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Preparation method for environmental-friendly special grade reclaimed rubber

A recycled rubber, environmentally friendly technology, applied in the field of waste rubber recycling, can solve the problems of low physical properties of products, low production efficiency, narrow application range, etc., and achieve the effects of outstanding economic benefits, high production efficiency, and high physical and technical indicators.

Inactive Publication Date: 2013-08-28
攀枝花市扬驰胶业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the desulfurization process, mainly put 20-30 mesh rubber powder, water, coal tar, and activator into the desulfurization tank, cover the tank cover tightly, stir and heat to make the pressure in the tank reach 1.8-2.2Mpa, and keep it for 3-4 hours , to achieve the purpose of desulfurization; this production method uses mineral tar as a softening plasticizer, and the activator uses phenols, and the physical properties of the produced product are low, especially the tensile strength generally reaches 8-11MPa at most, and the elongation at break It is 250-350%, which cannot meet the higher requirements for products in the market. The application range of the product is relatively narrow, and the desulfurization time is long, the production efficiency is low, and the cost is relatively high.

Method used

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  • Preparation method for environmental-friendly special grade reclaimed rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method of environment-friendly super-grade recycled rubber: use 35-mesh tread rubber powder as raw material, and make it through desulfurization, kneading, refining and forming processes.

[0024] In the desulfurization process, the formula of adding tread rubber powder and auxiliary agents is: by weight, 140 parts of 35 mesh tread rubber powder, 8 parts of reclaimed rubber desulfurization softener pine tar, and 5 parts of toluene diamine isomers , 17 parts of water, 480 parts of reclaimed rubber desulfurization activator, the number of parts is 0.3 parts. The process conditions of the desulfurization process are as follows: put the material into the desulfurization tank according to the above formula, cover the tank lid tightly, continuously stir the material, and heat up to 240°C to 280°C at the same time, and stop heating when the pressure reaches 2.3MPa. After standing still for 8 minutes, discharge the steam and discharge the pressure to complete the ...

Embodiment 2

[0028] In the desulfurization process, the formula of adding tread rubber powder and additives is: by weight, 100 parts of 30 mesh tread rubber powder, 6 parts of reclaimed rubber desulfurization softener pine tar, and 2 parts of toluene diamine isomers , 15 parts of water, 480 parts of reclaimed rubber desulfurization activator, the number of parts is 0.2 parts. The technical conditions of the desulfurization process are: put the material into the desulfurization tank according to the above formula, cover the tank cover tightly, continuously stir the material, and heat up to 240°C-280°C at the same time, when the pressure reaches 1.8-2.8MPa, stop After heating and standing for 5 minutes, exhaust steam and discharge the pressure to complete the desulfurization operation. Then the desulfurized rubber is kneaded by XK-480 rubber mixer for 8 to 16 times, then scraped for 2 to 6 times, refined by XK-560 refiner, and then the next sheet is formed.

[0029] The produced environment...

Embodiment 3

[0032] In the desulfurization process, the formula of adding tread rubber powder and additives is: by weight, 180 parts of 40 mesh tread rubber powder, 10 parts of reclaimed rubber desulfurization softener pine tar, and 8 parts of toluene diamine isomers , 20 parts of water, 480 parts of reclaimed rubber desulfurization activator, the number of parts is 0.4 parts. The technical conditions of the desulfurization process are: put the materials into the desulfurization tank according to the above formula, continuously stir the materials, cover the tank lid tightly, and heat up to 240°C-280°C at the same time, when the pressure reaches 1.8-2.8MPa, stop After heating and standing for 5-10 minutes, exhaust steam and discharge pressure to complete the desulfurization operation. Then the desulfurized rubber is kneaded 8 to 16 times by XK-480 rubber mixer, then scraped 2 to 6 times, refined by XK-560 refiner, and then the next piece is formed.

[0033] The produced environmentally fri...

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Abstract

The invention discloses a preparation method for environmental-friendly special grade reclaimed rubber. The production process of the method comprises desulfurizing, kneading, refining, forming and warehousing tread rubber powder of 20-40 meshes, wherein a desulfurizing process comprises the following steps of: putting 100-180 parts by weight of tread rubber powder, 6-10 parts by weight of a reclaimed rubber desulfurization softener, 2-8 parts by weight of a petroleum plasticizer, 15-20 parts by weight of water and 0.2-0.4 part by weight of a reclaimed rubber desulfurization softener environmentally-friendly activating agent in a formula into a desulfurizing tank; tightly covering a tank cover; heating and raising the temperature while continuously stirring; when the temperature of the desulfurizing tank is up to 240-280 DEG C, and the pressure is up to 1.8-2.8MPa, stopping heating and stirring; standing for 5-10 minutes; and exhausting, decompressing and discharging. The physical performance tensile strength of the reclaimed rubber produced with the process is 12-16MPa, the elongation at break is 350-500 percent, and the Mooney indexes are within 90.

Description

technical field [0001] The invention relates to the technical field of recycling waste rubber, in particular to a method for preparing environmentally friendly super-grade recycled rubber. Background technique [0002] my country is a big rubber consumption country, but it is also a country that is very scarce in rubber resources. About half of the annual consumption needs to be imported. Therefore, the recycling of waste tires is very important to our country. This is a major event that saves rubber resources, protects the environment, turns harm into benefit, turns waste into wealth, benefits in the present, and contributes to future generations. With the development of the automobile industry, the generation of waste tires is also increasing. According to the statistics of the World Environmental Health Organization, the stock of waste tires in the world has reached 3 billion, and it is increasing at an astonishing number of about 1 billion per year. The recycling and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J11/28C08J11/10C08L17/00
CPCY02W30/62
Inventor 王文练斌
Owner 攀枝花市扬驰胶业有限公司