CN110819049A - Preparation method of high-strength AEM and FKM combined sizing material - Google Patents
Preparation method of high-strength AEM and FKM combined sizing material Download PDFInfo
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- CN110819049A CN110819049A CN201911170533.3A CN201911170533A CN110819049A CN 110819049 A CN110819049 A CN 110819049A CN 201911170533 A CN201911170533 A CN 201911170533A CN 110819049 A CN110819049 A CN 110819049A
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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
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/08—Homopolymers or copolymers of acrylic acid esters
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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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Abstract
The invention discloses a preparation method of a high-strength AEM and FKM combined sizing material, and particularly relates to the field of sizing material production, wherein the high-strength AEM and FKM combined sizing material comprises the following raw materials in parts by weight: 80-120 parts of acrylate rubber, 16-24 parts of fluororubber, 3-8 parts of carbon black, 1.5-4 parts of white carbon black, 8-12 parts of silane coupling agent and 0.5-3 parts of anti-aging agent, and the concrete processing steps are as follows: kneading, mixing and tabletting. According to the invention, the fluororubber, the carbon black, the white carbon black, the silane coupling agent and the anti-aging agent are added into the acrylate rubber as a main body, the abrasion resistance and the tearing strength of the rubber surface of the rubber material prepared by the method are improved to a certain extent compared with AEM, so that a high-strength rubber material is obtained, and the cost reduced by adding the FKM composite material in the preparation process is calculated according to the market value under normal conditions, so that the cost can be saved by 15% when the FKM material prepared by using about 20% of the mass of AEM is used compared with the same amount of the rubber material prepared by using only AEM.
Description
Technical Field
The invention relates to the technical field of rubber production, in particular to a preparation method of a rubber material with high strength of AEM and FKM.
Background
Acrylate rubber (AEM) is an elastomer obtained by copolymerizing acrylate serving as a main monomer, wherein the main chain of the elastomer is a saturated carbon chain, and a side group of the elastomer is a polar ester group. Due to the special structure, the rubber has many excellent characteristics such as heat resistance, aging resistance, oil resistance, ozone resistance, ultraviolet resistance and the like, the mechanical property and the processing property are superior to those of fluororubber and silicone rubber, and the heat resistance, the aging resistance and the oil resistance are superior to those of nitrile rubber. AEM is widely applied to various high-temperature and oil-resistant environments, becomes a sealing material which is intensively developed and popularized in the automobile industry in recent years, is particularly used for high-temperature-resistant oil seals, crankshafts, valve rods, cylinder gaskets, hydraulic oil conveying pipes and the like of automobiles, and almost all domestic requirements depend on import at present; FKM is the abbreviation of fluororubber, fluororubber is a special synthetic elastomer, the carbon atom on the main chain or the side chain is connected with fluorine atom with strong electronegativity, because the C-F bond energy is large (485KJ/mol), and the covalent radius of the fluorine atom is 0.64A, which is equal to half of the length of the C-C bond, therefore, the fluorine atom can shield the C-C main chain well, the stability of the C-C chain is ensured, and the fluororubber has the excellent performances which are incomparable with other rubbers, such as oil resistance, chemical resistance, good physical mechanical properties, weather resistance, electrical insulation, radiation resistance and the like, and the comprehensive performance is best in all synthetic rubbers, commonly called as "rubber king".
Because the unit price of AEM is higher than that of fluororubber, and the fluororubber cannot meet the requirements of manufacturers on blow molding and other properties of AEM, how to reduce the economic cost of raw materials on the premise of ensuring the AEM properties becomes a problem to be solved urgently.
Disclosure of Invention
To overcome the above-described deficiencies of the prior art, embodiments of the present invention provide a method of making a high strength AEM and FKM blend stock that can save up to 15% of the cost of the same amount of AEM alone compared to a blend stock made using only AEM, at a cost reduced by adding FKM to the composite material during the manufacturing process, normally calculated according to market value, and using about 20% of the mass of AEM.
In order to achieve the purpose, the invention provides the following technical scheme: a high-strength AEM and FKM combined rubber material comprises the following raw materials in parts by weight: 80-120 parts of acrylate rubber, 16-24 parts of fluororubber, 3-8 parts of carbon black, 1.5-4 parts of white carbon black, 8-12 parts of silane coupling agent and 0.5-3 parts of anti-aging agent.
In a preferred embodiment, the fluororubber comprises fluorocarbon rubber, fluorosilicone rubber and fluorinated phosphazene rubber, and the weight ratio of the fluorocarbon rubber, fluorosilicone rubber and fluorinated phosphazene rubber is 3-4: 1: 1-1.5.
In a preferred embodiment, the weight ratio between the acrylate rubber and the fluororubber is 4.5-5.5: 1.
In a preferred embodiment, the silane coupling agent is provided as YSiX3。
In a preferred embodiment, the raw materials used therein comprise the following parts by weight: 80 parts of acrylate rubber, 16 parts of fluororubber, 8 parts of carbon black, 4 parts of white carbon black, 12 parts of silane coupling agent and 3 parts of anti-aging agent.
In a preferred embodiment, the raw materials used therein comprise the following parts by weight: 100 parts of acrylate rubber, 20 parts of fluororubber, 5 parts of carbon black, 3 parts of white carbon black, 10 parts of silane coupling agent and 1.5 parts of anti-aging agent.
In a preferred embodiment, the raw materials used therein comprise the following parts by weight: 120 parts of acrylate rubber, 24 parts of fluororubber, 3 parts of carbon black, 1.5 parts of white carbon black, 8 parts of silane coupling agent and 0.5 part of anti-aging agent.
The invention also comprises a preparation method of the high-strength AEM and FKM combined sizing material, which comprises the following specific processing steps:
a) and (3) plastic refining: putting the acrylate rubber and the fluororubber into an open mill according to the formula amount, and uniformly mixing at a high temperature environment to obtain slurry;
b) mixing: adding carbon black, white carbon black, a silane coupling agent and an anti-aging agent into the slurry obtained in the step a) according to the formula amount, and banburying, and uniformly mixing to obtain a blended rubber material;
c) tabletting and forming: cooling the combined rubber obtained in step b) to below 100 ℃, tabletting and forming by a tabletting machine, and then cooling to room temperature.
In a preferred embodiment, the high temperature in the step a) is set to be 140-160 ℃, and the plastication time is set to be 8-12 min.
The invention has the technical effects and advantages that:
according to the invention, the fluororubber, the carbon black, the white carbon black, the silane coupling agent and the anti-aging agent are added into the acrylate rubber as a main body, the abrasion resistance and the tearing strength of the rubber surface of the rubber material prepared by the method are improved to a certain extent compared with AEM, so that a high-strength rubber material is obtained, and the cost reduced by adding the FKM composite material in the preparation process is calculated according to the market value under normal conditions, so that the cost can be saved by 15% when the FKM material prepared by using about 20% of the mass of AEM is used compared with the same amount of the rubber material prepared by using only AEM.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the 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:
the invention provides a combination of high-strength AEM and FKMThe rubber material comprises the following raw materials in parts by weight: 80-120 parts of acrylate rubber, 16-24 parts of fluororubber, 3-8 parts of carbon black, 1.5-4 parts of white carbon black, 8-12 parts of silane coupling agent and 0.5-3 parts of anti-aging agent, wherein the fluororubber comprises fluorocarbon rubber, fluorosilicone rubber and fluorinated phosphazene rubber, and the weight ratio of the fluorocarbon rubber, fluorosilicone rubber and fluorinated phosphazene rubber is 3-4: 1: 1-1.5, because the fluororubber micropowder has unique particle morphology and surface activity, the fluororubber micropowder can interact with a polymer matrix in the compound, so that the compound has excellent mechanical properties, and the economic cost of the material is obviously reduced, wherein the weight ratio of the acrylate rubber to the fluororubber is 4.5-5.5:1, and the silane coupling agent is set to YSiX3The molecular structural formula of the silane coupling agent is generally Y-R-Si (OR)3 (Y-organic functional group, SiOR-siloxy), the siloxy has reactivity to inorganic matters, and the organic functional group has reactivity or compatibility to organic matters, so that when the silane coupling agent is between an inorganic interface and an organic interface, a bonding layer of an organic matrix-the silane coupling agent-an inorganic matrix can be formed, and the silane tackifier has special functions in the aspect of bonding rubber added with the silane coupling agent with other materials, and obviously improves the bonding strength of various rubbers and other materials;
specifically, in this embodiment, the raw materials used include the following parts by weight: 80 parts of acrylate rubber, 16 parts of fluororubber, 8 parts of carbon black, 4 parts of white carbon black, 12 parts of silane coupling agent and 3 parts of anti-aging agent;
the invention also comprises a preparation method of the high-strength AEM and FKM combined sizing material, which comprises the following specific processing steps:
a) and (3) plastic refining: putting the acrylate rubber and the fluororubber into an open mill according to the formula amount, and performing plastic refining at the temperature of 140-160 ℃ for 8-12min to obtain slurry, wherein the required plasticity can be achieved in a short time under the action of high temperature and strong mechanical action due to severe oxidation;
b) mixing: adding carbon black, white carbon black, a silane coupling agent and an anti-aging agent into the slurry obtained in the step a) according to the formula amount for banburying, mixing uniformly to obtain a combined sizing material, wherein light can age a rubber product, especially ultraviolet rays in sunlight can accelerate the aging of the rubber product, the service life of the rubber product can be prolonged by using an organic ultraviolet absorber and an antioxidant in a matching way, however, the pigment black is still considered as the best ultraviolet stabilizer, the pigment black is used as the ultraviolet absorber and mainly used for prolonging the service life of the rubber product outdoors, the added carbon black has almost the same light protection effect, the white carbon black is used for reinforcing the colored rubber product to replace the carbon black, the requirements of white or semitransparent products are met, the white carbon black has super-strong adhesion, tear resistance and heat resistance simultaneously, the aging resistance and wear resistance of the formed sizing material are ensured, and the carbon black and the white carbon black are used as a filling body of the sizing material, higher tearing strength can be obtained;
c) tabletting and forming: cooling the combined rubber obtained in step b) to below 100 ℃, tabletting and forming by a tabletting machine, and then cooling to room temperature.
Example 2:
the invention provides a high-strength AEM and FKM combined sizing material, which comprises the following raw materials in parts by weight: 80-120 parts of acrylate rubber, 16-24 parts of fluororubber, 3-8 parts of carbon black, 1.5-4 parts of white carbon black, 8-12 parts of silane coupling agent and 0.5-3 parts of anti-aging agent, wherein the fluororubber comprises fluorocarbon rubber, fluorosilicone rubber and fluorinated phosphazene rubber, and the weight ratio of the fluorocarbon rubber, fluorosilicone rubber and fluorinated phosphazene rubber is 3-4: 1: 1-1.5, because the fluororubber micropowder has unique particle morphology and surface activity, the fluororubber micropowder can interact with a polymer matrix in the compound, so that the compound has excellent mechanical properties, and the economic cost of the material is obviously reduced, wherein the weight ratio of the acrylate rubber to the fluororubber is 4.5-5.5:1, and the silane coupling agent is set to YSiX3The molecular structural formula of the silane coupling agent is generally Y-R-Si (OR)3 (in the formula, Y is an organic functional group, SiOR is a siloxy group), the siloxy group has reactivity with inorganic substances, and the organic functional group has reactivity or compatibility with organic substances, so that when the silane coupling agent is between an inorganic interface and an organic interface, a bonding layer of an organic matrix-the silane coupling agent-an inorganic matrix can be formed, and the silicon coupling agent is added to the rubber for bonding with other materialsThe alkyl tackifier has special function, and obviously improves the bonding strength of various rubbers and other materials;
specifically, in this embodiment, the raw materials used include the following parts by weight: 100 parts of acrylate rubber, 20 parts of fluororubber, 5 parts of carbon black, 3 parts of white carbon black, 10 parts of silane coupling agent and 1.5 parts of anti-aging agent;
the invention also comprises a preparation method of the high-strength AEM and FKM combined sizing material, which comprises the following specific processing steps:
a) and (3) plastic refining: putting the acrylate rubber and the fluororubber into an open mill according to the formula amount, and performing plastic refining at the temperature of 140-160 ℃ for 8-12min to obtain slurry, wherein the required plasticity can be achieved in a short time under the action of high temperature and strong mechanical action due to severe oxidation;
b) mixing: adding carbon black, white carbon black, a silane coupling agent and an anti-aging agent into the slurry obtained in the step a) according to the formula amount for banburying, mixing uniformly to obtain a combined sizing material, wherein light can age a rubber product, especially ultraviolet rays in sunlight can accelerate the aging of the rubber product, the service life of the rubber product can be prolonged by using an organic ultraviolet absorber and an antioxidant in a matching way, however, the pigment black is still considered as the best ultraviolet stabilizer, the pigment black is used as the ultraviolet absorber and mainly used for prolonging the service life of the rubber product outdoors, the added carbon black has almost the same light protection effect, the white carbon black is used for reinforcing the colored rubber product to replace the carbon black, the requirements of white or semitransparent products are met, the white carbon black has super-strong adhesion, tear resistance and heat resistance simultaneously, the aging resistance and wear resistance of the formed sizing material are ensured, and the carbon black and the white carbon black are used as a filling body of the sizing material, higher tearing strength can be obtained;
c) tabletting and forming: cooling the combined rubber obtained in step b) to below 100 ℃, tabletting and forming by a tabletting machine, and then cooling to room temperature.
Example 3:
the invention provides a high-strength AEM and FKM combined sizing material, which comprises the following raw materials in parts by weight: 80-120 parts of acrylate rubber, 16-24 parts of fluororubber, 3-8 parts of carbon black and white1.5-4 parts of carbon black, 8-12 parts of a silane coupling agent and 0.5-3 parts of an anti-aging agent, wherein the fluororubber comprises fluorocarbon rubber, fluorosilicone rubber and fluorinated phosphazene rubber, and the weight ratio of the fluorocarbon rubber, the fluorosilicone rubber and the fluorinated phosphazene rubber is 3-4: 1: 1-1.5, because the fluororubber micropowder has unique particle morphology and surface activity, the fluororubber micropowder can interact with a polymer matrix in the compound, so that the compound has excellent mechanical properties, and the economic cost of the material is obviously reduced, wherein the weight ratio of the acrylate rubber to the fluororubber is 4.5-5.5:1, and the silane coupling agent is set to YSiX3The molecular structural formula of the silane coupling agent is generally Y-R-Si (OR)3 (Y-organic functional group, SiOR-siloxy), the siloxy has reactivity to inorganic matters, and the organic functional group has reactivity or compatibility to organic matters, so that when the silane coupling agent is between an inorganic interface and an organic interface, a bonding layer of an organic matrix-the silane coupling agent-an inorganic matrix can be formed, and the silane tackifier has special functions in the aspect of bonding rubber added with the silane coupling agent with other materials, and obviously improves the bonding strength of various rubbers and other materials;
specifically, in this embodiment, the raw materials used include the following parts by weight: 120 parts of acrylate rubber, 24 parts of fluororubber, 3 parts of carbon black, 1.5 parts of white carbon black, 8 parts of silane coupling agent and 0.5 part of anti-aging agent;
the invention also comprises a preparation method of the high-strength AEM and FKM combined sizing material, which comprises the following specific processing steps:
a) and (3) plastic refining: putting the acrylate rubber and the fluororubber into an open mill according to the formula amount, and performing plastic refining at the temperature of 140-160 ℃ for 8-12min to obtain slurry, wherein the required plasticity can be achieved in a short time under the action of high temperature and strong mechanical action due to severe oxidation;
b) mixing: adding carbon black, white carbon black, a silane coupling agent and an anti-aging agent into the slurry obtained in the step a) according to the formula amount for banburying, mixing uniformly to obtain a combined sizing material, wherein light can age a rubber product, especially ultraviolet rays in sunlight can accelerate the aging of the rubber product, the service life of the rubber product can be prolonged by using an organic ultraviolet absorber and an antioxidant in a matching way, however, the pigment black is still considered as the best ultraviolet stabilizer, the pigment black is used as the ultraviolet absorber and mainly used for prolonging the service life of the rubber product outdoors, the added carbon black has almost the same light protection effect, the white carbon black is used for reinforcing the colored rubber product to replace the carbon black, the requirements of white or semitransparent products are met, the white carbon black has super-strong adhesion, tear resistance and heat resistance simultaneously, the aging resistance and wear resistance of the formed sizing material are ensured, and the carbon black and the white carbon black are used as a filling body of the sizing material, higher tearing strength can be obtained;
c) tabletting and forming: cooling the combined rubber obtained in step b) to below 100 ℃, tabletting and forming by a tabletting machine, and then cooling to room temperature.
Example 4:
the rubber materials prepared in the above examples 1 to 3 were respectively taken, and the surface performance test was performed in three groups, to obtain the following data:
as can be seen from the above table, the compounding ratio of the raw materials in example 2 is moderate, the abrasion resistance and the tearing strength of the rubber surface of the rubber material prepared by the method are improved to a certain extent compared with AEM, and a high-strength rubber material is obtained, and the cost reduced by adding the FKM composite material in the preparation process is calculated according to the market value under normal conditions, and the cost can be saved by up to 15% by using a rubber material prepared by using FKM with the mass of about 20% of AEM compared with a rubber material prepared by using only AEM with the same amount.
And finally: 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 are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (9)
1. A high-strength AEM and FKM combined sizing material is characterized in that: the raw materials used in the method comprise the following components in parts by weight: 80-120 parts of acrylate rubber, 16-24 parts of fluororubber, 3-8 parts of carbon black, 1.5-4 parts of white carbon black, 8-12 parts of silane coupling agent and 0.5-3 parts of anti-aging agent.
2. The combination high strength AEM and FKM compound of claim 1, wherein: the fluororubber comprises fluorocarbon rubber, fluorosilicone rubber and fluorinated phosphazene rubber, and the weight ratio of the fluorocarbon rubber, the fluorosilicone rubber and the fluorinated phosphazene rubber is 3-4: 1: 1-1.5.
3. The combination high strength AEM and FKM compound of claim 1, wherein: the weight ratio of the acrylate rubber to the fluororubber is 4.5-5.5: 1.
4. The combination high strength AEM and FKM compound of claim 1, wherein: the silane coupling agent is set to YSiX3。
5. The combination high strength AEM and FKM compound of claim 1, wherein: the raw materials used in the method comprise the following components in parts by weight: 80 parts of acrylate rubber, 16 parts of fluororubber, 8 parts of carbon black, 4 parts of white carbon black, 12 parts of silane coupling agent and 3 parts of anti-aging agent.
6. The combination high strength AEM and FKM compound of claim 1, wherein: the raw materials used in the method comprise the following components in parts by weight: 100 parts of acrylate rubber, 20 parts of fluororubber, 5 parts of carbon black, 3 parts of white carbon black, 10 parts of silane coupling agent and 1.5 parts of anti-aging agent.
7. The combination high strength AEM and FKM compound of claim 1, wherein: the raw materials used in the method comprise the following components in parts by weight: 120 parts of acrylate rubber, 24 parts of fluororubber, 3 parts of carbon black, 1.5 parts of white carbon black, 8 parts of silane coupling agent and 0.5 part of anti-aging agent.
8. A high strength AEM and FKM combination compound according to any one of claims 1-7, wherein: the preparation method of the rubber material combining high-strength AEM and FKM also comprises the following specific processing steps:
a) and (3) plastic refining: putting the acrylate rubber and the fluororubber into an open mill according to the formula amount, and uniformly mixing at a high temperature environment to obtain slurry;
b) mixing: adding carbon black, white carbon black, a silane coupling agent and an anti-aging agent into the slurry obtained in the step a) according to the formula amount, and banburying, and uniformly mixing to obtain a blended rubber material;
c) tabletting and forming: cooling the combined rubber obtained in step b) to below 100 ℃, tabletting and forming by a tabletting machine, and then cooling to room temperature.
9. The method for preparing a high strength AEM and FKM blended rubber compound according to claim 8, wherein: the high temperature in the step a) is set to be 140-160 ℃, and the plastic refining time is set to be 8-12 min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115895145A (en) * | 2022-11-29 | 2023-04-04 | 芜湖集拓橡胶技术有限公司 | Low-pollution and fuel-resistant oil filler sheath formula |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115895145A (en) * | 2022-11-29 | 2023-04-04 | 芜湖集拓橡胶技术有限公司 | Low-pollution and fuel-resistant oil filler sheath formula |
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