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Self-cleaning microwave absorption paint and uses thereof

A microwave absorption and self-cleaning technology, applied in radiation-absorbing coatings, epoxy coatings, polyurea/polyurethane coatings, etc., can solve the problem of polluted darkroom air environment, inability to use complex surface structure objects, without considering radio wave reflection and transmission and other problems, to achieve the effect of increasing surface roughness, low rolling angle, and superhydrophobic rolling angle

Active Publication Date: 2011-11-02
南京南大波平电子信息有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods cannot be used for objects with complex surface structures such as microwave absorbing pyramids, etc.
In addition, Chinese published patent Nos. CN1355264 and CN101205439 all mentioned that coatings can be used to achieve superhydrophobic self-cleaning effect, but these coatings are only used on the outer surface of buildings, and do not consider the problem of reflection and transmission of radio waves. Some raw materials will also be thermally decomposed when heated and decomposed by microwave radiation, such as melamine resin releasing formaldehyde, polluting the air environment in the darkroom

Method used

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  • Self-cleaning microwave absorption paint and uses thereof
  • Self-cleaning microwave absorption paint and uses thereof
  • Self-cleaning microwave absorption paint and uses thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 20g of butyl acetate in a container, then add 20g of xylene, 1.6g of 10um ceramic microspheres and 0.4g of 30micron hollow glass microspheres in sequence, and disperse for 20-40min in a high-speed disperser under the condition of 100-300rpm. Uniform dispersion. Then add 6g of 20nm lipophilic silica, 4g of KH-550, adjust the rotation speed to 3000-5000rpm, and disperse for 30-90min. Add 6g of caking tree, 24g of acrylic acid resin, 20g of xylene, 0.03g of diisobutyltin dilaurate and 0.03g of triethylenediamine in turn, disperse at 400-600rpm for 20-40min, filter and spray with an air spray gun Based on the BPUFA050 and Pyramid absorbing materials, the self-cleaning absorbing material SCBPUFA050 is made. Use the SURFTENS Universal contact angle measuring instrument to measure the contact angle and rolling angle of SCBPUFA050 surface as figure 1 , figure 2 shown.

Embodiment 2

[0034] Weigh 40g of xylene in a container, then add 7g of 20nm lipophilic silica, 9g of KH-560, 1g of triethyl orthoformate, 11g of silicone resin DC840, 2g of epoxy resin E-21 resin, and adjust the speed gradually Increase to 3000-5000rpm, disperse for 30-90min to form a uniform dispersion. Then add 8g of binder resin, 13g of styrene-acrylic resin, 25g of xylene, 2.5g of Bayer N3390, 0.05g of diisobutyltin dilaurate and 0.05g of triethylenediamine, and disperse at 400-600rpm for 20-40min. After filtering impurities, use an air spray gun to spray on BPUFA100, BPUFA150, BPUFA200 pyramid absorbing materials to make SCBPUFA100, SCBPUFA150, SCBPUFA200 self-cleaning absorbing materials.

Embodiment 3

[0036] Weigh 40g of xylene into a container, then add 7.5g of 20nm lipophilic silica, 10g of KH-560, 1g of triethyl orthoformate, 5g of silicone resin DC840, 5g of bonding resin, and adjust the speed to 3000 At -5000rpm, disperse for 30-90min to form a uniform dispersion. Then add 10g of acrylic resin, 35g of xylene, 2.5g of alicyclic amine curing agent 5618, 0.05g of diisobutyltin dilaurate and 0.05g of triethanolamine, disperse at 400-600rpm for 20-40min, filter impurities and use The air spray gun is sprayed on the BPUFA300, BPUFA500, BPUFA700 pyramid absorbing materials to make self-cleaning absorbing materials SCBPUFA300, SCBUFA500, SCBPUFA700.

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Abstract

The invention relates to a self-cleaning microwave absorption paint and uses thereof. According to the invention, a urethane foam pyramidal material is coated with a layer of paint to form a micron-nano composite structure layer which has an angle of contact larger than 150 degrees and an angle of roll smaller than 5 degrees. The paint consists of a nano material, a micrometer material, a coupling agent, bonding resin, a base material, a curing agent, an auxiliary and an organic solvent. By means of the microwave absorption paint provided by the invention under a fireproof spraying mode, water beads can roll off a pyramidal surface rapidly with ashes contained in the water beads, thus achieving the effect of self cleaning, reducing the ashes in a microwave darkroom and accordingly meeting the special requirement of a cleaning-type dark room on maintaining high long-term cleanness. The self-cleaning microwave absorption paint provides a new way for implementing the cleaning-type dark room.

Description

technical field [0001] The invention relates to a self-cleaning microwave-absorbing coating and its application, mainly an important material used in a clean-type anechoic chamber, which provides a self-cleaning test environment with no reflection free space. Background technique [0002] Microwave absorbing materials (absorbing materials) have been produced as early as the 1970s. At present, soft polyurethane foam is used as the matrix at home and abroad, cut into pyramid shapes, and made by dipping and drying chemical coatings, and then Installed in a dark room with adhesive. [0003] Due to the aging factor of the base material itself, the polyurethane foam absorbing material absorbs a large amount of dust with the increase of use time and the residual static electricity on the surface, which cannot meet the requirements of the clean room for air cleanliness. At present, the general clean room All have air filtration devices, and microwave anechoic chambers generally hav...

Claims

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Application Information

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IPC IPC(8): C09D127/12C09D133/04C09D133/00C09D175/04C09D163/00C09D5/32
Inventor 胡益民汪洪张洋柳海莉
Owner 南京南大波平电子信息有限公司
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