CN114539645A - Wear-resistant tire and preparation method thereof - Google Patents
Wear-resistant tire and preparation method thereof Download PDFInfo
- Publication number
- CN114539645A CN114539645A CN202111545158.3A CN202111545158A CN114539645A CN 114539645 A CN114539645 A CN 114539645A CN 202111545158 A CN202111545158 A CN 202111545158A CN 114539645 A CN114539645 A CN 114539645A
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- CN
- China
- Prior art keywords
- tire
- rubber
- rubber composition
- amount
- polylactic acid
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- Pending
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- 238000002360 preparation method Methods 0.000 title abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 41
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229920001971 elastomer Polymers 0.000 claims abstract description 31
- 239000005060 rubber Substances 0.000 claims abstract description 29
- 239000002245 particle Substances 0.000 claims abstract description 17
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 13
- 239000004626 polylactic acid Substances 0.000 claims abstract description 13
- 239000004636 vulcanized rubber Substances 0.000 claims description 14
- 238000004073 vulcanization Methods 0.000 claims description 11
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 8
- 229920003244 diene elastomer Polymers 0.000 claims description 8
- 229910052717 sulfur Inorganic materials 0.000 claims description 8
- 239000011593 sulfur Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 229920003052 natural elastomer Polymers 0.000 claims description 6
- 229920001194 natural rubber Polymers 0.000 claims description 6
- 244000043261 Hevea brasiliensis Species 0.000 claims description 5
- 239000005062 Polybutadiene Substances 0.000 claims description 5
- 229920002857 polybutadiene Polymers 0.000 claims description 5
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 5
- 238000004898 kneading Methods 0.000 claims description 3
- 150000001993 dienes Chemical class 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 239000000446 fuel Substances 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 description 14
- 239000000377 silicon dioxide Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 229920003051 synthetic elastomer Polymers 0.000 description 3
- 239000005061 synthetic rubber Substances 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- -1 ether ester Chemical class 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- ZZMVLMVFYMGSMY-UHFFFAOYSA-N 4-n-(4-methylpentan-2-yl)-1-n-phenylbenzene-1,4-diamine Chemical compound C1=CC(NC(C)CC(C)C)=CC=C1NC1=CC=CC=C1 ZZMVLMVFYMGSMY-UHFFFAOYSA-N 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerol Natural products OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- IUJLOAKJZQBENM-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)-2-methylpropan-2-amine Chemical compound C1=CC=C2SC(SNC(C)(C)C)=NC2=C1 IUJLOAKJZQBENM-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 1
- 229960002447 thiram Drugs 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000010920 waste tyre Substances 0.000 description 1
- 239000011240 wet gel 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
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a wear-resistant tire and a preparation method thereof. The rubber composition adopted by the tire of the invention contains polylactic acid particles and silica particles, thereby obviously improving the fuel economy, the wear resistance and the road noise reduction performance of the tire in a balanced manner.
Description
Technical Field
The invention belongs to the technical field of chemical industry, and particularly relates to a wear-resistant tire and a preparation method thereof.
Background
In our country, which is a large automobile country, and the annual output of tires is the first world, elastomer compositions such as rubber compositions used in tires and the like contain a large amount of elastomer components (rubbers and the like) as raw materials, and in the case of, for example, pneumatic tires for passenger cars using the rubber compositions, 50% by mass or more of the rubber compositions are composed of rubber components containing natural rubber and synthetic rubber. Therefore, the rubber composition and the tire using the same are easily affected by petroleum price, natural environmental changes, etc., resulting in increased raw material costs and difficulty in stable supply of products. A large amount of waste rubber products are treated as waste products and garbage every year, so that not only is a large amount of resource waste caused, but also black pollution is caused, and the problem becomes an increasingly serious environmental problem, but at present, the recycling application of waste tires is mostly concentrated on low-grade products such as tire retreading, environment-friendly reclaimed rubber and rubber powder production, and the high-level utilization of the waste rubber products is difficult. In particular, China tries on the technical specification of green tires in 2014, 3, 1, and further puts forward requirements and directions on the green application prospect of the tires.
In the traditional automobile tire material, most of the main components are natural rubber or synthetic rubber, some of which can obtain larger traction force, but the abrasion is fast and the service life is short; some of the shoes have slow damage, but have poor ground gripping performance, so that the use safety is influenced. It is well known that automobile tires, in addition to natural and synthetic rubber as a matrix, require large amounts of fillers to reduce cost and increase strength.
Silica is known to be excellent in both low rolling resistance and grip on wet road surfaces, and therefore silica is used as a filler in a rubber composition for a tire. However, silica is liable to aggregate due to silanol groups present on the particle surface, and the viscosity of the rubber composition increases during kneading, which causes deterioration of processability. Further, it is required to improve the abrasion resistance of the rubber composition for a tire, but it is difficult to improve both the processability and the abrasion resistance particularly in the case of a rubber composition containing a large amount of silica. In view of this technical problem, chinese granted patent CN110092959B discloses a rubber composition for a tire comprising a diene rubber, silica, and an ether ester which is a monoester and/or a diester of a polyoxyalkylene glycerin fatty acid ester, which can improve both processability and abrasion resistance of the rubber composition blended with silica.
Chinese granted patent CN110050024B also discloses a rubber composition for a tire capable of maintaining the vulcanization speed and improving the abrasion resistance, and a pneumatic tire using the same. The rubber composition for a tire is characterized by containing 0.3-3 parts by mass of a thiuram-based vulcanization accelerator with respect to 100 parts by mass of a rubber component containing a hydrogenated copolymer obtained by hydrogenating an aromatic vinyl-conjugated diene copolymer, wherein the hydrogenated copolymer has a weight average molecular weight of 30 ten thousand or more as measured by gel permeation chromatography, and the hydrogenation ratio of a conjugated diene moiety is 80 mol% or more.
However, how to further improve the fuel economy, wear resistance and road noise reduction of tires remains a technical problem to be solved by those skilled in the art.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a wear-resistant tire and a preparation method thereof. Specifically, in order to achieve the purpose of the present invention, the following technical solutions are proposed:
one aspect of the present invention relates to a wear-resistant tire, characterized in that the wear-resistant tire comprises diene rubber, silica particles, polylactic acid particles, sulfur and a vulcanization accelerator.
In a preferred embodiment of the present invention, the silica particles are used in an amount of 40 to 100wt% based on the amount of the diene rubber; preferably 60-80 wt%.
In a preferred embodiment of the present invention, the polylactic acid particles are used in an amount of 2 to 10wt% based on the amount of the diene rubber; preferably 3 to 8 wt%; further preferably 4 to 6 wt%.
In a preferred embodiment of the present invention, the polylactic acid particles have an average particle diameter of 5 to 15 μm; preferably 8-12 microns.
In a preferred embodiment of the present invention, wet silica such as wet precipitated silica or wet gel silica can be used as the silica. The BET specific surface area of the silica is preferably 100 to 300m2A further preferable range is 150 to 250m2/g。
In a preferred embodiment of the present invention, the silica particles and the polylactic acid particles are used in an amount of 13 to 15: 1. within this preferable range, the performance of the tire can be more effectively improved.
In a preferred embodiment of the present invention, the diene rubber contains at least one selected from the group consisting of Styrene Butadiene Rubber (SBR), Butadiene Rubber (BR), and Natural Rubber (NR), more preferably contains at least styrene butadiene rubber, and further preferably contains a combination of styrene butadiene rubber and butadiene rubber. The dosage ratio of the styrene butadiene rubber to the butadiene rubber is 3-5: 1.
the invention also relates to a preparation method of the wear-resistant tire, which is characterized by comprising the following steps:
adding the materials except the sulfur and the vulcanization accelerator into a mixing roll, mixing the materials for 3-8 minutes so that the discharge temperature is 130-150 ℃, and then discharging;
adding sulfur and a vulcanization accelerator to the kneaded mixture obtained, and kneading the mixture in an open roll mill for 2 to 4 minutes so that the discharge temperature is 70 to 90 ℃ to discharge, thereby obtaining an unvulcanized rubber composition;
the unvulcanized rubber composition is press-vulcanized at 180 ℃ to 160 ℃ to obtain a vulcanized rubber composition, and the vulcanized rubber composition is formed into a wear-resistant tire.
Advantageous effects
The rubber composition adopted by the tire of the invention contains polylactic acid particles and silica particles, thereby obviously improving the fuel economy, the wear resistance and the road noise reduction performance of the tire in a balanced manner.
Detailed Description
In order to further understand the present invention, 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. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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.
Unless otherwise specified, the reagents involved in the examples of the present invention are all commercially available products, and all of them are commercially available.
Examples and comparative examples
Table 1: formulations of examples and comparative examples
Wherein the silica particles have a specific surface area of 200m2Wet silica,/g, oil is "JOMOProcess X140" manufactured by japan energy company; the antioxidant is (N- (1, 3-dimethylbutyl) -N' -phenyl-p-phenylenediamine); vulcanization accelerator N-tert-butyl-2-benzothiazole-sulfenamide.
The materials except sulfur and vulcanization accelerator in the amounts shown in table 1 were charged into a mixer in which polylactic acid particles having an average particle diameter of 10 μm were kneaded for 5 minutes so that the discharge temperature was 140 ℃, and then discharged.
To the kneaded mixture obtained was added sulfur and a vulcanization accelerator in amounts shown in table 1, and the mixture was kneaded in an open roll mill for about 3 minutes so as to be discharged at a discharge temperature of 80 ℃, thereby obtaining an unvulcanized rubber composition.
The unvulcanized rubber composition was press-vulcanized at 170 ℃ for 20 minutes to obtain a vulcanized rubber composition.
The vulcanized rubber compositions prepared as described above were evaluated as follows, and the evaluation results are shown in Table 2.
1. Rolling resistance index
Test pieces (vulcanized rubber pieces) of predetermined sizes were cut out from the vulcanized rubber compositions of examples and comparative examples. The loss tangent (tan. delta.) of the vulcanized rubber sheet at 60 ℃ was measured using a viscoelastic spectrometer available from Ueshima Seisakusho Co., Ltd under conditions of 10% initial strain, 2% dynamic strain and a frequency of 10 Hz. The tan δ value was expressed as an index (rolling resistance index), with comparative example 1 being set to 100. A higher index indicates better fuel economy.
2. Abrasion resistance index
Test pieces of predetermined sizes were cut out of the vulcanized rubber compositions of examples and comparative examples. The lambouren abrasion loss of the test pieces was measured using a Lambourn abrasion tester at 20 ℃, a slip ratio of 20% and a test time of 2 minutes. Then, the volume loss was calculated from the Lambourn abrasion loss. The volume loss amount of each formulation example was expressed as an index (abrasion resistance index), with comparative example 1 being set to 100. The larger index value indicates the smaller abrasion amount, which means that the sample has excellent abrasion resistance.
3. Index of vibration characteristic of tire
Test pieces (vulcanized rubber pieces) of predetermined sizes were cut out from the vulcanized rubber compositions of examples and comparative examples. The loss coefficient (. eta.) of the vulcanized rubber sheet at 23 ℃ was measured using a central vibration exciter from B & K. The loss coefficient (η) of each formulation example was expressed as an index (tire vibration characteristic index), with comparative example 1 set to 100. A higher index indicates better road noise reduction performance (noise immunity).
Table 2: evaluation results of vulcanized rubber composition
As is apparent from the evaluation results of table 2, the rubber compositions of the examples containing both polylactic acid particles and silica particles showed improvements in all properties including rolling resistance, abrasion resistance and road noise reduction properties, particularly, were significantly improved in abrasion resistance. In particular, when the ratio of the weight parts of the polylactic acid particles to the weight parts of the silica particles is close to 1: the best improvement was found at 14 ℃.
The foregoing describes preferred embodiments of the present invention, but is not intended to limit the invention thereto. Modifications and variations of the embodiments disclosed herein may be made by those skilled in the art without departing from the scope and spirit of the invention.
Claims (8)
1. A tire characterized by comprising a diene rubber, silica particles, polylactic acid particles, sulfur and a vulcanization accelerator in the tire.
2. The tire according to claim 1, wherein said silica particles are present in an amount of 40 to 100% by weight of the amount of diene rubber.
3. The tire according to claim 1, wherein the polylactic acid particles are present in an amount of 2 to 10wt% based on the amount of the diene rubber.
4. The tyre according to claim 1, wherein the polylactic acid particles have an average particle size of between 5 and 15 microns.
5. The tire according to claim 1, wherein the silica particles have a BET specific surface area of 100 to 300m2/g。
6. Tyre according to claim 1, characterized in that said silica particles and polylactic acid particles are used in an amount of 13-15: 1.
7. the tire according to claim 1, wherein the diene-based rubber contains at least one selected from the group consisting of styrene butadiene rubber, butadiene rubber and natural rubber.
8. Process for the production of tyres according to any one of claims 1-7, comprising the steps of:
adding the materials except the sulfur and the vulcanization accelerator into a mixing roll, mixing the materials for 3-8 minutes so that the discharge temperature is 130-150 ℃, and then discharging;
adding sulfur and a vulcanization accelerator to the kneaded mixture obtained, and kneading the mixture for 2 to 4 minutes to discharge at a discharge temperature of 70 to 90 ℃ to thereby obtain an unvulcanized rubber composition;
the unvulcanized rubber composition is press-vulcanized at 160-180 ℃ to obtain a vulcanized rubber composition, and the vulcanized rubber composition is formed into a tire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111545158.3A CN114539645A (en) | 2021-12-17 | 2021-12-17 | Wear-resistant tire and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111545158.3A CN114539645A (en) | 2021-12-17 | 2021-12-17 | Wear-resistant tire and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114539645A true CN114539645A (en) | 2022-05-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111545158.3A Pending CN114539645A (en) | 2021-12-17 | 2021-12-17 | Wear-resistant tire and preparation method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN114539645A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1908047A (en) * | 2005-08-04 | 2007-02-07 | 住友橡胶工业株式会社 | Rubber composition and pneumatic tire using the same |
| JP2007224253A (en) * | 2006-02-27 | 2007-09-06 | Sumitomo Rubber Ind Ltd | Rubber composition for tread and pneumatic tire having the same |
| JP2011236025A (en) * | 2010-05-12 | 2011-11-24 | Yokohama Rubber Co Ltd:The | Rubber composition for conveyor belt |
| JP2012158738A (en) * | 2011-01-14 | 2012-08-23 | Yokohama Rubber Co Ltd:The | Polylactic acid, diene polymer modified with the polylactic acid, and rubber composition for tire containing the same |
| KR20160077896A (en) * | 2014-12-24 | 2016-07-04 | 한국타이어 주식회사 | Rubber composition for tire and tire manufactured by using the same |
| JP2020169239A (en) * | 2019-04-01 | 2020-10-15 | 横浜ゴム株式会社 | Rubber composition and studless tire therewith |
-
2021
- 2021-12-17 CN CN202111545158.3A patent/CN114539645A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1908047A (en) * | 2005-08-04 | 2007-02-07 | 住友橡胶工业株式会社 | Rubber composition and pneumatic tire using the same |
| JP2007224253A (en) * | 2006-02-27 | 2007-09-06 | Sumitomo Rubber Ind Ltd | Rubber composition for tread and pneumatic tire having the same |
| JP2011236025A (en) * | 2010-05-12 | 2011-11-24 | Yokohama Rubber Co Ltd:The | Rubber composition for conveyor belt |
| JP2012158738A (en) * | 2011-01-14 | 2012-08-23 | Yokohama Rubber Co Ltd:The | Polylactic acid, diene polymer modified with the polylactic acid, and rubber composition for tire containing the same |
| KR20160077896A (en) * | 2014-12-24 | 2016-07-04 | 한국타이어 주식회사 | Rubber composition for tire and tire manufactured by using the same |
| JP2020169239A (en) * | 2019-04-01 | 2020-10-15 | 横浜ゴム株式会社 | Rubber composition and studless tire therewith |
Non-Patent Citations (1)
| Title |
|---|
| 庄继德: "现代汽车轮胎技术", 北京理工大学出版社, pages: 326 - 327 * |
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Application publication date: 20220527 |