Asphalt modification with coal tar pitch component based on aldehyde crosslinkers

LIU Yuan-yuan; SONG Zhen-zhen; YANG Yan-hong; HUANG Ye; SUN Ming; ZHAO Xiang-long; MA Xiao-xun

Volume 44 Issue 7

Jul. 2016

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Article Navigation > Journal of Fuel Chemistry and Technology > 2016 > 44(7): 792-800

LIU Yuan-yuan, SONG Zhen-zhen, YANG Yan-hong, HUANG Ye, SUN Ming, ZHAO Xiang-long, MA Xiao-xun. Asphalt modification with coal tar pitch component based on aldehyde crosslinkers[J]. Journal of Fuel Chemistry and Technology, 2016, 44(7): 792-800.

Citation:

LIU Yuan-yuan, SONG Zhen-zhen, YANG Yan-hong, HUANG Ye, SUN Ming, ZHAO Xiang-long, MA Xiao-xun. Asphalt modification with coal tar pitch component based on aldehyde crosslinkers[J]. Journal of Fuel Chemistry and Technology, 2016, 44(7): 792-800.

Citation:

LIU Yuan-yuan, SONG Zhen-zhen, YANG Yan-hong, HUANG Ye, SUN Ming, ZHAO Xiang-long, MA Xiao-xun. Asphalt modification with coal tar pitch component based on aldehyde crosslinkers[J]. Journal of Fuel Chemistry and Technology, 2016, 44(7): 792-800.

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Asphalt modification with coal tar pitch component based on aldehyde crosslinkers

1.
School of Chemical Engineering, Northwest University, Chemical EngineeringResearch Center of the Ministry of Education for Advanced Use Technology of Shanbei Energy, Shaanxi Research Center of Engineering Technology for Clean Coal Conversion, Xi'an 710069, China
2.
Shaanxi Yulin Energy Group Ltd., Yulin 719000, China
3.
National Institute of Clean-and-Low-Carbon Energy, Beijing 102211, China

Funds:

The project was supported by National Natural Science Foundation of China 21406178

National High Technology Research and Development Program 2011AA05A2021

Ministry of Science and Technology Cooperation Projects S2013GR0064

Shaanxi Province Natural Science Basic Research Program 2014JQ2070

Shaanxi Provincial Co-ordinator Innovation Projects 01-01-04

Doctoral Program of Higher Specialized Research Fund 20116101110019

Northwestern University Research Fund Project NG14029

More Information

Corresponding author: SUN Ming, Tel:88307657; E-mail:sunming@nwu.edu.cn; MA Xiao-xun Tel: 029-88302633; E-mail: maxym@nwu.edu.cn
Received Date: 2016-02-04
Rev Recd Date: 2016-04-04

Available Online: 2021-01-23

Publish Date: 2016-07-10

Abstract

Abstract

Adopting tetrahydrofuran solubles of coal tar pitch (THFS) for petroleum asphalt modification, effects of different amounts of mixing, blending temperatures and cross-linking agent on the modified asphalt performance were examined. The optimum blending conditions were determined as amount of THFS, formaldehyde and trioxymethylene cross-linking agents being 8%, 0.8% and 0.2%, respectively at 135 ℃. Hexane soluble (HS) leads to the penetration and ductility of modified asphalt increase, but asphaltene (A) and preasphaltene (PA) improve the temperature sensitivity and raise the softening point. The addition of cross-linking agent improves the aging performance of modified asphalt; the methyl (CH₃) and methylene (CH₂) transmission peak intensity of modified asphalt gradually become stronger; the substituted benzene ring transmission peak intensity at 770-730 cm^-1, 710-690 cm^-1 and 770-810 cm^-1 gradually increases, and C-O-C vibration transmission peak intensity of 1 010-1 270 cm^-1 increases. The pyrolysis peak temperature moved to higher temperature, and the increase of char yield is about 2%. The modified particles exhibit a continuous distribution of flow lines, the streamline distribution of modified asphalt with adding trioxymethylene is more concentrated.
- petroleum asphalt,
- coal tar pitch,
- modification,
- pyrolysis,
- cross-linking agent

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References(22)

References

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