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Tire tread rubber without zinc oxide

A tire tread and zinc oxide technology, applied in the field of zinc oxide-free tire tread rubber, can solve water pollution and other problems, and achieve the effects of avoiding pollution, good performance, and promoting decomposition

Active Publication Date: 2013-09-18
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pollution of zinc oxide in waste tires to water sources has caused serious consequences

Method used

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  • Tire tread rubber without zinc oxide
  • Tire tread rubber without zinc oxide
  • Tire tread rubber without zinc oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] According to the formula in Table 1, the amount of styrene-butadiene rubber 1502 is 100 parts, the amount of carbon black N330 is 30 parts, the amount of zinc oxide is 0 parts, and the amount of cetyltrimethylammonium chloride is 2 parts. Mixing, the mixing temperature is 50 ° C, The vulcanization temperature is 150°C, and the vulcanization time is 1h. Then test the vulcanization performance of the compound at 150°C. The vulcanization curve of the sample at 150°C is as follows figure 1 As shown in the middle curve (a), the 150°C vulcanization curve of the reference sample is as follows figure 1 Curve (b) in the middle; the vulcanization properties and physical and mechanical properties of the vulcanizate are shown in Table 2.

[0029] Table 2 Effect of quaternary ammonium salts on properties of styrene-butadiene rubber

[0030]

[0031] As can be seen from the results in Table 2: compared with the reference sample, T containing 2 parts of quaternary ammonium salt ...

Embodiment 2

[0033] According to the formula in Table 1, the dosage of styrene-butadiene rubber 1502 is 100 parts, the dosage of carbon black N330 is 30 parts, the dosage of zinc oxide is 5 parts, and the dosage of quaternary ammonium salt is 0 parts. The time is 1h. Then test the vulcanization performance of the compound at 150°C. The vulcanization curve of the sample at 150°C is as follows figure 2 As shown in the middle curve (a), the 150°C vulcanization curve of the reference sample is as follows figure 2 Curve (b) in the middle; the vulcanization properties and physical and mechanical properties of the vulcanizate are shown in Table 3.

[0034] Table 3 Effect of zinc oxide on properties of styrene-butadiene rubber

[0035]

[0036]

[0037] From the results in Table 3, it can be seen that compared with the reference sample, T 10 Slightly extended, T 90 Shorten and increase the vulcanization speed; while its modulus, tensile strength, and tear strength are all improved. T...

Embodiment 3

[0039] According to the formula in Table 1, the amount of natural rubber is 100 parts, the amount of carbon black is 30 parts, the amount of zinc oxide is 0 parts, and the amount of octadecyltrimethylammonium bromide is 3 parts. Mixing, the mixing temperature is 50 ° C, and the vulcanization temperature is 143°C, curing time is 1h. Then test the vulcanization performance of the compound at 143°C. The vulcanization curve of the sample at 143°C is as follows image 3 As shown in the middle curve (a), the 143°C vulcanization curve of the reference sample is as follows image 3 Curve (b) in the middle; the vulcanization properties and physical and mechanical properties of the vulcanizate are shown in Table 4.

[0040] Table 4 The influence of quaternary ammonium salts on the properties of natural rubber

[0041]

[0042] As can be seen from the results in Table 4: compared with the reference sample, the T containing 3 parts of quaternary ammonium salt rubber 10 shortened, T...

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Abstract

The invention relates to tire tread rubber without zinc oxide. The zinc oxide is added in the existing tread rubber. Zinc is released to the environment during the production, using and recovery processes of a tire, and the zinc release causes adverse effects to the health of a human body, in particular to aquatic organisms and pollutes groundwater. In the formula of the tire tread rubber without the zinc oxide, disclosed by the invention, calculated by mass fraction, 2-4 parts of quaternary ammonium salt, as well as carbon black, stearic acid, an accelerator CZ, sulfur and an anti-aging agent 4010NA are simultaneously added into each 100 parts of the rubber. The matrix rubber used by the tire tread rubber takes styrene-butadiene rubber, natural rubber, polybutadiene rubber and blends thereof as main bodies; and the adopted quaternary ammonium salt is hexadecyl trimethyl ammonium bromide, hexadecyl trimethyl ammonium chloride or stearyl trimethyl ammonium bromide and stearyl trimethyl ammonium chloride. According to the tire tread rubber disclosed by the invention, the quaternary ammonium salt is used for replacing the zinc oxide to activate the accelerator, so that ash pollution is reduced and the tire tread rubber is more environment-friendly.

Description

technical field [0001] The invention relates to a new vulcanization method, which uses quaternary ammonium salt instead of zinc oxide as an activation accelerator to obtain good performance and avoid zinc oxide pollution. Background technique [0002] Recently, reducing the amount of zinc oxide in rubber compounds has become an important research topic because soluble zinc compounds are harmful to aquatic organisms. Zinc is released into the environment during the production, use and recycling of rubber products, especially tires. Zinc in groundwater may come from rubber dust from tire wear and rubber particles from waste tires used in the construction of sports fields. The release of zinc can have adverse effects on human health, especially aquatic organisms. In Directive 2400 / 73 / EC of the European Commission, zinc oxide is classified as "harmful to the environment", and the risk statement is R50 / 53 "toxic to aquatic organisms, which will have long-term harmful effects on...

Claims

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Application Information

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IPC IPC(8): C08L9/06C08L7/00C08L9/00C08K5/19
Inventor 王益庆段练童亚明吴晓辉张立群
Owner BEIJING UNIV OF CHEM TECH
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