Unlock instant, AI-driven research and patent intelligence for your innovation.

Modified asphalt with stable heat storage prepared by two terminal-group-polarized SBS

A modified asphalt heat storage technology, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of poor heat storage stability, affecting the integrity of SBS, modification discount, etc., to improve heat storage Improved stability, compatibility, and expanded application range

Active Publication Date: 2021-05-04
CHINA PETROLEUM & CHEM CORP
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the ways of modifying asphalt by modifying SBS are very complicated, and will affect the overall integrity of SBS, and the modification will be greatly reduced, resulting in poor properties such as thermal storage stability.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Modified asphalt with stable heat storage prepared by two terminal-group-polarized SBS
  • Modified asphalt with stable heat storage prepared by two terminal-group-polarized SBS
  • Modified asphalt with stable heat storage prepared by two terminal-group-polarized SBS

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Take 70# base asphalt and heat it to 185±5℃ to melt;

[0041](2) Then add furfural extract oil, SBS-OH and SBS-O-epoxy, stir and premix at 200r / min for 1h, and shear at 175±5°C for 25min at high speed, with a shear rate of 2500r / min;

[0042] (3) After adding the stabilizer (BHS-2A), continue high-speed shearing for 10 minutes, and then develop for 4.5 hours at 175±5°C with a stirring rate of 100r / min to obtain modified asphalt (see Table 4 for properties).

[0043] Among them, the mass percentages of each component are: base asphalt 94.5%, SBS-OH 2.8%; SBS-O-epoxy 1.5%, furfural extracted oil 1%, BHS-2A 0.2%; the average of linear terminal hydroxylated SBS The molecular weight is 100,000, without oil extension, and the block ratio S / B=3 / 7; the average molecular weight of the linear terminal epoxylation is 100,000, and the base asphalt is 70# base asphalt.

Embodiment 2

[0045] (1) Take 70# base asphalt and heat it to 185±5℃ to melt;

[0046] (2) Then add furfural extract oil, SBS-OH and SBS-O-epoxy, stir and premix at 200r / min for 1h, and shear at 175±5°C for 25min at high speed, with a shear rate of 2500r / min;

[0047] (3) After adding the stabilizer (BHS-2A), continue high-speed shearing for 10 minutes, and then develop for 4.5 hours at 175±5°C with a stirring rate of 100r / min to obtain modified asphalt (see Table 4 for properties).

[0048] Among them, the mass percentages of each component are: matrix asphalt 93.8%, SBS-OH 2.5%; SBS-O-epoxy 1.5%, furfural extracted oil 2%, BHS-2A 0.2%; the average of linear terminal hydroxylated SBS The molecular weight is 100,000, without oil extension, and the block ratio S / B=3 / 7; the average molecular weight of the linear terminal epoxylation is 100,000, and the base asphalt is 70# base asphalt.

Embodiment 3

[0050] (1) Take 70# base asphalt and heat it to 185±5℃ to melt;

[0051] (2) Then add furfural extract oil, SBS-OH and SBS-O-epoxy, stir and premix at 200r / min for 1h, and shear at 175±5°C for 25min at high speed, with a shear rate of 2500r / min;

[0052] (3) After adding the stabilizer (BHS-2A), continue high-speed shearing for 10 minutes, and then develop for 4.5 hours at 175±5°C with a stirring rate of 100r / min to obtain modified asphalt (see Table 4 for properties).

[0053] Wherein, the mass percentages of each component are respectively: matrix asphalt 96%, SBS-OH 2%; SBS-O-epoxy 1%, furfural extraction oil 0.8%, BHS-2A 0.2%; The average molecular weight of linear terminal hydroxylated SBS is 10, no oil extension, block ratio S / B=3 / 7; the average molecular weight of the linear terminal epoxylation is 10, and the base asphalt is 70# base asphalt.

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

No PUM Login to View More

Abstract

The invention discloses modified asphalt with stable heat storage and a preparation method thereof. The modified asphalt with stable heat storage comprises the following components in percentage by mass: 92-96% of matrix asphalt; 3-8% of an SBS modifier; 0-3% of a compatilizer; and 0-0.4% of a stabilizer; wherein the SBS modifier is prepared from SBS with a linear terminal hydroxylation function and SBS with a linear terminal epoxidation function. The modified asphalt provided by the invention has good thermal storage stability, the difference of segregation softening points of the modified asphalt with stable thermal storage is less than or equal to 2.5 DEG C, the modified asphalt meets the national standard, the modified asphalt has good storage stability, the low-temperature cracking and anti-fatigue capabilities of a pavement are obviously improved, the application range is expanded, and the industrial production of the modified asphalt is facilitated.

Description

technical field [0001] The invention relates to a modified asphalt with stable heat storage, in particular to two kinds of end-group polarized SBS modified asphalt. At the same time, the invention also relates to a preparation method of the modified asphalt. Background technique [0002] Road transportation is one of the most important ways of land transportation, and its contribution to social and economic development is obvious to all. Since the beginning of the new century, my country's roads, especially expressways, have made great progress, but people's growing demand for transportation is still It is unabated, my country's road transport economy still needs to be developed urgently, and higher requirements are put forward for roads. [0003] The common asphalt currently used is due to its shortcomings such as unstable heat storage and brittleness at low temperature, which cannot meet the requirements of high roads. Styrene-butadiene-styrene block copolymer (SBS) has t...

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 Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L91/00C08F8/08C08F8/00C08F297/04
CPCC08L95/00C08F8/08C08F8/00C08L2201/08C08L2205/03C08L2205/025C08L53/025C08L91/00C08F297/04
Inventor 李静静邵磊山
Owner CHINA PETROLEUM & CHEM CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com