Method for extracting latex from pole-strength electric field

A strong electric field and latex technology, applied in the field of latex extraction with extremely strong electric field, can solve the problems of intensified corrosion of positive electrode materials, non-negligible electrolysis, and high acidification rate, and achieve the effect of reducing the use of flocculants, superior performance and complete retention.

Inactive Publication Date: 2019-09-06
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] If the uniform electric field commonly used in industry is used to extract latex, there are mainly the following problems: high energy consumption and high acidification rate in the extraction process, electrolysis is dominant in the latex extraction process, followed by electrophoresis
However, when using a device for extracting latex such as a uniform electric field: the early electrolysis cannot be ignored, and the corrosion of the positive electrode material needs to be strengthened.

Method used

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  • Method for extracting latex from pole-strength electric field
  • Method for extracting latex from pole-strength electric field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]Pass 1000g of concentrated natural rubber latex with a mass content of 60% of the dry glue into the extraction device with an extremely strong electric field from one side of the glue inlet. The pole distance between the two rollers is 0.3mm, the electric field strength is 1500000V / m, and the ratio of the strongest electric field strength to the weakest electric field strength is 50. The latex was extracted by an extremely strong electric field to obtain clarified liquid and rubber flakes. The latex was extracted until the residual rubber in the clarified liquid was less than or equal to 0.06g, dried in cold air and packaged to obtain 599.94g of finished rubber.

[0037] 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...

Embodiment 2

[0039] Pass 1000g of natural rubber latex with a dry glue mass content of 30% from one side of the glue inlet into the extraction device with an extremely strong electric field. The device is a two-conductive plate type device with an extremely strong electric field. Adjust the DC voltage 9V and adjust the two poles of the extremely strong electric field plate, so that the distance between one end of the negative electrode and the positive electrode is 0.3mm, the electric field strength is 30000V / m, and the ratio of the strongest electric field strength to the weakest electric field strength is 30. The latex was extracted by an extremely strong electric field to obtain clarified liquid and rubber flakes. The latex was extracted until the residual rubber in the clarified liquid was 0.03 g, dried with hot air, and packaged to obtain 249.97 g of finished rubber.

[0040] Take 100g of the above solid rubber, 5g of ZnO, 2g of stearic acid, 1g of anti-aging agent 1010NA, 30g of N330,...

Embodiment 3

[0042] Pass 3000g of latex rubber with a dry glue mass content of 5% into the extraction device with a very strong electric field from one side of the glue inlet. The distance between the two pole plates is 0.5mm, the electric field strength is 200000V / m, and the ratio of the strongest electric field strength to the weakest electric field strength is 20. The latex was extracted by an extremely strong electric field to obtain clarified liquid and rubber flakes. The latex was extracted until the residual rubber in the clarified liquid was 0.015 g. After washing, infrared drying, and packaging, 149.985 g of finished rubber was obtained.

[0043] 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 properties.

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Abstract

The invention discloses a method for extracting latex from a pole-strength electric field. Latex is introduced into a pole-strength electric field extracting device from a latex inlet in one side, thedistance and current between two poles is regulated to form the pole-strength electric field, the latex is extracted from the pole-strength electric field to obtain a clear liquor and a rubber sheet,a film condensed on a positive pole roller continues to be introduced into a clean device through a traction device to be cleaned, dried in a drying device to obtain constant weight, and packaged into finished rubber. The technology for extracting latex from the pole-strength electric field is simpler, the extraction efficiency is higher, the cost is lower, different from the traditional flocculation technology, no flocculation process is needed, the technology is environmentally friendly, the cost is saved, the rubber ingredient obtained after flocculation is completely reserved, the rubberproduct is excellent in performance, few artificial affect factors of the technology are caused, the product quality is stable, and continuous industrial production is easy to obtain.

Description

technical field [0001] The invention relates to a method for extracting latex by an extremely strong electric field, which is different from the traditional rubber flocculation method and the electric continuous extraction process proposed by our research group, and solves the problems of difficult automatic production, long acid or biological flocculation process cycle, and waste glue. To deal with key problems such as difficulty, while using an extremely strong electric field device, it has further improved the efficiency and extraction rate of latex extraction. The rubber obtained by the method is mainly used in various rubber products, including rubber for automobile tires, rubber filaments, latex products and the like. Background technique [0002] With the rapid development of the automobile industry and other industries, rubber is an indispensable resource, and its production process and product quality have become a research hotspot. The traditional flocculation of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08C1/15C08C1/14
CPCC08C1/14C08C1/15
Inventor 王益庆沈家锋孙思佳张立群
Owner BEIJING UNIV OF CHEM TECH
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