A kind of graphene type anti-radiation coating

A technology of anti-radiation coatings and graphene, applied in the field of anti-radiation coatings, can solve the problems of increased coating costs, more graphene, and difficult large-scale application of products, and achieve reliable performance

Active Publication Date: 2018-07-06
上海虹庐雅邦新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the radiation protection effect of the protective film prepared by this method is relatively limited, mainly because: graphene has a large tendency to agglomerate in the coating system and cannot effectively disperse, which also affects the radiation protection function of its protective film ; Due to the surface tension between the water-soluble polyurethane emulsion system and the PET film, the coating is not easy to disperse and spread evenly on the PET film, which is not conducive to its film formation
[0008] CN 102020899 A discloses a composite coating electromagnetic shielding coating and a composite coating electromagnetic shielding material prepared therefrom. The composite coating electromagnetic shielding coating includes a conductive layer coating with a reflection function and a wave-absorbing layer coating with an absorption function. Since conductive metal powder is added to the coating of the conductive layer, the coating of the wave-absorbing layer also contains metal powder, and the metal powder is easily oxidized. Therefore, the radiation protection effect of the coating is less stable over time, and the radiation protection effect will disappear.
[0009] CN 103897446 A discloses that graphene is used as a basic component, and graphene is combined with inorganic coatings, but this method uses more graphene, thereby increasing the cost of coatings
[0010] There are also some methods, which are to modify the graphene first, and then use the modified graphene in the coating, but this will greatly increase the cost of the coating, making the product difficult to apply on a large scale

Method used

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  • A kind of graphene type anti-radiation coating
  • A kind of graphene type anti-radiation coating
  • A kind of graphene type anti-radiation coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation of graphene type anti-radiation coating

[0036] 1. Take resin, wave-absorbing filler, graphene, surfactant and solvent by weight ratio in Table 1;

[0037] 2. Mix the above materials to obtain a mixed solution, and stir in a double planetary mixer for 50-60 minutes, so that the graphene is evenly coated on the outer periphery of the wave-absorbing filler;

[0038] 3. The mixed solution obtained in step 2 is filtered, and vacuum defoaming is made into a graphene-type anti-radiation coating.

[0039] In this example,

[0040] The resin is polyurethane resin R-961;

[0041] The wave-absorbing filler is made of wave-absorbing particles, and the wave-absorbing particles are made of FeSiAl wave-absorbing particles;

[0042] Graphene is graphene powder with 4-8 carbon layers;

[0043] The surfactant is BYK420;

[0044] The solvent is water.

[0045] Table 1

[0046] serial number

Paint grade

Absorbing filler

Graphene powder

resin

...

Embodiment 2

[0051] Preparation of graphene type anti-radiation coating

[0052] 1. Take resin, wave-absorbing filler, surface treatment agent, surfactant and solvent according to the weight ratio in Table 3;

[0053] 2. Put the wave-absorbing filler in the vibrating sieve; the vibrating sieve vibrates at a frequency of 70 Hz, and drip the surface treatment agent while vibrating; mix the wave-absorbing filler and the surface treatment agent evenly, and then place it in an oven at 120 degrees to bake Bake for 1 hour to obtain the wave-absorbing stuffing with coating;

[0054] 3. Mix the coated wave-absorbing filler, resin, surfactant and solvent obtained in step 2, and stir in a double planetary mixer for 50-60 minutes to obtain a uniformly mixed mixture;

[0055] 4. The mixed solution that step 3 is obtained is filtered, and vacuum defoaming is made into graphene type anti-radiation coating.

[0056] In this example,

[0057] The resin is polyurethane resin R-961;

[0058] The wave-absor...

Embodiment 3

[0068] Preparation of graphene type anti-radiation coating

[0069] 1. Take resin, wave-absorbing filler, surface treatment agent, graphene, surfactant and solvent by weight ratio in Table 5;

[0070] 2. First mix the graphene and the surface treatment agent evenly, then place the wave-absorbing filler in the vibrating sieve, the vibrating sieve vibrates at a frequency of 70 Hz, and drop the surface treatment agent mixed with graphene while vibrating; make the wave-absorbing filler Mix evenly with the surface treatment agent doped with graphene, then place in an oven and bake at 120 degrees for 1 hour to obtain a wave-absorbing filler with a coating;

[0071] 3. Mix the coated wave-absorbing filler, resin, surfactant and solvent obtained in step 2, and stir in a double planetary mixer for 50-60 minutes to obtain a uniformly mixed mixture;

[0072] 4. The mixed solution that step 3 is obtained is filtered, and vacuum defoaming is made into graphene type anti-radiation coating....

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PUM

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Abstract

The invention discloses a graphene type radiation protective coating. The coating comprises conductive packing, wave-absorbing packing and graphene. The radiation protective coating disclosed by the invention can serve as a radiation protective coating of various types of electronic equipment, the radiation protective coating, inner primer, putty and finish coating of a building wall body, and the like, so as to achieve the effects of electromagnetic shielding and electromagnetic compatibility; the coating is in a liquid state before curing and has fluidity; the viscosities of the coating are different according to the difference of materials, properties and production processes of the products; after the coating is cured completely, a layer of continuous material with a certain thickness is formed; after the coating is cured, the effects of electromagnetic shielding, resisting interference, and electromagnetic isolating can be achieved; in addition, the radiation protective coating disclosed by the invention has the effects of preventing water, preventing moisture, resisting oxidation, preventing corrosion, preventing earthquake and the like, and is an excellent radiation protective coating with reliable performance for buildings and electronic products.

Description

technical field [0001] The invention relates to the technical field of anti-radiation coatings. More specifically, it relates to a graphene type anti-radiation coating. Background technique [0002] With the rapid development of the electronic industry and the popularization of electronic products, another new "pollution" has emerged in the society, which is electromagnetic waves of different frequencies reflected by tens of thousands of electronic and electrical equipment during work. These electromagnetic waves will cause cross-interference to various electronic and electrical equipment, communication and transmission lines that are working nearby, resulting in phenomena such as out-of-control of computer-controlled machines and abnormal operation of communication equipment, which are extremely harmful. [0003] With the increasing development of polymer materials, engineering plastic parts are widely used in the electronics industry. However, since plastics have no shie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D7/61C09D5/34C09D5/08
CPCC08K3/04C08K3/08C08K3/18C08K3/34C08K9/10C08K2003/085C08K2003/0862C09D5/08C09D5/34C09D7/62C09D175/04
Inventor 刘伟德
Owner 上海虹庐雅邦新材料技术有限公司
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