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Electromagnetic shielding composite rubber material and preparation method thereof

A conductive composite material and composite rubber technology, applied in the direction of rubber layered products, chemical instruments and methods, lamination, etc., can solve the problem of incompatibility of high electrical conductivity and high magnetic permeability, lower mechanical properties of materials, conductive fillers, etc. Easy to oxidize and other problems, achieve the effect of stable shielding effect, good performance and low manufacturing cost

Active Publication Date: 2015-04-08
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] 1. High electrical conductivity and high magnetic permeability cannot be achieved at the same time, which makes the shielding material only have good shielding effectiveness for electromagnetic waves in some frequency bands;
[0012] 2. A high filling amount will greatly reduce the mechanical properties of the material;
[0013] 3. The conductive filler is easy to oxidize, so that the shielding effectiveness of the material decreases significantly with the increase of use time

Method used

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  • Electromagnetic shielding composite rubber material and preparation method thereof
  • Electromagnetic shielding composite rubber material and preparation method thereof
  • Electromagnetic shielding composite rubber material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073]

[0074] The processing steps are as follows:

[0075] a) Mixing:

[0076] a-1) Raw rubber heating: use an open mill to masticate methyl vinyl silicone rubber raw rubber, and heat to soften;

[0077] a-2) Add 300 parts of anti-aging agent to the softened glue prepared in step a-1); and mix evenly;

[0078] a-3) Add 1000 parts of silver powder to the material prepared in step a-2), and mix evenly;

[0079] a-4) add vulcanizing agent bis 2,5 (2,5-dimethyl-2,5 bis (tert-butyl peroxy) hexane) part to the material prepared in step a-3), vulcanize Accelerator NA-22, 0.5 parts, and mix well;

[0080] a-5) Homogenous mixing: kneading and mixing evenly;

[0081] a-6) the lower film;

[0082] b) Production:

[0083] b-1) Heating the mixed rubber: heating the mixed rubber prepared in step a-5) with an open mill to obtain a flowable mixed rubber;

[0084] b-2) calendering: calendering with a calender;

[0085] Repeat step a) and step b) to make the magnetic silicon rubbe...

Embodiment 2

[0089]

[0090] The processing steps are as follows:

[0091] a) Mixing:

[0092] a-1) Raw rubber heating: use an open mill to masticate methyl vinyl silicone rubber raw rubber, and heat to soften;

[0093] a-2) Add one part of anti-aging agent 2246 to the softened glue prepared in step a-1); and mix evenly;

[0094] a-3) Add 1000 parts of silver-plated copper powder to the material prepared in step a-2), and mix evenly;

[0095] a-4) Add vulcanizing agent double 2, 4 parts, vulcanization accelerator M, one part to the material prepared in step a-3), and mix uniformly;

[0096] a-5) Homogenous mixing: kneading and mixing evenly;

[0097] a-6) the lower film;

[0098] b) Production:

[0099] b-1) Heating the mixed rubber: heating the mixed rubber prepared in step a-5) with an open mill to obtain a flowable mixed rubber;

[0100] b-2) calendering: calendering with a calender;

[0101] Repeat step a) and step b) to make respectively the magnetically permeable silicon ru...

Embodiment 3

[0105]

[0106] The processing steps are as follows:

[0107] a) Mixing:

[0108] a-1) Raw rubber heating: use an open mill to masticate methyl vinyl silicone rubber raw rubber, and heat to soften;

[0109] a-2) Add one part of anti-aging agent 2246 to the softened glue prepared in step a-1); and mix evenly;

[0110] a-3) Add 1000 parts of silver-plated glass microspheres to the material prepared in step a-2), and mix uniformly;

[0111] a-4) Add 2.5 parts of vulcanizing agent di-secondary dicarboxylate and 3.5 parts of vulcanization accelerator TAIC to the material prepared in step a-3), and mix uniformly;

[0112] a-5) Homogenous mixing: kneading and mixing evenly;

[0113] a-6) the lower film;

[0114] b) Production:

[0115] b-1) Heating the mixed rubber: heating the mixed rubber prepared in step a-5) with an open mill to obtain a flowable mixed rubber;

[0116] b-2) calendering: calendering with a calender;

[0117] Repeat step a) and step b) to make respectivel...

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Abstract

The invention provides an electromagnetic shielding composite rubber material, which is of a laminated structure, and comprises a shielding layer and a protective layer which are arranged from inside to outside, wherein the shielding layer comprises a conductive silicone rubber layer and a magnetic conductive silicone rubber layer, and the protective layer is a rubber layer. The shielding layer of the electromagnetic shielding composite rubber material comprises the conductive silicone rubber layer and the magnetic conductive silicone rubber layer, has an electromagnetic shielding performance in a broadband, wide shielding range and high shielding effectiveness, and can be widely used for electromagnetic shielding of electric power, electronics and other industries, and the protective layer selects rubber, and has excellent air tightness, and excellent watertight and mechanical properties, so that the overall strength of the composite material can be improved, the air is isolated, and the oxidation of the conductive filler is slowed, and thus the service life of the shielding material is prolonged, the service performances of the shielding material can be improved, and the shielding effectiveness of the material keeps stable as the service time increases.

Description

technical field [0001] The invention relates to a material and a preparation method thereof, in particular to an electromagnetic shielding composite rubber material and a preparation method thereof. Background technique [0002] Electromagnetic radiation, also known as electronic smog, is composed of electric energy and magnetic energy transferred together in space, and the energy is generated by the movement of electric charges. Electromagnetic radiation is the phenomenon in which energy is emitted into space in the form of electromagnetic waves. [0003] Electromagnetic radiation is divided into natural electromagnetic radiation and man-made electromagnetic radiation. Electromagnetic radiation caused by nature, such as thunder and electricity, belongs to natural electromagnetic radiation, while man-made electromagnetic radiation pollution mainly includes pulse discharge, power frequency alternating magnetic field, microwave, radio frequency electromagnetic radiation, etc....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B25/04B32B25/20B32B25/16B32B25/14B32B37/02C08L11/00C08L83/07C08K13/02C08K3/04C08K3/08C08K3/18
Inventor 王广克陈新韩钰聂京凯樊超田一马光杨富尧祝志祥程灵朱全军陈保安
Owner STATE GRID CORP OF CHINA
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