Tear-resistant wave-absorbing edge-sealing adhesive tape and preparation method thereof

Abstract

The invention discloses a tear-resistant wave-absorbing edge sealing adhesive tape and a preparation method thereof, and belongs to the technical field of wave-absorbing materials. The tear-resistant wave-absorbing edge-sealing adhesive tape is characterized by comprising the following components: a fabric and wave-absorbing silicone oil, the mass ratio of the fabric to the wave-absorbing silicone oil is 1: (10-50), and the wave-absorbing silicone oil comprises the following components: an absorbent, vinyl silicone oil, hydrogen-containing silicone oil and fumed silica. In order to increase the compatibility of the absorbent, the absorbent is subjected to surface treatment through a silane coupling agent. The tear-resistant wave-absorbing edge-sealing adhesive tape provided by the invention realizes excellent physical properties and functional characteristics, and has a wide application prospect.

Description

Technical Field

[0001] The invention belongs to the technical field of wave-absorbing materials, and in particular to a tear-resistant wave-absorbing edge-sealing adhesive strip and a preparation method thereof. Background Art

[0002] Absorbing materials are one of the important technical means to achieve stealth of weapons and equipment, and are also the basis for building absorbing performance. By using absorbing materials, the signal characteristics can be significantly reduced without changing the target's appearance, reducing the possibility of being discovered by the enemy's detection system, thereby improving the survivability and combat effectiveness of weapons and equipment.

[0003] In all kinds of weapons and equipment on the ground, sea and air, especially those designs that contain a large number of moving parts (such as hatches and covers), due to the limitations of machining accuracy, there will inevitably be certain assembly errors that lead to gaps. These tiny but non-negligible spaces become potential secondary scattering sources, seriously affecting the overall stealth performance. At this time, by attaching specially designed absorbing edge sealing strips to the joint surface, these defects can be well filled to ensure that the entire shell surface is continuous, smooth and uninterrupted. In addition to directly blocking the physical opening, high-quality absorbing edge sealing strips can further absorb a small amount of electromagnetic waves escaping from the gaps, further enhancing the overall stealth.

[0004] Although the radar-absorbing edge-sealing strips have excellent electrical properties, they face problems such as wear and even tear caused by frequent opening and closing during actual application. Especially when working in extreme temperature changes and harsh environments, it is difficult for ordinary materials to maintain good condition for a long time.

[0005] A Chinese patent with application number 202111394955.6 discloses a silicone rubber absorbing composite material and a preparation method thereof. The silicone rubber absorbing composite material of the invention is made of vinyl silicone oil, hydrogen-containing silicone oil, absorbing filler, reinforcing filler, platinum catalyst and inhibitor. The preparation method comprises the following steps: mixing vinyl silicone oil, hydrogen-containing silicone oil, absorbing filler, reinforcing filler and inhibitor evenly, adding platinum catalyst and mixing evenly, and then vulcanizing to obtain a silicone rubber absorbing composite material; the silicone rubber absorbing composite material in the invention does not have good environmental adaptability and tear resistance.

[0006] The Chinese patent application with application number 202210920105.3 discloses a wave-absorbing silicone rubber and a preparation method thereof, wherein the wave-absorbing silicone rubber comprises the following raw materials: 100 parts of methyl vinyl silicone rubber, 0.05-20 parts of white carbon black, 200-400 parts of absorbent, 1-10 parts of vinyl silicone oil, 1-20 parts of hydrogen-containing silicone oil, and 1.5-3 parts of vulcanizing agent, wherein the absorbent is modified with a silane coupling agent. Compared with ordinary wave-absorbing silicone rubber, the wave-absorbing silicone rubber provided by the present invention has a tensile strength increased by about 2 times and a tear strength increased by about 50-100%; the material is not easy to form wave-absorbing edge-sealing strips of various shapes, and it is difficult to ensure the flexibility of the material and environmental adaptability while having good tensile strength and tear strength.

[0007] When absorbing silicone rubber is used as an absorbing material, a higher filling amount is generally used to achieve higher absorbing performance. However, when the powder filling amount is high, the processing performance of absorbing silicone rubber deteriorates, and a higher temperature is required to maintain the fluidity of the rubber material before injection molding. At this temperature, due to the heat accumulation of the absorbent, the rubber is easily vulcanized and the injection molding effect is affected. In addition, the non-polar characteristics of silicone rubber result in poor body strength and tear strength compared with other synthetic rubbers. Therefore, it is necessary to improve the silicone rubber electromagnetic shielding material system to improve its body strength and tear strength while retaining flexibility, temperature resistance and environmental adaptability.

[0008] In order to meet the needs of different application scenarios, the ideal absorbing edge sealing solution should be flexible enough to adapt to various complex shapes, while also having high enough mechanical strength to withstand external impact without being damaged. Summary of the invention

[0009] In order to solve the above problems, the present invention provides a tear-resistant wave-absorbing edge-sealing strip and a preparation method thereof, which improves the body strength and tear resistance of the wave-absorbing edge-sealing strip while ensuring its flexibility, temperature resistance and environmental adaptability.

[0010] The tear-resistant wave-absorbing edge-sealing strip comprises the following components: fabric and wave-absorbing silicone oil, wherein the mass ratio of the fabric to the wave-absorbing silicone oil is 1:10-50, and the wave-absorbing silicone oil comprises the following components: absorbent, vinyl silicone oil, hydrogenated silicone oil, and fumed silica.

[0011] Preferably, the fabric includes aramid fabric, polyester fabric, nylon fabric or acrylic fabric. These fabrics have good strength and wear resistance and are suitable as the substrate of the edge banding strip.

[0012] Preferably, the microwave-absorbing silicone oil comprises the following raw materials in parts by mass: 100 parts of absorbent, 20-50 parts of vinyl silicone oil, 20-50 parts of hydrogenated silicone oil, and 10-50 parts of fumed silica.

[0013] Preferably, the absorbent includes carbonyl iron powder, sendustine powder or sendustine chromium powder.

[0014] Preferably, the absorbent is a modified absorbent after surface treatment with a silane coupling agent, which is mainly prepared by the following steps: dispersing the absorbent in an organic solvent, adding a silane coupling agent under stirring to perform surface treatment, and obtaining the modified absorbent. The modified absorbent has a higher binding force with the silicone oil.

[0015] Preferably, the silane coupling agent is a methyl acrylic silane coupling agent or a silane coupling agent with a vinyl group.

[0016] Preferably, the mass of the silane coupling agent is 1% to 10% of the mass of the absorbent.

[0017] Preferably, the mass ratio of the absorbent to the organic solvent is 1:5-20.

[0018] Preferably, the stirring speed is 500-1000 rpm, and the surface modification treatment time is 50-300 min.

[0019] The vinyl silicone oil is used to improve the crosslinking density and heat resistance. Preferably, the viscosity of the vinyl silicone oil is 500-5000 Pa·s.

[0020] Preferably, the vinyl silicone oil includes phenyl vinyl silicone oil, linear vinyl silicone oil or branched vinyl silicone oil.

[0021] The hydrogen-containing silicone oil is used to improve flexibility and weather resistance. Preferably, the hydrogen content of the hydrogen-containing silicone oil is ≥0.5%.

[0022] Preferably, the hydrogen-containing silicone oil includes phenyl hydrogen-containing silicone oil or methyl hydrogen-containing silicone oil.

[0023] The method for preparing the tear-resistant wave-absorbing edge-sealing strip comprises the following steps: S1, soaking the fabric in alkali solution, then washing and drying, subjecting the dried fabric to plasma treatment, coating the surface of the fabric with a xylene solution containing an initiator, and drying to obtain the surface-treated fabric; S2, stirring and dispersing the absorbent, fumed silica, vinyl silicone oil and hydrogen-containing silicone oil to obtain microwave absorbing silicone oil; S3, fixing the surface treated fabric obtained in step S1 in a mold cavity, injecting the microwave-absorbing silicone oil obtained in step S2 to fill the mold, heating and molding, and obtaining the tear-resistant microwave-absorbing edge-sealing strip.

[0024] Preferably, the concentration of the alkali solution in step S1 is 10%wt~20%wt.

[0025] Preferably, the alkali solution in step S1 is a sodium hydroxide solution or a potassium hydroxide solution.

[0026] Preferably, the power of the plasma treatment in step S1 is 50-500 W, and the treatment time is 20-90 s.

[0027] Preferably, the initiator in step S1 is an organic peroxide.

[0028] Preferably, the concentration of the initiator in the xylene solution in step S1 is 5%wt~20%wt; the concentration of the microwave-absorbing silicone oil is 5%wt~15%wt.

[0029] Preferably, the coating amount in step S1 is 50-100 g / m 2 .

[0030] Preferably, before injection, the microwave-absorbing silicone oil in step S2 is heated to a viscosity lower than 1000 mPa·s.

[0031] Preferably, the heating molding in step S3 is performed at a temperature of 90 to 180° C. and for a duration of 5 to 60 min.

[0032] Compared with the prior art, the beneficial effects of the present invention are: The tear-resistant wave-absorbing edge-sealing rubber strip provided by the present invention comprises wave-absorbing silicone oil and fabric, wherein the wave-absorbing silicone oil comprises an absorbent, vinyl silicone oil, and hydrogen-containing silicone oil, and the absorbent is surface-treated by a silane coupling agent. On the one hand, the fabric is used to compound the wave-absorbing silicone oil, so that the body strength and tear resistance of the wave-absorbing edge-sealing rubber strip are greatly improved by reinforcing the fabric skeleton while retaining the flexibility, temperature resistance and environmental resistance of the synthetic silicone rubber. Moreover, since there is no initiator in the wave-absorbing silicone oil, self-polymerization will not occur during the heating process and injection molding cannot be performed. On the other hand, active groups are generated on the surface of the fabric after plasma treatment, which are bonded with the initiator. One end of the initiator generates a stable chemical bond with the fabric, and the other end generates free radicals. After the wave-absorbing silicone oil is injected on the surface of the fabric, at a certain temperature, the free radicals react with the absorbent treated with the vinyl silicone oil and the coupling agent, and the hydrogen ions in the hydrogen-containing silicone oil can transfer the free radicals on the surface of the fabric to cause the wave-absorbing silicone oil to undergo a cross-linking reaction as a whole, and cross-linking is started from the surface of the fabric to form a network structure, which effectively improves the bonding strength between the rubber and the fabric, and is conducive to improving the strength of the wave-absorbing edge-sealing rubber strip. DETAILED DESCRIPTION

[0033] To make the purpose, technical scheme and advantages of the embodiment of the present invention clearer, the technical scheme in the embodiment of the present invention will be described clearly and completely below. If the specific conditions are not specified in the embodiment, it is carried out according to the normal conditions or the conditions recommended by the manufacturer. If the reagents or instruments used do not specify the manufacturer, they are all conventional products that can be purchased commercially. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes, taking "A and / or B" as an example, including scheme A, or scheme B, or schemes that A and B meet at the same time. In addition, the technical schemes between the various embodiments can be combined with each other, but must be based on the ability of ordinary technicians in the field to achieve. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that the combination of such technical solutions does not exist, and is not within the scope of protection required by the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present invention.

[0034] Example 1 A tear-resistant wave-absorbing edge-sealing strip comprises a nylon fabric and wave-absorbing silicone oil in a mass ratio of 1:20, wherein the wave-absorbing silicone oil comprises the following raw materials in mass fractions: 100 parts of modified carbonyl iron powder, 40 parts of vinyl silicone oil with a viscosity of 1000 Pa·s, 30 parts of hydrogen-containing silicone oil with a hydrogen content of 0.5%, and 30 parts of fumed silica; the modified absorbent is a modified absorbent surface-treated with a vinyl-containing silane coupling agent.

[0035] The modified absorbent is prepared by the following steps: adding 100 parts of carbonyl iron powder to 500 parts of anhydrous ethanol, stirring at a speed of 800 rpm, adding 1 part of vinyl triethoxysilane, treating for 180 minutes, and drying after the treatment to obtain the modified absorbent.

[0036] The tear-resistant wave-absorbing edge-sealing strip is prepared by the following steps: S1. Soak the nylon fabric in a 10% sodium hydroxide solution to remove the oil on the surface of the fabric, then wash and dry it. After drying, treat the fabric with plasma at a power of 200 W for 30 seconds. Then, apply a 10% xylene solution of benzoyl peroxide on the surface of the fabric at a coating amount of 75 g / m 2 , drying to obtain the surface-treated fabric; S2, stirring and dispersing the modified carbonyl iron powder, fumed silica, vinyl silicone oil and hydrogen-containing silicone oil according to the above proportions to obtain microwave absorbing silicone oil; S3, fixing the surface treated fabric obtained in step S1 in the mold cavity, heating the microwave-absorbing silicone oil in step S2 to a viscosity lower than 1000 mPa·s, injecting the heated microwave-absorbing silicone oil to fill the mold, heating and molding, the heating temperature is 140° C., the heating molding time is 40 min, and the tear-resistant microwave-absorbing edge sealing strip is obtained.

[0037] The fabric is soaked in alkali solution, then washed and dried. After the fabric is plasma treated, a xylene solution containing an initiator is coated on the surface of the fabric, and then dried to obtain the surface-treated fabric. In this way, on the one hand, the fabric is compounded with the absorbing silicone oil, and the body strength and tear resistance of the absorbing edge-sealing rubber strip are greatly improved by strengthening the fabric skeleton while retaining the flexibility, temperature resistance and environmental resistance of the synthetic silicone rubber. In addition, since there is no initiator in the absorbing silicone oil, self-polymerization will not occur during the heating process and injection molding cannot be performed. On the other hand, active groups are generated on the surface of the fabric after plasma treatment, which are bonded with the initiator. One end of the initiator generates a stable chemical bond with the fabric, and the other end generates free radicals. After the absorbing silicone oil is injected on the surface of the fabric, at a certain temperature, the free radicals react with the absorbent treated with the vinyl silicone oil and the coupling agent. The hydrogen ions in the hydrogen-containing silicone oil can transfer the free radicals on the surface of the fabric to cause the absorbing silicone oil to undergo a cross-linking reaction as a whole, and the cross-linking network is reinforced by the fumed silica, which effectively improves the bonding strength between the rubber and the fabric, which is beneficial to improving the strength of the absorbing edge-sealing rubber strip.

[0038] Example 2 A tear-resistant wave-absorbing edge-sealing strip is basically the same as Example 1, except that, in the process of modifying the carbonyl iron powder, 2 parts of vinyl triethoxysilane are added.

[0039] Example 3 A tear-resistant wave-absorbing edge-sealing strip is basically the same as Example 1, except that, in the process of modifying the carbonyl iron powder, 4 parts of vinyl triethoxysilane are added.

[0040] Example 4 A tear-resistant wave-absorbing edge-sealing strip, comprising aramid fabric and wave-absorbing silicone oil in a mass ratio of 1:50, wherein the wave-absorbing silicone oil comprises the following raw materials in mass fractions: 100 parts of modified iron-silicon-chromium powder, 20 parts of phenyl vinyl silicone oil with a viscosity of 1000 Pa·s, 20 parts of phenyl hydrogen silicone oil with a hydrogen content of 1%, and 10 parts of fumed silica. The modified iron silicon chromium powder is prepared by the following steps: adding 100 parts of iron silicon chromium powder to 500 parts of anhydrous ethanol, stirring at a speed of 600 rpm, adding 3%wt of methacryloxytriethoxysilane, treating for 300 minutes, and drying after the treatment to obtain the modified iron silicon chromium powder.

[0041] The tear-resistant wave-absorbing edge-sealing strip is prepared by the following steps: S1. Soak the aramid fabric in a 10% potassium hydroxide solution to remove the oil on the fabric surface, then wash and dry it. The dried fabric is plasma treated with a power of 300 W and a treatment time of 30 s. A xylene solution containing 10% diisopropylbenzene peroxide is coated on the fabric surface with a coating amount of 75 g / m 2 , drying to obtain the surface-treated fabric; S2, stirring and dispersing the modified iron-silicon-chromium powder, fumed silica, vinyl silicone oil and hydrogen-containing silicone oil according to the above proportions to obtain microwave-absorbing silicone oil; S3, fixing the surface-treated fabric obtained in step S1 in the mold cavity, heating the microwave-absorbing silicone oil in step S2 to a viscosity lower than 1000 mPa·s, injecting the heated microwave-absorbing silicone oil to fill the mold, and heating to form the fabric. The heating temperature is 150° C. and the heating forming time is 30 min to obtain the tear-resistant microwave-absorbing edge sealing strip.

[0042] Example 5 A tear-resistant wave-absorbing edge-sealing strip is basically the same as that of Example 4, except that the mass ratio of aramid fabric to absorbing silicone oil in the tear-resistant wave-absorbing edge-sealing strip is 1:40; and in the preparation process of the tear-resistant wave-absorbing edge-sealing strip, the plasma treatment time of the aramid fabric in step S2 is 40 s.

[0043] Example 6 A tear-resistant wave-absorbing edge-sealing strip is basically the same as Example 4, except that the mass ratio of aramid fabric to absorbing silicone oil in the tear-resistant wave-absorbing edge-sealing strip is 1:25; and in the preparation process of the tear-resistant wave-absorbing edge-sealing strip, the plasma treatment time of the aramid fabric in step S2 is 60 s.

[0044] Comparative Example 1 A wave-absorbing edge-sealing rubber strip is basically the same as that of Example 1, except that, during the preparation of the wave-absorbing edge-sealing rubber strip, the nylon fabric is not subjected to plasma treatment in step S2.

[0045] Comparative Example 2 A wave-absorbing edge-sealing strip is basically the same as Example 1, except that, in the process of modifying the carbonyl iron powder, the amount of vinyl triethoxysilane added is 0 parts.

[0046] Comparative Example 3 A wave-absorbing edge-sealing rubber strip is basically the same as that of Example 4, except that the wave-absorbing edge-sealing rubber strip does not contain aramid fabric.

[0047] The wave-absorbing edge-sealing rubber strip comprises wave-absorbing silicone oil, wherein the wave-absorbing silicone oil comprises the following raw materials by mass fraction: 100 parts of modified iron-silicon-chromium powder, 20 parts of phenyl vinyl silicone oil with a viscosity of 1000 Pa·s, 20 parts of phenyl hydrogen silicone oil with a hydrogen content of 1%, and 10 parts of fumed silica. The modified iron silicon chromium powder is prepared by the following steps: adding 100 parts of iron silicon chromium powder to 500 parts of anhydrous ethanol, stirring at a speed of 600 rpm, adding 3%wt of methacryloxytriethoxysilane, treating for 300 minutes, and drying after the treatment to obtain the modified iron silicon chromium powder.

[0048] The wave-absorbing edge-sealing strip is prepared by the following steps: S1. Stir and disperse the modified iron-silicon-chromium powder, fumed silica, vinyl silicone oil and hydrogen-containing silicone oil according to the above proportions to obtain microwave-absorbing silicone oil; S2. Add an amount of dicumyl peroxide equal to that used in Example 4 to the absorbing silicone oil in step S1, disperse evenly and heat until the viscosity is lower than 1000 mPa·s, inject the heated absorbing silicone oil to fill the mold, heat and form at a heating temperature of 150° C. for 30 min to obtain the tear-resistant absorbing edge sealing strip.

[0049] Testing and analysis By comparing Examples 1-3 with Comparative Examples 1-2, the effects of surface treatment of absorbent powder with a silane coupling agent and plasma treatment of nylon fabric on the performance of the obtained absorbing silicone rubber were analyzed.

[0050] The mechanical properties were tested according to GB / T 528-2009 "Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber", the tear strength was tested according to GB / T 529-2009 "Determination of tear strength of vulcanized rubber or thermoplastic rubber", and the bonding strength between silicone rubber and fabric (nylon fabric) was tested according to GB / T 532-2008 "Determination of bonding strength between vulcanized rubber or thermoplastic rubber and fabric". The results are shown in Table 1.

[0051] Table 1 Performance test data of the wave-absorbing edge sealing strips prepared in Examples 1 to 3 and Comparative Examples 1 to 2

[0052] It can be seen from the data in Table 1 that the addition of silane coupling agent and plasma treatment of fabric can significantly improve the tensile strength, tear strength and bonding strength of the wave-absorbing edge sealing strip with the fabric.

[0053] By comparing Examples 4 to 6 with Comparative Example 3, the effect of the addition of aramid fabric on the flexibility, temperature resistance, environmental adaptability, bulk strength, tear strength and bonding performance of the wave-absorbing edge sealing strip was analyzed.

[0054] The mechanical properties after aging at room temperature and 200 °C hot air for 12 h were tested according to GB / T 528-2009 "Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber", the tear strength was tested according to GB / T 529-2009 "Determination of tear strength of vulcanized rubber or thermoplastic rubber", the bonding strength between silicone rubber and fabric (nylon fabric) was tested according to GB / T 532-2008 "Determination of bond strength between vulcanized rubber or thermoplastic rubber and fabric", and the brittle temperature of the absorbing edge sealing strip was tested according to GB / T 1682-2014 "Determination of low-temperature brittleness of vulcanized rubber - single specimen method", and the results are shown in Table 2.

[0055] Table 2 Performance test data of the wave-absorbing edge-sealing strips prepared in Examples 4 to 6 and Comparative Example 3

[0056] It can be seen from the data in Table 2 that the addition of aramid fabric has little effect on the flexibility, temperature resistance and environmental adaptability of the absorbing edge sealing strip. Compared with the absorbing silicone rubber, the tensile strength is increased by more than 2 times and the tear strength is increased by more than 3 times.

[0057] It should be noted that the order of step S1 and step S2 is not limited. In the embodiment of the present invention, the preparation method of the wave-absorbing edge sealing strip is described in detail by taking the order of step S1, step S2, and step S3 as an example.

[0058] On the one hand, the preparation method of the wave-absorbing sealing strip provided by the present invention adopts all the technical solutions of the wave-absorbing sealing strip embodiments provided by the present invention, and therefore has at least all the beneficial effects of the above embodiments, which will not be described one by one here. On the other hand, in the preparation method of the tear-resistant wave-absorbing sealing strip provided by the present invention, the active free radicals of the fabric after passing through the surface can attack the vinyl silicone oil and the vinyl groups in the modified absorbent, and the hydrogen ions in the hydrogen-containing silicone oil can transfer the free radicals on the surface of the fabric to cause the wave-absorbing silicone oil as a whole to undergo a cross-linking reaction, and the gas phase silica reinforces the cross-linked network as a whole. After the two are composited and heated and formed, not only the wave-absorbing sealing strip body has good strength, but also the interface bonding force between the rubber and the fabric skeleton can be improved. It should be understood that the above embodiments are only used to illustrate the content of the present invention and are not used to limit the scope of protection of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. A tear-resistant wave-absorbing edge sealing strip, characterized in that: The invention comprises the following components: fabric and microwave-absorbing silicone oil, wherein the mass ratio of the fabric to the microwave-absorbing silicone oil is 1:10-50, and the microwave-absorbing silicone oil comprises the following components: absorbent, vinyl silicone oil, hydrogen-containing silicone oil and fumed silica.

2. The tear-resistant wave-absorbing edge sealing strip according to claim 1, characterized in that: The fabric includes aramid fabric, polyester fabric, nylon fabric or acrylic fabric.

3. The tear-resistant wave-absorbing edge sealing strip according to claim 1, characterized in that: The wave-absorbing silicone oil comprises the following raw materials in parts by mass: 100 parts of absorbent, 20-50 parts of vinyl silicone oil, 20-50 parts of hydrogen-containing silicone oil, and 10-50 parts of fumed silica.

4. The tear-resistant wave-absorbing edge sealing strip according to claim 1, characterized in that: The absorbent includes carbonyl iron powder, iron silicon aluminum powder or iron silicon chromium powder.

5. The tear-resistant wave-absorbing edge sealing strip according to claim 1, characterized in that: The absorbent is a modified absorbent that has been surface treated with a silane coupling agent, and is mainly prepared by the following steps: dispersing the absorbent in an organic solvent, adding a silane coupling agent under stirring to perform surface treatment, and obtaining the modified absorbent.

6. The tear-resistant wave-absorbing edge sealing strip according to claim 5, characterized in that: The silane coupling agent is a methyl acrylate silane coupling agent or a silane coupling agent with a vinyl group; the mass of the silane coupling agent is 1% to 10% of the mass of the absorbent.

7. The tear-resistant wave-absorbing edge sealing strip according to claim 1, characterized in that: The viscosity of the vinyl silicone oil is 500-5000 Pa·s; the hydrogen content of the hydrogen-containing silicone oil is ≥0.5%.

8. The tear-resistant wave-absorbing edge sealing strip according to claim 7, characterized in that: The vinyl silicone oil includes phenyl vinyl silicone oil, linear vinyl silicone oil or branched vinyl silicone oil; the hydrogen-containing silicone oil includes phenyl hydrogen-containing silicone oil or methyl hydrogen-containing silicone oil.

9. A method for preparing the tear-resistant wave-absorbing edge sealing strip according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, soaking the fabric in alkali solution, then washing and drying, subjecting the dried fabric to plasma treatment, coating the surface of the fabric with a xylene solution containing an initiator, and drying to obtain the surface-treated fabric; S2, stirring and dispersing the absorbent, fumed silica, vinyl silicone oil and hydrogen-containing silicone oil to obtain microwave absorbing silicone oil; S3, fixing the surface treated fabric obtained in step S1 in a mold cavity, injecting the heated microwave-absorbing silicone oil obtained in step S2 to fill the mold, heating and molding, and obtaining the tear-resistant microwave-absorbing edge-sealing strip.

10. The method for preparing the tear-resistant wave-absorbing edge sealing strip according to claim 9, characterized in that: The initiator in step S1 is an organic peroxide; the concentration of the initiator in the xylene solution in step S1 is 5% to 20%; the coating amount in step S1 is 50 to 100 g / m 2 ; Before injection, the absorbing silicone oil described in step S2 is heated to a viscosity lower than 1000 mPa·s.

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