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0.6-18GHz-frequency-band wave-absorbing/vinyl chloride copolymer anti-electromagnetic interference coating material and preparation method thereof
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A vinyl chloride copolymerization and anti-electromagnetic interference technology, which is applied in the fields of materials and chemicals, can solve the problems of not revealing high-frequency electromagnetic waves, etc., and achieve the effects of long-term anti-electromagnetic interference, good construction performance, and high film thickness
Active Publication Date: 2013-09-04
ZHEJIANG YUANBANG MATERIAL TECH
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[0009] Chinese application number: CN201010561198.2, patent name: Compliant coating electromagnetic shielding coating and the patent application of the conforming coating electromagnetic shielding material disclosed that the conforming coating electromagnetic shielding coating includes a conductive layer coating with a reflective function and an absorbing coating. Functional wave-absorbing coating; reflective layer coating components include: polymeremulsion, conductive filler, coupling agent, defoamer, wetting agent, film-forming aid, thickener and water; wave-absorbing layer coating components include: Polymeremulsion, wave-absorbing filler, coupling agent, defoamer, wetting agent, film-forming aid, thickener and water; the invention adopts the method of compounding wave-absorbing layer and reflective layer to prepare electromagnetic radiation shielding material, which is effective reduce the secondary pollution caused by reflection of electromagnetic radiation, but this scheme does not reveal whether it has a good absorbing effect on high-frequency electromagnetic waves
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Embodiment 1
[0034] 1) Under stirring conditions, mix 35% wave-absorbing powder with 8% vinyl chloride copolymer resin, disperse evenly, and prepare invisible powder vinyl chloride copolymer resin slurry by sand milling or ball milling.
[0035] 2) Under stirring conditions, add 25% optional polymer resin, 25% optional phthalates, 1.5% optional coupler to the invisible powder vinyl chloride copolymer resin slurry in (1). Combined agent, 5.5% optional acicular talcum powder to prepare vinyl chloride copolymer anti-electromagnetic interference coating.
[0036] 3) Curing at 25°C to form a film.
Embodiment 2
[0038] 1) Under stirring conditions, mix 38% wave-absorbing powder with 10% vinyl chloride copolymer resin, disperse evenly, and prepare invisible powder vinyl chloride copolymer resin slurry by sand milling or ball milling.
[0039] 2) Under stirring conditions, add 23% optional polymer resin, 22% optional phthalate, 2% optional coupler to the invisible powder vinyl chloride copolymer resin slurry in (1). Combined agent, 5% optional acicular talcum powder to prepare vinyl chloride copolymer anti-electromagnetic interference coating.
[0040] 3) Curing at 25°C to form a film.
Embodiment 3
[0042] 1) Under stirring conditions, mix 40% wave-absorbing powder with 10% vinyl chloride copolymer resin, disperse evenly, and prepare invisible powder vinyl chloride copolymer resin slurry by sand milling or ball milling.
[0043] 2) Under stirring conditions, add 20% optional polymer resin, 23% optional phthalates, 2% optional coupler to the invisible powder vinyl chloride copolymer resin slurry in (1). Combined agent, 5% optional acicular talcum powder to prepare vinyl chloride copolymer anti-electromagnetic interference coating.
[0044] 3) Curing at 25°C to form a film.
[0045] Using the wave-absorbing powder / vinyl chloride copolymer anti-electromagnetic interference coating material prepared in Example 3 above, it is sprayed on the aluminum alloy flat substrate to make a square standard coated wave-absorbing plate. The thickness of the wave-absorbing layer is 1 mm. The reflectivity curve of the wave coating is as figure 2 shown. It can be seen that the absorbing p...
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technical field [0001] The invention belongs to the technical fields of chemical industry and materials, and in particular relates to a wave-absorbing powder / vinyl chloridecopolymer anti-electromagnetic interference coating material with a frequency range of 0.6-18 GHz and a preparation method thereof. Background technique [0002] At present, in terms of electromagnetic wave pollution protection, most of them use electromagnetic wave reflective materials. Although this method solves the protective effect on certain objects, it will inevitably cause secondary pollution of electromagnetic waves. [0003] With the development of modern science and technology and the continuous progress of industrial civilization, electronic appliances and communication systems have penetrated into various fields of production and life, and electromagnetic radiation has become a physical factor that is constantly increasing, changing the physical properties of human living environments. The in...
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