CN117534912A - Self-lubricating ethylene propylene diene monomer rubber and preparation method and application thereof - Google Patents
Self-lubricating ethylene propylene diene monomer rubber and preparation method and application thereof Download PDFInfo
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- CN117534912A CN117534912A CN202311311952.0A CN202311311952A CN117534912A CN 117534912 A CN117534912 A CN 117534912A CN 202311311952 A CN202311311952 A CN 202311311952A CN 117534912 A CN117534912 A CN 117534912A
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- ethylene propylene
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- 229920002943 EPDM rubber Polymers 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 239000006229 carbon black Substances 0.000 claims abstract description 26
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 150000002148 esters Chemical class 0.000 claims abstract description 17
- 239000004014 plasticizer Substances 0.000 claims abstract description 17
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 claims abstract description 12
- 239000011787 zinc oxide Substances 0.000 claims abstract description 12
- FATBGEAMYMYZAF-UHFFFAOYSA-N oleicacidamide-heptaglycolether Natural products CCCCCCCCC=CCCCCCCCC(N)=O FATBGEAMYMYZAF-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000005662 Paraffin oil Substances 0.000 claims abstract description 10
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 10
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 10
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000008117 stearic acid Substances 0.000 claims abstract description 10
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 claims abstract description 10
- CPGFMWPQXUXQRX-UHFFFAOYSA-N 3-amino-3-(4-fluorophenyl)propanoic acid Chemical compound OC(=O)CC(N)C1=CC=C(F)C=C1 CPGFMWPQXUXQRX-UHFFFAOYSA-N 0.000 claims abstract 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract 3
- 229910052717 sulfur Inorganic materials 0.000 claims abstract 3
- 239000011593 sulfur Substances 0.000 claims abstract 3
- 229960002447 thiram Drugs 0.000 claims abstract 3
- 239000000463 material Substances 0.000 claims description 54
- 238000002156 mixing Methods 0.000 claims description 43
- 229920001971 elastomer Polymers 0.000 claims description 38
- 238000004513 sizing Methods 0.000 claims description 36
- 238000007599 discharging Methods 0.000 claims description 17
- 238000004898 kneading Methods 0.000 claims description 16
- 239000002994 raw material Substances 0.000 claims description 16
- 238000005303 weighing Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- PGNWIWKMXVDXHP-UHFFFAOYSA-L zinc;1,3-benzothiazole-2-thiolate Chemical compound [Zn+2].C1=CC=C2SC([S-])=NC2=C1.C1=CC=C2SC([S-])=NC2=C1 PGNWIWKMXVDXHP-UHFFFAOYSA-L 0.000 claims 2
- 239000000314 lubricant Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 10
- 238000001125 extrusion Methods 0.000 abstract description 2
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 abstract 2
- BOXSVZNGTQTENJ-UHFFFAOYSA-L zinc dibutyldithiocarbamate Chemical compound [Zn+2].CCCCN(C([S-])=S)CCCC.CCCCN(C([S-])=S)CCCC BOXSVZNGTQTENJ-UHFFFAOYSA-L 0.000 abstract 1
- 238000001746 injection moulding Methods 0.000 description 18
- 239000000047 product Substances 0.000 description 18
- 230000001050 lubricating effect Effects 0.000 description 10
- 230000032683 aging Effects 0.000 description 8
- 230000002459 sustained effect Effects 0.000 description 7
- 238000005461 lubrication Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003879 lubricant additive Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007704 transition Effects 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
- 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
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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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 relates to a self-lubricating ethylene propylene diene monomer rubber, a preparation method and application thereof, wherein the self-lubricating ethylene propylene diene monomer rubber comprises the following components in parts by weight: ethylene propylene diene monomer rubber: 100 parts of fast extrusion carbon black: 50-80 parts of paraffin oil: 5-40 parts of ester plasticizer: 2-5 parts of oleamide: 12-20 parts of zinc oxide: 4-6 parts of stearic acid: 1-3 parts of 2-mercaptobenzothiazole: 0.5-2 parts of zinc di-n-butyl dithiocarbamate: 0.5-2 parts of tetramethylthiuram disulfide: 0.5 to 1 part of dipentamethylenethiuram tetrasulfide: 0.5 to 1 part of sulfur: 0.5-2 parts. The product of the invention has self-lubricating effect in a short time. In the dynamic use environment, the lubricant can be rapidly, continuously separated out for a long time under the condition that the lubricant is continuously consumed, so as to ensure the effect of continuously having low friction resistance in the dynamic environment.
Description
The application is a divisional application, and the application number of the original application is: 202111035207.9", application date is: the invention name of "2021, 09, 05/year" is: a self-lubricating ethylene propylene diene monomer rubber and a preparation method thereof.
Technical Field
The invention relates to the field of ethylene propylene diene monomer, in particular to self-lubricating ethylene propylene diene monomer and a preparation method thereof.
Background
Rubber articles generally exhibit a high coefficient of friction due to their high elasticity and deformability. When the rubber is used in dynamic environment (such as automobile, machinery and other industries, some rotating and sealing parts), the rubber product can generate great resistance to rotation and sliding, so that abrasion of the product is easy to accelerate, and meanwhile, the energy consumption required for maintaining the movement is increased, and the operation load of the whole system is increased.
To solve the above problems, the use of self-lubricating rubber instead of conventional rubber is an effective solution. However, at present. The self-lubricating rubber is easy to assemble and slide. The lubricating effect is weak, the lubricating effect cannot be quickly achieved, or the duration is short, and the original self-lubricating rubber cannot be suitable for the continuously sliding and rotating parts due to the fact that the self-lubricating rubber is short in duration, so that the whole system is large in operation compliance and short in service life.
Disclosure of Invention
The invention aims to provide the self-lubricating rubber capable of keeping a good lubricating effect for a long time, and the product can keep the good lubricating effect for a long time through reasonable proportion and reasonable selection and proportion of the lubricant; in addition, the formula can smoothly realize mixing by a specific processing mode. Thereby meeting the high-efficiency use of the self-lubricating rubber.
The invention adopts the technical scheme that:
the invention provides a self-lubricating ethylene propylene diene monomer rubber which comprises the following components in parts by weight:
preferably, the ester plasticizer is a plasticizer Robin Hasi TP-95.
In the invention, ethylene propylene diene monomer, quick extrusion carbon black, paraffin oil and stearic acid are all general materials, and conventional materials in the market can be used.
The zinc oxide in the invention is indirect zinc oxide or active zinc oxide.
M, BZ, TMTD, DPTT, S is a general-purpose material in the present invention.
The preparation method of the self-lubricating ethylene propylene diene monomer rubber comprises the following steps:
(1) Weighing all the raw materials: wherein the carbon black is divided into two equal parts for weighing, and the rest raw materials are independently weighed;
(2) Mixing ethylene propylene diene monomer rubber (120+/-20) S in a kneader; half of carbon black, zinc oxide, stearic acid and oleamide are added for mixing, and the mixing time is 300+/-50S; simultaneously adding the rest carbon black and paraffin oil and ester plasticizer into a kneader for mixing, and discharging rubber after mixing to 115-120 ℃;
(3) Placing the mixed sizing material at room temperature for 12-36h, putting into a kneader, kneading (30+/-10) S, putting into M, BZ, TMTD, DPTT, S, continuously kneading to 80-100 ℃, and discharging the sizing material;
(4) And (3) passing the mixed sizing material through a sheet for 3-5 times in an open mill, and blanking according to the required size.
The invention also provides application of the self-lubricating ethylene propylene diene monomer in dynamic environments of automobile or mechanical industry.
The invention has the beneficial effects that:
1) The formula system is suitable for ethylene propylene diene monomer rubber, and the ester plasticizer in the formula plays a role in quick lubrication: by utilizing the characteristic of poor compatibility with ethylene propylene diene monomer, the ester plasticizer can quickly permeate out of the surface of the product at the initial stage of using the product to form a lubricating film, and meanwhile, the lubricating film can accelerate the seepage speed of the subsequent lubricant to play a role in initial transition. The oleic acid amide is used as a durable lubricant, has slightly better compatibility with ethylene propylene diene monomer rubber, has slower exudation speed, and can continuously exude for a long time to play a role in lubrication. Because the oleamide is solid and well combined with the surface of rubber, but the lubricating effect is slightly poorer than that of an ester plasticizer, the amount of the oleamide added in the Gu Ben invention is larger, and the sufficient lubricating effect of the product can be ensured in the use process. In addition, through the proportion of the materials in the invention, proper crosslinking density is formed, so that the reasonable seepage speed of the lubricant is ensured.
2) The mixing ratio of the materials in the invention can achieve good mixing effect and use effect by a specific preparation method. Compared with the prior art, the method has the following advantages: the product prepared by the formula of the invention has a self-lubricating effect in a short time. In the dynamic use environment, the lubricant can be rapidly, continuously separated out for a long time under the condition that the lubricant is continuously consumed, so as to ensure the effect of continuously having low friction resistance in the dynamic environment.
Detailed Description
The invention is further illustrated below with reference to specific examples, but without limiting the scope of the invention.
Example 1:
the self-lubricating ethylene propylene diene monomer comprises the following components in parts by weight:
the above formula is mixed according to the following process:
(1) Weighing all the raw materials: wherein the carbon black is divided into two equal parts for weighing, and the rest raw materials are independently weighed;
(2) Ethylene propylene diene monomer is put into a kneader for mixing for 120S; half of carbon black, zinc oxide, stearic acid and oleamide are added for mixing, and the mixing time is 300S; and (3) simultaneously adding the rest carbon black, paraffin oil and ester plasticizer into a kneader for mixing, and discharging rubber after mixing to 120 ℃.
(3) And (3) standing the mixed sizing material for 24 hours at room temperature, putting the sizing material into a kneader, kneading for 30 seconds, putting the sizing material into M, BZ, TMTD, DPTT, S, continuously kneading to 100 ℃, and discharging the sizing material.
(4) And (3) passing the mixed sizing material through a roll mill for 5 times, and discharging.
The material in this example has a coefficient of dynamic friction of 0.075 as measured by ASTM 1894. After aging at 100 ℃ for 168 hours, the surface of the sample was cleaned and left at room temperature for 24 hours, and then tested according to ASTM1894, with a coefficient of kinetic friction of 0.119.
The product manufactured by the materials prepared according to the formula and the preparation method of the embodiment is arranged at the dynamic sealing part of the valve of the automobile cooling system, the initial torque is 0.7Nm, after the dynamic friction is sustained for 20000 circles, the friction rotation torque of the rubber part and the injection molding part is 1.2Nm and 40000 circles, after the friction rotation torque of the rubber part and the injection molding part is less than 1.8Nm and 70000 circles, the friction rotation torque of the rubber part and the injection molding part is less than 2.8Nm, and the whole process is free from leakage.
Example 2:
the self-lubricating ethylene propylene diene monomer comprises the following components in parts by weight:
the above formula is mixed according to the following process:
(1) Weighing all the raw materials: wherein the carbon black is divided into two equal parts for weighing, and the rest raw materials are independently weighed;
(2) Ethylene propylene diene monomer is put into a kneader for mixing for 100S; half of carbon black, zinc oxide, stearic acid and oleamide are added for mixing, and the mixing time is 250S; and (3) simultaneously adding the rest carbon black, paraffin oil and ester plasticizer into a kneader for mixing, and discharging rubber after mixing to 115 ℃.
(3) And (3) standing the mixed sizing material for 12 hours at room temperature, putting the sizing material into a kneader, kneading for 20 seconds, putting the sizing material into M, BZ, TMTD, DPTT, S, continuously kneading to 80 ℃, and discharging the sizing material.
(4) And (3) passing the mixed sizing material through a roll mill for 3 times, and blanking according to the required size.
The material in this example has a dynamic coefficient of friction of 0.056 as measured by ASTM 1894. After aging at 100 ℃ for 168 hours, the surface of the sample was cleaned and left at room temperature for 24 hours, and then tested according to ASTM1894, with a coefficient of kinetic friction of 0.092.
The product manufactured by the materials prepared according to the formula and the preparation method of the embodiment is arranged at the dynamic sealing part of the valve of the automobile cooling system, the initial torque is 0.6Nm, after the dynamic friction is sustained for 20000 circles, the friction rotation torque of the rubber part and the injection molding part is 0.9Nm and 40000 circles, after the friction rotation torque of the rubber part and the injection molding part is less than 1.4Nm and 70000 circles, the friction rotation torque of the rubber part and the injection molding part is less than 2.5Nm, and the whole process is free from leakage.
Example 3:
the self-lubricating ethylene propylene diene monomer comprises the following components in parts by weight:
(1) Weighing all the raw materials: wherein the carbon black is divided into two equal parts for weighing, and the rest raw materials are independently weighed;
(2) Ethylene propylene diene monomer is put into a kneader for mixing for 140S; half of carbon black, zinc oxide, stearic acid and oleamide are added for mixing, and the mixing time is 350S; and (3) simultaneously adding the rest carbon black, paraffin oil and ester plasticizer into a kneader for mixing, and discharging rubber after mixing to 120 ℃.
(3) And (3) standing the mixed sizing material for 24 hours at room temperature, putting the sizing material into a kneader, kneading for 40 seconds, putting the sizing material into M, BZ, TMTD, DPTT, S, continuously kneading to 100 ℃, and discharging the sizing material.
(4) And (3) passing the mixed sizing material through a roll mill for 5 times, and blanking according to the required size.
The material in this example has a coefficient of dynamic friction of 0.087 as measured by ASTM 1894. After aging at 100 ℃ for 168 hours, the surface of the sample was cleaned and left at room temperature for 24 hours, and then tested according to ASTM1894, with a coefficient of dynamic friction of 0.125.
The product manufactured by the materials prepared according to the formula and the preparation method of the embodiment is arranged at the dynamic sealing part of the valve of the automobile cooling system, the initial torque is 0.7Nm, after the dynamic friction is sustained for 20000 circles, the friction rotation torque of the rubber part and the injection molding part is 1.1Nm and 40000 circles, after the friction rotation torque of the rubber part and the injection molding part is less than 1.6Nm and 70000 circles, the friction rotation torque of the rubber part and the injection molding part is less than 2.7Nm, and the whole process is free from leakage.
Example 4
The self-lubricating ethylene propylene diene monomer comprises the following components in parts by weight:
(1) Weighing all the raw materials: wherein the carbon black is divided into two equal parts for weighing, and the rest raw materials are independently weighed;
(2) Ethylene propylene diene monomer is put into a kneader for mixing for 140S; half of carbon black, zinc oxide, stearic acid and oleamide are added for mixing, and the mixing time is 300S; and (3) simultaneously adding the rest carbon black, paraffin oil and ester plasticizer into a kneader for mixing, and discharging rubber after mixing to 120 ℃.
(3) And (3) standing the mixed sizing material for 24 hours at room temperature, putting the sizing material into a kneader, kneading for 35 seconds, putting the sizing material into M, BZ, TMTD, DPTT, S, continuously kneading to 110 ℃, and discharging the sizing material.
(4) And (3) passing the mixed sizing material through a roll mill for 5 times, and blanking according to the required size.
The material in this example has a dynamic coefficient of friction of 0.081 as measured by ASTM 1894. After aging at 100 ℃ for 168 hours, the surface of the sample was cleaned and left at room temperature for 24 hours, and then tested according to ASTM1894, with a coefficient of kinetic friction of 0.117.
The product manufactured by the materials prepared according to the formula and the preparation method of the embodiment is arranged at the dynamic sealing part of the valve of the automobile cooling system, the initial torque is 0.6Nm, after the dynamic friction is sustained for 20000 circles, the friction rotation torque of the rubber part and the injection molding part is 1.0Nm and 40000 circles, after the friction rotation torque of the rubber part and the injection molding part is less than 1.6Nm and 70000 circles, the friction rotation torque of the rubber part and the injection molding part is less than 2.6Nm, and the whole process is free from leakage.
Example 5
(1) Weighing all the raw materials: wherein the carbon black is divided into two equal parts for weighing, and the rest raw materials are independently weighed;
(2) Ethylene propylene diene monomer is put into a kneader for mixing 130S; half of carbon black, zinc oxide, stearic acid and oleamide are added for mixing, and the mixing time is 330S; and (3) simultaneously adding the rest carbon black, paraffin oil and ester plasticizer into a kneader for mixing, and discharging rubber after mixing to 115 ℃.
(3) And (3) standing the mixed sizing material for 36 hours at room temperature, putting the sizing material into a kneader, kneading for 35 seconds, putting the sizing material into M, BZ, TMTD, DPTT, S, continuously kneading to 110 ℃, and discharging the sizing material.
(4) And (3) passing the mixed sizing material through a roll mill for 4 times, and blanking according to the required size.
The material in this example has a dynamic coefficient of friction of 0.062, as measured by ASTM 1894. After aging at 100 ℃ for 168 hours, the surface of the sample was cleaned and left at room temperature for 24 hours, and then tested according to ASTM1894, with a coefficient of kinetic friction of 0.126.
The product manufactured by the materials prepared according to the formula and the preparation method of the embodiment is arranged at the dynamic sealing part of the valve of the automobile cooling system, the initial torque is 0.6Nm, after the dynamic friction is sustained for 20000 circles, the friction rotation torque of the rubber part and the injection molding part is 0.9Nm and 40000 circles, after the friction rotation torque of the rubber part and the injection molding part is less than 1.5Nm and 70000 circles, the friction rotation torque of the rubber part and the injection molding part is less than 2.7Nm, and the whole process is free from leakage.
Comparative example 1: schemes as described in CN110591237A
The material in this example has a coefficient of dynamic friction of 0.236 as measured by ASTM 1894. After aging at 100 ℃ for 168 hours, the surface of the sample was cleaned and left at room temperature for 24 hours, and then tested according to ASTM1894, with a coefficient of kinetic friction of 0.218.
The product manufactured according to the scheme is arranged at the dynamic sealing part of the valve of the automobile cooling system, and the initial rotation torque exceeds 5Nm.
The lubrication effect of this solution is insufficient.
Comparative example 2: the formula of the ester plasticizer is removed in the scheme of the invention, and the formula is as follows:
the material of this example, after being prepared into a test sample, was left for 24 hours and tested according to ASTM1894 with a coefficient of dynamic friction of 0.189. After aging at 100 ℃ for 168 hours, the surface of the sample was cleaned and left at room temperature for 24 hours, and then tested according to ASTM1894, with a coefficient of kinetic friction of 0.178.
The product manufactured according to the scheme is arranged at the dynamic sealing part of the valve of the automobile cooling system, the initial torque is 3.2Nm, and after the dynamic friction is sustained for 20000 circles, the friction rotation torque of the rubber part and the injection molding part is 1.8Nm, so that leakage occurs.
The lubricating oil is free of ester lubricating ester, the initial torque of the product is overlarge, and the product is worn after 20000 circles of friction to cause leakage.
Comparative example 3: the lubricant additive amount in the scheme of the invention is reduced, and the formula is as follows:
the material in this example has a coefficient of dynamic friction of 0.157 as measured by ASTM 1894. After aging at 100 ℃ for 168 hours, the surface of the sample was cleaned and left at room temperature for 24 hours, and then tested according to ASTM1894, with a coefficient of kinetic friction of 0.322.
The product manufactured according to the scheme is arranged at a dynamic sealing part of a valve of an automobile cooling system, the initial torque is 0.8Nm, after the dynamic friction is sustained for 20000 circles, the friction rotation torque of the rubber part and the injection molding part is 1.8Nm and 40000 circles, after the friction rotation torque of the rubber part and the injection molding part is less than 2.6Nm and 60000 circles, the torque exceeds 5Nm, abnormal noise occurs during rotation, and leakage occurs.
The less the lubricant is added, the less the overall lubrication effect is required, and the longer the lubricant is, the poorer the lubrication effect is.
In summary, the formula and the implementation method of the embodiment can be adopted to prepare the self-lubricating rubber with good lubricating effect for a long time, so that the product can still separate out the lubricant rapidly, for a long time and continuously under the condition that the lubricant is continuously consumed in a dynamic use environment, thereby ensuring the effect of low friction resistance continuously in the dynamic environment.
Claims (8)
1. The utility model provides a self-lubricating ethylene propylene diene monomer, its characterized in that: the components and the parts by weight thereof are as follows:
the ester plasticizer is a plasticizer Robin Hasi TP-95.
2. The self-lubricating ethylene propylene diene monomer rubber according to claim 1, wherein: the self-lubricating ethylene propylene diene monomer is prepared by a method comprising the following steps:
(1) Weighing all the raw materials: wherein the carbon black is divided into two equal parts for weighing, and the rest raw materials are independently weighed;
(2) Ethylene propylene diene monomer is put into a kneader for mixing for 120 S+/-20S; half of carbon black, zinc oxide, stearic acid and oleamide are added for mixing, and the mixing time is 300 S+/-50S; simultaneously adding the rest carbon black and paraffin oil and ester plasticizer into a kneader for mixing, and discharging rubber after mixing to 115-120 ℃;
(3) Placing the mixed sizing material at room temperature for 12-36h, putting the sizing material into a kneader, kneading for 30 S+/-10S, then putting 2-mercaptobenzothiazole, zinc di-n-butyldithiocarbamate, tetramethylthiuram disulfide, dipentamethylenethiuram tetrasulfide and sulfur, and continuously kneading to 80-100 ℃ for removing the sizing material;
(4) And (3) passing the mixed sizing material through a sheet in an open mill for 3-5 times, and discharging.
3. A self-lubricating ethylene propylene diene monomer according to claim 1 or 2, characterized in that: the components and the parts by weight thereof are as follows:
4. a self-lubricating ethylene propylene diene monomer according to claim 1 or 2, characterized in that: the components and the parts by weight thereof are as follows:
5. a self-lubricating ethylene propylene diene monomer according to claim 1 or 2, characterized in that: the components and the parts by weight thereof are as follows:
6. the method for preparing the self-lubricating ethylene propylene diene monomer rubber according to any one of claims 1 to 5, which is characterized in that: the method comprises the following steps:
(1) Weighing all the raw materials: wherein the carbon black is divided into two equal parts for weighing, and the rest raw materials are independently weighed;
(2) Ethylene propylene diene monomer is put into a kneader for mixing for 120 S+/-20S; half of carbon black, zinc oxide, stearic acid and oleamide are added for mixing, and the mixing time is 300 S+/-50S; simultaneously adding the rest carbon black and paraffin oil and ester plasticizer into a kneader for mixing, and discharging rubber after mixing to 115-120 ℃;
(3) Placing the mixed sizing material at room temperature for 12-36h, putting the sizing material into a kneader, kneading for 30 S+/-10S, then putting 2-mercaptobenzothiazole, zinc di-n-butyldithiocarbamate, tetramethylthiuram disulfide, dipentamethylenethiuram tetrasulfide and sulfur, and continuously kneading to 80-100 ℃ for removing the sizing material;
(4) And (3) passing the mixed sizing material through a sheet in an open mill for 3-5 times, and discharging.
7. Use of the self-lubricating ethylene propylene diene monomer rubber according to any one of claims 1 to 5 in the dynamic environment of the automotive or mechanical industry.
8. Use of the self-lubricating ethylene propylene diene monomer rubber according to any one of claims 1-5 in dynamic sealing parts of valves of automobile cooling systems.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311311952.0A CN117534912A (en) | 2021-09-05 | 2021-09-05 | Self-lubricating ethylene propylene diene monomer rubber and preparation method and application thereof |
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| CN202111035207.9A CN114085464B (en) | 2021-09-05 | 2021-09-05 | Self-lubricating ethylene propylene diene monomer rubber and preparation method thereof |
| CN202311311952.0A CN117534912A (en) | 2021-09-05 | 2021-09-05 | Self-lubricating ethylene propylene diene monomer rubber and preparation method and application thereof |
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| CN115466464A (en) * | 2022-10-28 | 2022-12-13 | 江苏冠联新材料科技股份有限公司 | Ethylene propylene diene monomer rubber for washing machine door seal and preparation method thereof |
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| CN107868349B (en) * | 2017-12-12 | 2020-04-24 | 无锡市贝尔特胶带有限公司 | Rubber composition for transmission belt and transmission belt using the same |
| CN109096624B (en) * | 2018-08-30 | 2021-08-10 | 青岛三祥科技股份有限公司 | Rubber composition for automobile hose rubber core and preparation method thereof |
| CN110922686A (en) * | 2019-12-05 | 2020-03-27 | 青岛海力威新材料科技股份有限公司 | Novel water stop rubber material and preparation method thereof |
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| CN114085464A (en) | 2022-02-25 |
| CN114085464B (en) | 2023-10-13 |
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