an o-ring seal

An O-ring and modified technology, applied in the field of sealing rings, can solve problems such as failure to effectively ensure the sealing, damage and hardening of the oil circuit and gas circuit of the machine, and achieve the effect of enhancing bending elasticity, prolonging service life and improving mechanical properties.

Active Publication Date: 2021-05-18
MAANSHAN WEILIJIAN MACHINERY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the process of repeated practice, due to the phenomenon of hardening and damage of the O-ring during the long-term anti-corrosion extrusion process, it is impossible to effectively ensure the sealing of the oil circuit and air circuit of the machine connection, resulting in irreparable consequences

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Polypropylene, mica, and magnesium sulfate whiskers were mixed and stirred at 80°C for 15 minutes in a high-speed mixer, with the mass ratio of mica and magnesium sulfate whiskers being 2:1, to obtain modified polypropylene.

[0029] Put butyl rubber and trichloroacetic acid on an open mill and knead for 15 minutes to obtain modified butyl rubber.

[0030] An O-shaped sealing ring, comprising the following raw materials in parts by weight: modified polypropylene: 18 parts, modified butyl rubber: 20 parts, natural rubber 15 parts, zinc oxide 5 parts, calcium stearate 9 parts, 5 parts of morpholine disulfide, 7 parts of antioxidant, 5 parts of oxidized polyethylene, and 5 parts of talcum powder.

[0031] The preparation method of above-mentioned O type sealing ring, comprises the following steps:

[0032] (1) According to the proportion by weight, the modified butyl rubber, modified polypropylene and natural rubber were heated and dissolved, stirred and mixed, and intern...

Embodiment 2

[0037] Polypropylene, mica, and magnesium sulfate whiskers were mixed and stirred at 90°C for 8 minutes in a high-speed mixer, with the mass ratio of mica and magnesium sulfate whiskers being 2:1, to obtain modified polypropylene.

[0038] Put butyl rubber and trichloroacetic acid on an open mill and knead for 8 minutes to obtain modified butyl rubber.

[0039] An O-shaped sealing ring, comprising the following raw materials in parts by weight: modified polypropylene: 25 parts, modified butyl rubber: 27 parts, natural rubber 10 parts, zinc oxide 8 parts, calcium stearate 6 parts, 7 parts of morpholine disulfide, 4 parts of antioxidant, 10 parts of oxidized polyethylene, 10 parts of talcum powder.

[0040] The preparation method of above-mentioned O type sealing ring, comprises the following steps:

[0041] (1) According to the weight ratio, the modified butyl rubber, modified polypropylene, and natural rubber were heated and dissolved, stirred and mixed, and banburyed at 80° ...

Embodiment 3

[0046] Mix polypropylene, mica, and magnesium sulfate whiskers in a high-speed mixer with a mass ratio of mica and magnesium sulfate whiskers of 2:1, and mix and stir at 85°C for 10 minutes to obtain modified polypropylene.

[0047] Put butyl rubber and trichloroacetic acid on an open mill and knead for 9 minutes to obtain modified butyl rubber.

[0048] An O-shaped sealing ring, comprising the following raw materials in parts by weight: 20 parts of modified polypropylene, 25 parts of modified butyl rubber, 12 parts of natural rubber, 7 parts of zinc oxide, 8 parts of stearic acid, disulfide 7 parts of morpholine, 5 parts of antioxidant, 7 parts of oxidized polyethylene, 7 parts of talcum powder.

[0049] The preparation method of above-mentioned O type sealing ring, comprises the following steps:

[0050] (1) According to the proportion by weight, the modified butyl rubber, modified polypropylene, and natural rubber were heated and dissolved, stirred and mixed, and banburyed...

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Abstract

The invention relates to an O-shaped sealing ring, which relates to the field of sealing rings, and comprises the following raw materials in parts by weight: modified polypropylene: 18-25 parts, modified butyl rubber: 20-27 parts, natural rubber 10-15 parts 5-8 parts of zinc oxide, 6-9 parts of calcium stearate, 5-7 parts of morpholine disulfide, 4-7 parts of antioxidant, 5-10 parts of polyethylene oxide, 5-10 parts of talcum powder, The invention effectively improves the sealing performance of the O-shaped sealing ring by optimizing the formula and using novel materials.

Description

technical field [0001] The invention relates to the field of sealing rings, in particular to an O-shaped sealing ring. Background technique [0002] O-ring, a rubber ring with a circular cross-section, is called an O-ring because of its O-shaped cross-section. It is widely used in pneumatic devices and hydraulic devices. Its material is usually NBR. The ability of O-ring to deform elastically can effectively improve the sealing performance of pneumatic devices and hydraulic devices. [0003] However, in the process of repeated practice, because the O-ring will harden and damage during the long-term anti-corrosion extrusion process, it cannot effectively ensure the sealing of the oil circuit and air circuit of the machine connection, resulting in irreparable consequences. Contents of the invention [0004] (1) Solved technical problems [0005] Aiming at the deficiencies of the prior art, the invention provides an O-shaped sealing ring, which can effectively improve the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/22C08L23/12C08L7/00C08L23/30C08K13/02C08K3/22C08K3/34C08K5/098
CPCC08K2003/2296C08L23/22C08L2205/035C08L23/12C08L7/00C08L23/30C08K13/02C08K3/22C08K3/34C08K5/098
Inventor 周煜吴尧
Owner MAANSHAN WEILIJIAN MACHINERY TECH CO LTD
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