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High-quality regenerated rubber and its production

A recycled rubber, high-quality technology, applied in the field of waste rubber regeneration, can solve the problems of poor quality of recycled rubber, and achieve the effects of long service life, low noise and good environmental protection effect

Inactive Publication Date: 2007-11-21
QINGWEI RUBBER SUQIAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the disadvantages of existing regenerated rubber such as poor quality, the present invention proposes a high-quality regenerated rubber and a preparation method thereof. Become a raw material with high use value that can be applied to the manufacture of high-grade rubber products

Method used

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  • High-quality regenerated rubber and its production

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Embodiment Construction

[0015] The technical process of the method of the present invention is given first: waste tires—crushing—screening—magnetic separation—mixing (adding activator and softener)—desulfurization—rough refining—refining—refining—molding—packaging—finished product.

[0016] Example: take back waste tires, crush them with a crusher, pass through a 40-mesh sieve, and remove impurities such as iron wires in waste tires by magnetic separation, prepare 100 parts of rubber powder, add 3 parts of No. 450 activator and 15 parts of solid coal tar softener After mixing 3 parts of rosin tackifier, enter the desulfurization process, and increase the temperature (about 217°C), pressure (1.8-2MPa) and desulfurization time (2-3 hours) parameters of the traditional dynamic desulfurization process to a temperature of 240- 260°C, the pressure is 2.6-3MPa, and the time is reduced to 60-40 minutes. The desulfurization process is to gradually convert the polysulfides of the rubber powder into monosulfide...

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Abstract

A high-quality regenerated rubber and its production are disclosed. It improves composition and proportion, it adopts high-temperature and pressure desulfurizing method in short time and refining process is added. The tensile strength and breaking extensibility can be increased by 30-60%; it can substitute natural rubber or synthetic rubber and be used as various tyre and raw material of rubber products. It's simple, efficient and smokeless, has excellent abrasive performance, long life, less noise and no refused water discharge.

Description

technical field [0001] The invention relates to the recycling technology of waste rubber, in particular to a method for preparing high-quality regenerated rubber from waste rubber. Background technique [0002] Because the output of raw rubber has its certain limitations, in order to make full use of rubber resources, the preparation and application of reclaimed rubber have been given full attention by the country. Rubber is a random polymer elastomer with a network-like three-dimensional structure formed by the chemical reaction of raw rubber and sulfur under certain conditions. Reclaimed rubber is to make vulcanized rubber return to the original unvulcanized rubber structure, so the process of preparing regenerated rubber must cut off the strong cross-linking points mainly composed of sulfur chains (not to remove sulfur from the rubber). At present, the method of preparing regenerated rubber is often to cut off the main bond of the rubber itself at the same time as the ma...

Claims

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Application Information

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IPC IPC(8): C08L17/00C08J11/10
CPCY02W30/62
Inventor 王士军
Owner QINGWEI RUBBER SUQIAN
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