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Pressure sealant and production technology thereof

A production process and injection technology, which is applied in the directions of adhesives, adhesive additives, polymer adhesive additives, etc., can solve the problem that it is difficult to fill cavities and narrow gaps in plugging operations, and cannot ensure the safety of injection and sealing construction. White oil has problems such as low flash point and ignition point, and achieves the effect of giving full play to technical efficiency, saving resources and environmental protection, and preventing fire and explosion.

Active Publication Date: 2015-05-20
天津市翔悦密封材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The injections used in the current sealing construction all use white oil as the plastic modifier. The preparations not only have poor cold flow properties at low temperature, but also have low flash point and ignition point of the white oil, so the safety of the injection sealing construction cannot be guaranteed.
In addition, due to poor low-temperature cold flow, it is difficult to fill the cavity and narrow gaps smoothly in the plugging operation, and other sealing measures must be supplemented, thereby increasing the operating cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0031] Take 40kg of dispersed polytetrafluoroethylene resin, 6kg of fluorine oil, 2kg of silicone oil, 4kg of expanded graphite, and 2kg of carbon fiber, and place them in a ball mill rack type roller kneading machine in sequence, and knead for 1 hour to make the components evenly dispersed and absorbed, and mix Stand still for 6 hours after the refining is completed; put the material that has been kneaded and stand still for 6 hours into the billet making machine, and pressurize 2MPa to make Billet; place the finished billet in the material chamber of a horizontal pusher, and extrude it under a pressure of 10MPa straight cylindrical strips, then cut into of finished products.

[0032] The present invention uses polytetrafluoroethylene macromolecular material as the base material, and screens the modified auxiliary agent, and the new type of sealing injection prepared has better chemical stability, low temperature cold fluidity and moldability, thereby realizing the perfor...

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PUM

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Abstract

The invention discloses a pressure sealant and production technology thereof. The sealant comprises 100 parts of polytetrafluoroethylene as a matrix material, 20 parts of a mixture of fluorocarbon oil and dimethicone as a performance additive, 10 parts of expandable graphite as a filler, and 5 parts of carbon fibre as a reinforcing material, and is prepared through steps such as mixing and extruding. According to the invention, a polymer material of polytetrafluoroethylene is taken as the matrix material; the performance additive is screened; and the prepared novel sealant has preferable chemical stability, a low-temperature cold flow property and mouldability. Therefore, the sealant is adaptable to leakage seal of mediums with high temperature, high pressure, ultralow temperature, strong corrosivity, high dissolvability and strong oxidizability to ensure the safety and reliability of a seal construction process with temperature and pressure.

Description

technical field [0001] The invention relates to the technical field of pressure sealing, in particular to a pressure sealing injection and a production process thereof. Background technique [0002] The pressure sealing technology is a technical means to re-establish a new effective sealing structure at the leakage defect site without affecting the normal operation of the device when the fluid medium leaks in the device during operation. At present, this technology has been widely adopted by petroleum, petrochemical, metallurgical, electric power and other process enterprises. It has played a great role in avoiding waste of energy and resources, preventing malignant accidents, and ensuring the safety, stability and long-term operation of the device. This technology is composed of special sealants, special fixtures, special tools and plugging operation technology. The basic principle of the technology is: use a special fixture to contain the leakage point, establish a sealin...

Claims

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Application Information

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IPC IPC(8): C09J127/18C09J11/08C09J11/04C08L27/18C08L83/04C08K7/06C08K3/04C08K3/12C08K3/10
Inventor 王金荣赵志方
Owner 天津市翔悦密封材料股份有限公司
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