CN118650766A - Preparation method of modified rubber compound and sealing connecting piece prepared by same - Google Patents
Preparation method of modified rubber compound and sealing connecting piece prepared by same Download PDFInfo
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- CN118650766A CN118650766A CN202411149334.5A CN202411149334A CN118650766A CN 118650766 A CN118650766 A CN 118650766A CN 202411149334 A CN202411149334 A CN 202411149334A CN 118650766 A CN118650766 A CN 118650766A
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 82
- 239000005060 rubber Substances 0.000 title claims abstract description 76
- 238000007789 sealing Methods 0.000 title claims abstract description 55
- 150000001875 compounds Chemical class 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 45
- 238000004073 vulcanization Methods 0.000 claims abstract description 23
- 239000006229 carbon black Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 30
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 13
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 11
- 235000021355 Stearic acid Nutrition 0.000 claims description 10
- 229920001973 fluoroelastomer Polymers 0.000 claims description 10
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 10
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 10
- 239000004014 plasticizer Substances 0.000 claims description 10
- 239000008117 stearic acid Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- HGTUJZTUQFXBIH-UHFFFAOYSA-N (2,3-dimethyl-3-phenylbutan-2-yl)benzene Chemical group C=1C=CC=CC=1C(C)(C)C(C)(C)C1=CC=CC=C1 HGTUJZTUQFXBIH-UHFFFAOYSA-N 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 3
- 238000005469 granulation Methods 0.000 claims description 3
- 230000003179 granulation Effects 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052731 fluorine Inorganic materials 0.000 abstract description 9
- 239000011737 fluorine Substances 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 6
- 239000000806 elastomer Substances 0.000 abstract description 6
- 239000012752 auxiliary agent Substances 0.000 abstract description 5
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 9
- 238000005299 abrasion Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052961 molybdenite Inorganic materials 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 238000010057 rubber processing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a preparation method of modified rubber compound and a prepared sealing connecting piece thereof, belonging to the technical field of sealing connecting pieces, wherein the modified rubber compound prepared by adding MoS 2, a vulcanization aid and carbon black in proper proportion into a fluorine elastomer as a base material through a process improves the performance of the prepared modified rubber compound, so that the prepared modified rubber compound has better wear performance and lubricating performance, and the low friction coefficient and low wear performance of the prepared modified rubber compound are ensured after the prepared modified rubber compound is processed into the sealing connecting piece; the content proportion of the auxiliary agent in the mixing process or the component of the raw rubber is conveniently adjusted through the two-stage mixing step, so that products with various specifications and performances are prepared; the invention also provides a detection device for simulating the friction resistance of the sealing connecting piece during operation, and by configuring the bearing seat with the quick-release structure, the friction resistance coefficient of the sealing connecting piece can be tested and obtained by correspondingly changing the parameters of the sealing connecting piece in different sizes, so that the performance of the sealing connecting piece can be obtained for adjusting the formula and the process.
Description
Technical Field
The invention discloses a sealing connecting piece technology, in particular to a preparation method of modified rubber compound and a sealing connecting piece prepared by the same.
Background
The rubber sealing connecting piece is widely applied to industries such as hydraulic, mechanical and pneumatic, and the factors such as high temperature, high pressure, humidity, ozone, liquid corrosion, laser and the like gradually exist in the environment in which the rubber sealing connecting piece is applied, and the phenomena such as loosening, ageing, fragility, fatigue and the like of the rubber sealing connecting piece are caused by different degrees of the environment, so that the mechanical property of the rubber sealing connecting piece cannot meet the requirements of actual production, and once the effect of the sealing connecting piece fails, the normal operation of equipment can be caused;
The conventional application is in sealing device such as hydraulic piston cylinder and bearing rotor, if adopt too high coefficient of friction can increase the frictional resistance between sealing connection spare and the driving piece, makes sealing connection spare more easily impaired and reduce life when the during operation, and then leads to sealing effect to drop, needs low coefficient of friction's sealing connection spare to ensure sealing connection spare life and sealing effect for this reason.
Disclosure of Invention
The invention aims to solve the problems and provide a preparation method of a modified rubber compound.
In order to achieve the above purpose, the present invention provides the following technical solutions: a preparation method of modified rubber compound comprises the following steps,
S1, drying raw rubber, namely drying 100 parts by weight of raw rubber in an oven for 16 hours in hot air at 100 ℃;
S2, plasticating, namely adding 100 parts by mass of dried raw rubber into an internal mixer for plasticating, adding 60-90 parts by mass of carbon black and 0.2 part by mass of stearic acid, uniformly mixing, and keeping the temperature at 80 ℃ for 10min, and adding 2 parts by mass of plasticizer TP-95;
s3, vulcanizing, namely adding 1-3 parts by weight of vulcanizing agent dicumyl peroxide and 5-13 parts by weight of vulcanizing agent into the mixture at the temperature of between 150 and 170 DEG C Uniformly mixing for 5-30min;
s4, discharging, and extruding the mixed sizing material out of the granules by a mixer to obtain modified rubber compound;
in the steps S2-S4, two-stage mixing is adopted, and the mixing steps are as follows:
m1, mixing raw rubber, carbon black and stearic acid into an internal mixer for uniform mixing in the first stage, and then adding a plasticizer TP-95 to prepare a flaky master batch; dicumyl peroxide as vulcanizing agent Pouring into a mixing barrel for pre-dispersing, and then falling into a mixing mill through a discharging device to be mixed with the flaky masterbatch;
M2, second stage vulcanizing agent dicumyl peroxide and Mixing and extruding the mixture with the flaky master batch at the feeding position at the front end of the mixing mill by a single screw, and pushing the mixture to a rear end double gear pump for extrusion and granulation.
Through adopting the technical scheme, the masterbatch prepared from the auxiliary agent and the raw rubber is prepared in advance separately in a two-stage mixing mode, the raw rubber component proportion and the auxiliary agent component proportion are convenient to adjust subsequently, and the masterbatch prepared into a sheet shape in the mode is added to better mix with the vulcanizing agent dicumyl peroxide and the vulcanizing agent added in the second stageThe mixing effect is improved by fully mixing.
Preferably, in step S1, the raw rubber is made of a fluoroelastomer.
By adopting the technical scheme, the sealing connector is used as a base material of the sealing connector by virtue of excellent flame retardance, air tightness, high temperature resistance, oil resistance, solvent resistance, flame resistance, chemical resistance and weather resistance.
Preferably, in step S3, the vulcanization temperature is 165 ℃.
By adopting the technical scheme, the vulcanization temperature can influence the vulcanization time and the vulcanization efficiency of the rubber compound in the vulcanization process, and influence the performance of the subsequent modified rubber compound.
The modified rubber compound sealing connecting piece is prepared by processing the prepared modified rubber compound, and comprises the following components in parts by weight: 100 parts of raw rubber, 60-90 parts of carbon black, 2 parts of plasticizer TP-95, 1-3 parts of vulcanizing agent dicumyl peroxide and 5-13 parts of vulcanizing agent dicumyl peroxideAnd 0.2 part of stearic acid.
By adopting the technical scheme, the fluoroelastomer with improved performance is processed into the sealing connecting piece to improve the comprehensive performance of the application in the sealing field.
Preferably, 70 parts of the carbon black is used.
By adopting the technical scheme, the carbon black can be added into the mixing as a reinforcing agent and a filler, but the properties of the final finished product can be influenced due to unsuitable proportion, so that the carbon black needs to be prepared by selecting a proper proportion.
Preferably, 2.5 parts of the vulcanizing agent dicumyl peroxide is used.
By adopting the technical scheme, the dosage of the vulcanizing agent can influence the time efficiency and the vulcanization degree of the whole vulcanization system.
Preferably, the method comprises7.5 Parts are employed.
By adopting the technical proposal, the utility model has the advantages that,As a main component of molybdenite, the modified rubber compound has the characteristic of good lubricity and can be used for improving the lubricating property and the abrasion property of the modified rubber compound.
Compared with the prior art, the invention has the beneficial effects that:
Adding a proper proportion of fluoroelastomer as a base material The vulcanization aid and the carbon black improve the performance of the prepared modified rubber compound through the process, so that the prepared modified rubber compound has better wear performance and lubricating performance, and the low friction coefficient and the low wear performance of the prepared modified rubber compound after the prepared modified rubber compound is processed into a sealing connecting piece are ensured; the content proportion of the auxiliary agent in the mixing process or the component of the raw rubber is conveniently adjusted through the two-stage mixing step, so that products with various specifications and performances are prepared; the invention also provides a detection device for simulating the friction resistance of the sealing connecting piece during operation, and by configuring the bearing seat with the quick-release structure, the friction resistance coefficient of the sealing connecting piece can be tested and obtained by correspondingly changing the parameters of the sealing connecting piece in different sizes, so that the performance of the sealing connecting piece can be obtained for adjusting the formula and the process.
Drawings
FIG. 1 is a schematic view of the exterior of a sealing connection;
FIG. 2 is a schematic diagram of a two-stage compounding process apparatus;
FIG. 3 is a schematic flow diagram of a two-stage mixing process;
FIG. 4 is a partial view and a sectional view of a single screw in a mixer;
FIG. 5 is a graph showing the effect of curing temperature on the properties of the modified mix;
FIG. 6 is a graph showing the effect of the amount of dicumyl peroxide added on the properties of the modified mix;
FIG. 7 is a graph showing the effect of carbon black addition on the properties of the modified mix;
FIG. 8 is a graph showing the effect of MoS 2 addition on the properties of the modified mix;
FIG. 9 is a statistical chart of the dynamic friction force test results for sealing connectors made with and without MoS 2 at different pressures;
FIG. 10 is a partial schematic view of a friction drag employing device for simulating the frictional drag experienced by a sealing connection during operation;
fig. 11 is a schematic view of a quick-release structure of a bearing seat.
Detailed Description
In the following description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
A preparation method of modified rubber compound comprises the following steps,
S1, drying raw rubber, namely drying 100 parts by weight of raw rubber in an oven for 16 hours in hot air at 100 ℃;
In the step S1, the raw rubber adopts a fluorine elastomer, the fluorine elastomer is widely applied in the sealing field, vitonF-605C type is adopted, the processing property of the fluorine elastomer is poor, the fluorine elastomer is easy to abrade when being used as a sealing connecting piece, the performance is unstable, and the stability performance of the fluorine elastomer is improved by means of technological improvement;
S2, plasticating, namely adding 100 parts by mass of dried raw rubber into an internal mixer for plasticating, adding 60-90 parts by mass of carbon black and 0.2 part by mass of stearic acid, uniformly mixing, and keeping the temperature at 80 ℃ for 10min, and adding 2 parts by mass of plasticizer TP-95;
s3, vulcanizing, namely adding 1-3 parts by weight of vulcanizing agent dicumyl peroxide and 5-13 parts by weight of vulcanizing agent into the mixture at the temperature of between 150 and 170 DEG C Uniformly mixing for 5-30min;
s4, discharging, and extruding the mixed sizing material out of the granules by a mixer to obtain modified rubber compound;
in the steps S2-S4, two-stage mixing is adopted, and the mixing steps are as follows:
m1, mixing raw rubber, carbon black and stearic acid into an internal mixer for uniform mixing in the first stage, and then adding a plasticizer TP-95 to prepare a flaky master batch; dicumyl peroxide as vulcanizing agent Pouring into a mixing barrel for pre-dispersing, and then falling into a mixing mill through a discharging device to be mixed with the flaky masterbatch;
M2, second stage vulcanizing agent dicumyl peroxide and Mixing, extruding and pushing the mixture and the flaky master batch at the feeding position at the front end of a mixing machine to a rear end double gear pump for extrusion and granulation;
the two-stage mixing equipment and the flow are simplified as shown in fig. 2 and 3, and the partial view and the sectional view of a single screw in a mixer are shown in fig. 4, and the vulcanizing agents, namely dicumyl peroxide and Pouring into an upper mixing drum for pre-dispersing, extruding by a single screw of a discharging device, and then falling into the front feeding position of a mixer below, wherein the pre-prepared fluoroelastomer is sent into the front feeding position of the mixer through a conveyor belt and then is mixed with vulcanizing agent dicumyl peroxide and vulcanizing agent dicumyl peroxideMixing in a lower mixing mill, extruding and granulating by a gear pump type screw rod at the rear section;
continuous mixing can be realized by adopting two-section mixing, and the component proportion and the addition amount of raw rubber and auxiliary agent can be adjusted more conveniently;
In step S3, the vulcanization temperature is 165 ℃;
for example, 100 parts of raw rubber, 80 parts of carbon black, 0.2 part of stearic acid, 2 parts of plasticizer TP-95 and 2 parts of vulcanizing agent dicumyl peroxide are taken as experimental formulas, a 200r/min load 80N ball mill is adopted to grind the modified rubber compound prepared by the experimental formulas, a rubber processing analyzer, a rebound tester, a durometer and material analysis tester are used for obtaining vulcanization parameters and physical properties of the rubber compound, as shown in figure 5, the vulcanization temperature is limited by every 5 ℃ at 150-170 ℃, and the curing time is prolonged when the vulcanization temperature is too low, so that the curing of the rubber compound is insufficient; however, too high a vulcanization temperature can cause excessive crosslinking of the rubber material, and higher vulcanization efficiency, hardness and tensile strength can be comprehensively ensured at 165 ℃ selected;
The modified rubber compound sealing connecting piece is prepared by processing the prepared modified rubber compound, and comprises the following components in parts by weight: 100 parts of raw rubber, 60-90 parts of carbon black, 2 parts of plasticizer TP-95, 1-3 parts of vulcanizing agent dicumyl peroxide and 5-13 parts of vulcanizing agent dicumyl peroxide And 0.2 part of stearic acid;
As shown in FIG. 1, the modified rubber compound was used and no additives were added The prepared modified rubber compound is respectively processed into a sealing connecting piece product for fixing a bearing gasket or a ferrule gasket to prevent the bearing gasket or the ferrule gasket from loosening, the modified rubber compound sealing connecting piece is provided with a detection device for simulating friction resistance received during operation, the detection device comprises an outer shell, a rotatable transmission rotating part and a bearing seat assembled and matched with the rotating part, the bearing seat can be matched with the modified rubber compound sealing connecting piece through a bearing and a bearing sleeve, the bearing seat is of a quick-dismantling structure, the whole assembly part of the bearing seat can be provided with a plurality of groups of models with different sizes, fluid media during operation of the detection device enter the sealing space of the bearing seat and the outer shell from the axial direction of the rotating part, the detection device can be used for quickly disassembling and assembling the bearing seat through pneumatic clamping devices at two sides, and the side wall of the bearing seat is provided with a dynamometer capable of detecting pressure generated by the modified rubber compound sealing connecting piece on the side wall; the modified rubber compound is adopted and is not addedThe prepared sealing connector product is respectively installed on a rotating component driven by a motor to carry out working condition experiments, friction resistance is applied during simulated operation, the sealing connector product is structurally characterized in that a matching groove used for matching with a bearing and a bearing sleeve is formed between an inner diameter and an outer diameter, as shown in figures 10 and 11, the sealing connector product is installed on the bearing sleeve of a bearing seat of the rotating component, a dynamometer is arranged on the bearing seat to detect, the friction resistance applied to pressure increase is simulated by configuring bearing sleeves with different matching sizes, a fluid medium passes through a simulated sealing environment from the middle of the rotating component, a liquid pumping device is arranged on the other side of the detecting device, far away from the bearing seat, and when the bearing sleeves with different matching sizes are detached, the liquid pumping device can pump and store the fluid medium through a suction pump, and then the fluid medium is discharged through the suction pump after replacement installation is completed.
As shown in fig. 9, the friction resistance of the two components increases with the pressure as the matching size becomes smaller, and the friction resistance gradually increases, but the sealing connector product prepared by the modified rubber compound has lower friction coefficient.
The carbon black is 70 parts, as shown in fig. 7, the influence of the addition amount of the carbon black on the performance of the modified rubber compound is shown, as the use amount of the carbon black increases, water in the carbon black reacts with residual iso-oxyacid ester groups in raw rubber to improve the crosslinking degree, the vulcanization time of a sealing connecting piece of the modified rubber compound is reduced to improve the vulcanization rate, the hardness, rebound resilience and elongation at break of a product are increased, the tensile strength and the tearing strength are gradually reduced, and the tensile strength reaches the highest when 70 parts are adopted;
The use of 2.5 parts of the vulcanizing agent dicumyl peroxide is shown in fig. 6, the effect of the addition amount of the vulcanizing agent dicumyl peroxide on the performance of the modified rubber compound is shown, as the use amount of dicumyl peroxide is increased, free radicals generated by decomposition of dicumyl peroxide in the vulcanization reaction are increased, the crosslinking reaction degree is improved, the vulcanization time is reduced, the vulcanization rate is improved, the tensile strength of the sealing connecting piece of the modified rubber compound is increased along with the increase, the elongation at break is gradually reduced, the tearing strength is increased and then reduced, the hardness is increased, the rebound resilience is slowly reduced, and the comprehensive performance of the tensile strength and the tearing strength is best when 2.5 parts of the vulcanizing agent dicumyl peroxide is selected.
7.5 Parts of a catalyst were used, in whichThe specification of 8000 meshes is adopted,Can react with fluorine in the fluoroelastomer, but too large an amount of the fluorine can abrade the mechanical stability of the fluoroelastomer itself, as shown in FIG. 8Effect of the amount added on the properties of the fluoroelastomer, asThe addition amount is increased, the vulcanization time tends to be increased, and the vulcanization rate is reduced, becauseIs a laminar material, reacts with fluorine in a reaction system and prevents the combination of the fluoroelastomer and other additives to reduce the rubber content in the modified rubber compound, so that the hardness of the material is improved, and according to the friction force of a dynamometer on a rotating part and the abrasion degree after the experiment is finished in the working condition experiment, the friction force of the dynamometer on the rotating part is improvedThe addition amount is increased, the acle abrasion is increased and then reduced, the acle abrasion is lowest when 5 parts are adopted, and the friction and abrasion performance is balanced when 7.5 parts are selected comprehensively for influencing the performance of the fluoroelastomer and the performance of the modified rubber compound sealing connecting piece.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. A preparation method of modified rubber compound is characterized by comprising the following steps,
S1, drying raw rubber, namely drying 100 parts by weight of raw rubber in an oven for 16 hours in hot air at 100 ℃;
S2, plasticating, namely adding 100 parts by mass of dried raw rubber into an internal mixer for plasticating, adding 60-90 parts by mass of carbon black and 0.2 part by mass of stearic acid, uniformly mixing, and keeping the temperature at 80 ℃ for 10min, and adding 2 parts by mass of plasticizer TP-95;
S3, vulcanizing, namely adding 1-3 parts by weight of vulcanizing agent dicumyl peroxide and 5-13 parts by weight of vulcanizing agent into the mixture at the temperature of between 150 and 170 DEG C Uniformly mixing for 5-30min;
S4, discharging, and extruding the mixed sizing material out of the granules by a mixer to obtain modified rubber compound;
in the steps S2-S4, two-stage mixing is adopted, and the mixing steps are as follows:
M1, mixing raw rubber, carbon black and stearic acid into an internal mixer for uniform mixing in the first stage, and then adding a plasticizer TP-95 to prepare a flaky master batch; dicumyl peroxide as vulcanizing agent Pouring into a mixing barrel for pre-dispersing, and then falling into a mixing mill through a discharging device to be mixed with the flaky masterbatch;
m2, second stage vulcanizing agent dicumyl peroxide and Mixing and extruding the mixture with the flaky master batch at the feeding position at the front end of the mixing mill by a single screw, and pushing the mixture to a rear end double gear pump for extrusion and granulation.
2. A method of preparing a modified elastomeric compound according to claim 1, wherein in step S1, the raw rubber is made of a fluoroelastomer.
3. The method of claim 1, wherein in step S3, the vulcanization temperature is 165 ℃.
4. A modified rubber compound sealing connector prepared by the method of any one of claims 1-3, which is characterized by comprising the following components in parts by weight: 100 parts of raw rubber, 60-90 parts of carbon black, 2 parts of plasticizer TP-95, 1-3 parts of vulcanizing agent dicumyl peroxide and 5-13 parts of vulcanizing agent dicumyl peroxideAnd 0.2 part of stearic acid.
5. A modified elastomeric sealing joint as in claim 4 wherein said carbon black is present in an amount of about 70 parts.
6. A modified elastomeric sealing joint as in claim 4 wherein said vulcanizing agent is cumyl peroxide in an amount of 2.5 parts.
7. A modified elastomeric seal joint according to claim 4, wherein said elastomeric seal joint comprises7.5 Parts are employed.
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| CN202411149334.5A CN118650766A (en) | 2024-08-21 | 2024-08-21 | Preparation method of modified rubber compound and sealing connecting piece prepared by same |
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| JP2001031795A (en) * | 1999-07-21 | 2001-02-06 | Nsk Ltd | Rubber material composition |
| US20060142467A1 (en) * | 2004-12-27 | 2006-06-29 | Freudenberg-Nok General Partnership | Fluorocarbon elastomer compositions containing wear reducing additives |
| JP2008285562A (en) * | 2007-05-16 | 2008-11-27 | Mitsubishi Cable Ind Ltd | Self-lubricating rubber composition and sealing material using the same |
| CN102604178A (en) * | 2011-11-29 | 2012-07-25 | 上海大学 | Wear-resistant modified HNBR (hydrogenated nitrile butadiene rubber), NBR (nitrile butadiene rubber) and NBR/PVC (polyvinyl chloride) dynamic sealing material adopting molybdenum disulfide solid lubricant and preparation method for same |
| CN105623004A (en) * | 2014-10-29 | 2016-06-01 | 宁波泰科威橡胶科技有限公司 | Modified nitrile-butadiene rubber and preparation method thereof |
| CN114716740A (en) * | 2022-04-29 | 2022-07-08 | 常熟市海虞橡胶有限公司 | Rubber compound for microwave-vulcanized oil-resistant sealing ring and preparation method thereof |
-
2024
- 2024-08-21 CN CN202411149334.5A patent/CN118650766A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001031795A (en) * | 1999-07-21 | 2001-02-06 | Nsk Ltd | Rubber material composition |
| US20060142467A1 (en) * | 2004-12-27 | 2006-06-29 | Freudenberg-Nok General Partnership | Fluorocarbon elastomer compositions containing wear reducing additives |
| JP2008285562A (en) * | 2007-05-16 | 2008-11-27 | Mitsubishi Cable Ind Ltd | Self-lubricating rubber composition and sealing material using the same |
| CN102604178A (en) * | 2011-11-29 | 2012-07-25 | 上海大学 | Wear-resistant modified HNBR (hydrogenated nitrile butadiene rubber), NBR (nitrile butadiene rubber) and NBR/PVC (polyvinyl chloride) dynamic sealing material adopting molybdenum disulfide solid lubricant and preparation method for same |
| CN105623004A (en) * | 2014-10-29 | 2016-06-01 | 宁波泰科威橡胶科技有限公司 | Modified nitrile-butadiene rubber and preparation method thereof |
| CN114716740A (en) * | 2022-04-29 | 2022-07-08 | 常熟市海虞橡胶有限公司 | Rubber compound for microwave-vulcanized oil-resistant sealing ring and preparation method thereof |
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