CN113321856B - Rubber composition for improving performance of tire in ice and snow fields and tire - Google Patents
Rubber composition for improving performance of tire in ice and snow fields and tire Download PDFInfo
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- CN113321856B CN113321856B CN202110651198.XA CN202110651198A CN113321856B CN 113321856 B CN113321856 B CN 113321856B CN 202110651198 A CN202110651198 A CN 202110651198A CN 113321856 B CN113321856 B CN 113321856B
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 69
- 239000005060 rubber Substances 0.000 title claims abstract description 69
- 239000000203 mixture Substances 0.000 title claims abstract description 58
- 239000006229 carbon black Substances 0.000 claims abstract description 27
- 239000011521 glass Substances 0.000 claims abstract description 25
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 21
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 21
- 229920001194 natural rubber Polymers 0.000 claims abstract description 21
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 239000005062 Polybutadiene Substances 0.000 claims abstract description 15
- 229920002857 polybutadiene Polymers 0.000 claims abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000004073 vulcanization Methods 0.000 claims abstract description 13
- 239000010692 aromatic oil Substances 0.000 claims abstract description 12
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- 230000007123 defense Effects 0.000 claims abstract description 10
- 239000006057 Non-nutritive feed additive Substances 0.000 claims abstract description 9
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- 230000003712 anti-aging effect Effects 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 235000021355 Stearic acid Nutrition 0.000 claims description 6
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- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 6
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 6
- 239000008117 stearic acid Substances 0.000 claims description 6
- 239000011593 sulfur Substances 0.000 claims description 6
- 229910052717 sulfur Inorganic materials 0.000 claims description 6
- 239000006232 furnace black Substances 0.000 claims description 5
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- 230000001681 protective effect Effects 0.000 claims description 4
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- 239000000344 soap Substances 0.000 claims description 2
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- 150000004670 unsaturated fatty acids Chemical class 0.000 claims description 2
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- 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 claims 1
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- OWRCNXZUPFZXOS-UHFFFAOYSA-N 1,3-diphenylguanidine Chemical compound C=1C=CC=CC=1NC(=N)NC1=CC=CC=C1 OWRCNXZUPFZXOS-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 238000009472 formulation Methods 0.000 description 4
- HNWAHFPYJHAAJE-UHFFFAOYSA-N n-tert-butyl-1,3-benzothiazole-2-sulfonamide Chemical compound C1=CC=C2SC(S(=O)(=O)NC(C)(C)C)=NC2=C1 HNWAHFPYJHAAJE-UHFFFAOYSA-N 0.000 description 4
- 239000004636 vulcanized rubber Substances 0.000 description 4
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- CBXRMKZFYQISIV-UHFFFAOYSA-N 1-n,1-n,1-n',1-n',2-n,2-n,2-n',2-n'-octamethylethene-1,1,2,2-tetramine Chemical compound CN(C)C(N(C)C)=C(N(C)C)N(C)C CBXRMKZFYQISIV-UHFFFAOYSA-N 0.000 description 1
- 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
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
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- 239000004519 grease Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- RLAWWYSOJDYHDC-BZSNNMDCSA-N lisinopril Chemical compound C([C@H](N[C@@H](CCCCN)C(=O)N1[C@@H](CCC1)C(O)=O)C(O)=O)CC1=CC=CC=C1 RLAWWYSOJDYHDC-BZSNNMDCSA-N 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- RQFLGKYCYMMRMC-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O.CCCCCCCCCCCCCCCCCC(O)=O RQFLGKYCYMMRMC-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000006235 reinforcing carbon black Substances 0.000 description 1
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- 238000001878 scanning electron micrograph Methods 0.000 description 1
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- 238000012795 verification Methods 0.000 description 1
- 238000013191 viscoelastic testing Methods 0.000 description 1
Images
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0016—Compositions of the tread
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a rubber composition for improving the performance of tires on ice and snow fields, which comprises the following components: 100 parts by weight of a rubber component; 23 to 25 parts by weight of carbon black; 32-35 parts by weight of white carbon black; 33 to 35 parts by weight of an aromatic oil; 2-5 parts by weight of an active agent; 2-6 parts by weight of a defense component; 1-2 parts by weight of a processing aid; 2-10 parts by weight of glass flakes; 1.5-3 parts by weight of a sulfur-adding agent; 0.4 to 2.5 parts by weight of a vulcanization accelerator; the rubber component consists of 60 to 70 weight percent of natural rubber, 10 to 20 weight percent of butadiene rubber and 15 to 25 weight percent of styrene-butadiene rubber. The tire tread formula composition mainly contains 2-10 PHR glass flakes, so that the contact area of the road surface with the ice and snow can be increased, the ground gripping performance is improved, and the braking distance is shortened. Meanwhile, the applied tire is a nailing-free tire, which is beneficial to vehicle comfort and the like.
Description
Technical Field
The invention relates to the technical field of rubber products, in particular to a rubber composition for improving performances of a tire in an ice and snow field and the tire.
Background
The tyre cover is composed of tread, tyre shoulder, cord fabric layer and tyre bead. Wherein, the tread is the part of the tire contacting with the road surface, and the tread rubber is the outermost layer of rubber material of the tire. The cord fabric is formed by attaching a plurality of layers of rubberized cord fabrics, and the edges of each layer are wrapped on the tire bead steel wires in a bending mode.
At present, for can let the tire walk on ice and snow ground road surface, can increase the tyre chain or use the nailing tire for the tire to increase the area of contact of tire and road surface, increase frictional force, but above mode can increase the tire noise, reduces the vehicle travelling comfort, very easily causes permanent destruction to the road surface. Therefore, the existing tire products are a nailing-free tire which can be used on the road surface on ice and snow.
The nailing-free tire is also called as a snow tire, and the tread of the conventional snow tire is easy to harden in a relatively cold environment, the contact surface with the road surface is reduced, a water film cannot be broken, the friction force is reduced, and unsafe conditions such as sideslip and vehicle sliding are easy to occur.
Disclosure of Invention
In view of the above, the present disclosure provides a rubber composition for improving performance of a tire on an ice and snow ground and the tire, and the rubber composition provided by the present disclosure can improve performance of the tire on the ice and snow ground, increase friction between a tire tread and an ice and snow road surface, and shorten a vehicle braking distance without nailing.
The invention provides a rubber composition for improving the performance of tires in ice and snow fields, which comprises the following components:
100 parts by weight of a rubber component;
23 to 25 parts by weight of carbon black;
32-35 parts by weight of white carbon black;
33 to 35 parts by weight of an aromatic oil;
2-5 parts by weight of an active agent;
2-6 parts by weight of a defense component;
1-2 parts by weight of a processing aid;
2-10 parts by weight of glass flakes;
1.5-3 parts by weight of a sulfur-adding agent;
0.4 to 2.5 parts by weight of a vulcanization accelerator;
the rubber component consists of 60 to 70 weight percent of natural rubber, 10 to 20 weight percent of butadiene rubber and 15 to 25 weight percent of styrene-butadiene rubber.
In the embodiment of the invention, the natural rubber is smoked sheet rubber #3, and the butadiene rubber is BR9000.
In the examples of the present invention, the rubber component was composed of 65 parts by weight of natural rubber, 15 parts by weight of butadiene rubber, and 20 parts by weight of styrene-butadiene rubber.
In the embodiment of the invention, the carbon black is super-resistant high-ductility medium-super wear-resistant furnace black SAF.
In an embodiment of the invention, the active agents include: 2 to 5 parts of zinc oxide and 1 to 3 parts of stearic acid.
In an embodiment of the invention, the defense component comprises: 1-2 parts of anti-aging agent, 1-2 parts of protective wax and 1-2 parts of microcrystalline wax.
In an embodiment of the invention, the glass flakes are micron-sized inert non-reinforcing materials.
In an embodiment of the present invention, the rubber composition includes 4 to 6 parts by weight of glass flakes.
In an embodiment of the present invention, the sulfur-adding agent is sulfur, and the vulcanization accelerator includes: 0.1 to 0.5 weight portion of accelerator DPG and 1 to 2 weight portions of accelerator TBBS.
The present invention provides a tire having a tread of the vulcanized rubber of the rubber composition described above.
Compared with the prior art, the rubber composition provided by the embodiment of the invention comprises the following components: 60-70 parts of natural rubber; 10-20 parts of butadiene rubber; 15-25 parts of styrene butadiene rubber; and comprises 23 to 25 parts by weight of carbon black; 32-35 parts by weight of white carbon black; 33 to 35 parts by weight of an aromatic oil; 2-5 parts by weight of an active agent; 2-6 parts by weight of a defense component; 1-2 parts by weight of a processing aid; 2-10 parts by weight of glass flakes; 1.5-3 parts by weight of a sulfur-adding agent; 0.4 to 2.5 parts by weight of a vulcanization accelerator. The tread formula composition mainly contains 2-10 PHR glass flakes, so that the contact area of the road surface on the ice and snow field can be increased, the ground gripping performance is improved, and the braking distance is shortened. Meanwhile, the applied tire is a nailing-free tire, which is beneficial to vehicle comfort and the like.
Drawings
FIG. 1 is an SEM photograph of example 1 without the addition of glass flakes;
FIG. 2 shows the dispersion of the glass flakes in the size of example 1.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The invention provides a rubber composition for improving performances of tires in ice and snow fields, which comprises the following components:
100 parts by weight of a rubber component;
23 to 25 parts by weight of carbon black;
32-35 parts by weight of white carbon black;
33 to 35 parts by weight of an aromatic oil;
2-5 parts by weight of an active agent;
2-6 parts by weight of a defense component;
1-2 parts by weight of a processing aid;
2-10 parts by weight of glass flakes;
1.5-3 parts by weight of a sulfur-adding agent;
0.4 to 2.5 parts by weight of a vulcanization accelerator;
the rubber component consists of 60 to 70 weight percent of natural rubber, 10 to 20 weight percent of butadiene rubber and 15 to 25 weight percent of styrene-butadiene rubber.
The invention provides a rubber composition capable of improving the performance of a tire on ice and snow, which is mainly used as a nailing-free tire tread, can increase the friction force on ice and snow road surfaces and improve the gripping performance of the tire.
In the formula of the rubber composition, 100 parts by weight of rubber component consists of 60-70 wt% of natural rubber, 10-20 wt% of butadiene rubber and 15-25 wt% of styrene butadiene rubber; preferably, the rubber component is composed of 65 parts by weight of natural rubber, 15 parts by weight of butadiene rubber and 20 parts by weight of styrene-butadiene rubber. Natural Rubber (NR) is a natural polymer compound containing polyisoprene as a main component, and is a general rubber which is most widely used; the natural rubber is not particularly limited in the present invention, and a general commercially available product such as a smoked sheet rubber can be used.
cis-Butadiene Rubber (BR) is an abbreviation for cis-1,4-polybutadiene rubber, which is polymerized from butadiene. Styrene Butadiene Rubber (SBR), also known as polystyrene butadiene copolymer, has physical and mechanical properties, processability and product use performance similar to natural rubber, and some properties such as wear resistance, heat resistance, aging resistance and vulcanization speed superior to natural rubber. In the specific embodiment of the invention, the natural rubber is natural rubber RSS #3 of a high and deep company, the butadiene rubber is BR9000 of a Yangzhi company, and the cis-butadiene structure is polybutadiene rubber with more than 96%; the styrene butadiene RUBBER is SL553 of PHU RIENG RUBBER.
In addition, the rubber composition according to the embodiment of the present invention employs the following reinforcing components: 23 to 25 parts by weight of carbon black; 32 to 35 parts by weight of white carbon black. Carbon black, also known as carbon black, is an amorphous carbon, either reinforcing carbon black or furnace black. The white carbon black mainly refers to precipitated silica, fumed silica and superfine silica gel, and is a porous substance. In the specific embodiment of the invention, the carbon black is SAF (super-resistant high-elongation medium-super-wear-resistant furnace black), the white carbon black is 1165MP, and the Solvay fine chemical industry is adopted. Namely, carbon black: iodine absorption value of 114.0-124.0mg I 2 (iv) g, oil absorption value of 120.0-130.0mL/100g, total surface area of 114.0-124.01000m 2 Per kg, average hardness gf 50Max, pH 7.0-10.0; white carbon black: water (100-110 ℃ C. Times.2 h) 8.0% MAX, pH 6.0-7.0, CTAB surface area 145.0-170.0m 2 Per g, BET surface area 150.0-180.0m 2 /g。
In the present invention, the rubber composition comprises 33 to 35 parts by weight of an aromatic oil, preferably 33.5 parts by weight. Aromatic oil is also called aromatic hydrocarbon or aromatic hydrocarbon, and refers to hydrocarbon compounds containing benzene ring structure in molecules; the aromatic hydrocarbon can increase the adhesiveness of the rubber compound and maintain the high strength of the vulcanized rubber, but has a certain influence on the heat generation of the vulcanized rubber, so that the ideal aromatic oil should have an appropriate chemical composition. Viscosity, flash point, aniline point are the main quality indicators characterizing the composition and physical properties of aromatic oils; aromatic oils with different physical properties have different effects on the properties of the vulcanizate. Specifically, the aromatic hydrocarbon oil in the examples of the present invention is H&VIVAT of R GROUPEC500, kinematic viscosity 15.0-25.0mm 2 S (100 ℃); flash point 210 ℃.
In the invention, the rubber composition comprises 2-5 parts by weight of an active agent. The active agents preferably include: 2 to 5 parts of zinc oxide (ZnO) and 1 to 3 parts of stearic acid. The components of zinc oxide and stearic acid can play roles in lubrication, convenient processing, vulcanization promotion and the like.
The rubber composition comprises 2-6 parts by weight of a defense component, and the defense component preferably comprises: 1-2 parts of anti-aging agent, 1-2 parts of protective wax and 1-2 parts of microcrystalline wax. The anti-aging agent is preferably an amine anti-aging agent, and has outstanding anti-aging performance. Specifically, the embodiment of the invention uses antioxidant 6PPD, which is N- (1,3-dimethylbutyl) -N' -phenyl-p-phenylenediamine, in an amount of, for example, 2 parts by weight.
The processing aid is an additive capable of improving production operation efficiency and processing performance, for example, the processing aid AktiplastPP is a mixture of unsaturated fatty acid zinc soap and a dispersing agent, and can play a role in improving dispersibility, fluidity, demolding performance and the like.
In the formulation of the nailing-free tire tread in the embodiment of the invention, 2-10 PHR glass flakes, preferably 5PHR glass flakes are added, and because the glass flakes do not participate in chemical reaction in the rubber composition, when the tire is used, the tread can form fine concave-convex shapes, so that the contact area of the ice and snow ground can be increased, the friction force of the ice and snow ground can be increased, the ground gripping performance of the tire can be improved, and the braking distance can be shortened.
The glass flakes used in the embodiment of the invention are inert non-reinforced additives, are different from nano-sized reinforced fillers, are micron-sized additives, such as 5-10 mu m glass fragments, and can also be particles, are prepared from molten medium alkali glass at the temperature of more than 1200 ℃ through the process steps of bubbling, crushing, cooling, screening, grinding and the like, and have high cohesive force and ageing resistance. In the rubber composition, the glass scales do not participate in chemical reaction, can form nano-scale aggregates with carbon smoke and crude rubber in a microscopic view, and are adsorbed on the surface of a tire in a macroscopic view when the tire is used, so that the tire can firmly grasp ice and snow road surfaces, break water films and increase the grip force just like a small rivet is arranged on the tire tread.
In the present invention, the rubber composition comprises: 0.4 to 2.5 weight portions of vulcanization accelerator and 1.5 to 3 weight portions of sulfur-adding agent. In a specific embodiment of the present invention, the sulfur-adding agent is sulfur, and the vulcanization accelerator includes: 0.1 to 0.5 part by weight of accelerator DPG (diphenyl guanidine) and 1 to 2 parts by weight of accelerator TBBS (N-tert-butyl-2-benzothiazole sulfonamide).
The preparation method of the rubber composition provided by the embodiment of the invention specifically comprises the following steps:
preparing a master batch by primary mixing: sequentially adding the crude rubber such as natural rubber, the carbon black, the white carbon black, the zinc oxide, the stearic acid, the aromatic hydrocarbon oil, the anti-aging agent and the glass flakes into a Banbury mixer, carrying out banburying at 130 ℃ for 120 seconds, and discharging rubber at 160 ℃;
final mix preparation of final mix: the obtained master batch, sulfur, an accelerator and the like are added into an internal mixer, and the mixture can be discharged after being mixed for 120 seconds at 105 ℃ to obtain the rubber composition.
The vulcanization condition of the rubber composition is as follows: the resulting mixture was heated at 160 ℃ for 20 minutes to prepare a physical test piece.
Embodiments of the present invention also provide a tire, wherein the vulcanized rubber of the rubber composition is a tread, which is a nailless tire. Brake test verification is carried out on the tire test site in winter, and the snow tire product has good snow and ice ground gripping performance. Performance on ice and snow: it is characterized by E '-30 ℃ of the viscoelastic test of the semi-finished product and the braking distance d of the real vehicle test (the smaller the E' -30 ℃ and the d, the better).
For further understanding of the present application, the following specifically describes the rubber composition and tire provided by the present application for improving the performance of the tire on ice and snow with reference to examples. It should be understood, however, that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the following examples.
The examples do not specify particular techniques or conditions, and are performed according to techniques or conditions described in literature in the art or according to the product specification. The reagents or instruments used are not indicated by manufacturers, and are all conventional products available on the market.
Example 1
According to the formula shown in the table 1, the raw rubber such as natural rubber, carbon black, white carbon black, stearic acid, aromatic oil, an anti-aging agent and glass flakes are sequentially added into a Banbury mixer, mixed for 120 seconds at 130 ℃, and discharged at 160 ℃;
the obtained master batch, sulfur, an accelerator and the like were added to an internal mixer, and mixed at 105 ℃ for 120 seconds and then discharged to obtain a rubber composition.
FIG. 1 is an SEM image of the same formulation of example 1 without the addition of glass flakes; FIG. 2 is a graph showing the dispersion of glass flakes in the size of example 1. In the rubber composition, the glass flakes do not participate in chemical reaction, can form nano-scale aggregates with carbon smoke and crude rubber in a microscopic view, and are adsorbed on the surface of a tire in a macroscopic view during the use of the tire, so that the tire can firmly grasp ice and snow road surfaces, break a water film and increase the grip force.
Examples 2 to 3
According to the formulation of Table 1, a compound was prepared according to the procedure of example 1.
Comparative example
A compound was prepared according to the recipe of Table 1, following the procedure of example 1.
TABLE 1 formulation of rubber composition in examples of the present invention (in parts by weight)
Note:
the natural rubber is RSS #3, and the manufacturer is high and deep;
the butadiene rubber is BR9000. The manufacturer is a Yangzi petrochemical company;
the styrene-butadiene RUBBER is SL553, and the manufacturer is PHU RIENG RUBBER;
the carbon black 1 is super-resistant high-elongation medium-super-wear-resistant furnace black SAF, and the manufacturer is Shanghai Kabot corporation;
white carbon black 1165MP, solvay Fine chemical Co;
TDAE is environment-friendly aromatic oil VIVATEC 500, and the manufacturer is H & R GROUP;
the activator is inorganic activator ZnO, and the manufacturer is Liu Chang chemical industry company;
stearic acid octadecanoic acid SA, the manufacturer is Fengyi grease company;
the protective wax is okerin2122H, and the manufacturer is EASTMAN;
microcrystalline paraffin RD, manufactured by Shunhua chemical Co., ltd.;
the processing aid is AktiplastPP, and the manufacturer is Rhine chemistry;
the old defense agent is 6PPD, and the manufacturer is parameter (Suzhou);
the sulfur is SS200-5, and the manufacturer is Jinghai chemical company;
accelerator 1 was DPG, manufactured by Shandong Shunhun chemical Co., ltd;
accelerator 2 was TBBS, a product of Shandong Shunhong chemical industry.
The performance of the rubber composition of the embodiment of the invention is as follows:
TABLE 2 Performance Table
| Performance of | Comparative example | Example 1 | Example 2 | Example 3 |
| Hardness HS (JISA) | 49 | 50 | 51 | 51 |
| Worn lambourn | 100％ | 97％ | 96％ | 94％ |
| Tan0 ℃ of wetland | 100％ | 105％ | 108％ | 112％ |
| Rolling resistance Tan60 deg.C | 100％ | 99％ | 99％ | 97％ |
| Winter performance E' -30 DEG C | 100％ | 100％ | 102％ | 105％ |
| Ice ground brake | 100％ | 101％ | 104％ | 109％ |
| Snow brake | 100％ | 100％ | 102％ | 104％ |
In Table 2, the performance results such as abrasion in comparative examples are shown by an index, and the larger the index is, the better the performance is.
The performance test method is as follows:
1. the hardness was measured manually at 23 ℃ on dumbbell-shaped test pieces made of the rubber compositions of comparative examples and examples using a Bareiss (digitest) JIS type A durometer.
2. Vulcanization conditions of composition test pieces: the test was conducted by heating at 160 ℃ for 20 minutes to cure the composition into various test pieces of different sizes.
Lambourn abrasion test an experiment was carried out using UESHIMA manufacturer AB-1152 abrasion equipment, test conditions: the speed is 100m/min, the angle is 5 percent, the load is 20N, and the time is 30min. Specific test values (g) for abrasion of comparative examples and examples 1 to 3: 0.142, 0.146, 0.148, 0.151.
3. The test pieces (thickness 2. + -. 0.2 mm) made of the rubber compositions of comparative examples and examples were measured for tan. Delta. (0 ℃ C.) at a temperature of 0 ℃ C. Under a condition of a maximum strain of 0.2% and a frequency of 10Hz using a viscoelastic tester model No. VR7110 manufactured by UESHIMA, and this value represents wet grip performance, and the higher the value, the better the performance. The test pieces (thickness 2. + -. 0.2 mm) made of the rubber compositions of the comparative examples and examples were measured for tan. Delta. (60 ℃ C.) at a temperature of 60 ℃ and represented rolling resistance properties as a value, the lower the value, the better the properties. The E '(-30 ℃) of test pieces (thickness 2. + -. 0.2 mm) made of the rubber compositions of the comparative examples and examples was measured at a temperature of-30 ℃ and represented winter properties, the lower the value, the better the properties (E' (-30 ℃) is the modulus of elasticity in the viscoelastic data at-30 ℃ and also characterizes the rigidity of the tire at low temperature, the specific test values of the modulus of elasticity for the comparative examples, examples 1-3: 16.74, 16.75, 16.40, 15.90).
4. Braking on ice and snow fields: the method is carried out in a winter tire testing field, brake testing is verified, the brake distance of 80 → 2Km/h is tested under the same test condition, and the smaller the brake distance is, the better the performance of the ice and snow ground is represented.
From the above examples, the tread formula composition of the invention can increase the contact area of the road surface on the ice and snow land, improve the ground gripping performance and shorten the braking distance. Meanwhile, the applied tire is a nailing-free tire, which is beneficial to vehicle comfort and the like.
The above description is only a preferred embodiment of the present invention, and it should be noted that various modifications to the embodiments can be implemented by those skilled in the art without departing from the technical principle of the present invention, and these modifications should also be construed as the scope of the present invention to be protected.
Claims (7)
1. A rubber composition for improving performances of tires in ice and snow areas comprises the following components:
100 parts by weight of a rubber component;
23 to 25 parts by weight of carbon black;
32-35 parts by weight of white carbon black;
33 to 35 parts by weight of an aromatic oil;
2-5 parts by weight of an active agent;
2-6 parts by weight of a defense component;
1-2 parts by weight of a processing aid;
2-10 parts by weight of glass flakes;
1.5-3 parts by weight of a sulfur-adding agent;
0.4 to 2.5 parts by weight of a vulcanization accelerator;
the rubber component consists of 60 to 70 weight percent of natural rubber, 10 to 20 weight percent of butadiene rubber and 15 to 25 weight percent of styrene-butadiene rubber; the butadiene rubber is BR9000, and the cis-butadiene structure is more than 96%; the carbon black is super-resistant high-ductility medium-super wear-resistant furnace black SAF; the active agents include: 2-5 parts of zinc oxide and 1-3 parts of stearic acid; the defense components comprise: 1-2 parts of anti-aging agent, 1-2 parts of protective wax and 1-2 parts of microcrystalline wax; the processing aid is a mixture of unsaturated fatty acid zinc soap and a dispersing agent.
2. The rubber composition of claim 1, wherein the natural rubber is smoked sheet rubber #3.
3. The rubber composition according to claim 2, wherein the rubber component is composed of 65 parts by weight of natural rubber, 15 parts by weight of butadiene rubber and 20 parts by weight of styrene-butadiene rubber.
4. A rubber composition according to any one of claims 1-3, wherein the glass flakes are micron-sized inert non-reinforcing material.
5. The rubber composition according to claim 4, wherein the rubber composition comprises 4 to 6 parts by weight of glass flakes.
6. A rubber composition according to any one of claims 1 to 3, wherein the sulfur-adding agent is sulfur, and the vulcanization accelerator comprises: 0.1 to 0.5 weight portion of accelerator DPG and 1 to 2 weight portions of accelerator TBBS.
7. A tire tread comprising a vulcanizate of the rubber composition of any of claims 1 to 6.
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| CN103804728B (en) * | 2013-11-25 | 2016-03-02 | 山东龙跃橡胶有限公司 | A kind of half steel car snow tyre tread rubber combination |
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