CN111909524A - Silica gel wave-absorbing material for high-frequency welding and preparation method thereof - Google Patents
Silica gel wave-absorbing material for high-frequency welding and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a silica gel wave-absorbing material for high-frequency welding and a preparation method thereof, wherein the silica gel wave-absorbing material comprises the following components in parts by mass: 100-200 parts of silicone rubber; 1-8 parts of a reinforcing agent; 3-15 parts of a coupling agent; 0.8-10 parts of a vulcanizing agent; 400-900 parts of wave absorbing agent. Compared with the common wave-absorbing material on the market, the wave-absorbing material prepared by the invention is applied to the field of high-frequency welding, can ensure better wave-absorbing performance, and has more stable wave-absorbing performance.
Description
Technical Field
The invention relates to the field of electromagnetic wave absorbing materials, in particular to a silica gel wave absorbing material for high-frequency welding and a preparation method thereof.
Background
By a wave-absorbing material is meant a material that absorbs or substantially attenuates electromagnetic wave energy impinging on its surface, thereby reducing the interference of electromagnetic waves. In engineering application, the wave-absorbing material is required to have high absorption rate to electromagnetic waves in a wider frequency band, and also required to have the properties of light weight, temperature resistance, moisture resistance, corrosion resistance and the like.
Wave-absorbing materials can be classified into the following three categories according to loss mechanisms: 1) resistive losses, such absorption mechanisms and resistive losses associated with the conductivity of the material, i.e. the greater the conductivity, the greater the macroscopic current flow caused by the carriers (including current flow caused by changes in the electric field and eddy currents caused by changes in the magnetic field), thereby facilitating the conversion of electromagnetic energy into thermal energy. 2) Dielectric loss, which is a type of dielectric loss absorption mechanism associated with the electrodes, converts electromagnetic energy into heat and dissipates the energy through the "rubbing" action caused by the repeated polarization of the medium. The dielectric polarization process includes: electron cloud displacement polarization, polar medium electric moment steering polarization, ferroelectric electric domain steering polarization, wall displacement and the like. 3) Magnetic losses, such absorption mechanisms being a type of magnetic losses associated with the dynamic magnetization process of ferromagnetic media, such losses can be refined as: the main sources of hysteresis loss, gyromagnetic eddy current, damping loss, magnetic aftereffect and the like are magnetic domain turning, magnetic domain wall displacement, magnetic domain natural resonance and the like similar to a hysteresis mechanism. In addition, the latest nano material microwave loss mechanism is a big hot spot of wave-absorbing material analysis nowadays.
Although the wave absorbing effect of the existing wave absorbing material is greatly improved, the existing wave absorbing material has the problem of poor wave absorbing effect in the field of high-frequency welding.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a silica gel wave-absorbing material for high-frequency welding and a preparation method thereof, and aims to solve the problem that the wave-absorbing effect of the existing wave-absorbing material in the field of high-frequency welding is poor.
The technical scheme of the invention is as follows:
a silica gel absorbing material for high-frequency welding comprises the following components in parts by mass:
100-200 parts of silicone rubber;
1-8 parts of a reinforcing agent;
3-15 parts of a coupling agent;
0.8-10 parts of a vulcanizing agent;
400-900 parts of wave absorbing agent.
The silica gel wave-absorbing material is characterized in that the rubber is methyl vinyl silicone rubber.
The silica gel wave-absorbing material is characterized in that the reinforcing agent is fumed silica.
The silica gel wave-absorbing material is characterized in that the coupling agent is a silane coupling agent, a phthalate coupling agent or an aluminate coupling agent.
The silica gel wave-absorbing material is characterized in that the silane coupling agent is an A-151 silane coupling agent.
The silica gel wave-absorbing material is characterized in that the vulcanizing agent is a bis-pentachio vulcanizing agent.
The silica gel wave-absorbing material is characterized in that the wave-absorbing agent is iron-silicon-aluminum magnetic powder, iron powder or graphite powder.
The preparation method of the silica gel wave-absorbing material for high-frequency welding comprises the following steps:
carrying out surface treatment on the wave absorbing agent by using a coupling agent, and then stirring the wave absorbing agent treated by the coupling agent and silicon rubber;
stirring the mixture obtained by stirring and the rest raw materials until the mixture is uniformly mixed;
and injecting the mixture obtained by uniformly mixing into a calender for calendering and curing to obtain the silica gel wave-absorbing material.
The preparation method comprises the step of curing for 5-15 min at the temperature of 150 ℃ under the condition of calendering and curing.
The preparation method comprises the following steps after calendering and curing:
and rolling the silica gel wave-absorbing material by using a rolling machine.
Has the advantages that: compared with the common wave-absorbing material on the market, the wave-absorbing material prepared by the invention is applied to the field of high-frequency welding, can ensure better wave-absorbing performance, and has more stable wave-absorbing performance.
Detailed Description
The invention provides a silica gel wave-absorbing material for high-frequency welding and a preparation method thereof, and the invention is further described in detail below in order to make the purpose, technical scheme and effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a silica gel wave-absorbing material for high-frequency welding, which comprises the following components in parts by mass:
100-200 parts of silicone rubber;
1-8 parts of a reinforcing agent;
3-15 parts of a coupling agent;
0.8-10 parts of a vulcanizing agent;
400-900 parts of wave absorbing agent.
Compared with the common wave-absorbing material on the market, the wave-absorbing material prepared by the invention is applied to the field of high-frequency welding, can ensure better wave-absorbing performance, and has more stable wave-absorbing performance.
Further, the rubber is preferably a methyl vinyl silicone rubber. Methyl vinyl silicone rubber, vinyl silicone rubber for short, is copolymerized by dimethyl siloxane and a small amount of vinyl siloxane, and the vinyl content is generally 0.1-0.3 percent (mole fraction). The introduction of a small amount of unsaturated vinyl groups greatly improves the vulcanization process and the properties of finished products, particularly the heat aging resistance and the high-temperature compression deformation resistance. The content of the methylvinylsiloxane unit has great influence on the vulcanization effect and the heat resistance of the vulcanized rubber, the effect is not obvious when the content is too small, and the heat resistance of the vulcanized rubber is reduced when the content is too large.
Further, the reinforcing agent is preferably fumed silica. The fumed silica is one of the extremely important nano-scale inorganic raw materials, and has the advantages of large specific surface area, strong surface adsorption, large surface energy, high chemical purity, good dispersion performance, specific performances in the aspects of thermal resistance, electric resistance and the like, and excellent stability, reinforcing property, thickening property and thixotropy due to small particle size. It can be used as an excellent reinforcing agent for rubber because it exhibits specific functions in terms of magnetism, catalytic properties, light absorption, heat resistance, melting point, etc. as compared with conventional materials.
Further, the coupling agent is a silane coupling agent, a phthalate coupling agent or an aluminate coupling agent. The coupling agent is a plastic additive, also called surface modifier, which improves the interfacial properties of synthetic resins and inorganic fillers or reinforcing materials in the plastic compounding. It can reduce the viscosity of synthetic resin melt in the course of plastic processing, and can improve the dispersity of filling agent to raise processing property, so that it can make the product obtain good surface quality and mechanical, thermal and electric properties. The amount of the filler is generally 0.5 to 2% of the amount of the filler. The coupling agent is a substance with two functional groups with different properties, and the molecular structure of the coupling agent is mainly characterized in that the molecule contains two groups with different chemical properties, one group is an inorganophilic group and is easy to chemically react with the surface of an inorganic substance; the other is an organophilic group which is capable of chemically reacting with or forming hydrogen bonds soluble in synthetic resins or other polymers. Therefore, the coupling agent is called as a molecular bridge and is used for improving the interface action between inorganic matters and organic matters, so that the properties of the composite material, such as physical properties, electrical properties, thermal properties, optical properties and the like, are greatly improved. In the invention, the wear resistance and the aging resistance of the product can be improved by adding the coupling agent, and the dosage of NR can be reduced, thereby reducing the cost. Meanwhile, the coupling agent is added, and the coupling agent can react with certain groups on the surface of the reinforced material and also react with matrix resin, so that an interface layer is formed between the reinforced material and the resin matrix, and the interface layer can transfer stress, thereby enhancing the bonding strength between the reinforced material and the resin and improving the performance of the composite material.
Further, the silane coupling agent is an A-151 silane coupling agent. The silane coupling agent A-151 is a chemical substance with the molecular formula of CH2 ═ CHSi (OC)2H5)3. The method is mainly used for polyethylene crosslinking; glass fiber surface treatment of glass fiber reinforced plastics such as unsaturated polyester, polyethylene, polypropylene resin and the like; synthesizing a special coating; an adhesive; carrying out surface moisture-proof treatment on the electronic component; surface treatment of inorganic siliceous fillers, and the like. The silane coupling agent A-151 is also used as a filler for treating special rubbers.
Further, the vulcanizing agent is a bis-pentacarbon vulcanizing agent. The bis-di-penta vulcanizing agent is a chemical substance and is used as a cross-linking agent of adhesives such as silicon rubber, chlorosulfonated polyethylene, polyurethane, EVA and the like, and the reference dosage is 0.5-3.0%. Also used as an initiator.
Further, the wave absorbing agent is iron-silicon-aluminum magnetic powder, iron powder or graphite powder. The Fe-Si-Al powder is prepared by melting alloy and atomizing high-pressure nitrogen, and the alloy powder with lower oxygen content and better sphericity is prepared. The invention also preferably adopts the Fe-Si-Al magnetic powder as the wave absorbing agent, and the wave absorbing material prepared by matching with other raw materials has better wave absorbing performance.
The invention also provides a preparation method of the silica gel wave-absorbing material for high-frequency welding, which comprises the following steps:
s1, performing surface treatment on the wave absorbing agent by using a coupling agent, and then stirring the wave absorbing agent subjected to the coupling agent treatment and silicon rubber;
s2, stirring the mixture obtained by stirring and the rest raw materials until the mixture is uniformly mixed;
and S3, injecting the uniformly mixed mixture into a calender for calendering and curing to obtain the silica gel wave-absorbing material.
In step S1, the wave absorbing agent is first surface-treated with a coupling agent to improve the surface properties of the wave absorbing agent, thereby facilitating the combination of the wave absorbing agent with other raw materials.
After the surface treatment, the wave absorbing agent treated by the coupling agent is stirred with the silicone rubber, and specifically, the mixture can be put into a stirrer to be stirred so as to uniformly mix the raw materials.
In the step S2, the mixture obtained by stirring is stirred with the rest raw materials until the mixture is uniformly mixed.
The purpose of this step is to mix the remaining raw materials and the mixture stirred in step S1 uniformly, that is, all raw materials are mixed in this step to mix the raw materials sufficiently.
In the step S3, the uniformly mixed mixture in the step S2 is injected into a calender to be calendered and cured. The calender (calender) is a machine which is composed of two or more rollers arranged in a certain form, and is used for pressing and extending rubber or plastic into a film with a certain thickness and surface shape at a certain temperature and can be used for coating a fiber curtain canvas or a steel wire curtain cloth with rubber. The thickness of the silica gel wave-absorbing material can be adjusted by rolling through a rolling machine.
The specific conditions of calendering and curing are as follows: curing for 5-15 min at the temperature of 150 ℃. Under the condition of calendering and curing, the prepared silica gel wave-absorbing material has better forming effect and better wave-absorbing performance.
Further, the method also comprises the following steps after calendering and curing:
and rolling the silica gel wave-absorbing material by using a rolling machine.
Through the steps, the silica gel wave-absorbing material can be made into a roll-shaped silica gel wave-absorbing material, and the packing, the transportation, the use and the like are convenient.
Example 1
The silica gel wave-absorbing material for high-frequency welding provided by the embodiment comprises the following components in parts by mass: 100 parts of silicon rubber; 8 parts of a reinforcing agent; 3 parts of a coupling agent; 10 parts of a vulcanizing agent; 400 parts of wave absorbing agent.
The preparation method comprises the following steps:
s1, performing surface treatment on the wave absorbing agent by using a coupling agent, and then stirring the wave absorbing agent subjected to the coupling agent treatment and silicon rubber;
s2, stirring the mixture obtained by stirring and the rest raw materials until the mixture is uniformly mixed;
and S3, injecting the uniformly mixed mixture into a calender for calendering and curing to obtain the silica gel wave-absorbing material. The specific conditions of calendering and curing are as follows: curing at 150 deg.C for 5 min;
and S4, rolling the silica gel wave-absorbing material through a rolling machine.
Example 2
The silica gel wave-absorbing material for high-frequency welding provided by the embodiment comprises the following components in parts by mass: 200 parts of silicon rubber; 1 part of reinforcing agent; 15 parts of a coupling agent; 0.8 part of a vulcanizing agent; 900 parts of wave absorbing agent.
The preparation method comprises the following steps:
s1, performing surface treatment on the wave absorbing agent by using a coupling agent, and then stirring the wave absorbing agent subjected to the coupling agent treatment and silicon rubber;
s2, stirring the mixture obtained by stirring and the rest raw materials until the mixture is uniformly mixed;
and S3, injecting the uniformly mixed mixture into a calender for calendering and curing to obtain the silica gel wave-absorbing material. The specific conditions of calendering and curing are as follows: curing at 150 deg.C for 15 min;
and S4, rolling the silica gel wave-absorbing material through a rolling machine.
Example 3
The silica gel wave-absorbing material for high-frequency welding provided by the embodiment comprises the following components in parts by mass: 150 parts of silicone rubber; 5 parts of a reinforcing agent; 10 parts of a coupling agent; 5 parts of a vulcanizing agent; 600 parts of wave absorbing agent.
The preparation method comprises the following steps:
s1, performing surface treatment on the wave absorbing agent by using a coupling agent, and then stirring the wave absorbing agent subjected to the coupling agent treatment and silicon rubber;
s2, stirring the mixture obtained by stirring and the rest raw materials until the mixture is uniformly mixed;
and S3, injecting the uniformly mixed mixture into a calender for calendering and curing to obtain the silica gel wave-absorbing material. The specific conditions of calendering and curing are as follows: curing at 150 deg.C for 10 min;
and S4, rolling the silica gel wave-absorbing material through a rolling machine.
Example 4
The silica gel wave-absorbing material for high-frequency welding provided by the embodiment comprises the following components in parts by mass: 120 parts of silicone rubber; 6 parts of a reinforcing agent; 8 parts of a coupling agent; 3 parts of a vulcanizing agent; 500 parts of wave absorbing agent.
The preparation method comprises the following steps:
s1, performing surface treatment on the wave absorbing agent by using a coupling agent, and then stirring the wave absorbing agent subjected to the coupling agent treatment and silicon rubber;
s2, stirring the mixture obtained by stirring and the rest raw materials until the mixture is uniformly mixed;
and S3, injecting the uniformly mixed mixture into a calender for calendering and curing to obtain the silica gel wave-absorbing material. The specific conditions of calendering and curing are as follows: curing at 150 deg.C for 7 min;
and S4, rolling the silica gel wave-absorbing material through a rolling machine.
Example 5
The silica gel wave-absorbing material for high-frequency welding provided by the embodiment comprises the following components in parts by mass: 180 parts of silicon rubber; 2 parts of a reinforcing agent; 12 parts of a coupling agent; 8 parts of a vulcanizing agent; 700 parts of wave absorbing agent.
The preparation method comprises the following steps:
s1, performing surface treatment on the wave absorbing agent by using a coupling agent, and then stirring the wave absorbing agent subjected to the coupling agent treatment and silicon rubber;
s2, stirring the mixture obtained by stirring and the rest raw materials until the mixture is uniformly mixed;
and S3, injecting the uniformly mixed mixture into a calender for calendering and curing to obtain the silica gel wave-absorbing material. The specific conditions of calendering and curing are as follows: curing at 150 deg.C for 8 min;
and S4, rolling the silica gel wave-absorbing material through a rolling machine.
Example 6
The silica gel wave-absorbing material for high-frequency welding provided by the embodiment comprises the following components in parts by mass: 160 parts of silicon rubber; 4 parts of a reinforcing agent; 6 parts of a coupling agent; 9 parts of a vulcanizing agent; 800 parts of wave absorbing agent.
The preparation method comprises the following steps:
s1, performing surface treatment on the wave absorbing agent by using a coupling agent, and then stirring the wave absorbing agent subjected to the coupling agent treatment and silicon rubber;
s2, stirring the mixture obtained by stirring and the rest raw materials until the mixture is uniformly mixed;
and S3, injecting the uniformly mixed mixture into a calender for calendering and curing to obtain the silica gel wave-absorbing material. The specific conditions of calendering and curing are as follows: curing at 150 deg.C for 12 min;
and S4, rolling the silica gel wave-absorbing material through a rolling machine.
Example 7
The silica gel wave-absorbing material for high-frequency welding provided by the embodiment comprises the following components in parts by mass: 140 parts of silicon rubber; 3 parts of a reinforcing agent; 11 parts of a coupling agent; 3 parts of a vulcanizing agent; 650 parts of a wave absorbing agent.
The preparation method comprises the following steps:
s1, performing surface treatment on the wave absorbing agent by using a coupling agent, and then stirring the wave absorbing agent subjected to the coupling agent treatment and silicon rubber;
s2, stirring the mixture obtained by stirring and the rest raw materials until the mixture is uniformly mixed;
and S3, injecting the uniformly mixed mixture into a calender for calendering and curing to obtain the silica gel wave-absorbing material. The specific conditions of calendering and curing are as follows: curing at 150 deg.C for 14 min;
and S4, rolling the silica gel wave-absorbing material through a rolling machine.
Example 8
The silica gel wave-absorbing material for high-frequency welding provided by the embodiment comprises the following components in parts by mass: 190 parts of silicon rubber; 7 parts of a reinforcing agent; 14 parts of a coupling agent; 4 parts of a vulcanizing agent; 750 parts of wave absorbing agent.
The preparation method comprises the following steps:
s1, performing surface treatment on the wave absorbing agent by using a coupling agent, and then stirring the wave absorbing agent subjected to the coupling agent treatment and silicon rubber;
s2, stirring the mixture obtained by stirring and the rest raw materials until the mixture is uniformly mixed;
and S3, injecting the uniformly mixed mixture into a calender for calendering and curing to obtain the silica gel wave-absorbing material. The specific conditions of calendering and curing are as follows: curing at 150 deg.C for 9 min;
and S4, rolling the silica gel wave-absorbing material through a rolling machine.
Example 9
The silica gel wave-absorbing material for high-frequency welding provided by the embodiment comprises the following components in parts by mass: 130 parts of silicon rubber; 6 parts of a reinforcing agent; 7 parts of a coupling agent; 4 parts of a vulcanizing agent; 550 parts of a wave absorbing agent.
The preparation method comprises the following steps:
s1, performing surface treatment on the wave absorbing agent by using a coupling agent, and then stirring the wave absorbing agent subjected to the coupling agent treatment and silicon rubber;
s2, stirring the mixture obtained by stirring and the rest raw materials until the mixture is uniformly mixed;
and S3, injecting the uniformly mixed mixture into a calender for calendering and curing to obtain the silica gel wave-absorbing material. The specific conditions of calendering and curing are as follows: curing at 150 deg.C for 13 min;
and S4, rolling the silica gel wave-absorbing material through a rolling machine.
Examples test data are shown in tables 1, 2 and 3
TABLE 1 parameter table
TABLE 2 unprotected test data
TABLE 3 protection test data
Table 2 shows that the material of each example was not wrapped around a copper tube (non-coil working portion) through which the induction coil was energized and cooled water was energized. The temperature of the stainless steel and iron parts around the copper pipe is checked, and the temperature can be tested by touching, watering and other modes, and the copper pipe is internally provided with a cooling water copper pipe, so that the wall of the copper pipe is in a low-temperature state.
Table 3 refers to the wrapping of the materials of the examples on copper tubes (non-coil working parts) of the induction coils for energization and cooling water energization. The temperature of the stainless steel and iron parts around the copper pipe is checked, and the temperature can be tested by touching, watering and other modes, and the copper pipe is internally provided with a cooling water copper pipe, so that the wall of the copper pipe is in a low-temperature state.
As can be seen from the comparison between tables 2 and 3, the wave-absorbing materials prepared by the invention are applied to the field of high-frequency welding, so that the wave-absorbing materials have good wave-absorbing performance, and the wave-absorbing materials prepared by the invention have more stable wave-absorbing performance.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A silica gel wave-absorbing material for high-frequency welding is characterized by comprising the following components in parts by mass:
100-200 parts of silicone rubber;
1-8 parts of a reinforcing agent;
3-15 parts of a coupling agent;
0.8-10 parts of a vulcanizing agent;
400-900 parts of wave absorbing agent.
2. The silica gel wave-absorbing material of claim 1, wherein the rubber is methyl vinyl silicone rubber.
3. The silica gel wave-absorbing material of claim 1, wherein the reinforcing agent is fumed silica.
4. The silica gel wave-absorbing material of claim 1, wherein the coupling agent is a silane coupling agent, a phthalate coupling agent, or an aluminate coupling agent.
5. The silica gel wave-absorbing material of claim 4, wherein the silane coupling agent is an A-151 silane coupling agent.
6. The silica gel wave-absorbing material of claim 1, wherein the vulcanizing agent is a bis-penta vulcanizing agent.
7. The silica gel wave-absorbing material of claim 1, wherein the wave-absorbing agent is sendust, iron powder, or graphite powder.
8. A preparation method of the silica gel wave-absorbing material for high-frequency welding according to any one of claims 1 to 7, comprising the following steps:
carrying out surface treatment on the wave absorbing agent by using a coupling agent, and then stirring the wave absorbing agent treated by the coupling agent and silicon rubber;
stirring the mixture obtained by stirring and the rest raw materials until the mixture is uniformly mixed;
and injecting the mixture obtained by uniformly mixing into a calender for calendering and curing to obtain the silica gel wave-absorbing material.
9. The preparation method according to claim 8, wherein the calendering and curing conditions are 150 ℃ and 5-15 min.
10. The method of claim 8, further comprising the following steps after the calendering and curing:
and rolling the silica gel wave-absorbing material by using a rolling machine.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115028926A (en) * | 2022-04-24 | 2022-09-09 | 重庆市鸿富诚电子新材料有限公司 | High-frequency wave-absorbing material and preparation method thereof |
| CN115947601A (en) * | 2022-12-20 | 2023-04-11 | 重庆市鸿富诚电子新材料有限公司 | Ceramic wave-absorbing material and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585507A (en) * | 2012-02-20 | 2012-07-18 | 深圳德邦界面材料有限公司 | High-performance silicon-based wave absorbing material and preparation method thereof |
| RU2497851C1 (en) * | 2012-05-24 | 2013-11-10 | Открытое акционерное общество "Научно-исследовательский институт приборостроения имени В.В. Тихомирова" | Polymer composition for absorbing high-frequency energy |
| CN104292526A (en) * | 2014-11-03 | 2015-01-21 | 济南中正新材料有限公司 | Ultra-thin continuous winding wave-absorbing material |
| CN108633243A (en) * | 2018-06-07 | 2018-10-09 | 深圳和畅电磁材料有限公司 | A kind of heat conduction absorbing material |
| CN108641373A (en) * | 2018-05-16 | 2018-10-12 | 浙江禾为新材料科技有限公司 | A kind of high band heat conduction suction wave insulating materials |
| CN108727778A (en) * | 2017-04-25 | 2018-11-02 | 深圳光启高等理工研究院 | Absorbing material and preparation method thereof |
| CN109651799A (en) * | 2018-12-19 | 2019-04-19 | 航天科工武汉磁电有限责任公司 | Wave absorbing patch, preparation method and its application |
| CN109957247A (en) * | 2017-12-25 | 2019-07-02 | 洛阳尖端技术研究院 | A kind of wave absorbing patch and its preparation method and application |
-
2020
- 2020-07-28 CN CN202010740073.XA patent/CN111909524A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585507A (en) * | 2012-02-20 | 2012-07-18 | 深圳德邦界面材料有限公司 | High-performance silicon-based wave absorbing material and preparation method thereof |
| RU2497851C1 (en) * | 2012-05-24 | 2013-11-10 | Открытое акционерное общество "Научно-исследовательский институт приборостроения имени В.В. Тихомирова" | Polymer composition for absorbing high-frequency energy |
| CN104292526A (en) * | 2014-11-03 | 2015-01-21 | 济南中正新材料有限公司 | Ultra-thin continuous winding wave-absorbing material |
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