Anti-corrosion, anti-wear and high-temperature-resistant electromagnetic shield powdery coating and preparation method of same
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An electromagnetic shielding and powder coating technology, applied in powder coatings, anti-corrosion coatings, fire-proof coatings, etc., can solve the problems of high density, low strength, corrosion resistance, wear resistance and high temperature resistance, and achieve dielectric constant and The effect of small dielectric damage, high strength and good wear resistance
Inactive Publication Date: 2018-05-15
成英
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Chinese patent CN103254736B has prepared a powder coating with acid-resistant self-healing function with epoxy resin, curing agent, polyaniline, pigments and fillers and additiv
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[0027] The invention also discloses a method for preparing an electromagnetic shielding powder coating resistant to corrosion, wear and high temperature, and the specific steps are as follows:
[0028] Step 1: Weighing the raw materials of each component according to the distribution ratio of the components, and mechanically mixing the raw materials of each component;
[0029] Step 2: Add the uniformly mixed raw materials of each component into a twin-screw extruder, extrude at 80°C-200°C, press into tablets, pulverize, and sieve to obtain an electromagnetic shielding powder coating that is corrosion-resistant, wear-resistant, and high-temperature resistant.
Embodiment 1
[0032]
[0033] Specific steps are as follows:
[0034] Step S11: weighing each component raw material according to the component distribution ratio, and mechanically mixing each component raw material;
[0035] Step S12: Put the uniformly mixed raw materials of each component into a twin-screw extruder, extrude at 80°C, press into tablets, pulverize, and sieve to obtain a corrosion-resistant, wear-resistant, and high-temperature resistant electromagnetic shielding powder coating.
Embodiment 2
[0037]
[0038] Step S21: weighing each component raw material according to the component distribution ratio, and mechanically mixing each component raw material;
[0039] Step S22: Add the homogeneously mixed raw materials of each component into a twin-screw extruder, extrude at 200°C, press into tablets, pulverize, and sieve to obtain a corrosion-resistant, wear-resistant, and high-temperature resistant electromagnetic shielding powder coating.
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Abstract
The invention relates to an anti-corrosion, anti-wear and high-temperature-resistant electromagnetic shield powdery coating and a preparation method of same, wherein the powdery coating is prepared from: 25-90 parts of a fluorosilicon material powder, 5-30 parts of hollow glass microbeads, 5-30 parts of polyaniline powder, 0-5 parts of a compatibilizer, 0-5 parts of a crosslinker, 0.1-1 part of aflatting agent, 0.1-1 part of a defoaming agent, 0.1-1 part of a brightening agent, and 0.1-1 part of a charging additive. The preparation method includes the steps of: according to the ratio, weighing the raw materials and uniformly mechanically mixing the raw materials, feeding the mixed raw materials into a twin-screw extruder to extrude the raw materials at 80-200 DEG C; and tabletting, pulverizing and sieving the product to obtain the anti-corrosion, anti-wear and high-temperature-resistant electromagnetic shield powdery coating. The material is good in anti-corrosion and anti-wear performances, is high-temperature-resistant, is high in strength and low in density, is low in dielectric constant and dielectric damage, can be extensively applied to the industrial fields such as weaponry, information technology and others requiring the anti-corrosion, anti-wear and high-temperature-resistant properties and electromagnetic shield.
Description
technical field [0001] The invention relates to the field of powder coating preparation, in particular to a corrosion-resistant, wear-resistant and high-temperature resistant electromagnetic shielding powder coating and a preparation method thereof. Background technique [0002] With the rapid development of weaponry and information industries, the requirements for equipment coating are getting higher and higher. The specific requirements are as follows: ①Good corrosion resistance, and the smoke caused by bullets or shells has certain corrosiveness; ②Good wear resistance: bullets Or the speed of the shell is very fast, which is easy to cause the wear of the ballistic or shell barrel; ③High temperature resistance: the firing temperature of the bullet or shell will not melt the coating of the shell barrel; ④Light density; ⑤The dielectric constant and dielectric loss are small, To meet the electromagnetic shielding requirements of new radars. [0003] Polyaniline has the advan...
Claims
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