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Manufacturing process of high-fluorine-content rubber sealing plate

A fluorine-containing rubber and manufacturing process technology, applied in flat products, applications, household appliances, etc., can solve the problems of not exceeding 220°C, narrow application fields, and low temperature resistance, and achieve good compactness, improved performance, and compression resistance strong effect

Inactive Publication Date: 2020-04-28
舟山海山机械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

[0002] The sealing plate is the primary material used to make sealing elements such as gaskets. It is made into sealing elements such as gaskets by cutting, stamping or cutting processes. It is used for the sealing connection between pipelines and between parts of machinery and equipment. The flange surface is sealed and connected, and the conventional fiber rubber sealing materials are made of asbestos fiber, aramid fiber, ceramic fiber as aggregate, kaolin, calcium carbonate and other silicate powder as filler, after strong opening, stirring and mixing, adding Sulfur, zinc oxide and other rubber vulcanization crosslinking agents are extruded by cold small rolls and hot large rolls to a certain thickness and opened into pieces. The sealing material is composed of nitrile rubber as the adhesive. The temperature is not high. The maximum temperature resistance of pure rubber is 120°C. The maximum temperature of the sealing material modified by inorganic fiber and kaolin and other mineral fillers cannot exceed 220°C. At the same time, it is also not resistant to methanol gasoline and other media, and the application field is narrow.

Method used

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  • Manufacturing process of high-fluorine-content rubber sealing plate
  • Manufacturing process of high-fluorine-content rubber sealing plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: A kind of high fluorine-containing rubber sealing plate manufacturing process, comprising the following steps:

[0019] 1) Opening: 3 parts of aramid pulp fiber, 5 parts of glass fiber, 18 parts of activated white carbon black, 15 parts of light calcium, 3 parts of magnesium oxide, 10 parts of kaolin, 1 part of cross-linked Agent and 2 parts of silane coupling agent are put into the opener with high-speed flying knife for dispersion;

[0020] 2) Foam rubber: according to the number of parts, 1 part of granular high fluorine rubber is soaked in 1.8 parts of solvent prepared in advance. The solvent is made of 2 parts of ketone and 1 part of butyl ester. Soaking is beneficial to increase the rubber Dispersion performance, which is conducive to the uniform combination with other materials in subsequent processes;

[0021] 3) Mixing: Put the crushed auxiliary materials into the mixer, then add the soaked high-fluorine rubber glue, stir and pull the rubber in t...

Embodiment 2

[0025] A high fluorine-containing rubber sealing plate manufacturing process, comprising the following steps:

[0026] 1) Opening: 6 parts of aramid pulp fiber, 13 parts of ceramic fiber, 20 parts of activated white carbon black, 17 parts of light calcium, 5 parts of magnesium oxide, 18 parts of kaolin, 3 parts of crosslinked Agent and 6 parts of silane coupling agent are put into the opener with high-speed flying knife for dispersion;

[0027] 2) Foam rubber: according to the number of parts, 1 part of granular high fluorine rubber is soaked in 1.8 parts of solvent prepared in advance, and the solvent is made of 2 parts of ketone and 1 part of butyl ester;

[0028] 3) Mixing: Put the crushed auxiliary materials into the mixer, then add the soaked high-fluorine rubber glue, stir and pull the rubber in the mixer until there are no rubber particles, and control the pulling time to 40 ~50 minutes, then gradually add phenolic resin, mix until there is no hard lumps, spots, and oi...

Embodiment 3

[0032] A high fluorine-containing rubber sealing plate manufacturing process, comprising the following steps:

[0033] 1) Opening: 10 parts of aramid pulp fiber, 25 parts of ceramic fiber, 25 parts of activated white carbon black, 21 parts of light calcium, 8 parts of magnesium oxide, 25 parts of kaolin, 5 parts of crosslinking Agent and 8 parts of silane coupling agent are put into the opener with high-speed flying knife for dispersion;

[0034] 2) Foam rubber: according to the number of parts, 1 part of granular high fluorine rubber is soaked in 1.8 parts of solvent prepared in advance, and the solvent is made of 2 parts of ketone and 1 part of butyl ester;

[0035] 3) Mixing: Put the crushed auxiliary materials into the mixer, then add the soaked high-fluorine rubber glue, stir and pull the rubber in the mixer until there are no rubber particles, and control the pulling time to 40 ~50 minutes, then gradually add phenolic resin, mix until there is no hard lumps, spots, and ...

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PUM

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Abstract

The invention discloses a manufacturing process of a high-fluorine-content rubber sealing plate. The process comprises the steps of opening, rubber soaking, material mixing, sheet forming and vulcanizing. The manufactured sealing plate is good in compactness, high in tensile strength and excellent in sealing performance; the sealing plate is incomparable to asbestos and asbestos-fiber-free nitrilerubber sealing materials; a collagenous fiber sealing material obtained through the process can be used for sealing gaskets of pipeline flanges of engines, engineering machinery and the like at the temperature ranging from -42 DEG C to 300 DEG C, on the premise that the performance is improved, the cost can be reduced by 50%, the application range is enlarged, and the problem of the use cost of general users is solved.

Description

technical field [0001] The invention relates to the technical field of sealing material manufacturing technology, in particular to a manufacturing technology of high fluorine-containing rubber sealing plate. Background technique [0002] The sealing plate is the primary material used to make sealing elements such as gaskets. It is made into sealing elements such as gaskets by cutting, stamping or cutting processes. It is used for the sealing connection between pipelines and between parts of machinery and equipment. The flange surface is sealed and connected, and the conventional fiber rubber sealing materials are made of asbestos fiber, aramid fiber, ceramic fiber as aggregate, kaolin, calcium carbonate and other silicate powder as filler, after strong opening, stirring and mixing, adding Sulfur, zinc oxide and other rubber vulcanization crosslinking agents are extruded by cold small rolls and hot large rolls to a certain thickness and opened into pieces. The sealing materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/12C08L77/00C08L61/06C08K13/04C08K7/26C08K7/04C08K3/22C08K3/34C08J5/18B29C43/58B29C35/02
CPCC08J5/18B29C43/58B29C35/02C08J2327/12C08J2477/00C08J2461/06C08K13/04C08K7/26C08K7/04C08K2003/222C08K3/346B29C2043/5816B29L2007/002
Inventor 施中堂姚志海
Owner 舟山海山机械密封材料股份有限公司
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