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Preparation method for odorless regenerated rubber

A technology of reclaimed rubber and rubber mixing, which is applied in the direction of plastic recycling and recycling technology, which can solve the problem of high energy consumption and achieve the effects of good processing performance, high tensile strength and moderate Mooney value

Active Publication Date: 2014-11-19
普格三鑫环保资源科技利用开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such energy has not been used to preheat vegetable oil asphalt, resulting in high energy consumption during production

Method used

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  • Preparation method for odorless regenerated rubber

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The desulfurization device used in this embodiment includes at least two desulfurization tanks 1 and vegetable oil softener preheating tanks 5, preferably four desulfurization tanks 1 here. The upper part of the desulfurization tank 1 is provided with a feed port and an exhaust port, and the lower part of the desulfurization tank 1 is provided with a discharge port. The exhaust port of each desulfurization tank 1 is connected to a pipeline A, and the pipeline A on the exhaust port of each desulfurization tank 1 A each communicates with the main pipeline B through a control valve 2, and the main pipeline B communicates with the pressure relief pipeline C through a valve 3. The upper part of the vegetable oil softener preheating tank 5 is provided with a vegetable oil softener inlet 5a and a gas inlet, and the vegetable oil softener is preheated. The lower part of the tank 5 is provided with a vegetable oil softener outlet 5b and a gas outlet, and the vegetable oil softene...

Embodiment 2

[0033] The desulfurization equipment of this embodiment is the same as that of Embodiment 1. The preparation of the odorless reclaimed rubber includes the steps of chemical desulfurization, rubber mixing and molding with tread rubber powder as raw material. Wherein the rubber mixing and molding processes are prior art, and will not be repeated here.

[0034] The desulfurization process is as follows: 1. Put the tread rubber powder into the first desulfurization tank 1, the particle diameter of the tread rubber powder is 30-32 mesh. Then add the preheated vegetable oil softener, environmental protection activator and water.

[0035] The environmental protection activator is prepared from potassium persulfate and fatty acid according to the ratio of weight and number of 3.25:6.75, and the addition amount of the environmental protection activator is 0.29% of the mass of the tread rubber powder.

[0036] The vegetable oil softener is composed of cottonseed oil, rosin, pine tar, ...

Embodiment 3

[0041] The desulfurization equipment of this embodiment is the same as that of Embodiment 1. The preparation of the odorless reclaimed rubber includes the steps of chemical desulfurization, rubber mixing and molding with tread rubber powder as raw material. Wherein the rubber mixing and molding processes are prior art, and will not be repeated here.

[0042] The desulfurization process is as follows: 1. Put the tread rubber powder into the first desulfurization tank 1, the particle diameter of the tread rubber powder is 30-32 mesh. Then add the preheated vegetable oil softener, environmental protection activator and water.

[0043] The environmental protection activator is prepared from sodium persulfate and fatty acid according to the ratio of 3:7 by weight and number, and the addition amount of the environmental protection activator is 0.25% of the mass of the tread rubber powder.

[0044] The vegetable oil softener is composed of cottonseed oil, rosin, pine tar, rapeseed ...

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Abstract

The invention discloses a preparation method for odorless regenerated rubber. The preparation method is characterized in that tread rubber powder, an environment-friendly activator, a vegetable oil softener and water are added in the chemical desulfuration process; the environment-friendly activator is prepared from the following components in parts by weight: 3-3.5 parts of persulfate and 7-6.5 parts of aliphatic acid; the amount of the environment-friendly activator is 0.18%-0.29% of the mass of the tread rubber powder; the vegetable oil softener is prepared from cottonseed oil, colophony, pine tar oil, rap oil, drainage oil and olive oil; the amount of the cottonseed oil, the colophony, the pine tar oil, the rap oil, the drainage oil and the olive oil is 3.6%-4.6%, 0.6%-1%, 1.3%-1.9%, 1%-1.5%, 0.8%-1.4% and 0.7%-1.3% of the mass of the tread rubber powder respectively; the added quantity of water is 17%-20% of the mass of the tread rubber powder. According to the invention, products obtained through the preparation method are odorless without containing benzene compounds, are high in tensile strength, great in elongation and moderate in mooney point, and can reach the national-level standard of regenerated rubber; the products such as shoe soles produced from rubber prepared through the preparation method have no color migration.

Description

technical field [0001] The invention relates to a preparation method of regenerated rubber, in particular to an environmentally friendly and odorless regenerated rubber preparation method. 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 The small molecular structure makes it change from an elastomer to a processable viscoelastic. [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 me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L17/00C08L91/00C08L93/04C08J11/10
CPCY02W30/62
Inventor 夏禄山卢俊
Owner 普格三鑫环保资源科技利用开发有限公司
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