s3: then standing for 60min, adding 10 parts of nickel-based high-temperature alloy powder and 10 parts of nano graphite after standing is finished, continuously stirring, finally heating the mixed material, and curing and molding according to a mold.
Preferably, the stirring speed in step 2 is 1600 rpm, and the stirring time in step 2 is 40min.
Preferably, the heat curing temperature in step 3 is 300 ℃ and the heat curing time in step 3 is 30min.
Example 3
A ceramic wave-absorbing material is composed of the following components in parts by weight: 30 parts of base material, 10 parts of temperature-resistant material, 10 parts of binder, 3 parts of dispersant, 3 parts of suspension stabilizer and 3 parts of coupling agent.
Preferably, the base material consists of the following components in parts by weight: 15 parts of silicon carbide micro powder, 3 parts of quartz powder, 3 parts of calcium carbonate, 3 parts of sodium carbonate, 3 parts of talcum powder and 3 parts of electromagnetic shielding powder;
the binder consists of the following components in parts by weight: 5 parts of silica sol and 5 parts of ceramic binder;
the temperature-resistant material comprises the following components in parts by weight: 5 parts of nickel-based high-temperature alloy powder and 5 parts of nano graphite
A preparation method of a ceramic wave-absorbing material specifically comprises the following operation steps:
s1: firstly, 15 parts of silicon carbide micro powder, 3 parts of quartz powder, 3 parts of calcium carbonate, 3 parts of sodium carbonate, 3 parts of talcum powder and 3 parts of electromagnetic shielding powder are mixed in sequence
S2: then, sequentially adding 5 parts of silica sol and 5 parts of ceramic binder in the mixing process, adding 10 parts of binder, simultaneously adding 3 parts of dispersing agent, 3 parts of suspension stabilizer and 3 parts of coupling agent, and continuously stirring;
s3: then standing for 30min, adding 5 parts of nickel-based high-temperature alloy powder and 5 parts of nano graphite after standing is finished, continuously stirring, finally heating the mixed material, and curing and molding according to a mold.
Preferably, the stirring speed in step 2 is 500 rpm, and the stirring time in step 2 is 20min.
Preferably, the heat curing temperature in step 3 is 190 ℃ and the heat curing time in step 3 is 10min.
In order to prevent this application from increasing because of all ring edge border ambient temperature when using in the later stage, thereby lead to the problem that this application material wave absorption nature received the influence to appear, utilize this application to add in the preparation has the temperature resistant material, and be nickel base superalloy powder through the temperature resistant material, the nanometer graphite combination forms, utilize graphite and nickel base alloy powder through preparation method and substrate intensive mixing, and will accomplish the material of mixing and heat the design, make this application whole can not lead to absorbing the problem appearance that wave-absorbing performance received the influence because of current material can not bear the high temperature when facing high temperature environment.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and that various other modifications and changes can be made on the basis of the above description by those skilled in the art.
Claims (5)
1. The ceramic wave-absorbing material is characterized by comprising the following components in parts by weight: 30-50 parts of base material, 10-20 parts of temperature-resistant material, 10-20 parts of binder, 3-5 parts of dispersant, 3-5 parts of suspension stabilizer and 3-5 parts of coupling agent.
2. The ceramic wave-absorbing material of claim 2, wherein: the base material comprises the following components in parts by weight: 15-25 parts of silicon carbide micro powder, 3-5 parts of quartz powder, 3-5 parts of calcium carbonate, 3-5 parts of sodium carbonate, 3-5 parts of talcum powder and 3-5 parts of electromagnetic shielding powder;
the adhesive comprises the following components in parts by weight: 5-10 parts of silica sol and 5-10 parts of ceramic binder;
the temperature-resistant material comprises the following components in parts by weight: 5-10 parts of nickel-based high-temperature alloy powder and 5-10 parts of nano graphite.
3. A preparation method of a ceramic wave-absorbing material is characterized by comprising the following steps: the method specifically comprises the following operation steps:
s1: firstly, 15-25 parts of silicon carbide micro powder, 3-5 parts of quartz powder, 3-5 parts of calcium carbonate, 3-5 parts of sodium carbonate, 3-5 parts of talcum powder and 3-5 parts of electromagnetic shielding powder are mixed in sequence
S2: then, sequentially adding 5-10 parts of silica sol and 5-10 parts of ceramic binder in the mixing process, adding 3-5 parts of dispersing agent, 3-5 parts of suspension stabilizer and 3-5 parts of coupling agent after adding 10-20 parts of binder, and continuously stirring;
s3: then standing for 30-60 min, adding 5-10 parts of nickel-based high-temperature alloy powder and 5-10 parts of nano graphite after standing is finished, continuously stirring, finally heating the mixed material, and curing and molding according to a mold.
4. The preparation method of the ceramic wave-absorbing material according to claim 3, wherein the ceramic wave-absorbing material comprises the following steps: the stirring speed in the step 2 is 500-1600 rpm, and the stirring time in the step 2 is 20-40 min.
5. The preparation method of the ceramic wave-absorbing material according to claim 3, wherein the ceramic wave-absorbing material comprises the following steps: the heating curing temperature in the step 3 is 190-300 ℃, and the heating curing time in the step 3 is 10-30 min.
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Application publication date: 20230411 |