Warm mixing agent and preparation method thereof

The technology of warm mix agent and modifier is applied in the field of asphalt modifier to achieve the effects of reducing exhaust gas and asphalt smoke emission, reducing mixing temperature and improving asphalt softening point

Inactive Publication Date: 2015-04-29
CHANGZHOU XINTUO PAVEMENT MODIFICATION MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no warm mixing agent on the market that can simultaneously have the characteristics of low temperature mixing and excellent performance.

Method used

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  • Warm mixing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The warm mixing agent of the present embodiment is prepared according to the following steps:

[0025] 1. Preparation of amide compounds: In a 500mL four-necked flask equipped with a stirrer, thermometer, condenser, and water separator, first replace with nitrogen, then add 120g of oleic acid, 60g of ethylenediamine and 0.54g of phosphoric acid in sequence, Stir evenly, and at the same time pass nitrogen protection, stir at 150°C for 4 hours, and cool to obtain oleic acid amide;

[0026] 2. Add 3g of asphalt anti-stripping agent, 18g of di-(tert-butylperoxyisopropyl)benzene and 60g of EVA to the amide compound prepared in step 1, stir at 150°C for 3h, and cool to normal temperature to obtain warm mix.

Embodiment 2

[0028] 1. Preparation of amide compounds: In a 500mL four-necked flask equipped with a stirrer, thermometer, condenser, and water separator, first replace with nitrogen, and then add 105g of stearic acid, 150g of ethylenediamine and 0.51g of phosphoric acid in sequence , stirred evenly, and at the same time passed nitrogen protection, stirred at 120°C for 6 hours, and cooled to obtain stearic acid amide;

[0029] 2. Add 10 g of asphalt anti-stripping agent, 10 g of dicumyl peroxide and 36 g of EVA to the amide compound obtained in step 1, stir at 100° C. for 1 hour, and cool to room temperature to obtain the warm mixing agent.

Embodiment 3

[0031] 1. Preparation of amide compounds: In a 500mL four-neck flask equipped with a stirrer, thermometer, condenser, and water separator, first replace it with nitrogen, and then add 120g of lauric acid, 120g of ethylenediamine and 0.96g of phosphorous acid in sequence , stirred evenly, and at the same time passed nitrogen protection, stirred at 200°C for 1 hour, and cooled to obtain lauric acid amide;

[0032] 2. Add 26g of asphalt anti-stripping agent, 3g of sulfur and 27g of EVA to the amide compound prepared in step 1, stir at 110°C for 1.5h, and cool to room temperature to prepare the warm mix agent.

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Abstract

The invention relates to a warm mixing agent and a preparation method thereof and relates to a modifier, and particularly relates to a modifier of asphalt. The warm mixing agent provided by the invention aims to provide the warm mixing agent capable of reducing the mixing temperature of an asphalt mixture and improving the anti-rut capacity and low-temperature bending property of the asphalt mixture and the preparation method thereof. The warm mixing agent comprises 60-90 parts of amide compounds, 1-10 parts of an asphalt anti-stripping agent, 1-10 parts of an asphalt extensibility modifier and 5-20 parts of an elastomer modifier. The warm mixing agent provided by the invention is convenient to use. The warm mixing agent is added into asphalt, so that the mixing temperature of the asphalt mixture can be reduced, and moreover, the anti-rut capacity and low-temperature bending property of the asphalt mixture are improved. The warm mixing agent provided by the invention is used in the field of asphalt modification.

Description

technical field [0001] The invention relates to a modifier, in particular to a modifier for asphalt. Background technique [0002] Traditional hot mix asphalt mixture needs to heat the base material and mix it at high temperature, which consumes a lot of energy; and it will generate a lot of smoke during use, causing pollution to the construction environment and endangering the health of construction workers. The traditional hot-mix asphalt mixture has high mixing temperature and high molding temperature, and the asphalt is aging. It cannot be constructed when the temperature is low in winter and at high altitudes. [0003] At present, there are also some warm mix agents on the market, which basically only reduce the asphalt mixing temperature, basically maintain the performance of the asphalt mixture, and some even reduce the rutting resistance or low-temperature bending performance of the asphalt mixture. At present, there is no warm mixing agent on the market that can si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L23/08C08K5/20C08K5/098C04B26/26
CPCY02A30/30
Inventor 李海勇张晓华
Owner CHANGZHOU XINTUO PAVEMENT MODIFICATION MATERIALS CO LTD
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