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Preparation method of ageing-resistant and high-resilience extruded carbon black filled conductive shielding silicone rubber

A technology of conductive shielding and high resilience, applied in the field of extruded conductive shielding silicone rubber, can solve the problems of difficult implementation of extrusion process and lower vulcanization efficiency, achieve high elasticity, improve process adaptability, and good durability Effects of Aging Properties and Elasticity

Active Publication Date: 2016-10-12
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But double 2,4 is easy to react with the group on carbon black surface, reduces its vulcanization efficiency (even can't be vulcanized), therefore, a large amount of carbon black is rarely used as filler in extruded silicone rubber compound (see patent " Mixed silicone rubber for extrusion molding of non-stick core wires", application number 201410276155.8)
However, for carbon black-filled silicone rubber with conductive shielding requirements (non-antistatic), it needs to be filled with a sufficient amount of carbon black, which makes the extrusion process difficult to implement.

Method used

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  • Preparation method of ageing-resistant and high-resilience extruded carbon black filled conductive shielding silicone rubber
  • Preparation method of ageing-resistant and high-resilience extruded carbon black filled conductive shielding silicone rubber
  • Preparation method of ageing-resistant and high-resilience extruded carbon black filled conductive shielding silicone rubber

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Experimental program
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Effect test

Embodiment 1

[0025] A kind of preparation method of extrusion type carbon black filling conductive shielding silicon rubber of the present invention, it comprises the steps:

[0026] 1. Prepare the following raw materials (both parts by mass)

[0027] Methyl vinyl silicone rubber (the brand is Zhonglan Chenguang 110-2) 100 parts;

[0028] 6 parts of vulcanizing agent (dicumyl peroxide);

[0029] Superconducting carbon black (Akesu EC-600JD treated with coupling agent KH550) 15 parts

[0030] The treatment method is: mix according to mass parts KH550:EC-600JD=1:8, mix with appropriate amount of ethanol, stir evenly and reflux at 80°C for 4 hours, take out the carbon black, dry it in an oven at 120°C, and grind it Can.

[0031] Structure control agent (hydroxymethyl silicone oil) 4 parts

[0032] 2. Mix the raw materials described in step (1) on an open mill at normal temperature; during the mixing process, the superconducting carbon black of dicumyl peroxide and processing needs to be a...

Embodiment 2

[0036] A kind of preparation method of extrusion type carbon black filling conductive shielding silicon rubber of the present invention, it comprises the steps:

[0037] 1. Prepare the following raw materials (both parts by mass)

[0038] Methyl vinyl silicone rubber (the brand is Zhonglan Chenguang 110-2) 100 parts;

[0039] 7 parts of vulcanizing agent (dicumyl peroxide);

[0040] Superconducting carbon black (cabot's BP2000 treated with coupling agent KH570) 18 parts

[0041] The treatment method is: mix according to mass parts KH570:BP2000=1:6, mix with appropriate amount of ethanol, stir evenly, reflux at 80°C for 4 hours, take out the carbon black, and dry it in an oven at 120°C.

[0042] Structure control agent (polyvinyl silicone oil) 5 parts

[0043] 2. Mix the raw materials described in step (1) on an open mill at normal temperature; during the mixing process, the superconducting carbon black of dicumyl peroxide and processing needs to be added in 5 steps, and kee...

Embodiment 3

[0047] A kind of preparation method of extrusion type carbon black filling conductive shielding silicon rubber of the present invention, it comprises the steps:

[0048] 1. Prepare the following raw materials (both parts by mass)

[0049] 100 parts of methyl vinyl phenyl silicone rubber (the brand is Shanghai Resin Factory 120-1);

[0050] 9 parts of vulcanizing agent (dicumyl peroxide);

[0051] Superconducting carbon black (Huaguang conductive carbon black treated with coupling agent A151) 25 parts

[0052]The treatment method is: mix according to the mass parts A151: Huaguang carbon black = 1:9, add an appropriate amount of ethanol, stir evenly, reflux at 80°C for 6 hours, take out the carbon black, dry it in an oven at 130°C, and grind it That's it.

[0053] Structure control agent (hydroxymethylphenyl silicone oil) 7 parts

[0054] 2. Mix the raw materials described in step (1) on an open mill at normal temperature; during the mixing process, the superconducting carbo...

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PUM

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Abstract

The invention discloses a preparation method of ageing-resistant and high-resilience extruded carbon black filled conductive shielding silicone rubber. The preparation method comprises the steps that 1, 100 parts of silicone rubber, 15-30 parts of coupling agent modified superconductive carbon black, 4-8 parts of a structure control agent and 6-10 parts of vulcanizing agent are prepared by mass; 2, the raw materials in the step 1 are mixed on a mixing mill or a kneading machine at room temperature; 3, the rubber material obtained in the step 2 is subjected to vulcanization treatment, and the vulcanization treatment process is divided into two stages. The prepared conductive shielding silicone rubber has good extrusion processing performance. A preparation process is simple, and the costs are low. The silicone rubber prepared by means of the preparation method has good ageing-resistant performance and elasticity and is suitable for use by serving as a high-performance sealant material.

Description

technical field [0001] The invention relates to the field of processing carbon black-type conductive shielding silicone rubber, in particular to a preparation method of extruded conductive shielding silicone rubber. Background technique [0002] Due to the industrial and personal hazards of electrostatic and electromagnetic models, researchers have invested a lot of effort in developing conductive shielding materials. Conductive silicone rubber not only has a series of common advantages of silicone rubber such as high temperature resistance, weather resistance, and good mold release performance, but also has low affinity with conductive fillers and small resistance changes, thus becoming a high-end conductive shielding material and widely used in In electronic equipment such as aerospace, ships and computers. [0003] At present, the conductive shielding silicone rubber and its products used in industry are mainly filled conductive shielding silicone rubber. According to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/06C08K9/06C08K3/04C08K5/14
CPCC08L83/04C08L2205/025C08L83/06C08K9/06C08K3/04C08K5/14
Inventor 张继华李杰刘小艳吴福迪
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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