Production process of environment-friendly regenerated rubber

A technology of regenerated rubber and production process, which is applied in the field of regenerated rubber preparation, can solve the problems of practitioners’ health damage, environmental secondary pollution, and recycled rubber’s pollution to downstream products, and achieve safe material retrieving and operation, good quality, good wear resistance

Inactive Publication Date: 2014-08-20
CHONGQING JUYI RUBBER PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] By adopting the above technical scheme, vegetable oil pitch prepared from cottonseed oil scraps or soybean oil scraps is used to replace coal tar, coal tar pitch and other petrochemical softeners and pine tar, which solves the pollution problem of the produced recycled rubber to downstream products, and Solve the problem of secondary pollution to the environment and damage to the health of practitioners in the process of recycling waste rubber resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The invention relates to a production process of environmentally friendly recycled rubber, which uses 30-32 mesh tread rubber powder as a raw material, and is made through chemical desulfurization, rubber mixing and molding processes.

[0020] In the chemical desulfurization process, add tread rubber powder and additives to the formula: in parts by weight, 1200 parts of tread rubber powder, 120 parts of vegetable oil asphalt, 4804 parts of reclaimed rubber desulfurization activator, and 100 parts of water.

[0021] Put tread rubber powder, vegetable oil asphalt, activator and water into the desulfurization tank, stir the materials continuously, and heat up to 280°C at the same time. When the pressure reaches 2.8MPa, the reaction time is about 2 hours. Stop heating and let stand After 5 minutes, exhaust and release the pressure to complete the desulfurization operation. After rough refining, scraping and refining in the rubber mixer, the product is formed by molding.

...

Embodiment 2

[0025] The invention relates to a production process of environmentally friendly recycled rubber, which uses 30-32 mesh tread rubber powder as a raw material, and is made through chemical desulfurization, rubber mixing and molding processes.

[0026] In the chemical desulfurization process, add tread rubber powder and additives to the formula: in parts by weight, 1800 parts of tread rubber powder, 180 parts of vegetable oil asphalt, 5106 parts of reclaimed rubber desulfurization activator, and 350 parts of water.

[0027] Add tread rubber powder, vegetable oil asphalt, activator and water into the desulfurization tank, stir the materials continuously, and heat up to 270°C at the same time. When the pressure reaches 2.0MPa, the reaction time is about 2 hours. Stop heating and let stand After 10 minutes, exhaust and release the pressure to discharge the material to complete the desulfurization operation. After rough refining, scraping and refining in the rubber mixer, the produc...

Embodiment 3

[0031] The invention relates to a production process of environmentally friendly recycled rubber, which uses 30-32 mesh tread rubber powder as a raw material, and is made through chemical desulfurization, rubber mixing and molding processes.

[0032] In the chemical desulfurization process, add tread rubber powder and additives to the formula: in parts by weight, 2000 parts of tread rubber powder, 200 parts of vegetable oil asphalt, 51010 parts of reclaimed rubber desulfurization activator, and 400 parts of water.

[0033] Put tread rubber powder, vegetable oil asphalt, activator and water into the desulfurization tank, stir the materials continuously, and heat up to 280°C at the same time. When the pressure reaches 2.8MPa, the reaction time is about 2h. Stop heating and let stand After 10 minutes, exhaust and release the pressure to discharge the material to complete the desulfurization operation. After rough refining, scraping and refining in the rubber mixer, the product is...

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Abstract

The invention discloses a production process of environment-friendly regenerated rubber prepared through chemical desulfurization, milling and molding procedures with a tread rubber powder as a raw material. The preparation method is characterized in that: in the chemical desulfurization procedure, the added tread rubber powder and auxiliary agent formula comprises the components in parts by weight: 1200-2000 parts of the tread rubber powder, 120-200 parts of vegetable oil pitch, 2-10 parts of an activator, and 100-400 parts of water. The vegetable oil pitch instead of conventional coal tar, pine tar, coal pitch and the like is used as a softener for chemical vulcanization of the regenerated rubber, so that the prepared regenerated rubber can reach national standard A-level regenerated rubber standards, and is environmentally friendly and odorless. A leather shoe sole prepared from the regenerated rubber does not turn blue, and is good in wear resistance and good in quality.

Description

technical field [0001] The invention relates to a method for preparing regenerated rubber, in particular to an environment-friendly method for preparing regenerated rubber. Background technique [0002] Regenerated rubber is through physical desulfurization (i.e. decomposition, crushing) and chemical desulfurization (softening and activation under high temperature and high pressure) of waste rubber products such as tires to destroy the macromolecular network cross-linked structure in rubber products into single-chain Small molecular machinery that transforms elastomers into processable viscoelastics. [0003] The traditional recycled rubber production has passed the water method, oil method, and water-oil method, and now it has developed into high-temperature dynamic desulfurization method, room temperature machine desulfurization method and infrared desulfurization method. The most commonly used method is high-temperature dynamic desulfurization method, and the softener use...

Claims

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Application Information

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IPC IPC(8): C08J11/18C08L17/00
CPCY02W30/62
Inventor 谭书文王文
Owner CHONGQING JUYI RUBBER PROD
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