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Electromagnetic shielding wave-absorbing material and manufacturing process thereof

A wave-absorbing material and electromagnetic shielding technology, applied in the fields of magnetic/electric field shielding, flat products, electrical components, etc., can solve the problems that wave-absorbing powder cannot be added evenly, mass production is time-consuming and laborious, and thick sheets cannot be made. , to achieve the effect of easy control of product size, small investment in equipment, and small demand for personnel

Pending Publication Date: 2022-05-03
苏州铂韬新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] (1) There are many types of reagents added, the process is cumbersome, and mass production is time-consuming and laborious.
[0011] The energy consumption is high; (2) Thick sheet products cannot be made by rolling with a drum vulcanizer after scraping; (3) The addition of wave-absorbing powder during the calendering process of a drum vulcanizer cannot be added evenly, and the product yield is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] An electromagnetic shielding wave-absorbing material, comprising the following components by weight:

[0029] CPE7130 powder is 6 parts

[0030] 13 parts of iron silicon chromium absorbing powder.

[0031] The manufacturing process of electromagnetic shielding absorbing material is as follows:

[0032] (1): Put 6 parts by weight of CPE7130 powder into the internal mixer for 10 minutes of internal mixing;

[0033] (2): Add 13 parts by weight of iron-silicon-chromium absorbing powder to CPE7130 that has been banburyed, and mix CPE7130 and iron-silicon-chromium wave-absorbing powder evenly through the principle of kneading;

[0034] (3): Put the mixed material into the granulation equipment to produce mixture particles with a length of no more than 2mm, and obtain mixture particles with stable performance after wind cooling

[0035] (4): The mixture particles are extruded by an extruder and then calendered by a calender to obtain a wave-absorbing material with uniform t...

Embodiment 2

[0040] An electromagnetic shielding wave-absorbing material, comprising the following components by weight:

[0041] CPE7130 powder is 6 parts

[0042] 13 parts of iron silicon chromium absorbing powder.

[0043] (1): Put 6 parts by weight of CPE7130 powder into the internal mixer with a heating temperature of 135°C and start it for 8 minutes of internal mixing;

[0044] (2): Add 13 parts by weight of iron-silicon-chromium absorbing powder to CPE7130 that has been banburyed, and mix CPE7130 and iron-silicon-chromium wave-absorbing powder evenly through the principle of kneading;

[0045] (3): Put the mixed materials into the granulation equipment. The temperature parameters of the equipment are 60°C in area A, 80°C in area B, and 120°C in area C. The mixture particles with a length of no more than 2mm are produced and dried by water-cooled air. Obtain mixture particles with stable performance;

[0046] (4): The mixture particles are extruded by an extruder and then calender...

Embodiment 3

[0049] An electromagnetic shielding wave-absorbing material, comprising the following components by weight:

[0050] CPE7130 powder is 7 parts

[0051] FeSiCr absorbing powder 14 parts.

[0052] The manufacturing process of electromagnetic shielding absorbing material is as follows:

[0053] (1): Put 7 parts by weight of CPE7130 powder into the internal mixer for 9 minutes of internal mixing;

[0054] (2): Add 14 parts by weight of iron-silicon-chromium absorbing powder to CPE7130 that has been banburyed, and mix CPE7130 and iron-silicon-chromium wave-absorbing powder evenly through the principle of kneading;

[0055] (3): Put the mixed material into the granulation equipment to produce mixture particles with a length of no more than 2mm, and obtain mixture particles with stable performance after wind cooling

[0056] (4): The mixture particles are extruded by an extruder and then calendered by a calender to obtain a wave-absorbing material with uniform thickness.

[0057]...

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Abstract

The invention discloses an electromagnetic shielding wave-absorbing material which is composed of CPE7130 powder and iron-silicon-chromium wave-absorbing powder according to a certain proportion, during preparation, the CPE7130 powder and the iron-silicon-chromium wave-absorbing powder are directly put into an internal mixer to be mixed at a certain temperature, the mixed mixture is granulated, and the wave-absorbing material in the form of a coiled material is obtained after extrusion and calendering. The wave-absorbing material can be used for an electronic component detection camera obscura, and the problem that electronic components are interfered by electromagnetic waves in the detection process is solved.

Description

technical field [0001] The invention relates to the fields of electromagnetic shielding and electromagnetic wave absorption, and discloses an electromagnetic shielding wave-absorbing material and a manufacturing process thereof. Background technique [0002] At present, the processing technology of absorbing materials is mostly in the following ways: [0003] S1: Stir the solvent, supermagnetic powder, and dispersant with a contact mixer for 20 to 40 minutes; [0004] S2: Add the adhesive and carry out second quick stirring for 10-20 minutes; [0005] S3: Add a thickener to adjust the viscosity to 7500-10000mPa .s; [0006] S4: Add anti-sedimentation agent and stir slowly for 3-6 minutes to obtain slurry; [0007] S5: using a tape casting machine to scrape and coat the slurry, and wind it up after drying; [0008] S6: heating the material obtained in step S5 to 60-70° C., calendering through a drum vulcanizer, adding wave-absorbing powder, then drying and winding. [00...

Claims

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Application Information

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IPC IPC(8): C08L23/28C08K3/01H05K9/00B29D7/01
CPCC08K3/01H05K9/0081B29D7/01C08L23/286
Inventor 李健管由全从涛
Owner 苏州铂韬新材料科技有限公司
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