CN113024899A - Natural rubber material with low friction coefficient and preparation method thereof - Google Patents
Natural rubber material with low friction coefficient and preparation method thereof Download PDFInfo
- Publication number
- CN113024899A CN113024899A CN202110243197.1A CN202110243197A CN113024899A CN 113024899 A CN113024899 A CN 113024899A CN 202110243197 A CN202110243197 A CN 202110243197A CN 113024899 A CN113024899 A CN 113024899A
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- Prior art keywords
- parts
- natural rubber
- rubber material
- accelerator
- friction coefficient
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- 244000043261 Hevea brasiliensis Species 0.000 title claims abstract description 34
- 229920003052 natural elastomer Polymers 0.000 title claims abstract description 34
- 229920001194 natural rubber Polymers 0.000 title claims abstract description 34
- 239000000463 material Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 229920001971 elastomer Polymers 0.000 claims abstract description 31
- 239000006229 carbon black Substances 0.000 claims abstract description 14
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000314 lubricant Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000006057 Non-nutritive feed additive Substances 0.000 claims abstract description 6
- 239000005662 Paraffin oil Substances 0.000 claims abstract description 6
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 6
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 6
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000008117 stearic acid Substances 0.000 claims abstract description 6
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 6
- 239000011593 sulfur Substances 0.000 claims abstract description 6
- 239000011787 zinc oxide Substances 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims description 9
- 238000004073 vulcanization Methods 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 4
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 claims description 4
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 claims description 4
- 238000003801 milling Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000002184 metal Substances 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract description 2
- 239000003381 stabilizer Substances 0.000 description 9
- 238000009966 trimming Methods 0.000 description 9
- 230000002159 abnormal effect Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 4
- 238000013329 compounding Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 241000872198 Serjania polyphylla Species 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004636 vulcanized 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
- C08L7/00—Compositions of natural rubber
-
- 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
Abstract
The invention discloses a natural rubber material with a low friction coefficient and a preparation method thereof, which relate to the technical field of rubber and are prepared from the following raw materials in parts by weight: 100 parts of natural rubber, 20-30 parts of medium-super wear-resistant carbon black, 30-40 parts of high-wear-resistant carbon black, 5-10 parts of paraffin oil, 3-8 parts of indirect-process zinc oxide, 0.5-1.5 parts of stearic acid, 3-5 parts of an anti-aging agent, 2.5-4.5 parts of a processing aid, 3-5 parts of a lubricant, 1.5-3 parts of sulfur and 1.5-3 parts of an accelerator. The natural rubber material prepared according to the formula and the preparation method has the characteristic of low friction coefficient, and the raw materials in the formula are matched with each other, so that a lubricating layer can be formed on the surface of a natural rubber part, the friction force generated when the rubber part and a metal rod part are rubbed in the mechanical movement process is reduced, and the abrasion and the friction noise are reduced.
Description
Technical Field
The invention relates to the technical field of rubber, in particular to a natural rubber material with a low friction coefficient and a preparation method thereof.
Background
The automobile chassis damping system is an important module for ensuring the stable driving comfort of an automobile body. The combined type automobile steering device bears the total weight of an automobile and the counterforce of the ground, relieves the impact of an uneven road surface on an automobile body, attenuates the vibration of the running of the automobile, keeps the running smoothness, is combined with a steering system, and ensures the operation stability of the automobile. Natural rubber with excellent fatigue resistance and small loss coefficient is widely applied to metal connecting parts of a chassis damping system for buffering and absorbing vibration. The joint of the rod piece is usually a natural rubber product such as a stabilizer bush, and the friction noise of the rubber piece and the metal rod piece is easy to generate due to the torsional motion in the working process.
With the continuous publicity of the time for fuel-oil-forbidden vehicles around the world, new energy vehicles overturned the traditional new wave. The battery motor replaces an engine, and the reduction of the noise of the whole power system can provide higher requirements for the automobile chassis damping system. The necessity of developing a natural rubber material with a low friction coefficient has arisen.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a natural rubber material with a low friction coefficient and a preparation method thereof.
The invention provides a natural rubber material with a low friction coefficient, which is prepared from the following raw materials in parts by weight: 100 parts of natural rubber, 20-30 parts of medium-super wear-resistant carbon black, 30-40 parts of high-wear-resistant carbon black, 5-10 parts of paraffin oil, 3-8 parts of indirect-process zinc oxide, 0.5-1.5 parts of stearic acid, 3-5 parts of an anti-aging agent, 2.5-4.5 parts of a processing aid, 3-5 parts of a lubricant, 1.5-3 parts of sulfur and 1.5-3 parts of an accelerator.
Preferably, the tensile strength of the natural rubber is more than or equal to 19 MPa.
Preferably, the lubricant is Disflow 12 MHS.
Preferably, the accelerator is compounded by at least one of an accelerator TMTD and an accelerator DM and an accelerator CZ; preferably, the promoter CZ is present in the promoter in an amount of 60-70% by weight.
The invention also provides a preparation method of the natural rubber material with the low friction coefficient, which comprises the following steps:
(1) mixing: preparing materials according to a formula, feeding all the raw materials into an internal mixer, and carrying out internal mixing to obtain a rubber compound;
(2) molding and vulcanizing: and (3) feeding the rubber compound into an open mill for open milling and forming, and feeding the formed rubber material into a vulcanizing device for vulcanizing treatment to obtain the rubber material.
Preferably, in the step (2), the open mill forming is carried out at 60-70 ℃.
Preferably, in the step (2), the vulcanization pressure is 170 to 190Kgf/cm2The vulcanization temperature is 160-170 ℃, and the vulcanization time is 240-360 s.
Has the advantages that: the natural rubber material with low friction coefficient is obtained by optimizing and selecting raw materials; the medium-super wear-resistant carbon black and the high wear-resistant carbon black with different particle sizes are used together, so that the processing performance is ensured, and the high physical and mechanical properties of the material are maintained; the adopted lubricant can be quickly separated out from the vulcanized rubber material, and a uniform, non-oily and low-friction-coefficient coating is formed on the surface of the lubricating material; by optimizing and selecting the accelerator, the wear resistance of the material is improved, and the rubber wear is reduced. The natural rubber material prepared according to the formula and the preparation method has the characteristic of low friction coefficient, and the raw materials are matched with each other, so that a lubricating layer can be formed on the surface of a natural rubber part, the friction force of the prepared stabilizer bar bushing rubber part and a metal rod piece during friction is reduced in the mechanical movement process, and the abrasion and the friction noise are reduced.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
A natural rubber material with low friction coefficient is prepared according to the following formula: 100 parts of natural rubber, 20 parts of medium super wear-resistant carbon black, 30 parts of high wear-resistant carbon black, 5 parts of paraffin oil, 3 parts of indirect zinc oxide, 0.5 part of stearic acid, 3 parts of anti-aging agent, 2.5 parts of processing aid, 3 parts of lubricant, 1.5 parts of sulfur and 1.5 parts of accelerator; wherein the accelerant is formed by compounding accelerant TMTD and accelerant CZ, and the weight percentage content of the accelerant CZ is 60%; the lubricant was Disflow 12 MHS.
The preparation method of the stabilizer bar bushing rubber part comprises the following steps:
(1) mixing: feeding the raw materials into an internal mixer, and obtaining mixed rubber through the internal mixer;
(2) molding and vulcanizing: mixing the mixed rubber with an open mill at 60 deg.C for molding, placing the molded rubber into a mold in a vulcanizing device under a pressure of 180Kgf/cm2Vulcanizing the rubber at 165 ℃ for 300 seconds;
(3) trimming and inspecting: trimming the vulcanized stabilizer bar bushing product, inspecting the size and appearance of the product after trimming, extracting 5 samples, and respectively testing the hardness and the low-temperature abnormal sound performance, wherein the product with the hardness of 70 +/-5 ℃ and the noise intensity of less than 60dB in the low-temperature abnormal sound performance test is a qualified product.
The detection shows that the obtained product has the hardness of 67 degrees, the strength of 17.7MPa, the elongation of 372 percent and the noise strength of less than 60dB, and is a qualified product.
Example 2
A natural rubber material with low friction coefficient is prepared according to the following formula: 100 parts of natural rubber, 25 parts of medium super wear-resistant carbon black, 35 parts of high wear-resistant carbon black, 7.5 parts of paraffin oil, 5 parts of indirect zinc oxide, 1 part of stearic acid, 4 parts of anti-aging agent, 3.5 parts of processing aid, 4 parts of lubricant, 2.25 parts of sulfur and 2.25 parts of accelerator; wherein the accelerator is formed by compounding an accelerator DM and an accelerator CZ, and the weight percentage content of the accelerator CZ is 65%; the lubricant was Disflow 12 MHS.
The preparation method of the stabilizer bar bushing rubber part comprises the following steps:
(1) mixing: feeding the raw materials into an internal mixer, and obtaining mixed rubber through the internal mixer;
(2) molding and vulcanizing: mixing the mixed rubber by an open mill at 60 ℃ for molding, putting the molded rubber into a mold in vulcanization equipment, and putting the molded rubber into the mold under the pressure of 180Kgf/cm2Vulcanizing the rubber at 165 ℃ for 300 seconds;
(3) trimming and inspecting: trimming the vulcanized stabilizer bar bushing product, inspecting the size and appearance of the product after trimming, extracting 5 samples, and respectively testing the hardness and the low-temperature abnormal sound performance, wherein the product with the hardness of 70 +/-5 ℃ and the noise intensity of less than 60dB in the low-temperature abnormal sound performance test is a qualified product.
The detection shows that the hardness of the obtained product is 70 degrees, the strength is 18.7MPa, the elongation is 354 percent, the noise intensity is lower than 60dB, and the product is qualified.
Example 3
A natural rubber material with low friction coefficient is prepared according to the following formula: 100 parts of natural rubber, 30 parts of medium super wear-resistant carbon black, 40 parts of high wear-resistant carbon black, 10 parts of paraffin oil, 8 parts of indirect zinc oxide, 1.5 parts of stearic acid, 5 parts of an anti-aging agent, 4.5 parts of a processing aid, 5 parts of a lubricant, 3 parts of sulfur and 3 parts of an accelerator; wherein the accelerant is formed by compounding accelerant TMTD and accelerant CZ, and the weight percentage content of the accelerant CZ is 70%; the lubricant was Disflow 12 MHS.
The preparation method of the stabilizer bar bushing rubber part comprises the following steps:
(1) mixing: feeding the raw materials into an internal mixer, and obtaining mixed rubber through the internal mixer;
(2) molding and vulcanizing: mixing the mixed rubber by an open mill at 60 ℃ for molding, putting the molded rubber into a mold in vulcanization equipment, and putting the molded rubber into the mold under the pressure of 180Kgf/cm2The temperature was 165 DEG CUnder the condition (1), vulcanizing the rubber for 300 seconds;
(3) trimming and inspecting: trimming the vulcanized stabilizer bar bushing product, inspecting the size and appearance of the product after trimming, extracting 5 samples, and respectively testing the hardness and the low-temperature abnormal sound performance, wherein the product with the hardness of 70 +/-5 ℃ and the noise intensity of less than 60dB in the low-temperature abnormal sound performance test is a qualified product.
The detection shows that the obtained product has the hardness of 72 degrees, the strength of 18.4MPa, the elongation of 326 percent and the noise strength of less than 60dB, and is a qualified product.
Practice proves that the stabilizer bar bushing product prepared from the natural rubber material with the low friction coefficient has the characteristic that the noise intensity in a low-temperature abnormal sound test is lower than 60 dB.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The natural rubber material with the low friction coefficient is characterized by being prepared from the following raw materials in parts by weight: 100 parts of natural rubber, 20-30 parts of medium-super wear-resistant carbon black, 30-40 parts of high-wear-resistant carbon black, 5-10 parts of paraffin oil, 3-8 parts of indirect-process zinc oxide, 0.5-1.5 parts of stearic acid, 3-5 parts of an anti-aging agent, 2.5-4.5 parts of a processing aid, 3-5 parts of a lubricant, 1.5-3 parts of sulfur and 1.5-3 parts of an accelerator.
2. The natural rubber material with a low friction coefficient as defined in claim 1, wherein the tensile strength of the natural rubber is 19MPa or more.
3. The low coefficient of friction natural rubber material of claim 1 or 2, wherein the lubricant is Disflow 12 MHS.
4. The low coefficient of friction natural rubber material of any one of claims 1-3, wherein the accelerator is compounded from at least one of accelerator TMTD and accelerator DM with accelerator CZ; preferably, the promoter CZ is present in the promoter in an amount of 60-70% by weight.
5. A method for preparing a natural rubber material having a low friction coefficient based on any one of claims 1 to 4, comprising the steps of:
(1) mixing: preparing materials according to a formula, feeding all the raw materials into an internal mixer, and carrying out internal mixing to obtain a rubber compound;
(2) molding and vulcanizing: and (3) feeding the rubber compound into an open mill for open milling and forming, and feeding the formed rubber material into a vulcanizing device for vulcanizing treatment to obtain the rubber material.
6. The method for producing a natural rubber material having a friction coefficient according to claim 5, wherein in the step (2), the open roll molding is performed at 60 to 70 ℃.
7. The method for preparing a natural rubber material having a coefficient of friction according to claim 5, wherein in the step (2), the vulcanization pressure is 170 to 190Kgf/cm2The vulcanization temperature is 160-170 ℃, and the vulcanization time is 240-360 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110243197.1A CN113024899A (en) | 2021-03-05 | 2021-03-05 | Natural rubber material with low friction coefficient and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110243197.1A CN113024899A (en) | 2021-03-05 | 2021-03-05 | Natural rubber material with low friction coefficient and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113024899A true CN113024899A (en) | 2021-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110243197.1A Pending CN113024899A (en) | 2021-03-05 | 2021-03-05 | Natural rubber material with low friction coefficient and preparation method thereof |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114276589A (en) * | 2021-12-30 | 2022-04-05 | 河南恒发科技股份有限公司 | Self-lubricating insulating rubber for vehicle auxiliary frame limiting block and processing technology thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002226633A (en) * | 2001-02-01 | 2002-08-14 | Toyo Tire & Rubber Co Ltd | Rubber vibration insulator composition and rubber vibration insulator using the same |
| JP2006206788A (en) * | 2005-01-31 | 2006-08-10 | Tokai Rubber Ind Ltd | Sliding rubber composition and vibration isolation rubber using it |
| CN103387697A (en) * | 2013-08-14 | 2013-11-13 | 安徽中鼎密封件股份有限公司 | Stabilizer bar bushing and preparation method thereof |
| CN105295120A (en) * | 2015-09-11 | 2016-02-03 | 博戈橡胶金属（上海）有限公司 | Rubber with self-lubricating effect for lining and preparation method of rubber |
| CN106750589A (en) * | 2016-12-02 | 2017-05-31 | 建新赵氏集团有限公司 | Low coefficient of kinetic friction natural rubber and preparation method thereof |
-
2021
- 2021-03-05 CN CN202110243197.1A patent/CN113024899A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002226633A (en) * | 2001-02-01 | 2002-08-14 | Toyo Tire & Rubber Co Ltd | Rubber vibration insulator composition and rubber vibration insulator using the same |
| JP2006206788A (en) * | 2005-01-31 | 2006-08-10 | Tokai Rubber Ind Ltd | Sliding rubber composition and vibration isolation rubber using it |
| CN103387697A (en) * | 2013-08-14 | 2013-11-13 | 安徽中鼎密封件股份有限公司 | Stabilizer bar bushing and preparation method thereof |
| CN105295120A (en) * | 2015-09-11 | 2016-02-03 | 博戈橡胶金属（上海）有限公司 | Rubber with self-lubricating effect for lining and preparation method of rubber |
| CN106750589A (en) * | 2016-12-02 | 2017-05-31 | 建新赵氏集团有限公司 | Low coefficient of kinetic friction natural rubber and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114276589A (en) * | 2021-12-30 | 2022-04-05 | 河南恒发科技股份有限公司 | Self-lubricating insulating rubber for vehicle auxiliary frame limiting block and processing technology thereof |
| CN114276589B (en) * | 2021-12-30 | 2023-06-20 | 河南恒发科技股份有限公司 | Self-lubricating insulating rubber for auxiliary frame limiting block for vehicle and processing technology thereof |
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Application publication date: 20210625 |
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