High-performance electric-conducting rubber material for aerospace, and preparation method and application thereof

A technology of aerospace and conductive rubber, applied in the field of modified rubber, can solve the problems that conductive materials cannot be applied, achieve excellent electrical and thermal conductivity, improve high temperature resistance, and improve poor mechanical properties

Active Publication Date: 2015-09-30
青岛科凯达橡塑有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some conductive and thermally conductive materials based on nitrile rubber or butadiene rubber are better than silica gel in terms of mechanical properties and chemic

Method used

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  • High-performance electric-conducting rubber material for aerospace, and preparation method and application thereof
  • High-performance electric-conducting rubber material for aerospace, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1. Dissolve 20.3g of nickel nitrate and 17.9g of magnesium nitrate in 100ml of absolute ethanol to prepare a mixed catalyst precursor solution, and prepare a 1:1 mixed solution of 0.7mol / L of nickel nitrate and magnesium nitrate. Apply the prepared precursor solution evenly on the copper substrate and let it dry naturally;

[0045]2. Put the tin wire under the substrate after being wound, and put it on the deposition table in the cavity of the DC plasma chemical vapor deposition equipment. Close the vacuum chamber and turn on the vacuum pump to evacuate. When the pump pressure is less than 0.1 Pa, argon and hydrogen are introduced into the vacuum chamber. The flows of argon and hydrogen are 4L / min and 10L / min respectively, start the DC arc, adjust the arc current to 120A, adjust the exhaust valve and the vacuum chamber regulating valve to stabilize the pressure in the vacuum chamber at 3000Pa, and react for 8min to obtain Ni / MgO catalyst;

[0046] 3. Under the condit...

Embodiment 2

[0058] 1. The preparation and surface treatment of modified carbon nanotubes, graphene and aluminum nitride are the same as steps 1 to 6 in Example 1.

[0059] 2. First, add 150g of hydrogenated nitrile rubber, 50g of fluororubber 246, 50g of perfluoroether rubber, 10g of magnesium hydroxide and 5g of magnesium oxide into the internal mixer for mastication, and add the prepared modified rubber when the temperature rises to 50°C. 25g of permanent carbon nanotubes, 25g of modified graphene, 20g of surface-treated aluminum nitride and 30g of DOP for banburying, the banburying time is 2 minutes, and the temperature of the banbury mixer is 65°C; then add 30g of carbon black N330 and 30g of carbon black in sequence N550, 10g white carbon black, 20g calcium carbonate, 10g talcum powder, 40g kaolin, 10g coumarone resin and 10g polybutadiene resin, add 15g aromatic oil and 15g chlorinated paraffin during the period, continue banburying for 6min, internal mixer The temperature is 85°C; ...

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Abstract

The invention relates to a high-performance electric-conducting rubber material for aerospace, which is prepared from the following components in parts by weight: 50-100 parts of hydrogenated nitrile-butadiene rubber, 40-80 parts of auxiliary rubber material, 30-50 parts of electric-conducting heat-conducting medium material, 30-50 parts of reinforcing material, 30-50 parts of toughener, 30-50 parts of filler, 8-10 parts of stabilizer, 10-15 parts of tackifier, 3-5 parts of vulcanizing agent and 2-3 parts of assistant vulcanizing agent. The material has very excellent electric-conducting and heat-conducting characteristics, the volume resistivity is down to 0.005 ohm.cm below, and the heat conductivity coefficient is up to 4W/(m.K) above. The material has very excellent physical and mechanical properties, oil resistance, aging resistance and low-temperature resistance, and can be used as an electric-conducting heat-conducting rubber material in the fields of aerospace, track transportation, new energy, petroleum and the like.

Description

technical field [0001] The invention relates to the field of modified rubber, in particular to a high-performance conductive rubber material for aerospace and its preparation method and application. Background technique [0002] At present, the conductive and thermally conductive rubber materials on the market are mainly conductive and thermally conductive rubber based on silicone rubber, and the volume resistivity is generally 10. 5 ~10 9 About Ω·cm, after adding some metal conductive powder fillers, it can reach several thousand or hundreds of ohm cm, and the thermal conductivity is usually 1.2~3W / (m.K). Some conductive and thermally conductive materials based on nitrile rubber or butadiene rubber are better than silica gel in terms of mechanical properties and chemical resistance, but due to the characteristics of the material itself, these conductive materials cannot be applied to aviation with harsh conditions. aerospace field. Now, with the development of my country...

Claims

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Application Information

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IPC IPC(8): C08L15/00C08L27/12C08L29/10C08K13/06C08K9/04C08K9/06C08K7/24C08K3/04C08K3/28C08K3/34C08K3/22B29B7/28B29C35/02
Inventor 张哲
Owner 青岛科凯达橡塑有限公司
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