A method for reducing the odor of pneumatic tires and low-odor tires
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A pneumatic tire and odor technology, applied in the field of pneumatic tires, can solve the problems of unfavorable promotion and application and high cost, and achieve the effects of facilitating promotion, reducing odor level and reducing cost
Active Publication Date: 2022-02-25
CHENG SHIN RUBBER CHINA
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[0004] However, the existing technology needs to redesign the formula to meet the tire performance requirements, it is difficult to simply correspond to tires of various specifications, the cost is high, and it is not conducive to popularization and application
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Embodiment 1
[0045] According to the components and their proportions shown in Table 1, put rubber, carbon black, oil, etc. into the Banbury internal mixer in sequence, and unload after banburying at 135°C for 120 seconds to obtain a master batch; the master batch The rubber and sulfur were mixed in a Banbury internal mixer at 105°C for 90 seconds and then unloaded to obtain a rubber composition.
[0046] The specific components of the rubber composition in Table 1 embodiment 1-3 (unit: parts by weight)
[0048] Dissolve the above-mentioned rubber composition in n-hexane according to several different weight ratios, and after stirring evenly, take about 70 g of the obtaine...
Embodiment 2-3
[0053] According to the components and their proportions shown in Table 1, rubber compositions were obtained by using the mixing method in Example 1.
[0054] Dissolve the above rubber composition in n-hexane at a weight ratio of 1:4, stir evenly, take about 70 g of the obtained rubber mixed solution, and spray it evenly on the unvulcanized raw tire, and then let it stand for 30 minutes . Vulcanize the raw tires after standing still according to the set conditions to obtain low-odor tires.
[0055] According to the above-mentioned method, 15 people were invited to evaluate the low-odor tires respectively, and the median average was taken. The results are shown in Table 3.
[0056] The overall tire odor evaluation result of table 3 embodiment 1-3
[0057] Example 1 2 3 odor level 3.5 3.5 3.5
[0058] It can be seen from the above examples that the present invention effectively reduces tire odor without changing the existing formulation and manufactur...
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Abstract
The invention provides a method for reducing the odor of a pneumatic tire and a low-odor tire. The method comprises the following steps: providing a rubber mixing solution; the rubber mixing solution includes an organic solvent for dissolving rubber and a rubber composition, and the rubber combination The composition includes the following components by weight: 60-100 parts of butyl rubber; 0-40 parts of natural rubber; 30-70 parts of carbon black; 1-10 parts of naphthenic oil; 2-6 parts of oxidized Zinc; 1-3 parts of stearic acid; 2-6 parts of binder resin; 2-6 parts of dispersant; 0.5-2 parts of sulfur; applying the rubber mixture solution to the surface of unvulcanized raw tire , add sulfur to get low-odor tires. The method of the invention can easily and effectively reduce the odor levels of tires with different formulas without changing the existing formulas and manufacturing conditions, which is beneficial to popularization and application.
Description
technical field [0001] The invention relates to the technical field of pneumatic tires, in particular to a method for reducing the odor of pneumatic tires and low-odor tires. Background technique [0002] As the government and people's requirements for environmental protection and quality of life increase, the requirements for the manufacture of tires and the level of odor produced by products are becoming increasingly stringent. Therefore, tire manufacturers and manufacturers attach great importance to how to eliminate the odor of tire products. The carcass of the pneumatic tire is mainly made of raw materials such as rubber and chemical additives through mixing and crosslinking. The smell of tires mainly comes from raw rubber, plasticizers and other chemical additives. Among them, low-molecular-weight and volatile substances include amines, ketones, and small-molecule styrene (such as free styrene in styrene-butadiene rubber), etc., whose odor is strong, and when the conc...
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