CN114437423A - Rubber composition for reducing extruded bubbles of semi-finished product and application - Google Patents
Rubber composition for reducing extruded bubbles of semi-finished product and application Download PDFInfo
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 84
- 239000005060 rubber Substances 0.000 title claims abstract description 84
- 239000000203 mixture Substances 0.000 title claims abstract description 47
- 239000011265 semifinished product Substances 0.000 title abstract description 34
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 30
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 16
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- 239000003795 chemical substances by application Substances 0.000 claims description 23
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- 238000004519 manufacturing process Methods 0.000 claims description 7
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- 239000011787 zinc oxide Substances 0.000 claims description 3
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- 238000002156 mixing Methods 0.000 description 10
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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 3
- 239000004215 Carbon black (E152) Substances 0.000 description 3
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- ZNRLMGFXSPUZNR-UHFFFAOYSA-N 2,2,4-trimethyl-1h-quinoline Chemical compound C1=CC=C2C(C)=CC(C)(C)NC2=C1 ZNRLMGFXSPUZNR-UHFFFAOYSA-N 0.000 description 2
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
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- STSDHUBQQWBRBH-UHFFFAOYSA-N n-cyclohexyl-1,3-benzothiazole-2-sulfonamide Chemical compound N=1C2=CC=CC=C2SC=1S(=O)(=O)NC1CCCCC1 STSDHUBQQWBRBH-UHFFFAOYSA-N 0.000 description 1
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Images
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- 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
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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 application provides a rubber composition for reducing bubbles extruded from a semi-finished product and application thereof, wherein the rubber composition comprises the following components in percentage by weight: a rubber component of 100 PHR; 20-200 PHR of precipitation-process silica; 5 to 45PHR of reinforcing carbon black; 0.1-3 PHR of polyethylene glycol 4000; 0.1-5 PHR of an aromatic oil; the rubber component comprises 5-60 PHR butadiene rubber and 2-70 PHR styrene butadiene rubber; the reinforcing carbon black has a DBP oil absorption of 115.0 to 135.0ml/100 g. Under the condition of ensuring that the basic performance of the tire is not changed, the polyethylene glycol 4000 used in the invention can improve the vulcanization speed and the crosslinking density, has good intermiscibility with other rubber materials, has excellent lubricity, moisture retention and dispersibility, particularly greatly reduces bubbles of semi-finished products in the extrusion process of the semi-finished products, and is beneficial to application.
Description
Technical Field
The application relates to the technical field of tires, in particular to a rubber composition for reducing bubbles extruded from a semi-finished product and application thereof.
Background
In the production of tires, extrusion is an important step, which is to produce the rubber compound by an extruder into tire rubber semi-finished products or semi-finished parts. After the rubber compound for the tire enters a tire tread double-compound screw extruder, the rubber compound reaches a machine head through screw kneading and extrusion, and the temperature of the rubber compound can reach 90-140 ℃; the pressure of the machine head is usually over 5MPa, under the condition, the white carbon black in the general rubber compound reacts with the coupling agent to generate alcohol and water, and the existing trace volatile (such as water) can form overheated liquid drops. After the sizing material passes through the machine head, the pressure is suddenly reduced to normal pressure, the sizing material is dripped into steam through overheating, and air holes on the section of a semi-finished part are formed after the sizing material is cooled. In addition, the air taken into the extruder and the air adsorbed by the carbon black are not discharged in time, and the porosity of the intermediate product is also increased.
The porosity, also called porosity, is a measure of the porosity or degree of densification of the semi-finished product. Practice shows that compared with the size of a semi-finished product extruded by filling high-wear-resistance carbon black rubber compound, the semi-finished product filled with super-wear-resistance carbon black and medium-super-wear-resistance carbon black and the semi-finished product filled with high-white carbon black have higher section porosity and unstable size, and the rejection rate of the semi-finished product and the production cost of enterprises are increased.
At present, the process means is adopted to reduce the porosity of the rubber compound, and the main measures include hot feeding, shortening of the parking time, guarantee of the feeding amount, reduction of air entrainment and the like. The main principle is that the porosity of the rubber compound is reduced by reducing the volatile components in the rubber compound, but trace volatile components still cause pores on the section of a semi-finished product, and the measures still cannot effectively reduce the porosity of the rubber compound particularly for the rubber compound of ultra-wear-resistant and medium-ultra-wear-resistant carbon black filler.
Disclosure of Invention
In view of this, the present application provides a rubber composition for reducing bubbles generated during extrusion of a semi-finished product and an application thereof.
The present application provides a rubber composition for reducing outgassed bubbles from a semi-finished product, the rubber composition comprising:
a rubber component of 100 PHR;
20-200 PHR of precipitation-process silica;
5 to 45PHR of reinforcing carbon black;
0.1-3 PHR of polyethylene glycol 4000;
0.1-5 PHR of an aromatic oil;
the rubber component comprises 5-60 PHR butadiene rubber and 2-70 PHR styrene butadiene rubber;
the reinforcing carbon black has a DBP oil absorption of 115.0 to 135.0ml/100 g.
Preferably, the styrene butadiene rubber consists of medium styrene content SBR and low styrene content SBR; the St% content of the SBR with the medium styrene content is 20-30%; the St% content of the low styrene content SBR is 10-15%.
Preferably, the BET specific surface area of the precipitated silica is 80-90 m2(iv) a pH value of 5.7 to 7.3.
Preferably, the rubber composition comprises a coupling agent, petroleum resin, an active agent, a defense component, an accelerator and a sulfur adding agent.
Preferably, the active agents include zinc oxide and stearic acid.
Preferably, the anti-aging component comprises physical protection wax and a chemical protective agent, and the chemical protective agent consists of age resister 6PPD and age resister RD.
Preferably, the accelerator comprises one or more of a thiazole accelerator and a guanidine accelerator.
Preferably, the sulfur adding agent is sulfur powder containing 5% of oil.
Preferably, the rubber composition comprises: 1-5 PHR coupling agent, 1-5 PHR petroleum resin, 1-5 PHR activator, 2-6 PHR old protection component, 2-4 PHR accelerant and 1-4 PHR sulfur adding agent.
The present invention provides the use of a rubber composition as described hereinbefore as a semi-finished product in the manufacture of a tire.
In the prior art, compared with the size of a semi-finished product extruded from a rubber compound filled with high-wear-resistance carbon black, the semi-finished product filled with super-wear-resistance carbon black and medium-super-wear-resistance carbon black and a semi-finished product filled with high-white carbon black have higher section porosity and unstable size.
Compared with the prior art, the rubber composition provided by the invention is used for reducing bubbles extruded from a semi-finished product, and comprises 20-200 PHR of precipitated silica and 5-45 PHR of reinforcing carbon black based on 100PHR rubber components, wherein the DBP oil absorption value of the reinforcing carbon black is 115.0-135.0ml/100 g; the rubber component comprises 5-60 PHR butadiene rubber and 2-70 PHR butadiene styrene rubber, and 0.1-3 PHR polyethylene glycol 4000 and 0.1-5 PHR aromatic oil are introduced. Under the condition of ensuring that the basic performance of the tire is not changed, the polyethylene glycol 4000 used in the invention can improve the vulcanization speed and the crosslinking density, has good intermiscibility with other rubber materials, has excellent lubricity, moisture retention and dispersibility, and particularly greatly reduces bubbles of a semi-finished product in the extrusion process of the semi-finished product.
Drawings
FIG. 1 is a graph showing the results of porosity tests of examples of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. 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 application.
The present application provides a rubber composition for reducing outgassed bubbles from a semi-finished product, the rubber composition comprising:
a rubber component of 100 PHR;
20-200 PHR of precipitation-process silica;
5 to 45PHR of reinforcing carbon black;
0.1-3 PHR of polyethylene glycol 4000;
0.1-5 PHR of an aromatic oil;
the rubber component comprises 5-60 PHR butadiene rubber and 2-70 PHR styrene butadiene rubber;
the reinforcing carbon black has a DBP oil absorption of 115.0 to 135.0ml/100 g.
The rubber composition provided by the invention can greatly reduce bubbles of the semi-finished product in the extrusion process of the semi-finished product, and is beneficial to application.
In the present invention, PHR refers to the number of parts added per hundred parts of rubber. The rubber composition takes 100PHR rubber components as a matrix, and the rubber components comprise 5-60 PHR butadiene rubber and 2-70 PHR butadiene styrene rubber. The preferable range of the butadiene rubber is 30-58 PHR, and the preferable range of the styrene-butadiene rubber is 3-60 PHR.
The cis-butadiene rubber is short for cis-1, 4-polybutadiene rubber, and the cis-structure content is more than 95 percent; abbreviated in english as BR. The industrial production of butadiene rubber adopts a solution polymerization method, and the raw materials mainly comprise monomer butadiene and solvent, and commonly used solvents of aliphatic hydrocarbon, alicyclic hydrocarbon, aromatic hydrocarbon and mixed hydrocarbon; the auxiliary raw materials comprise a catalyst, an anti-aging agent, a dispersing agent and the like. The butadiene rubber has the characteristics of high elasticity, good wear resistance, dynamic performance and the like, but has high cold flow property and slightly poor processability. The embodiment of the invention adopts the commercial product of butadiene rubber, such as BR9000 brand of the Yangzhining; appearance of BR 9000: colorless and transparent, the content of volatile matters is 0.5 percent at most, the content of ash is 0.2 percent at most, and the Mooney viscosity is 39-47 mPa & s.
Styrene butadiene rubber is abbreviated as SBR (styrene butadiene rubber), and can be divided into emulsion styrene butadiene rubber and solution-polymerized styrene butadiene rubber according to a synthesis method, wherein the solution-polymerized styrene butadiene rubber has advantages on wear resistance, skid resistance and the like of tires; solution polymerized styrene-butadiene rubber is a random copolymer of butadiene and styrene (St) formed by solution polymerization in a hydrocarbon solvent, and commercially available products thereof, such as SBR1723, are used in the examples of the present invention.
In a preferred embodiment of the invention, the styrene-butadiene rubber consists of SBR with medium styrene content and SBR with low styrene content; the proportion of the two is not particularly limited. The St% content of the SBR with the styrene content is 20-30%, preferably 22.5-24.5%, and the Vinl% content can be 18.0%. The St% content of the low styrene content SBR is 10-15%, preferably 10-12%; the concrete content is that the St% content is 10.0%, and the Vinl% content is 39.0%.
The rubber composition of the present invention contains a rubber reinforcing filler per 100 parts by massA rubber component comprising, in a rubber composition: 20-200 PHR of precipitated silica and 5-45 PHR of reinforcing carbon black. Specifically, the precipitated silica (commonly called white carbon black) has a BET specific surface area of 80-90 m2The pH value is 5.7-7.3, and a commercially available product is adopted; the addition amount may further be 40 to 150PHR, etc.
In the embodiment of the invention, the reinforcing carbon black is formed by burning tower bottom oil in a reaction furnace; the carbon black is of the type N-234, and has a DBP (dibutyl phthalate) oil absorption value: 115.0-135.0ml/100g, iodine absorption number: 114-124.0 mg I2/g。
In the invention, the rubber composition comprises 0.1-3 PHR of polyethylene glycol 4000, preferably 0.3-2.6 PHR, and more preferably 0.5-2.5 PHR. The embodiment of the invention adopts the PEG4000 with high activity produced by combining a unique synthesis process with a reaction kettle of advanced production equipment in the world, and specifically adopts the reaction of ethylene glycol or diethylene glycol and ethylene oxide, sodium hydroxide as a catalyst, and acid is added for neutralization after the reaction is finished to obtain the polyethylene glycol PEG 4000.
The polyethylene glycol PEG4000 used in the invention has excellent lubricity, moisture retention and dispersibility, is in a solid sheet shape, is convenient to add and process, is not easy to separate out, and neutralizes polymers with molecular weight; the rubber material has good intermiscibility with other rubber materials, the filler is mainly neutralized in a rubber system, the water volatilization amount in the rubber material and the compactness of the rubber material are effectively reduced during extrusion, the flowability of the rubber material is improved, and the section air holes are effectively reduced during extrusion of semi-finished products. According to the formula of the rubber composition disclosed by the invention, under the condition of ensuring that the basic performance of the tire is not changed, the PEG4000 can be used as an active component to improve the vulcanization speed and the crosslinking density, and particularly, bubbles of a semi-finished product are greatly reduced in the extrusion process of the semi-finished product.
In the present invention, the vulcanization rate: the constant of the vulcanization chemical crosslinking reaction speed is used for expressing the speed index of the rubber material vulcanization reaction speed. Crosslinking density: also referred to as "degree of crosslinking," the fraction of structural units that are crosslinked to the total structural units.
Meanwhile, the rubber composition of the invention contains 0.1 to EThe aromatic oil of 5PHR is preferably 1 to 4.5PHR, more preferably 1.5 to 4.3 PHR. The aromatic oil is mainly used as processing oil, and the VIVATEC 500 product (H) is preferably adopted&R GROUP), specific gravity of 0.93-0.98 (density of purified water (1 g/cm)3) Ratio, no unit), flash point: min (minimum) at 210 ℃, kinematic viscosity (100 ℃) of 15.0-25.0 seconds, and minimum content of carbon structure of 25 wt%. When the proportion of each component is in the range, the invention can keep the original performance not to be weakened, and the porosity is obviously reduced during extrusion, thereby ensuring the qualification rate of semi-finished products.
In an embodiment of the present invention, the rubber composition for reducing bubbles extruded from a semi-finished product comprises: coupling agent, petroleum resin, activating agent, ageing-preventive component, accelerating agent and sulfur-adding agent. Preferably, the rubber composition comprises: 1-5 PHR coupling agent, 1-5 PHR petroleum resin, 1-5 PHR activator, 2-6 PHR old protection component, 2-4 PHR accelerant and 1-4 PHR sulfur adding agent.
Specifically, the coupling agent is preferably a silane coupling agent, including but not limited to Si-69. The petroleum resin mainly plays a role in tackifying and can adopt a commercial product OPPERA 373N (manufactured by Tonen General).
In a preferred embodiment of the invention, the active agent comprises zinc oxide (ZnO) and stearic acid, which may be present in a mass ratio of 1: 1. The anti-aging component preferably comprises physical protective wax and a chemical protective agent, wherein the chemical protective agent consists of an anti-aging agent 6PPD and an anti-aging agent RD, and is preferably compounded for use. Antioxidant 6PPD with the Chinese name of N- (1, 3-dimethylbutyl) -N' -phenyl-p-phenylenediamine; the antioxidant RD is also called antioxidant RD and antioxidant 224, and is also called 2,2, 4-trimethyl-1, 2-dihydroquinoline polymer in Chinese.
In a preferred embodiment of the invention, the accelerator comprises one or more of thiazole accelerator and guanidine accelerator, preferably 0.5-1 PHR accelerator CBS and 0.5-1 PHR accelerator DPG. The accelerator CBS is N-cyclohexyl-2-benzothiazole sulfonamide, the accelerator DPG is abbreviated as accelerator D, and the Chinese name is diphenyl guanidine. In addition, the sulfur adding agent (also called as vulcanizing agent) is sulfur powder with oil content of 5%, and the dosage of the sulfur adding agent can be 1.5-3.5 PHR.
The experimental process for preparing the semi-finished product comprises the following steps: the compositions adopt a step-by-step mixing mode; wherein, the accelerant and the sulfur adding agent are added in the final stage, and the rest are added in the stages of primary mixing and remixing. Further, kneading may be carried out using a kneader produced by HF.
The specific process is as follows:
a primary mixing stage: adding the raw rubber, the reinforcing filler, the coupling agent, the processing oil, the petroleum resin and the processing aid in proportion, wherein the constant temperature is preferably 145-155 ℃, and the constant temperature time is preferably 90-200 seconds.
And a re-mixing stage: the anti-aging agent, the activator and the like are added in proportion, and the mixing temperature is preferably 145-160 ℃.
And finally, mixing: adding accelerator and vulcanizing agent, and preferably mixing at 95-105 ℃.
Through performance tests, the polyethylene glycol PEG4000 is effectively combined with other materials by utilizing the characteristics of lubricity, moisture retention and dispersibility, so that the porosity in extrusion can be reduced under the condition of ensuring the performance, and the qualification rate of semi-finished products is ensured. Embodiments of the present invention also provide for the use of a rubber composition as described hereinbefore as a semi-product in the manufacture of a tire.
In order to better understand the technical content of the invention, specific examples are provided below to further illustrate the invention. In the following examples, the starting materials used are commercially available products. Unless otherwise specified, all are mass ratios.
Example 1:
according to the formula shown in Table 1, the crude rubber, the reinforcing filler, the coupling agent, the processing oil, the petroleum resin and the processing aid are added in proportion, the constant temperature in the primary mixing stage is 145-155 ℃, and the constant temperature time is 160 seconds.
Then adding the anti-aging agent, the activator and the like in proportion, wherein the mixing temperature is 150 ℃ and 160 ℃.
Finally, adding an accelerant and a vulcanizing agent, and mixing at the temperature of 95-105 ℃; the rubber composition was obtained by stepwise kneading using the above-mentioned kneader produced by HF.
Examples 2 to 6
The compositions were each obtained according to the formulation of table 1 following the experimental procedure of example 1.
Comparative example
Following the experimental procedure of example 1, rubber compositions were obtained according to the formulation of Table 1.
Table 1 formulation table of the embodiment of the present invention
Note: "←" indicates the same as the aforementioned PHR.
The butadiene rubber is BR9000, and the manufacturer is Yangzi petrochemical company;
the styrene butadiene rubber 1 is SBR1723, and the manufacturer is Shenhua chemical company;
the styrene-butadiene rubber 2 is SL553, St percent is 10 percent, and the manufacturer is JSR Thailand;
the styrene butadiene rubber 3 is SBR1502 and the manufacturer is JSR Thailand;
the white carbon black is 4000GR, and the manufacturer is a winning chemical company;
the carbon black is N-234, and the manufacturer is Shanghai Kabot corporation;
the coupling agent is Si-69, and the manufacturer is Yingchuansamixing company;
the processing oil is VIVATEC 500, and the manufacturer is H & R GROUP;
the petroleum resin is OPPERA 373N, the manufacturer is Tonen General, and the petroleum resin copolymerized by specially modified C5 and modified C9 has the wet skid resistance, the processing performance, the promotion and control performance and the softening point (84-95 ℃);
the sulfur adding agent is sulfur powder (containing 5 percent of oil), and the manufacturer is Anhui Jinghai chemical industry/Jiangxi Hengxing source company;
the anti-aging component 1 is physical protective wax OK2122H manufactured by Paramelt (Suzhou);
antioxidant 2 chemical protectant 6PPD & RD, manufactured by Shandong Shunhua chemical company;
the activator 1 is polyethylene glycol 4000, is in a solid sheet shape, and is produced by Chengdu New traffic science and technology company;
the activator 2 is ZnO, and the manufacturer is Shandong Shunhun chemical industry Co;
stearic acid is ST4981, the manufacturer is Fengyi grease company;
accelerator 1 is thiazole accelerator DELAC (CBS), manufactured by Shandong Shunhun chemical company;
accelerator 2 was guanidine Accelerator D (DPG), manufactured by Shandong Shunhun chemical Co.
The invention tests the performance of the rubber composition obtained in the above example, and the results are as follows:
TABLE 2 Properties of the compositions according to the examples of the invention
Note: m300 (stress at 300%): mpa;
EB (elongation): percent;
TB (breaking force): mpa;
HS (shore hardness): degree;
SG (specific gravity): no unit;
MH: the highest torque N · m (kgf · cm) to reach the plateau when the compound is vulcanized;
ts 1: the time from the start of the experiment to the time when the curve rises by 0.1N · m (kgf · cm) from the lowest torque.
Tc50, Tc 90: the time required for the sample to reach a certain vulcanization degree, namely the value of X is 0.5 when the sample torque reaches ML + X (MH-ML), namely TC 50; x is 0.9, namely TC 90).
The test method is as follows:
(1) basic physical properties: the method of International Standard ISO/DIS 37-1990 determination of tensile stress-strain Properties of vulcanized and thermoplastic rubbers was used.
(2) Vulcanization curve: alpha rotor-free vulkameter, electronic scale, tweezers, sample: 5-7 g of sizing material, and the test conditions are as follows: the driving air pressure is more than or equal to 0.5Mpa, and the measuring range comprises: scorch time, vulcanization temperature.
(3) Porosity: testing the density of the unvulcanized rubber by an Archimedes drainage method, and calculating the porosity according to the density change before and after rubber drying; the drying condition is that the mixture is placed in a drying oven at the constant temperature of 105 ℃ for 25min and then cooled to the room temperature; the porosity calculation formula is as follows: η ═ [ (ρ 0- ρ 1)/ρ 0] × 100%, where: rho 0 is the initial density of the sample, rho 1 is the density of the uncured rubber after treatment, and eta is the porosity.
According to table 2, the basic performance of the examples of the present application is not greatly different; the sulfur speed of the examples was slightly faster than that of the comparative examples. Results of porosity referring to fig. 1, it is shown in fig. 1 that the porosity of the example is lower than that of the comparative example, in which the porosity of example 4 is significantly lower, in the case of ensuring that the basic properties do not change much.
From the above examples, it can be seen that, under the condition of ensuring that the basic performance of the tire is not changed, the polyethylene glycol 4000 used in the present invention can increase the vulcanization speed and the crosslinking density, has good compatibility with other rubber materials, has excellent lubricity, moisture retention and dispersibility, and particularly greatly reduces the bubbles of the semi-finished product in the semi-finished product extrusion process, thereby being beneficial to application.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A rubber composition for reducing outgasing of bubbles from an intermediate product, wherein the rubber composition comprises:
a rubber component of 100 PHR;
20-200 PHR of precipitation-process silica;
5 to 45PHR of reinforcing carbon black;
0.1-3 PHR of polyethylene glycol 4000;
0.1-5 PHR of an aromatic oil;
the rubber component comprises 5-60 PHR butadiene rubber and 2-70 PHR styrene butadiene rubber;
the reinforcing carbon black has a DBP oil absorption of 115.0 to 135.0ml/100 g.
2. The rubber composition of claim 1, wherein the styrene butadiene rubber consists of a medium styrene content SBR and a low styrene content SBR; the St% content of the SBR with the medium styrene content is 20-30%; the St% content of the low styrene content SBR is 10-15%.
3. The rubber composition according to claim 1, wherein the precipitated silica has a BET specific surface area of 80 to 90m2(iv) a pH value of 5.7 to 7.3.
4. A rubber composition according to any one of claims 1 to 3, wherein a coupling agent, a petroleum resin, an activator, a weathering agent, an accelerator and a sulfur-adding agent are included in the rubber composition.
5. The rubber composition of claim 4, wherein the active agent comprises zinc oxide and stearic acid.
6. The rubber composition of claim 4, wherein the aged protection component comprises a physical protection wax and a chemical protection agent, and the chemical protection agent consists of age resister 6PPD and age resister RD.
7. The rubber composition of claim 4, wherein the accelerator comprises one or more of a thiazole accelerator and a guanidine accelerator.
8. The rubber composition of claim 4, wherein the sulfur-adding agent is 5% oil-containing sulfur powder.
9. The rubber composition according to claim 4, wherein the rubber composition comprises: 1-5 PHR coupling agent, 1-5 PHR petroleum resin, 1-5 PHR activator, 2-6 PHR old protection component, 2-4 PHR accelerant and 1-4 PHR sulfur adding agent.
10. Use of a rubber composition as claimed in any one of claims 1 to 9 as a semi-product in the manufacture of a tire.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0735085A1 (en) * | 1995-03-30 | 1996-10-02 | The Goodyear Tire & Rubber Company | Silica reinforced rubber composition and tire with tread |
| CN103703072A (en) * | 2011-07-22 | 2014-04-02 | 住友橡胶工业株式会社 | Rubber composition for tread, and pneumatic tire |
| US20180142087A1 (en) * | 2016-11-18 | 2018-05-24 | The Goodyear Tire & Rubber Company | Tire with tread for combination of low temperature performance and wet traction |
| CN111117022A (en) * | 2018-11-01 | 2020-05-08 | 中国石油化工股份有限公司 | Main rubber, rubber composition, vulcanized rubber, and preparation method and application of vulcanized rubber |
| CN111117021A (en) * | 2018-11-01 | 2020-05-08 | 中国石油化工股份有限公司 | Rubber composition based on solution-polymerized styrene-butadiene, vulcanized rubber, and preparation method and application thereof |
-
2022
- 2022-02-10 CN CN202210126424.7A patent/CN114437423A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0735085A1 (en) * | 1995-03-30 | 1996-10-02 | The Goodyear Tire & Rubber Company | Silica reinforced rubber composition and tire with tread |
| CN103703072A (en) * | 2011-07-22 | 2014-04-02 | 住友橡胶工业株式会社 | Rubber composition for tread, and pneumatic tire |
| US20180142087A1 (en) * | 2016-11-18 | 2018-05-24 | The Goodyear Tire & Rubber Company | Tire with tread for combination of low temperature performance and wet traction |
| CN111117022A (en) * | 2018-11-01 | 2020-05-08 | 中国石油化工股份有限公司 | Main rubber, rubber composition, vulcanized rubber, and preparation method and application of vulcanized rubber |
| CN111117021A (en) * | 2018-11-01 | 2020-05-08 | 中国石油化工股份有限公司 | Rubber composition based on solution-polymerized styrene-butadiene, vulcanized rubber, and preparation method and application thereof |
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