A kind of multifunctional graphite interlayer compound and its preparation method and application

A graphite interlayer and compound technology, which is applied in coatings, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of reduced electromagnetic shielding effectiveness, achieve improved product, efficient and stable processing, and improved thermal resistance Effect

Active Publication Date: 2016-10-19
GAOBEIDIAN SHUNXIN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to research, most of the electromagnetic waves that are harmful to humans are in the low frequency range (wavelength 3mm-8mm), and the expanded graphite in the current study reflects electromagnetic waves due to its conductivity, and has almost no magnetic loss absorption for electromagnetic waves, and the higher the frequency, the shielding reflection The higher the rate, the electromagnetic shielding effectiveness of expanded graphite decreases sharply as the frequency decreases, so there are still relatively large defects in shielding electromagnetic waves in the low frequency range.

Method used

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  • A kind of multifunctional graphite interlayer compound and its preparation method and application
  • A kind of multifunctional graphite interlayer compound and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment uses 100 mesh, and the carbon content is> 99% natural flake graphite with CrO 3 , CH 3 NO 2 As mixed oxidant by chemical oxidation method according to graphite: CH 3 NO 2 : FeCl 3 : CrO 3 The mass ratio of =1:3.2:1:0.4 is to sequentially add the above-mentioned raw materials into a reactor equipped with a reflux condenser and a stirrer under constant stirring. Keep a constant temperature of 30°C in the kettle, stir at a speed of 100r / min for 60 minutes, and wash the solution until it is colorless, and the pH value is measured as neutral. Dry for 5 hours at 60°C to obtain interlayer compound.

[0029] The above is using FeCl 3 Expandable graphite formed as intercalation agent. The expansion volume is large, the number of micropores is large, and the micropore structure parameters are relatively uniform. FeCl 3 Insert to increase the magnetic properties of the graphite interlayer compound. FeCl during high temperature expansion of GIC 3 The oxidation-reducti...

Embodiment 2

[0049] In this example, the flexible graphite powder produced in Example 1, according to Table 3, uses different polymers as base materials, and uses a mass ratio of 1:4 to make a functional masterbatch that is antistatic and anti-electromagnetic wave in a wide frequency range. First put it into the high-speed disperser, put 1%-2% of the mass of titanate coupling agent and mix with silicate coupling agent (mass ratio 1:1) for surface activation, rotating speed 500r / min, time 30mins, temperature 100 ℃. After discharging, put it into the mixer, (at this time, set the temperature according to different base materials, as shown in Table 2), and add 5% POE and 1% antioxidant for mixing until uniformly agglomerated, Put into the twin-screw granulator by the transporter, set the speed requirements of the twin-screw granulator according to the temperature of each zone in the table (as shown in the table), and prepare the functional masterbatch after stretching into strips, cooling and ...

Embodiment 3

[0054] Prepare functional PS special masterbatch and expandable functional PS masterbatch.

[0055] In this example, the flexible graphite powder prepared in Example 1 was first washed with an organic solvent and then placed in a centrifuge for centrifugation and drying, and then placed in a reaction kettle with deionized water: anionic surfactant, PVA: graphite =20:1:1, after 7 hours at a temperature of 70°C and a rotation speed of 300r / min, the activated flexible graphite is obtained by suction filtration and centrifugal drying.

[0056] Suspension polymerization is carried out with deionized water and styrene monomer, 5:1 oil phase and water ratio. First, add deionized water to the reaction kettle to activate flexible graphite powder, BPO initiator, inorganic dispersant, emulsifier, anhydrous sulfuric acid, etc., and mix and suspend them uniformly. The temperature is 80℃ and the stirring speed is 110r / min. Polymerization method and procedure to form polystyrene particles. This...

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Abstract

The invention relates to a multifunctional graphite interlayer compound as well as a preparation method and application thereof. The multifunctional graphite interlayer compound comprises an Ni-Fe alloy as an intercalator, wherein the intercalator is suitable for shielding low-frequency electromagnetic radiation with the wavelength of 3-8 mm, the intercalator can be multiply combined with other intercalators in a multistep way, achieves a very good effect of shielding a wide-frequency electromagnetic wave, has multiple functions of electrostatic prevention, thermal resistance reduction and the like and can be used for realizing the breakthrough in the field. The invention also provides a preparation method with convenience for processing and low cost, further application of an expanded graphite product in preparing various terminal products and application in preparing a functional expandable particle especially.

Description

Technical field [0001] The invention belongs to the field of graphite interlayer compounds, and specifically relates to a multifunctional graphite interlayer compound that can shield electromagnetic waves, prevent static electricity and reduce thermal resistance, especially expanded graphite. Background technique [0002] Electronic products that radiate various electromagnetic wave components have sprung up after the rain, such as mobile phones, computers, etc. The electromagnetic interference generated by the impact of human health has become a new issue of widespread concern in society, and the development of electromagnetic wave protection and electromagnetic shielding materials is far from Can reach a satisfactory level. Most of the electromagnetic shielding materials currently available are extremely inconvenient in the production of final products, and cannot even be combined with chemical processing equipment, so the application is greatly restricted. [0003] Graphite int...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/04C08K9/02C08K3/04C08L23/08C08L23/12C08L27/06C08F112/08C08J9/14C08L25/06C09D7/12C09J11/04
Inventor 贾纬民安云
Owner GAOBEIDIAN SHUNXIN CHEM
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