CN116874962A - Self-lubricating rubber composition and preparation process thereof - Google Patents
Self-lubricating rubber composition and preparation process thereof Download PDFInfo
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- CN116874962A CN116874962A CN202310733546.7A CN202310733546A CN116874962A CN 116874962 A CN116874962 A CN 116874962A CN 202310733546 A CN202310733546 A CN 202310733546A CN 116874962 A CN116874962 A CN 116874962A
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 70
- 239000000203 mixture Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 54
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 35
- 239000006229 carbon black Substances 0.000 claims abstract description 27
- 239000000314 lubricant Substances 0.000 claims abstract description 27
- 239000007800 oxidant agent Substances 0.000 claims abstract description 27
- 230000001590 oxidative effect Effects 0.000 claims abstract description 27
- 239000004014 plasticizer Substances 0.000 claims abstract description 27
- 239000003381 stabilizer Substances 0.000 claims abstract description 27
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 21
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 21
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 21
- 239000011593 sulfur Substances 0.000 claims abstract description 21
- 239000002131 composite material Substances 0.000 claims abstract description 11
- 238000000465 moulding Methods 0.000 claims description 18
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical group [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 12
- 239000006247 magnetic powder Substances 0.000 claims description 12
- 238000004073 vulcanization Methods 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- OTUBAUUGFCVNEL-UHFFFAOYSA-N 3-(2-anilinophenyl)pyrrole-2,5-dione Chemical compound O=C1NC(=O)C(C=2C(=CC=CC=2)NC=2C=CC=CC=2)=C1 OTUBAUUGFCVNEL-UHFFFAOYSA-N 0.000 claims description 6
- KEQFTVQCIQJIQW-UHFFFAOYSA-N N-Phenyl-2-naphthylamine Chemical group C=1C=C2C=CC=CC2=CC=1NC1=CC=CC=C1 KEQFTVQCIQJIQW-UHFFFAOYSA-N 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 6
- 229920000800 acrylic rubber Polymers 0.000 claims description 6
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 229920001778 nylon Polymers 0.000 claims description 6
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical group [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 6
- 229920000058 polyacrylate Polymers 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 6
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 239000011787 zinc oxide Substances 0.000 claims description 6
- 239000003112 inhibitor Substances 0.000 claims description 4
- AMTWCFIAVKBGOD-UHFFFAOYSA-N dioxosilane;methoxy-dimethyl-trimethylsilyloxysilane Chemical group O=[Si]=O.CO[Si](C)(C)O[Si](C)(C)C AMTWCFIAVKBGOD-UHFFFAOYSA-N 0.000 claims description 2
- 229940083037 simethicone Drugs 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000005461 lubrication Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 3
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 4
- 239000000806 elastomer Substances 0.000 description 4
- 229920002545 silicone oil Polymers 0.000 description 4
- 230000002950 deficient Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- C08K2003/221—Oxides; Hydroxides of metals of rare earth metal
- C08K2003/2213—Oxides; Hydroxides of metals of rare earth metal of cerium
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a self-lubricating rubber composition which comprises the following components in parts by weight: 80-95 parts of acrylate rubber, 20-40 parts of carbon black, 5-10 parts of wear-resistant stabilizer, 2-5 parts of plasticizer, 2-5 parts of self-lubricant, 1-3 parts of sulfur, 2-5 parts of oxidant, 3-6 parts of heat-resistant agent and 1-3 parts of anti-aging agent. The acrylate rubber composition material prepared from the acrylate rubber, the carbon black, the wear-resistant stabilizer, the plasticizer, the self-lubricant, the sulfur, the oxidant, the heat-resistant agent and the anti-aging agent has certain breaking strength, and the self-lubrication of the rubber material is realized, so that the lubrication degree of a product is increased.
Description
Technical Field
The invention relates to the technical field of rubber compositions, in particular to a self-lubricating rubber composition and a preparation process thereof.
Background
The acrylate rubber is an elastomer obtained by copolymerizing acrylate serving as a main monomer, wherein the main chain of the elastomer is a saturated carbon chain, the side group of the elastomer is a polar ester group, and the elastomer is endowed with a plurality of excellent characteristics due to a special structure, such as: the heat resistance, aging resistance, oil resistance, ozone resistance, ultraviolet resistance and the like are superior to fluororubber and silicone rubber in mechanical property and processability, and the heat resistance, aging resistance and oil resistance are superior to nitrile rubber; the sealing material is developed and popularized in the automobile industry in recent years, and particularly, high-temperature-resistant oil seals, crankshafts, valve rods, cylinder gaskets, hydraulic oil delivery pipes and the like for automobiles are almost completely imported at present; however, the existing acrylate rubber has poor breaking strength, can not realize self-lubrication of rubber materials well under the condition of lower comprehensive cost, and has limited lubrication degree.
Disclosure of Invention
The invention aims to provide a self-lubricating rubber composition and a preparation process thereof, so as to solve the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the self-lubricating rubber composition comprises the following components in parts by weight:
80-95 parts of acrylate rubber, 20-40 parts of carbon black, 5-10 parts of wear-resistant stabilizer, 2-5 parts of plasticizer, 2-5 parts of self-lubricant, 1-3 parts of sulfur, 2-5 parts of oxidant, 3-6 parts of heat-resistant agent and 1-3 parts of anti-aging agent.
Preferably, the composition comprises the following components in parts by weight:
85-90 parts of acrylate rubber, 20-35 parts of carbon black, 6-9 parts of wear-resistant stabilizer, 2-5 parts of plasticizer, 3-5 parts of self-lubricant, 1-3 parts of sulfur, 3-5 parts of oxidant, 3-5 parts of heat-resistant agent and 1-3 parts of anti-aging agent.
Preferably, the composition comprises the following components in parts by weight:
88 parts of acrylate rubber, 30 parts of carbon black, 8 parts of wear-resistant stabilizer, 4 parts of plasticizer, 3 parts of self-lubricant, 2 parts of sulfur, 4 parts of oxidant, 5 parts of heat-resistant agent and 2 parts of anti-aging agent.
4. A self-lubricating rubber composition according to claim 1, wherein the wear-resistant stabilizer comprises the following components in mass ratio: the mass ratio of the graphite powder to the silicon carbide to the nylon short fiber powder is 4-6:2-4:3:6.
Preferably, the plasticizer is N-4 (anilinophenyl) maleimide, the self-lubricant is simethicone, the oxidant is zinc oxide, the heat-resistant agent is cerium oxide, and the anti-aging agent is N-phenyl-beta-naphthylamine.
A preparation process of a self-lubricating rubber composition comprises the following steps:
step one, preparing raw materials, namely weighing 80-95 parts of acrylate rubber and 20-40 parts of carbon black respectively;
step two, plasticating, namely placing 80-95 parts of weighed acrylic rubber, 20-40 parts of carbon black into a plasticator for plasticating, adding 5-10 parts of wear-resistant stabilizer, 2-5 parts of plasticizer, 2-5 parts of self-lubricant, 1-3 parts of sulfur, 2-5 parts of oxidant, 3-6 parts of heat-resistant agent and 1-3 parts of age inhibitor into the plasticator for mixing, adding pretreated magnetic powder in the mixing process for continuous mixing, and prolonging the mixing time to 2 times of the common mixing time so as to achieve the aim of uniformly dispersing the magnetic powder, thus obtaining a mixture;
and step three, vulcanization molding, namely putting the mixed rubber into a vulcanizing device, adding a vulcanizing agent for vulcanization, extruding into a tube shape, and putting the mixed mixture into a molding machine for molding to finally prepare the acrylate rubber composition material.
Compared with the prior art, the invention has the following beneficial effects:
the acrylate rubber composition material prepared from the acrylate rubber, the carbon black, the wear-resistant stabilizer, the plasticizer, the self-lubricant, the sulfur, the oxidant, the heat-resistant agent and the anti-aging agent has certain breaking strength, and the self-lubrication of the rubber material is realized, so that the lubrication degree of a product is increased.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The self-lubricating rubber composition of the embodiment comprises the following components in parts by weight:
80-95 parts of acrylate rubber, 20-40 parts of carbon black, 5-10 parts of wear-resistant stabilizer, 2-5 parts of plasticizer, 2-5 parts of self-lubricant, 1-3 parts of sulfur, 2-5 parts of oxidant, 3-6 parts of heat-resistant agent and 1-3 parts of anti-aging agent.
Comprises the following components in parts by weight:
85-90 parts of acrylate rubber, 20-35 parts of carbon black, 6-9 parts of wear-resistant stabilizer, 2-5 parts of plasticizer, 3-5 parts of self-lubricant, 1-3 parts of sulfur, 3-5 parts of oxidant, 3-5 parts of heat-resistant agent and 1-3 parts of anti-aging agent.
Comprises the following components in parts by weight:
88 parts of acrylate rubber, 30 parts of carbon black, 8 parts of wear-resistant stabilizer, 4 parts of plasticizer, 3 parts of self-lubricant, 2 parts of sulfur, 4 parts of oxidant, 5 parts of heat-resistant agent and 2 parts of anti-aging agent.
The wear-resistant stabilizer comprises the following components in percentage by mass: the mass ratio of the graphite powder to the silicon carbide to the nylon short fiber powder is 4-6:2-4:3:6.
The plasticizer is N-4 (anilinophenyl) maleimide, the self-lubricant is dimethyl silicone oil, the oxidant is zinc oxide, the heat-resistant agent is cerium oxide, and the anti-aging agent is N-phenyl-beta-naphthylamine.
A preparation process of a self-lubricating rubber composition is characterized by comprising the following steps of:
step one, preparing raw materials, namely weighing 80-95 parts of acrylate rubber and 20-40 parts of carbon black respectively;
step two, plasticating, namely placing 80-95 parts of weighed acrylic rubber, 20-40 parts of carbon black into a plasticator for plasticating, adding 5-10 parts of wear-resistant stabilizer, 2-5 parts of plasticizer, 2-5 parts of self-lubricant, 1-3 parts of sulfur, 2-5 parts of oxidant, 3-6 parts of heat-resistant agent and 1-3 parts of age inhibitor into the plasticator for mixing, adding pretreated magnetic powder in the mixing process for continuous mixing, and prolonging the mixing time to 2 times of the common mixing time so as to achieve the aim of uniformly dispersing the magnetic powder, thus obtaining a mixture;
and step three, vulcanization molding, namely putting the mixed rubber into a vulcanizing device, adding a vulcanizing agent for vulcanization, extruding into a tube shape, and putting the mixed mixture into a molding machine for molding to finally prepare the acrylate rubber composition material.
Example 1:
the self-lubricating rubber composition of the embodiment comprises the following components in parts by weight:
80 parts of acrylate rubber, 20 parts of carbon black, 5 parts of wear-resistant stabilizer, 2 parts of plasticizer, 2 parts of self-lubricant, 1 part of sulfur, 2 parts of oxidant, 3 parts of heat-resistant agent and 1 part of anti-aging agent.
The wear-resistant stabilizer comprises the following components in percentage by mass: the mass ratio of the graphite powder to the silicon carbide to the nylon short fiber powder is 4-6:2-4:3:6.
The plasticizer is N-4 (anilinophenyl) maleimide, the self-lubricant is dimethyl silicone oil, the oxidant is zinc oxide, the heat-resistant agent is cerium oxide, and the anti-aging agent is N-phenyl-beta-naphthylamine.
A preparation process of a self-lubricating rubber composition is characterized by comprising the following steps of:
step one, preparing raw materials, namely respectively weighing 80 parts of acrylate rubber and 20 parts of carbon black;
step two, plasticating, namely placing 80 parts of weighed acrylic rubber, 20 parts of carbon black into a plasticator for plasticating, adding 5 parts of wear-resistant stabilizer, 2 parts of plasticizer, 2 parts of self-lubricant, 1 part of sulfur, 2 parts of oxidant, 3 parts of heat-resistant agent and 1 part of antioxidant into the plasticator for mixing, adding pretreated magnetic powder into the mixing process for continuous mixing, and prolonging the mixing time to 2 times of the common mixing time so as to achieve the aim of uniformly dispersing the magnetic powder, thereby obtaining a mixture;
and step three, vulcanization molding, namely putting the mixed rubber into a vulcanizing device, adding a vulcanizing agent for vulcanization, extruding into a tube shape, and putting the mixed mixture into a molding machine for molding to finally prepare the acrylate rubber composition material.
Through detection, the defective rate is 0.01, and the tensile strength coefficient of the prepared acrylate rubber composition material is 6.9KN/m.
Example 2
The self-lubricating rubber composition of the embodiment comprises the following components in parts by weight:
95 parts of acrylate rubber, 40 parts of carbon black, 10 parts of wear-resistant stabilizer, 5 parts of plasticizer, 5 parts of self-lubricant, 3 parts of sulfur, 5 parts of oxidant, 6 parts of heat-resistant agent and 3 parts of anti-aging agent.
The wear-resistant stabilizer comprises the following components in percentage by mass: the mass ratio of the graphite powder to the silicon carbide to the nylon short fiber powder is 4-6:2-4:3:6.
The plasticizer is N-4 (anilinophenyl) maleimide, the self-lubricant is dimethyl silicone oil, the oxidant is zinc oxide, the heat-resistant agent is cerium oxide, and the anti-aging agent is N-phenyl-beta-naphthylamine.
A preparation process of a self-lubricating rubber composition is characterized by comprising the following steps of:
step one, preparing raw materials, namely respectively weighing 95 parts of acrylate rubber and 40 parts of carbon black;
step two, plasticating, namely placing 80-95 parts of weighed acrylic rubber and 20-40 parts of carbon black into a plasticator for plasticating, adding 10 parts of wear-resistant stabilizer, 5 parts of plasticizer, 5 parts of self-lubricant, 3 parts of sulfur, 5 parts of oxidant, 6 parts of heat-resistant agent and 3 parts of antioxidant into the plasticator for mixing, adding pretreated magnetic powder into the mixing process for continuous mixing, and prolonging the mixing time to 2 times of the common mixing time so as to achieve the aim of uniformly dispersing the magnetic powder, thereby obtaining a mixture;
and step three, vulcanization molding, namely putting the mixed rubber into a vulcanizing device, adding a vulcanizing agent for vulcanization, extruding into a tube shape, and putting the mixed mixture into a molding machine for molding to finally prepare the acrylate rubber composition material.
Through detection, the defective rate is 0.03, and the tensile strength coefficient of the prepared acrylate rubber composition material is 7.3KN/m.
Example 3
The self-lubricating rubber composition of the embodiment comprises the following components in parts by weight:
88 parts of acrylate rubber, 30 parts of carbon black, 8 parts of wear-resistant stabilizer, 4 parts of plasticizer, 3 parts of self-lubricant, 2 parts of sulfur, 4 parts of oxidant, 5 parts of heat-resistant agent and 2 parts of anti-aging agent.
The wear-resistant stabilizer comprises the following components in percentage by mass: the mass ratio of the graphite powder to the silicon carbide to the nylon short fiber powder is 4-6:2-4:3:6.
The plasticizer is N-4 (anilinophenyl) maleimide, the self-lubricant is dimethyl silicone oil, the oxidant is zinc oxide, the heat-resistant agent is cerium oxide, and the anti-aging agent is N-phenyl-beta-naphthylamine.
A preparation process of a self-lubricating rubber composition is characterized by comprising the following steps of:
step one, preparing raw materials, namely weighing 80-95 parts of acrylate rubber and 20-40 parts of carbon black respectively;
step two, plasticating, namely placing 80-95 parts of weighed acrylic rubber, 20-40 parts of carbon black into a plasticator for plasticating, adding 5-10 parts of wear-resistant stabilizer, 2-5 parts of plasticizer, 2-5 parts of self-lubricant, 1-3 parts of sulfur, 2-5 parts of oxidant, 3-6 parts of heat-resistant agent and 1-3 parts of age inhibitor into the plasticator for mixing, adding pretreated magnetic powder in the mixing process for continuous mixing, and prolonging the mixing time to 2 times of the common mixing time so as to achieve the aim of uniformly dispersing the magnetic powder, thus obtaining a mixture;
and step three, vulcanization molding, namely putting the mixed rubber into a vulcanizing device, adding a vulcanizing agent for vulcanization, extruding into a tube shape, and putting the mixed mixture into a molding machine for molding to finally prepare the acrylate rubber composition material.
Through detection, the defective rate is 0.02, and the tensile strength coefficient of the prepared acrylate rubber composition material is 7.1KN/m.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. The self-lubricating rubber composition is characterized by comprising the following components in parts by weight:
80-95 parts of acrylate rubber, 20-40 parts of carbon black, 5-10 parts of wear-resistant stabilizer, 2-5 parts of plasticizer, 2-5 parts of self-lubricant, 1-3 parts of sulfur, 2-5 parts of oxidant, 3-6 parts of heat-resistant agent and 1-3 parts of anti-aging agent.
2. The self-lubricating rubber composition according to claim 1, which comprises the following components in parts by weight:
85-90 parts of acrylate rubber, 20-35 parts of carbon black, 6-9 parts of wear-resistant stabilizer, 2-5 parts of plasticizer, 3-5 parts of self-lubricant, 1-3 parts of sulfur, 3-5 parts of oxidant, 3-5 parts of heat-resistant agent and 1-3 parts of anti-aging agent.
3. A self-lubricating rubber composition according to claim 2, comprising the following components in parts by weight:
88 parts of acrylate rubber, 30 parts of carbon black, 8 parts of wear-resistant stabilizer, 4 parts of plasticizer, 3 parts of self-lubricant, 2 parts of sulfur, 4 parts of oxidant, 5 parts of heat-resistant agent and 2 parts of anti-aging agent.
4. A self-lubricating rubber composition according to claim 1, wherein the wear-resistant stabilizer comprises the following components in mass ratio: the mass ratio of the graphite powder to the silicon carbide to the nylon short fiber powder is 4-6:2-4:3:6.
5. The self-lubricating rubber composition according to claim 1, wherein the plasticizer is N-4 (anilinophenyl) maleimide, the self-lubricant is simethicone, the oxidant is zinc oxide, the heat-resistant agent is cerium oxide, and the anti-aging agent is N-phenyl- β -naphthylamine.
6. The process for preparing a self-lubricating rubber composition according to claim 1, comprising the steps of:
step one, preparing raw materials, namely weighing 80-95 parts of acrylate rubber and 20-40 parts of carbon black respectively;
step two, plasticating, namely placing 80-95 parts of weighed acrylic rubber, 20-40 parts of carbon black into a plasticator for plasticating, adding 5-10 parts of wear-resistant stabilizer, 2-5 parts of plasticizer, 2-5 parts of self-lubricant, 1-3 parts of sulfur, 2-5 parts of oxidant, 3-6 parts of heat-resistant agent and 1-3 parts of age inhibitor into the plasticator for mixing, adding pretreated magnetic powder in the mixing process for continuous mixing, and prolonging the mixing time to 2 times of the common mixing time so as to achieve the aim of uniformly dispersing the magnetic powder, thus obtaining a mixture;
and step three, vulcanization molding, namely putting the mixed rubber into a vulcanizing device, adding a vulcanizing agent for vulcanization, extruding into a tube shape, and putting the mixed mixture into a molding machine for molding to finally prepare the acrylate rubber composition material.
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| CN202310733546.7A CN116874962A (en) | 2023-06-20 | 2023-06-20 | Self-lubricating rubber composition and preparation process thereof |
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| CN202310733546.7A CN116874962A (en) | 2023-06-20 | 2023-06-20 | Self-lubricating rubber composition and preparation process thereof |
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