CN111748161A - Foamed polystyrene wave-absorbing material and preparation method thereof - Google Patents
Foamed polystyrene wave-absorbing material and preparation method thereof Download PDFInfo
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- CN111748161A CN111748161A CN202010703238.6A CN202010703238A CN111748161A CN 111748161 A CN111748161 A CN 111748161A CN 202010703238 A CN202010703238 A CN 202010703238A CN 111748161 A CN111748161 A CN 111748161A
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- 239000011358 absorbing material Substances 0.000 title claims abstract description 35
- 229920006248 expandable polystyrene Polymers 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 69
- 239000002245 particle Substances 0.000 claims abstract description 50
- 239000000853 adhesive Substances 0.000 claims abstract description 27
- 230000001070 adhesive effect Effects 0.000 claims abstract description 27
- 238000005187 foaming Methods 0.000 claims abstract description 20
- 239000004793 Polystyrene Substances 0.000 claims abstract description 19
- 229920002223 polystyrene Polymers 0.000 claims abstract description 19
- 239000007822 coupling agent Substances 0.000 claims abstract description 15
- 239000002270 dispersing agent Substances 0.000 claims abstract description 15
- 239000004088 foaming agent Substances 0.000 claims abstract description 15
- 239000003381 stabilizer Substances 0.000 claims abstract description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 239000003292 glue Substances 0.000 claims description 25
- 238000003756 stirring Methods 0.000 claims description 20
- 239000000725 suspension Substances 0.000 claims description 15
- 238000005303 weighing Methods 0.000 claims description 15
- 239000004794 expanded polystyrene Substances 0.000 claims description 11
- 229920001721 polyimide Polymers 0.000 claims description 11
- 239000009719 polyimide resin Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- 238000002791 soaking Methods 0.000 claims description 10
- 239000004156 Azodicarbonamide Substances 0.000 claims description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical group NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 claims description 8
- 235000019399 azodicarbonamide Nutrition 0.000 claims description 8
- 229920000609 methyl cellulose Polymers 0.000 claims description 8
- 239000001923 methylcellulose Substances 0.000 claims description 8
- 235000010981 methylcellulose Nutrition 0.000 claims description 8
- 229920002545 silicone oil Polymers 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000000706 filtrate Substances 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000009775 high-speed stirring Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 230000010355 oscillation Effects 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims description 5
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 2
- 229910052796 boron Inorganic materials 0.000 claims description 2
- 239000005011 phenolic resin Substances 0.000 claims description 2
- 229920001568 phenolic resin Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- 230000002745 absorbent Effects 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
- C08J9/40—Impregnation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
- C08J9/40—Impregnation
- C08J9/42—Impregnation with macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2325/02—Homopolymers or copolymers of hydrocarbons
- C08J2325/04—Homopolymers or copolymers of styrene
- C08J2325/06—Polystyrene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2479/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2461/00 - C08J2477/00
- C08J2479/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08J2479/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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- Polymers & Plastics (AREA)
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Abstract
The invention belongs to the technical field of electromagnetic wave-absorbing materials, and particularly relates to a foamed polystyrene wave-absorbing material which comprises the following raw material components in parts by weight: 70-90 parts of carbonyl iron particles, 6-12 parts of adhesive, 20-30 parts of absolute ethyl alcohol, 4-6 parts of coupling agent, 50-60 parts of polystyrene particles, 1-2 parts of dispersing agent, 0.5-0.6 part of foaming agent and 0.2-0.4 part of foaming stabilizer.
Description
Technical Field
The invention belongs to the technical field of electromagnetic wave-absorbing materials, and particularly relates to a foamed polystyrene wave-absorbing material and a preparation method thereof.
Background
In the field of microwave anechoic chamber or anechoic chamber application, the requirements on the flame retardant property of the wave-absorbing material in the microwave anechoic chamber or anechoic chamber are very high, the manufacturing cost of the anechoic chamber is very expensive, or the tested piece is very expensive.
Carbonyl iron has the advantages of large magnetic loss, large wave-absorbing strength and the like, and is one of the most commonly used magnetic absorbents at present. However, the application range of carbonyl iron is greatly limited due to its high density. Therefore, how to reduce the density of the carbonyl iron wave-absorbing material without reducing the wave-absorbing performance of the material becomes a problem which needs to be researched urgently. The porosity of the matrix material can realize that the wave-absorbing material is converted from single absorption action into wave-transmitting-wave-absorbing action to optimize impedance matching, and can greatly reduce the density of the material, thereby providing possibility for realizing the requirement of light bandwidth.
The expanded polystyrene, also called expandable polystyrene, has the advantages of small relative density, low thermal conductivity, small water absorption, impact vibration resistance, heat insulation, sound insulation, moisture resistance, vibration reduction, excellent dielectric property and the like. From the related technology and literature reports, the research on the wave-absorbing material taking carbonyl iron with expanded polystyrene as a matrix as an absorbent is not reported.
Disclosure of Invention
The invention aims to provide a foamed polystyrene wave-absorbing material, which overcomes the defects of the prior art, carbonyl iron with large magnetic loss, large wave-absorbing strength and large density is used as an absorbent and added into a matrix of foamed polystyrene, so that the density and the quality of the carbonyl iron wave-absorbing material can be effectively reduced, and the wave-absorbing material with excellent overall performance is obtained.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a foamed polystyrene wave-absorbing material comprises the following raw material components in parts by weight: 70-90 parts of carbonyl iron particles, 6-12 parts of adhesive, 20-30 parts of absolute ethyl alcohol, 4-6 parts of coupling agent, 50-60 parts of polystyrene particles, 1-2 parts of dispersing agent, 0.5-0.6 part of foaming agent and 0.2-0.4 part of foaming stabilizer.
Further, the raw material components comprise the following components in parts by weight: 70 parts of carbonyl iron particles, 6 parts of adhesive, 20 parts of absolute ethyl alcohol, 4 parts of coupling agent, 50 parts of polystyrene particles, 1 part of dispersing agent, 0.5 part of foaming agent and 0.2 part of foaming stabilizer.
Further, the raw material components comprise the following components in parts by weight: 80 parts of carbonyl iron particles, 9 parts of adhesive, 25 parts of absolute ethyl alcohol, 5 parts of coupling agent, 55 parts of polystyrene particles, 1.5 parts of dispersing agent, 0.55 part of foaming agent and 0.3 part of foaming stabilizer.
Further, the raw material components comprise the following components in parts by weight: 90 parts of carbonyl iron particles, 12 parts of adhesive, 30 parts of absolute ethyl alcohol, 6 parts of coupling agent, 60 parts of polystyrene particles, 2 parts of dispersing agent, 0.6 part of foaming agent and 0.4 part of foaming stabilizer.
Further, the adhesive is one of polyimide resin and boron phenolic resin, and the coupling agent is titanate.
Further, the dispersing agent is methyl cellulose, the foaming agent is azodicarbonamide, and the foaming stabilizer is silicone oil AK 8807.
A preparation method of the foamed polystyrene based wave-absorbing material comprises the following steps:
(1) weighing carbonyl iron particles, dividing the carbonyl iron particles into two parts, adding one part of the carbonyl iron particles into deionized water, and performing ultrasonic oscillation to obtain a carbonyl iron suspension and the other part of the carbonyl iron particles for later use;
(2) weighing unfoamed polystyrene particles, a dispersing agent, a foaming agent and a foaming stabilizer, adding the unfoamed polystyrene particles, a carbonyl iron suspension and the dispersing agent into a stirring barrel of a high-speed dispersion machine, heating under the condition of high-speed stirring until the temperature is 100 ℃, maintaining the temperature at 100 ℃, and continuing to stir at high speed for 20 min;
(3) adding a foaming agent and a foaming stabilizer into the dispersed mixture, uniformly mixing, pouring into a mold with the mold temperature of 150 ℃, putting into an oven with the temperature of 155 ℃, curing for 2 hours at the temperature of 155 ℃ after foaming, naturally cooling to room temperature, demoulding, putting the obtained foam sample into the oven again, and curing to obtain the foamed polystyrene;
(4) weighing an adhesive and a coupling agent, dissolving the adhesive in absolute ethyl alcohol, fully stirring until the adhesive is dissolved to form a transparent uniform adhesive glue solution, adding the other half of carbonyl iron and the coupling agent into the adhesive glue solution, fully mechanically stirring and ultrasonically treating to obtain a carbonyl iron glue solution;
(5) and (3) soaking the foamed polystyrene in the carbonyl iron glue solution, taking out the filtrate, soaking again, repeating for 3-5 times, discharging the excessive glue solution, and drying in a vacuum drying oven to obtain the foamed polystyrene wave-absorbing material.
Further, the ratio of the mass of the carbonyl iron particles in the carbonyl iron suspension in the step (1) to the volume of the deionized water is 1 g: 50 ml.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, carbonyl iron with large magnetic loss, large wave-absorbing strength and large density is used as an absorbent and added into a matrix of expanded polystyrene, so that the density and the quality of the carbonyl iron wave-absorbing material can be effectively reduced, and the wave-absorbing material with excellent overall performance is obtained; the preparation method is simple and efficient, has good repeatability, and the prepared wave-absorbing material has obvious wave-absorbing effect.
Drawings
Fig. 1 is an SEM image of the expanded polystyrene wave-absorbing material provided in example 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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 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 1
A preparation method of a foamed polystyrene wave-absorbing material comprises the following steps:
(1) weighing 70 parts of carbonyl iron particles, equally dividing into two parts, adding one part of carbonyl iron particles into deionized water, and performing ultrasonic oscillation to obtain carbonyl iron suspension, wherein the mass ratio of the carbonyl iron particles in the carbonyl iron suspension to the volume ratio of the deionized water is 1 g: 50ml, and the other part of carbonyl iron particles is reserved;
(2) weighing 50 parts of unfoamed polystyrene particles, 1 part of methylcellulose, 0.5 part of azodicarbonamide and 88070.2 parts of silicone oil AK, adding the unfoamed polystyrene particles, carbonyl iron suspension and the methylcellulose into a stirring barrel of a high-speed dispersion machine, heating under the condition of high-speed stirring until the temperature is 100 ℃, maintaining the temperature at 100 ℃, and continuing to stir at high speed for 20 min;
(3) adding azodicarbonamide and silicone oil AK8807 into the dispersed mixture, uniformly mixing, pouring into a mold with the mold temperature of 150 ℃ and putting into an oven with the temperature of 155 ℃, curing for 2 hours at the temperature of 155 ℃ after foaming, naturally cooling to room temperature and demoulding, and putting the obtained foam sample into the oven for curing to obtain the foamed polystyrene;
(4) weighing 6 parts of polyimide resin and 5 parts of titanate, dissolving the polyimide resin in 20 parts of absolute ethyl alcohol, fully stirring until the polyimide resin is dissolved to obtain a transparent uniform adhesive glue solution, adding the other half of carbonyl iron and the titanate into the adhesive glue solution, fully mechanically stirring and ultrasonically treating to obtain a carbonyl iron glue solution;
(5) and (3) soaking the foamed polystyrene in the carbonyl iron glue solution, taking out the filtrate, soaking again, repeating for 3-5 times, discharging the excessive glue solution, and drying in a vacuum drying oven to obtain the foamed polystyrene wave-absorbing material.
Example 2
A preparation method of a foamed polystyrene wave-absorbing material comprises the following steps:
(1) weighing 80 parts of carbonyl iron particles, equally dividing into two parts, adding one part of carbonyl iron particles into deionized water, and performing ultrasonic oscillation to obtain carbonyl iron suspension, wherein the mass ratio of the carbonyl iron particles in the carbonyl iron suspension to the volume ratio of the deionized water is 1 g: 50ml, and the other part of carbonyl iron particles is reserved;
(2) weighing 55 parts of unfoamed polystyrene particles, 1.5 parts of methylcellulose, 0.55 part of azodicarbonamide and 88070.3 parts of silicone oil AK, adding the unfoamed polystyrene particles, the carbonyl iron suspension and the methylcellulose into a stirring barrel of a high-speed dispersion machine, heating under the condition of high-speed stirring until the temperature is 100 ℃, maintaining the temperature at 100 ℃, and continuing to stir at high speed for 20 min;
(3) adding azodicarbonamide and silicone oil AK8807 into the dispersed mixture, uniformly mixing, pouring into a mold with the mold temperature of 150 ℃ and putting into an oven with the temperature of 155 ℃, curing for 2 hours at the temperature of 155 ℃ after foaming, naturally cooling to room temperature and demoulding, and putting the obtained foam sample into the oven for curing to obtain the foamed polystyrene;
(4) weighing 9 parts of polyimide resin and 5 parts of titanate, dissolving the polyimide resin in absolute ethyl alcohol, fully stirring until the polyimide resin is dissolved to form a transparent uniform adhesive glue solution, adding the other half of carbonyl iron and the titanate into the adhesive glue solution, fully mechanically stirring and ultrasonically treating to obtain a carbonyl iron glue solution;
(5) and (3) soaking the foamed polystyrene in the carbonyl iron glue solution, taking out the filtrate, soaking again, repeating for 3-5 times, discharging the excessive glue solution, and drying in a vacuum drying oven to obtain the foamed polystyrene wave-absorbing material.
Example 3
A preparation method of a foamed polystyrene wave-absorbing material comprises the following steps:
(1) weighing 90 parts of carbonyl iron particles, equally dividing into two parts, adding one part of carbonyl iron particles into deionized water, and performing ultrasonic oscillation to obtain carbonyl iron suspension, wherein the mass ratio of the carbonyl iron particles in the carbonyl iron suspension to the volume ratio of the deionized water is 1 g: 50ml, and the other part of carbonyl iron particles is reserved;
(2) weighing 60 parts of unfoamed polystyrene particles, 2 parts of methylcellulose, 0.6 part of azodicarbonamide and 88070.4 parts of silicone oil AK, adding the unfoamed polystyrene particles, carbonyl iron suspension and the methylcellulose into a stirring barrel of a high-speed dispersion machine, heating under the condition of high-speed stirring until the temperature is 100 ℃, maintaining the temperature at 100 ℃, and continuing to stir at high speed for 20 min;
(3) adding azodicarbonamide and silicone oil AK8807 into the dispersed mixture, uniformly mixing, pouring into a mold with the mold temperature of 150 ℃ and putting into an oven with the temperature of 155 ℃, curing for 2 hours at the temperature of 155 ℃ after foaming, naturally cooling to room temperature and demoulding, and putting the obtained foam sample into the oven for curing to obtain the foamed polystyrene;
(4) weighing 12 parts of polyimide resin and 6 parts of titanate, dissolving the polyimide resin in absolute ethyl alcohol, fully stirring until the polyimide resin is dissolved to form a transparent uniform adhesive glue solution, adding the other half of carbonyl iron and the titanate into the adhesive glue solution, fully mechanically stirring and ultrasonically treating to obtain a carbonyl iron glue solution;
(5) and (3) soaking the foamed polystyrene in the carbonyl iron glue solution, taking out the filtrate, soaking again, repeating for 3-5 times, discharging the excessive glue solution, and drying in a vacuum drying oven to obtain the foamed polystyrene wave-absorbing material.
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. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. A foamed polystyrene wave-absorbing material is characterized in that: the raw material components of the material comprise the following components in parts by weight: 70-90 parts of carbonyl iron particles, 6-12 parts of adhesive, 20-30 parts of absolute ethyl alcohol, 4-6 parts of coupling agent, 50-60 parts of polystyrene particles, 1-2 parts of dispersing agent, 0.5-0.6 part of foaming agent and 0.2-0.4 part of foaming stabilizer.
2. The expanded polystyrene wave-absorbing material of claim 1, wherein: the raw material components of the material comprise the following components in parts by weight: 70 parts of carbonyl iron particles, 6 parts of adhesive, 20 parts of absolute ethyl alcohol, 4 parts of coupling agent, 50 parts of polystyrene particles, 1 part of dispersing agent, 0.5 part of foaming agent and 0.2 part of foaming stabilizer.
3. The expanded polystyrene wave-absorbing material of claim 1, wherein: the raw material components of the material comprise the following components in parts by weight: 80 parts of carbonyl iron particles, 9 parts of adhesive, 25 parts of absolute ethyl alcohol, 5 parts of coupling agent, 55 parts of polystyrene particles, 1.5 parts of dispersing agent, 0.55 part of foaming agent and 0.3 part of foaming stabilizer.
4. The expanded polystyrene wave-absorbing material of claim 1, wherein: the raw material components of the material comprise the following components in parts by weight: 90 parts of carbonyl iron particles, 12 parts of adhesive, 30 parts of absolute ethyl alcohol, 6 parts of coupling agent, 60 parts of polystyrene particles, 2 parts of dispersing agent, 0.6 part of foaming agent and 0.4 part of foaming stabilizer.
5. The expanded polystyrene wave-absorbing material of claim 1, wherein: the adhesive is one of polyimide resin and boron phenolic resin, and the coupling agent is titanate.
6. The expanded polystyrene wave-absorbing material of claim 1, wherein: the dispersing agent is methyl cellulose, the foaming agent is azodicarbonamide, and the foaming stabilizer is silicone oil AK 8807.
7. The preparation method of the expanded polystyrene wave-absorbing material according to any one of claims 1 to 6, wherein the method comprises the following steps: the method comprises the following steps:
(1) weighing carbonyl iron particles, dividing the carbonyl iron particles into two parts, adding one part of the carbonyl iron particles into deionized water, and performing ultrasonic oscillation to obtain a carbonyl iron suspension and the other part of the carbonyl iron particles for later use;
(2) weighing unfoamed polystyrene particles, a dispersing agent, a foaming agent and a foaming stabilizer, adding the unfoamed polystyrene particles, a carbonyl iron suspension and the dispersing agent into a stirring barrel of a high-speed dispersion machine, heating under the condition of high-speed stirring until the temperature is 100 ℃, maintaining the temperature at 100 ℃, and continuing to stir at high speed for 20 min;
(3) adding a foaming agent and a foaming stabilizer into the dispersed mixture, uniformly mixing, pouring into a mold with the mold temperature of 150 ℃, putting into an oven with the temperature of 155 ℃, curing for 2 hours at the temperature of 155 ℃ after foaming, naturally cooling to room temperature, demoulding, putting the obtained foam sample into the oven again, and curing to obtain the foamed polystyrene;
(4) weighing an adhesive and a coupling agent, dissolving the adhesive in absolute ethyl alcohol, fully stirring until the adhesive is dissolved to form a transparent uniform adhesive glue solution, adding the other half of carbonyl iron and the coupling agent into the adhesive glue solution, fully mechanically stirring and ultrasonically treating to obtain a carbonyl iron glue solution;
(5) and (3) soaking the foamed polystyrene in the carbonyl iron glue solution, taking out the filtrate, soaking again, repeating for 3-5 times, discharging the excessive glue solution, and drying in a vacuum drying oven to obtain the foamed polystyrene wave-absorbing material.
8. The preparation method of the expanded polystyrene wave-absorbing material according to claim 7, wherein the preparation method comprises the following steps: the volume ratio of the mass of the carbonyl iron particles in the carbonyl iron suspension in the step (1) to the deionized water is 1 g: 50 ml.
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| CN113717689A (en) * | 2021-09-17 | 2021-11-30 | 和爱电磁兼容科技(安徽)有限公司 | High-stability multilayer composite wave-absorbing material and preparation method thereof |
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| WO2008148642A1 (en) * | 2007-06-04 | 2008-12-11 | Basf Se | Method for metal coating thermoplastic particles |
| CN102615883A (en) * | 2012-03-08 | 2012-08-01 | 湖北三江航天江北机械工程有限公司 | 150 DEG C resistant foam interlayer wave-absorbing composite material and preparation method thereof |
| CN104530685A (en) * | 2015-01-06 | 2015-04-22 | 中国人民解放军第二炮兵工程大学 | Method for manufacturing carbonyl iron foam wave-absorbing material |
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| WO2008148642A1 (en) * | 2007-06-04 | 2008-12-11 | Basf Se | Method for metal coating thermoplastic particles |
| CN102615883A (en) * | 2012-03-08 | 2012-08-01 | 湖北三江航天江北机械工程有限公司 | 150 DEG C resistant foam interlayer wave-absorbing composite material and preparation method thereof |
| CN104530685A (en) * | 2015-01-06 | 2015-04-22 | 中国人民解放军第二炮兵工程大学 | Method for manufacturing carbonyl iron foam wave-absorbing material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113717689A (en) * | 2021-09-17 | 2021-11-30 | 和爱电磁兼容科技(安徽)有限公司 | High-stability multilayer composite wave-absorbing material and preparation method thereof |
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