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Sealant for high temperature pressurized leakage stop-up

A technology of high temperature under pressure and sealant, applied in the direction of shaft seal, pipe components, valve details, etc., to achieve the effect of eliminating leakage

Inactive Publication Date: 2010-11-10
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problems existing in the non-stop under pressure sealing agent, and provides a pressure sealing agent suitable for various medium environments and able to withstand high temperatures of 200-800°C

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2-9

[0022] Adopt the preparation method sealant of embodiment 1 by the prescription of table 1.

[0023] The formula of table 1 embodiment 2-9

[0024] substance

[0025] substance

[0026] The sealant prepared above has high practical value for solving the leakage produced in the production of enterprises (especially continuous production enterprises). Moreover, it has been popularized and applied in many large and medium-sized enterprises, and has avoided major accidents such as fire, explosion, and parking caused by medium leakage for many enterprises, enabling enterprises to obtain greater economic and social benefits.

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Abstract

The invention relates to a sealant for high temperature pressurized leakage stop-up, which belongs to the technical filed of polymer chemical industry, and is characterized by taking nitrile rubber and liquid nitrile rubber as main body rubber materials, and adding phenolic resin and a reinforcing filler, an antioxidant, a curing agent, an accelerator, a softener and other additives to prepare the high-temperature leakage stop-up sealant for carrying out pressurized leakage stop-up under different medium states such as high-temperature steam, high temperature hydrocarbon, flue gas and the like after roll mixing. The sealant has wide range of suitable sealants and erosion medium resistance, and keeps stable for long time. The sealant has excellent oil resistance, heat resistance, storage stability and good adhesion of polar materials.

Description

technical field [0001] The invention relates to a high-temperature sealant suitable for continuous production of various media without stopping under pressure and plugging leaks, and belongs to the technical field of polymer chemical industry. Background technique [0002] Non-stop pressure sealing technology is an advanced equipment maintenance technology developed in the mid-1970s. The on-site leak plugging technology with temperature and pressure is currently the most advanced, safest and most reliable technical means for eliminating leakage accidents in continuous production enterprises in the world. When the equipment and pipeline of the production device leak, the leakage medium is in a state of temperature, pressure and outward jet flow. The original closed cavity of the leaking part can be used, or a closed cavity can be established on the leaking part, and the thrust force greater than the pressure of the medium system can be used to inject and fill the closed spac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L61/06C08K13/02C08K3/06C08K5/40C08K3/04C08K3/36C08K5/09C08K5/54C08K3/22C08K5/14C09K3/10F16K41/02F16L55/175
Inventor 张华田丰宝
Owner DALIAN UNIV OF TECH
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