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Flexible graphite gasket and preparation method thereof

A technology of flexible graphite and gaskets, which is applied in the sealing of graphite, mechanical equipment, and engines, can solve the problems of poor elasticity of the metal skeleton, high use cost, and complicated manufacturing process, and achieve high structural strength, cost reduction, and improved structure. The effect of intensity

Pending Publication Date: 2020-11-13
GUIZHOU LANXIN GRAPHITE MECHANICAL & ELECTRICAL EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing flexible graphite gaskets are mostly composite gaskets with a metal skeleton, the manufacturing process is complicated, the use cost is high, and the metal skeleton has poor elasticity, which often cannot meet the relevant requirements during use

Method used

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  • Flexible graphite gasket and preparation method thereof
  • Flexible graphite gasket and preparation method thereof

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the examples, but not as a basis for limiting the present invention.

[0028] Embodiments of the invention

[0029] A flexible graphite gasket, as attached Figure 1-2 As shown, it includes an annular flexible graphite gasket body 1 spliced ​​by two semicircular flexible graphite gaskets, and an adhesive (butylene rubber modified phenolic adhesive) is provided in the splicing seam 2, The surface of the ring-shaped flexible graphite gasket body 1 is covered with a polytetrafluoro layer 3 .

[0030] The splicing seam 2 is in the shape of a bevel, and the bevel angle is 15-60°.

[0031] The polytetrafluoro layer 3 is made by winding a polytetrafluoro tape.

[0032] The preparation method of above-mentioned flexible graphite gasket, comprises the steps:

[0033] 1 Take the completed flexible graphite profiled plate, typesetting and cutting the semi-circular flexible graphite sheet;

[0034] 2. Sp...

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Abstract

The invention discloses a flexible graphite gasket and a preparation method thereof. The flexible graphite gasket comprises an annular flexible graphite gasket body formed by splicing two semicircularflexible graphite gaskets, wherein a bonding agent is arranged in a splicing seam; and the surface of the annular flexible graphite gasket body is coated with a polytetrafluoroethylene layer. The preparation method comprises the following steps of: taking a manufactured flexible graphite contour plate, and typesetting and cutting semicircular flexible graphite sheets; splicing the two semicircular flexible graphite sheets obtained by cutting, and coating the bonding agent at the splicing seam to form the annular flexible graphite gasket body; and coating the surface of the spliced annular flexible graphite gasket body with the polytetrafluoroethylene layer, then putting the annular flexible graphite gasket body into a hot-pressing shaping machine for shaping, and taking out and cooling the annular flexible graphite gasket body after shaping is finished to obtain the required flexible graphite gasket. The flexible graphite gasket has the characteristics of relatively high structural strength, low possibility of being damaged, scratched and broken, good elasticity and capability of better meeting related requirements when being used as a gasket; and in addition, the flexible graphite gasket has the characteristics of simple preparation process and low cost.

Description

technical field [0001] The invention relates to a graphite gasket and a preparation method thereof, in particular to a flexible graphite gasket and a preparation method thereof. Background technique [0002] Flexible graphite, also known as expanded graphite, has many advantages such as high temperature resistance, corrosion resistance, and stable chemical properties. It overcomes the brittleness of graphite materials, is loose, porous, and elastic, and shows good sealing performance; If it is not properly stored or handled properly, the mat may be bruised, scratched, or even broken. Therefore, sealing products with high-performance flexible graphite as the substrate and stable high-temperature resistant materials as reinforcing materials are the mainstream development trend of the current sealing industry. [0003] Existing flexible graphite gaskets are mostly composite gaskets with a metal skeleton, the manufacturing process is complicated, the use cost is high, and the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/00C01B32/21
CPCF16J15/00C01B32/21
Inventor 孟海波杨颖
Owner GUIZHOU LANXIN GRAPHITE MECHANICAL & ELECTRICAL EQUIP MFG
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