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A method for continuously extracting latex

A latex and continuous technology, applied in the field of continuous latex extraction, can solve the problems of large environmental pollution and high cost, and achieve the effect of large environmental pollution, high cost, and easy industrialization research

Active Publication Date: 2020-05-15
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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  • A method for continuously extracting latex
  • A method for continuously extracting latex
  • A method for continuously extracting latex

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The positive electrode of the continuous latex extraction device uses gold as the roller material, and the conductive electrode plate is the negative electrode. 1000 g of concentrated natural latex with a dry rubber mass content of 25% is passed into the continuous latex extraction device from the rubber inlet, and the distance between the two rollers is adjusted. Feed the latex into full contact, adjust the DC voltage to 500V, and continuously introduce the film film condensed on the positive electrode into the spray cleaning device through the traction device for cleaning. The residual rubber in the clarified liquid is 0.2g. After drying and packaging, 249.8g of finished rubber is obtained.

[0031] 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...

Embodiment 2

[0033] The positive electrode of the continuous latex extraction device uses platinum as the roller material, and the conductive electrode plate is the negative electrode. 1000g of natural latex with a dry rubber mass content of 60% is passed into the continuous latex extraction device from the rubber inlet, and the distance between the two rollers is adjusted. Fully contact with the latex, adjust the DC voltage 1.5V, and continuously introduce the film film condensed on the positive electrode into the spray cleaning device through the traction device for cleaning. The residual rubber in the clarified liquid is 0.4g. After drying and packaging, 599.6g of finished rubber is obtained. 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 ...

Embodiment 3

[0035] The positive electrode of the continuous latex extraction device uses platinum as the roller material, and the conductive electrode plate is the negative electrode. 2500 g of skim latex with a dry rubber mass content of 6% is passed into the continuous latex extraction device from the glue inlet, and the distance between the two rollers is adjusted. Feed the latex into full contact, adjust the DC voltage 110V, and continuously introduce the film film condensed on the positive electrode into the spray cleaning device through the traction device for cleaning. The residual rubber in the clarified liquid is 0.4g, and the finished rubber is 149.6g after drying and packaging. 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 proper...

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Abstract

The invention discloses a method capable of continuously extracting latex. The method comprises the following steps of using a continuous latex extracting device composed of electrically conductive rollers as an anode and a cathode, introducing the latex into a continuous electrolysis device from a rubber inlet, regulating a distance between the rollers until the anode and the cathode are both incontact with the latex, regulating a direct-current voltage to electrically extract rubber, towing a filmy rubber sheet condensed out on the anode to a conveying device through a scraping plate, conveying the filmy rubber sheet to a spray cleaning device through the conveying device to carry out cleaning, and thus obtaining a finished product rubber through drying and packaging. The method provided by the invention is simple in process; the obtained rubber is excellent in performance; meanwhile, components of the rubber are completely reserved; a flocculation procedure is not needed; the method is green and environment-friendly; and the cost is saved. The process of the method has few human influence, can be used for realizing continuous production, is stable in product quality, and is easy for industrialized research.

Description

technical field [0001] The invention relates to a method for continuously 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] 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-term coagulation process, the quality of the product is not easy to control , The product is unstable; the positive flocculation process has many shortcomings that limit its industrialization, the main shortcomings are poor continuous production capacity, strong smell of rubber products, and great corrosion to equipment. Pour the latex into the fl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08C1/14
CPCC08C1/14
Inventor 王益庆孙思佳沈家锋张立群
Owner BEIJING UNIV OF CHEM TECH