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Conductive silicone rubber with electromagnetic shielding performance and manufacturing method

An electromagnetic shielding, conductive silicon technology, applied in the field of conductive silicone rubber and its preparation, to achieve the effects of reducing material consumption, excellent electromagnetic shielding performance, high electrical conductivity and magnetic permeability

Inactive Publication Date: 2014-02-26
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In these reports, there are conductive rubber with silver as filler, and there are also reports about silver powder, nickel powder, carbon black, and stainless steel fiber as filler, but they all have electrical conductivity as the evaluation standard, and cannot obtain good results in a wide electromagnetic wave frequency band. The shielding effect or anti-interference ability

Method used

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  • Conductive silicone rubber with electromagnetic shielding performance and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) Mix hydroxyl silicone rubber, isocyanate, silver-plated nickel powder and silver-plated copper powder in a ratio of 100:1:300:300 on a double-roller mill for 1 hour at a temperature of 80°C;

[0035] 2) Put the composite material kneaded in step 1 into a flat vulcanizer at 100° C. and 8 MPa for compression molding.

Embodiment 2

[0037] 1) Mix hydroxyl silicone rubber, isocyanate, silver-plated nickel powder and silver-plated copper powder in a ratio of 100:4:300:450 on a double-roll mill for 1 hour at a temperature of 100°C;

[0038] 2) Put the composite material kneaded in step 1 into a flat vulcanizing machine at 120° C. and 5 MPa for compression molding.

Embodiment 3

[0040] 1) Mix hydroxyl silicone rubber, isocyanate, silver-plated nickel powder and silver-plated copper powder in a ratio of 100:8:300:600 on a double-roller mill for 0.5h at a temperature of 120°C;

[0041] 2) Put the composite material kneaded in step 1 into a flat vulcanizer at 180° C. and 5 MPa for compression molding.

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Abstract

The invention provides conductive silicone rubber with electromagnetic shielding performance and a manufacturing method, and belongs to the field of preparation of organic polymer / metal composite material and chemical processing. The conductive silicone rubber employs silicone rubber elastomer as a base and employs silvered nickel powder and silvered copper powder for enhancing the magnetic conductibility and the electric conductivity of the material and for further enhancing the comprehensive mechanical properties and the electromagnetic shielding performance of the composite material, and the conductive silicone rubber material has relatively good electromagnetic shielding performance at a frequency range of 200 KHz-10 GHz, is applicable to electromagnetic shielding of transformer stations, and can satisfy the material installation construction technology because of the good strength and toughness.

Description

【Technical field】 [0001] The invention belongs to the field of composite polymer materials, and in particular relates to a conductive silicone rubber with electromagnetic shielding performance and a preparation method thereof. 【Background technique】 [0002] With the large-scale application of ultra-high voltage and ultra-high voltage transmission in my country's power grid and the promotion of intelligent power transmission and transformation technology, the level of power transmission voltage in the power grid has been continuously improved, and the problem of electromagnetic interference in substations / converter stations has become increasingly prominent. In this way, in a limited space environment, how to achieve effective shielding and compatibility between the primary system and the secondary system has attracted increasing attention. Secondary equipment such as protection and control will be in a harsher electromagnetic environment, and higher and higher requirements ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/06C08K13/02C08K3/08C08K5/29B29C35/02
Inventor 陈川聂京凯樊超韩钰陈新
Owner STATE GRID CORP OF CHINA
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