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A side support rubber based on synthetic rubber and its preparation method and application
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A technology of synthetic rubber and base rubber, applied in tire sidewalls, special tires, tire parts, etc., can solve the problems of poor batch stability and low hardness of sidewall support rubber, and achieve good thermal fatigue resistance and fatigue resistance. Good, high modulus effect
Active Publication Date: 2022-03-22
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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[0005] In view of this, the present invention provides a shortcoming in order to solve the disadvantages of low hardness of the side support rubber using natural rubber as raw material in the prior art, the contradiction between fatigue, resilience and mechanical properties after high temperature aging, and poor batch stability. A kind of side support rubber based on synthetic rubber and its preparation method and application
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[0036] The present invention also provides the preparation method of the above-mentioned side support rubber based on synthetic rubber, comprising the following steps:
[0037] Step 1, taking each component by proportioning;
[0038] Step 2, putting synthetic butadiene rubber, synthetic cis isoprene rubber and synthetic trans isoprene rubber into the internal mixer, banburying 1-3min;
[0039] Step 3, put the protective agent, stearic acid and carbon black into the internal mixer, and internal mixer for 2-8 minutes;
[0040] Step 4: Put zincoxide and plasticizer into the internal mixer, banbury for 1-4min, remove the glue at 100-140°C, park at 20-50°C for 1-6h, and obtain the mixed rubber;
[0041] Step 5. Put the mixed rubber on the open mill. The temperature of the roller is 60-80°C. Add accelerator and sulfur. After mixing evenly, put it at room temperature and park it for more than 12 hours to obtain a tire with synthetic rubber as the base rubber. Side support glue.
[...
Embodiment 1-6 and comparative example 1-5
[0049] The formulations of the tread rubbers of Examples 1-6 and Comparative Examples 1-5 are shown in Table 1. The preparation method is:
[0050] Step 1, taking each component by proportioning;
[0051] Step 2, put natural rubber, synthetic butadiene rubber, synthetic cis-isoprene rubber and synthetic trans-isoprene rubber into the internal mixer, banburying for 1-3min, banburying temperature is 60-80°C, The speed is 20-70rpm;
[0052] Step 3. Put the protective agent, stearic acid and carbon black into the internal mixer, and internal mixer for 2-8 minutes, the internal mixer temperature is 60-80°C, and the rotational speed is 20-70rpm;
[0053] Step 4: put zincoxide and plasticizer into the internal mixer, banbury for 1-4min, remove glue at 100-140°C, park at 20-50°C for 1-6h, and get the mixed rubber; banbury The temperature is 60-80°C, and the rotation speed is 20-70rpm;
[0054] Step 5. Put the mixed rubber on the open mill. The temperature of the roller is 60-80°C...
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Abstract
The invention relates to a side support rubber based on synthetic rubber, a preparation method and application thereof, and belongs to the technical field of side support rubber. The invention solves the disadvantages of low hardness of the side support rubber in the prior art, which uses natural rubber as raw material, contradictions between fatigue, resilience and mechanical properties after high-temperature aging, and poor batch stability. The sidewall support rubber of the present invention, in parts by weight, comprises: 20-40 parts of synthetic butadiene rubber, 50-90 parts of synthetic cis-isoprene rubber, 0-15 parts of synthetic trans-isoprene rubber, 40-70 parts of carbon black, 3-6 parts of zincoxide, 1-4 parts of stearic acid, 2-10 parts of protective agent, 1-4 parts of sulfur, 0.4-2 parts of accelerator and 2-10 parts of plasticizer. The sidewall support rubber is based on fully synthetic rubber, and has the advantages of high modulus, good fatigue resistance, and good thermal fatigue resistance.
Description
technical field [0001] The invention belongs to the technical field of sidewall support rubber, and in particular relates to a side support rubber with synthetic rubber as the base rubber, a preparation method and application thereof. Background technique [0002] Tires are circular elastic rubber products that roll on the ground and are assembled on various vehicles, aircraft or machinery. Usually installed on metal rims, it can support the body or fuselage, buffer external impact, realize contact with the road surface and ensure driving performance. As far as vehicles are concerned, tires have a direct and important impact on vehicle handling performance, driving safety, fuel consumption, and driving comfort. As far as aircraft is concerned, tires play an important role in ensuring safety, and their performance is directly related to the safety of take-off and landing. [0003] The side support rubber was originally transformed from the concept of car safety tires. When ...
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