Fatigue-resistant water-swelling rubber ring

A technology that expands rubber and natural rubber in contact with water. It is used in mechanical equipment, engine components, and engine sealing. It can solve problems such as poor fatigue resistance and short service life, and achieve outstanding tensile properties, increased service life, and fracture elongation. The effect of lengthening

Active Publication Date: 2021-06-22
SHANGHAI QINGYUAN PIPE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fatigue resistance of the water-swellable rubber is poor. Generally, the repeated water-swelling rate is lower than 250% when repeated water-swelling reaches 4-6 times, and the service life is short.

Method used

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  • Fatigue-resistant water-swelling rubber ring
  • Fatigue-resistant water-swelling rubber ring
  • Fatigue-resistant water-swelling rubber ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] see figure 1 , figure 2 , the water-swellable rubber ring of the present embodiment includes a water-swellable rubber ring body 1, and one end of the water-swellable rubber ring body 1 is provided with a first stop ring 11 protruding outward, and the water-swellable rubber ring The middle part of the main body is provided with a second stop ring 12 protruding outward. The cross-sectional shapes of the first stop ring 11 and the second stop ring 12 are the same, and their outer ends are arc-shaped with a width of 4-8 mm.

[0026] The usage status of the water-swellable rubber ring in this embodiment is as follows: image 3 As shown, when performing socket installation, the water-expandable rubber ring 1 is set on the socket end of a pipe 2 to the position of the stop ring 21, and socketed to the socket end of another pipe 3 with the same diameter. During the process of socket insertion, the two stop rings 11 and 12 on the outer edge of the water-swellable rubber ring...

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Abstract

The invention relates to a water-swelling rubber ring which comprises a water-swelling rubber ring body, wherein a first check ring protruding outwards is arranged at one end of the water-swelling rubber ring body, and a second check ring protruding outwards is arranged in the middle of the water-swelling rubber ring body; the water-swelling rubber ring body is prepared from the following raw materials in parts by weight: 10 to 100 parts of natural rubber, 10 to 100 parts of chloroprene rubber, 10 to 80 parts of polyacrylamide, 20 to 60 parts of superfine calcium carbonate, 0.5 to 10 parts of dicumyl peroxide, 0.5 to 10 parts of magnesium oxide, 0.1 to 10 parts of an accelerant DETU, 0.5 to 10 parts of zinc oxide, 0.5 to 10 parts of stearic acid and 0.5 to 20 parts of chlorinated polyethylene. Compared with the prior art, the fatigue-resistant water-swelling rubber ring disclosed by the invention has the advantages of higher mechanical property, excellent water absorption swelling rate, excellent fatigue resistance, capability of repeatedly absorbing water and swelling for more than 25 times, good sealing property, no leakage. The rubber ring can be widely applied to complex environments such as various tunnels, underground and underwater engineering or environments where the rubber ring is inconvenient to replace frequently.

Description

technical field [0001] The invention relates to sealing materials, in particular to a fatigue-resistant water-swellable rubber ring. Background technique [0002] The water-swellable rubber ring is made by putting rubber, water-absorbing resin and some additives into the rubber ring mold. It can maintain the high elasticity of the rubber and resist compression deformation while having the functions of water absorption and water retention. Therefore, it is often used in Drainage, tunnel and other places. However, the fatigue resistance of the water-swellable rubber rings currently on the market is relatively poor, resulting in a short service life, and the rubber rings cannot be frequently replaced with new rubber rings for buried drainage pipes, tunnels, etc., so restrictions the field of its application. [0003] Utility model patent CN201902752U reports "water-swellable rubber". The above-mentioned patent is provided with a first stop ring protruding outward at one end ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L11/00C08L7/00C08L33/26C08L23/28C08K13/02C08K3/26C08K5/14C08K3/22C08K5/09F16J15/10
CPCC08L11/00F16J15/102F16J15/108C08L2205/035C08K2003/265C08K2003/222C08K2003/2296C08L7/00C08L33/26C08L23/286C08K13/02C08K3/26C08K5/14C08K3/22C08K5/09
Inventor 苏长裕李佳君
Owner SHANGHAI QINGYUAN PIPE TECH
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