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A graphene composite wave-absorbing polysulfide sealant

A composite technology of polysulfide sealant and graphene, applied in other chemical processes, chemical instruments and methods, etc., can solve problems such as gaps, and achieve the effect of improving low-frequency wave-absorbing performance

Active Publication Date: 2019-02-01
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The research on the above-mentioned wave-absorbing materials only studies the mechanical properties of the wave-absorbing materials, the heat-resistant air aging performance, etc., and the research on the wave-absorbing ability of the wave-absorbing materials is not involved. There is still a big gap

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  • A graphene composite wave-absorbing polysulfide sealant
  • A graphene composite wave-absorbing polysulfide sealant
  • A graphene composite wave-absorbing polysulfide sealant

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Embodiment Construction

[0023] Below in conjunction with embodiment technical solution of the present invention will be described in further detail:

[0024] The components and amounts of the sealing agent in the implementation of the technical solution of the present invention are shown in Table 1. Each serial number in Table 1 represents an embodiment of a sealant, wherein serial number 6# is a comparative example. The performance test values ​​of the embodiments are shown in Table 2. Taking the implementation of serial number 1# in Table 1 as an example, the steps of the preparation method of the sealant are as follows:

[0025] (1) Preparation of base paste: Weigh 100 parts of liquid polysulfide rubber, 0.1 part of graphene, 150 parts of carbonyl iron powder, and 3.0 parts of epoxy resin E-44, mix them by hand, and mix them 5 times with a three-roll mill well mixed;

[0026] (2) Preparation of vulcanized paste: after weighing 100 parts of manganese dioxide, 120 parts of dibutyl phthalate, 1.0 ...

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Abstract

The invention relates to a compound wave-absorbing polysulfide sealant prepared from graphene. The compound wave-absorbing polysulfide sealant is prepared from two components, i.e., base paste and sulfidation paste, wherein the base paste is prepared from liquid polysulfide rubber, graphene, carbonyl iron powder and epoxy resin; the sulfidation paste is prepared from manganese dioxide, dibutyl phthalate, an accelerant DPG and stearic acid. The compound wave-absorbing polysulfide sealant prepared by dispersing the graphene in the base paste by means of ultrasonic treatment has good radar wave absorption performance at 1-18GHz, thus being a good radar wave-absorbing sealant.

Description

technical field [0001] The invention discloses a graphene composite wave-absorbing polysulfide sealant, which belongs to the technical field of polymer materials and its production. The sealant has good low-frequency wave-absorbing performance and is mainly used for stealth sealing of aircraft or ground military targets. Background technique [0002] At present, radar is still the most important and reliable equipment for detecting targets, and it is constantly developing in the direction of broadband. The main working frequency band is in the range of 0.5GHz-18GHz. This requires the target to have excellent wave-absorbing performance in a wide frequency range to achieve the purpose of interfering with radar detection. [0003] At present, the metal casing of aircraft or electronic equipment can absorb electromagnetic waves such as radar waves by using coating materials or patches, but the current research is mainly concentrated in the range of 2GHz-18GHz, and the research o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L81/04C08L63/00C08K13/02C08K3/04C08K3/18C08K3/22C08K5/12C08K5/09C09K3/00
CPCC08L81/04C09K3/00C08L63/00C08K13/02C08K3/04C08K3/18C08K2003/2262C08K5/12C08K5/09
Inventor 秦蓬波刘艺帆吴松华
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS