High-aging-resistance modified asphalt and preparation method thereof

A modified asphalt, high-resistance technology, applied in building components, building insulation materials, buildings, etc., can solve the chemical composition of modifiers, molecular structure differences, asphalt UV aging inhibition is not prominent, low temperature crack resistance of asphalt Adverse effects and other issues, to achieve the effect of improving road performance and durability, good synergistic effect, extending maintenance cycle and service life

Inactive Publication Date: 2017-02-22
CHANGAN UNIV
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many kinds of anti-aging modifiers with obvious limitations. Generally, modifiers can effectively inhibit the thermal aging of asphalt, but the inhibitory effect on asphalt UV aging is not outstanding, and the chemical components and molecular structures of the modifiers exist. There is a large difference, and the compatibility with asphalt type and aggregate lithology needs to be further studied
At the same time, it may have adverse effects on the low-temperature crack resistance of asphalt

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
  • High-aging-resistance modified asphalt and preparation method thereof
  • High-aging-resistance modified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1: High anti-aging modified asphalt

[0044] A high anti-aging modified asphalt, which is composed of the following raw materials in terms of mass fraction: base asphalt 75.5%, hindered amine light stabilizer 2.7%, trilauric phosphite 0.6%, barium stearate 1.2%, diatom Soil 7%, epoxidized soybean oil 5%, methyl isobutyl ketone 8%, the sum of the mass fractions of raw materials is 100%.

[0045] The above-mentioned base asphalt is 90# base asphalt, which can be replaced by other types of asphalt; the above-mentioned hindered amine light stabilizer is compounded with Tinuvin 770 and Chimassorb 944 at a mass ratio of 6:4. The fineness of the above-mentioned diatomite is 2000 mesh; the epoxy value of the above-mentioned epoxidized soybean oil is 8%.

[0046] The above-mentioned raw materials are prepared according to the following steps into highly anti-aging modified asphalt.

[0047] (1) Weigh base asphalt, hindered amine light stabilizers Tinuvin 770 and Chimas...

Embodiment 2

[0051] Example 2: High anti-aging modified asphalt

[0052] The difference between this example and Example 1 is that the proportion of raw materials is different, and it is composed of the following raw materials in terms of mass fraction: 76.8% of base pitch, 2.5% of hindered amine light stabilizer, 0.8% of trilauric phosphite, stearin 1.4% of barium acid, 6.5% of diatomite, 7% of epoxidized soybean oil, 5% of methyl isobutyl ketone, and the sum of the mass fractions of raw materials is 100%.

Embodiment 3

[0053] Example 3: High anti-aging modified asphalt

[0054] The difference between this example and Example 1 is that the proportion of raw materials is different, and it is composed of the following raw materials in terms of mass fraction: base pitch 75.0%, hindered amine light stabilizer 1.8%, trilauric phosphite 1%, stearin 0.7% of barium acid, 8% of diatomaceous earth, 6.5% of epoxidized soybean oil, 7% of methyl isobutyl ketone, and the sum of the mass fractions of raw materials is 100%.

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 a high-aging-resistance modified asphalt and a preparation method thereof. The high-aging-resistance modified asphalt comprises the following components in percentage by mass: 72-80% of substrate asphalt, 1.3-2.7% of hindered amine light stabilizer, 0.5-1.2% of trilauryl phosphite, 0.5-2% of barium stearate, 6-8% of diatomite, 5-10% of epoxy soybean oil and 5-8% of methyl isobutyl ketone. The preparation method comprises the following steps: adding the hindered amine light stabilizer, trilauryl phosphite and barium stearate into the substrate asphalt at appropriate temperature, uniformly mixing with the asphalt, and adding the diatomite, epoxy soybean oil and methyl isobutyl ketone to obtain the high-aging-resistance modified asphalt. The asphalt has very high heat stability and light stability, is capable of greatly enhancing the pavement performance and durability and prolonging the maintenance period and service life of the high-grade asphalt pavement when being applied to the asphalt pavement, and thus, has very high cost performance and wide application prospects.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of asphalt pavement materials, in particular to a highly anti-aging modified asphalt and a preparation method thereof. [0003] 【Background technique】 [0004] Asphalt pavement has many advantages such as good driving comfort and convenient maintenance and repair. After years of promotion and application, it has gradually developed into the main pavement structure form of high-grade highways in my country. During use, the aging of asphalt has a direct impact on the performance and durability of asphalt pavement, so it has received extensive attention. The aging of asphalt is usually divided into thermal aging caused by high temperature and ultraviolet aging caused by sunlight (mainly ultraviolet rays contained therein). At present, the research on thermal aging is relatively mature, and the research on ultraviolet aging is still developing rapidly. [0005] In order to delay the aging of asphalt, e...

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): C08L95/00C08L91/00C08K13/04C08K7/26C08K5/3492C08K5/524C08K5/098C08K5/07
CPCC08L95/00C08L2201/08C08K2201/014
Inventor 何锐刘斌清陈骞黄鑫仵江涛
Owner CHANGAN UNIV
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