A kind of rubber composition and tire shoulder rubber and preparation method thereof

A rubber composition and composition technology, applied in special tires, tire parts, transportation and packaging, etc., can solve the improvement results of rolling resistance, wet skid resistance, heat generation and aging resistance, monomer Vinylpyridine is expensive and tire manufacturing costs are high, and it achieves good mixing process performance, dynamic mechanical properties, environmental protection, and low processing energy consumption.

Active Publication Date: 2016-05-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this invention can obtain tire tread rubber composition with better performance, the liquid rubber in the tread rubber composition of this invention needs to contain two kinds of monomers: isoprene and vinylpyridine, the preparation process of the liquid rubber It is more complicated, and the price of the monomer vinylpyridine is more expensive, which makes the price of the liquid rubber more expensive, and the relatively expensive SiO2 is used in the rubber processing process. 2 As a reinforcing agent, the manufacturing cost of the tire is higher
The method of the invention does not mention the improvement results of the tread compound composition on rolling resistance, wet skid resistance, heat generation and aging resistance when it is used as tire tread compound

Method used

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  • A kind of rubber composition and tire shoulder rubber and preparation method thereof
  • A kind of rubber composition and tire shoulder rubber and preparation method thereof
  • A kind of rubber composition and tire shoulder rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0083] This preparation example is used to illustrate the liquid isoprene and its preparation method according to the present invention.

[0084] Polymerization was carried out in a 5L polymerization reactor. After the polymerization system is replaced by high-purity nitrogen, 200g of isoprene monomer and 1800g of dry cyclohexane are added to the polymerization reactor in sequence, and deionized water is added to the polymerization reactor under stirring, and the stirring is continued for about 10 minutes and heated to 40°C, and then add 15.8mL of n-butyllithium n-hexane solution with a concentration of 0.3M at this temperature to start the polymerization reaction. During the polymerization reaction, the temperature is controlled within the range of 40-50°C, and the polymerization reaction The pressure in the kettle was controlled at 0.1-0.3 MPa (gauge pressure), and the polymerization was carried out for 120 minutes. Wherein, the molar ratio of deionized water to organic lit...

preparation example 2

[0086] This preparation example is used to illustrate the liquid isoprene and its preparation method according to the present invention.

[0087] The same method as Preparation Example 1 was used to polymerize isoprene, except that the molar ratio of deionized water to organolithium initiator was 2:100. As determined by weighing method, the conversion of isoprene was 100%. The prepared liquid polyisoprene was characterized and the results are shown in Table 1.

preparation example 3

[0089] This preparation example is used to illustrate the liquid isoprene and its preparation method and application according to the present invention.

[0090] The same method as Preparation Example 1 was used to polymerize isoprene, except that the molar ratio of deionized water to organolithium initiator was 4:100. As determined by weighing method, the conversion of isoprene was 100%. The prepared liquid polyisoprene was characterized and the results are shown in Table 1.

[0091] Table 1

[0092]

[0093] It can be seen from the results in Table 1 that in the liquid polyisoprene prepared by the method of the present invention, the content of structural units formed by 1,4-polymerization of isoprene is high, which can reach more than 96.9 mol % ( Under optimal conditions, it can reach more than 97 mole %); the molecular weight distribution of the prepared liquid polyisoprene is relatively narrow, and can reach below 1.11 (under optimal conditions, it can reach below 1...

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Abstract

The invention discloses a rubber composition, a tire shoulder glue and a preparation method. The composition contains dialkene rubber, a vulcanizing agent, a sulfuration promoter, an activator and a reinforcing agent, wherein the composition also contains liquid polyisoprene rubber, the dialkene rubber contains solution polymerized styrene-butadiene rubber and natural rubber. The rubber composition has the advantages of low processing energy consumption, good surface quality of an extrusion and calendering rubber compound, excellent physical mechanicalness, little compression permanent deformation and rolling resistance, low heat generation and good heat stability, and is capable of increasing endurance of the tire and prolonging the tire life, and is in favor of energy saving of the tire. The rubber composition can avoid the disadvantages of easy volatilization and environmental pollution of a common plasticizer under high temperature, and is suitable for preparing high performance green tires.

Description

technical field [0001] The invention relates to a rubber composition, a tire shoulder rubber and a preparation method thereof. Background technique [0002] With the improvement of road grades and the development of the transportation industry, it is quite common for cars to run at high speeds and overloaded, and people have higher and higher requirements for tire performance. During the running of the tire, the tire shoulder bears concentrated stress, large deformation, and high heat generation. Therefore, early phenomena such as shoulder voids and shoulder cracks are prone to occur during driving, which affects the service life of the tire. In addition, in the process of traditional rubber processing, low-molecular-weight aromatic hydrocarbons are often used as plasticizers or softeners. These plasticizers will not only reduce the physical properties of vulcanized rubber, but also are volatile at high temperatures. It is easy to migrate to the surface of the product or be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/00C08L9/06C08L9/00B60C1/00
CPCY02T10/86
Inventor 贺小进王世朝康新贺王妮妮杨洪友韩书亮刘辉石建文
Owner CHINA PETROLEUM & CHEM CORP
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