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Method for preparing oil-absorbing wave-absorbing composite material from wood fiber powder

A technology of wood fiber powder and composite material, applied in the field of wood fiber powder, can solve the problems of high density, inability to absorb oil, narrow absorption frequency band, etc., and achieve the effects of increasing surface area, enhancing wave absorption performance, and enhancing magnetic performance

Inactive Publication Date: 2020-01-21
刘丹丹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a wave-absorbing material, the disadvantages are high density, narrow wave-absorbing frequency band, and the defect of not being able to absorb oil.

Method used

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  • Method for preparing oil-absorbing wave-absorbing composite material from wood fiber powder

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Effect test

Embodiment 1

[0029] A method for preparing an oil-absorbing wave-absorbing composite material with wood fiber powder, characterized in that it comprises the following steps, and the following raw materials are calculated in parts by weight:

[0030] (1) Hydrothermal treatment method of wood fiber powder:

[0031] Add deionized water to 10 parts of hydrophobic wood fiber powder at a ratio of 1:40, seal it in the reactor, heat to 165°C, and react with hydrothermal treatment for 70 minutes, then cool, filter, wash with water for 3 times, and freeze-dry to obtain hydrothermally treated oil-absorbing wood fiber powder. fiber powder;

[0032] Among them, the preparation of hydrophobic wood fiber powder: mix 30 parts of ethyl orthosilicate, 50 parts of n-butanol and 130 parts of distilled water, add dropwise 22 parts of ammonia water with a concentration of 25% and stir until transparent, add 2 parts of wood fiber powder and stir for 4 hours Afterwards, wash with water, filter 3 times, and dry t...

Embodiment 2

[0040] A method for preparing an oil-absorbing wave-absorbing composite material with wood fiber powder, characterized in that it comprises the following steps, and the following raw materials are calculated in parts by weight:

[0041] (1) Hydrothermal treatment method of wood fiber powder:

[0042] Add deionized water to 20 parts of hydrophobic lignocellulosic powder at a ratio of 1:40, seal it in the reactor, heat to 175°C, react with hydrothermal treatment for 50 minutes, cool, filter, wash with water for 3 times, freeze-dry to obtain hydrothermally treated oil-absorbing wood fiber powder;

[0043] Among them, the preparation of hydrophobic wood fiber powder: mix 35 parts of ethyl orthosilicate, 60 parts of n-butanol and 150 parts of distilled water, add dropwise 25 parts of ammonia water with a concentration of 25% and stir until transparent, add 4 parts of wood fiber powder and stir for 5 hours Afterwards, wash with water, filter 5 times, and dry to obtain lignocellulos...

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Abstract

The invention discloses a method for preparing an oil-absorbing wave-absorbing composite material from wood fiber powder, which comprises the following steps: adding deionized water into hydrophobic wood fiber powder, sealing in a reaction kettle, heating, carrying out a hydrothermal treatment reaction, cooling, performing filtration, washing with water, and carrying out freeze drying to obtain oil-absorbing wood fiber powder subjected to hydrothermal treatment; adding pretreated carbon nanotubes and graphene oxide into ethanol, ultrasonically stirring, adding ferrous chloride and ferric chloride, heating and stirring in an oil bath, dropwise adding ammonia water to adjust the pH value, continuously stirring and reacting at a constant temperature, performing suction filtration, washing with water to be neutral, and drying to obtain a magnetic modified carbon nanotube-graphene composite material; and adding an ethylene glycol solution into the oil-absorbing wood fiber powder subjected to hydrothermal treatment, stirring and dispersing, adding ferric chloride, stirring to dissolve the ferric chloride, adding sodium acetate and polyethylene glycol, stirring, reacting in a high-pressure reaction kettle, cooling, performing magnetical separation, respectively washing a product with distilled water and an ethanol solution, and carrying out vacuum drying to obtain the oil-absorbing wave-absorbing composite material.

Description

technical field [0001] The invention belongs to the field of wood fiber powder, and in particular relates to a method for preparing oil-absorbing and wave-absorbing composite materials by using wood fiber powder. Background technique [0002] Lignocellulosic fiber is a kind of biomass energy material, which has a wide range of sources, abundant reserves and environmental friendliness. its surface [0003] Contains a large number of hydroxyl groups, providing active sites for other substances to react. A large number of interlaced superposition of fibers [0004] Form a three-dimensional space network structure, and composite materials with specific morphology can be synthesized by controlling the reaction conditions. with this [0005] At the same time, due to the dimensional stability and thermal stability of wood fibers, they are mostly used as the matrix of composite materials. [0006] Ferroferric oxide is a traditional wave-absorbing material, which not only has hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L71/02C08K13/02C08K3/22C08K3/04C09K3/32H05K9/00
CPCC08K2003/2275C08K2201/01C08K2201/011C08L97/02C09K3/32H05K9/0083C08L71/02C08K13/02C08K3/22C08K3/041C08K3/042
Inventor 刘丹丹
Owner 刘丹丹
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