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A method for preparing environmentally friendly high-strength tire reclaimed rubber using microwaves

A reclaimed rubber and microwave technology, applied in recycling technology, plastic recycling, etc., can solve the problems of long time, low efficiency, and low tensile strength of reclaimed rubber, and achieve energy saving, environmental friendliness, and outstanding economic and social benefits Effect

Active Publication Date: 2018-05-25
XUZHOU COLLEGE OF INDAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current regeneration process time of conventional reclaimed rubber is about 4 hours, and the steam pressure is 1MP a left and right, long time, low efficiency
The tensile strength of conventional reclaimed rubber is low, generally 5-8MPa

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Each raw material and its mass parts are:

[0023] Waste rubber powder 100.00

[0024] Softener naphthenic oil 10.00

[0025] Composite Activation Rejuvenator 420 / M 0.70

[0026] Coupling agent KH570 2.00

[0027] The composite activated regenerant 420 / M is composed of activated regenerated agent 420 and activated regenerated agent M, and is formulated according to the mass ratio of regenerated agent 420:regenerated agent M=1:1.

[0028] Its preparation method, carry out as follows:

[0029] Step 1) Screening: use waste truck tires and / or engineering tires with tensile strength ≥ 25 MPa and elongation at break ≥ 500%, and prepare waste rubber powder of about 20 meshes by crushing;

[0030] Step 2) Put the waste rubber powder on the open mill, add softener naphthenic oil, compound regeneration agent 420 / M, coupling agent KH570 in turn, carry out thin pass mixing for 10 minutes, and control the temperature of the open mill at 40±5 ℃, the roller distance is controlled...

Embodiment 2

[0037] Each raw material and its mass parts are:

[0038] Waste rubber powder 100.00

[0039] Softener pine tar 8.00

[0040] Composite activating regeneration agent 420 / M 0.50

[0041] Coupling agent KH570 2.50

[0042] The composite activated regenerant 420 / M is composed of activated regenerated agent 420 and activated regenerated agent M, and is formulated according to the mass ratio of regenerated agent 420:regenerated agent M=1:1.

[0043] Its preparation method, carry out as follows:

[0044] Step 1) Screening: use waste truck tires and / or engineering tires with tensile strength ≥ 25 MPa and elongation at break ≥ 500%, and prepare waste rubber powder of about 30 meshes by crushing;

[0045] Step 2) Put the waste rubber powder on the open mill, add softener pine tar, compound regeneration agent 420 / M, and coupling agent KH570 in sequence, and carry out thin-pass mixing for 10 minutes. The temperature of the open mill is controlled at 40±5°C , the roller distance is c...

Embodiment 3

[0052] Each raw material and its mass parts are:

[0053] Waste rubber powder 100.00

[0054] Softener pine tar 10.00

[0055]Composite Activation Rejuvenator 420 / M 0.60

[0056] Coupling agent KH570 1.50

[0057] The composite activated regenerant 420 / M is composed of activated regenerated agent 420 and activated regenerated agent M, and is formulated according to the mass ratio of regenerated agent 510:regenerated agent M=1:1.

[0058] Its preparation method, carry out as follows:

[0059] Step 1) Screening: use waste truck tires and / or engineering tires with tensile strength ≥ 25 MPa and elongation at break ≥ 500%, and prepare waste rubber powder of about 30 meshes by crushing;

[0060] Step 2) Put the waste rubber powder on the open mill, add softener pine tar, compound regeneration agent 420 / M, and coupling agent KH570 in sequence, and carry out thin-pass mixing for 10 minutes. The temperature of the open mill is controlled at 40±5°C , the roller distance is controll...

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Abstract

The invention discloses a method for preparing environment-friendly high-strength tire reclaimed rubber through microwaves. The preparation method includes the following steps that rubber powder obtained after waste products are crushed, softener, compound regenerant and a coupling agent are mixed to prepare initially-modified rubber powder, wherein the tensile strength of the rubber powder is larger than or equal to 25 MPa, and the elongation at break is larger than or equal to 500%; microwave reclaimed rubber is prepared under the conditions that the radiation frequency is 2,450 MHz, the microwave radiation power ranges from 800 W to 1,200 W and the microwave radiation time is controlled to range from 1 min 40 s to 2 min 30 s, the microwave reclaimed rubber immediately enters a cooling device to be cooled and refined, and then the reclaimed rubber is obtained. Compared with a traditional waste rubber high-temperature regeneration method, by means of the method for preparing the environment-friendly high-strength tire reclaimed rubber, a molecular backbone is protected against damage, cross bonds can be broken, regeneration time is short, regeneration temperature is low, production efficiency is 5 times that of the traditional method, the performance of recycled rubber is reserved, and remarkable economic benefits and social benefits are achieved.

Description

technical field [0001] The invention relates to a method for preparing environmentally friendly high-strength tire reclaimed rubber by using microwaves, and belongs to the field of reclaimed rubber preparation. Background technique [0002] The amount of waste rubber materials is second only to waste plastics among waste and old polymer materials. Among them, the annual scrap volume of automobile tires in the world is more than 1 billion, and that in my country is 50-60 million. The recycling of waste rubber is mainly waste tires, and others include waste rubber shoes and inner tubes, etc. The utilization of waste rubber is conducive to protecting the environment, realizing the reuse of resources, and is conducive to the sustainable development of social economy. [0003] Conventional reclaimed rubber currently needs to be regenerated in a regeneration tank during the regeneration process, which requires heating and stirring, cleaning, dehydration, refining and other process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J11/28C08L17/00B29B13/08B29B13/04B29B7/74
CPCY02W30/62
Inventor 王艳秋祝木伟张芳儒张恒中徐云慧翁国文丛后罗
Owner XUZHOU COLLEGE OF INDAL TECH
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