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Rubber sealing washer and method of manufacturing the same

A technology of rubber sealing ring and natural rubber, which is applied in the direction of engine sealing, mechanical equipment, engine components, etc., can solve problems such as construction and maintenance difficulties, and achieve the effect of reducing construction difficulty and facilitating disassembly and maintenance

Inactive Publication Date: 2003-06-11
HEBEI HUA HONG ENG MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when only one socket sealing ring in the pipeline is damaged and needs to be replaced, almost all the pipelines must be dismantled. Therefore, the sealing rings used in the existing water pipeline sockets have the disadvantage of not expanding themselves, which makes construction, especially maintenance, difficult.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] That is, the following examples are combined: the process method for preparing the water-absorbing swellable rubber sealing ring proposed by the present invention will be further described in detail:

example 1

[0030] The first step: plasticizing natural rubber

[0031] ① First take 48 kg of natural rubber and crush it;

[0032] ② Adjust the distance between the front and rear rollers of the rubber mixing machine to 1mm, add the broken natural rubber to it, and thin the rubber 15 times;

[0033] ③Adjust the distance between the front and rear rollers of the rubber mixing machine to 8mm, then press the thin rubber sheet into a smooth 8mm thick film, apply light calcium carbonate as a release agent, and park for 22 hours;

[0034] Step 2: mixing

[0035] ①Add 15 kg of butadiene rubber to the smooth rubber sheet made by the plasticizing process and put it into the rubber mixing machine with the distance between the front and back rollers adjusted to 1.5mm, and press the thin rubber sheet;

[0036] ②Add 2.0 kg of zinc oxide powder and 0.6 kg of stearic acid to roll evenly, then adjust the distance between the front and back rolls of the rubber mixer to 4 mm, and add 7 kg of light calcium, 12...

example 2

[0045] The first step: plasticizing natural rubber

[0046] ①First take 51 kg of natural rubber and crush it;

[0047] ②Adjust the distance between the front and rear rollers of the rubber mixing machine to 1.5mm, add the broken natural rubber to it, and thin the rubber 12 times;

[0048] ③Adjust the distance between the front and rear rollers of the rubber mixing machine to 5mm, then press the thin rubber sheet into a 5mm thick smooth film, apply talcum powder as a release agent, and leave it for 24 hours;

[0049] Step 2: mixing

[0050] ①Add 10 kg of butadiene rubber to the plasticized smooth rubber and put it into the mixing machine with the distance between the front and back rollers adjusted to 1mm, and press the thin pass;

[0051] ②Add 1.8 kg of zinc oxide powder and 0.8 kg of stearic acid to roll evenly, then adjust the distance between the front and back rolls of the rubber mill to 5 mm, and add 6 kg of light calcium, 13 kg of porcelain clay and After 3 kg of silica powd...

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PUM

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Abstract

The invention discloses a rubber sealed ring and the manufacturing method; it belongs to rubber product field. It crushes the natural rubber and adds in butyl rubber and presses, then adds in fillers which are made up of light calcium, porcelain clay, silicon minim powder; the accelerant of zinc oxygen powder, stearic acid; softening agent of a-benzene phthalein acid and oxalic acid; aging-resistant agent; vulcanizer; coloring agent in order, through repeatedly pressing, carries into squeezer to squeeze and fix, then fixes it through vulcanizing craft, then gets the rubber sealed ring which has absorbing swell and shrinking back performance.

Description

Technical field: [0001] The invention belongs to the technical field of rubber products, and specifically discloses a rubber sealing ring capable of absorbing water to expand, shrink and recover, and a preparation method thereof. Background technique: [0002] At present, all kinds of long-distance water pipelines are connected by cement pipes or anticorrosive iron pipes or pipes of other materials, buried deep underground or elevated in the air. During the construction of the water pipeline, since the sealing ring placed in the pipe socket cannot expand with water, the pipe must be squeezed during construction to achieve the effect of sealing the socket. However, when only one socket seal ring in the pipeline is damaged and needs to be replaced, almost all the pipes must be removed. Therefore, the existing seal ring used in the water pipeline socket has the disadvantage that it does not expand, which makes construction and especially maintenance difficult. . Summary of the inve...

Claims

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Application Information

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IPC IPC(8): F16J15/02
Inventor 王德成王芳亚连行
Owner HEBEI HUA HONG ENG MATERIALS
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