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Method for preparing regenerated rubber

A technology of regenerated rubber and rubber powder, which is applied in the direction of plastic recycling and recycling technology, which can solve the problems of time-consuming production process of reclaimed rubber, and achieve the effects of low action temperature, excellent performance and good desulfurization effect

Inactive Publication Date: 2015-05-20
南京中配橡塑制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing regenerated rubber, which can solve the problem of time-consuming production process of reclaimed rubber

Method used

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  • Method for preparing regenerated rubber

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Effect test

Embodiment 1

[0019] The preparation method of the present embodiment regenerated rubber comprises the following steps:

[0020] A, prepare rubber powder: clean 1 kilogram of waste rubber, dry, cut glue, pulverize, cross 100 mesh molecular sieves, obtain 0.85 kilogram of rubber powder;

[0021] B. Preparation of desulfurizer: Mix 7 grams of N-methyldiethanolamine and 8 grams of toluene evenly, then add 8 grams of iron oxide, heat up to 35° C., and keep warm for 13 minutes to obtain a desulfurizer;

[0022] C. Desulfurization regeneration: transfer the rubber powder into the ultrasonic extractor, then add desulfurizer and 5 grams of coumarone drop by drop, stir evenly, adjust the ultrasonic power to 800 watts, control the temperature to 30°C, and react for 5 minutes; then heat up to 60°C, react for 6 minutes;

[0023] D. Tablet compression: After the reaction in step C is complete, the resulting product is compressed into tablets to obtain reclaimed rubber.

Embodiment 2

[0025] The preparation method of the present embodiment regenerated rubber comprises the following steps:

[0026] A, prepare rubber powder: clean 10 kilograms of waste rubber, dry, cut glue, pulverize, cross 100 mesh molecular sieves, obtain 8.6 kilograms of rubber powder;

[0027] B. Preparation of desulfurizer: Mix 80 grams of N-methyldiethanolamine and 120 grams of xylene evenly, then add 160 g of iron oxide, heat up to 42° C., and keep warm for 9 minutes to obtain a desulfurizer;

[0028] C. Desulfurization regeneration: transfer the rubber powder into the ultrasonic extractor, then add desulfurizer and 175 grams of rosin drop by drop, stir evenly, adjust the ultrasonic power to 600 watts, control the temperature to 45°C, and react for 2 minutes; then heat up to 70 ℃, react for 3 minutes;

[0029] D. Tablet compression: After the reaction in step C is complete, the resulting product is compressed into tablets to obtain reclaimed rubber.

Embodiment 3

[0031] The preparation method of the present embodiment regenerated rubber comprises the following steps:

[0032] A, prepare rubber powder: clean 50 kilograms of waste rubber, dry, cut glue, pulverize, cross 100 mesh molecular sieves, obtain 48.2 kilograms of rubber powder;

[0033] B. Preparation of desulfurizer: Mix 200 grams of N-methyldiethanolamine and 500 grams of benzene evenly, then add 300 grams of iron oxide, heat up to 50° C., and keep warm for 6 minutes to obtain a desulfurizer;

[0034] C. Desulfurization regeneration: transfer the rubber powder into the ultrasonic extractor, then add desulfurizer and 960 grams of fatty acid drop by drop, stir evenly, adjust the ultrasonic power to 400 watts, control the temperature to 60°C, and react for 3.5 minutes; then raise the temperature to 80 ℃, react for 1 minute;

[0035] D. Tablet compression: After the reaction in step C is complete, the resulting product is compressed into tablets to obtain reclaimed rubber.

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Abstract

The invention discloses a method for preparing regenerated rubber and relates to the technical field of production of regenerated rubber. The method for preparing the regenerated rubber comprises the following steps: cleaning waste rubber, drying, cutting rubber, grinding and sieving with a molecular sieve to obtain rubber powder; uniformly mixing a certain mass of N-methyl diethanolamine and benzene substances, adding iron oxide and carrying out heat preservation to obtain a desulfurizer; transferring the rubber powder into an ultrasonic extraction device, dropwise adding the desulfurizer and a softener, uniformly stirring, carrying out ultrasonic-wave-assisted desulfurization to obtain a product and tabletting the product to obtain the regenerated rubber. According to the method, since the desulfurization is performed by virtue of the ultrasonic-wave-assisted desulfurizer method and the effect temperature is low, the disadvantage that carbon-carbon bonds are easy to rupture at high temperature so that the performances of the regenerated rubber is degraded is avoided and the method has the advantages of short desulfurization time, good desulfurization effect and excellent performance of regenerated rubber.

Description

technical field [0001] The invention relates to the technical field of reclaimed rubber production, in particular to a preparation method of reclaimed rubber. Background technique [0002] With the development of modern society, the consumption of rubber is increasing, and the production of waste rubber is also increasing. However, waste rubber must be regenerated before it can be reused. Regeneration makes waste rubber into treasure and improves its use value. . The traditional reclaimed rubber production process is: waste rubber—washing—coarse crushing—fine crushing—sieving—separating fibers and metal impurities—desulfurization—cleaning—pressing water—drying—kneading—gum filtering—refining—refining— Finished products, and the desulfurization process is the most important part of the reclaimed rubber production process, and the effect of vulcanization is a key factor affecting the quality of reclaimed rubber products. [0003] At present, the methods of recycling waste ru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L17/00C08J11/10C08J11/24C08J11/20C08J11/16
CPCY02W30/62
Inventor 陈永亮
Owner 南京中配橡塑制品有限公司
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