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Asphalt regenerant and preparation method thereof

A technology of asphalt rejuvenating agent and plant asphalt, which is used in building components, building insulation materials, buildings, etc., can solve the problems of not taking into account the matching of functional groups and polarities, restoring asphalt performance, and insufficient viscoelasticity. Secondary aging and high temperature anti-aging ability, good compatibility, good regeneration effect

Active Publication Date: 2019-10-15
湖南鑫长胜材料科技有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method only supplements and reconciles the light components lost during the aging process of waste asphalt, without considering the matching of the supplemented components with the changed functional groups and polarities in the aged asphalt, and the addition of aged asphalt The performance attenuation caused by the cracking of the modified modifier components is reflected in the fact that the regenerated asphalt only recovers its plasticity, and the viscoelasticity is obviously insufficient.
Therefore, it is difficult to completely restore the performance of asphalt by adding light oil to waste asphalt. The stability of the regenerated asphalt system is insufficient, which will easily lead to poor water resistance and secondary aging resistance of the road surface. The regenerated material is difficult to meet its performance. and anti-aging performance requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In the present embodiment, the technical scheme of the asphalt regenerant preparation method is:

[0032] Asphalt regeneration agent, by weight, including 50 parts of plant asphalt, 32 parts of linolenic acid, 10 parts of C9 petroleum resin, 8 parts of bisphenol A epoxy resin, 10 parts of liquid nitrile rubber, 4 parts of nano-titanium dioxide with a particle size of 46nm , 6 parts of KH-560 silane coupling agent, 3 parts of dodecyl dihydroxyethyl betaine.

[0033] The preparation method of asphalt regeneration agent is as follows:

[0034] S1. Mix plant asphalt, linolenic acid, and C9 petroleum resin in proportion and heat to 56°C, stir at a slow speed of 40r / min for about 6min to obtain mixture A, set aside;

[0035] S2. Mix bisphenol A epoxy resin, liquid nitrile rubber, nano-titanium dioxide with a particle size of 46nm, KH-560 silane coupling agent, and dodecyl dihydroxyethyl betaine, and then perform high-speed ball milling for 1 hour. Then shear at a shear rate...

Embodiment 2

[0038] In the present embodiment, the technical scheme of the asphalt regenerant preparation method is:

[0039] Asphalt regenerant, in parts by weight, including 40 parts of plant asphalt, 32 parts of linolenic acid, 10 parts of C9 petroleum resin, 6 parts of bisphenol A epoxy resin, 8 parts of liquid nitrile rubber, 4 parts of nano-titanium dioxide with a particle size of 46nm , 6 parts of KH-560 silane coupling agent, 3 parts of dodecyl dihydroxyethyl betaine.

[0040] The preparation method of asphalt regeneration agent is as follows:

[0041] S1. Mix plant asphalt, linolenic acid, and C9 petroleum resin in proportion and heat to 56°C, stir at a slow speed of 40r / min for about 6min to obtain mixture A, set aside;

[0042]S2. Mix bisphenol A epoxy resin, liquid nitrile rubber, nano-titanium dioxide with a particle size of 46nm, KH-560 silane coupling agent, and dodecyl dihydroxyethyl betaine, and then perform high-speed ball milling for 1 hour. Then shear at a shear rate ...

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Abstract

The invention relates to an asphalt regenerant and a preparation method thereof. The asphalt regenerant comprises the following components in parts by weight: 40 to 60 parts of vegetable asphalt, 20 to 40 parts of unsaturated fatty acid, 6 to 12 parts of petroleum resin, 5 to 14 parts of epoxy resin, 6 to 15 parts of liquid rubber, 4 to 6 parts of nano titanium dioxide, 3 to 8 parts of a silane coupling agent and 2 to 5 parts of alkyl betaine. After the asphalt regenerant provided by the invention is mixed with aged asphalt, the high temperature resistance and the ductility of reclaimed asphalt are recovered and improved.

Description

technical field [0001] The invention relates to the technical field of road engineering materials, more specifically, the invention relates to an asphalt regeneration agent and a preparation method thereof. Background technique [0002] Since the 20th century, with the rapid development of the national economy, my country has entered the stage of large-scale construction of high-grade highways. Among them, asphalt pavement is widely used in highway construction due to its excellent road performance and driving comfort. By the end of 2018, more than 90% of the highways built in my country are asphalt pavement. However, in the process of use, due to the comprehensive effects of long-term temperature changes, rain erosion, ultraviolet light, oxygen and other natural factors on the asphalt pavement, as well as vehicle loads, a series of physical and chemical reactions will occur, resulting in changes in the chemical composition and structure of asphalt. , And then lead to many ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L57/02C08L63/00C08K13/06C08K9/06C08K3/22C08K5/19C08K5/09
CPCC08K2003/2241C08K2201/003C08K2201/014C08L9/02C08L57/02C08L95/00C08L2201/08C08L2205/03C08L2205/05C08L63/00C08K13/06C08K9/06C08K3/22C08K5/19C08K5/09
Inventor 刘建威王潇潇李九苏黄志轩沈增晖林咸强孙韵华郑英赵勇张忠令林鸣霍立飞韩向阳孙玉申张毅尹红星
Owner 湖南鑫长胜材料科技有限公司
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