Waste tire tread regeneration method

A tread and tread rubber technology, applied in the direction of products, educts, reagents, etc., can solve the problems of long production cycle, waste water, waste gas, and low efficiency, and achieve the effect of low efficiency and high-quality regeneration

Inactive Publication Date: 2017-05-31
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The physical and mechanical properties of reclaimed rubber produced by this method are better, and the amount of additives used is less, but a high-temperature desulfurization will still produce waste water and waste gas, and the production cycle is long and the efficiency is low.
[0005] For the above problems, there is currently no effective solution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The collected waste tread rubber is coarsely crushed, magnetically separated, finely crushed, and magnetically separated at room temperature to obtain 15-20 mesh waste tread rubber particles. Take 100 parts of waste tread rubber particles, 6 parts of environmentally friendly operating oil, and regenerate 2 parts of activator, 2 parts of high-efficiency activator 580, and 2 parts of aldehyde-amine accelerators were put into a shear type internal mixer together, the speed of internal mixer was 50r / min, the temperature was 65°C, and internal mixing was carried out for 10 minutes.

[0023] The sizing material obtained from the upstream is directly discharged into the downstream shearing type internal mixer, the rotation speed is 60r / min, the temperature is 55°C, and the internal mixing time is 10min.

[0024] The rubber material discharged from the downstream internal mixer is introduced into the refiner, the roller temperature is 50°C, the roller distance is 0.5mm, after 10...

Embodiment 2

[0026] The collected waste tread rubber is coarsely crushed, magnetically separated, finely crushed, and magnetically separated at room temperature to obtain 15-20 mesh waste tread rubber particles. Take 100 parts of waste tread rubber particles, 6 parts of environmentally friendly operating oil, and regenerate 2 parts of activator, 2 parts of high-efficiency activator 580, and 2 parts of aldehyde-amine accelerators were put into a shear type internal mixer together, the speed of internal mixer was 50r / min, the temperature was 65°C, and internal mixing was carried out for 10 minutes.

[0027] The rubber material obtained from the upstream is directly discharged into the downstream intermeshing internal mixer, the speed is 60r / min, the temperature is 80°C, and the internal mixing time is 15min.

[0028] The rubber material discharged from the downstream internal mixer is introduced into the refiner, the roller temperature is 50°C, the roller distance is 0.5mm, after 10 minutes o...

Embodiment 3

[0030] The collected waste tread rubber is coarsely crushed, magnetically separated, finely crushed, and magnetically separated at room temperature to obtain 15-20 mesh waste tread rubber particles. Take 100 parts of waste tread rubber particles, 6 parts of environmentally friendly operating oil, and regenerate 2 parts of activator, 2 parts of high-efficiency activator 580, and 2 parts of aldehyde-amine accelerators were put into a shearing mixer at the same time. The speed of the mixer was 50r / min, and the temperature was 65°C for 15 minutes.

[0031] The sizing material obtained from the upstream is directly discharged into the downstream intermeshing internal mixer, the speed is 60r / min, the temperature is 80°C, and the internal mixing time is 10min.

[0032] The rubber material discharged from the downstream internal mixer is introduced into the refiner, the roller temperature is 65°C, and the roller distance is 0.5mm. After 10 minutes of refining, the sheet is discharged, ...

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Abstract

The invention discloses a waste tire tread regeneration method. The waste tire tread regeneration method comprises the following steps: preparing materials, wherein the formula comprises 100 parts of waste tire tread rubber particles of 15 to 20 meshes, 6 parts of environmentally-friendly operating oil, 2 parts of a regenerant, 2 parts of an efficient activating agent 580 and 2 parts of an aldehyde amine accelerant; mixing in a first stage: putting the materials in a tandem type internal mixer, and carrying out first-stage shearing and mixing, wherein the time lasts for 10 to 15 min, the temperature is 65 DEG C, and the rotating speed is 50 r / min; mixing in a second stage: directly discharging a sizing material mixed in the first stage into a downstream internal mixer, and carrying out second-stage shearing and kneading, wherein the time lasts for 10 to 15 min, the temperature is 55 to 80 DEG C, and the rotating speed is 60 r / min; refining: discharging a sizing material mixed in the second stage into a refining machine, refining for 10 min for film discharging, and preparing regenerative rubber. The method has the beneficial effects that low-temperature, continuous and high-quality regeneration of waste tire tread rubber is realized through a shearing mixing effect of a first-stage internal mixer rotor and a supplementary shearing and kneading effect of second-stage internal mixer rotor as well as refining forming of the refining machine, so that the problems that a traditional regeneration method is low in efficiency and high in labor intensity and pollutes the environment are solved.

Description

technical field [0001] The invention relates to the technical field of regenerated rubber, in particular to a method for regenerating waste tread. Background technique [0002] As the world's largest rubber consumer, my country's production of waste rubber is increasing day by day. As the main source of waste rubber, waste tires are expected to exceed 20 million tons in 2020. At the same time, my country's rubber resources are very scarce, and nearly half of the synthetic rubber and natural rubber depend on imports. Therefore, the recycling of waste rubber resources has important economic significance. my country's waste rubber is mainly used for the production of reclaimed rubber. At present, the dynamic desulfurization method is mainly used for regeneration. The dynamic desulfurization tank has high energy consumption, large floor area, low efficiency, and discharges a large amount of high-temperature exhaust gas during unloading, polluting the environment, and is facing b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/04C08L17/00C08L91/00
CPCC08J11/04C08J2317/00C08L17/00C08L2205/03C08L91/00Y02P20/143Y02W30/62
Inventor 汪传生郭磊袁浪杨洪于边慧光
Owner QINGDAO UNIV OF SCI & TECH
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