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Graphene composite rubber asphalt modifier as well as preparation method and application thereof

A graphene composite, rubber asphalt technology, applied in the field of asphalt modifier, can solve problems such as unfavorable popularization and use, increase the cost of graphene modified asphalt, etc. Avoid insufficiently dispersed effects

Active Publication Date: 2018-10-23
GUANGXI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This greatly increases the cost of graphene-modified asphalt, which is not conducive to popularization and use

Method used

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  • Graphene composite rubber asphalt modifier as well as preparation method and application thereof
  • Graphene composite rubber asphalt modifier as well as preparation method and application thereof
  • Graphene composite rubber asphalt modifier as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Component and preparation method of embodiment 1 graphene composite rubber asphalt modifier

[0029] Graphene composite rubber asphalt modifier component is as follows (by weight)

[0030]

[0031] The specific surface area of ​​the above three-dimensional structure graphene is 500m 2 / g, the powder particle size of the rubber powder is 60 mesh.

[0032] The preparation method of above-mentioned graphene composite rubber asphalt modifier is as follows:

[0033] (1) Mix three-dimensional structure graphene and naphthenic rubber oil in a mass ratio of 0.003:13, mechanically stir, and disperse for 35 minutes with a high-speed shearing machine at 90° C., and obtain a graphene dispersion after cooling;

[0034] (2) Add the above prepared graphene dispersion, rubber powder and acrylonitrile-butadiene-styrene copolymer into the internal mixer at a mass ratio of 13:85:2.5, and carry out high-temperature internal mixing at 230°C for 35 minutes , after cooling, a graphene c...

Embodiment 2

[0035] Component and preparation method of embodiment 2 graphene composite rubber asphalt modifier

[0036] Graphene composite rubber asphalt modifier component is as follows (by weight)

[0037]

[0038] The specific surface area of ​​the above-mentioned reduced graphene oxide is 400m 2 / g, the powder particle size of the rubber powder is 40 mesh.

[0039] The preparation method of above-mentioned graphene composite rubber asphalt modifier is as follows:

[0040] (1) Mix the reduced graphene oxide and aromatic rubber oil at a mass ratio of 0.0001:5, stir mechanically, and disperse for 20 minutes with a high-speed shearing machine at 60°C, and obtain a graphene dispersion after cooling;

[0041] (2) Add the above prepared graphene dispersion, rubber powder and polyethylene into the internal mixer at a mass ratio of 5:80:0.1, carry out high-temperature internal mixing and kneading at 220°C for 20 minutes, and after cooling, make a graphene composite Rubber asphalt modifie...

Embodiment 3

[0042] Component and preparation method of embodiment 3 graphene composite rubber asphalt modifier

[0043] Graphene composite rubber asphalt modifier component is as follows (by weight)

[0044]

[0045] The specific surface area of ​​the above-mentioned graphene microsheets is 600m 2 / g, the powder particle size of the rubber powder is 80 mesh.

[0046] The preparation method of above-mentioned graphene composite rubber asphalt modifier is as follows:

[0047] (1) Mix graphene microflakes and paraffin rubber oil at a mass ratio of 0.005:20, stir mechanically, and disperse using a high-speed shearing machine at 120°C for 50 minutes, and obtain a graphene dispersion after cooling.

[0048] (2) Add the above prepared graphene dispersion, rubber powder and ethylene bis stearic acid amide in the internal mixer at a mass ratio of 20:90:5, carry out high-temperature internal mixing at 240° C. and knead for 50 minutes. After cooling, Made graphene composite rubber asphalt modi...

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Abstract

The invention discloses a graphene composite rubber asphalt modifier as well as a preparation method and application thereof. The graphene composite rubber asphalt modifier is prepared from the following components in parts by weight: 0.00005 to 0.01 part of graphene powder, 3 to 23 parts of dispersion medium, 78 to 92 parts of rubber powder and 0.05 to 6 parts of additive. The preparation methodof the graphene composite rubber asphalt modifier comprises the following steps: (1) mixing the graphene powder with the dispersion medium, mechanically stirring the graphene powder and the dispersionmedium so as to obtain a graphene dispersion solution through high-speed dispersion; (2) carrying out banburying on the graphene dispersion solution, the rubber powder and the additive to prepare thegraphene composite rubber asphalt modifier. The graphene composite rubber asphalt modifier or the preparation method can be applied to the asphalt modifier, so that the compatibility and the stability of the rubber powder in the asphalt can be greatly improved, the binding performance of the graphene composite rubber modified asphalt and sand stones and high-low temperature stabilizing performance can be improved, and meanwhile, the temperature of a road surface is reduced and the service life of the road surface is prolonged.

Description

technical field [0001] The invention relates to the field of asphalt modifiers, in particular to a graphene composite rubber asphalt modifier and its preparation method and application. Background technique [0002] Asphalt pavement has the characteristics of comfortable driving, quietness, and convenient maintenance. At present, more than 95% of the roads in the world are paved with asphalt pavement. The important material composition of asphalt pavement ranges from the initial residual oil, experienced ordinary asphalt, and heavy traffic asphalt to the current usage. More than 50% of the modified asphalt, with the rapid economic development and the rapid increase of the traffic load, various problems have appeared in the asphalt pavement built with ordinary asphalt or heavy traffic asphalt, such as cracks, rutting, and deformation due to insufficient high-temperature performance. Insufficient low-temperature performance leads to many problems such as cracking of the road s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L91/00C08L21/00C08L55/02C08L23/06C08K3/04C08K7/00
CPCC08L95/00C08L2201/08C08L2205/03C08L2205/035C08L91/00C08L21/00C08L55/02C08L23/06C08K3/042C08K7/00
Inventor 田植群沈培康翁晓娜归立发梁立喆李卫庆尹诗斌
Owner GUANGXI UNIV
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