A kind of high-performance insoluble sulfur for rubber and its production method

A production method and high-performance technology, applied in the direction of sulfur preparation/purification, etc., can solve the problems of poor thermal stability and dispersion performance of insoluble sulfur, improve dispersion performance and thermal stability, ensure sulfur content, and ensure polymerization effect Effect

Active Publication Date: 2020-01-10
SHANGHAI JINGHAI ANHUI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the relatively poor heat stability and dispersibility of the insoluble sulfur produced by the existing domestic technology, and provide a high-performance insoluble sulfur for rubber and its production method

Method used

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  • A kind of high-performance insoluble sulfur for rubber and its production method

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Effect test

Embodiment 1

[0035] A kind of production method of high-performance insoluble sulfur for rubber of the present embodiment, comprises the following steps:

[0036] (1) Raw material gasification: using liquid sulfur as raw material, pump it into the gasification furnace for high-temperature gasification treatment;

[0037] (2) quenching treatment: passing the obtained sulfur gas into the quenching liquid for quenching treatment to obtain a viscoelastic polymer;

[0038] (3) tableting and washing: the obtained viscoelastic polymer is subjected to tableting treatment, and washed while pressing;

[0039] (4) Drying, crushing, and sieving: the pressed and washed viscoelastic polymer is placed in an oven for drying, and then the dried product is crushed and sieved to obtain a medium-content insoluble sulfur semi-finished product;

[0040] (5) Extraction: extract medium-content insoluble sulfur semi-finished products, dissolve soluble sulfur, and then separate;

[0041](6) Drying and sieving: th...

Embodiment 2

[0047] A kind of production method of high-performance insoluble sulfur for rubber of the present embodiment, comprises the following steps:

[0048] (1) Raw material gasification: use liquid sulfur as raw material, pump it into the gasification furnace for high-temperature gasification treatment; the temperature of the liquid sulfur raw material used in this embodiment is 146°C, and the gasification in the gasification furnace is controlled The temperature is 697°C, and the outlet gas temperature of the gasifier is 598°C.

[0049] (2) Quenching treatment: Pass the obtained sulfur gas into the quenching liquid for quenching treatment to obtain a viscoelastic polymer, and the quenching liquid is made of FeCl 3 、HNO 3 formulated with water, and FeCl 3 The mass percentage of the total weight of the quenching liquid is 1.2%, HNO 3 The mass percentage of the total weight of the quenching liquid is 3.0%, and the temperature of the quenching liquid is 70°C.

[0050] The gasificat...

Embodiment 3

[0077] A kind of production method of high-performance insoluble sulfur for rubber of the present embodiment, comprises the following steps:

[0078] (1) Raw material gasification: use liquid sulfur as raw material, pump it into the gasification furnace for high-temperature gasification treatment; the temperature of the liquid sulfur raw material used in this embodiment is 150°C, and the gasification in the gasification furnace is controlled The temperature is 680°C, and the outlet gas temperature of the gasifier is 590°C.

[0079] (2) Quenching treatment: Pass the obtained sulfur gas into the quenching liquid for quenching treatment to obtain a viscoelastic polymer, and the quenching liquid is made of FeCl3 、HNO 3 formulated with water, and FeCl 3 The mass percentage of the total weight of the quenching liquid is 1.3%, HNO 3 The mass percentage of the total weight of the quenching liquid is 2.5%, and the temperature of the quenching liquid is 75°C.

[0080] (3) Tabletting ...

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Abstract

The invention discloses high-performance insoluble sulfur for rubber and a method for producing the high-performance insoluble sulfur, and belongs to the technical field of sulfur production. The method for producing the high-performance insoluble sulfur for the rubber includes raw material gasification, quenching treatment, tablet compressing, washing, drying, smashing, sieving, extraction, drying, sieving and finished product oil filling working procedures. The high-performance insoluble sulfur and the method have the advantages that products obtained after extraction and stabilizers comprising ammonium persulfate and sodium ethyl xanthate are uniformly mixed with one another and then are subjected to drying treatment with one another, certain quantities of fatty alcohol polyoxyethyleneether and poly-butyl ethylene are added into the products during oil filling, accordingly, the thermal stability and the dispersing properties of the high-performance insoluble sulfur obtained by theaid of the method can be effectively improved, and application effects of the high-performance insoluble sulfur can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of sulfur production, and more specifically relates to a high-performance insoluble sulfur for rubber and a production method thereof. Background technique [0002] Insoluble sulfur, referred to as IS in English, is a homopolymer of sulfur, which is chemically and physically inert. It can effectively reduce the accumulation of sulfur in the rubber compound, reduce the scorching tendency of the rubber compound during storage, and prevent the surface of rubber products and semi-finished products from "spraying". It is widely used in tire manufacturing, especially in the production of radial tires. In recent years, with the improvement of road traffic and the development of the automobile industry, the ever-increasing speed of automobiles has put forward higher requirements for tires. Radial tires will replace ordinary bias rubber tires and become an inevitable trend in the development of the tire industry. As ...

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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