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Method for preparing regenerated rubber from scrap tires

A technology of reclaimed rubber and waste tires, applied in the field of reclaimed rubber synthesis, can solve the problems of large amount of sulfur-containing waste gas and environmental pollution, achieve good physical and mechanical properties, low energy consumption, and be conducive to recycling

Inactive Publication Date: 2016-09-21
张静
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention: Aiming at the occurrence of traditional waste rubber in the process of producing and preparing reclaimed rubber, a large amount of sulfur-containing waste gas is generated during the desulfurization process, and a large amount of waste water containing harmful substances such as petroleum and volatile phenols is easily produced, causing serious pollution Environmental problems, a method for preparing reclaimed rubber from waste tires is provided. The invention utilizes a self-made culture medium to screen and cultivate microorganisms in coal mine sewage, and then pours the microbial mycelium suspension on the pretreated tire surface to cultivate the obtained The black colonies are fermented strains. Treat the frozen and pulverized tire powder to make it fully desulfurized, then use benzene disulfide and butanethiol as the vulcanizing agent, first soak and swell, then heat and vulcanize to obtain reclaimed rubber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] Weigh successively 30g ferrous sulfate, 3g ammonium sulfate, 0.5g dipotassium hydrogen phosphate, 0.1g potassium chloride, 0.6g magnesium sulfate heptahydrate, 0.02g calcium nitrate and 15g agar, mix them with 800mL deionized water, and use The mass concentration is 3% hydrochloric acid to adjust the pH to 2.2, then transfer it to a pressure steam sterilizer, and sterilize it under the condition of 0.09MPa for 20 minutes to obtain a culture medium; take 2mL of coal mine sewage and evenly coat it on the culture medium obtained above. Then transfer the culture medium to a constant temperature incubator at 30°C and incubate for 36 hours. Rinse the surface of the culture medium with 200 mL of deionized water to obtain a suspension of mycelia; take a used car tire, and manually peel off the steel wire and Cord, then flattened and fixed, then turn the tire to a light-proof and ventilated place, spray 10mL of the above-mentioned mycelia suspension on the tire surface through a ...

example 2

[0023] Weigh successively 32g ferrous sulfate, 4g ammonium sulfate, 0.6g dipotassium hydrogen phosphate, 0.2g potassium chloride, 0.7g magnesium sulfate heptahydrate, 0.03g calcium nitrate and 20g agar, mix them with 900mL deionized water, and use The mass concentration is 4% hydrochloric acid to adjust the pH to 2.3, then transfer it to a pressure steam sterilizer, and sterilize it under the condition of 0.1MPa for 25 minutes to obtain a culture medium; take 3mL of coal mine sewage and evenly coat it on the culture medium obtained above. Then transfer the culture medium to a constant temperature incubator at 32°C, cultivate for 40 hours, rinse the surface of the culture medium with 220mL deionized water, and obtain a suspension of mycelia; take 2 used car tires, and manually peel off the steel wire and Cord, then flattened and fixed, then turn the tire to a light-proof and ventilated place, spray 11mL of the above-mentioned mycelia suspension on the surface of the tire through...

example 3

[0026] Weigh successively 36g ferrous sulfate, 5g ammonium sulfate, 0.7g dipotassium hydrogen phosphate, 0.3g potassium chloride, 0.8g magnesium sulfate heptahydrate, 0.04g calcium nitrate and 25g agar, mix them with 1000mL deionized water, and use The mass concentration is 5% hydrochloric acid to adjust the pH to 2.5, then transfer it to a pressure steam sterilizer, and sterilize it under the condition of 0.11MPa for 30 minutes to obtain a culture medium; take 4mL of coal mine sewage and evenly coat it on the culture medium obtained above. Then transfer the culture medium to a constant temperature incubator at 34°C, cultivate for 48 hours, rinse the surface of the culture medium with 260mL deionized water, and obtain a suspension of mycelium; take 3 used car tires, and manually peel off the steel wire and Cord, then lay flat and fix, and then turn the tire to a light-proof and ventilated place, spray 12mL of the above-mentioned mycelia suspension on the surface of the tire thr...

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Abstract

The invention discloses a method for preparing regenerated rubber from scrap tires, belonging to the field of regenerated rubber synthesis. The method comprises the following steps: carrying out screening culture on microbes in coal mine sewage by using a self-made culture medium, pouring the microbial hypha suspension on a pretreated tire surface, and treating the frozen and pulverized tire powder by using the cultured black bacterial colony as a fermentation strain until the tire powder is sufficiently desulfurized; and by using benzene disulfide and butyl sulfhydrate as vulcanizing agents, carrying out immersion swelling, and heating for vulcanization, thereby obtaining the regenerated rubber. The sulfides in the tires are enriched and absorbed by the microbes in the preparation process, so that no sulfur-containing exhaust is generated, and no wastewater containing petroleum, volatile phenols or other harmful substances is generated, thereby avoiding generating environment pollution.

Description

technical field [0001] The invention discloses a method for preparing reclaimed rubber from waste tires, belonging to the field of reclaimed rubber synthesis. Background technique [0002] Waste rubber, especially waste tires, has high utilization value and can provide a large amount of renewable resources for the society. Waste tires contain 22-24% of synthetic fibers such as nylon, which can be processed into plastic products; 16-18% of steel wire can be used as raw materials for high-quality spring steel; up to 58-60% of rubber mixture can be made into useful reclaimed rubber And various rubber powders with different particle sizes can be widely used in industrial fields such as rubber, building materials, plastics, and coatings. Waste tires are also high-energy fuels, containing 27.59kJ of heat per gram, and can be used in industrial boilers and thermal power plants. [0003] At present, there are many ways to use waste tires. One is the direct utilization of waste ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/24C08J11/10C08L21/00C08K5/37C08K5/375C08L17/00
CPCC08J3/247C08J11/10C08J2321/00C08K5/37C08K5/375C08L17/00C08L2207/24C08L21/00Y02W30/62
Inventor 张静许博伟
Owner 张静
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