CN111171480B - Lip-shaped sealing ring for automobile engine rotating shaft - Google Patents
Lip-shaped sealing ring for automobile engine rotating shaft Download PDFInfo
- Publication number
- CN111171480B CN111171480B CN201811335469.5A CN201811335469A CN111171480B CN 111171480 B CN111171480 B CN 111171480B CN 201811335469 A CN201811335469 A CN 201811335469A CN 111171480 B CN111171480 B CN 111171480B
- Authority
- CN
- China
- Prior art keywords
- parts
- sealing ring
- lip
- automobile engine
- rotating shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/16—Homopolymers or copolymers or vinylidene fluoride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a lip-shaped sealing ring for an automobile engine rotating shaft, which is prepared from a fluororubber system, a melamine formaldehyde resin system and a graphene oxide system through the processes of open milling, extrusion, die pressing vulcanization forming, product post-treatment and the like. The lip-shaped sealing ring for the automobile engine rotating shaft is simple in preparation method, adopts the fluororubber material as the base material of the sealing ring, is good in high temperature resistance and solvent resistance, is added with the melamine formaldehyde resin system, is high in functionality, can perform a crosslinking reaction with the filler and the rubber, and improves the mechanical strength and the wear resistance of the sealing ring; the added graphene oxide system improves the heat conductivity and gas barrier property of the sealing ring, is easy to form a brand new functional nano composite system with a fluororubber and melamine formaldehyde resin system, and prolongs the service life of the sealing ring.
Description
Technical Field
The invention relates to the technical field of sealing materials, in particular to a lip-shaped sealing ring for an automobile engine rotating shaft.
Background
The lip-shaped sealing element for the rotating shaft is a common rubber sealing element, has the characteristics of good sealing property, difficult deformation, difficult loosening and falling and the like, and is widely applied to the fields of valves and automobile products. The lip-shaped non-metal sealing ring used at normal temperature has good elasticity, and can meet the sealing requirement without high dimensional precision.
The traditional non-metal framework type rotary shaft lip-shaped sealing ring is formed by vulcanizing a plurality of layers of rubberized fiber canvases in a special die by a laminating forming method to form a semi-finished product of a cloth clamping framework, roughening and coating adhesive slurry on a bonding surface of the cloth clamping framework after cooling, and finally performing secondary die-filling vulcanization together with lip adhesive. The production method has complex process, high production cost caused by two pairs of dies required by two times of vulcanization, and unstable product quality and short service life caused by poor adhesive force between the cloth clamping framework and the lip adhesive. In addition, the existing sealing ring is mostly prepared from nitrile rubber materials, the nitrile rubber has excellent oil resistance and good mechanical property, but due to the existence of unsaturated double bonds in a molecular chain, the heat resistance and the aging resistance of the nitrile rubber are poor; the sealing ring can generate heat under the action of long-term stress and is easy to age and damage, and the fluorine rubber can be used as a sealing material because fluorine atoms are introduced into the molecular chain of the fluorine rubber, so that the heat resistance, the solvent resistance and the oil resistance of the fluorine rubber are obviously improved.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a lip-shaped sealing ring for an automobile engine rotating shaft.
The technical scheme adopted by the invention for solving the technical problems is as follows: a lip-shaped sealing ring for an automobile engine rotating shaft is formed by compounding a fluororubber system, a melamine formaldehyde resin system and a graphene oxide system;
the fluororubber system comprises the following components in parts by weight: 100 parts of fluororubber, 3.5-8.5 parts of diatomite, 10-15 parts of magnesium oxide, 2-5 parts of calcium hydroxide, 5-20 parts of carbon black, 1.5-2.5 parts of bisphenol AF and 0.5-2 parts of BPP;
the melamine formaldehyde resin system comprises the following components in parts by weight: 20-30 parts of melamine, 10-18 parts of paraformaldehyde, 5-10 parts of a 37% formaldehyde solution, 3-8 parts of cellulose sulfonate and 6-15 parts of isopropyl ketone;
the graphene oxide system comprises the following components in parts by weight: 1-1.5 parts of graphene oxide, 10-20 parts of a coupling agent, 5-7.5 parts of an acetic acid solution with the mass fraction of 66.7%, and 30-50 parts of methyl ethyl ketone.
The lip-shaped sealing ring for the automobile engine rotating shaft is characterized in that the fluororubber is vinylidene fluoride-hexafluoropropylene copolymer rubber with Mooney viscosity of 40-60; the carbon black is a mixture of carbon black N110 and carbon black N990, and the mass ratio of the carbon black N110 to the carbon black N990 is 1-2.5: 1.
In the lip-shaped sealing ring for the rotating shaft of the automobile engine, the interlayer spacing of the graphene oxide is 0.78-0.8 nm; the coupling agent is one of KH560 and KH 550.
The preparation method of the lip-shaped sealing ring for the rotating shaft of the automobile engine comprises the following steps:
the method comprises the following steps: preparation of graphene oxide system
Taking 30-50 parts of methyl ethyl ketone and 1-1.5 parts of graphene oxide, carrying out ultrasonic mixing uniformly, then adding 5-7.5 parts of an acetic acid solution with the mass fraction of 66.7% into the mixed solution, continuously mixing uniformly, adding 10-20 parts of a coupling agent, reacting for 8-12 hours under an oil bath at 70-75 ℃, washing with deionized water after reaction, and carrying out vacuum drying to obtain the treated graphene oxide;
step two: preparation of melamine formaldehyde resin systems
Adding 20-30 parts of melamine and 10-18 parts of paraformaldehyde into a reactor, then adding 30-50 parts of deionized water, heating to 55 ℃ under the condition of stirring, adding 5-10 parts of formaldehyde solution with the mass fraction of 37% after uniformly mixing, adjusting the pH value with 20% of sodium hydroxide solution, controlling the pH value to be 8-9, heating to 70 ℃, and reacting for 1-1.5 hours; then adding 6-15 parts of isopropyl ketone and 3-8 parts of cellulose sulfonate, adjusting the pH value to 8-9, and reacting for 2 hours to obtain a melamine formaldehyde resin system;
step three: preparation of sealing ring
Weighing various small materials for later use according to a fluororubber system, setting the temperature of an open mill to be 25 ℃, the rotating speed to be 20r/min and the roll spacing to be 0.8mm, adding fluororubber, then open milling for 2min, simultaneously adding 5-20 parts of carbon black, the graphene oxide system obtained in the step one and 3.5-8.5 parts of diatomite into the fluororubber, mixing for 5min, then adding 2-5 parts of calcium hydroxide and 10-15 parts of magnesium oxide into an open mill, continuously mixing for 3min, adding the melamine formaldehyde resin system obtained in the step two into an open mill for two times, finally adding 1.5-2.5 parts of bisphenol AF and 0.5-2 parts of BPP into the open mill, mixing for 2min, tapping for 3 times respectively, packaging in a triangular bag for 3 times, then adjusting the roller spacing to 0.1mm, performing thin passing and rolling, wherein the number of thin passing and rolling layers is 5 respectively, then adjusting the roller spacing to 1.8mm and blanking to obtain the lip-shaped sealing ring material for the rotating shaft of the automobile engine;
the lip-shaped sealing ring material for the automobile engine rotating shaft is extruded by an extruder and a preforming machine to obtain a semi-finished product, the semi-finished product is placed in a lip-shaped sealing ring forming die for the automobile engine rotating shaft for mold pressing and vulcanization, so that the lip-shaped sealing ring for the automobile engine rotating shaft is obtained, and finally the sealing ring is subjected to post-treatment.
Compared with the prior art, the invention has the following advantages and prominent effects:
the lip-shaped sealing ring for the automobile engine rotating shaft has the beneficial effects that the preparation method is simple, the fluororubber material is used as the base material of the sealing ring, the high temperature resistance and the solvent resistance are good, the melamine formaldehyde resin system is added in the sealing ring, the functionality is high, the melamine formaldehyde resin system can perform a crosslinking reaction with the filler and the rubber, and the mechanical strength and the wear resistance of the sealing ring are improved; the added graphene oxide system improves the heat conductivity and gas barrier property of the sealing ring, is easy to form a brand new functional nano composite system with a fluororubber and melamine formaldehyde resin system, and prolongs the service life of the sealing ring.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[ example 1 ]
A lip-shaped sealing ring for an automobile engine rotating shaft is formed by compounding a fluororubber system, a melamine formaldehyde resin system and a graphene oxide system;
the fluororubber system comprises the following components in parts by weight: 100 parts of fluororubber, 3.5 parts of diatomite, 10 parts of magnesium oxide, 2 parts of calcium hydroxide, 5 parts of carbon black, 1.5 parts of bisphenol AF and 0.5 part of BPP;
the melamine formaldehyde resin system comprises the following components in parts by weight: 20 parts of melamine, 10 parts of paraformaldehyde, 5 parts of a formaldehyde solution with the mass fraction of 37%, 3 parts of cellulose sulfonate and 6 parts of isopropyl ketone;
the graphene oxide system comprises the following components in parts by weight: the graphene oxide film comprises, by mass, 1 part of graphene oxide, 10 parts of a coupling agent, 5 parts of an acetic acid solution with a mass fraction of 66.7%, and 30 parts of methyl ethyl ketone.
Further, the fluororubber is vinylidene fluoride-hexafluoropropylene copolymer rubber with Mooney viscosity of 40-60; the carbon black is a mixture of carbon black N110 and carbon black N990, and the mass ratio of the carbon black N110 to the carbon black N990 is 1: 1.
Further, the interlayer spacing of the graphene oxide is 0.78 nm-0.8 nm; the coupling agent is KH 560.
A preparation method of a lip-shaped sealing ring for an automobile engine rotating shaft comprises the following steps:
the method comprises the following steps: preparation of graphene oxide system
Taking 30 parts of methyl ethyl ketone and 1 part of graphene oxide, carrying out ultrasonic mixing uniformly, then adding 5 parts of an acetic acid solution with the mass fraction of 66.7% into the mixed solution, continuously mixing uniformly, adding 10 parts of a coupling agent, reacting for 8 hours in an oil bath at 70 ℃, washing with deionized water after the reaction, and carrying out vacuum drying to obtain the treated graphene oxide;
step two: preparation of melamine formaldehyde resin systems
Adding 20 parts of melamine and 10 parts of paraformaldehyde into a reactor, adding 30 parts of deionized water, heating to 55 ℃ under the condition of stirring, adding 5 parts of formaldehyde solution with the mass fraction of 37% after uniformly mixing, adjusting the pH value with 20% of sodium hydroxide solution, controlling the pH value to be 8-9, heating to 70 ℃, and reacting for 1 hour; then adding 6 parts of isopropyl ketone and 3 parts of cellulose sulfonate, adjusting the pH value to 8-9, and reacting for 2 hours to obtain a melamine formaldehyde resin system;
step three: preparation of sealing ring
Weighing various small materials for later use according to a fluororubber system, setting the temperature of an open mill to be 25 ℃, the rotating speed to be 20r/min and the roll spacing to be 0.8mm, adding the fluororubber, then open milling for 2min, simultaneously adding 5 parts of carbon black, the graphene oxide system obtained in the step one and 3.5 parts of diatomite into the fluororubber, mixing for 5min, then 2 parts of calcium hydroxide and 10 parts of magnesium oxide are added into an open mill, the mixture is continuously mixed for 3min, adding the melamine formaldehyde resin system obtained in the step two into an open mill for two times, finally adding 1.5 parts of bisphenol AF and 0.5 part of BPP into the open mill, mixing for 2min, tapping for 3 times respectively, packaging in a triangular bag for 3 times, then adjusting the roller spacing to 0.1mm, performing thin passing and rolling, wherein the number of thin passing and rolling layers is 5 respectively, then adjusting the roller spacing to 1.8mm and blanking to obtain the lip-shaped sealing ring material for the rotating shaft of the automobile engine;
the lip-shaped sealing ring material for the automobile engine rotating shaft is processed by an extruder and a preforming machine to obtain a semi-finished product, the semi-finished product is placed into a lip-shaped sealing ring forming die for the automobile engine rotating shaft for mold pressing and vulcanization to obtain the lip-shaped sealing ring for the automobile engine rotating shaft, and finally the sealing ring is subjected to post-treatment, wherein the performances of the sealing ring are shown in table 1.
[ example 2 ]
A preparation method of a lip-shaped sealing ring for an automobile engine rotating shaft comprises the following steps:
the method comprises the following steps: preparation of graphene oxide system
Taking 40 parts of methyl ethyl ketone and 1.8 parts of graphene oxide, carrying out ultrasonic mixing uniformly, then adding 7.5 parts of an acetic acid solution with the mass fraction of 66.7% into the mixed solution, continuously mixing uniformly, adding 13 parts of a coupling agent, reacting for 10 hours in an oil bath at 75 ℃, washing with deionized water after reaction, and carrying out vacuum drying to obtain the treated graphene oxide;
step two: preparation of melamine formaldehyde resin systems
Adding 25 parts of melamine and 15 parts of paraformaldehyde into a reactor, adding 40 parts of deionized water, heating to 55 ℃ under the condition of stirring, adding 8 parts of formaldehyde solution with the mass fraction of 37% after uniformly mixing, adjusting the pH value with 20% sodium hydroxide solution, controlling the pH value to be 8-9, heating to 70 ℃, and reacting for 1 hour; then adding 10 parts of isopropyl ketone and 5 parts of cellulose sulfonate, adjusting the pH value to 8-9, and reacting for 2 hours to obtain a melamine formaldehyde resin system;
step three: preparation of sealing ring
Weighing various small materials for later use according to a fluororubber system, setting the temperature of an open mill to be 25 ℃, the rotating speed to be 20r/min and the roll spacing to be 0.8mm, adding fluororubber, then open milling for 2min, adding 15 parts of carbon black (the mass ratio of the carbon black N110 to the carbon black N990 is 2:1), the graphene oxide system obtained in the step one and 5 parts of diatomite into the fluororubber, mixing for 5min, then adding 2.2 parts of calcium hydroxide and 13 parts of magnesium oxide into the open mill, continuing mixing for 3min, then adding the melamine formaldehyde resin system obtained in the step two into the open mill twice, finally adding 2.1 parts of bisphenol AF and 0.8 part of BPP into the open mill, mixing for 2min, cutting rubber for 3 times respectively, wrapping in a triangular mode for 3 times, then adjusting the roll spacing to be 0.1mm, carrying out thin passing and rolling for 5 times respectively, then adjusting the roll spacing to be 1.8mm, and feeding sheets, obtaining a lip-shaped sealing ring material for an automobile engine rotating shaft;
the lip-shaped sealing ring material for the automobile engine rotating shaft is processed by an extruder and a preforming machine to obtain a semi-finished product, the semi-finished product is placed into a lip-shaped sealing ring forming die for the automobile engine rotating shaft for mold pressing and vulcanization to obtain the lip-shaped sealing ring for the automobile engine rotating shaft, and finally the sealing ring is subjected to post-treatment, wherein the performances of the sealing ring are shown in table 1.
[ example 3 ]
A preparation method of a lip-shaped sealing ring for an automobile engine rotating shaft comprises the following steps:
the method comprises the following steps: preparation of graphene oxide system
Taking 50 parts of methyl ethyl ketone and 1.5 parts of graphene oxide, carrying out ultrasonic mixing uniformly, then adding 7.5 parts of an acetic acid solution with the mass fraction of 66.7% into the mixed solution, continuously mixing uniformly, adding 20 parts of a coupling agent, reacting for 12 hours in an oil bath at 75 ℃, washing with deionized water after reaction, and carrying out vacuum drying to obtain the treated graphene oxide;
step two: preparation of melamine formaldehyde resin systems
Adding 30 parts of melamine and 18 parts of paraformaldehyde into a reactor, then adding 50 parts of deionized water, heating to 55 ℃ under the condition of stirring, adding 10 parts of formaldehyde solution with the mass fraction of 37% after uniformly mixing, adjusting the pH value with 20% sodium hydroxide solution, controlling the pH value to be 8-9, heating to 70 ℃, and reacting for 1.5 hours; then adding 15 parts of isopropyl ketone and 8 parts of cellulose sulfonate, adjusting the pH value to 8-9, and reacting for 2 hours to obtain a melamine formaldehyde resin system;
step three: preparation of sealing ring
Weighing various small materials for later use according to a fluororubber system, setting the temperature of an open mill to be 25 ℃, the rotating speed to be 20r/min and the roll spacing to be 0.8mm, adding fluororubber, then opening for 2min, adding 20 parts of carbon black (the mass ratio of carbon black N110 to carbon black N990 is 2.5:1), the graphene oxide system obtained in the step one and 8.5 parts of diatomite into the fluororubber simultaneously, mixing for 5min, then adding 5 parts of calcium hydroxide and 15 parts of magnesium oxide into the open mill, continuing mixing for 3min, then adding the melamine formaldehyde resin system obtained in the step two into the open mill twice, finally adding 2.5 parts of bisphenol AF and 2 parts of BPP into the open mill, mixing for 2min, cutting rubber for 3 times respectively, wrapping in a triangular mode for 3 times, then adjusting the roll spacing to be 0.1mm, performing thin-pass and rolling for 5 times respectively, then adjusting the roll spacing to be 1.8mm, and feeding sheets, obtaining a lip-shaped sealing ring material for an automobile engine rotating shaft;
the lip-shaped sealing ring material for the automobile engine rotating shaft is processed by an extruder and a preforming machine to obtain a semi-finished product, the semi-finished product is placed into a lip-shaped sealing ring forming die for the automobile engine rotating shaft for mold pressing and vulcanization to obtain the lip-shaped sealing ring for the automobile engine rotating shaft, and finally the sealing ring is subjected to post-treatment, wherein the performances of the sealing ring are shown in table 1.
TABLE 1 Performance of the products of the examples
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.
Claims (4)
1. The utility model provides an automobile engine lip seal for rotation axis which characterized in that: the lip-shaped sealing ring is formed by compounding a fluororubber system, a melamine formaldehyde resin system and a graphene oxide system;
the fluororubber system comprises the following components in parts by weight: 100 parts of fluororubber, 3.5-8.5 parts of diatomite, 10-15 parts of magnesium oxide, 2-5 parts of calcium hydroxide, 5-20 parts of carbon black, 1.5-2.5 parts of bisphenol AF and 0.5-2 parts of BPP;
the melamine formaldehyde resin system comprises the following components in parts by weight: 20-30 parts of melamine, 10-18 parts of paraformaldehyde, 5-10 parts of a 37% formaldehyde solution, 3-8 parts of cellulose sulfonate and 6-15 parts of isopropyl ketone;
the graphene oxide system comprises the following components in parts by weight: 1-1.5 parts of graphene oxide, 10-20 parts of a coupling agent, 5-7.5 parts of an acetic acid solution with the mass fraction of 66.7%, and 30-50 parts of methyl ethyl ketone.
2. The lip seal ring for the rotating shaft of the automobile engine according to claim 1, wherein the fluororubber is a vinylidene fluoride-hexafluoropropylene copolymer rubber having a mooney viscosity of 40-60; the carbon black is a mixture of carbon black N110 and carbon black N990, and the mass ratio of the carbon black N110 to the carbon black N990 is 1-2.5: 1.
3. The lip seal ring for the rotating shaft of the automobile engine as claimed in claim 1, wherein the interlayer spacing of the graphene oxide is 0.78nm to 0.8 nm; the coupling agent is one of KH560 and KH 550.
4. The method for preparing the lip-shaped sealing ring for the rotating shaft of the automobile engine according to any one of claims 1 to 3, characterized by comprising the following steps:
the method comprises the following steps: preparation of graphene oxide system
Taking 30-50 parts of methyl ethyl ketone and 1-1.5 parts of graphene oxide, carrying out ultrasonic mixing uniformly, then adding 5-7.5 parts of an acetic acid solution with the mass fraction of 66.7% into the mixed solution, continuously mixing uniformly, adding 10-20 parts of a coupling agent, reacting for 8-12 hours under an oil bath at 70-75 ℃, washing with deionized water after reaction, and carrying out vacuum drying to obtain the treated graphene oxide;
step two: preparation of melamine formaldehyde resin systems
Adding 20-30 parts of melamine and 10-18 parts of paraformaldehyde into a reactor, then adding 30-50 parts of deionized water, heating to 55 ℃ under the condition of stirring, adding 5-10 parts of formaldehyde solution with the mass fraction of 37% after uniformly mixing, adjusting the pH value with 20% of sodium hydroxide solution, controlling the pH value to be 8-9, heating to 70 ℃, and reacting for 1-1.5 hours; then adding 6-15 parts of isopropyl ketone and 3-8 parts of cellulose sulfonate, adjusting the pH value to 8-9, and reacting for 2 hours to obtain a melamine formaldehyde resin system;
step three: preparation of sealing ring
Weighing various small materials for later use according to a fluororubber system, setting the temperature of an open mill to be 25 ℃, the rotating speed to be 20r/min and the roll spacing to be 0.8mm, adding fluororubber, then open milling for 2min, simultaneously adding 5-20 parts of carbon black, the graphene oxide system obtained in the step one and 3.5-8.5 parts of diatomite into the fluororubber, mixing for 5min, then adding 2-5 parts of calcium hydroxide and 10-15 parts of magnesium oxide into an open mill, continuously mixing for 3min, adding the melamine formaldehyde resin system obtained in the step two into an open mill for two times, finally adding 1.5-2.5 parts of bisphenol AF and 0.5-2 parts of BPP into the open mill, mixing for 2min, tapping for 3 times respectively, packaging in a triangular bag for 3 times, then adjusting the roller spacing to 0.1mm, performing thin passing and rolling, wherein the number of thin passing and rolling layers is 5 respectively, then adjusting the roller spacing to 1.8mm and blanking to obtain the lip-shaped sealing ring material for the rotating shaft of the automobile engine;
the lip-shaped sealing ring material for the automobile engine rotating shaft is extruded by an extruder and a preforming machine to obtain a semi-finished product, the semi-finished product is placed in a lip-shaped sealing ring forming die for the automobile engine rotating shaft for mold pressing and vulcanization, so that the lip-shaped sealing ring for the automobile engine rotating shaft is obtained, and finally the sealing ring is subjected to post-treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811335469.5A CN111171480B (en) | 2018-11-10 | 2018-11-10 | Lip-shaped sealing ring for automobile engine rotating shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811335469.5A CN111171480B (en) | 2018-11-10 | 2018-11-10 | Lip-shaped sealing ring for automobile engine rotating shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111171480A CN111171480A (en) | 2020-05-19 |
| CN111171480B true CN111171480B (en) | 2022-02-18 |
Family
ID=70651756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811335469.5A Active CN111171480B (en) | 2018-11-10 | 2018-11-10 | Lip-shaped sealing ring for automobile engine rotating shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111171480B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103601981A (en) * | 2013-10-28 | 2014-02-26 | 安徽祈艾特电子科技有限公司 | Synthetic ethylene-propylene-diene monomer rubber capacitor sealing ring and preparation method thereof |
| CN104530611B (en) * | 2014-12-31 | 2016-09-07 | 宁波佳乐特橡塑机电有限公司 | A kind of grinding roller sealing ring material and preparation method thereof |
| CN105295086B (en) * | 2015-12-07 | 2018-02-23 | 成都玉龙化工有限公司 | Maceration extract, preparation method and the impregnation method of soft melamine foamed plastic |
| DE102016109620A1 (en) * | 2016-05-25 | 2017-11-30 | Leibniz-Institut Für Polymerforschung Dresden E.V. | Elastomeric composition and process for its preparation |
| CN106317712B (en) * | 2016-08-19 | 2018-11-13 | 青岛海力威新材料科技股份有限公司 | A kind of engine oil seal fluorubber and preparation method thereof |
| CN106928601B (en) * | 2017-04-05 | 2019-06-21 | 青岛海信电器股份有限公司 | A kind of light aging resisting fluorubber composite material and preparation method and application |
-
2018
- 2018-11-10 CN CN201811335469.5A patent/CN111171480B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111171480A (en) | 2020-05-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101693411B (en) | Method for producing vee belt by adopting high-pressure osmosis single-sided friction cloth | |
| WO2014040397A1 (en) | Fluoro-rubber compound and preparation method therefor | |
| CN104017280A (en) | Process for producing ageing-resistant tire bladder sizing material | |
| CN103665843B (en) | A kind of preparation method of the impermeable nylon material for composite fuel case | |
| CN111171480B (en) | Lip-shaped sealing ring for automobile engine rotating shaft | |
| CN109532154B (en) | Flame-retardant co-extruded wood-plastic profile | |
| CN109679176A (en) | Cable resistance to extremely cold chloroprene rubber sheath material and preparation method thereof | |
| CN112852133A (en) | Anti-droplet PLA/PVA composite material and preparation method thereof | |
| CN116769265A (en) | Heat-conducting sealing polytetrafluoroethylene composite material for packing and preparation method thereof | |
| CN103408882A (en) | Thermoplastic vulcanized rubber and preparation method thereof | |
| CN114230877B (en) | Blending system and mixing process of isoprene rubber and brominated butyl rubber | |
| CN105421148A (en) | Preparation process of polyethylene coated paper | |
| CN112646275B (en) | Conductive polyolefin master batch and preparation method thereof | |
| CN112143047B (en) | Preparation method of rubber | |
| CN112538202A (en) | Polyethylene pipe for water supply and extrusion molding method thereof | |
| CN107325347A (en) | A kind of many lip rubber seal | |
| CN113717482A (en) | Super-medium-resistant post-processor rubber tube, preparation process thereof and rubber tube assembly | |
| CN108641133B (en) | Anti-firing conveyer belt | |
| CN114854205A (en) | High-tear-strength silicone rubber and preparation method thereof | |
| CN111171416A (en) | Modified styrene butadiene rubber hose with high gas barrier property and preparation method thereof | |
| WO2019095786A1 (en) | Fluororubber oil sealing composition and preparation method therefor | |
| CN115071138B (en) | Large-size fluororubber sealing ring and preparation method thereof | |
| CN117124685B (en) | Polyethylene single-material composite film, preparation method and application thereof in high-barrier food packaging | |
| CN104927339A (en) | Nanometer special engineering plastic and preparation method thereof | |
| CN105802107A (en) | High-temperature-resisting and creep-resisting electron carrier band sheet and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |