A kind of water-based electromagnetic shielding coating and preparation method thereof
An electromagnetic shielding coating, water-based technology, applied in conductive coatings, polyester coatings, anti-corrosion coatings, etc., can solve the problems of low adhesion of water-based coatings, people's health effects, easy to be oxidized, etc., to achieve good adhesion, excellent electromagnetic Shielding effect, low VOC effect
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[0108] The present invention is to improve the utility of the preparation method, the complete process route, and the reaction preferably also includes a post-processing step. The present invention is not particularly limited to the specific steps of the post-treatment, as described in the artificial processes well known to those skilled in the art, and those skilled in the art can choose and adjust and adjust according to actual production, product requirements, and quality requirements. The post-treatment preferably includes water washing and separation, more particularly preferably water washing to neutral and centrifugation.
[0109] The present invention then obtained the insertion graphite obtained by the above steps to expand the expansion graphite.
[0110] The present invention is not particularly limited to the temperature of the high temperature expansion, and those skilled in the art can be selected and adjusted according to actual production, product requirements, and...
Embodiment 1
[0155] High-conductive graphene
[0156] The raw materials were 1000 megadownload megadownload megadownload megadownload. 10 g of graphite was mixed with 50 g of dihydrocarbon and mixed with 50 g of sodium carbonate, and the mixture was mechanically stirred, and the reaction was reacted at room temperature for 20 hours, then 400 g of water was diluted, and centrifugally gave the inserted graphite. The inserted graphite is placed in a muffle furnace of 1000 ° C, and expands 30s. 5 g of expanded graphite was dispersed in 5LN-methylpyrrolidone, 800 W ultrasonic strip 8h, 300 rmp ball milling 2 h, centrifugal water was washed, resulting in high conductive graphene.
[0157] High conductive graphene prepared in Example 1 of the present invention is characterized.
[0158] See figure 1 , figure 1 A atomic force micrograph of high conductive graphene prepared for the first embodiment of the present invention.
[0159] Depend on figure 1 The atomic force microscope showed that the graphen...
Embodiment 2
[0174] 10 g of deionized water, 0.5 g of dispersing agent, 0.1 g defoamer, 0.1 g of graft, 0.1g wetting agent, 0.7 g of rheological modifier agent in the specified container, is preliminaryly mixed; 5g of titanium powder 5G rust-proof pigment, 10 g of crystalline stone powder, 1 g graphene (Example 1 Preparation) Dry powder and prior to preliminary mixing solutions were added to the ball mill, so that the material was 30 or less. The grinding slurry was poured into the specified container, and the deionized water 1 g, anti-laminosid 1 g, 0.5 g of film forming aid was added, and mixed mixture was mixed, and the mixture was mixed and mixed.
[0175] The 43 g of aqueous resin and 0.5 g of the attachment promoter were weighed at 500 rpm in the specified container for 10 min to mix well, resulting in a component B.
[0176] The A component and the B component were stirred at 500 rpm for 15 min to mix evenly. Stay for 30 min to obtain aqueous graphene electromagnetic shield coating.
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Abstract
Description
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