CN114805970A - Production process of rubber sealing ring of filter - Google Patents
Production process of rubber sealing ring of filter Download PDFInfo
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- CN114805970A CN114805970A CN202111665611.4A CN202111665611A CN114805970A CN 114805970 A CN114805970 A CN 114805970A CN 202111665611 A CN202111665611 A CN 202111665611A CN 114805970 A CN114805970 A CN 114805970A
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- rubber
- auxiliary agent
- sealing ring
- filter
- butadiene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L15/00—Compositions of rubber derivatives
- C08L15/005—Hydrogenated nitrile rubber
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/04—Reduction, e.g. hydrogenation
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention relates to the field of production and cleaning of rubber sealing rings, in particular to a production process of a rubber sealing ring of a filter, which comprises three major steps of preparation of synthetic rubber, preparation of rubber particles of hydrogenated nitrile rubber and molding of the rubber sealing ring, wherein the preparation of the synthetic rubber comprises preparation of raw materials of the hydrogenated nitrile rubber, preparation of an oil phase mixture, preparation of a water phase mixture, preparation of nitrile rubber generated by polymerization reaction and preparation of hydrogenated nitrile rubber cement. The synthetic hydrogenated nitrile rubber produced by polymerizing butadiene and acrylonitrile has better temperature resistance, oil resistance and water resistance, products obtained after the synthetic rubber is prepared and the hydrogenated nitrile rubber colloidal particles can be used as intermediate raw materials, the purpose of rubber synthesis is increased, and the formula is reasonably adjusted in the process of preparing the hydrogenated nitrile rubber colloidal particles by the nitrile rubber cement, so that the water resistance and the oil resistance of the sealing rubber ring are pertinently changed, and the filter is suitable for filters at different positions in an automobile engine.
Description
Technical Field
The invention relates to the field of rubber sealing ring production, in particular to a production process of a rubber sealing ring of a filter.
Background
The filter is an accessory of an automobile engine, impurities or gas are filtered through filter paper, and a rubber sealing ring is generally required to be used at the joint of the filter to seal the filter. However, since the filter includes a gasoline filter, a diesel filter, an oil-water separator, a hydraulic filter, an air-conditioning filter, and the like, the object to which the rubber seal ring is applied includes two media of oil and water.
When the traditional rubber sealing ring for the filter is produced and processed, raw rubber of natural rubber is mostly used as a material, and the rubber sealing ring is produced through the working procedures of plastication, mixing, forming and the like.
Disclosure of Invention
The invention aims to provide a production process of a rubber sealing ring of a filter, which can be used for manufacturing a hydrogenated nitrile rubber sealing ring in a filter of an automobile engine system in a mode of synthesizing hydrogenated nitrile rubber and has better temperature resistance, oil resistance and water resistance.
In order to achieve the purpose, the application provides a production process of a rubber sealing ring of a filter, which comprises the following process steps:
s1, preparing synthetic rubber: preparing hydrogenated nitrile-butadiene rubber cement;
s1.1, preparing a hydrogenated butadiene acrylonitrile rubber raw material, wherein the hydrogenated butadiene acrylonitrile rubber comprises the following raw materials in parts by mass: 55-65 parts of butadiene, 40-50 parts of acrylonitrile, 3-5 parts of regulator, 20-25 parts of emulsifier, 3-5 parts of initiator, 1-2 parts of activator and 2-3 parts of terminator;
s1.2, preparing an oil phase mixture, wherein the oil phase mixture is prepared by adding butadiene and acrylonitrile obtained in the step S1.1 into a mixing kettle and uniformly mixing to obtain the oil phase mixture;
s1.3, preparing an aqueous phase mixture, wherein the aqueous phase mixture is uniformly mixed by adding the regulator, the emulsifier and the activator in the step S1.1 into a mixing kettle to obtain an aqueous phase mixture;
s1.4, carrying out polymerization reaction to generate butadiene-acrylonitrile rubber, introducing the oil phase mixture in S1.2 and the water phase mixture in S1.3 into a polymerization kettle, adding the initiator in S1.1 at the temperature of 5-8 ℃, carrying out butadiene-acrylonitrile reaction to generate butadiene-acrylonitrile rubber cement, and adding a terminator to stop the reaction after the reaction is finished;
s1.5, collecting the nitrile rubber cement obtained in the S1.4, adding a rhodium trichloride catalyst, introducing hydrogen into the nitrile rubber cement, and continuing for 11-12 hours at 70-80 ℃ to obtain hydrogenated nitrile rubber cement;
s2, preparing hydrogenated butadiene acrylonitrile rubber particles, namely obtaining hydrogenated butadiene acrylonitrile rubber cement after S1, adding a vulcanization auxiliary agent, an anti-aging auxiliary agent, a filling auxiliary agent, a plasticizing auxiliary agent and a coagulant into the hydrogenated butadiene acrylonitrile rubber cement to prepare hydrogenated butadiene acrylonitrile rubber particles, and cleaning and drying to obtain hydrogenated butadiene acrylonitrile rubber;
and S3, forming the rubber sealing ring, namely guiding the granular hydrogenated butadiene-acrylonitrile rubber obtained in the step S2 into a compression molding machine, and performing glue injection and heat preservation molding to obtain the rubber sealing ring.
Alternatively, both the modifier and the terminator in S1.1 can be tetraethylthiuram disulfide.
Based on the technical characteristics, the tetraethylthiuram disulfide can simultaneously have two functions of adjusting molecular weight and inhibiting polymerization, and can be added only in the step S1.4 when in use, the molecular weight of the nitrile rubber is adjusted and the reaction is stopped at the end stage of the chemical reaction.
Optionally, the initiator in S1.1 is peroxyisopropylcyclohexylbenzene.
Based on the technical characteristics, after the initiator of the peroxy isopropyl cyclohexyl benzene is added to start the reaction, the conversion rate of the butadiene and the acrylonitrile can reach 70-75% after 12-13 h.
Optionally, the activator in S1.1 adopts 0.2 mass percent of 2-aryl indandione.
Based on the technical characteristics, after 0.2 percent of 2-aryl indandione activating agent is added, the conversion rate of butadiene and acrylonitrile can be improved to 80-85 percent, and the toxicity of the 2-aryl indandione is low.
Optionally, the rotation speed of the stirring blade in the mixing kettle in S1.2 is 800-1000r/min, the stirring time is 8-10min, and the temperature is 20-30 ℃.
Optionally, the rotation speed of the stirring blade in the mixing kettle in S1.3 is 600-7000r/min, the stirring time is 5-6min, and the temperature is 20-30 ℃.
Optionally, in S2, the mass ratio of the hydrogenated nitrile rubber cement, the vulcanization assistant, the anti-aging assistant, the filling assistant, the plasticizing assistant and the coagulant is 100: 2:1:10:2:3, adopting a lead oxide vulcanization system as a vulcanization auxiliary agent, adopting barium sulfate as a filling auxiliary agent, and reacting for 1-1.5 h.
Based on the technical characteristics, the lead oxide vulcanization system is adopted as the vulcanization auxiliary agent, and barium sulfate is adopted as the filling auxiliary agent, so that the water resistance of the sealing rubber ring can be improved.
Optionally, in S2, the mass ratio of the hydrogenated nitrile rubber cement, the vulcanization assistant, the anti-aging assistant, the filling assistant, the plasticizing assistant and the coagulant is 100: 2:1:10:1:3, and the reaction time is 2.5-3 h.
Based on the technical characteristics, the using amount of the plasticizing auxiliary agent is reduced, the vulcanization crosslinking time is prolonged, and the oil resistance of the sealing rubber ring can be improved.
Optionally, in the step S3, the temperature of the glue injection section in the compression molding machine is 150-.
Compared with the prior art, the production process of the rubber sealing ring of the filter provided by the invention has the following beneficial effects:
1. the synthesized hydrogenated nitrile rubber is produced by polymerizing butadiene and acrylonitrile, has better temperature resistance, oil resistance and water resistance, and products obtained by preparing the synthetic rubber and preparing the hydrogenated nitrile rubber particles can be used as intermediate raw materials to increase the rubber synthesis application;
2. in the process of preparing the hydrogenated nitrile rubber colloidal particles from the nitrile rubber cement, the formula is reasonably adjusted, and the water resistance and the oil resistance of the sealing rubber ring are pertinently changed, so that the filter is suitable for filters at different positions in an automobile engine.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The first embodiment is as follows:
a production process of a rubber sealing ring of a filter comprises the following process steps:
s1, preparing synthetic rubber: preparing hydrogenated nitrile-butadiene rubber cement;
s1.1, preparing a hydrogenated butadiene acrylonitrile rubber raw material, wherein the hydrogenated butadiene acrylonitrile rubber comprises the following raw materials in parts by mass: 55-65 parts of butadiene, 40-50 parts of acrylonitrile, 3-5 parts of regulator, 20-25 parts of emulsifier, 3-5 parts of initiator, 1-2 parts of activator and 2-3 parts of terminator;
s1.2, preparing an oil phase mixture, wherein the oil phase mixture is obtained by uniformly mixing butadiene and acrylonitrile in the step S1.1 in a mixing kettle, the rotating speed of a stirring blade in the mixing kettle is 800-1000r/min, the stirring time is 8-10min, and the temperature is 20-30 ℃;
s1.3, preparing a water phase mixture, wherein the water phase mixture is uniformly mixed by adding the regulator, the emulsifier and the activator in the step S1.1 into a mixing kettle to obtain the water phase mixture, the rotating speed of a stirring blade in the mixing kettle is 600-7000r/min, the stirring time is 5-6min, and the temperature is 20-30 ℃;
s1.4, carrying out polymerization reaction to generate butadiene-acrylonitrile rubber, introducing the oil phase mixture in S1.2 and the water phase mixture in S1.3 into a polymerization kettle, adding the initiator in S1.1 at the temperature of 5-8 ℃, carrying out butadiene-acrylonitrile reaction to generate butadiene-acrylonitrile rubber cement, and adding a terminator to stop the reaction after the reaction is finished;
s1.5, collecting the nitrile rubber cement obtained in the S1.4, adding a rhodium trichloride catalyst, introducing hydrogen into the nitrile rubber cement, and continuing for 11-12 hours at 70-80 ℃ to obtain hydrogenated nitrile rubber cement;
s2, preparing hydrogenated butadiene acrylonitrile rubber particles, namely obtaining hydrogenated butadiene acrylonitrile rubber cement after S1, adding a vulcanization auxiliary agent, an anti-aging auxiliary agent, a filling auxiliary agent, a plasticizing auxiliary agent and a coagulant into the hydrogenated butadiene acrylonitrile rubber cement to prepare hydrogenated butadiene acrylonitrile rubber particles, and cleaning and drying to obtain hydrogenated butadiene acrylonitrile rubber;
and S3, forming the rubber sealing ring, namely guiding the granular hydrogenated butadiene-acrylonitrile rubber obtained in the step S2 into a compression molding machine, and performing glue injection and heat preservation molding to obtain the rubber sealing ring. In the step, the temperature of the rubber injection section of the granular hydrogenated nitrile-butadiene rubber in a compression molding machine is 150-160 ℃, the rubber injection time is 5-10s, the temperature of the heat preservation molding section in the compression molding machine is 110-120 ℃, and the heat preservation molding time is 20-25 s.
The initiator in S1.1 is isopropyl cyclohexyl benzene, and after the initiator added with the isopropyl cyclohexyl benzene starts to react, the conversion rate of butadiene and acrylonitrile can reach 70-75% after 12-13 h.
The S1.1 activator adopts 0.2 percent of 2-aryl indandione by mass fraction, and the 2-aryl indandione activator is added by 0.2 percent, so that the conversion rate of butadiene and acrylonitrile can be improved to 80-85 percent, and the 2-aryl indandione has low toxicity.
Example two:
different from the first embodiment, the regulator and the terminator in S1.1 are both tetraethylthiuram disulfide, which can simultaneously have two functions of regulating molecular weight and inhibiting polymerization, and when in use, the regulator and the terminator are added only in the step S1.4, namely the end stage of the chemical reaction, but not in the step S1.3, the molecular weight of the nitrile rubber is regulated and the reaction is terminated.
Example three:
in S2, the mass ratio of the hydrogenated nitrile rubber cement, the vulcanization auxiliary agent, the anti-aging auxiliary agent, the filling auxiliary agent, the plasticizing auxiliary agent and the coagulant is 100: 2:1:10:2:3, adopting a lead oxide vulcanization system as a vulcanization auxiliary agent, adopting barium sulfate as a filling auxiliary agent, and reacting for 1-1.5 h. The lead oxide vulcanization system is adopted as the vulcanization auxiliary agent, and barium sulfate is adopted as the filling auxiliary agent, so that the water resistance of the sealing rubber ring can be improved.
Example four:
different from the third embodiment, the mass ratio of the hydrogenated nitrile rubber cement, the vulcanization assistant, the anti-aging assistant, the filling assistant, the plasticizing assistant and the coagulant in S2 is 100: 2:1:10:1:3, and the reaction time is 2.5-3 h. The consumption of the plasticizing auxiliary agent is reduced, the vulcanization crosslinking time is prolonged, and the oil resistance of the sealing rubber ring can be improved.
It should also be noted that, in the present specification, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (9)
1. A production process of a rubber sealing ring of a filter is characterized by comprising the following steps: the method comprises the following process steps:
s1, preparing synthetic rubber: preparing hydrogenated nitrile-butadiene rubber cement;
s1.1, preparing a hydrogenated butadiene acrylonitrile rubber raw material, wherein the hydrogenated butadiene acrylonitrile rubber comprises the following raw materials in parts by mass: 55-65 parts of butadiene, 40-50 parts of acrylonitrile, 3-5 parts of regulator, 20-25 parts of emulsifier, 3-5 parts of initiator, 1-2 parts of activator and 2-3 parts of terminator;
s1.2, preparing an oil phase mixture, wherein the oil phase mixture is prepared by adding butadiene and acrylonitrile obtained in the step S1.1 into a mixing kettle and uniformly mixing to obtain the oil phase mixture;
s1.3, preparing an aqueous phase mixture, wherein the aqueous phase mixture is uniformly mixed by adding the regulator, the emulsifier and the activator in the step S1.1 into a mixing kettle to obtain an aqueous phase mixture;
s1.4, carrying out polymerization reaction to generate butadiene-acrylonitrile rubber, introducing the oil phase mixture in S1.2 and the water phase mixture in S1.3 into a polymerization kettle, adding the initiator in S1.1 at the temperature of 5-8 ℃, carrying out butadiene-acrylonitrile reaction to generate butadiene-acrylonitrile rubber cement, and adding a terminator to stop the reaction after the reaction is finished;
s1.5, collecting the nitrile rubber cement obtained in the S1.4, adding a rhodium trichloride catalyst, introducing hydrogen into the nitrile rubber cement, and continuing for 11-12 hours at 70-80 ℃ to obtain hydrogenated nitrile rubber cement;
s2, preparing hydrogenated butadiene acrylonitrile rubber particles, namely obtaining hydrogenated butadiene acrylonitrile rubber cement after S1, adding a vulcanization auxiliary agent, an anti-aging auxiliary agent, a filling auxiliary agent, a plasticizing auxiliary agent and a coagulant into the hydrogenated butadiene acrylonitrile rubber cement to prepare hydrogenated butadiene acrylonitrile rubber particles, and cleaning and drying to obtain hydrogenated butadiene acrylonitrile rubber;
and S3, forming the rubber sealing ring, namely guiding the granular hydrogenated butadiene-acrylonitrile rubber obtained in the step S2 into a compression molding machine, and performing glue injection and heat preservation molding to obtain the rubber sealing ring.
2. The production process of the rubber sealing ring for the filter as claimed in claim 1, wherein: both the modifier and the terminator in S1.1 can be tetraethylthiuram disulfide.
3. The production process of the rubber sealing ring for the filter as claimed in claim 1, wherein: the initiator in S1.1 is peroxyisopropylcyclohexylbenzene.
4. The production process of the rubber sealing ring for the filter as claimed in claim 1, wherein: the activator in S1.1 adopts 0.2 percent of 2-aryl indandione by mass fraction.
5. The production process of the rubber sealing ring for the filter as claimed in claim 1, wherein: in S1.2, the rotating speed of the stirring blades in the mixing kettle is 800-.
6. The production process of the rubber sealing ring for the filter as claimed in claim 1, wherein: in S1.3, the rotating speed of the stirring blades in the mixing kettle is 600-7000r/min, the stirring time is 5-6min, and the temperature is 20-30 ℃.
7. The production process of the rubber sealing ring for the filter as claimed in claim 1, wherein: in S2, the mass ratio of the hydrogenated nitrile rubber cement to the vulcanization auxiliary agent to the anti-aging auxiliary agent to the filling auxiliary agent to the plasticizing auxiliary agent to the coagulant is 100: 2:1:10:2:3, adopting a lead oxide vulcanization system as a vulcanization auxiliary agent, adopting barium sulfate as a filling auxiliary agent, and reacting for 1-1.5 h.
8. The production process of the rubber sealing ring for the filter according to claim 1, characterized in that: in S2, the mass ratio of the hydrogenated nitrile rubber cement to the vulcanization auxiliary agent to the anti-aging auxiliary agent to the filling auxiliary agent to the plasticizing auxiliary agent to the coagulant is 100: 2:1:10:1:3, and the reaction time is 2.5-3 h.
9. The production process of the rubber sealing ring for the filter as claimed in claim 1, wherein: and S3, the temperature of the glue injection section in the compression molding machine is 150-160 ℃, the glue injection time is 5-10S, the temperature of the heat preservation molding section in the compression molding machine is 110-120 ℃, and the heat preservation molding time is 20-25S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111665611.4A CN114805970A (en) | 2021-12-31 | 2021-12-31 | Production process of rubber sealing ring of filter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111665611.4A CN114805970A (en) | 2021-12-31 | 2021-12-31 | Production process of rubber sealing ring of filter |
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| CN114805970A true CN114805970A (en) | 2022-07-29 |
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| CN202111665611.4A Pending CN114805970A (en) | 2021-12-31 | 2021-12-31 | Production process of rubber sealing ring of filter |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101649180A (en) * | 2009-08-03 | 2010-02-17 | 上海华化塑胶有限公司 | Oil resistance foamable end cap sealing material and preparation method thereof |
| CN204058320U (en) * | 2014-07-14 | 2014-12-31 | 盛东科技有限公司 | The efficient preparation facilities of a kind of Powdered acrylonitrile-butadiene rubber |
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2021
- 2021-12-31 CN CN202111665611.4A patent/CN114805970A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101649180A (en) * | 2009-08-03 | 2010-02-17 | 上海华化塑胶有限公司 | Oil resistance foamable end cap sealing material and preparation method thereof |
| CN204058320U (en) * | 2014-07-14 | 2014-12-31 | 盛东科技有限公司 | The efficient preparation facilities of a kind of Powdered acrylonitrile-butadiene rubber |
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