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

Asphalt containing modified nano graphene oxide and asphalt mixture

A nano- and fossil-based technology, applied in building thermal insulation materials, building components, buildings, etc., can solve the problems of spontaneous agglomeration, insignificant effect, reducing the modification effect of nano-graphene oxide on asphalt, etc., and achieves improvement in plasticity and aging resistance. , the effect of improving the overall performance

Active Publication Date: 2021-12-10
SHAANXI SCI TECH UNIV
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large specific surface area and high surface energy of nano-graphene oxide, spontaneous agglomeration often occurs and cannot be well dispersed in asphalt, which greatly reduces the modification effect of nano-graphene oxide on asphalt.
Although it is possible to increase the dispersion of nanomaterials in asphalt by heating the asphalt to reduce the viscosity, strong shear stirring or adding a dispersant, the effect is not significant

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
  • Asphalt containing modified nano graphene oxide and asphalt mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment provides a kind of asphalt containing modified nano-graphene oxide, the specific composition is: 100g of No. 70 matrix asphalt, 0.05g of modified nano-graphene oxide;

[0030] The modified nano-graphene oxide is prepared by the following method:

[0031] (1) Mix 0.15g of graphite with 34g of concentrated sulfuric acid and 3g of concentrated phosphoric acid, mechanically stir in an ice bath for 10 minutes, slowly add 0.9g of potassium permanganate, keep the temperature at 0°C, and stir for 2 hours in an ice bath , then stirred and reacted in a 40°C water bath for 60 minutes, then adjusted the temperature of the water bath to 95°C and stirred for 60 minutes;

[0032] (2) Suspend the reaction product obtained in step (1) in water, add 11g of hydrogen peroxide to react, the reaction product is repeatedly washed and centrifuged 5 times with an aqueous solution of pH5.5, and graphite oxide is peeled off during the washing process to form nano-graphene oxide G...

Embodiment 2

[0035] This example provides a pitch containing modified nano-graphene oxide. Compared with Example 1, the only difference is that the amount of modified nano-graphene oxide is 0.03g.

Embodiment 3

[0037] This example provides a pitch containing modified nano-graphene oxide. Compared with Example 1, the only difference is that the amount of modified nano-graphene oxide is 0.06g.

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 relates to asphalt containing modified nano graphene oxide, and the asphalt comprises matrix asphalt and modified nano graphene oxide accounting for 0.03-0.06% of the mass of the matrix asphalt, and the modified nano graphene oxide is prepared by mixing polyvinylpyrrolidone and nano graphene oxide powder according to a mass ratio of 1: (5-6). According to the product provided by the invention, a certain amount of nano graphene oxide prepared by a specific method is added into conventional matrix asphalt, so the comprehensive performance of the asphalt can be comprehensively improved, and the asphalt is more suitable for being used in an extreme environment.

Description

technical field [0001] The invention relates to the technical field of road engineering materials, in particular to asphalt and asphalt mixture containing modified nanometer graphene oxide. Background technique [0002] With the development of the economy and the increase of traffic demand, the traffic volume and axle load in our country are increasing year by year. At the same time, with the change of global climate, extreme meteorological events have occurred frequently in recent years, such as ultra-high temperature weather and rain, snow and frost weather. Most roads in our country use asphalt pavement, but in the face of complex road conditions and natural environment, unmodified asphalt can no longer bear the increasing axle load and harsh weather environment, which seriously affects the service life of asphalt pavement. Therefore, there is an urgent need to develop new asphalt materials to enhance the performance of road asphalt pavement to ensure its longer service ...

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
IPC IPC(8): C08L95/00C08K9/04C08K3/04
CPCC08K9/08C08K3/042C08K2201/011C08L95/00
Inventor 郭瑞
Owner SHAANXI SCI TECH UNIV