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Modified asphalt viscosity reducer and preparation method thereof

A technology of modified asphalt and viscosity reducer, which is applied in building components, building insulation materials, buildings, etc. It can solve the problems of aging of modified asphalt and achieve the effects of reducing high-temperature viscosity, increasing softening point and strength, and good stability

Inactive Publication Date: 2015-11-18
天津天合建岭路桥工程科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the existing means, only higher processing temperature can be used to achieve this goal. Currently, the processing temperature of modified asphalt is basically around 160°C to 170°C. At this temperature, a lot of energy is consumed and a large amount of carbon dioxide, smoke and dust are produced Toxic gas, and the modified asphalt has already experienced serious aging phenomenon

Method used

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  • Modified asphalt viscosity reducer and preparation method thereof
  • Modified asphalt viscosity reducer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] 1000g of stearic acid amide, 1500g of zeolite powder, 300g of polypropylene oxide and 4000g of Tween 80 were respectively added to the reaction vessel, mixed at 60°C, and mechanically stirred for 30 minutes to prepare an asphalt viscosity reducer.

Embodiment 2

[0014] Add 3000g of stearic acid amide, 500g of zeolite powder, 2000g of phenolic resin, and 1800g of Span 80 into the reaction vessel respectively, mix at 100°C, and mechanically stir for 20 minutes to prepare an asphalt viscosity reducer.

Embodiment 3

[0016] Add 2000g of stearic acid amide, 1000g of zeolite powder, 1150g of polyvinyl alcohol, and 2900g of fatty alcohol polyoxyethylene ether into the reaction vessel respectively, mix at 80°C, and mechanically stir for 25 minutes to prepare an asphalt viscosity reducer.

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Abstract

The invention provides a modified asphalt viscosity reducer and a preparation method thereof. The modified asphalt viscosity reducer is prepared by: subjecting, by weight part, 10-30 parts of aliphatic amide, 5-15 parts of zeolite powder, 3-20 parts of a high polymer additive, and 18-40 parts of a low molecular weight additive to mechanical stirring at 60-100DEG C for 20-30min. Specifically, the aliphatic amide is octadecanamide with a melting point of 96-101DEG C, the high polymer additive is polypropylene oxide, phenolic resin or polyvinyl alcohol, and the low molecular weight additive is Tween 80, Span 80 or fatty alcohol-polyoxyethylene ether. The viscosity reducer can reduce the high temperature viscosity of asphalt, improve the asphalt softening point, prevent modified asphalt aging, and can save the energy for heating mixing of asphalt and reduce harmful gas emission.

Description

technical field [0001] The invention relates to road, bridge and tunnel pavement materials, in particular to a modified asphalt viscosity reducer and a preparation method thereof. Background technique [0002] Modified asphalt is made by adding modifiers such as rubber, resin, high molecular polymer, ground rubber powder or other fillers or taking measures such as mild oxidation of asphalt to improve the performance of asphalt or asphalt mixture. The asphalt binder is used in road pavement engineering, waterproof engineering and other fields. In order to ensure uniform mixing of modified asphalt and convenient processing, it is necessary to ensure the fluidity of the asphalt, that is, the viscosity of the system is reduced below a certain level. Under the existing means, only higher processing temperature can be used to achieve this goal. Currently, the processing temperature of modified asphalt is basically around 160°C to 170°C. At this temperature, a lot of energy is con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L71/02C08L61/06C08L29/04C08K3/34C08K5/20
Inventor 郑建岭苏怡然
Owner 天津天合建岭路桥工程科技有限公司
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