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Rubber composition and preparation method thereof
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A rubber composition and rubber technology, applied in the field of tire manufacturing, can solve the problems of easy thermal aging, lack of processability, reduction and other problems
Pending Publication Date: 2021-05-04
OTSUKA MATERIAL SCI & TECH SHANGHAICO LTD
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Problems solved by technology
However, when epoxynatural rubber is used to make automobile tires, since epoxy natural rubber is easy to be heated and aged, vulcanization reduction occurs, and the tire performance gradually deteriorates during use; when one of the performances is improved in the existing tire formulation technology, other performances There is often a large reduction, especially when the wear resistance is improved by adding or replacing fillers, the rolling resistance will be significantly worse, and it does not have good processing performance
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Embodiment 1
[0066] The raw materials of the rubber composition modified by the jelly energy modifier are as follows in Table 1:
[0067] Example 1 (kg) SBR1739 96.25 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine 0.7 N234 20
[0068] The preparation method of above-mentioned rubber composition is:
[0069] SBR1739, 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine and carbon black were heat treated at 150°C for 120s to obtain a modified rubber composition.
Embodiment 2
[0071] Rubber composition raw material is as follows table 2:
[0072] Comparative example 2 (kg) Example 2 (kg) BR9000 20 20 natural rubber 10 10 SBR1739 96.25 The modified rubber composition obtained in embodiment 1 116.95 N234 70 50 6PPD 2 2 MicrocrystallineWax 1.5 1.5 stearic acid 1 1 Zincoxide 2.5 2.5 CBS 1.5 1.5 sulfur 1.5 1.5
[0073] For the rubber composition modified by adding a multifunctional modifier in Example 2, but not adding a multifunctional modifier in Comparative Example 2; the performance test results for Embodiment 2 and Comparative Example 2 are as follows 3:
[0074] Table 3: Comparison of the performance results of Example 2 and Comparative Example 2
[0075]
[0076]
[0077] *The test results of the rubber composition are expressed in the form of an index,
[0078] The calculation formula is: test item=(Comparative Example 1-1)×100.
[0079] a,...
Embodiment 3
[0088] Rubber composition raw material is as follows table 4:
[0090] The preparation method of above-mentioned rubber composition:
[0091] (1) Take each raw material according to the above-mentioned rubber composition;
[0092] (2) Mixing SBR1739, BR9000, natural rubber and multifunctional modifier for 100s to obtain a mixed material;
[0093] (3) The rest of the raw materials were added to the mixed material, kneaded, and vulcanized at 130° C. to obtain a rubber composition.
[0094] For the application method of the multifunctional modifier in Example 3, it is directly added when the...
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Abstract
The invention discloses a rubber composition and a preparation method thereof. The rubber composition comprises the following raw materials in parts by weight: 100 parts of rubber, 0.5-3 parts of a multifunctional modifier, 30-140 parts of inorganic reinforcing filler and 0-4 parts of a coupling agent. The preparation method of the rubber composition comprises the following steps: (1) weighing the raw materials according to the weight parts of the rubber composition; (2) mixing rubber and a multifunctional modifier, and carrying out thermal reaction treatment at 110-160 DEG C for 60-300 seconds to obtain a mixed material; and (3) adding the inorganic reinforcing filler, the coupling agent, a processing aid and a vulcanizing aid into the mixed material, and performing mixing to obtain the rubber composition. The multifunctional modifier is added into the rubber composition, so that the wear resistance and the wet skid resistance can be improved, and the rubber composition has the properties of low hysteresis loss, low heat generation and low rolling resistance.
Description
technical field [0001] The invention relates to the technical field of tire manufacturing, and more specifically relates to a rubber composition and a preparation method thereof. Background technique [0002] At present, with the development of the automobile industry, passenger cars have become an indispensable means of transportation in people's lives. The tire is a very important part of the car. It is the only part of the car that is in contact with the ground. Various performances of the car, such as driving and braking performance, fuel economy performance, ride comfort performance, handling stability, anti-destructive performance, safety Performance and so on are completely realized by the interaction between the tire and the ground, and the performance of the tire is extremely important to the car. [0003] In order to improve the grip performance of the tire rubber composition, people use natural rubber modified rubber, wherein epoxynatural rubber is widely used. ...
Claims
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Application Information
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