Resin wave absorption paint and preparation method thereof

A technology of wave-absorbing paint and resin, applied in epoxy resin paint, radiation-absorbing paint, coating, etc., can solve the problems of poor wave-absorbing performance of wave-absorbing paint, limited application range, narrow frequency band, etc. The effect of uneven and easy to agglomerate, low cost and wide absorption frequency band

Active Publication Date: 2017-07-25
SHANDONG OBO NEW MATERIAL CO LTD
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  • Description
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Problems solved by technology

[0005] In the research of many microwave-absorbing materials, microwave-absorbing coatings have received widespread attention from researchers in the field due to their wide application range and flexible application forms. The absorbing agents in the prior art mainly include ferrite absorbing materials, carbon fiber structure absorbing materials, nano absorbing materials, chiral absorbing materials, polycrystalline iron fiber absorbing materials and conductive polymer absorbing materials, etc. , but these absorbing materials still have many shortcomings such as narrow frequency band, low efficiency, and high density, and their application range is limited to a certain extent, and the absorbing performance of the absorbing coating made from them is not good

Method used

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  • Resin wave absorption paint and preparation method thereof

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preparation example Construction

[0074] The present invention also provides a preparation method of resin wave-absorbing coating, comprising the following steps:

[0075] A) after mixing graphene oxide and ferric oxide for the first time, obtain the composite material of graphene and ferric oxide;

[0076]B) After mixing the composite material of graphene and ferroferric oxide obtained in the above steps, resin, dispersant, anti-sedimentation agent and solvent, the resin wave-absorbing coating is obtained.

[0077] In the present invention, the selection and composition of raw materials required in the above-mentioned preparation process, as well as the corresponding optimization principles, can correspond to the selection and composition of the corresponding raw materials in the aforementioned resin wave-absorbing coating, as well as the corresponding optimization principles, and will not be repeated here Let me repeat them one by one.

[0078] In the present invention, firstly, the composite material of gr...

Embodiment 1

[0127] Graphene / Ferric Oxide Composite

[0128]1. Prepare a graphene oxide aqueous solution, and obtain a 0.1mg / ml graphene oxide dispersion solution after ultrasonic dispersion treatment; then prepare a ferrous sulfate aqueous solution with a concentration of 0.2mol / L;

[0129] 2. Heat the graphene oxide dispersion solution in step 1 to 50°C and continue ultrasonication for 30 minutes, slowly add the ferrous sulfate aqueous solution to the graphene oxide dispersion solution at a rate of 5ml / min to obtain a precursor mixed solution;

[0130] 3. Heat the precursor mixed solution in step 2 to 90°C and continue ultrasonication for 30 minutes, add 30ml of 0.1mol / L sodium hydroxide aqueous solution, and adjust the pH of the system to 10;

[0131] 4. After the reaction system was kept at 90°C and the ultrasonic reaction was continued for 120 minutes, the reaction product was obtained, and after magnetic separation several times, it was vacuum-dried at 60°C for 8 hours, and the black...

Embodiment 2

[0138] In terms of weight percentage, first add 20.7% xylene and 34.5% graphene / iron tetroxide composite material and mix and ultrasonically stir for 30 minutes, then add 0.5% polyvinylpyrrolidone and mix and stir for 10 minutes at a speed of 300r / min; 10.3% xylene and 27.6% epoxy resin DY128 medium-speed ultrasonic dispersion, then cast 5% carbon black, 0.5% MONORAL 3300 for 1500r / min high-speed dispersion, add 0.4% phthalate, then 900r / min low-speed dispersion, and then filter, paint and filter, blend and defoam and pack to get the finished product.

[0139] The application performance test of the wave-absorbing coating prepared in Example 2 of the present invention was carried out.

[0140] see figure 2 , figure 2 The section result diagram of the coating when the wave-absorbing coating prepared for the present invention is used. Depend on figure 2 It can be seen that the graphene / ferroferric oxide is densely arranged at the cross-section, showing a sheet state, and...

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Abstract

The invention provides resin wave absorption paint, which is prepared from resin, graphene and ferroferric oxide compounded material, dispersing agents, anti-settling agents and solvents. The paint is characterized in that the addition mode of graphene materials in the resin wave absorption paint is creatively changed; firstly, the graphene is compounded with a hard material of ferroferric oxide in the paint to obtain the graphene and ferroferric oxide compounded material; then, the graphene and ferroferric oxide compounding material is combined with the other ingredients to obtain the resin wave absorption paint. The graphene dispersing problem can be better solved; the complete realization of the excellent performance is ensured; the problem of mixing nonuniformity of flexible graphene materials in a paint system is solved; in addition, the uniform dispersion of ferroferric oxide nanometer particles on the surface of the graphene can be realized; the performance is better achieved; more importantly, the specific ingredients are matched to be used, so that the prepared resin wave absorption paint has the advantages of thin film layer, high intensity, strong wave absorption capability, wide wave absorption frequency band and low cost; wide application prospects are realized.

Description

technical field [0001] The invention belongs to the technical field of wave-absorbing paint, and relates to a wave-absorbing paint and a preparation method thereof, in particular to a wave-absorbing paint containing a graphene / ferric oxide composite material and a preparation method thereof. Background technique [0002] Electromagnetic pollution refers to natural and artificial interference of various electromagnetic waves and harmful electromagnetic radiation. Due to the development of radio, television, and microwave technology, the power of radio frequency equipment has doubled, and the electromagnetic radiation on the ground has increased significantly, which has reached the level of direct threat to human health. The alternating changes of electric and magnetic fields produce electromagnetic waves. The phenomenon of electromagnetic waves launching or sinking into the air is called electromagnetic radiation. Excessive electromagnetic radiation causes electromagnetic po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D163/00C09D5/32C09D7/12
CPCC08K2201/003C08K2201/011C08K2201/014C09D1/00C09D5/32C09D7/61C09D7/63C09D7/65C09D163/00C08L87/00C08K5/12C08K9/00C08K7/00C08K3/04C08K2003/2275
Inventor 赵永彬张在忠李伟铭刘海波
Owner SHANDONG OBO NEW MATERIAL CO LTD
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