Multifunctional microwave absorption coating with self-cleaning and anti-icing function and preparation method thereof

A multi-functional coating and microwave absorption technology, which is applied to radiation-absorbing coatings, coatings, antifouling/underwater coatings, etc., can solve the problems of complex preparation methods and unstable performance of composite coatings, and meet the requirements of curing conditions The effect of easy control, good stability, and excellent superhydrophobic properties

Active Publication Date: 2019-04-16
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problems of complex preparation method and unstable performance of existing composite coatings with microwave absorption performance, self-cleaning function and anti-icing function, and provides a multi-functional coating with self-cleaning, anti-icing and microwave absorption functions and its preparation method

Method used

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  • Multifunctional microwave absorption coating with self-cleaning and anti-icing function and preparation method thereof
  • Multifunctional microwave absorption coating with self-cleaning and anti-icing function and preparation method thereof
  • Multifunctional microwave absorption coating with self-cleaning and anti-icing function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A method for preparing a self-cleaning, anti-icing and microwave-absorbing multifunctional coating, comprising the steps of:

[0045] The first step, preparation of low surface energy nanoparticle oily dispersion

[0046] a. Weigh 5g of NaOH and dissolve it in 92.5mL of deionized water to make a uniform solution for later use. Weigh 3.5g of ferrous chloride tetrahydrate (FeCl 2 4H 2 O) and 6.5 g ferric chloride hexahydrate (FeCl 3 ·6H 2 O), dissolved in deionized water, ultrasonically dispersed into a uniform solution and then transferred to the flask, when the temperature reached 65 ° C, the NaOH solution was added dropwise at a rate of 1 drop / second, and the reaction was carried out for 1.5 hours after the drop was completed. After the reaction was completed, it was cooled to room temperature, washed with deionized water ultrasonically for several times, and finally the magnetic particles were ultrasonically dispersed in water / ethanol solution (V 水 / V 乙醇 =1:4), ...

Embodiment 2

[0058] In the first step in the example 1, 3.5g ferrous chloride tetrahydrate (FeCl2 4H2O) is changed into 4.0g ferrous chloride tetrahydrate (FeCl2 4H2O). 3g of urea and 5g of cetyltrimethylammonium bromide were changed to 2g of urea and 4g of tetradecyltrimethylammonium bromide, and 35ml of n-octyltrimethoxysiloxane was changed to 45ml of n-octyltrimethoxy silicone.

[0059] All the other steps are the same as Example 1.

[0060] From image 3 It can be seen that the size of the core-shell structure Fe3O4 / H-SiO2 / CTAB nanoparticles decreases.

Embodiment 3

[0062] With the preparation of Fe3O4 / rGO / PANI magnetic particle / resin composite coating in the second step in the example 1, change the rGO dispersion liquid of 150ml into the rGO dispersion liquid of 200ml and the stable PANI dispersion liquid of the stick shape of 30ml into 20ml A stick-shaped stable dispersion of PANI. The content of Fe3O4 / rGO / PANI composite magnetic particles was changed from 15.0wt% to 20.0wt%. All the other steps are the same as Example 1.

[0063] From Figure 4 It can be seen that the coating with double-layer inclusion structure has excellent microwave absorption performance.

[0064] Figure 5 It is a weight loaded with 100g to pull the coating on the sandpaper, moving 10cm each time, and after 10 cycles with a total length of 100cm, the contact angle of the coating is still 168°, and the performance of the coating has not changed after cyclic friction, indicating that The coating has very good mechanical resistance. From Figure 5 It can be se...

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Abstract

The invention relates to a multifunctional microwave absorption coating with a self-cleaning and anti-icing function and belongs to the technical field of coatings. The coating can solve the problemsthat existing microwave absorption coatings are poor in wave absorption performance and cannot achieve a self-cleaning and anti-icing function. A preparation method of the multifunctional coating includes the following steps of separately synthesizing nano-particle oily dispersion liquid low in surface energy and a Fe3O4 / rGO / PANI / resin composite coating, spraying the Fe3O4 / rGO / PANI / resin compositecoating and the nano-particle oily dispersion liquid low in surface energy onto a substrate sequentially to obtain the microwave absorption coating with the self-cleaning and anti-icing function. Compared with a traditional microwave absorption coating, the multifunctional microwave absorption coating has more excellent absorption performance and excellent self-cleaning and anti-icing performance, can be widely controlled, and has a wide application prospect in both military and civil fields.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a multifunctional coating with self-cleaning, anti-icing and microwave absorption and a preparation method thereof. Background technique [0002] With the increasing role of stealth technology, microwave weapons, radar and electronic countermeasures in military struggles, the research and application of microwave absorbing materials has been paid more and more attention. On the modern battlefield, different types of aircraft and missiles use microwave absorbing materials to reduce their effective reflection surface by 90%, which greatly reduces the power of radar. Ground weapons such as tanks, armored vehicles, and artillery use wave-absorbing materials for stealth, so that enemy electronic reconnaissance, including satellite reconnaissance and ground electronic reconnaissance, cannot be effectively played. The development of broadband high-performance and light-weight thin-lay...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D179/02C09D5/16C09D5/32C09D7/61C09D7/65C08G73/02B05D1/02B05D3/02B05D5/00B05D5/08B05D7/14B05D7/24
CPCB05D1/02B05D3/0254B05D5/00B05D5/08B05D7/14B05D7/24C08G73/0266C08K2003/2275C08K2201/01C08K2201/011C08L2205/03C09D5/1662C09D5/1687C09D5/32C09D163/00C08L79/02C08L39/06C08K13/06C08K3/042C08K3/22
Inventor 孙友谊马艺冰周亚亚刘亚青
Owner ZHONGBEI UNIV
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