A kind of catalytic reaction type SBS modified asphalt regenerant and preparation method thereof

A modified asphalt, catalytic reaction technology, used in building components, building insulation materials, construction and other directions, can solve the problems of inability to recover SBS, softening point and low temperature ductility recovery, etc., to achieve improved performance, chemical composition and molecular Easy structure and the effect of improving high and low temperature performance

Inactive Publication Date: 2016-01-06
WUHAN UNIV OF TECH
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing regenerants are basically developed for the regeneration of aged asphalt. They mainly restore the chemical composition and colloidal structure of aged asphalt by adding high aromatic components, but cannot restore the molecular structure of SBS. The softening point and recovery of low temperature ductility are extremely limited

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weighed 27 parts by mass of SBS modified asphalt (softening point of 72 °C, ductility of 35 cm at 5 °C) and 66 parts by mass of catalytic cracking oil slurry (mass content of aromatic components: 58%), both at a temperature of 145 °C, After mixing, stir at 145°C±5°C and 150rpm for 15min, then add 3.98 parts by mass of furfural (penetrating agent), 3 parts by mass of SBS molecular structure restorer, and 0.02 parts by mass of 4-dimethylaminopyridine, keeping The temperature is 145°C, and the stirring is continued for 10 minutes at a rotational speed of 150 rpm to obtain a catalytic reaction type SBS modified asphalt regenerant.

[0026] Weigh 93 parts by mass of aged SBS modified asphalt heated to 160°C, add 7 parts of the above-mentioned catalytic reaction type SBS modified asphalt rejuvenator, keep the temperature at 160°C, and stir at 200rpm for 5min to obtain the regenerated SBS modified asphalt asphalt. The performance test of the recycled SBS modified asphalt show...

Embodiment 2

[0032]Weighed 27 parts by mass of SBS modified asphalt (softening point of 72 °C, ductility of 35 cm at 5 °C) and 64 parts by mass of catalytic cracking oil slurry (mass content of aromatic components: 58%), both at a temperature of 145 °C, After mixing, stir at 145°C±5°C and 150rpm for 15min, then add 3.97 parts by mass of furfural, 5 parts by mass of SBS molecular structure restorer and 0.03 parts by mass of catalyst (4-dimethylaminopyridine), keep the temperature at 145°C, continue to stir for 10 minutes at a speed of 150 rpm to obtain a catalytic reaction type SBS modified asphalt regenerant.

[0033] Weigh 93 parts by mass of aged SBS modified asphalt heated to 160°C, add 7 parts of the above-mentioned catalytic reaction type SBS modified asphalt rejuvenator, keep the temperature at 160°C, and stir at 200rpm for 5min to obtain the regenerated SBS modified asphalt asphalt. The performance test of the recycled SBS modified asphalt shows that the softening point is 72°C, th...

Embodiment 3

[0036] Weighed 27 parts by mass of SBS modified asphalt (softening point of 72 °C, ductility of 35 cm at 5 °C) and 66 parts by mass of catalytic cracking oil slurry (mass content of aromatic components: 63%), both at a temperature of 145 °C, After mixing, stir at 145°C±5°C and 150rpm for 15min, then add 3.97 parts by mass of furfural, 3 parts by mass of SBS molecular structure restorer and 0.03 parts by mass of catalyst (4-dimethylaminopyridine), keep the temperature at 145°C, continue to stir for 10 minutes at a speed of 150 rpm to obtain a catalytic reaction type SBS modified asphalt regenerant.

[0037] Weigh 93 parts by mass of aged SBS modified asphalt heated to 160°C, add 7 parts of the above-mentioned catalytic reaction type SBS modified asphalt rejuvenator, keep the temperature at 160°C, and stir at 200rpm for 5min to obtain the regenerated SBS modified asphalt asphalt. The performance test of the recycled SBS modified asphalt shows that the softening point is 71°C, t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
softening pointaaaaaaaaaa
penetrationaaaaaaaaaa
softening pointaaaaaaaaaa
Login to view more

Abstract

The invention relates to a catalytic reaction type SBS modified asphalt regenerant and a preparation method thereof. A catalytic reaction type SBS modified asphalt regeneration agent is characterized in that it is prepared from SBS modified asphalt, catalytic cracking oil slurry, penetrating agent, SBS molecular structure recovery agent and catalyst, and the mass percentage of each raw material is: SBS Modified asphalt 15%~35%, catalytic cracking oil slurry 55%~80%, penetrant 1%~5%, SBS molecular structure recovery agent 3%~8%, catalyst 0.01%~0.05%. The regeneration agent of the present invention can not only restore the chemical composition and colloidal structure of aged asphalt, but also restore the aging and degraded SBS molecular chain structure under the action of the SBS molecular structure restorer and catalyst, thereby significantly improving the regeneration of SBS. The performance of modified asphalt, the regenerant can better improve the performance of aged SBS modified asphalt.

Description

technical field [0001] The invention belongs to the regeneration and utilization of waste asphalt concrete in road engineering, in particular to a catalytic reaction type SBS modified asphalt regeneration agent and a preparation method thereof. Background technique [0002] Asphalt concrete pavement has the advantages of smooth surface, low vibration, low noise, comfortable driving, short construction period, easy maintenance and repair, etc., and is widely used in road construction. Compared with ordinary asphalt, thermoplastic elastomer SBS modified asphalt has better high and low temperature performance. In recent years, high-grade highway construction has mainly used SBS modified asphalt concrete. [0003] Although asphalt concrete has excellent road performance, asphalt pavement will be affected by factors such as heat, oxygen, and ultraviolet light during use, which will cause asphalt to age, and then under the action of ambient temperature and driving load, cracks wil...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08K5/00C08K5/01C08K5/1535C08K5/1515
Inventor 余剑英秦德峰徐松章灿林吴伟飞吴红杨慧
Owner WUHAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap