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Pressure-resistant waterproof rubber sealing ring and preparation method thereof

A rubber sealing ring, pressure-resistant technology, applied in the field of pressure-resistant waterproof rubber sealing ring and its preparation, can solve the problems of fatigue, sealing performance decline, failure and the like

Pending Publication Date: 2021-05-14
张达
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The performance of the material directly affects the performance of the sealing ring, but the existing sealing ring is prone to fatigue due to the external pressure during use, resulting in a rapid decline in sealing performance or even failure

Method used

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  • Pressure-resistant waterproof rubber sealing ring and preparation method thereof
  • Pressure-resistant waterproof rubber sealing ring and preparation method thereof
  • Pressure-resistant waterproof rubber sealing ring and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] see figure 1 , a pressure-resistant waterproof rubber sealing ring, comprising the following raw materials in parts by weight: 80 parts of natural rubber, 30 parts of nitrile rubber, 2 parts of stearic acid, 6 parts of reinforcing agent, 2 parts of sulfur powder, accelerator 0.5 parts, 1 part of activated magnesium oxide, 2 parts of filler, 5-8 parts of epoxidized soybean oil, 2.5 parts of carnauba wax, 2 parts of anti-aging agent, 1-part of ethyl methacrylate, 10 parts of shellac paint flakes, hydrophobic 15 parts of permanent silica and 30 parts of pressure-resistant pack.

[0042] The reinforcing agent is one of carbon black, high wear-resistant white carbon black, precipitated calcium carbonate or zinc oxide.

[0043] The accelerator is one of accelerator PZ, accelerator DM, accelerator TMTD and accelerator CZ.

[0044] The filler is one of nano clay, calcium silicate, bentonite, kaolin and mica powder.

[0045] The anti-aging agent is any one or more combination...

Embodiment 2

[0056] A pressure-resistant waterproof rubber sealing ring, comprising the following raw materials in parts by weight: 90 parts of natural rubber, 40 parts of nitrile rubber, 3 parts of stearic acid, 7 parts of reinforcing agent, 2.5 parts of sulfur powder, and 1.5 parts of accelerator 2 parts, active magnesium oxide 2 parts, filler 3 parts, epoxidized soybean oil 6 parts, carnauba wax 3 parts, antioxidant 2.5 parts, ethyl methacrylate 1.5 parts, shellac varnish flakes 11 parts, hydrophobic silica 20 servings and 40 servings in pressure-resistant packs.

[0057] A preparation method of a pressure-resistant waterproof rubber sealing ring, comprising the following steps:

[0058] S1. Weigh natural rubber and nitrile rubber, put them into the open mill, heat to 32°C, set the roller distance to 0.5mm, masticate for 12min, and then go through deglue, tablet, tablet, cool to room temperature and park for 4.5h get plastic rubber;

[0059] S2. Weigh stearic acid, reinforcing agent, ...

Embodiment 3

[0064] A pressure-resistant waterproof rubber sealing ring, comprising the following raw materials in parts by weight: 100 parts of natural rubber, 50 parts of nitrile rubber, 3.5 parts of stearic acid, 8 parts of reinforcing agent, 3 parts of sulfur powder, and 2 parts of accelerator 3 parts of active magnesium oxide, 4 parts of filler, 8 parts of epoxidized soybean oil, 3.5 parts of carnauba wax, 3 parts of anti-aging agent, 2 parts of ethyl methacrylate, 12 parts of shellac paint flakes, hydrophobic silica 25 servings and 45 servings in pressure-resistant packs.

[0065] A preparation method of a pressure-resistant waterproof rubber sealing ring, comprising the following steps:

[0066] S1. Weigh natural rubber and nitrile rubber, put them into an open mill, heat to 35°C, set the roller distance to 0.8mm, masticate for 15min, and then go through rubber removal, tablet pressing, tablet removal, cooling to room temperature and parking for 5h to obtain plastic rubber;

[006...

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Abstract

The invention discloses a pressure-resistant waterproof rubber sealing ring and a preparation method thereof, and belongs to the technical field of sealing rings. According to the pressure-resistant waterproof rubber sealing ring and the preparation method thereof, the comprehensive performance of rubber can be improved by improving raw materials, meanwhile, a pressure-resistant bag is introduced and embedded between working faces, and the pressure in the working direction is sensed through a pair of force contact pieces. The pressure is fed back to a feedback air bag in the middle through a force transmission rod, meanwhile, the change of magnetic fluid in a magnetic control bag is controlled through the deformation of the feedback air bag, and when the sealing ring slightly deforms due to the too large pressure, the feedback air bag forms an extrusion effect on the magnetic fluid diffusing towards the edge. Further, the magnetic field shielding effect of the magnetic fluid on a pair of repulsive magnets is weakened, the magnetic repulsive effect between the pair of repulsive magnets is enhanced, meanwhile, external pressure is resisted to assist the sealing ring in shape restoring, the good sealing performance is restored, compression resistance protection is conducted on the sealing ring, and meanwhile the service life of the sealing ring can be remarkably prolonged.

Description

technical field [0001] The invention relates to the technical field of sealing rings, in particular to a pressure-resistant waterproof rubber sealing ring and a preparation method thereof. Background technique [0002] Rubber (Rubber) refers to a highly elastic polymer material with reversible deformation. It is elastic at room temperature, can produce large deformation under a small external force, and can return to its original shape after the external force is removed. Rubber is a completely amorphous polymer with a low glass transition temperature and often a large molecular weight, greater than hundreds of thousands. [0003] Rubber is divided into two kinds of natural rubber and synthetic rubber. Natural rubber is processed by extracting gum from rubber trees, rubber grass and other plants; synthetic rubber is obtained by polymerization of various monomers. Rubber products are widely used in all aspects of industry or life. [0004] Natural rubber has high tensile s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/02C08K13/02C08K3/36C08K3/22C08K5/09
CPCC08L7/00C08K2003/222C08L9/02C08K13/02C08K3/36C08K3/22C08K5/09
Inventor 张娜张明明
Owner 张达
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