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Preparation method of high temperature resistant wave-absorbing material

A wave-absorbing material and high-temperature-resistant technology, which is applied in the fields of enzyme/microbial biochemical treatment, biochemical fiber treatment, textiles and papermaking, etc., can solve problems such as low-temperature-resistant wave-absorbing performance, achieve excellent wave-absorbing performance, and improve absorption Wave performance, compatibility improvement effect

Inactive Publication Date: 2018-06-12
常州富思通管道有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a preparation method of a high-temperature-resistant microwave-absorbing material for the defects of high-temperature resistance and poor microwave-absorbing performance of the current common wave-absorbing materials during use

Method used

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  • Preparation method of high temperature resistant wave-absorbing material

Examples

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example 1

[0021] Mix deionized water, tetraethyl orthosilicate and absolute ethanol in a volume ratio of 2:5:3 and place them in a beaker and stir for 10 minutes. % hydrochloric acid, continue to mix and stir for 20 minutes to obtain a mixed solution, continue to put the mixed solution in an ultrasonic oscillator to vibrate for 35 minutes, and leave it to stand for 1 day after shaking to obtain a self-made silica sol, measure the polyimide resin and put it into a beaker Stir in the medium for 6 minutes, and heat up to 280°C to obtain a melt, then add peanut oil with a mass of 7% of the melt and yogurt with a mass of 0.7% of the melt to the melt, put it into a fermenter, and heat it at a temperature of 45°C Sealed and fermented for 9 days. After the fermentation, the fermented resin was obtained. The hexagonal boron nitride, aluminum oxide, silicon carbide and deionized water were mixed in a beaker according to the mass ratio of 1:1:1:2. In a water bath, mix and stir at a temperature of ...

example 2

[0023]Mix deionized water, tetraethyl orthosilicate and absolute ethanol in a volume ratio of 2:5:3 and place them in a beaker and stir for 11 minutes. % hydrochloric acid, continue to mix and stir for 25min to obtain a mixed solution, continue to put the mixed solution into an ultrasonic oscillator to vibrate for 40min, and leave it to stand for 1.5 days after shaking to obtain a self-made silica sol, measure the polyimide resin and put it into a beaker Stir in the medium for 7 minutes, and heat up to 290°C to obtain a melt, then add peanut oil with a mass of 7% of the melt and yogurt with a mass of 0.7% of the melt to the melt, put it into a fermenter, and heat it at a temperature of 50°C Sealed and fermented for 10 days. After the fermentation, the fermented resin was obtained. The hexagonal boron nitride, aluminum oxide, silicon carbide and deionized water were mixed in a beaker according to the mass ratio of 1:1:1:2. In a water bath, mix and stir at a temperature of 65°C ...

example 3

[0025] Mix deionized water, tetraethyl orthosilicate and absolute ethanol in a volume ratio of 2:5:3 and place them in a beaker and stir for 12 minutes. % hydrochloric acid, continue to mix and stir for 30 minutes to obtain a mixed solution, continue to put the mixed solution into an ultrasonic oscillator to vibrate for 45 minutes, and leave it to stand for 2 days after shaking to obtain a self-made silica sol, measure the polyimide resin and put it into a beaker Stir in the medium for 8 minutes, and heat up to 300°C to obtain a melt, then add peanut oil with a mass of 7% of the melt and yogurt with a mass of 0.7% of the melt to the melt, put it in a fermenter, and heat it at a temperature of 55°C Sealed and fermented for 11 days. After the fermentation, the fermented resin was obtained. The hexagonal boron nitride, aluminum oxide, silicon carbide and deionized water were mixed in a beaker according to the mass ratio of 1:1:1:2. In a water bath, mix and stir at a temperature o...

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Abstract

The invention relates to the technical field of preparation of wave-absorbing materials, in particular to a preparation method of a high temperature resistant wave-absorbing material. According to thepreparation method, the wave-absorbing material with the high temperature resistance and a good wave absorbing property is prepared by taking carbon fibers as a substrate, polyimide resin and siliconcarbide and the like as a fortifier, and silica sol and dextrin as a modifier, silica gel can effectively isolate preventing contact of oxygen in air from getting in contact with and carbon fibers inair, accordingly the high temperature resistance of the wave-absorbing material is improved, absorbing of electromagnetic waves can be achieved by the modified carbon fibers, microwave absorption ofthe wave-absorbing material is enhanced, meanwhile, through blending and fermentation of polyimide resin and plant oil and yoghourt, an ester group is stem-grafted on the surface of resin under self cross-linking effect of microbes, the compatibility of resin and carbon fibers is improved, silicon carbide, hexagonal boron nitride, dextrin and aluminum oxide are added continuously, the wave absorption performance of the wave-absorbing material can be improved, and therefore, the preparation method has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of preparation of wave-absorbing materials, in particular to a method for preparing high-temperature-resistant wave-absorbing materials. Background technique [0002] In recent years, with the continuous advancement of modern science and technology, a large number of electronic devices have entered daily life, and the influence of electromagnetic radiation is increasing day by day, which is reflected in various living environments. The deteriorating electromagnetic environment will not only interfere with the normal work of electronic instruments and equipment, but also affect human health. [0003] Microwave absorbing material, also known as microwave absorbing material, refers to a type of electromagnetic functional material that effectively absorbs incident electromagnetic waves, converts electromagnetic energy into heat energy and consumes it, or makes electromagnetic waves interfere and cancel, thereby ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/59D06M11/77D06M11/79D06M15/11D06M16/00D06M13/224D06M11/80D06M11/45D06M10/00D06M101/40
CPCD06M10/00D06M11/45D06M11/77D06M11/79D06M11/80D06M13/2246D06M15/11D06M15/59D06M16/003D06M2101/40
Inventor 刘芳伊杨亚生张建初
Owner 常州富思通管道有限公司
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