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Preparation method of electromagnetic shielding polymer material
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A polymer material and electromagnetic shielding technology, applied in the field of preparation of electromagnetic shielding polymer materials, can solve problems such as endangering human health, interfering with normal work, information leakage, etc.
Inactive Publication Date: 2017-09-15
SUZHOU NANER MATERIAL TECH CO LTD
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Abstract
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Problems solved by technology
Relevant studies have confirmed that electromagnetic waves emitted by electronic and electrical equipment will not only interfere with the normal operation of other instruments and equipment, but may also lead to information leakage and even endanger human health.
Method used
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[0019] Nano-carbon fiber pretreatment, the nano-carbon fiber is oxidized with concentrated sulfuric acid and potassiumpermanganate mixed acid, after ultrasonic vigorous stirring, the carboxylated nano-carbon fiber is obtained, the surface treatment agent is added, heat treatment at 150 ° C for 10 minutes, and silver is added. Under the protection of a mixed gas of nitrogen and helium, heat at 4000° C. for 30-45 minutes to uniformly disperse the silver in the carbon nanofibers.
[0020] Put pretreated graphite and pretreated nano-carbon fiber in a container, dissolve with 150 parts of isopropanol, then add dispersant, polyphenylene sulfide, PPS resin, blend with a strong mixer, and then use an ultra...
Embodiment 2
[0027] Graphite pretreatment, adding sodiumfluoride to the nano-graphite powder, adding a metal catalyst, mixing, heating at 650°C under the protection of an inert gas, and controlling the heating time for 15 minutes, and fixing sodium fluoride on the surface of the nano-graphite powder .
[0028] Nano-carbon fiber pretreatment, the nano-carbon fiber is oxidized with concentrated sulfuric acid and potassiumpermanganate mixed acid, after ultrasonic vigorous stirring, to obtain carboxylated nano-carbon fiber, add surface treatment agent, heat treatment at 200 ° C for 15 minutes, add silver, in Under the protection of a mixed gas of nitrogen and helium, heat at 450° C. for 45 minutes to uniformly disperse the silver in the carbon nanofibers.
[0029] Put pretreated graphite and pretreated nano-carbon fiber in a container, dissolve with 250 parts of isopropanol, then add dispersant, polyphenylene sulfide, PPS resin, blend with a strong mixer, and then use an ultrasonic disperser...
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Abstract
The invention discloses a preparation method of an electromagnetic shieldingpolymer material. A nanometer carbon conductive fiber material added to alloy has good electromagnetic shielding ability, and the nanometer carbon conductive fiber material contains treated graphite having good dispersibility and treated nanometer carbon fibers, so the nanometer carbon conductive fiber material has improved electrical conduction property, can be easily compounded with a conductive polymer, and also has strong physical properties, thereby the prepared electromagnetic shieldingpolymer material has is insensitive to surrounding environment, has strong electromagnetic shielding duration, has better electromagnetic shielding ability than common polymer materials, and has good heat resistance.
Description
technical field [0001] The invention relates to the field of manufacturing electromagnetic shielding materials, in particular to a preparation method of electromagnetic shielding polymer materials. Background technique [0002] With the rapid development of the electronic information industry, electrical and electronic equipment has been widely used in all walks of life. While they provide great convenience to people's lives, they also expose serious electromagnetic pollution problems. Relevant studies have confirmed that electromagnetic waves emitted by electronic and electrical equipment will not only interfere with the normal operation of other instruments and equipment, but may also lead to information leakage and even endanger human health. Electromagnetic pollution has become the fourth major public hazard that endangers human existence after noisepollution, air pollution and water pollution. [0003] In order to reduce or eliminate the harm caused by electromagnetic...
Claims
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Application Information
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