Electromagnetic shielding paint additive and preparation method thereof
An additive and shielding technology, applied in the field of electromagnetic shielding paint additives and their preparation, can solve problems such as poor leveling of electromagnetic shielding coatings, achieve good electromagnetic shielding efficiency, improve paint leveling, and enhance anti-rust function Effect
Inactive Publication Date: 2017-03-22
FOSHAN GAOMING DISTRICT MINGCHENG TOWN NEW ENERGYNEW MATERIAL IND TECH INNOVATION CENT
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Problems solved by technology
[0005] The present invention provides a coating additive capable of effectively shielding electromagnetic waves and a preparation method of the coating additive. The main problem it solves is the poor leveling of electromagnetic shielding coatings caused by the addition of electromagnetic shielding components. problem, but also can bring good electromagnetic shielding effect
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Embodiment Construction
[0036] The content of the present invention is further described below by way of examples.
[0037] 1. Preparation of organically modified bentonite
[0038] The preparation method of organically modified bentonite is as follows: immerse the bentonite in a vinyl silicone oil-n-hexane solution with a mass percentage of 16%, keep stirring at 38°C for 2h, then transfer it to a drying box, and dry it at 95°C 3h, and finally roasted at 570°C for 2h, and then cooled in the furnace after the roasting.
[0039] The mass ratio of bentonite to vinyl silicone oil-n-hexane solution is 1:4.4.
[0040] Considering that it is added as an additive in the paint, the smaller the particle size of the solid component in the additive is, the more delicate the film-forming effect of the paint will be. Therefore, in this embodiment, when the particle size of bentonite is controlled to be less than 10 μm, it can be obtained in actual use. Good film-forming effect.
[0041] 2. Prepare coating addit...
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Abstract
The invention discloses an electromagnetic shielding paint additive and a preparation method thereof. The electromagnetic shielding paint additive comprises a PMA solvent, organic modified bentonite, silica aerogel powder, nano conductive powder, an infiltration dispersing agent, a drying catalyst, a gloss enhancer, an anti-sedimentation agent, and an antirust agent; wherein the nano conductive powder is amorphous alloy powder with a particle size of 20 to 100 nm. Through the research on the mechanism of coating and film forming, a mixture of organic modified bentonite and silica aerogel powder is taken as the basic carrier of the additive, and the PMA solvent with a strong dissolving performance is taken as the basic solvent. The provided electromagnetic shielding paint additive can improve the leveling performance of paints, has a good electromagnetic shielding performance, can enhance the stability of organic paints at the same time, improves the stability of paints during the storage process and using process, and does not influence the performance of paints during the painting process.
Description
technical field [0001] The invention belongs to the field of paint additives, in particular to an electromagnetic shielding paint additive and a preparation method thereof. Background technique [0002] With the rapid development of the electronics industry and the information industry, communication equipment and various electronic products have widely covered all aspects of national life. Electronic and electrical equipment produces electromagnetic radiation in the process of use, which brings radiation pollution. At the same time, it is extremely susceptible to external electromagnetic infection, which seriously interferes and affects the operation of electronic and electrical equipment. At the same time, certain bands of electromagnetic waves generated by electronic and electrical equipment can also affect the human body, so it is necessary to take effective protective measures. At present, the electromagnetic energy radiated by electromagnetic waves is increasing at a ...
Claims
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IPC IPC(8): C09D7/12C09D7/02C09D7/06C09D5/10C09D5/24C09D7/45C09D7/47
CPCC09D5/10C09D5/103C09D5/24C09D7/45C09D7/47C09D7/62C09D7/63C09D7/69C09D7/70
Inventor 麦浩
Owner FOSHAN GAOMING DISTRICT MINGCHENG TOWN NEW ENERGYNEW MATERIAL IND TECH INNOVATION CENT