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Treatment method for waste tire rubber

A waste tire rubber and treatment method technology, which is applied in the field of waste tire rubber treatment, can solve environmental pollution and other problems, and achieve the effects of fast metabolic rate, vigorous growth, low temperature ductility and elastic recovery improvement

Pending Publication Date: 2019-02-26
张青美
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the disposal of waste rubber tires, people have tried to use landfill or incineration, but this will pollute the environment

Method used

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  • Treatment method for waste tire rubber

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Experimental program
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Effect test

Embodiment 1

[0030] A processing method for waste tire rubber, the components are calculated in parts by weight, and the processing method comprises the following steps:

[0031] (1) Cut the cleaned waste tires into rubber granules with a size of 1mm×1mm×1mm, place them in acetone / chloroform mixture, and extract them with a Soxhlet extractor for 12 hours at a temperature of 80°C, wherein the acetone and chloroform The volume ratio is 3:7;

[0032] (2) Vacuum-dry the rubber particles at 50°C;

[0033] (3) Put it into an ultra-high pressure water jet device for crushing, the diameter of the nozzle is 2mm, and the moving speed of the nozzle is 1000mm / min;

[0034] (4) put in supercritical CO 2 In the extraction kettle, use diphenyl disulfide as a desulfurizing agent, extract at a temperature of 300-350°C and a pressure of 20-30MPa to obtain desulfurized rubber particles, wherein the concentration of diphenyl disulfide is 12g / L;

[0035] (5) Take 5 parts of devulcanized rubber particles, ...

Embodiment 2

[0047] A processing method for waste tire rubber, the components are calculated in parts by weight, and the processing method comprises the following steps:

[0048] (1) Cut the cleaned waste tires into 1mm×1mm×1mm rubber granules, place them in a mixture of acetone / chloroform, and extract them with a Soxhlet extractor for 12.5 hours at a temperature of 80°C, wherein acetone and chloroform The volume ratio is 3:7;

[0049] (2) Vacuum-dry the rubber particles at 50°C;

[0050] (3) Put it into an ultra-high pressure water jet device for crushing, the diameter of the nozzle is 2mm, and the moving speed of the nozzle is 1200mm / min;

[0051] (4) put in supercritical CO 2 In the extraction kettle, use diphenyl disulfide as a desulfurizing agent, and extract at a temperature of 320°C and a pressure of 23 MPa to obtain desulfurized rubber particles, wherein the concentration of diphenyl disulfide is 13g / L;

[0052] (5) Take 7 parts of devulcanized rubber particles, add 120 parts of...

Embodiment 3

[0064] A processing method for waste tire rubber, the components are calculated in parts by weight, and the processing method comprises the following steps:

[0065] (1) Cut the cleaned waste tires into rubber granules with a size of 1mm×1mm×1mm, place them in acetone / chloroform mixture, and extract them with a Soxhlet extractor for 13 hours at a temperature of 80°C, wherein the acetone and chloroform The volume ratio is 3:7;

[0066] (2) Vacuum-dry the rubber particles at 50°C;

[0067] (3) Put it into an ultra-high pressure water jet device for crushing, the diameter of the nozzle is 2mm, and the moving speed of the nozzle is 1500mm / min;

[0068] (4) put in supercritical CO 2 In the extraction kettle, use diphenyl disulfide as a desulfurizing agent, extract at a temperature of 330°C and a pressure of 25 MPa to obtain desulfurized rubber particles, wherein the concentration of diphenyl disulfide is 14g / L;

[0069] (5) Take 8 parts of devulcanized rubber particles, add 150 ...

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Abstract

The invention provides a treatment method for waste tire rubber; components are measured according to the weight parts. The treatment method comprises the following steps: cutting waste tires into rubber particles, placing the rubber particles in an acetone / chloroform mixed liquid, and extracting; drying in vacuum; crushing; carrying out supercritical CO2 extraction; adding acetone, and extracting; drying in vacuum, adding chloroform, and extracting; drying; treating in a low temperature plasma treatment device; adding ethanol, soaking, cleaning and drying in vacuum; adding soybean lecithin, sucrose and deionized water, and mixing and stirring; adding a lactic acid bacteria solution, and carrying out a reaction; taking out the product, cleaning and drying; adding an ethanol solution of azodiisobutyronitrile, stirring evenly and then putting into a transparent container coated by an aluminum foil, and irradiating with an ultraviolet light source; adding an acrylic acid monomer, and carrying out stirring reaction; removing ethanol and unreacted acrylic acid monomers, and filtering and drying to complete the treatment. The softening point, low temperature ductility and elastic recovery of asphalt after the treated rubber powder is added are obviously improved, wherein the rubber powder is indicated to be effectively used for asphalt modification.

Description

technical field [0001] The invention relates to a treatment method for waste tire rubber. Background technique [0002] The annual scrapping of automobile tires in the world is more than 1 billion. In my country, about 50-60 million rubber tires are scrapped every year. If each tire is 15kg, the amount of waste rubber should be 750-900kt / a, and waste rubber Tires can pollute the environment for decades. For the disposal of waste rubber tires, people have tried to use landfill or incineration, but this will pollute the environment. At present, there are two ways to recycle waste rubber tires: direct utilization (tire refurbishment, track cushioning materials, etc.) and indirect utilization (recycled rubber, rubber powder, thermal decomposition, etc.). Among them, processing waste rubber tires into rubber powder (including coarse rubber powder, fine rubber powder, fine rubber powder and ultrafine rubber powder) is the leading direction for the reuse of waste rubber tires. Ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F291/02C08F220/06C08J11/28C08J3/28C08J3/00C08L95/00C08L51/04C08L23/06C08L19/00
CPCC08F291/02C08J3/00C08J3/28C08J11/28C08J2319/00C08L95/00C08L2205/03C08F220/06C08L51/04C08L23/06Y02W30/62Y02P20/54
Inventor 张青美
Owner 张青美