CN112321917A - Formula of nitrile rubber wear-resistant sealing element - Google Patents
Formula of nitrile rubber wear-resistant sealing element Download PDFInfo
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- CN112321917A CN112321917A CN202011338321.4A CN202011338321A CN112321917A CN 112321917 A CN112321917 A CN 112321917A CN 202011338321 A CN202011338321 A CN 202011338321A CN 112321917 A CN112321917 A CN 112321917A
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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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The invention discloses a formula of a nitrile rubber wear-resistant sealing element, which adopts the technical scheme that: the adhesive comprises a mixture and a bonding agent, wherein the mixture comprises nitrile rubber and epoxy resin, the bonding agent comprises carbon black, a curing agent, a vulcanization accelerator, an aging inhibitor and a cracking inhibitor, and the mixture comprises the following components in parts by weight: 40-60 parts of nitrile rubber and 40-60 parts of epoxy resin, wherein the chemical mixture comprises the following components in parts by mass: 20-40 parts of carbon black, 5-10 parts of curing agent, 10-20 parts of vulcanization accelerator, 5-10 parts of aging inhibitor and 5-10 parts of cracking inhibitor, and further comprises the following preparation steps: s1: cut quantitative nitrile rubber, S2: and (3) stirring the quantitative mixture and the quantitative mixing agent, wherein the mixing ratio of S3: heating the stirred material, and carrying out S4: and (4) cooling the heating material, and S5: the cooled heating material is put into an extruder, and the invention has the beneficial effects that: the effects of increasing the wear resistance, high temperature resistance and aging resistance of the sealing element.
Description
Technical Field
The invention relates to the field of sealing elements, in particular to a formula of a nitrile rubber wear-resistant sealing element.
Background
The sealing member is a material or a part for preventing fluid or solid particles from leaking from the adjacent joint surfaces and preventing external impurities such as dust, moisture and the like from invading parts inside the machine equipment, and the storage room temperature of the sealing member is preferably below 30 ℃ to avoid high-temperature aging of the sealing member.
The prior art has the following defects: the existing sealing element has poor wear resistance, high temperature resistance and easy aging when in use.
Therefore, the invention is necessary to develop a formula of the nitrile rubber wear-resistant sealing element.
Disclosure of Invention
In order to achieve the above purpose, the invention provides the following technical scheme: the formula of the nitrile rubber wear-resistant sealing element comprises a mixture and a chemical mixture, wherein the mixture comprises nitrile rubber and epoxy resin, and the chemical mixture comprises carbon black, a curing agent, a vulcanization accelerator, an aging inhibitor and a cracking inhibitor;
the mixture comprises the following components in parts by weight: 40-60 parts of nitrile rubber and 40-60 parts of epoxy resin;
the chemical mixture comprises the following components in parts by weight: 20-40 parts of carbon black, 5-10 parts of curing agent, 10-20 parts of vulcanization accelerator, 5-10 parts of aging inhibitor and 5-10 parts of cracking inhibitor;
preferably, the method also comprises a processing method, and specifically comprises the following preparation steps:
s1: cutting off a certain amount of nitrile rubber;
s2: stirring a quantitative mixture and a quantitative chemical mixture;
s3: heating the stirred material;
s4: placing the heating material for cooling;
s5: placing the cooled heated material into an extruder;
s6: placing the extruded rubber material in a mold;
s7: pressurizing the rubber material in the mold;
s8: placing the pressurized rubber material for cooling;
s9: cooling and solidifying the cooled rubber material;
s10: putting the cured rubber material into a vulcanizing machine for vulcanization;
s11: and taking out the rubber material to obtain the nitrile rubber wear-resistant sealing element.
Preferably, in S1, the nitrile rubber is cut into pieces by a cutter.
Preferably, in S2, a predetermined amount of the mixture and a predetermined amount of the compounding agent are put into a mixer to be mixed and crushed.
Preferably, in S3, the mixture is put into a heating furnace for heating.
Preferably, the cooling temperature in the S4 is controlled to be 10-40 ℃.
Preferably, in S7, the rubber material is pressurized by a press machine to form an embryonic form.
Preferably, the standing and cooling time in S8 is controlled to be 5 to 10 minutes.
Preferably, in S9, liquid nitrogen is used for cooling and solidification.
Compared with the prior art, the nitrile rubber wear-resistant sealing element has the advantages that:
according to the invention, the nitrile rubber and the epoxy resin are mixed, the carbon black, the aging inhibitor and the crack inhibitor are added into the mixture of the nitrile rubber and the epoxy resin, the mixture is fully mixed and plasticized, and then the sealing element is molded through vulcanization, so that the effects of increasing the wear resistance, the high temperature resistance and the aging resistance of the sealing element are achieved.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is in no way intended to limit the invention.
The formula of the nitrile rubber wear-resistant sealing element comprises a mixture and a chemical mixture, wherein the mixture comprises nitrile rubber and epoxy resin, and the chemical mixture comprises carbon black, a curing agent, a vulcanization accelerator, an aging inhibitor and a cracking inhibitor;
the mixture comprises the following components in parts by weight: 40 parts of nitrile rubber and 40 parts of epoxy resin;
the chemical mixture comprises the following components in parts by weight: 20 parts of carbon black, 5 parts of curing agent, 10 parts of vulcanization accelerator, 5 parts of aging inhibitor and 5 parts of cracking inhibitor;
the processing method comprises the following specific preparation steps:
s1: putting a certain amount of nitrile rubber into a cutting machine for cutting;
the nitrile rubber is prepared from butadiene and acrylonitrile by an emulsion polymerization method, is mainly produced by a low-temperature emulsion polymerization method, has excellent oil resistance, higher wear resistance, better heat resistance and strong bonding force, and has the defects of poor low-temperature resistance, poor ozone resistance, poor insulating property and slightly low elasticity;
s2: putting a certain amount of the mixture and a certain amount of the chemical mixture into a stirrer for stirring, crushing, mixing and stirring;
the epoxy resin is a high molecular polymer, has a molecular formula of (C11H12O3) n, and is a general name of a polymer containing more than two epoxy groups in a molecule;
carbon black, also known as carbon black, is an amorphous carbon;
curing agents, also known as hardeners, curing agents or setting agents, are substances or mixtures that promote or control the curing reaction;
the vulcanization accelerator is an accelerator for short, can promote substances with vulcanization effect, can shorten vulcanization time, reduce vulcanization temperature, reduce the consumption of a vulcanizing agent, improve the physical and mechanical properties of rubber and the like;
s3: heating the stirred material in a heating furnace;
the furnace model is NWTC16F, and in the metallurgical industry, the furnace is a device that heats a material or a metal workpiece to a rolling forging temperature;
s4: cooling the heating material, and controlling the cooling temperature to be 10 ℃;
s5: placing the cooled heated material into an extruder;
the extruder is MXS65, the extruder belongs to one of the types of plastic machinery, the extruder can divide the machine head into a right-angle machine head, an oblique-angle machine head and the like according to the material flow direction of the machine head and the included angle of the central line of the screw rod, the screw extruder can fully plasticize and uniformly mix materials by means of pressure and shearing force generated by the rotation of the screw rod, and the materials are molded through a neck mold;
s6: placing the extruded rubber material in a mold;
s7: pressurizing the rubber material in the mold, and pressurizing the rubber material by using a pressurizing machine to form a prototype;
the press is a universal press with exquisite structure
S8: the pressurized rubber material is placed and cooled, and the placing and cooling time is controlled to be 5 minutes;
s9: cooling and solidifying the cooled rubber material by using liquid nitrogen;
the liquid nitrogen is liquid nitrogen, is inert, colorless, odorless, non-corrosive, non-combustible and extremely low-temperature liquid, and is frostbite caused by a large amount of heat absorption contact during vaporization;
s10: putting the cured rubber material into a vulcanizing machine for vulcanization;
the model of the vulcanizing machine is XLB-1000, the vulcanizing machine is a machine for vulcanizing various rubber plastics, and has the functions of timing mode locking, automatic pressure supplementing, automatic temperature control, automatic timing, time-out alarm and the like;
s11: and taking out the rubber material to obtain the nitrile rubber wear-resistant sealing element.
Embodiment 2, the formulation of the nitrile rubber wear-resistant sealing element provided by the invention comprises a mixture and a chemical mixture, wherein the mixture comprises nitrile rubber and epoxy resin, and the chemical mixture comprises carbon black, a curing agent, a vulcanization accelerator, an aging inhibitor and a cracking inhibitor;
the mixture comprises the following components in parts by weight: 45 parts of nitrile rubber and 45 parts of epoxy resin;
the chemical mixture comprises the following components in parts by weight: 25 parts of carbon black, 6 parts of curing agent, 15 parts of vulcanization accelerator, 6 parts of aging inhibitor and 6 parts of cracking inhibitor;
the processing method comprises the following specific preparation steps:
s1: putting a certain amount of nitrile rubber into a cutting machine for cutting;
the nitrile rubber is prepared from butadiene and acrylonitrile by an emulsion polymerization method, is mainly produced by a low-temperature emulsion polymerization method, has excellent oil resistance, higher wear resistance, better heat resistance and strong bonding force, and has the defects of poor low-temperature resistance, poor ozone resistance, poor insulating property and slightly low elasticity;
s2: putting a certain amount of the mixture and a certain amount of the chemical mixture into a stirrer for stirring, crushing, mixing and stirring;
the epoxy resin is a high molecular polymer, has a molecular formula of (C11H12O3) n, and is a general name of a polymer containing more than two epoxy groups in a molecule;
carbon black, also known as carbon black, is an amorphous carbon;
curing agents, also known as hardeners, curing agents or setting agents, are substances or mixtures that promote or control the curing reaction;
the vulcanization accelerator is an accelerator for short, can promote substances with vulcanization effect, can shorten vulcanization time, reduce vulcanization temperature, reduce the consumption of a vulcanizing agent, improve the physical and mechanical properties of rubber and the like;
s3: heating the stirred material in a heating furnace;
the furnace model is NWTC16F, and in the metallurgical industry, the furnace is a device that heats a material or a metal workpiece to a rolling forging temperature;
s4: cooling the heating material at 20 deg.c;
s5: placing the cooled heated material into an extruder;
the extruder is MXS65, the extruder belongs to one of the types of plastic machinery, the extruder can divide the machine head into a right-angle machine head, an oblique-angle machine head and the like according to the material flow direction of the machine head and the included angle of the central line of the screw rod, the screw extruder can fully plasticize and uniformly mix materials by means of pressure and shearing force generated by the rotation of the screw rod, and the materials are molded through a neck mold;
s6: placing the extruded rubber material in a mold;
s7: pressurizing the rubber material in the mold, and pressurizing the rubber material by using a pressurizing machine to form a prototype;
the press is a universal press with exquisite structure
S8: the pressurized rubber material is placed and cooled, and the placing and cooling time is controlled to be 6 minutes;
s9: cooling and solidifying the cooled rubber material by using liquid nitrogen;
the liquid nitrogen is liquid nitrogen, is inert, colorless, odorless, non-corrosive, non-combustible and extremely low-temperature liquid, and is frostbite caused by a large amount of heat absorption contact during vaporization;
s10: putting the cured rubber material into a vulcanizing machine for vulcanization;
the model of the vulcanizing machine is XLB-1000, the vulcanizing machine is a machine for vulcanizing various rubber plastics, and has the functions of timing mode locking, automatic pressure supplementing, automatic temperature control, automatic timing, time-out alarm and the like;
s11: and taking out the rubber material to obtain the nitrile rubber wear-resistant sealing element.
Embodiment 3, the formulation of the nitrile rubber wear-resistant sealing element provided by the invention comprises a mixture and a chemical mixture, wherein the mixture comprises nitrile rubber and epoxy resin, and the chemical mixture comprises carbon black, a curing agent, a vulcanization accelerator, an aging inhibitor and a cracking inhibitor;
the mixture comprises the following components in parts by weight: 50 parts of nitrile rubber and 50 parts of epoxy resin;
the chemical mixture comprises the following components in parts by weight: 30 parts of carbon black, 8 parts of curing agent, 18 parts of vulcanization accelerator, 8 parts of aging inhibitor and 8 parts of cracking inhibitor;
the processing method comprises the following specific preparation steps:
s1: putting a certain amount of nitrile rubber into a cutting machine for cutting;
the nitrile rubber is prepared from butadiene and acrylonitrile by an emulsion polymerization method, is mainly produced by a low-temperature emulsion polymerization method, has excellent oil resistance, higher wear resistance, better heat resistance and strong bonding force, and has the defects of poor low-temperature resistance, poor ozone resistance, poor insulating property and slightly low elasticity;
s2: putting a certain amount of the mixture and a certain amount of the chemical mixture into a stirrer for stirring, crushing, mixing and stirring;
the epoxy resin is a high molecular polymer, has a molecular formula of (C11H12O3) n, and is a general name of a polymer containing more than two epoxy groups in a molecule;
carbon black, also known as carbon black, is an amorphous carbon;
curing agents, also known as hardeners, curing agents or setting agents, are substances or mixtures that promote or control the curing reaction;
the vulcanization accelerator is an accelerator for short, can promote substances with vulcanization effect, can shorten vulcanization time, reduce vulcanization temperature, reduce the consumption of a vulcanizing agent, improve the physical and mechanical properties of rubber and the like;
s3: heating the stirred material in a heating furnace;
the furnace model is NWTC16F, and in the metallurgical industry, the furnace is a device that heats a material or a metal workpiece to a rolling forging temperature;
s4: cooling the heating material at 30 deg.c;
s5: placing the cooled heated material into an extruder;
the extruder is MXS65, the extruder belongs to one of the types of plastic machinery, the extruder can divide the machine head into a right-angle machine head, an oblique-angle machine head and the like according to the material flow direction of the machine head and the included angle of the central line of the screw rod, the screw extruder can fully plasticize and uniformly mix materials by means of pressure and shearing force generated by the rotation of the screw rod, and the materials are molded through a neck mold;
s6: placing the extruded rubber material in a mold;
s7: pressurizing the rubber material in the mold, and pressurizing the rubber material by using a pressurizing machine to form a prototype;
the press is a universal press with exquisite structure
S8: the pressurized rubber material is placed and cooled, and the placing and cooling time is controlled to be 8 minutes;
s9: cooling and solidifying the cooled rubber material by using liquid nitrogen;
the liquid nitrogen is liquid nitrogen, is inert, colorless, odorless, non-corrosive, non-combustible and extremely low-temperature liquid, and is frostbite caused by a large amount of heat absorption contact during vaporization;
s10: putting the cured rubber material into a vulcanizing machine for vulcanization;
the model of the vulcanizing machine is XLB-1000, the vulcanizing machine is a machine for vulcanizing various rubber plastics, and has the functions of timing mode locking, automatic pressure supplementing, automatic temperature control, automatic timing, time-out alarm and the like;
s11: and taking out the rubber material to obtain the nitrile rubber wear-resistant sealing element.
Embodiment 4, the formulation of the nitrile rubber wear-resistant sealing element provided by the invention comprises a mixture and a chemical mixture, wherein the mixture comprises nitrile rubber and epoxy resin, and the chemical mixture comprises carbon black, a curing agent, a vulcanization accelerator, an aging inhibitor and a cracking inhibitor;
the mixture comprises the following components in parts by weight: 60 parts of nitrile rubber and 60 parts of epoxy resin;
the chemical mixture comprises the following components in parts by weight: 40 parts of carbon black, 10 parts of curing agent, 20 parts of vulcanization accelerator, 10 parts of aging inhibitor and 10 parts of cracking inhibitor;
the processing method comprises the following specific preparation steps:
s1: putting a certain amount of nitrile rubber into a cutting machine for cutting;
the nitrile rubber is prepared from butadiene and acrylonitrile by an emulsion polymerization method, is mainly produced by a low-temperature emulsion polymerization method, has excellent oil resistance, higher wear resistance, better heat resistance and strong bonding force, and has the defects of poor low-temperature resistance, poor ozone resistance, poor insulating property and slightly low elasticity;
s2: putting a certain amount of the mixture and a certain amount of the chemical mixture into a stirrer for stirring, crushing, mixing and stirring;
the epoxy resin is a high molecular polymer, has a molecular formula of (C11H12O3) n, and is a general name of a polymer containing more than two epoxy groups in a molecule;
carbon black, also known as carbon black, is an amorphous carbon;
curing agents, also known as hardeners, curing agents or setting agents, are substances or mixtures that promote or control the curing reaction;
the vulcanization accelerator is an accelerator for short, can promote substances with vulcanization effect, can shorten vulcanization time, reduce vulcanization temperature, reduce the consumption of a vulcanizing agent, improve the physical and mechanical properties of rubber and the like;
s3: heating the stirred material in a heating furnace;
the furnace model is NWTC16F, and in the metallurgical industry, the furnace is a device that heats a material or a metal workpiece to a rolling forging temperature;
s4: cooling the heating material at 40 deg.c;
s5: placing the cooled heated material into an extruder;
the extruder is MXS65, the extruder belongs to one of the types of plastic machinery, the extruder can divide the machine head into a right-angle machine head, an oblique-angle machine head and the like according to the material flow direction of the machine head and the included angle of the central line of the screw rod, the screw extruder can fully plasticize and uniformly mix materials by means of pressure and shearing force generated by the rotation of the screw rod, and the materials are molded through a neck mold;
s6: placing the extruded rubber material in a mold;
s7: pressurizing the rubber material in the mold, and pressurizing the rubber material by using a pressurizing machine to form a prototype;
the press is a universal press with exquisite structure
S8: the pressurized rubber material is placed and cooled, and the placing and cooling time is controlled to be 10 minutes;
s9: cooling and solidifying the cooled rubber material by using liquid nitrogen;
the liquid nitrogen is liquid nitrogen, is inert, colorless, odorless, non-corrosive, non-combustible and extremely low-temperature liquid, and is frostbite caused by a large amount of heat absorption contact during vaporization;
s10: putting the cured rubber material into a vulcanizing machine for vulcanization;
the model of the vulcanizing machine is XLB-1000, the vulcanizing machine is a machine for vulcanizing various rubber plastics, and has the functions of timing mode locking, automatic pressure supplementing, automatic temperature control, automatic timing, time-out alarm and the like;
s11: and taking out the rubber material to obtain the nitrile rubber wear-resistant sealing element.
Taking the methods of the above examples 1 to 4, respectively, 50 parts of the nitrile rubber wear-resistant sealing member was manufactured by each method, and the wear resistance, the high temperature resistance and the aging resistance of each nitrile rubber wear-resistant sealing member were detected, so as to obtain the following data:
as can be seen from the above table, the method in embodiment 3 is suitable, after the nitrile rubber wear-resistant sealing element is prepared, the nitrile rubber wear-resistant sealing element has good wear resistance, good high temperature resistance and good aging resistance, the nitrile rubber and the epoxy resin are mixed, the carbon black, the aging-resistant agent and the crack-resistant agent are added into the mixture of the nitrile rubber and the epoxy resin, the mixture is fully mixed and plasticized, and then the sealing element is molded through vulcanization, so that the effects of increasing the wear resistance, the high temperature resistance and the aging resistance of the sealing element are achieved.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.
Claims (9)
1. The formula of the nitrile rubber wear-resistant sealing element is characterized in that: the composite material comprises a mixture and a chemical mixture, wherein the mixture comprises nitrile rubber and epoxy resin, and the chemical mixture comprises carbon black, a curing agent, a vulcanization accelerator, an aging inhibitor and a cracking inhibitor;
the mixture comprises the following components in parts by weight: 40-60 parts of nitrile rubber and 40-60 parts of epoxy resin;
the chemical mixture comprises the following components in parts by weight: 20-40 parts of carbon black, 5-10 parts of curing agent, 10-20 parts of vulcanization accelerator, 5-10 parts of aging inhibitor and 5-10 parts of cracking inhibitor.
2. The formulation of claim 1, wherein the formulation comprises: the processing method comprises the following specific preparation steps:
s1: cutting off a certain amount of nitrile rubber;
s2: stirring a quantitative mixture and a quantitative chemical mixture;
s3: heating the stirred material;
s4: placing the heating material for cooling;
s5: placing the cooled heated material into an extruder;
s6: placing the extruded rubber material in a mold;
s7: pressurizing the rubber material in the mold;
s8: placing the pressurized rubber material for cooling;
s9: cooling and solidifying the cooled rubber material;
s10: putting the cured rubber material into a vulcanizing machine for vulcanization;
s11: and taking out the rubber material to obtain the nitrile rubber wear-resistant sealing element.
3. The formulation of claim 2, wherein the formulation comprises: and in the step S1, the nitrile rubber is put into a cutting machine for cutting.
4. The formulation of claim 2, wherein the formulation comprises: in the step S2, a predetermined amount of the mixture and a predetermined amount of the compounding agent are put into a mixer and mixed by kneading.
5. The formulation of claim 2, wherein the formulation comprises: and S3, putting the mixture into a heating furnace for heating.
6. The formulation of claim 2, wherein the formulation comprises: and the cooling temperature in the S4 is controlled to be 10-40 ℃.
7. The formulation of claim 2, wherein the formulation comprises: in S7, the rubber material is pressurized by a press machine to form an embryonic form.
8. The formulation of claim 2, wherein the formulation comprises: the standing and cooling time in the S8 is controlled to be 5-10 minutes.
9. The formulation of claim 2, wherein the formulation comprises: and in the S9, liquid nitrogen is used for cooling and solidifying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011338321.4A CN112321917A (en) | 2020-11-25 | 2020-11-25 | Formula of nitrile rubber wear-resistant sealing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011338321.4A CN112321917A (en) | 2020-11-25 | 2020-11-25 | Formula of nitrile rubber wear-resistant sealing element |
Publications (1)
| Publication Number | Publication Date |
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| CN112321917A true CN112321917A (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011338321.4A Withdrawn CN112321917A (en) | 2020-11-25 | 2020-11-25 | Formula of nitrile rubber wear-resistant sealing element |
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| CN (1) | CN112321917A (en) |
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2020
- 2020-11-25 CN CN202011338321.4A patent/CN112321917A/en not_active Withdrawn
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