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Process method for recycling rubber by utilizing light energy

A technology for recycling rubber and process methods, which is applied in the field of rubber recycling using light energy, which can solve the problems of complex formula, unfavorable energy saving and environmental protection, and long time, and achieve the effects of simple process flow, reduced labor expenditure, and high safety index

Active Publication Date: 2014-04-23
HEBEI RICHWAY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Patent CN200410066712.X discloses a high-temperature continuous regeneration process of butyl rubber, which can realize continuous regeneration of rubber, but this process needs to be carried out at high temperature, and various treatments such as softeners and activators need to be added, which is not conducive to energy saving Environmental protection, increasing the cost of waste rubber recycling and the risk of production
[0008] Patent CN201110053062.5 discloses a method for preparing chlorinated rubber with water-phase photocatalyst. This method uses purified water as the medium, and requires complex process steps such as acidification and deacidification. Obviously, there are problems of waste of resources and increased costs. And the continuity of production is poor
Its photocatalytic reaction is carried out for 12-20h under the light of 300-380nm, which takes a long time and requires the synergistic effect of photocatalyst and photocatalytic accelerator. The formula is complex and takes a long time, which is not conducive to the use in industrialized mass production

Method used

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  • Process method for recycling rubber by utilizing light energy
  • Process method for recycling rubber by utilizing light energy
  • Process method for recycling rubber by utilizing light energy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation of embodiment 1 rubber powder

[0028] At normal temperature, the waste tire film is cut and rolled by mechanical shear force and finally pulverized into powder. The rubber powder of the present invention is prepared through the following steps:

[0029] (1) Use a rubber breaker to break the waste tire film into small pieces about 5 cm square.

[0030] (2) Use a coarse crusher to break small pieces of 5 cm square into coarse rubber particles with a particle size of 2 cm. Finally, use a magnetic separator to separate impurities such as steel wires in these coarse rubber particles, and use a wind separator to remove those useless fibers.

[0031] (3) Send the above-mentioned coarse rubber particles from which steel wires and fibers have been filtered out into a rubber fine crusher, and further grind, screen and separate to obtain 50-60 mesh rubber powder.

Embodiment 2

[0033] Stir and mix 100 parts of rubber powder and 15 parts of nano-zinc oxide with a high-speed plasticizing reaction unit. First, adjust the speed of the reaction unit to 1000 rpm. No need for heating process), stop stirring, put the material into the cooling mixer, the speed is 35 rpm, and the temperature is about 30°C for discharging. Put the stirred material into the mixer, and irradiate the material with ultraviolet light for different durations. The ultraviolet lamp used is a 3KW high-pressure mercury lamp, and the ultraviolet wavelength is 365nm.

[0034] Adjust the roller distance of the open mill to the minimum, put in the rubber powder, and after about 7-8 minutes of rolling, the rubber powder is no longer loose and forms a thin sheet, then, increase the roller distance of the open mill, and put the pressed Thin slices are put in, and thick slices are formed after pressing 10 times to obtain reclaimed rubber.

[0035] In order to test the physical properties of th...

Embodiment 3

[0042] Use a high-speed plasticizing reaction unit to mix 100 parts of rubber powder and 15 parts of nano-zinc oxide evenly. First, adjust the speed of the reaction unit to 1000 rpm. No heating process), stop stirring, put the material into the cooling unit, the speed is 35 rpm, and the temperature is about 30°C for discharging. Put the stirred material into the mixer, and irradiate the material with ultraviolet light for different durations. The ultraviolet lamp used is a 3KW high-pressure mercury lamp, and the ultraviolet wavelength is 365nm.

[0043] Adjust the rotation speed of the main engine of the twin-screw extruder to 220 rpm, and the feed rotation speed to 15 rpm. There are 7 heating and cooling zones in the twin-screw extruder, and the temperatures are 55°C—68°C—76 ℃—75°C—78°C—75°C—41°C, the temperature in each area is not higher than 100°C, and the normal temperature and pressure production state is realized.

[0044] After the rubber powder came out of the twin-...

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Abstract

The invention relates to a method for recycling waste rubber and in particular relates to a process method for recycling rubber by utilizing light energy. According to the process method, the waste rubber is used as a raw material, and cross bond in the rubber is fractured to generate reclaimed rubber under the action of mechanical shearing, a photocatalyst and light. By utilizing the process method, the waste rubber is continuously regenerated to reused high-performance rubber by utilizing the light energy, the process is simple, the entire process can be completed at normal temperature and normal pressure, energy consumption is low, environment is protected, and safety index is high. By utilizing the process method, continuous production can be realized, and human spending can be reduced after automation control is introduced.

Description

technical field [0001] The invention relates to a method for recycling waste rubber, in particular to a process for recycling rubber by utilizing light energy. Background technique [0002] After entering the 21st century, the global industrialization development has shown an upward trend, and the rubber industry has also accelerated the pace of development. The demand for rubber in the world has increased rapidly every year, so a large amount of waste rubber has also been produced. As a polymer compound, waste rubber is not easy to degrade in nature, and improper treatment will cause environmental pollution. Therefore, promoting the environmental protection recycling of rubber resources and developing a circular economy is an inevitable way to ensure the healthy development of China's rubber industry. [0003] In today's society, disposing of waste rubber is one of the serious difficulties people face. In order to meet the ever-increasing performance requirements of rubbe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/10C08J11/16C08L17/00
CPCY02W30/62
Inventor 马瑞刚徐波马亦骁王媛
Owner HEBEI RICHWAY TECH
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