A kind of production technology of high-grade insoluble sulfur

A production process, high-grade technology, applied in the direction of sulfur preparation/purification, etc., can solve the problems of poor dispersion of insoluble sulfur, and achieve the effect of ensuring uniform dispersion, ensuring S content, and preventing the decline of sulfur content

Active Publication Date: 2020-04-03
SHANGHAI JINGHAI ANHUI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the relatively poor dispersibility of the obtained insoluble sulfur produced by the existing domestic process, and provide a production process for the insoluble sulfur

Method used

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  • A kind of production technology of high-grade insoluble sulfur

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Comparison scheme
Effect test

Embodiment 1

[0033] A production process of high-grade insoluble sulfur in this embodiment uses medium-grade insoluble sulfur as a raw material, and after extraction, drying, sieving and oil-filling treatment, a high-grade insoluble sulfur product is obtained, wherein a certain amount of sulfur is added to it during the oil-filling treatment. amount of fatty alcohol polyoxyethylene ether, wherein the addition amount of fatty alcohol polyoxyethylene ether is 0.41% of the total weight of the obtained high-grade insoluble sulfur finished product.

[0034] The dispersibility of insoluble sulfur products is very important for their application in rubber products, such as tires. Among them, the sulfur with poor dispersion performance will generate static electricity, which will completely cover the surface of the rubber compound and cannot be effectively bonded with the rubber; while the sulfur with good dispersion performance can hardly see sulfur under the electron microscope, and will fully bo...

Embodiment 2

[0048] A production process of high-grade insoluble sulfur in this embodiment uses medium-grade insoluble sulfur as a raw material, and after extraction, drying, sieving and oil-filling treatment, a high-grade insoluble sulfur product is obtained, wherein a certain amount of sulfur is added to it during the oil-filling treatment. amount of fatty alcohol polyoxyethylene ether, wherein the addition amount of fatty alcohol polyoxyethylene ether is 0.6% of the total weight of the obtained high-grade insoluble sulfur finished product. The extract of this embodiment selects CS 2 , After extraction, use hot water heating to raise the product temperature from 15°C to 60°C for drying treatment. The oil-filling treatment is to stir and mix the high-grade insoluble sulfur semi-finished product and rubber oil evenly. The rubber oil is naphthenic oil, and the mixing mass percentages of the high-grade insoluble sulfur semi-finished product and rubber oil are 79% and 21% respectively.

[00...

Embodiment 3

[0057] A production process of high-grade insoluble sulfur in this embodiment uses medium-grade insoluble sulfur as a raw material, and after extraction, drying, sieving and oil-filling treatment, a high-grade insoluble sulfur product is obtained, wherein a certain amount of sulfur is added to it during the oil-filling treatment. amount of fatty alcohol polyoxyethylene ether, wherein the addition amount of fatty alcohol polyoxyethylene ether is 0.49% of the total weight of the obtained high-grade insoluble sulfur finished product. The extract of this embodiment selects CS 2 , After extraction, use hot water heating to raise the product temperature from 15°C to 60°C for drying treatment. The oil-filling treatment is to stir and mix the high-grade insoluble sulfur semi-finished product and rubber oil evenly. The rubber oil is naphthenic oil, and the mixing mass percentages of the high-grade insoluble sulfur semi-finished product and rubber oil are 80% and 20% respectively.

[0...

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Abstract

The invention discloses a production technology of high-grade insoluble sulfur, and belongs to the technical field of sulfur production. The production technology of the high-grade insoluble sulfur ischaracterized in that a high-grade insoluble sulfur finished product is obtained by taking middle-grade insoluble sulfur as a raw material and through the steps of extracting, drying, sieving and oilfilling treatment, wherein a certain amount of fatty alcohol-polyoxyethylene ether is added during the oil filling treatment. According to the production technology disclosed by the invention, a certain amount of the fatty alcohol-polyoxyehtylene ether is added during the oil filling treatment of a product, so that the dispersion performance of a high-grade insoluble sulfur product which is finally obtained can be effectively increased, the dispersion uniformity of the high-grade insoluble sulfur product in rubber is ensured, and an application effect of insoluble sulfur is further ensured.

Description

technical field [0001] The invention belongs to the technical field of sulfur production, and more specifically relates to a production process of insoluble sulfur. Background technique [0002] Insoluble sulfur, also known as elastic sulfur or polymeric sulfur, is a linear polymer formed by the polymerization of a large number of sulfur atoms. The relative molecular weight can reach tens of thousands. It is a non-toxic, flammable yellow powder obtained because it is insoluble in carbon disulfide. It is an allotrope and a polymer modified variety of high-polymerization form of common sulfur. At present, the vast majority of insoluble sulfur is used in the rubber industry, as a high-grade accelerator and vulcanizing agent in the rubber industry, it is widely used in the production of tires and other rubber composite products, such as tire carcass rubber, buffer rubber It can also be used in rubber materials such as cables, rubber rollers, oil seals, rubber shoes and other ru...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B17/12
CPCC01B17/12
Inventor 陈杰胡建敏
Owner SHANGHAI JINGHAI ANHUI CHEM
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