Wave-absorbing adhesive film and preparation method thereof

A technology of adhesive film and adhesive film layer, which is applied in the field of wave-absorbing materials, can solve the problems of complex wave-absorbing film process and poor matrix strength of wave-absorbing film, so as to reduce the number of processes, reduce the difficulty of operation, and enhance the bonding performance Effect

Pending Publication Date: 2022-03-01
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the process of preparing the wave-absorbing adhesive film by the existing method is relatively complicated, additional adhesives need to be applied during

Method used

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  • Wave-absorbing adhesive film and preparation method thereof
  • Wave-absorbing adhesive film and preparation method thereof
  • Wave-absorbing adhesive film and preparation method thereof

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0060] Example 1

[0061] The present embodiment is prepared by the following method, and the prepared absorbing film structure is figure 1 As shown: including the absorbing layer 1, the reinforcing layer 2, the film layer 3, the backing 4. Specific process figure 2 , image 3 and Figure 4 Indicated.

[0062] (1) 3180 epoxy resin is plasticized in the open mill for 5 minutes, and the opening mill is set to 50 ° C, the front roller speed is set to 18 rpm, and the rear roller speed is set to 12 rpm;

[0063] (2) In the translator, a glass fiber textile / 3180 resin prepreg and a PET release film (release layer) of the PET release layer is placed relatively placed in the release film in the translator. Add the 3180 resin matrix of the mold in step (1), the translator temperature is set to 80 ° C, the translator roller speed is 2 m / min, and the two roller gap is set to 0.35 mm, and the roll is delayed with a backing, a film layer. , Enhanced intermediates; specific processes such as ...

Example Embodiment

[0067] Example 2

[0068] This embodiment is prepared by the following method for preparing a suction film film

[0069] (1) Put 3180 epoxy resin in the open mill for 10 minutes, the opening mill is set to 100 ° C, the front roller speed is provided to 16 rpm, and the rear roller speed is set to 10 rpm;

[0070] (2) A carbon fiber textile / 3180 resin prepreg with a PET release layer is loaded in the translator, and the prepreg is opposed to the release film, in which the step (1) is added therein. The 3180 resin matrix of plastic is placed, the translator temperature is set to 70 ° C, the calendering roller speed is 7 m / min, and the two roll gaps are set to 0.38 mm, and the intermediates with backing, film layer, and enhanced layers. ;

[0071] (3) Mix the absorbing slurry uniform in the reactor containing the stirring paddle, the specific content is:

[0072] Methanol 60%, ZH-40 magnetic absorbent 33%, 3180 resin 6%, 1% sodium carbonate;

[0073] (4) Place the intermediate bod...

Example Embodiment

[0074] Example 3

[0075] This embodiment is prepared by the following method for preparing a suction film film

[0076] (1) Put 3180 epoxy resin in the open mill for 40 minutes, the open mill is set to 20 ° C, the front roller speed is set to 16 rpm, and the rear roller speed is set to 10 rpm;

[0077] (2) Aramid fiber textile / 3180 resin prepreg with a PET release layer is contained in the translator, and the prefiltration is relatively placed on the release film, and the step is added therein (1 3180 resin matrix in medium plastic refining, the translator temperature is set to 100 ° C, the translator roller speed is 5 m / min, and the two roller gap is set to 0.35 mm, and the roll is delayed with the backing, the film layer, the enhanced layer. Intermediate;

[0078] (3) Mix the absorbing slurry uniform in the reactor containing the stirring paddle, the specific content is:

[0079] 50% of toluene, conductive carbon black 22.5%, 3180 resin 22.5%, 5% of fatty alcohol polyoxyeth...

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Abstract

The invention relates to the technical field of wave-absorbing materials, in particular to a wave-absorbing adhesive film and a preparation method thereof.The wave-absorbing adhesive film comprises at least one of a reinforcing layer or an adhesive film layer, a wave-absorbing layer and a backing; the wave-absorbing layer and the backing are respectively arranged on the outermost side of the wave-absorbing adhesive film, and the wave-absorbing layer is a film formed by mixing a wave-absorbing material and a resin matrix; the wave-absorbing adhesive film is prepared by using a tape casting method, and the reinforcing layer, the adhesive film layer and the backing are arranged on one side of the wave-absorbing layer, so that the adhesive property of the tape-casting wave-absorbing adhesive film can be enhanced, the tape-casting wave-absorbing adhesive film is prevented from being broken during paving, the working efficiency is improved, and meanwhile, the wave-absorbing layer is compounded with the resin layer in the tape casting process, so that the adhesive property of the wave-absorbing layer is improved. And the time for compounding the two components before construction is saved, the operation difficulty is reduced, and the number of procedures is reduced.

Description

technical field [0001] The invention relates to the technical field of wave-absorbing materials, in particular to a wave-absorbing adhesive film and a preparation method thereof. Background technique [0002] Absorbing materials refer to a class of materials that can absorb and attenuate incident electromagnetic waves, convert their electromagnetic energy into heat energy and dissipate them, or make electromagnetic waves disappear due to interference. The wave-absorbing adhesive film material is one of the most widely used resin-based wave-absorbing composite materials at present. Because of its advantages such as simple covering molding method and co-curing with structural composite materials, it has been used in the stealth construction of various products. At present, the preparation methods of microwave-absorbing adhesive film that are widely used include dry process and wet process. The wet process is mostly tape-casting process. Usually, it is necessary to disperse the...

Claims

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Application Information

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IPC IPC(8): C09J7/21C09D5/32C09D163/02C09D163/04
CPCC09J7/21C09D5/32C09D163/00C09J2400/143C09J2301/16C09J2400/263C09J2400/10C09J2477/006C08L63/04C08K3/18C08L3/04C08K7/06
Inventor 李旻吕通李阳庞程宫元勋
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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