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Reclaimed rubber process method special for high-temperature steam method

A process method, high-temperature steam technology, applied in the field of rubber recycling to achieve the effect of accelerating the regeneration process, improving economic benefits, and inhibiting gelation

Inactive Publication Date: 2011-11-23
徐建雄
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Preventing the desulfurization temperature of reclaimed rubber from being too high, and avoiding the difficulty in controlling the desulfurization temperature of reclaimed rubber production, resulting in excessive cracking, have been prominent and difficult to solve production process problems in this technical field for many years.

Method used

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Embodiment Construction

[0022] The high-temperature steam method special reclaimed rubber process of the present invention, the waste vulcanized rubber powder with a particle size of 20-40 meshes is placed in a high-pressure reaction kettle, and softeners, activators, tackifiers, deodorants,

[0023] Expansion agent, and then the water vapor with a pressure of 0.8 Mpa is introduced first, so that the water vapor fills the middle of the tank to form a tank space filled with water vapor;

[0024] Then add a certain amount of water to supplement the lack of water vapor in the tank. After pressurization, the temperature in the tank is 260--280 ° C, and keep warm for 20-40 minutes;

[0025] Then release the pressure, remove the water vapor, and immediately leave the tank after the water vapor is exhausted, cool down and start refining;

[0026] Described softening agent is coal tar, and its percentage by weight is 15--25%;

[0027] The activator is activator 450, its weight percentage is 0.3--0.6%;

[0...

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Abstract

The invention relates to a reclaimed rubber process method special for a high-temperature steam method. The method is characterized by comprising the following steps of: filling waste vulcanized rubber powder with particle size of 20-40 meshes in a high-pressure reaction kettle; meanwhile, adding a softening agent, an activating agent, a thickening agent, a deodorant and an expanding agent; introducing steam with pressure of 0.8Mpa; adding a certain amount of water; and pressurizing and then keeping the temperature in the reaction kettle at 260-280 DEG C for 20-40 minutes, wherein the softening agent is 15-25 percent by weight of coal tar; the activating agent is 0.3-0.6 percent by weight of activating agent 450; the thickening agent is 3-5 percent by weight of rosin; the expanding agent is 2-6 percent by weight of dipentene; the deodorant is 0.3-0.6 percent by weight; and the balance is the waste vulcanized rubber powder. The method has the advantages of easily controlled desulphurization temperature and superior reclaimed rubber performance.

Description

(1) Technical field [0001] The invention relates to a process method for special regenerated rubber by a high-temperature steam method, which belongs to the field of rubber recycling. (2) Background technology [0002] As a new science, recycled rubber production technology is a system engineering integrating physics, chemistry, mechanics, materials science and environmental protection science. Because waste tire rubber can neither be regenerated by the same production process as scrap steel, waste non-ferrous metal and waste paper, nor can it be regenerated in a conventional and simple way like waste plastic. The regeneration of waste tire rubber is much more difficult than the above waste resources. It requires a unique regeneration process. In order to restore vulcanized rubber to the properties of unvulcanized rubber by regeneration, it is necessary to try to cut off the formed, strong cross-linking points mainly composed of sulfur bonds, which is an indispensable "des...

Claims

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Application Information

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IPC IPC(8): C08L17/00C08L93/04C08K5/01
Inventor 白景星徐建雄陈刚
Owner 徐建雄
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