CN105237845A - High-pressure-resistant sealing material and preparation method thereof - Google Patents
High-pressure-resistant sealing material and preparation method thereof Download PDFInfo
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- CN105237845A CN105237845A CN201510712069.1A CN201510712069A CN105237845A CN 105237845 A CN105237845 A CN 105237845A CN 201510712069 A CN201510712069 A CN 201510712069A CN 105237845 A CN105237845 A CN 105237845A
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Abstract
The invention provides a high-pressure-resistant sealing material prepared with the components of, by mass, 85-95 parts of hydrogenated nitrile rubber, 15-20 parts of natural rubber, 5-8 parts of diacetyl peroxide, 1-2 parts of octyltin maleate, 5-8 parts of stearic acid, 1-2 parts of allyl alcohol, 5-8 parts of drying oil alkyd resin, 4-6 parts of methyl hydrogen silicone oil, 2-3 parts of ethylene glycol, 1-2 parts of paraffin, 1-2 parts of diethanolamine borate, 0.8-1.2 parts of calcium carbonate, 3-6 parts of alumina, 3-5 parts of white carbon black, 0.5-2 parts of an anti-aging agent, and 1-3 parts of sulfur. The invention also provides a preparation method of the material. The sealing material provided by the invention has low friction coefficient (0.21-0.23), and has a long service life (110-130 days) under working conditions with high temperature (210 DEG C) and high pressure (280MPa).
Description
Technical field
The present invention relates to a kind of high-pressure resistant sealing material and preparation method thereof.
Background technology
Sealing article is the important foundation element of all kinds of machinery, and nearly all industrial sector all be unable to do without it.The quality of sealing element how, is directly connected to work-ing life and the operating reliability of machine.If sealing member is with low quality, gently then bring loss and trouble, heavy then can serious accident be caused.Especially, under the environment that operating pressure is high, the load that sealing-ring bears is comparatively large, in equipment running process, often encounter sealing member damaged condition, some sealing members can only use 1-2 month, the even shorter time, just need to change, to the trouble that the continuous seepage of enterprise brings.Therefore, at present in the urgent need to a kind of sealing material that can use longer cycle under hyperbaric environment.
Summary of the invention
The invention provides a kind of high-pressure resistant sealing material; The present invention also provides its preparation method.
The invention provides a kind of high-pressure resistant sealing material, described sealing material is made up of each component of following mass fraction: hydrogenated nitrile-butadiene rubber 85-95 part, natural rubber 15-20 part, diacetyl peroxide 5-8 part, maleic acid ester tin octylate 1-2 part, stearic acid 5-8 part, vinyl carbinol 1-2 part, drying oil alkyd resin 5-8 part, Methyl Hydrogen Polysiloxane Fluid 4-6 part, ethylene glycol 2-3 part, paraffin 1-2 part, diethanolamine boric acid ester 1-2 part, calcium carbonate 0.8-1.2 part, aluminum oxide 3-6 part, white carbon black 3-5 part, anti-aging agent 0.5-2 part, sulphur 1-3 part.
Preferably, described sealing material is made up of each component of following mass fraction: hydrogenated nitrile-butadiene rubber 90 parts, natural rubber 18 parts, diacetyl peroxide 6 parts, maleic acid ester tin octylate 1.5 parts, stearic acid 6 parts, vinyl carbinol 1.5 parts, drying oil alkyd resin 6 parts, Methyl Hydrogen Polysiloxane Fluid 5 parts, ethylene glycol 2.5 parts, 1.5 parts, paraffin, diethanolamine boric acid ester 1.5 parts, 1 part, calcium carbonate, 4 parts, aluminum oxide, white carbon black 4 parts, 1.2 parts, anti-aging agent, 2 parts, sulphur.
Preferably, in described hydrogenated nitrile-butadiene rubber, acrylonitrile content is 23-26%, and mooney viscosity is 75-80, and iodine absorption value is 11-14.
The present invention also provides the preparation method of above-mentioned sealing material, step is as follows: be that mixing after the hydrogenated nitrile-butadiene rubber of formula ratio and natural rubber respectively thin-pass is added mill, again all the other each components are added in mill and carry out mixingly obtaining rubber unvulcanizate to slice after evenly, rubber unvulcanizate is carried out one step cure, control curing temperature is 160-180 DEG C, curing time is 20-30 minute, and sulfide stress is 8-11MPa; In the baking oven of 165-175 DEG C, carry out 1 hour post vulcanization again after being taken out by rubber, obtain elastomeric material.
Sealing material frictional coefficient of the present invention low (for 0.21-0.23), long service life (work-ing life is 110-130 days) under high temperature (can 210 DEG C of occasion work) high pressure (pressure of 280MPa can be born) working conditions.
Embodiment
Following embodiment is convenient to understand the present invention better, but does not limit the present invention.Experimental technique in following embodiment, if no special instructions, is ordinary method.Test materials used in following embodiment, if no special instructions, is commercially available.
embodiment 1
The formula of high-pressure resistant sealing material of the present invention is:
Hydrogenated nitrile-butadiene rubber 90kg, natural rubber 18kg, diacetyl peroxide 6kg, maleic acid ester tin octylate 1.5kg, stearic acid 6kg, vinyl carbinol 1.5kg, drying oil alkyd resin 6kg, Methyl Hydrogen Polysiloxane Fluid 5kg, ethylene glycol 2.5kg, paraffin 1.5kg, diethanolamine boric acid ester 1.5kg, calcium carbonate 1kg, aluminum oxide 4kg, white carbon black 4kg, anti-aging agent 1.2kg, sulphur 2kg.
The preparation method of high-pressure resistant sealing material of the present invention is:
Mixing after the hydrogenated nitrile-butadiene rubber of formula ratio and natural rubber respectively thin-pass is added mill, again all the other each components are added in mill and carry out mixingly obtaining rubber unvulcanizate to slice after evenly, rubber unvulcanizate is carried out one step cure, controlling curing temperature is 170 DEG C, curing time is 25 minutes, and sulfide stress is 10MPa; In the baking oven of 170 DEG C, carry out 1 hour post vulcanization again after being taken out by rubber, obtain elastomeric material.
embodiment 2
The formula of high-pressure resistant sealing material of the present invention is:
Hydrogenated nitrile-butadiene rubber 95kg, natural rubber 15kg, diacetyl peroxide 5kg, maleic acid ester tin octylate 1kg, stearic acid 8kg, vinyl carbinol 2kg, drying oil alkyd resin 5kg, Methyl Hydrogen Polysiloxane Fluid 6kg, ethylene glycol 2kg, paraffin 2kg, diethanolamine boric acid ester 1kg, calcium carbonate 1.2kg, aluminum oxide 3kg, white carbon black 5kg, anti-aging agent 0.5kg, sulphur 3kg.
The preparation method of high-pressure resistant sealing material of the present invention is:
Mixing after the hydrogenated nitrile-butadiene rubber of formula ratio and natural rubber respectively thin-pass is added mill, again all the other each components are added in mill and carry out mixingly obtaining rubber unvulcanizate to slice after evenly, rubber unvulcanizate is carried out one step cure, controlling curing temperature is 160 DEG C, curing time is 30 minutes, and sulfide stress is 11MPa; In the baking oven of 165 DEG C, carry out 1 hour post vulcanization again after being taken out by rubber, obtain elastomeric material.
embodiment 3
The formula of high-pressure resistant sealing material of the present invention is:
Hydrogenated nitrile-butadiene rubber 85kg, natural rubber 20kg, diacetyl peroxide 8kg, maleic acid ester tin octylate 2kg, stearic acid 5kg, vinyl carbinol 1kg, drying oil alkyd resin 8kg, Methyl Hydrogen Polysiloxane Fluid 4kg, ethylene glycol 3kg, paraffin 1kg, diethanolamine boric acid ester 2kg, calcium carbonate 0.8kg, aluminum oxide 6kg, white carbon black 3kg, anti-aging agent 2kg, sulphur 1kg.
The preparation method of high-pressure resistant sealing material of the present invention is:
Mixing after the hydrogenated nitrile-butadiene rubber of formula ratio and natural rubber respectively thin-pass is added mill, again all the other each components are added in mill and carry out mixingly obtaining rubber unvulcanizate to slice after evenly, rubber unvulcanizate is carried out one step cure, controlling curing temperature is 180 DEG C, curing time is 20 minutes, and sulfide stress is 8MPa; In the baking oven of 175 DEG C, carry out 1 hour post vulcanization again after being taken out by rubber, obtain elastomeric material.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a high-pressure resistant sealing material, is characterized in that: described sealing material is made up of each component of following mass fraction: hydrogenated nitrile-butadiene rubber 85-95 part, natural rubber 15-20 part, diacetyl peroxide 5-8 part, maleic acid ester tin octylate 1-2 part, stearic acid 5-8 part, vinyl carbinol 1-2 part, drying oil alkyd resin 5-8 part, Methyl Hydrogen Polysiloxane Fluid 4-6 part, ethylene glycol 2-3 part, paraffin 1-2 part, diethanolamine boric acid ester 1-2 part, calcium carbonate 0.8-1.2 part, aluminum oxide 3-6 part, white carbon black 3-5 part, anti-aging agent 0.5-2 part, sulphur 1-3 part.
2. sealing material according to claim 1, is characterized in that: described sealing material is made up of each component of following mass fraction: hydrogenated nitrile-butadiene rubber 90 parts, natural rubber 18 parts, diacetyl peroxide 6 parts, maleic acid ester tin octylate 1.5 parts, stearic acid 6 parts, vinyl carbinol 1.5 parts, drying oil alkyd resin 6 parts, Methyl Hydrogen Polysiloxane Fluid 5 parts, ethylene glycol 2.5 parts, 1.5 parts, paraffin, diethanolamine boric acid ester 1.5 parts, 1 part, calcium carbonate, 4 parts, aluminum oxide, white carbon black 4 parts, 1.2 parts, anti-aging agent, 2 parts, sulphur.
3. sealing material according to claim 1 and 2, is characterized in that: in described hydrogenated nitrile-butadiene rubber, acrylonitrile content is 23-26%, and mooney viscosity is 75-80, and iodine absorption value is 11-14.
4. the preparation method of the arbitrary described sealing material of claim 1-3, it is characterized in that: step is as follows: be that mixing after the hydrogenated nitrile-butadiene rubber of formula ratio and natural rubber respectively thin-pass is added mill, again all the other each components are added in mill and carry out mixingly obtaining rubber unvulcanizate to slice after evenly, rubber unvulcanizate is carried out one step cure, control curing temperature is 160-180 DEG C, curing time is 20-30 minute, and sulfide stress is 8-11MPa; In the baking oven of 165-175 DEG C, carry out 1 hour post vulcanization again after being taken out by rubber, obtain elastomeric material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510712069.1A CN105237845A (en) | 2015-10-28 | 2015-10-28 | High-pressure-resistant sealing material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510712069.1A CN105237845A (en) | 2015-10-28 | 2015-10-28 | High-pressure-resistant sealing material and preparation method thereof |
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| CN105237845A true CN105237845A (en) | 2016-01-13 |
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| CN201510712069.1A Pending CN105237845A (en) | 2015-10-28 | 2015-10-28 | High-pressure-resistant sealing material and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106117682A (en) * | 2016-08-04 | 2016-11-16 | 安徽嘉木橡塑工业有限公司 | A kind of rubber packing material and preparation method thereof |
| CN106675040A (en) * | 2016-12-15 | 2017-05-17 | 中山市得高行知识产权中心（有限合伙） | Sealing material for electric power outdoor communication cabinet |
| CN108219721A (en) * | 2016-12-13 | 2018-06-29 | 中山市得高行知识产权中心（有限合伙） | Sealant for equipment installation of hydraulic and hydroelectric engineering |
| CN108219482A (en) * | 2016-12-13 | 2018-06-29 | 中山市得高行知识产权中心（有限合伙） | Sealing material for electric power outdoor communication cabinet |
| CN108485007A (en) * | 2018-04-23 | 2018-09-04 | 周荣 | A kind of preparation method of anti-high-pressure type rubber packing material |
| CN113234265A (en) * | 2021-03-29 | 2021-08-10 | 靳书艳 | Preparation method of hydrogenated nitrile rubber |
-
2015
- 2015-10-28 CN CN201510712069.1A patent/CN105237845A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106117682A (en) * | 2016-08-04 | 2016-11-16 | 安徽嘉木橡塑工业有限公司 | A kind of rubber packing material and preparation method thereof |
| CN108219721A (en) * | 2016-12-13 | 2018-06-29 | 中山市得高行知识产权中心（有限合伙） | Sealant for equipment installation of hydraulic and hydroelectric engineering |
| CN108219482A (en) * | 2016-12-13 | 2018-06-29 | 中山市得高行知识产权中心（有限合伙） | Sealing material for electric power outdoor communication cabinet |
| CN106675040A (en) * | 2016-12-15 | 2017-05-17 | 中山市得高行知识产权中心（有限合伙） | Sealing material for electric power outdoor communication cabinet |
| CN108485007A (en) * | 2018-04-23 | 2018-09-04 | 周荣 | A kind of preparation method of anti-high-pressure type rubber packing material |
| CN113234265A (en) * | 2021-03-29 | 2021-08-10 | 靳书艳 | Preparation method of hydrogenated nitrile rubber |
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Application publication date: 20160113 |
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