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Method for electro-extracting latex

A latex and electrolysis technology, applied in the field of electrophoretic extraction of latex, can solve the problems of large environmental pollution and high cost, and achieve the effects of less sewage treatment, fewer production steps, and reduced use of flocculants

Active Publication Date: 2019-01-29
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the reverse flocculation process is suitable for industrial continuous production and the product quality is stable, it is inevitable to use a large amount of flocculants, such as sulfuric acid, inorganic salts and other flocculants. Wastewater containing substances such as sulfate radicals needs to be treated, causing great environmental pollution

Method used

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  • Method for electro-extracting latex
  • Method for electro-extracting latex
  • Method for electro-extracting latex

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The positive pole of the continuous latex extraction device uses gold as the deformable film roller material, and the conductive electrode plate is the negative pole. The concentrated natural latex 1000g with a dry rubber mass content of 60% is passed into the continuous latex extraction device from the rubber inlets on both sides. Air is passed into the film roller to pressurize the film roller, so that the film roller is deformed and sealed. The latex in the latex device is continuously extracted, and the DC voltage is adjusted to 1.5V, and the rubber strip condensed on the positive electrode is continuously introduced into the rinse tank through the traction device. After rinsing, the residual amount of rubber in the clarified liquid is 0.5 g, and the finished rubber is obtained in 599.5 g through drying and packaging.

[0032] Take 100g of the above solid rubber, 5g of ZnO, 2g of stearic acid, 1g of anti-aging agent 1010NA, 30g of N330, 1.2g of accelerator CZ, 2g of ...

Embodiment 2

[0034] The positive electrode of the continuous latex extraction device uses platinum as the deformable film roller material, and the conductive electrode plate is the negative electrode. 1000g of natural latex with a dry rubber mass content of 25% is passed into the continuous latex extraction device from the rubber inlets on both sides. Nitrogen gas is fed into the roller to pressurize the film roller, so that the film roller is deformed and sealed, and the latex in the latex device is continuously extracted, and the DC voltage is adjusted to 500V, and the rubber strip condensed on the positive electrode is continuously introduced into the rinse tank through the traction device for rinsing. The residual amount of rubber in the clarified liquid was 0.3g, and 249.7g of finished rubber was obtained after drying and packaging.

[0035] Take 100g of the above solid rubber, 5g of ZnO, 2g of stearic acid, 1g of anti-aging agent 1010NA, 30g of N330, 1.2g of accelerator CZ, 2g of sulf...

Embodiment 3

[0037] The positive pole of the continuous latex extraction device uses platinum as the deformable film roller material, and the conductive electrode plate is the negative pole. 2500g of latex latex with a dry glue mass content of 5% is passed into the continuous latex extraction device from the glue inlets on both sides. Water is passed into the film roller to pressurize the film roller, so that the film roller is deformed and sealed, and the latex in the latex device is continuously extracted, and the DC voltage is adjusted to 100V. The residual amount of rubber in the clarified liquid was 0.6g, and 124.4g of finished rubber was obtained through drying and packaging.

[0038]Take 100g of the above solid rubber, 5g of ZnO, 2g of stearic acid, 1g of anti-aging agent 1010NA, 30g of N330, 1.2g of accelerator CZ, 2g of sulfur, mix the rubber, measure the vulcanization curve and rubber processing performance after parking for 8 hours, vulcanize at 150°C, Measuring mechanical prope...

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Abstract

The invention discloses a method for electro-extracting latex. A deformable film roller is used as a positive electrode and a conductive electrode plate is used as a negative electrode, so that a continuous extraction latex device is formed. Latex is introduced into the continuous extraction latex device from latex inlets at two sides, a DC voltage is adjusted to electro-extract the latex, rubberstrips condensed on the positive electrode is continuously introduced into a rinsing tank for rinsing through a traction device, and then drying and packaging are carried out to obtain finished rubber. The method of the invention has a simple process, the obtained rubber has superior performance while rubber components are completely retained, and the method does not have a flocculation process, is green and friendly to environment, and saves cost. The process is less influenced by human, can realize continuous production, produces products with stable quality, and is easy for industrialization research.

Description

technical field [0001] The invention relates to a method for electro-extracting latex, which simultaneously solves the key problems of automatic production, acid flocculation, waste glue treatment and the like. The rubber obtained by the method is mainly used in the fields of car tread rubber, engineering tread rubber and the like. Background technique [0002] With the gradual increase in demand for tires, rubber resources began to be called the four major industrial raw materials together with coal, steel, and petroleum. The coagulation of latex has an important impact on the quality of rubber. According to the order of feeding, coagulation can be divided into positive flocculation and reverse flocculation. Traditionally, the production of solid rubber such as natural rubber is generally a positive flocculation process in which the flocculant is poured into the latex and the latex is coagulated. The positive flocculation equipment has a simple process, but due to its long...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08C1/14C08F6/22C08L21/00C08K13/02C08K3/22C08K5/09C08K3/06
CPCC08C1/14C08F6/22C08K3/06C08K3/22C08K5/09C08K13/02C08K2003/2296C08L21/00
Inventor 王益庆沈家锋孙思佳张立群
Owner BEIJING UNIV OF CHEM TECH
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