Heat-conductive rubber material for drilling tools and preparation method thereof

A heat-conducting rubber and drilling tool technology, which is applied in the direction of heat exchange materials, chemical instruments and methods, can solve problems such as aging and sealing failure, and achieve the effects of improving temperature resistance, increasing thermal conductivity, and promoting uniform dispersion

Active Publication Date: 2019-03-29
KINGDREAM PLC CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The temperature resistance limit of traditional nitrile rubber is generally 120 ℃ ~ 130 ℃, and the temperature resistance limit of hydrogenated nitrile rubber is generally 175 ℃ ~ 180 ℃. If the drilling tool uses traditional nitrile rubber and hydrogenated nitrile rubber materials, if it exceeds the substrate The temperature limit of the material will quickly age and cause the seal to fail

Method used

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  • Heat-conductive rubber material for drilling tools and preparation method thereof
  • Heat-conductive rubber material for drilling tools and preparation method thereof
  • Heat-conductive rubber material for drilling tools and preparation method thereof

Examples

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Effect test

Embodiment

[0031] The mass ratios of the raw materials of Examples 1-2 of the present invention and Comparative Examples 1-4 are shown in Table 1, and all adopt nitrile rubber material as the main material, wherein Comparative Example 1 does not add heat-conducting material, and Comparative Example 2 is the same as Comparative Example 1. Based on the addition of carbon nanotubes; comparative example 3 added heat-conducting carbon fibers on the basis of comparative example 1; comparative example 4 added graphene on the basis of comparative example 1; embodiment 1 is based on comparative example 1 Carbon nanotubes, thermally conductive carbon fibers, and graphene are added; embodiment 2 adds spherical alumina on the basis of embodiment 1.

[0032] Table 1

[0033]

[0034]

[0035] The pretreatment process of the heat-conducting material in the above Examples 1-2 and Comparative Examples 2-4 is carried out as follows: add 5 parts of amorphous silicon dioxide to the ionic liquid at a he...

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PUM

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Abstract

The invention relates to a heat-conductive rubber material for drilling tools and a preparation method thereof. The heat-conductive rubber material is composed of the following raw materials by weight: 90 to 100 parts of hydrogenated nitrile or nitrile rubber, 20 to 70 parts of carbon black, 5 to 15 parts of amorphous silica, 3 to 9 parts of an activator, 2 to 20 parts of a plasticizer, 2 to 10 parts of a vulcanizing agent, 1 to 5 parts of an anti-aging agent, 1 to 6 parts of a dispersing agent, 1 to 50 parts of a heat-conductive material and 10 to 15 parts of an ionic liquid. The rubber material provided by the invention has the advantages of excellent physical and mechanical properties, excellent heat conduction performance and dielectric barrier properties and low volume change rate inmud, and can effectively improve the temperature resistance of a main rubber material.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and relates to a heat-conducting rubber material used for drilling tools and a preparation method thereof. Background technique [0002] Rubber is commonly used as a sealing material in oil drilling tools. Drilling tools have been in contact with mud medium for a long time during downhole operations. Mud has a certain corrosive ability to rubber. Usually, rubber will swell, shrink, soften, and harden after the action of mud. Changes, accompanied by the reduction of rubber physical and mechanical properties and aging resistance, the double changes in size and performance can easily lead to early failure of rubber materials, thus affecting the normal use of drilling tools. [0003] The most common rubber material used in drilling tools is nitrile rubber or hydrogenated nitrile rubber, and the appropriate rubber material is generally selected according to the operating temperature of t...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08K13/06C08K9/04C08K3/36C08K3/04C08K7/06C08K7/18C09K5/14
CPCC08K3/04C08K3/36C08K7/06C08K7/18C08K9/04C08K13/06C08K2201/003C08K2201/004C08K2201/006C09K5/14C08K3/041C08K3/042C08L9/02
Inventor 张玲欧阳江林汪猛徐磊
Owner KINGDREAM PLC CO
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