Composite seal ring and manufacturing process thereof

A composite material and sealing ring technology, applied in the field of composite material sealing ring and its manufacturing process, can solve the problems of large compression set, poor tear resistance, poor aging resistance, etc., achieve good tear resistance, improve resistance Tear and strength properties, good sealing effect

Active Publication Date: 2014-12-10
MAANSHAN HONGLI RUBBER PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the prior art that the rubber sealing ring used for hydrostatic testing has poor tear resistance, low hardness, large compression set and aging resistance, the present invention provides a composite material sealing ring and its manufacturing process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of composite sealing ring of the present embodiment is made up of the raw material of following parts by weight:

[0032] 10 parts of natural rubber, 100 parts of styrene-butadiene rubber, 10 parts of high styrene resin, 10 parts of zinc oxide, 1 part of stearic acid, 2 parts of accelerator DM, 0.5 parts of accelerator CBS, 3 parts of anti-aging agent RD, 1 part of anti-aging agent 4010NA , 10 parts of petroleum resin, 20 parts of high wear-resistant carbon black, 100 parts of general carbon black, 0.5 parts of sulfur, 20 parts of vinylon staple fiber masterbatch.

[0033] The manufacturing process of a kind of composite sealing ring of the present embodiment, its steps are:

[0034] 1) Firstly, make vinylon staple fiber masterbatch: put 4 parts of natural rubber on the mill for 0.5-2 mm thin pass, add 19.5 parts of vinylon canvas and 0.5 part of stearic acid, mix evenly, and set aside;

[0035] 2) Then 4 parts of natural rubber are masticated on the open mill, ...

Embodiment 2

[0046] A kind of composite material sealing ring of this embodiment, after repeated tests and record analysis, just determined their optimal weight ratio: 30 parts of natural rubber, 40 parts of styrene-butadiene rubber, 30 parts of high styrene resin, oxidized 5 parts of zinc, 1.5 parts of stearic acid, 1 part of accelerator DM, 1.2 parts of accelerator CBS, 1.5 parts of anti-aging agent RD, 1.5 parts of anti-aging agent 4010NA, 3 parts of petroleum resin, 60 parts of high wear-resistant carbon black, general purpose 30 parts of carbon black, 2 parts of sulfur, 10 parts of vinylon staple fiber masterbatch.

[0047] The manufacturing process of a kind of composite material sealing ring of the present embodiment, its step is basically the same as embodiment 1, the difference is that the raw material weight part that adds is different, the rubber sealing ring that a kind of composite material sealing ring of the present embodiment produces has compression Low permanent deformati...

Embodiment 3

[0049] A kind of composite sealing ring of the present embodiment is made up of the raw material of following parts by weight:

[0050] 100 parts of natural rubber, 10 parts of styrene-butadiene rubber, 100 parts of high styrene resin, 2 parts of zinc oxide, 3 parts of stearic acid, 0.5 parts of accelerator DM, 2 parts of accelerator CBS, 1 part of anti-aging agent RD, 3 parts of anti-aging agent 4010NA , 2 parts of petroleum resin, 100 parts of high wear-resistant carbon black, 20 parts of general-purpose carbon black, 4 parts of sulfur, and 3 parts of vinylon staple fiber masterbatch.

[0051] The manufacturing process of a composite material sealing ring in this embodiment is basically the same as that in embodiment 1, except that the weight of raw materials added is different.

[0052] The rubber sealing ring produced by a composite material sealing ring in this embodiment has the best elasticity, but the tear resistance is slightly inferior, which can only reach 40-50KN / M...

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PUM

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Abstract

The invention discloses a composite seal ring and a manufacturing process of the composite seal ring, and belongs to the field of manufacturing of a rubber seal ring. The composite seal ring comprises the materials of 10-100 parts of natural rubber, 10-100 parts of butadiene styrene rubber, 10-100 parts of high styrene resin, 2-10 parts of zinc oxide, 1-3 parts of stearic acid, 0.5-2 parts of accelerant DM, 0.5-2 parts of accelerant CBS, 1-3 parts of antiager RD, 1-3 parts of antiager 4010NA, 2-10 parts of petroleum resin, 20-100 parts of high abrasion furnace black, 20-100 parts of general purpose furnace black, 0.5-4 parts of sulphur, and 3-20 parts of vinylon cut fiber masterbatch. The manufacturing process provided by the invention innovatively manufactures the vinylon cut fiber masterbatch first, and additionally uses a short fiber to directionally arranged in the rubber during extruding formation, so that a working surface has a higher tear strength, and the subsection sulfuration in the sulfuration process leads to uniform and consistent sulfuration degree. The seal ring manufactured by using the manufacturing process has the effects of low compression deformation, excellent elasticity, high hardness, excellent tearing strength, and good sealing effect.

Description

technical field [0001] The invention relates to the manufacturing field of sealing rings made of rubber materials, in particular to a composite material sealing ring and a manufacturing process thereof. Background technique [0002] Domestic ductile iron pipe enterprises need to carry out hydrostatic test for each cast pipe during factory inspection. Both ends of the cast pipe socket should be sealed with sealing rings, and water should be injected into the cast pipe to reach the specified nominal pressure for a period of time. The contact area at the spigot end of the cast pipe is very small, so it needs to bear a large mechanical shear force. The currently used sealing ring products cannot meet the needs of such production operations, and often appear tearing, deformation, etc. within a short period of time and lose their use value. The main reason is that the formula design is unreasonable: the original product rubber formula design Ordinary rubber is generally used, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/06C08L25/10C08K13/02C08K3/22C08K5/09C08K3/04C08K3/06C08J3/22B29C35/02
Inventor 高法训常勤辉刘明保吴茂楠高虹
Owner MAANSHAN HONGLI RUBBER PROD
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