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Rubber composition, tyre tread rubber and preparation method thereof

A rubber composition and composition technology, applied in the direction of special tires, tire parts, transportation and packaging, etc., can solve the improvement results of rolling resistance, wet skid resistance, heat generation and aging resistance, liquid rubber High price, complex preparation process and other problems, to achieve the effect of saving energy and reducing consumption, small rolling resistance, and good anti-wet skid performance

Active Publication Date: 2014-05-14
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 the better tire tread rubber composition of performance, the liquid rubber in the tread rubber composition of this invention comprises two kinds of monomers: isoprene and vinylpyridine, and the preparation process of this liquid rubber is comparatively difficult. Complicated, the price of the monomer vinylpyridine is more expensive, which makes the price of the liquid rubber more expensive, and the relatively expensive SiO is used 2 As a reinforcing agent, the manufacturing cost of the tire is higher
In addition, the invention does not mention the improvement results of rolling resistance, wet skid resistance, heat generation and aging resistance when the tread compound composition is used as tire tread compound

Method used

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  • Rubber composition, tyre tread rubber and preparation method thereof
  • Rubber composition, tyre tread rubber and preparation method thereof
  • Rubber composition, tyre tread rubber and preparation method thereof

Examples

Experimental program
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Effect test

preparation example 1

[0087] This preparation is used to illustrate the liquid polyisoprene and its preparation method according to the present invention.

[0088] 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 lithium...

preparation example 2

[0090] This preparation is used to illustrate the liquid polyisoprene and its preparation method according to the present invention.

[0091] 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

[0093] This preparation example is used to illustrate the liquid polyisoprene and its preparation method and application according to the present invention.

[0094] 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.

[0095] Table 1

[0096]

[0097] 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 bel...

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Abstract

The invention relates to a rubber composition. The composition comprises a main body rubber, a vulcanizing agent, a vulcanization accelerator, an activator and a reinforcing agent. The composition also comprises liquid isoprene rubber. The main body rubber comprises natural rubber, butadiene rubber and solution polymerized styrene-butadiene rubber. The invention also discloses tyre tread rubber and a preparation method thereof. The tyre tread rubber provided by the invention is low in processing energy consumption, good in surface quality of extruding and calendaring rubber materials, good in physical and mechanical properties and ageing resistant property, and relatively small in compression set and heat generation, and can improve durability of the tyre and prolong the service life of the tyre. The tyre tread rubber provided by the invention has good wet skid resistance and low rolling resistance, can guarantee security of the tyre in a driving process and is benefit for energy conservation of the tyre.

Description

technical field [0001] The invention relates to a rubber composition, a tire tread rubber and a preparation method thereof. Background technique [0002] With the development of the automobile industry and transportation industry, people have higher and higher requirements for the performance of automobile tires. On the premise of ensuring the safety of tires during driving, great attention has been paid to the service life of tires and the reduction of automobile fuel consumption. Tread rubber is an important part of the tire, which directly contacts the road surface during driving, so the performance of the tread rubber plays a vital role in the performance of the entire tire, the safety of the tire during driving, and the fuel-saving effect. Tread rubber first requires good physical and mechanical properties, and its physical and mechanical properties include tensile strength, elongation at break, constant elongation stress, permanent deformation, hardness, tear resistanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/00C08L9/06C08K13/02C08K3/04C08K3/36C08K3/22C08K5/09B60C1/00
CPCY02T10/86
Inventor 贺小进王世朝王妮妮康新贺杨洪友韩书亮刘辉石建文
Owner CHINA PETROLEUM & CHEM CORP
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