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Oil-resistant sealing rubber ring and vulcanization method

A technology for sealing rubber rings and rubber rings, which is applied in the direction of engine sealing, mechanical equipment, engine components, etc., can solve the problem that the oil resistance performance has not been significantly improved, and achieve the effect of improving oil resistance

Pending Publication Date: 2019-09-27
安徽拓盛汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mechanical properties of vulcanized rubber have been improved, but the oil resistance has not been significantly improved

Method used

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  • Oil-resistant sealing rubber ring and vulcanization method
  • Oil-resistant sealing rubber ring and vulcanization method
  • Oil-resistant sealing rubber ring and vulcanization method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The raw rubber slurry is mixed with the micro air cells to form a mixed slurry, which is injected into the mold and cured to form the rubber ring body 1, and the rubber ring body 1 is placed in the heating chamber for steam vulcanization, and the micro air cells in the rubber ring body 1 Heat and rupture from the outer layer to the inner layer in turn to form an air cavity 2. The gaseous hot sulfur content enters the air cavity 2 inside the rubber ring body 1 for vulcanization. The vulcanized rubber ring body 1 is immersed in the fluorinated rubber slurry, taken out and cured After that, an oil-resistant sealing rubber ring is formed.

[0054] The annular rubber ring body 1 is provided with honeycomb-shaped and interconnected air chambers 2, the outer surface of the rubber ring body 1 is covered with a fluorinated rubber layer 4, the rubber ring body 1 provides sufficient mechanical elasticity, and the fluorinated rubber layer 4 has sufficient oil resistance;

[0055] ...

Embodiment 2

[0057] The magnetic powder is used as a condensation nucleus, and the solid gas is condensed in a low temperature and high pressure environment to form composite powdery particles. After the particles are accelerated and bombarded with the plastic melt film, small particles wrapped by the plastic melt are formed. After the temperature rises, the solid The gas powder recovers to gaseous state and expands to form micro-airbags. However, during this process, there are some plastic films that do not completely cover the magnetic powder and enter the separation tank. The liquid with a density less than that of solid plastic is filled in the separation tank, and the objects floating on the liquid surface are micro-airbags. , place the mixed slurry in a uniform constant magnetic field, and then perform the curing operation after the micro-airbags stop moving, use the magnetic field to arrange the magnetic micro-airbags evenly and tightly, and the air cavity 2 generated after the micro-...

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Abstract

The invention discloses an oil-resistant sealing rubber ring and a vulcanization method. The oil-resistant sealing rubber ring comprises an annular rubber ring body, honeycomb-shaped gas cavities communicating with one another are arranged in the rubber ring body, and the outer surface of the rubber ring body is covered with a fluorinated rubber layer. In the oil-resistant sealing rubber ring and the vulcanization method, the high elasticity of vulcanized rubber is kept, meanwhile, the oil resistance is also improved, the honeycomb-shaped gas cavities communicating with one another are arranged in the annular rubber ring body, the outer surface of the rubber ring body is covered with the fluorinated rubber layer, the rubber ring body provides the enough mechanical elasticity, the fluorinated rubber layer has the sufficient oil resistance, natural rubber is difficult to melt again after being vulcanized and crosslinked, in the case of a conventional technology, injection molding and shaping are performed firstly and then vulcanizing is performed, so that the formed rubber ring becomes a solid whole, and the vulcanization steam is difficult to permeate into the solid whole for sufficient vulcanization; and after micro air bags in the rubber ring body are broken, the gas cavities are formed, and after sulfur steam enters the gas cavities, vulcanization is more sufficient.

Description

technical field [0001] The invention relates to the field of rubber sealing rings, in particular to an oil-resistant sealing rubber ring and a vulcanization method. Background technique [0002] The rubber sealing ring is an elastic sealing structure made of natural rubber. Natural rubber becomes soft when heated, becomes hard and brittle when cooled, is not easy to form, is easy to wear, and is easily soluble in organic solvents such as gasoline. It has double bonds in the molecule, which is easy to cause addition reaction and aging. In order to improve the performance of rubber products, a series of processing processes must be carried out on the raw rubber in production. Under certain conditions, the raw rubber in the rubber compound and the vulcanizing agent undergo a chemical reaction, so that the macromolecular crosslinking of the linear structure becomes The macromolecules of the three-dimensional network structure make the rubber compound have excellent properties s...

Claims

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Application Information

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IPC IPC(8): B29C45/00B29C35/04F16J15/00
CPCB29C35/049B29C45/0013F16J15/00
Inventor 朱成曾昭胜江勇姚秀全
Owner 安徽拓盛汽车零部件有限公司