Production method for sealing gasket

A technology for sealing gaskets and manufacturing methods, applied in chemical instruments and methods, lamination, layered products, etc. Cumbersome and other problems, to achieve the effect of good flexibility, not easy to age, and simple production process

Inactive Publication Date: 2013-04-24
DAISHAN WEIER SEALING MEMBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sealing gasket needs to be compressed and dried through gradual dehydration into layers. The manufacturing process is cumbersome and inconvenient to operate. Moreover, mineral wool fiber is used as the main raw material in the formula of the sealing gasket, and the wear resistance and wear resistance of the fiber are high. Corrosion is not high, flexibility is not strong, so the sealing gasket produced is not wear-resistant, and the service life is not long, so this invention needs to be further improved

Method used

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  • Production method for sealing gasket
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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] Such as figure 1 and figure 2 Shown, the formula of the embodiment of the present invention 1 comprises:

[0023] Formula A: 58 parts of graphite powder, 8 parts of natural rubber, 8 parts of aramid fiber, 0.8 part of sulfur, 0.8 part of accelerator, and 0.8 part of antiaging agent, the above are parts by weight.

[0024] Formula B: 60 parts of graphite powder, 10 parts of natural rubber, 10 parts of aramid fiber, 1 part of sulfur, 1 part of accelerator, 1 part of anti-aging agent, the above are parts by weight.

[0025] Formula C: 62 parts of graphite powder, 12 parts of natural rubber, 12 parts of aramid fiber, 1.2 parts of sulfur, 1.2 parts of accelerator, 1.2 parts of anti-aging agent, the above are parts by weight.

[0026] The accelerator in the above formula is 2-mercaptobenzothiazole or dithiodibenzothiazole, the anti-aging ...

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Abstract

The invention discloses a production method for a sealing gasket, which is characterized by comprising the following steps of: 1, according to a prescription, stirring graphite powder, rubber, reinforced fibres and an antiager in a stirrer, uniformly mixing, and then discharging; 2, adding an accelerant in the mixture after discharging, uniformly mixing, then placing the mixture in a mould, and tabletting at normal temperature; 3, adding a metal layer between two tablets to form a composite tablet, and performing rolling vulcanization on the composite tablet in a vulcanization machine having a vulcanization temperature which is controlled to be 165-200 DEG C, so as to obtain a semi-finished product; and 4, stamping the semi-finished product after vulcanization into the needed sealing gasket, namely, the finished product. Compared with the prior art, the production method disclosed by the invention has the advantages that the production process is simple, and the operation is safe and convenient; natural rubber is high in elasticity, so that the produced sealing gasket is good in elasticity and plasticity, and resistant to corrosion and wear; and the sealing gasket is not easy to age via the rolling vulcanization.

Description

technical field [0001] The invention relates to the technical field of manufacturing seals, in particular to a method for manufacturing a sealing gasket. Background technique [0002] In the prior art, the Chinese invention patent with the application number CN200910094494.3 titled "A Method for Preparing Sheets Used for Sealing Gaskets" relates to a method for manufacturing sealing gaskets, especially for sealing gaskets that do not contain asbestos fibers. The invention relates to a method for preparing a sheet material for a gasket, and relates to the field of sealing materials. The main components of the sheet material copied by this invention are mineral wool fiber, cellulose fiber, aromatic polyamide fiber, rubber binder and kaolin, which are mixed into an aqueous dispersion system, which is gradually dehydrated into layers by the papermaking process, and then compressed, Dried and vulcanized, manufactured into a finished sheet. The sealing gasket made of this board ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/06B32B37/10B32B37/15C08L7/00C08K13/02C08K3/04
Inventor 张松青
Owner DAISHAN WEIER SEALING MEMBER CO LTD
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