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Modified regenerant and preparation method and application thereof

A technology of regeneration agent and modifier, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of restricting the development of heat regeneration technology and high price, and achieve the improvement of road performance, high temperature performance and dispersion ability Effect

Active Publication Date: 2016-10-12
无锡市城市道桥科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the development of thermal regeneration technology in expressway maintenance is restricted
Moreover, since the current regenerants are the products of petroleum refining many times, they are expensive

Method used

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  • Modified regenerant and preparation method and application thereof
  • Modified regenerant and preparation method and application thereof
  • Modified regenerant and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Raw materials: 75 parts of plant asphalt, 20 parts of SBR latex, 4.2 parts of fatty alcohol and ethylene oxide condensate, 0.8 part of 2,6-tertiary butyl-4-methylphenol. The raw materials used in the present invention can be purchased from the market.

[0017] Method: Add plant asphalt into the stirring tank, heat to 80°C and stir, stir for 5 minutes, add SBR latex, stir for 60 minutes, stir and mix evenly, when the stirring tank is cooled to 60°C, add fatty alcohol and ethylene oxide condensate Continue to stir with 2,6-tertiary butyl-4-methylphenol for 20 minutes, and cool to normal temperature to obtain a liquid mixture to obtain a modified regeneration agent.

[0018] The modified regenerant prepared in Example 1 was subjected to an indoor regeneration performance test, and the obtained performance test results are shown in Table 1.

[0019] Table 1 Regenerant Performance Results of Regenerant

[0020]

[0021]

[0022] As can be seen from Table 1, the rejuv...

Embodiment 2

[0024] Raw materials: 72 parts of plant asphalt, 30 parts of VAE emulsion, 4.5 parts of fatty acid polyoxyethylene ester, 0.5 part of bis(3,5-tertiary butyl-4-hydroxyphenyl) sulfide.

[0025] Method: Add plant asphalt into the stirring tank, heat to 70°C and stir, stir for 10 minutes, add VAE emulsion, stir for 30 minutes, stir and mix evenly, when the stirring tank is cooled to 50°C, add fatty acid polyoxyethylene ester and bis(3 , 5-tertiary butyl-4-hydroxyphenyl) sulfide continued to stir for 40 minutes, and cooled to room temperature to obtain a liquid mixture that obtained a modified regeneration agent.

[0026] The modified regenerant prepared in Example 2 was subjected to an indoor regeneration performance test, and the obtained performance test results are shown in Table 2.

[0027] Table 2 Regenerant Performance Results of Regenerant

[0028]

[0029] As can be seen from Table 2, the rejuvenating agent provided by the present invention obviously improves the visco...

Embodiment 3

[0031] The basic steps are the same as in Example 1, except that the emulsifier adopts octylphenol polyoxyethylene ether, and the antiaging agent adopts tetrakis [β-(3,5-tertiary butyl-4-hydroxyphenyl) propionic acid] pentaerythritol esters.

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Abstract

The invention discloses a modified regenerant and a preparation method and application thereof. The regenerant is prepared from vegetable pitch, a modifier, an emulgator and an anti-aging agent; the preparation method comprises the steps that the vegetable pitch is heated and stirred, the modifier is added, stirred and cooled, the emulgator and the anti-aging agent are added for continuous stirring, and the modified regenerant is obtained. The modified regenerant and the preparation method and application thereof have the advantages that the modified regenerant can effectively promote pavement performance of a thermal regeneration modified pitch mixture, aged SBS modified pitch is recovered, and the modified regenerant is economical, environmentally friendly and free of pollution; meanwhile, the preparation method is simple, and the production cost is greatly reduced; in addition, the prepared modified regenerant can be used for maintenance engineering of the surface layer of an expressway, and important significance in popularization of a thermal regeneration technology is achieved.

Description

technical field [0001] The invention belongs to the technical field of asphalt regeneration, and in particular relates to a modified regeneration agent and its preparation method and application. Background technique [0002] Asphalt pavement thermal regeneration technology has attracted more and more attention. After aging, asphalt becomes hard, its viscosity increases, and its performance declines. Therefore, when recycling old materials, it is necessary to regenerate the aged asphalt so that the aged asphalt can regain suitable viscosity and performance. At present, there are mainly two methods of recycling aged asphalt at home and abroad: one is when the old material content does not exceed 30%, generally softer new asphalt is used for blending, that is, the high temperature performance level of the new asphalt is higher than that of the designed asphalt The performance level is one level lower; the second is that when the old material content is high, the regenerant te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L9/08C08L71/02C08L71/08
CPCC08L95/00C08L2205/03C08L9/08C08L71/00C08L31/04C08L71/02
Inventor 顾兴宇周洲高磊姜言旭
Owner 无锡市城市道桥科技有限公司
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