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Heat stabilizer for road asphalt

A heat stabilizer and road asphalt technology, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of loss of various indicators, reduction of softening point and ductile film extension, poor thermal stability of road asphalt, etc. Achieve the effect of improving needle penetration and good thermal stability

Inactive Publication Date: 2013-12-04
WUHAN ENTAI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are certain defects in this kind of process. The main problem is that the obtained road asphalt has poor thermal stability. After heat storage, the softening point and ductility, especially the film ductility, all decrease, and as the heat storage time prolongs, various indicators are lost. Serious; and there is a large amount of sulfur-containing harmful gas emissions

Method used

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  • Heat stabilizer for road asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0012] 1. Preparation of heat stabilizer

example 1

[0014] Add 200ml of ethanol and 18.4g (0.1mol) of trichloro-s-triazine into a three-necked bottle equipped with a mechanical stirrer. After the trichloro-s-triazine is dissolved, add 3.6g (0.04mol) of sodium hydroxide solution to adjust the pH of the reaction solution between 5-9, add 27.1 g (0.11mol) sodium polysulfide (commercially available, produced by Kunshan Shannan Chemical Materials Co., Ltd.), stir for 1.8h, concentrate and recover ethanol, collect Solid, washed with water, dried to obtain heat stabilizer (sample A).

example 2

[0016] Add 200ml of methanol and 18.4g (0.1mol) of trichloro-s-triazine into a three-necked bottle equipped with a mechanical stirrer. After the trichloro-s-triazine is dissolved, add 2.4g (0.06mol) of Potassium hydroxide to adjust the pH of the reaction solution between 5-9, and then add 32.0 g (0.09mol) potassium polysulfide (commercially available) after 1 hour, stir for 2.5 hours, concentrate and recover methanol, collect the solid, wash with water, and dry , that is, heat stabilizer (sample B).

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Abstract

The invention relates to a heat stabilizer for road asphalt, which is obtained from the reaction of trichlorine symtriazine, aliphatic diamine and polysulfide salt. During the production process of the road asphalt, the heat stabilizer provided by the invention is added, so that the needle penetration, the softening point, the membrane rear-extending degree and the heat storing stability of the asphalt are obviously improved. Besides, the discharging of harmful gas caused by the traditional technology is avoided.

Description

technical field [0001] The invention relates to a heat stabilizer for road asphalt. It belongs to the field of building materials. Background technique [0002] Asphalt is one of the common pavement materials for road paving. The actual road asphalt is usually hot-mixed with rubber materials such as thermoplastic elastomer SBS or SBR and base asphalt in the petroleum industry and added with an appropriate amount of sulfur vulcanization to improve the mechanical properties of asphalt materials. and performance. However, there are certain defects in this kind of process. The main problem is that the obtained road asphalt has poor thermal stability. After heat storage, the softening point and ductility, especially the film ductility, all decrease, and as the heat storage time prolongs, various indicators are lost. Serious; and there is a large amount of sulfur-containing harmful gas emissions. Contents of the invention [0003] The problem to be solved by the present inven...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08K13/02C08K5/3492C08K5/17C08K3/30
Inventor 邱国福苗伟
Owner WUHAN ENTAI TECH