CN112625309A - Sizing material composition, sizing material, preparation method of sizing material and tire - Google Patents
Sizing material composition, sizing material, preparation method of sizing material and tire Download PDFInfo
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- CN112625309A CN112625309A CN202011479685.4A CN202011479685A CN112625309A CN 112625309 A CN112625309 A CN 112625309A CN 202011479685 A CN202011479685 A CN 202011479685A CN 112625309 A CN112625309 A CN 112625309A
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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
- C08L7/00—Compositions of natural rubber
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- 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
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- 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
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Abstract
The application provides a sizing material composition, a sizing material, a preparation method of the sizing material and a tire, and belongs to the technical field of tire sizing materials. The sizing material composition comprises 100 parts by weight of natural rubber, 25-35 parts by weight of carbon black and 15-25 parts by weight of white carbon black. According to the rubber material, the natural rubber is used as raw rubber, so that the tensile strength and the processability of the rubber material are ensured, and the carbon black and the white carbon black with specific components are matched, so that the rubber material is endowed with higher tensile strength and tear strength, the abrasion resistance of the tire made of the rubber material is improved, and the rolling resistance coefficient of the tire made of the rubber material is reduced.
Description
Technical Field
The application relates to the technical field of tire rubber materials, in particular to a rubber material composition, a rubber material, a preparation method of the rubber material and a tire.
Background
A tire is a ground-rolling circular ring-shaped elastic rubber article mounted on various vehicles or machines. Generally mounted on a metal rim, and is capable of supporting a vehicle body, buffering external impact, achieving contact with a road surface and ensuring the driving performance of a vehicle. Tires are often used under complex and severe conditions, which are subjected to various deformations, loads, forces and high and low temperature effects during running, and therefore must have high load-bearing, traction and cushioning properties. At the same time, high abrasion resistance, and low rolling resistance and heat build-up are also required.
Under the background that low carbon, green and environmental protection become common consensus of the whole society, the automobile tire industry is actively adapting and guiding the trend and trend, and the requirement for high performance of tires is higher and higher. This requires that the balance of the "magic triangle" performance of the tire tread rubber must be significantly improved, that is, the tire tread rubber has good wet skid resistance, excellent wear resistance and low rolling resistance.
Disclosure of Invention
The application provides a sizing material composition, a sizing material, a preparation method of the sizing material and a tire.
The embodiment of the application is realized as follows:
in a first aspect, the present application provides, by way of example, a sizing composition comprising: 100 parts by weight of natural rubber, 25-35 parts by weight of carbon black and 15-25 parts by weight of white carbon black.
According to the technical scheme, the natural rubber is used as raw rubber, so that the tensile strength and the processing performance of rubber materials are guaranteed, and the carbon black and the white carbon black with specific components are matched, so that the rubber materials are endowed with higher tensile strength and tear strength, the abrasion resistance of the tire made of the rubber materials is improved, and the rolling resistance coefficient of the tire made of the rubber materials is reduced.
In a first possible example of the first aspect of the present application in combination with the first aspect, the above-mentioned sizing composition comprises: 100 parts by weight of natural rubber, 27-33 parts by weight of carbon black and 17-23 parts by weight of white carbon black.
In a first possible example of the first aspect of the present application in combination with the first aspect, the above-mentioned sizing composition comprises: 100 parts by weight of natural rubber, 30 parts by weight of carbon black and 20 parts by weight of white carbon black.
With reference to the first aspect, in a first possible example of the first aspect of the present application, the carbon black is N220 carbon black.
Optionally, the white carbon black is 955GR white carbon black.
In the above examples, the size composition includes 2 to 6 parts by weight of zinc oxide and 1 to 4 parts by weight of stearic acid.
In a first possible example of the first aspect of the present application in combination with the first aspect, the above-mentioned size composition includes 1 to 2 parts by weight of a vulcanizing agent and 1.5 to 2.5 parts by weight of a vulcanization accelerator.
In a first possible example of the first aspect of the present application in combination with the first aspect, the above-mentioned size composition includes 3 to 5 parts by weight of the silane coupling agent, 2 to 6 parts by weight of the anti-aging agent, 1 to 2 parts by weight of the microcrystalline wax, and 0.1 to 0.3 part by weight of the scorch retarder.
In a second aspect, the present application provides a method of preparing a compound, comprising: mixing 100 parts by weight of natural rubber, 16.7-23.3 parts by weight of carbon black, 2-5 parts by weight of zinc oxide and 7.5-8.5 parts by weight of white carbon black to prepare a first-stage master batch, mixing the first-stage master batch, 8.3-11.7 parts by weight of carbon black, 7.5-8.5 parts by weight of white carbon black, 1-4 parts by weight of stearic acid, 3-5 parts by weight of a silane coupling agent, 2-6 parts by weight of an anti-aging agent and 1-2 parts by weight of microcrystalline wax to prepare a second-stage master batch, recycling the second-stage master batch to prepare a third-stage master batch, and finally refining the third-stage master batch, 1-2 parts by weight of a vulcanizing agent, 1.5-2.5 parts by weight of a vulcanization accelerator and 0.1-0.3 part by weight of an.
In the technical scheme, the preparation method is simple and convenient, and the prepared rubber material is stable.
In a third aspect, the present application provides a compound, prepared by the above-described method of preparing a compound.
In the technical scheme, the tire prepared from the rubber material has better wear resistance and lower rolling resistance coefficient.
In a third aspect, the present application provides a tire having a tread vulcanized using the above compound.
In the technical scheme, the tire has better wear resistance and lower rolling resistance coefficient.
Detailed Description
Embodiments of the present application will be described in detail below with reference to examples, but those skilled in the art will appreciate that the following examples are only illustrative of the present application and should not be construed as limiting the scope of the present application. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The following detailed description is directed to a rubber composition, a rubber compound, a preparation method thereof, and a tire in the embodiments of the present application:
the present application provides a sizing composition comprising: 100 parts by weight of natural rubber, 25-35 parts by weight of carbon black and 15-25 parts by weight of white carbon black.
According to the rubber material, the natural rubber is used as raw rubber, so that the tensile strength and the processability of the rubber material are ensured, and the carbon black and the white carbon black with specific components are matched, so that the rubber material is endowed with higher tensile strength and tear strength, the abrasion resistance of the tire made of the rubber material is improved, and the rolling resistance coefficient of the tire made of the rubber material is reduced.
Optionally, the raw rubber of the rubber composition of the present application comprises only 100 parts by weight of natural rubber, and the filler of the rubber composition of the present application comprises only 25-35 parts by weight of carbon black and 15-25 parts by weight of white carbon black.
The raw rubber of the rubber material composition only contains natural rubber, and only the natural rubber is used as the raw rubber, so that the tensile strength of the prepared rubber material and the processing performance of the rubber material can be ensured.
The carbon black is N220 carbon black.
The N220 serving as high-reinforcement furnace carbon black has higher structural property and reinforcement property, so that the wear resistance of the rubber is improved, and the rubber is endowed with higher tensile strength and tear strength.
The white carbon black is 955GR white carbon black.
955GR white carbon black can greatly reduce the rolling resistance coefficient of the rubber material, and the problem of difficult dispersion processing caused by adding a large amount of white carbon black in the formula of the tire rubber material can be solved.
Optionally, the size composition comprises: 100 parts by weight of natural rubber, 27-33 parts by weight of carbon black and 17-23 parts by weight of white carbon black.
Optionally, the size composition comprises: 100 parts by weight of natural rubber, 30 parts by weight of carbon black and 20 parts by weight of white carbon black.
The sizing composition of the present application also includes a vulcanization activator that includes an oxidizing agent and stearic acid.
In the sizing composition of the present application, the vulcanization activator comprises 2 to 6 parts by weight of zinc oxide and 1 to 4 parts by weight of stearic acid.
Optionally, the vulcanization activator comprises 3 to 5 parts by weight of zinc oxide and 1.5 to 3 parts by weight of stearic acid.
Optionally, the vulcanization activator comprises 3-4 parts by weight of zinc oxide and 2-2.5 parts by weight of stearic acid.
The vulcanizing system adopted by the sizing composition is a vulcanizing agent and a vulcanization accelerator.
The vulcanizing agent comprises sulfur, and the vulcanization accelerator comprises an accelerator NS (N-tertiary butyl-2-benzothiazole sulfonamide).
The sizing material composition comprises 1-2 parts by weight of sulfur and 1.5-2.5 parts by weight of accelerator NS.
Optionally, the sizing composition comprises 1-1.5 parts by weight of sulfur and 1.5-2 parts by weight of accelerator NS.
Optionally, the sizing composition comprises 1.1-1.4 parts by weight of sulfur and 1.6-1.9 parts by weight of accelerator NS.
The sizing composition of the present application also includes other adjuvants including silane coupling agents, anti-aging agents, microcrystalline waxes, and scorch retarders.
The silane coupling agent includes Si 69.
The antioxidant comprises antioxidant TMQ and antioxidant 6 PPD.
The scorch retarder includes the scorch retarder CTP.
The sizing material composition further comprises 3-5 parts by weight of Si69, 1-3 parts by weight of an anti-aging agent TMQ, 1-3 parts by weight of anti-aging agent 6PPD, 1-2 parts by weight of microcrystalline wax and 0.1-0.3 part by weight of an anti-scorching agent CTP.
Optionally, the sizing material composition further comprises 3.5-5 parts by weight of Si69, 1-2.5 parts by weight of an anti-aging agent TMQ, 1-2.5 parts by weight of anti-aging agent 6PPD, 1-2 parts by weight of microcrystalline wax and 0.1-0.3 part by weight of anti-scorching agent CTP.
Optionally, the sizing material composition further comprises 3.5-4.5 parts by weight of Si69, 1-2 parts by weight of antioxidant TMQ, 1-2 parts by weight of antioxidant 6PPD, 1-2 parts by weight of microcrystalline wax and 0.2 part by weight of antiscorching agent CTP.
The sizing composition of the present application comprises: 100 parts of natural rubber, 25-35 parts of carbon black, 15-25 parts of white carbon black, 2-6 parts of zinc oxide, 1-4 parts of stearic acid, 1-2 parts of sulfur, 1.5-2.5 parts of accelerator NS, 3-5 parts of Si69, 1-3 parts of antioxidant TMQ, 1-3 parts of antioxidant 6PPD, 1-2 parts of microcrystalline wax and 0.1-0.3 part of antiscorching agent CTP.
Alternatively, the sizing composition of the present application comprises: 100 parts by weight of natural rubber, 27-33 parts by weight of carbon black, 17-23 parts by weight of white carbon black, 3-5 parts by weight of zinc oxide, 1.5-3 parts by weight of stearic acid, 1-1.5 parts by weight of sulfur, 1.5-2 parts by weight of accelerator NS, 3.5-5 parts by weight of Si69, 1-2.5 parts by weight of antioxidant TMQ, 1-2.5 parts by weight of antioxidant 6PPD, 1-2 parts by weight of microcrystalline wax and 0.1-0.3 part by weight of antiscorching agent CTP.
Alternatively, the sizing composition of the present application comprises: 100 parts of natural rubber, 30 parts of carbon black, 20 parts of white carbon black, 3-4 parts of zinc oxide, 2-2.5 parts of stearic acid, 1.1-1.4 parts of sulfur, 1.6-1.9 parts of accelerator NS, 3.5-4.5 parts of Si69, 1-2 parts of antioxidant TMQ, 1-2 parts of antioxidant 6PPD, 1-2 parts of microcrystalline wax and 0.2 part of antiscorching agent CTP.
Optionally, the sizing composition of the application consists of 100 parts by weight of natural rubber, 30 parts by weight of carbon black, 20 parts by weight of white carbon black, 3-4 parts by weight of zinc oxide, 2-2.5 parts by weight of stearic acid, 1.1-1.4 parts by weight of sulfur, 1.6-1.9 parts by weight of accelerator NS, 3.5-4.5 parts by weight of Si69, 1-2 parts by weight of antioxidant TMQ, 1-2 parts by weight of antioxidant 6PPD, 1-2 parts by weight of microcrystalline wax and 0.2 part by weight of antiscorching CTP.
The application also provides a method for preparing a sizing material, which comprises the following steps: mixing 100 parts by weight of natural rubber, 16.7-23.3 parts by weight of carbon black, 2-5 parts by weight of zinc oxide and 7.5-8.5 parts by weight of white carbon black to prepare a first-stage master batch, mixing the first-stage master batch, 8.3-11.7 parts by weight of carbon black, 7.5-8.5 parts by weight of white carbon black, 1-4 parts by weight of stearic acid, 3-5 parts by weight of a silane coupling agent, 2-6 parts by weight of an anti-aging agent and 1-2 parts by weight of microcrystalline wax to prepare a second-stage master batch, recycling the second-stage master batch to prepare a third-stage master batch, and finally refining the third-stage master batch, 1-2 parts by weight of a vulcanizing agent, 1.5-2.5 parts by weight of a vulcanization accelerator and 0.1-0.3 part by weight of an.
Wherein, the raw materials of the first-stage mixed material comprise: 100 parts by weight of natural rubber, 2-5 parts by weight of zinc oxide, two thirds of carbon black (16.7-23.3 parts by weight) and one half of white carbon black (7.5-8.5 parts by weight).
The procedure for one stage of mixing is shown in table 1:
TABLE 1A mixing Process
The raw materials of the second-stage mixed material comprise: the prepared primary masterbatch, one third of carbon black (8.3-11.7 parts by weight), one half of white carbon black (7.5-8.5 parts by weight), 1-4 parts by weight of stearic acid, 3-5 parts by weight of silane coupling agent, 2-6 parts by weight of anti-aging agent and 1-2 parts by weight of microcrystalline wax.
The two-stage mixing process is shown in table 2:
TABLE 2 two-stage mixing Process
The raw materials of the three-stage mixing material comprise: and (5) preparing the two-stage masterbatch.
The three-stage mixing process is shown in table 3:
TABLE 3 three-stage refining Process
The four-stage mixing material comprises the following raw materials: the three-section masterbatch is prepared from 1-2 parts by weight of a vulcanizing agent, 1.5-2.5 parts by weight of a vulcanization accelerator and 0.1-0.3 part by weight of an anti-scorching agent.
The four-stage mixing process is shown in table 4:
TABLE 4 four-stage mixing Process
It should be noted that each piece of gum material must be left at room temperature for more than 8 hours before proceeding to the next step. For example, after completion of the first-stage kneading, the obtained first-stage masterbatch needs to be left at room temperature for 8 hours before the second-stage kneading is carried out.
The preparation method of the rubber material is simple and convenient, and the stable rubber material can be prepared without a special banburying method.
The application also provides a rubber material prepared according to the preparation method of the rubber material.
The tire prepared by the rubber material has better wear resistance and lower rolling resistance coefficient.
The application also provides a tire, and the tire tread of the tire is prepared by vulcanizing the rubber material.
The tire has better wear resistance and lower rolling resistance coefficient.
A further detailed description of the present application of a gum composition, a gum stock, a method of making the same, and a tire is provided below in conjunction with the examples.
Example 1
The embodiment of the application provides a sizing composition, which consists of 100 parts by weight of TSR9710 natural rubber, 30 parts by weight of N220 carbon black, 20 parts by weight of 955GR white carbon black, 3.5 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 1.26 parts by weight of sulfur, 1.8 parts by weight of accelerator NS, 4 parts by weight of Si69, 1 part by weight of anti-aging agent TMQ, 2 parts by weight of anti-aging agent 6PPD, 1 part by weight of microcrystalline wax and 0.2 part by weight of anti-scorching agent CTP.
Example 2
The embodiment of the application provides a sizing composition, which consists of 100 parts by weight of TSR9710 natural rubber, 25 parts by weight of N220 carbon black, 15 parts by weight of 955GR white carbon black, 3.5 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 1.26 parts by weight of sulfur, 1.8 parts by weight of accelerator NS, 3 parts by weight of Si69, 1 part by weight of anti-aging agent TMQ, 2 parts by weight of anti-aging agent 6PPD, 1 part by weight of microcrystalline wax and 0.2 part by weight of anti-scorching agent CTP.
Example 3
The embodiment of the application provides a sizing composition, which consists of 100 parts by weight of TSR9710 natural rubber, 27 parts by weight of N220 carbon black, 25 parts by weight of 955GR white carbon black, 3.5 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 1.26 parts by weight of sulfur, 1.8 parts by weight of accelerator NS, 5 parts by weight of Si69, 1 part by weight of anti-aging agent TMQ, 2 parts by weight of anti-aging agent 6PPD, 1 part by weight of microcrystalline wax and 0.2 part by weight of anti-scorching agent CTP.
Example 4
The embodiment of the application provides a sizing composition, which consists of 100 parts by weight of TSR9710 natural rubber, 27 parts by weight of N220 carbon black, 17 parts by weight of 955GR white carbon black, 3.5 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 1.26 parts by weight of sulfur, 1.8 parts by weight of accelerator NS, 3.4 parts by weight of Si69, 1 part by weight of anti-aging agent TMQ, 2 parts by weight of anti-aging agent 6PPD, 1 part by weight of microcrystalline wax and 0.2 part by weight of anti-scorching agent CTP.
Example 5
The embodiment of the application provides a sizing composition which consists of 100 parts by weight of TSR9710 natural rubber, 33 parts by weight of N220 carbon black, 23 parts by weight of 955GR white carbon black, 3.5 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 1.26 parts by weight of sulfur, 1.8 parts by weight of accelerator NS, 4.6 parts by weight of Si69, 1 part by weight of anti-aging agent TMQ, 2 parts by weight of anti-aging agent 6PPD, 1 part by weight of microcrystalline wax and 0.2 part by weight of anti-scorching agent CTP.
Example 6
The embodiment of the application provides a sizing composition, which consists of 100 parts by weight of TSR9710 natural rubber, 30 parts by weight of N134 carbon black, 20 parts by weight of 955GR white carbon black, 3.5 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 1.26 parts by weight of sulfur, 1.8 parts by weight of accelerator NS, 4 parts by weight of Si69, 1 part by weight of anti-aging agent TMQ, 2 parts by weight of anti-aging agent 6PPD, 1 part by weight of microcrystalline wax and 0.2 part by weight of anti-scorching agent CTP.
Example 7
The embodiment of the application provides a sizing composition, which consists of 100 parts by weight of TSR9710 natural rubber, 30 parts by weight of N234 carbon black, 20 parts by weight of 955GR white carbon black, 3.5 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 1.26 parts by weight of sulfur, 1.8 parts by weight of accelerator NS, 4 parts by weight of Si69, 1 part by weight of anti-aging agent TMQ, 2 parts by weight of anti-aging agent 6PPD, 1 part by weight of microcrystalline wax and 0.2 part by weight of anti-scorching agent CTP.
Comparative example 1
Comparative example of the present application provides a cement composition consisting of 100 parts by weight of TSR9710 natural rubber, 45 parts by weight of N220 carbon black, 20 parts by weight of 955GR white carbon black, 3.5 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 1.26 parts by weight of sulfur, 1.8 parts by weight of accelerator NS, 4 parts by weight of Si69, 1 part by weight of antioxidant TMQ, 2 parts by weight of antioxidant 6PPD, 1 part by weight of microcrystalline wax and 0.2 parts by weight of scorch retarder CTP.
Comparative example 2
Comparative example of the present application provides a cement composition consisting of 100 parts by weight of TSR9710 natural rubber, 15 parts by weight of N220 carbon black, 20 parts by weight of 955GR white carbon black, 3.5 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 1.26 parts by weight of sulfur, 1.8 parts by weight of accelerator NS, 4 parts by weight of Si69, 1 part by weight of antioxidant TMQ, 2 parts by weight of antioxidant 6PPD, 1 part by weight of microcrystalline wax and 0.2 parts by weight of scorch retarder CTP.
Comparative example 3
Comparative example of the present application provides a cement composition consisting of 100 parts by weight of TSR9710 natural rubber, 30 parts by weight of N220 carbon black, 35 parts by weight of 955GR white carbon black, 3.5 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 1.26 parts by weight of sulfur, 1.8 parts by weight of accelerator NS, 4 parts by weight of Si69, 1 part by weight of antioxidant TMQ, 2 parts by weight of antioxidant 6PPD, 1 part by weight of microcrystalline wax and 0.2 parts by weight of scorch retarder CTP.
Comparative example 4
Comparative example of the present application provides a cement composition consisting of 100 parts by weight of TSR9710 natural rubber, 30 parts by weight of N220 carbon black, 5 parts by weight of 955GR white carbon black, 3.5 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 1.26 parts by weight of sulfur, 1.8 parts by weight of accelerator NS, 4 parts by weight of Si69, 1 part by weight of antioxidant TMQ, 2 parts by weight of antioxidant 6PPD, 1 part by weight of microcrystalline wax and 0.2 parts by weight of scorch retarder CTP.
Comparative example 5
Comparative example of the present application provides a cement composition consisting of 80 parts by weight of TSR9710 natural rubber, 20 parts by weight of neodymium-based cis-butyl rubber CB24 (langsen), 30 parts by weight of N220 carbon black, 20 parts by weight of 955GR white carbon black, 3.5 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 1.26 parts by weight of sulfur, 1.8 parts by weight of accelerator NS, 4 parts by weight of Si69, 1 part by weight of antioxidant TMQ, 2 parts by weight of antioxidant 6PPD, 1 part by weight of microcrystalline wax and 0.2 part by weight of antiscorching agent CTP.
Comparative example 6
Comparative examples of the present application provide a cement composition consisting of 100 parts by weight of solution-polymerized styrene-butadiene SL553R (JSR), 30 parts by weight of N220 carbon black, 20 parts by weight of 955GR white carbon black, 3.5 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 1.26 parts by weight of sulfur, 1.8 parts by weight of accelerator NS, 4 parts by weight of Si69, 1 part by weight of antioxidant TMQ, 2 parts by weight of antioxidant 6PPD, 1 part by weight of microcrystalline wax, and 0.2 part by weight of antiscorching agent CTP.
Test example 1
The rubber compositions of examples 1 to 7 and comparative examples 1 to 6 were respectively prepared into rubber compounds according to the rubber compound preparation method of the present application, and then vulcanized under the conditions of 151 ℃ for 30min to prepare vulcanized rubber compounds, tan & @70 ℃ of the vulcanized rubber compounds was measured by using a dynamic thermomechanical analyzer DMA, 100% tensile stress (M100) and 300% tensile stress (M300) of the vulcanized rubber compounds were measured by using a GB/T528-2009 method, tensile strength (TB) of the vulcanized rubber compounds was measured by using a GB/T528-2009 method, Elongation (EB) of the vulcanized rubber compounds was measured by using a GBT529-1999 method, tear strength TS (KN/M) was measured by using a GB/T9867-2008 method, and DIN abrasion of the vulcanized rubber compounds was measured by using GB/T9867-2008, as shown in tables 5 and 6.
TABLE 5 parameters of vulcanized rubber compositions of examples 1 to 7
TABLE 6 parameters of vulcanized rubber compositions of comparative examples 1-6
| Item | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 | Comparative example 6 |
| tan&@70℃ | 0.2145 | 0.0626 | 0.2032 | 0.0742 | 0.1101 | 0.2035 |
| M100(Mpa) | 4.50 | 2.22 | 4.33 | 2.79 | 3.19 | 3.09 |
| M300(Mpa) | 15.44 | 11.22 | 15.31 | 12.21 | 13.56 | 13.15 |
| TB(Mpa) | 22.09 | 28.79 | 24.33 | 28.01 | 25.04 | 26.99 |
| EB(％) | 390.33 | 688.99 | 420.18 | 570.69 | 502.79 | 553.12 |
| TS(KN/m) | 49.2 | 93.2 | 53.7 | 89.6 | 60.3 | 74.3 |
| DIN | 142 | 102 | 135 | 110 | 111 | 104 |
As can be seen from the comparison of example 1 and comparative examples 1 and 3, when the carbon black or white carbon black is excessive, the tan & @70 ℃ of the vulcanized rubber compound is higher, and the rolling resistance coefficient of the tire prepared by using the vulcanized rubber compound is higher;
as can be seen from the comparison of example 1 with comparative examples 2 and 4, when the carbon black or white carbon is too low, the formulations of comparative examples 2 and 4 are more costly, although the tan & @70 ℃ of the cured compound is higher and the DIN abrasion is higher;
as can be seen from comparison of example 1 and comparative example 5, when part of the natural rubber was replaced with neodymium-based cis-butyl rubber CB24 (langer), the elongation (EB%) and Tear Strength (TS) of the vulcanized rubber stock were reduced, and the cost of neodymium-based cis-butyl rubber CB24 (langer) was high;
as can be seen by comparing example 1 with comparative example 6, when the natural rubber was replaced with solution polymerized styrene-butadiene SL553R (JSR), the tan & @70 ℃ of the cured compound was higher and the rolling resistance coefficient of the tire made with the cured compound was higher;
as can be seen by comparing example 1 with examples 6 and 7, the tan & @70 ℃ of the cured compound was higher when the N220 carbon black was replaced with either the N134 carbon black or the N234 carbon black, and the rolling resistance coefficient of the tire made with the cured compound was higher.
In summary, the vulcanized rubber material has low DIN abrasion, tan & @70 ℃ and low rolling resistance coefficient, and the tire prepared by the vulcanized rubber material has high tensile strength and elongation. The vulcanized rubber material has good comprehensive performance, is suitable for long-distance high-speed road surfaces of all-steel truck tires, has excellent wear resistance and oil saving performance, and meanwhile, the rubber material of the formula of the embodiment has good processing technology performance in the production process, high processing safety, stable geometric dimension of extruded semi-finished products, no material return phenomenon and mass industrial production conditions. The all-steel long-distance high-wear-resistance low-rolling-resistance load-bearing radial tire produced by the rubber material has the advantages of high driving mileage, long service life, low rolling resistance, oil saving and green performance.
The foregoing is illustrative of the present application and is not to be construed as limiting thereof, as numerous modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A sizing composition, characterized in that said sizing composition comprises: 100 parts by weight of natural rubber, 25-35 parts by weight of carbon black and 15-25 parts by weight of white carbon black.
2. Sizing composition according to claim 1, characterized in that it comprises: 100 parts by weight of natural rubber, 27-33 parts by weight of carbon black and 17-23 parts by weight of white carbon black.
3. Sizing composition according to claim 1, characterized in that it comprises: 100 parts by weight of natural rubber, 30 parts by weight of carbon black and 20 parts by weight of white carbon black.
4. The sizing composition according to claim 1, wherein said carbon black is an N220 carbon black;
optionally, the white carbon black is 955GR white carbon black.
5. Sizing composition according to any of claims 1 to 4, characterized in that it comprises 2 to 6 parts by weight of zinc oxide and 1 to 4 parts by weight of stearic acid.
6. Sizing composition according to any of claims 1 to 4, characterized in that it comprises 1 to 2 parts by weight of a vulcanizing agent and 1.5 to 2.5 parts by weight of a vulcanization accelerator.
7. The sizing composition according to any one of claims 1 to 4, wherein the sizing composition comprises 3 to 5 parts by weight of a silane coupling agent, 2 to 6 parts by weight of an anti-aging agent, 1 to 2 parts by weight of microcrystalline wax and 0.1 to 0.3 part by weight of an anti-scorching agent.
8. A method for preparing a compound, characterized in that the method for preparing the compound comprises: mixing 100 parts by weight of natural rubber, 16.7-23.3 parts by weight of carbon black, 2-5 parts by weight of zinc oxide and 7.5-8.5 parts by weight of white carbon black to prepare a first-stage master batch, mixing the first-stage master batch, 8.3-11.7 parts by weight of carbon black, 7.5-8.5 parts by weight of white carbon black, 1-4 parts by weight of stearic acid, 3-5 parts by weight of a silane coupling agent, 2-6 parts by weight of an anti-aging agent and 1-2 parts by weight of microcrystalline wax to prepare a second-stage master batch, recycling the second-stage master batch to prepare a third-stage master batch, and finally refining the third-stage master batch, 1-2 parts by weight of a vulcanizing agent, 1.5-2.5 parts by weight of a vulcanization accelerator and 0.1-0.3 part by weight of an anti-scorch.
9. A compound, characterized in that it is obtained by a process for the preparation of a compound according to claim 8.
10. A tire, characterized in that the tread of said tire is vulcanized using the compound of claim 9.
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