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A kind of composite modified asphalt with electrical conductivity and preparation method thereof

A technology of composite modified asphalt and conductive performance, which is applied in the direction of building components, building insulation materials, buildings, etc., can solve the problems of single asphalt road performance, reduce the service life of the road surface, reduce the viscosity of asphalt, and achieve the reduction of temperature sensitivity Sexuality, good economic benefits, and the effect of increasing resin content

Inactive Publication Date: 2017-08-25
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to some shortcomings of asphalt itself, such as reduced viscosity of asphalt at high temperature, high brittleness and poor flexibility at low temperature, etc., the asphalt pavement is seriously damaged, and the service life of the pavement is reduced. During the renovation period, a large amount of economic losses were caused
A large number of studies on asphalt modifiers have been done at home and abroad, but most of them only improve the road performance of asphalt, and there are few studies on modifiers that can improve both road performance and asphalt electrical conductivity. , there is an urgent need to develop a new type of asphalt modifier, which can improve the performance of asphalt and at the same time promote the conductivity of asphalt, so as to promote the further development of conductive asphalt pavement

Method used

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  • A kind of composite modified asphalt with electrical conductivity and preparation method thereof
  • A kind of composite modified asphalt with electrical conductivity and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment provides a kind of composite modified asphalt with electrical conductivity, which consists of the following raw materials in parts by weight:

[0027] 100 parts of base asphalt; 11 parts of conductive polymer; 2 parts of bitumen conductivity improver; 2 parts of coupling agent; 0.5 part of dispersant, of which:

[0028] The base asphalt is road petroleum asphalt, the conductive polymer is poly-p-styrene vinylene, the asphalt conductivity improver is 3,4-dihydroxycinnamic acid, and the coupling agent is trimethoxy-2-azidobenzenesulfonylethylsilane , The dispersant is two (octylphenol polyoxyethylene ether) phosphoester.

[0029] The preparation method of the composite modified asphalt with electrical conductivity of the present embodiment is:

[0030] Step 1, adding the conductive polymer, asphalt conductivity improver, coupling agent and dispersant to the ethanol solution with a mass concentration of 25% to 35%, the quality of the required ethanol solut...

Embodiment 2

[0034] This embodiment provides a kind of composite modified asphalt with electrical conductivity, which consists of the following raw materials in parts by weight:

[0035] 100 parts of base asphalt; 9 parts of conductive polymer; 1.5 parts of asphalt conductivity improver; 1.2 parts of coupling agent; 0.3 parts of dispersant.

[0036] The base asphalt is road petroleum asphalt, the conductive polymer is poly-p-styrene vinylene, the asphalt conductivity improver is 3,4-dihydroxycinnamic acid, and the coupling agent is trimethoxy-2-azidobenzenesulfonylethylsilane , The dispersant is two (octylphenol polyoxyethylene ether) phosphoester.

[0037] The preparation method of the composite modified asphalt with electrical conductivity in this example is the same as that in Example 1.

[0038] The performance test results of the composite modified asphalt with electrical conductivity in this example are shown in Table 1.

Embodiment 3

[0040] This embodiment provides a kind of composite modified asphalt with electrical conductivity, which consists of the following raw materials in parts by weight:

[0041] 100 parts of base asphalt; 8 parts of conductive polymer; 1.1 parts of asphalt conductivity improver; 0.9 parts of coupling agent; 0.18 parts of dispersant.

[0042] The base asphalt is coal tar pitch, the conductive polymer is polyphenylene vinylene, the asphalt conductivity improver is 3,4-dihydroxycinnamic acid, the coupling agent is trimethoxy-2-azidobenzenesulfonylethylsilane, and the dispersed The agent is bis(octylphenol polyoxyethylene ether) phosphoester.

[0043] The preparation method of the composite modified asphalt with electrical conductivity in this example is the same as that in Example 1.

[0044] The performance test results of the composite modified asphalt with electrical conductivity in this example are shown in Table 1.

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Abstract

The invention provides compound modified asphalt with conductivity and a preparation method of the compound modified asphalt. The compound modified asphalt is prepared from raw materials in parts by weight as follows: 100 parts of base asphalt, 0.7-11 parts of conducting polymers, 0.01-2 parts of an asphalt conductivity improver, 0.01-2 parts of a coupling agent and 0.01-0.5 parts of a dispersing agent. Firstly, the conducting polymers, the asphalt conductivity improver, the coupling agent and the dispersing agent are added to an ethanol solution, the mixture is evenly stirred and heated, and a compound modifier is prepared; then the compound modifier is added to the base asphalt at the high temperature. The conducting polymers are added to the compound modified asphalt, the conductivity of the asphalt is improved, meanwhile, 3,4-dihydroxycinnamic acid is added, the conductivity of the conducting polymers is improved under the synergistic effect, the conducting polymers are uniformly dispersed in the asphalt, the part of saturates in the asphalt can be promoted to crack, the content of the saturates is reduced, the temperature sensitivity of the asphalt is reduced, besides, the content of the resin in the asphalt can be increased, the ductility of the asphalt is improved, and the low-temperature performance of the asphalt is improved.

Description

technical field [0001] The invention belongs to the field of road engineering materials and relates to asphalt, in particular to a composite modified asphalt with electrical conductivity and a preparation method thereof. Background technique [0002] Asphalt pavement is widely used in highway pavement because of its advantages such as comfortable driving, low noise, good skid resistance, and high traffic safety. However, due to some shortcomings of asphalt itself, such as reduced viscosity of asphalt at high temperature, high brittleness and poor flexibility at low temperature, etc., the asphalt pavement is seriously damaged, and the service life of the pavement is reduced. During the transformation period, a large amount of economic losses were caused. A large number of studies on asphalt modifiers have been done at home and abroad, but most of them only improve the road performance of asphalt, and there are few studies on modifiers that can improve both road performance a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L65/00C08L71/02C08K5/13C08K5/548
CPCC08L95/00C08L2205/03C08L65/00C08L71/02C08K5/13C08K5/548
Inventor 王朝辉陈谦问鹏辉侯荣国李彦伟李岩军蒋春阳高志伟郭滕滕
Owner CHANGAN UNIV