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Modified sulfur particles and its preparation method and application

A sulfur particle modification technology, applied in building components, building insulation materials, construction, etc., can solve the problems of uneven mixing, poor suppression effect, high production cost, etc., achieve good effect, facilitate storage and transportation, and improve production efficiency Effect

Inactive Publication Date: 2016-01-13
XINJIANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a modified sulfur particle and its preparation method and application, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the existing problem of sulfur asphalt The production cost of adding free radical inhibitors to the mixture is high, and the mixing is uneven, resulting in poor inhibition effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1, the modified sulfur particles, the raw material contains 80 to 100 parts of sulfur and 1 to 10 parts of hydrogen sulfide inhibitor in parts by weight; the modified sulfur particles are obtained according to the following steps: the first step, the The required amount of sulfur and hydrogen sulfide inhibitor is added to the reaction vessel and mixed evenly, and then the mixed sulfur and hydrogen sulfide inhibitor are heated in an oil bath at 130°C to 140°C, and the sulfur and hydrogen sulfide inhibitor are melted. After reacting for 25 minutes to 35 minutes, a bright gray-black mixture is obtained; in the second step, the reacted mixture in the reaction vessel is poured into cold water to cool and disperse into solid particles, and the modified sulfur particles are obtained after filtering. The modified sulfur particles obtained by the present invention are dense and uniform, and are solid particles at normal temperature, with a particle diameter of 3 mm t...

Embodiment 2

[0017] Embodiment 2, the modified sulfur particles, the raw material contains 80 parts or 100 parts of sulfur, 1 part or 10 parts of hydrogen sulfide inhibitor in parts by weight; the modified sulfur particles are obtained according to the following steps: the first step, the The required amount of sulfur and hydrogen sulfide inhibitor is added to the reaction vessel and mixed evenly, and then the mixed sulfur and hydrogen sulfide inhibitor are heated in an oil bath at 130°C or 140°C until the sulfur and hydrogen sulfide inhibitor are melted React for 25 minutes or 35 minutes, and then obtain a bright gray-black mixture; in the second step, pour the reacted mixture in the reaction vessel into cold water to cool and disperse into solid particles, and obtain modified sulfur particles after filtration. The modified sulfur particles obtained by the present invention are dense and uniform, and are solid particles at normal temperature, with a particle diameter of 3 mm to 5 mm, sta...

Embodiment 3

[0018] Embodiment 3, as the optimization of above-mentioned embodiment, the hydrogen sulfide inhibitor of embodiment 3 comprises hydrogen sulfide main inhibitor and hydrogen sulfide synergistic inhibitor; The mass percentage of hydrogen sulfide main inhibitor in hydrogen sulfide inhibitor is 1 % to 9%.

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Abstract

The invention relates to the technical field of sulfur, and relates to a modified sulfur granule and its preparation method and application; the raw material of the modified sulfur granule contains 80 to 100 parts of sulfur and 1 to 10 parts of hydrogen sulfide inhibitor in parts by weight; The modified sulfur granules are obtained according to the following steps: in the first step, add the required amount of sulfur and hydrogen sulfide inhibitor into the reaction vessel and mix them uniformly, then place the uniformly mixed sulfur and hydrogen sulfide inhibitor at 130°C to Heating in an oil bath at 140°C, the sulfur and hydrogen sulfide inhibitors are melted and reacted for 25 to 35 minutes before turning into bright gray black. In the present invention, sulfur and hydrogen sulfide inhibitors are heated and reacted in an oil bath, and the reacted mixture is poured into cold water and filtered to obtain modified sulfur particles; the present invention has the advantages of easy-to-obtain raw materials, stable physical and chemical properties, convenient storage and transportation, and The combination of asphalt and hydrogen sulfide has a good suppression effect, which reduces the production cost and improves the production efficiency.

Description

technical field [0001] The invention relates to the technical field of sulfur, and relates to a modified sulfur particle, a preparation method and application thereof. Background technique [0002] In order to meet the ever-increasing needs of road traffic, improve the design and construction quality of the road surface, especially the quality of the asphalt surface layer, so that it can meet the requirements of bearing capacity, durability, comfort, and safety within the design period, road scientific and technological personnel work in A lot of research has been done on the surface layer binder, various formulations of modified asphalt have been widely used, and some new modification methods are also being studied continuously. As early as a century ago, people knew that sulfur has the characteristics of improving the quality of asphalt. Sulfur modification was widely used in the United States and Canada in the 1970s, but the suppression effect of hydrogen sulfide was not ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08K9/02C08K3/06
Inventor 陆江银李国峰曹敏娜雷振
Owner XINJIANG UNIVERSITY
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