CN111692337A - Rubber sealing ring and preparation method thereof - Google Patents
Rubber sealing ring and preparation method thereof Download PDFInfo
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- CN111692337A CN111692337A CN202010539206.7A CN202010539206A CN111692337A CN 111692337 A CN111692337 A CN 111692337A CN 202010539206 A CN202010539206 A CN 202010539206A CN 111692337 A CN111692337 A CN 111692337A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/102—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by material
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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
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/062—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces characterised by the geometry of the seat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/108—Special methods for making a non-metallic packing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Sealing Devices (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a rubber sealing ring and a preparation method thereof, wherein the rubber sealing ring comprises an inner side ring body, an outer side ring body and an adhesive layer; the structure and the process of the traditional rubber sealing ring are changed, the rubber sealing ring is longitudinally split to form the inner side ring body and the outer side ring body, the annular telescopic grooves are formed in the middle of the outer side of the inner side ring body, so that the flexibility of the inner side ring body is better, the inner side ring body is extruded after the shaft is inserted into the inner side ring body, the inner side ring body is attached to the outer side of the periphery of the shaft, and the sealing effect is more durable.
Description
Technical Field
The invention relates to a rubber sealing ring and a preparation method thereof.
Background
Most of sealing rings are made of soft materials such as rubber and the like, the sealing rings mainly provide sealing force by the elasticity of the materials to realize the sealing effect, the cross sections of the existing sealing rings are mostly in a standard circle shape or an oval shape, and the inner and outer circumferential surfaces of the existing sealing rings are extruded to form inner and outer sealing surfaces, so the sealing rings with the structure are widely applied to various industries due to convenient manufacture and low cost; however, the above-described seal ring is likely to undergo aged deformation and deterioration in stretchability after long-term use, and further, the effect of the seal contact is degraded, resulting in deterioration of sealing performance.
Disclosure of Invention
Aiming at the defects of the prior art, the invention solves the problems that: the rubber sealing ring with good elastic flexibility and good sealing effect and the preparation method thereof are provided.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a rubber sealing ring comprises an inner ring body, an outer ring body and an adhesive layer; an annular telescopic groove is formed in the outer side of the middle of the inner side ring body; the outer ring body is arranged on the outer side of the periphery of the inner ring body; a plurality of annular bonding grooves are respectively formed in the upper and lower ring surfaces of the inner side of the outer ring body and the outer side of the inner ring body; the annular bonding grooves on the inner side of the outer ring body and the outer side of the inner ring body are respectively butted; the annular bonding groove is filled with a bonding layer; the inner ring body and the outer ring body comprise the following components in parts by weight: 50-60 parts of nitrile rubber, 20-25 parts of acrylate rubber, 5-10 parts of alkyd resin, 2-5 parts of carbon black, 1-2 parts of anti-aging agent and 1-2 parts of sulfur; the adhesive layer comprises the following components in parts by weight: 50-60 parts of polyurethane, 10-20 parts of epoxy resin and 50-100 parts of flax short fiber.
Furthermore, the sections of the inner side ring body and the outer side ring body are both in a semicircular structure.
Furthermore, the section of the annular telescopic groove at the outer side in the middle of the inner side ring body is in a V-shaped structure with a large outer part and a small inner part.
Furthermore, the annular bonding grooves are of V-shaped structures with large outer parts and small inner parts.
A preparation method of a rubber sealing ring comprises the following steps:
s1, preparing a sealing ring: carrying out banburying, open milling, molding and vulcanization on nitrile rubber, acrylate rubber, alkyd resin, carbon black, an anti-aging agent and sulfur according to a preset ratio to form the sealing ring;
s2, axial cutting: cutting the prepared sealing ring from top to bottom through a cutting ring to form an inner ring body and an outer ring body;
s3, slotting: an annular telescopic groove is formed in the middle of the outer side of the inner ring body; then a plurality of pairs of annular bonding grooves corresponding in position are respectively formed on the upper ring surface and the lower ring surface on the inner side of the outer ring body and the outer side of the inner ring body;
s4, preparing a bonding material: adding polyurethane, epoxy resin and flax short fiber into water according to a ratio, and uniformly stirring and mixing to form a pasty bonding material;
s5, bonding and curing: filling brushing adhesive on the annular adhesive grooves on the inner side of the outer ring body and the outer side of the inner ring body; and then, the outer ring body is arranged on the peripheral outer side of the inner ring body, so that the bonding materials on the annular bonding grooves on the inner side of the outer ring body and the outer side of the inner ring body are butted, and then, the rubber sealing ring is heated and cured to form the rubber sealing ring.
Further, the depth of the annular expansion groove opened in the step S3 is 2/5 to 3/5 of the radial thickness of the inner ring body.
Further, the weight ratio of the total amount of the polyurethane, the epoxy resin and the flax short fibers in the step S4 to water is 4-3: 1.
Further, in the step S5, the heating time is 20 to 30min, and the heating temperature is 80 to 90 ℃.
The invention has the advantages of
1. The structure and the process of the traditional rubber sealing ring are changed, the rubber sealing ring is longitudinally split to form the inner side ring body and the outer side ring body, the annular telescopic grooves are formed in the middle of the outer side of the inner side ring body, so that the flexibility of the inner side ring body is better, the inner side ring body is extruded after the shaft is inserted into the inner side ring body, the inner side ring body is attached to the outer side of the periphery of the shaft, and the sealing effect is more durable.
2. In order to improve the bonding stability of the inner ring body and the outer ring body and consider that the bonding strength cannot be too high to influence the flexibility of the inner ring body, a mixed system of three components of polyurethane, epoxy resin and flax short fibers is selected as a bonding material, firstly, the polyurethane and the epoxy resin provide certain bonding strength to reach certain tear resistance strength, and meanwhile, the flax short fibers are distributed in the bonding material in a staggered mode and have a soft characteristic, so that a network system with a plurality of interlaced flax short fibers is formed after curing, so that the whole bonding material has certain flexibility while certain strength is ensured, the hard property of the bonding material is reduced, and the inner ring body has certain flexibility.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1
As shown in fig. 1, a rubber seal ring comprises an inner ring body 2, an outer ring body 1 and an adhesive layer 4; the middle outer side of the inner side ring body 2 is provided with an annular telescopic groove 21; the outer ring body 1 is arranged on the outer side of the periphery of the inner ring body 2; a plurality of annular bonding grooves 3 are respectively formed on the upper and lower ring surfaces of the inner side of the outer ring body 1 and the outer side of the inner ring body 2; the positions of the annular bonding grooves 3 on the inner side of the outer ring body 1 and the outer side of the inner ring body 2 are respectively butted; the annular bonding groove 3 is filled with a bonding layer 4; the inner ring body 2 and the outer ring body 1 comprise the following components in parts by weight: 50 parts of nitrile rubber, 20 parts of acrylate rubber, 5 parts of alkyd resin, 2 parts of carbon black, 1 part of anti-aging agent and 1 part of sulfur; the adhesive layer comprises the following components in parts by weight: 50 parts of polyurethane, 10 parts of epoxy resin and 50 parts of flax short fiber. Furthermore, the sections of the inner side ring body and the outer side ring body are both in a semicircular structure. Furthermore, the section of the annular telescopic groove at the outer side in the middle of the inner side ring body is in a V-shaped structure with a large outer part and a small inner part. Furthermore, the annular bonding grooves are of V-shaped structures with large outer parts and small inner parts.
A preparation method of a rubber sealing ring comprises the following steps:
s1, preparing a sealing ring: and banburying, open milling, molding and vulcanizing nitrile rubber, acrylate rubber, alkyd resin, carbon black, an anti-aging agent and sulfur according to a predetermined ratio to form the sealing ring.
S2, axial cutting: and cutting the prepared sealing ring from top to bottom by a cutting ring to form an inner ring body and an outer ring body.
S3, slotting: an annular telescopic groove is formed in the middle of the outer side of the inner ring body; then a plurality of pairs of annular bonding grooves corresponding in position are respectively formed on the upper ring surface and the lower ring surface on the inner side of the outer ring body and the outer side of the inner ring body; the depth of the annular expansion groove is 2/5 the radial thickness of the inner ring body.
S4, preparing a bonding material: adding polyurethane, epoxy resin and flax short fiber into water according to a ratio, and uniformly stirring and mixing to form a pasty bonding material; the weight ratio of the total amount of polyurethane, ammonium carbonate, epoxy resin and flax short fiber to water is 4: 1.
S5, bonding and curing: filling brushing adhesive on the annular adhesive grooves on the inner side of the outer ring body and the outer side of the inner ring body; then, the outer ring body is arranged on the outer side of the periphery of the inner ring body, so that the bonding materials on the annular bonding grooves on the inner side of the outer ring body and the outer side of the inner ring body are butted, and then heating and curing are carried out, so that the rubber sealing ring is formed; the heating time is 20min, and the heating temperature is 80 ℃.
Example 2
As shown in fig. 1, a rubber seal ring comprises an inner ring body 2, an outer ring body 1 and an adhesive layer 4; the middle outer side of the inner side ring body 2 is provided with an annular telescopic groove 21; the outer ring body 1 is arranged on the outer side of the periphery of the inner ring body 2; a plurality of annular bonding grooves 3 are respectively formed on the upper and lower ring surfaces of the inner side of the outer ring body 1 and the outer side of the inner ring body 2; the positions of the annular bonding grooves 3 on the inner side of the outer ring body 1 and the outer side of the inner ring body 2 are respectively butted; the annular bonding groove 3 is filled with a bonding layer 4; the inner ring body 2 and the outer ring body 1 comprise the following components in parts by weight: 55 parts of nitrile rubber, 22 parts of acrylate rubber, 7 parts of alkyd resin, 3 parts of carbon black, 2 parts of anti-aging agent and 1 part of sulfur; the adhesive layer comprises the following components in parts by weight: 55 parts of polyurethane, 15 parts of epoxy resin and 80 parts of flax short fiber. Furthermore, the sections of the inner side ring body and the outer side ring body are both in a semicircular structure. Furthermore, the section of the annular telescopic groove at the outer side in the middle of the inner side ring body is in a V-shaped structure with a large outer part and a small inner part. Furthermore, the annular bonding grooves are of V-shaped structures with large outer parts and small inner parts.
A preparation method of a rubber sealing ring comprises the following steps:
s1, preparing a sealing ring: and banburying, open milling, molding and vulcanizing nitrile rubber, acrylate rubber, alkyd resin, carbon black, an anti-aging agent and sulfur according to a predetermined ratio to form the sealing ring.
S2, axial cutting: and cutting the prepared sealing ring from top to bottom by a cutting ring to form an inner ring body and an outer ring body.
S3, slotting: an annular telescopic groove is formed in the middle of the outer side of the inner ring body; then a plurality of pairs of annular bonding grooves corresponding in position are respectively formed on the upper ring surface and the lower ring surface on the inner side of the outer ring body and the outer side of the inner ring body; the depth of the annular expansion groove is 3/5 the radial thickness of the inner ring body.
S4, preparing a bonding material: adding polyurethane, epoxy resin and flax short fiber into water according to a ratio, and uniformly stirring and mixing to form a pasty bonding material; the weight ratio of the total amount of polyurethane, ammonium carbonate, epoxy resin and flax short fiber to water is 3: 1.
S5, bonding and curing: filling brushing adhesive on the annular adhesive grooves on the inner side of the outer ring body and the outer side of the inner ring body; then, the outer ring body is arranged on the outer side of the periphery of the inner ring body, so that the bonding materials on the annular bonding grooves on the inner side of the outer ring body and the outer side of the inner ring body are butted, and then heating and curing are carried out, so that the rubber sealing ring is formed; the heating time is 25min, and the heating temperature is 85 ℃.
Example 3
As shown in fig. 1, a rubber seal ring comprises an inner ring body 2, an outer ring body 1 and an adhesive layer 4; the middle outer side of the inner side ring body 2 is provided with an annular telescopic groove 21; the outer ring body 1 is arranged on the outer side of the periphery of the inner ring body 2; a plurality of annular bonding grooves 3 are respectively formed on the upper and lower ring surfaces of the inner side of the outer ring body 1 and the outer side of the inner ring body 2; the positions of the annular bonding grooves 3 on the inner side of the outer ring body 1 and the outer side of the inner ring body 2 are respectively butted; the annular bonding groove 3 is filled with a bonding layer 4; the inner ring body 2 and the outer ring body 1 comprise the following components in parts by weight: 60 parts of nitrile rubber, 25 parts of acrylate rubber, 10 parts of alkyd resin, 5 parts of carbon black, 2 parts of anti-aging agent and 2 parts of sulfur; the adhesive layer comprises the following components in parts by weight: 60 parts of polyurethane, 20 parts of epoxy resin and 100 parts of flax short fiber. Furthermore, the sections of the inner side ring body and the outer side ring body are both in a semicircular structure. Furthermore, the section of the annular telescopic groove at the outer side in the middle of the inner side ring body is in a V-shaped structure with a large outer part and a small inner part. Furthermore, the annular bonding grooves are of V-shaped structures with large outer parts and small inner parts.
A preparation method of a rubber sealing ring comprises the following steps:
s1, preparing a sealing ring: and banburying, open milling, molding and vulcanizing nitrile rubber, acrylate rubber, alkyd resin, carbon black, an anti-aging agent and sulfur according to a predetermined ratio to form the sealing ring.
S2, axial cutting: and cutting the prepared sealing ring from top to bottom by a cutting ring to form an inner ring body and an outer ring body.
S3, slotting: an annular telescopic groove is formed in the middle of the outer side of the inner ring body; then a plurality of pairs of annular bonding grooves corresponding in position are respectively formed on the upper ring surface and the lower ring surface on the inner side of the outer ring body and the outer side of the inner ring body; the depth of the annular expansion groove is 2/5 the radial thickness of the inner ring body.
S4, preparing a bonding material: adding polyurethane, epoxy resin and flax short fiber into water according to a ratio, and uniformly stirring and mixing to form a pasty bonding material; the weight ratio of the total amount of polyurethane, ammonium carbonate, epoxy resin and flax short fiber to water is 4: 1.
S5, bonding and curing: filling brushing adhesive on the annular adhesive grooves on the inner side of the outer ring body and the outer side of the inner ring body; then, the outer ring body is arranged on the outer side of the periphery of the inner ring body, so that the bonding materials on the annular bonding grooves on the inner side of the outer ring body and the outer side of the inner ring body are butted, and then heating and curing are carried out, so that the rubber sealing ring is formed; the heating time is 30min, and the heating temperature is 90 ℃.
Comparative example 1
60 parts of nitrile rubber, 25 parts of acrylate rubber, 10 parts of alkyd resin, 5 parts of carbon black, 2 parts of anti-aging agent and 2 parts of sulfur are mixed and subjected to banburying, open milling, molding and vulcanization to form the sealing ring.
The following table shows the results of the test conducted on the elongation at break of the seal rings prepared in the examples of the present invention and the seal rings prepared in the comparative examples.
| Group of embodiments | Elongation at break% |
| Example 1 | 381.3 |
| Example 2 | 379.5 |
| Example 3 | 382.1 |
| Comparative example 1 | 372.2 |
From the above table, it can be seen that the elongation at break of the present invention is qualitatively improved; the structure and the process of the traditional rubber sealing ring are changed, the rubber sealing ring is longitudinally split to form the inner side ring body and the outer side ring body, the annular telescopic grooves are formed in the middle of the outer side of the inner side ring body, so that the flexibility of the inner side ring body is better, the inner side ring body is extruded after the shaft is inserted into the inner side ring body, the attaching area of the inner side ring body on the outer side of the periphery of the shaft is larger, and the sealing effect is better; in order to improve the bonding stability of the inner ring body and the outer ring body and consider that the bonding strength cannot be too high to influence the flexibility of the inner ring body, a mixed system of three components of polyurethane, epoxy resin and flax short fibers is selected as a bonding material, firstly, the polyurethane and the epoxy resin provide certain bonding strength to reach certain tear resistance strength, and meanwhile, the flax short fibers are distributed in the bonding material in a staggered mode and have a soft characteristic, so that a network system with a plurality of interlaced flax short fibers is formed after curing, so that the whole bonding material has certain flexibility while certain strength is ensured, the hard property of the bonding material is reduced, and the inner ring body has certain flexibility.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A rubber sealing ring is characterized by comprising an inner ring body, an outer ring body and an adhesive layer; an annular telescopic groove is formed in the outer side of the middle of the inner side ring body; the outer ring body is arranged on the outer side of the periphery of the inner ring body; a plurality of annular bonding grooves are respectively formed in the upper and lower ring surfaces of the inner side of the outer ring body and the outer side of the inner ring body; the annular bonding grooves on the inner side of the outer ring body and the outer side of the inner ring body are respectively butted; the annular bonding groove is filled with a bonding layer; the inner ring body and the outer ring body comprise the following components in parts by weight: 50-60 parts of nitrile rubber, 20-25 parts of acrylate rubber, 5-10 parts of alkyd resin, 2-5 parts of carbon black, 1-2 parts of anti-aging agent and 1-2 parts of sulfur; the adhesive layer comprises the following components in parts by weight: 50-60 parts of polyurethane, 10-20 parts of epoxy resin and 50-100 parts of flax short fiber.
2. The rubber seal ring of claim 1, wherein the inner ring and the outer ring each have a semi-circular configuration in cross-section.
3. The rubber seal ring of claim 1, wherein the cross section of the middle outer annular expansion groove of the inner ring body is a V-shaped structure with a larger outer part and a smaller inner part.
4. The rubber seal ring of claim 1, wherein said annular bonding grooves each have a V-shaped configuration with a larger outer portion and a smaller inner portion.
5. The method for producing a rubber seal ring according to claim 1, characterized by comprising the steps of:
s1, preparing a sealing ring: carrying out banburying, open milling, molding and vulcanization on nitrile rubber, acrylate rubber, alkyd resin, carbon black, an anti-aging agent and sulfur according to a preset ratio to form the sealing ring;
s2, axial cutting: cutting the prepared sealing ring from top to bottom through a cutting ring to form an inner ring body and an outer ring body;
s3, slotting: an annular telescopic groove is formed in the middle of the outer side of the inner ring body; then a plurality of pairs of annular bonding grooves corresponding in position are respectively formed on the upper ring surface and the lower ring surface on the inner side of the outer ring body and the outer side of the inner ring body;
s4, preparing a bonding material: adding polyurethane, epoxy resin and flax short fiber into water according to a ratio, and uniformly stirring and mixing to form a pasty bonding material;
s5, bonding and curing: filling brushing adhesive on the annular adhesive grooves on the inner side of the outer ring body and the outer side of the inner ring body; and then, the outer ring body is arranged on the peripheral outer side of the inner ring body, so that the bonding materials on the annular bonding grooves on the inner side of the outer ring body and the outer side of the inner ring body are butted, and then, the rubber sealing ring is heated and cured to form the rubber sealing ring.
6. The method for preparing a rubber sealing ring according to claim 5, wherein the depth of the annular expansion groove formed in the step S3 is 2/5 to 3/5 of the radial thickness of the inner ring body.
7. The method for preparing a rubber sealing ring according to claim 5, wherein the weight ratio of the total amount of the polyurethane, the epoxy resin and the flax short fibers in the step S4 to the water is 4-3: 1.
8. The method for producing a rubber seal ring according to claim 5, wherein the heating time in step S5 is 20 to 30min, and the heating temperature is 80 to 90 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010539206.7A CN111692337A (en) | 2020-06-14 | 2020-06-14 | Rubber sealing ring and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010539206.7A CN111692337A (en) | 2020-06-14 | 2020-06-14 | Rubber sealing ring and preparation method thereof |
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| CN111692337A true CN111692337A (en) | 2020-09-22 |
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| CN202010539206.7A Withdrawn CN111692337A (en) | 2020-06-14 | 2020-06-14 | Rubber sealing ring and preparation method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1277575A (en) * | 1997-10-27 | 2000-12-20 | 大金工业株式会社 | Perfluororubber laminate and process for prodcing the same |
| CN201180788Y (en) * | 2008-01-31 | 2009-01-14 | 尚关奎 | Hollow cutting edge type sealing member |
| CN101813189A (en) * | 2010-04-19 | 2010-08-25 | 常州朗博汽车零部件有限公司 | Hollow annular rubber sealing element and manufacturing method thereof |
| CN103305170A (en) * | 2012-03-16 | 2013-09-18 | 比亚迪股份有限公司 | Bi-component adhesive composition and preparation method thereof |
| CN104817800A (en) * | 2015-04-30 | 2015-08-05 | 柳州玲通科技有限责任公司 | Rubber sealing materials |
| CN208900714U (en) * | 2017-12-20 | 2019-05-24 | 潍柴动力股份有限公司 | Sealing ring and sealing structure |
-
2020
- 2020-06-14 CN CN202010539206.7A patent/CN111692337A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1277575A (en) * | 1997-10-27 | 2000-12-20 | 大金工业株式会社 | Perfluororubber laminate and process for prodcing the same |
| CN201180788Y (en) * | 2008-01-31 | 2009-01-14 | 尚关奎 | Hollow cutting edge type sealing member |
| CN101813189A (en) * | 2010-04-19 | 2010-08-25 | 常州朗博汽车零部件有限公司 | Hollow annular rubber sealing element and manufacturing method thereof |
| CN103305170A (en) * | 2012-03-16 | 2013-09-18 | 比亚迪股份有限公司 | Bi-component adhesive composition and preparation method thereof |
| CN104817800A (en) * | 2015-04-30 | 2015-08-05 | 柳州玲通科技有限责任公司 | Rubber sealing materials |
| CN208900714U (en) * | 2017-12-20 | 2019-05-24 | 潍柴动力股份有限公司 | Sealing ring and sealing structure |
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Application publication date: 20200922 |
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| WW01 | Invention patent application withdrawn after publication |