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Production method for reclaimed rubber

A technology of recycled rubber and vulcanized rubber, which is applied in the direction of plastic recycling and recycling technology, and can solve problems such as not being solved well

Inactive Publication Date: 2009-12-09
南京金腾橡塑有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the limitation of the recycled rubber production process, there is no good solution so far.

Method used

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  • Production method for reclaimed rubber
  • Production method for reclaimed rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0015] Select the tire tops of waste tires with a specification of more than 900, and process them according to the following method (see figure 1 ).

[0016] Cutting and washing: Cut the waste tires into pieces and wash away the sediment and other impurities.

[0017] Rubber breaking and crushing: use a rubber breaker to break into 2-5 mesh particles, and then use a pulverizer to crush the rubber particles into about 20 mesh particles.

[0018] Magnetic separation: During the pulverization process, the hoof-shaped magnet is used to remove iron impurities in the particles, and at the same time, the vibrating screen is used to separate the fibers to obtain rubber powder.

[0019] Dynamic desulfurization: Put rubber powder, tall oil, coal tar pitch, De-Link additives, rosin, and water into the dynamic desulfurization tank according to the dosage in Table 1. Open the steam valve, close the steam valve when the amount in the tank reaches the pressure value in Table 1, raise the ...

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Abstract

The invention aims at providing a method for preparing regenerated rubber which is effectively gotten rid of unpleasant smell and the tensile strength of the regenerated rubber is enhanced. In the invention, the waste vulcanized rubber is smashed and magnetically separated to obtain rubber powder. The rubber powder is dynamically desulferized and refined to obtain the regenerated rubber. When in the dynamic desulferation, every 100g rubber powder is added with 12.3-15.0g of tall oil, 6.6-8.1g of coal tar, 0.53-0.64g of De-Link auxiliary agent, 1.64-2.0g of colophony and 9.8-12.0g of water at 0.6-1.0Mpa steam pressure and the heat preservation time lasts for 20-40 minutes.

Description

technical field [0001] The invention relates to a method for preparing regenerated rubber, in particular to a method for preparing regenerated rubber that can increase the tensile strength of regenerated rubber and effectively remove its unpleasant smell. Background technique [0002] The recycling of waste vulcanized rubber is an important industry in all countries in the world. It mainly solves the problem of environmental pollution caused by waste vulcanized rubber and turns waste into treasure. The use of regenerated rubber currently on the market is to mix a certain proportion in fresh rubber to replace part of the fresh rubber to produce various rubber products or to produce so-called low-grade rubber products with lower performance requirements. At present, the production process of recycled rubber is relatively mature, and the main production process is: cutting → washing → rubber breaking → crushing → magnetic separation → dynamic desulfurization → cooling → thin pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L17/00C08J11/10
CPCY02W30/62
Inventor 孔德威
Owner 南京金腾橡塑有限公司