CN109161107B - O-shaped sealing ring - Google Patents
O-shaped sealing ring Download PDFInfo
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- CN109161107B CN109161107B CN201810909224.2A CN201810909224A CN109161107B CN 109161107 B CN109161107 B CN 109161107B CN 201810909224 A CN201810909224 A CN 201810909224A CN 109161107 B CN109161107 B CN 109161107B
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- sealing ring
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- shaped sealing
- butyl rubber
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C08L23/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
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- 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
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- 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)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to an O-shaped sealing ring, which relates to the field of sealing rings and comprises the following raw materials in parts by weight: modified polypropylene: 18-25 parts of modified butyl rubber: 20-27 parts of natural rubber, 10-15 parts of zinc oxide, 6-9 parts of calcium stearate, 5-7 parts of morpholine disulfide, 4-7 parts of antioxidant, 5-10 parts of oxidized polyethylene and 5-10 parts of talcum powder.
Description
Technical Field
The invention relates to the field of sealing rings, in particular to an O-shaped sealing ring.
Background
The O-shaped sealing ring is a rubber ring with a circular cross section, is called an O-shaped sealing ring because the cross section is O-shaped, is widely applied to pneumatic devices and hydraulic devices, is made of butadiene-acrylonitrile rubber, and effectively improves the sealing performance of the pneumatic devices and the hydraulic devices by means of the elastic deformation capacity of the O-shaped sealing ring.
However, in the repeated practice process, the O-shaped sealing ring can be hardened and damaged in the long-term corrosion-resistant extrusion process, so that the sealing of an oil path and an air path of a machine connecting part cannot be effectively ensured, and irrecoverable consequences are caused.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the O-shaped sealing ring, and the sealing performance of the O-shaped sealing ring is effectively improved by optimizing the formula and using novel materials.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
an O-shaped sealing ring comprises the following raw materials in parts by weight: modified polypropylene: 18-25 parts of modified butyl rubber: 20-27 parts of natural rubber, 10-15 parts of zinc oxide, 6-9 parts of calcium stearate, 5-7 parts of morpholine disulfide, 4-7 parts of antioxidant, 5-10 parts of oxidized polyethylene and 5-10 parts of talcum powder.
Preferably, the feed comprises the following raw materials in parts by weight: modified polypropylene: 20-22 parts of modified butyl rubber: 23-25 parts of natural rubber, 12-14 parts of zinc oxide, 7-8 parts of stearic acid, 6-7 parts of morpholine disulfide, 5-6 parts of antioxidant, 7-8 parts of oxidized polyethylene and 7-8 parts of talcum powder.
Preferably, the feed comprises the following raw materials in parts by weight: modified polypropylene: 21 parts of modified butyl rubber: 24 parts of natural rubber, 13 parts of zinc oxide, 7 parts of stearic acid, 7 parts of morpholine disulfide, 5 parts of antioxidant, 7 parts of oxidized polyethylene and 7 parts of talcum powder.
Preferably, the modified polypropylene is prepared by mixing and stirring polypropylene, mica and magnesium sulfate whiskers in a high-speed stirrer at 80-90 ℃ for 8-15 min.
Preferably, the mass specific gravity of the mica and the magnesium sulfate whisker is 2: 1.
Preferably, the modified butyl rubber is prepared by placing butyl rubber and trichloroacetic acid on an open mill, and mixing for 8-15 min.
The preparation method of the O-shaped sealing ring is characterized by comprising the following steps;
(1) according to the weight portion, the modified butyl rubber, the modified polypropylene and the natural rubber are heated and dissolved, stirred and mixed, and banburying is carried out for 15-20min on an open mill at 80-110 ℃.
(2) Respectively blanking zinc oxide, calcium stearate, morpholine disulfide, an antioxidant, oxidized polyethylene and talcum powder at high temperature according to the weight part ratio, mixing for 10-15min, and forming;
(3) pouring the formed rubber material into a mold, carrying out vulcanization treatment for 5-8min, controlling the temperature at 170-2。
(4) Trimming, inspecting, packaging and warehousing.
Preferably, the O-shaped sealing ring is phi 150 multiplied by phi 120 multiplied by 15.
(III) advantageous effects
The invention provides an O-shaped sealing ring, which has the following beneficial effects:
in the prior art, butadiene-acrylonitrile rubber is generally used as a raw material for preparing rubber products with sealing functions, and although the butadiene-acrylonitrile rubber has a certain sealing effect, the butadiene-acrylonitrile rubber has certain improvement space in the aspects of tensile strength, elongation at break, service life and the like.
According to the invention, various rubber raw materials are compounded, so that the defects of holes, dislocation, particle interfaces and the like in the material are overcome, and meanwhile, the raw materials are correspondingly modified, so that the overall mechanical property of the material is further improved.
Meanwhile, the auxiliary agent is preferably selected, the content proportion of the auxiliary agent in the formula is limited, the bending elasticity of the raw material is enhanced, and the service life of the O-shaped sealing ring is prolonged.
The novel material is used for manufacturing, effectively sealing the oil circuit and the gas circuit of the connecting part of the novel material, and preventing loss caused by leakage of gas and the oil circuit.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but 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 invention.
Example 1:
mixing and stirring polypropylene, mica and magnesium sulfate whisker in a high-speed stirrer, wherein the mass proportion of the mica to the magnesium sulfate whisker is 2:1, and stirring for 15min at 80 ℃ to obtain the modified polypropylene.
And (3) placing the butyl rubber and trichloroacetic acid on an open mill, and mixing for 15min to obtain the modified butyl rubber.
An O-shaped sealing ring comprises the following raw materials in parts by weight: modified polypropylene: 18 parts of modified butyl rubber: 20 parts of natural rubber, 15 parts of zinc oxide, 9 parts of calcium stearate, 5 parts of morpholine disulfide, 7 parts of antioxidant, 5 parts of oxidized polyethylene and 5 parts of talcum powder.
The preparation method of the O-shaped sealing ring comprises the following steps:
(1) according to the weight portion, the modified butyl rubber, the modified polypropylene and the natural rubber are heated and dissolved, stirred and mixed, and are banburied for 15min at 110 ℃ on an open mill.
(2) Respectively blanking zinc oxide, calcium stearate, morpholine disulfide, an antioxidant, oxidized polyethylene and talcum powder at high temperature according to the weight part ratio, mixing for 10min, and forming;
(3) pouring the molded rubber material into a mold, vulcanizing for 5min at 170 deg.C under 190Kgf/cm2The O-shaped sealing ring with the specification of phi 150 multiplied by phi 120 multiplied by 15 is manufactured.
(4) Trimming, inspecting, packaging and warehousing.
Example 2:
mixing and stirring polypropylene, mica and magnesium sulfate whisker in a high-speed stirrer, wherein the mass proportion of the mica to the magnesium sulfate whisker is 2:1, and stirring for 8min at 90 ℃ to obtain the modified polypropylene.
And (3) placing the butyl rubber and trichloroacetic acid on an open mill, and mixing for 8min to obtain the modified butyl rubber.
An O-shaped sealing ring comprises the following raw materials in parts by weight: modified polypropylene: 25 parts of modified butyl rubber: 27 parts of natural rubber, 10 parts of zinc oxide, 6 parts of calcium stearate, 7 parts of morpholine disulfide, 4 parts of antioxidant, 10 parts of oxidized polyethylene and 10 parts of talcum powder.
The preparation method of the O-shaped sealing ring comprises the following steps:
(1) according to the weight portion, the modified butyl rubber, the modified polypropylene and the natural rubber are heated and dissolved, stirred and mixed, and banburying is carried out for 20min at 80 ℃ on an open mill.
(2) Respectively blanking zinc oxide, calcium stearate, morpholine disulfide, an antioxidant, oxidized polyethylene and talcum powder at high temperature according to the weight part ratio, mixing for 15min, and forming;
(3) pouring the molded rubber material into a mold, vulcanizing for 5-8min at 180 deg.C under 170Kgf/cm2The O-shaped sealing ring with the specifications of phi 150 multiplied by phi 120 multiplied by 15 is manufactured。
(4) Trimming, inspecting, packaging and warehousing.
Example 3:
mixing polypropylene, mica and magnesium sulfate whisker in a high-speed stirrer, wherein the mass proportion of the mica to the magnesium sulfate whisker is 2:1, and stirring for 10min at 85 ℃ to obtain the modified polypropylene.
And (3) placing the butyl rubber and trichloroacetic acid on an open mill, and mixing for 9min to obtain the modified butyl rubber.
An O-shaped sealing ring comprises the following raw materials in parts by weight: modified polypropylene: 20 parts of modified butyl rubber, 25 parts of modified butyl rubber, 12 parts of natural rubber, 7 parts of zinc oxide, 8 parts of stearic acid, 7 parts of morpholine disulfide, 5 parts of antioxidant, 7 parts of oxidized polyethylene and 7 parts of talcum powder.
The preparation method of the O-shaped sealing ring comprises the following steps:
(1) according to the weight portion, the modified butyl rubber, the modified polypropylene and the natural rubber are heated and dissolved, stirred and mixed, and are internally mixed for 18min at 90 ℃ on an open mill.
(2) Respectively blanking zinc oxide, calcium stearate, morpholine disulfide, an antioxidant, oxidized polyethylene and talcum powder at high temperature according to the weight part ratio, mixing for 12min, and forming;
(3) pouring the molded rubber material into a mold, vulcanizing for 7min at 177 deg.C under 180Kgf/cm2The O-shaped sealing ring with the specification of phi 150 multiplied by phi 120 multiplied by 15 is manufactured.
(4) Trimming, inspecting, packaging and warehousing.
Example 4:
mixing and stirring polypropylene, mica and magnesium sulfate whisker in a high-speed stirrer, wherein the mass proportion of the mica to the magnesium sulfate whisker is 2:1, and stirring for 12min at 88 ℃ to obtain the modified polypropylene.
And (3) placing the butyl rubber and trichloroacetic acid on an open mill, and mixing for 14min to obtain the modified butyl rubber.
An O-shaped sealing ring comprises the following raw materials in parts by weight: modified polypropylene: 22 parts of modified butyl rubber: 23 parts of natural rubber, 14 parts of zinc oxide, 7 parts of stearic acid, 6 parts of morpholine disulfide, 6 parts of an antioxidant, 8 parts of oxidized polyethylene and 8 parts of talcum powder.
The preparation method of the O-shaped sealing ring comprises the following steps:
(1) according to the weight portion, the modified butyl rubber, the modified polypropylene and the natural rubber are heated and dissolved, stirred and mixed, and are internally mixed for 16min at 100 ℃ on an open mill.
(2) Respectively blanking zinc oxide, calcium stearate, morpholine disulfide, an antioxidant, oxidized polyethylene and talcum powder at high temperature according to the weight part ratio, mixing for 11min, and forming;
(3) pouring the molded rubber material into a mold, vulcanizing for 5-8min at 172 deg.C under 185Kgf/cm2The O-shaped sealing ring with the specification of phi 150 multiplied by phi 120 multiplied by 15 is manufactured.
(4) Trimming, inspecting, packaging and warehousing.
Example 5:
mixing and stirring polypropylene, mica and magnesium sulfate whisker in a high-speed stirrer at the mass ratio of 2:1 for 14min at 88 ℃ to obtain the modified polypropylene.
And (3) placing the butyl rubber and trichloroacetic acid on an open mill, and mixing for 11min to obtain the modified butyl rubber.
An O-shaped sealing ring comprises the following raw materials in parts by weight: modified polypropylene: 21 parts of modified butyl rubber: 24 parts of natural rubber, 13 parts of zinc oxide, 7 parts of stearic acid, 7 parts of morpholine disulfide, 5 parts of antioxidant, 7 parts of oxidized polyethylene and 7 parts of talcum powder.
The preparation method of the O-shaped sealing ring comprises the following steps:
(1) according to the weight portion, the modified butyl rubber, the modified polypropylene and the natural rubber are heated and dissolved, stirred and mixed, and are banburied for 19min at 100 ℃ on an open mill.
(2) Respectively blanking zinc oxide, calcium stearate, morpholine disulfide, an antioxidant, oxidized polyethylene and talcum powder at high temperature according to the weight part ratio, mixing for 12min, and forming;
(3) pouring the molded rubber material into a mold, vulcanizing at 177 deg.C for 7min, and pressurizing to 174Kgf/cm2The O-shaped sealing ring with the specification of phi 150 multiplied by phi 120 multiplied by 15 is manufactured.
(4) Trimming, inspecting, packaging and warehousing.
To further illustrate the beneficial effects of the present invention, the O-ring prepared in the embodiments 1 to 5 of the present invention was selected to perform the test experiments on the mechanical properties, and meanwhile, the common O-ring in the prior art was selected as the comparison item 1, wherein the compression set test is performed by placing the material into a fixture after recording the original height of the material, selecting different compression ratios according to the hardness of the sample to uniformly fasten the fixture, so that the sample was compressed to a predetermined height, taking out the sample after being compressed at 90 ℃ for 30d, placing the sample in a natural state, calculating the height reduction ratio, and recording the experimental results in the following table.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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, the inclusion of an element by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes and modifications may be made, and equivalents may be substituted for elements thereof without departing from the scope of the present invention; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (4)
1. The O-shaped sealing ring is characterized by comprising the following raw materials in parts by weight: 18-25 parts of modified polypropylene, 20-27 parts of modified butyl rubber, 10-15 parts of natural rubber, 5-8 parts of zinc oxide, 6-9 parts of calcium stearate, 5-7 parts of morpholine disulfide, 4-7 parts of antioxidant, 5-10 parts of oxidized polyethylene and 5-10 parts of talcum powder;
the modified polypropylene is prepared by mixing and stirring polypropylene, mica and magnesium sulfate whiskers in a high-speed stirrer at 80-90 ℃ for 8-15min, wherein the mass proportion of the mica to the magnesium sulfate whiskers is 2: 1;
the modified butyl rubber is obtained by placing butyl rubber and trichloroacetic acid on an open mill and mixing for 8-15 min;
the preparation method of the O-shaped sealing ring comprises the following steps:
(1) heating and melting the modified butyl rubber, the modified polypropylene and the natural rubber according to the weight part ratio, stirring and mixing, and banburying for 15-20min on an open mill at 80-110 ℃;
(2) respectively blanking zinc oxide, calcium stearate, morpholine disulfide, an antioxidant, oxidized polyethylene and talcum powder at high temperature according to the weight part ratio, mixing for 10-15min, and forming;
(3) pouring the formed rubber material into a mold, carrying out vulcanization treatment for 5-8min, controlling the temperature at 170-2；
(4) Trimming, inspecting, packaging and warehousing.
2. The O-shaped sealing ring according to claim 1, which comprises the following raw materials in parts by weight: modified polypropylene: 20-22 parts of modified butyl rubber: 23-25 parts of natural rubber, 12-14 parts of zinc oxide, 7-8 parts of calcium stearate, 6-7 parts of morpholine disulfide, 5-6 parts of antioxidant, 7-8 parts of oxidized polyethylene and 7-8 parts of talcum powder.
3. The O-shaped sealing ring according to claim 1, which comprises the following raw materials in parts by weight: modified polypropylene: 21 parts of modified butyl rubber: 24 parts of natural rubber, 13 parts of zinc oxide, 7 parts of calcium stearate, 7 parts of morpholine disulfide, 5 parts of antioxidant, 7 parts of oxidized polyethylene and 7 parts of talcum powder.
4. An O-ring seal according to claim 1, wherein the O-ring has a gauge of 150mm x 120mm x 15 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810909224.2A CN109161107B (en) | 2018-08-10 | 2018-08-10 | O-shaped sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810909224.2A CN109161107B (en) | 2018-08-10 | 2018-08-10 | O-shaped sealing ring |
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| Publication Number | Publication Date |
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| CN109161107A CN109161107A (en) | 2019-01-08 |
| CN109161107B true CN109161107B (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810909224.2A Active CN109161107B (en) | 2018-08-10 | 2018-08-10 | O-shaped sealing ring |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1182769A (en) * | 1969-02-07 | 1970-03-04 | Hepworth Iron Co Ltd | Improvements in or relating to Pipe Couplings |
| CN101323774A (en) * | 2008-07-28 | 2008-12-17 | 公安部四川消防研究所 | Expansion type fireproofing glue strip for construction |
| CN106715633A (en) * | 2014-10-01 | 2017-05-24 | 科德宝两合公司 | Sealing body for dynamic applications |
-
2018
- 2018-08-10 CN CN201810909224.2A patent/CN109161107B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1182769A (en) * | 1969-02-07 | 1970-03-04 | Hepworth Iron Co Ltd | Improvements in or relating to Pipe Couplings |
| CN101323774A (en) * | 2008-07-28 | 2008-12-17 | 公安部四川消防研究所 | Expansion type fireproofing glue strip for construction |
| CN106715633A (en) * | 2014-10-01 | 2017-05-24 | 科德宝两合公司 | Sealing body for dynamic applications |
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| CN109161107A (en) | 2019-01-08 |
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