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Warm mix agent as well as preparation method and application thereof

A technology of warm mix agent and asphalt, which is applied in climate change adaptation, building insulation materials, building components, etc. It can solve the problem of low-temperature cracking of asphalt mixture, affect the high-temperature stability of asphalt mixture or the low-temperature cracking resistance, and the loss of asphalt ductility To improve the elongation of asphalt, improve the penetration of asphalt, and improve the compatibility

Active Publication Date: 2016-05-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the mixing temperature of asphalt can be reduced, the ductility of asphalt will be lost, that is, asphalt mixture is prone to low temperature cracking
[0012] Existing asphalt warm mix agents usually reduce the 60°C viscosity or 10°C ductility of asphalt while reducing the mixing temperature of asphalt mixture, thus affecting the high temperature stability or low temperature cracking resistance of asphalt mixture

Method used

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  • Warm mix agent as well as preparation method and application thereof
  • Warm mix agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Put the FT with carbon number of 40, molecular weight of 562 and weight of 1000g obtained after coal gasification into a synthesis reaction into a closed container, heat to 250°C, introduce 0.89 moles of chlorine at this temperature, and stir for 60 minutes to obtain intermediate body; Weigh 7000g of the four-line extracted oil with an aromatics content of 70%, put it in another airtight container and heat it to 70°C, add 44.1g of anhydrous AlCl 3 , stirred for 45min. Then, under the state of stirring, spray the above-mentioned intermediate in the form of mist into the oil extracted from the fourth line. After spraying all the mixture, keep the temperature at 70°C, stir and react for 90 minutes, and obtain the asphalt warm mix agent of the present invention. The distribution ratio of each group is shown in Table 1.

[0035] Weigh 7000g of the warm mix agent of the present invention, add it to Shazhong Crude Oil No. 50 solvent deoiled asphalt with a weight of 100kg and ...

Embodiment 2

[0037] The FT obtained by gasifying coal with a carbon number of 90, a molecular weight of 1262, and a weight of 3500g is placed in a closed container, heated to 370°C, and 1.16 moles of chlorine are introduced at this temperature, and stirred for 100 minutes to obtain intermediate body; Weigh 1000g of catalytic cracking oil slurry with an aromatic content of 63%, put it in another airtight container and heat it to 90°C, add 4.7g of anhydrous TiCl 4 , stirred for 35min. Then, the above-mentioned intermediate is sprayed into the catalytic cracking oil slurry in the form of mist under stirring. After all the spraying is carried out, the temperature is kept at 90° C., and the stirring reaction is carried out for 160 minutes to obtain the asphalt warm mixing agent of the present invention. The distribution ratio of each group is shown in Table 1.

[0038] Weigh 500g of the warm mix agent of the present invention, add it to Liaohe Crude Oil No. 90 oxidized asphalt with a weight of...

Embodiment 3

[0040] Put the FT obtained by the synthetic reaction of natural gas with a carbon number of 100, a molecular weight of 1302 and a weight of 1000g in an airtight container, heat it to 325°C, introduce 0.31 moles of fluorine at this temperature, stir for 120min, and obtain intermediate Body; Weigh 3500g of phenol refined extract oil with 78% aromatics content, put it in another airtight container and heat it to 110°C, add 12.3g of anhydrous SbCl 3 , stirred for 40min. Then spray the above-mentioned intermediate into the phenol refined extraction oil in the form of mist under stirring. After spraying all the mixture, keep the temperature at 110°C and stir for 135 minutes to obtain the asphalt warm mix agent of the present invention. The distribution ratio of each group is shown in Table 1.

[0041] Weigh 4000g of the warm mix agent of the present invention, add it to Tahe Crude Oil No. 70 blended asphalt with a weight of 100kg and a temperature of 150°C, and stir for 50 minutes ...

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Abstract

The invention discloses a warm mix agent for reducing high-temperature viscosity of asphalt and a preparation method thereof. Raw materials for preparation of the warm mix agent comprise FT, halogen, aromatic hydrocarbon oil and a catalyst. The FT is high-molecular alkane, whose carbon number is 40-130; molecular weight is 562-1822. The amount of halogen is 0.3-0.5 times the mole number of the FT. Halogen and the catalyst are added, so that a chemical reaction is carried out between aromatic hydrocarbon oil and the FT. The warm mix agent has a warm mixing effect for asphalt, and can improve compatibility between asphalt and the warm mix agent as well as adhesiveness between asphalt and stones. The warm mix agent can effectively reduce high-temperature viscosity of asphalt, reduce mixing and moulding temperatures of an asphalt mixture, enhance softening point and viscosity at 60 DEG C and extension of asphalt, and improve high and low temperature performances of asphalt.

Description

technical field [0001] The invention relates to a preparation method of an asphalt warm-mix agent, in particular to a preparation method of an asphalt warm-mix agent which can reduce the high-temperature viscosity of asphalt so as to reduce the mixing and forming temperature of the asphalt mixture. Background technique [0002] Asphalt mixtures used in previous road projects are generally divided into two types according to the mixing construction temperature: cold mix asphalt mixture CMA (ColdMixAsphalt) and hot mix asphalt mixture HMA (HotMixAsphalt). Cold mix asphalt is generally mixed and paved with emulsified asphalt or liquid asphalt and aggregates at room temperature without heating the aggregates and aggregates, which can save a lot of energy. However, the initial strength of cold mix asphalt mixture is low, and it is difficult to meet the requirements of important projects such as highways and heavy-duty traffic roads. Hot mix asphalt is widely used and has good ro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L101/00C04B26/26
CPCY02A30/30
Inventor 陈保莲张静孙剑锋李志军范思远陈闯宁爱民程国香
Owner CHINA PETROLEUM & CHEM CORP
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