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Reclaimed rubber without adding any auxiliary agent in desulfurization process and preparation method of reclaimed rubber

A technology of reclaimed rubber and additives, applied in the direction of plastic recycling, recycling technology, etc., can solve the problems of waste water, waste gas, low performance of reclaimed rubber, serious pollution, etc., and achieve short production cycle, stable quality and high degree of automation Effect

Inactive Publication Date: 2019-12-20
REBORN ENVIRONMENTAL EQUIP MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the formula for desulfurization in the industry is mainly composed of rubber powder, softener, activator, reinforcing agent, etc. Due to the limitation of process conditions, the reclaimed rubber prepared by this formula has low performance, high cost, and serious pollution during the preparation process. waste water, waste gas

Method used

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  • Reclaimed rubber without adding any auxiliary agent in desulfurization process and preparation method of reclaimed rubber
  • Reclaimed rubber without adding any auxiliary agent in desulfurization process and preparation method of reclaimed rubber
  • Reclaimed rubber without adding any auxiliary agent in desulfurization process and preparation method of reclaimed rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 takes 100 parts of radial all-steel truck tire rubber powder as an example, with a particle size of 30 mesh and no other additives in the formula.

[0024] After preparing the rubber powder to be used, add it to the single-screw feeding screw, and send it into the single-screw through the feeding screw for mechanical shearing and desulfurization. ~60°C, directly enter the twin-screw extruder for mastication through the material distribution screw, the speed is 55-70 rpm, after completing the desulfurization and Mooney reduction process, the sheet is released and packaged, and the sample is taken for tensile test according to the standard.

[0025]

Embodiment 2

[0026] Example 2: The formula rubber powder in Example 2 is 100 parts of radial all-steel truck tire rubber powder, with a particle size of 26 mesh. The preparation method is the same as that in Example 1. After single-screw mechanical shearing and desulfurization, the tensile test is carried out according to the standard, and the performance test results of the reclaimed rubber are obtained.

[0027]

Embodiment 3

[0028] Example 3: The formula rubber powder in Example 3 is 100 parts of radial all-steel truck tire rubber powder, with a particle size of 60 mesh. The preparation method is the same as that in Example 1. After single-screw mechanical shearing and desulfurization, the tensile test is carried out according to the standard, and the performance test results of the reclaimed rubber are obtained.

[0029]

[0030] The main advantages of the present invention are: high automation, high efficiency, high intelligence, and stable quality of reclaimed rubber after desulfurization, which provides a necessary guarantee for the back-end development of other types of reclaimed rubber equipment and processes. During the desulfurization process, there was no significant difference in the power displayed by the machine meter, indicating that the energy consumption of the reclaimed rubber preparation method without any additives did not increase significantly, and was relatively stable.

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Abstract

The invention discloses a preparation method of reclaimed rubber without adding any auxiliary agent in a desulfurization process. The method includes the following specific process steps: 1) preparing100 parts by weight of rubber powder, performing mixing under stirring without the need for a production formula, enabling the prepared rubber powder to directly enter a feeding screw; 2) turning ona single screw rod, feeding the rubber powder, performing desulfurization at a rotating speed of 90-125 rpm, and performing cooling to 50-60 DEG C through a double-layer cooling screw; 3) enabling thecooled material to directly enter a double-screw extruder through a material distribution screw, and performing plasticization at a rotating speed of 55-70 rpm; 4) completing the desulfurization andMooney reduction processes, performing discharge, and performing package; and 5) performing detection according to the group standard of ''E-series reclaimed rubber''. The reclaimed rubber provided bythe invention has better processing performance, tensile strength and elongation at break, no waste gas or waste gas is generated in the production process, and the reclaimed rubber has a short production cycle and low energy consumption, and saves a large amount of manpower and material resources while guaranteeing the extremely-high desulfurization efficiency and effect.

Description

technical field [0001] The invention relates to the technical field of reclaimed rubber production, in particular to a method for preparing reclaimed rubber without adding any auxiliary agent in the desulfurization process. Background technique [0002] According to reports, with the rise of my country's manufacturing industry and the surge in consumption, a large number of waste tires are produced every year. In 2017, there were 340 million used automobile tires, which increased to 380 million in 2018, with a total of 15 million tons. Waste tires are not biodegradable, and a large backlog will cause occupation and huge damage to the natural environment, and the accumulation can easily cause fires and cause secondary pollution. [0003] At the same time, my country's natural rubber resources are extremely scarce. Of the 13 million tons needed in 2018, only 810,000 tons are self-sufficient, and the rest are dependent on imports. Reclaimed rubber is slightly inferior to natu...

Claims

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Application Information

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IPC IPC(8): C08J11/10C08L19/00
CPCC08J11/10C08J2319/00Y02W30/62
Inventor 盛凯周鹏程邹亮朱世杰李青青王喻晶孙贺贺
Owner REBORN ENVIRONMENTAL EQUIP MFG CO LTD