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Preparation method of asphalt regenerating agent

A kind of asphalt regeneration agent and catalyst technology, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of short service life of recycled asphalt pavement, inability to dissolve and disperse asphaltene, etc., and achieve surface energy reduction, surface Effect of reducing tension and improving fatigue performance

Inactive Publication Date: 2018-08-10
江苏新亿源环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the problem that most current asphalt regenerants use emulsified asphalt. Although they can adjust the viscosity of old asphalt, they cannot dissolve and disperse asphaltene, and the service life of regenerated asphalt pavement is short. Preparation method of asphalt regenerant

Method used

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  • Preparation method of asphalt regenerating agent

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preparation example Construction

[0023] A preparation method of an asphalt regenerant, the preparation method comprising the steps of:

[0024] (1) In parts by weight, take 15-20 parts of isophorone diisocyanate, 7-8 parts of fatty alcohol polyoxyethylene ether, 5-6 parts of N-methyldiethanolamine, 3-4 parts of acetone, 3 ~4 parts of 0.1mol / L acetic acid solution, 0.01~0.03 parts of organotin catalyst, put isophorone diisocyanate and N-methyldiethanolamine into a container for mixing, pass through nitrogen protection, and add organotin while stirring Catalyst, heat up to 80~85°C, stir for 1~2h, wait until the temperature drops to 70~75°C, add fatty alcohol polyoxyethylene ether, acetone, keep warm for 1~2h, wait to cool to room temperature, add acetic acid solution, with 1000~ Disperse and emulsify at a speed of 2000r / min for 10~15min, adjust the solid content to 30%, and obtain a dispersion for later use;

[0025] (2) Dry the red mud naturally for 2~4 hours, crush it to get the crushed product, mix the crus...

Embodiment 1

[0029] The organotin catalyst is dibutyltin dilaurate.

[0030] The base asphalt is 70# new asphalt.

[0031] The modified bentonite is mixed with calcium-based bentonite and water according to the mass ratio of 1:10, soaked for 1 hour, added sodium pyrophosphate with 0.3% of the mass of calcium-based bentonite, and roughly dispersed under a high-speed disperser, and then carried out under ultrasonic waves. Finely disperse and filter to obtain filter residue, wash the filter residue with water and dry to obtain modified bentonite.

[0032] The mixture is uniformly mixed with nonylphenol polyoxyethylene ether and sodium lauryl sulfate at a mass ratio of 5:3 to obtain the mixture.

[0033] The plasticizer refers to dibutyl phthalate.

[0034] A preparation method of an asphalt regenerant, the preparation method comprising the steps of:

[0035] (1) In parts by weight, take 15 parts of isophorone diisocyanate, 7 parts of fatty alcohol polyoxyethylene ether, 5 parts of N-methyl...

Embodiment 2

[0040] The organotin catalyst is stannous octoate.

[0041] The base asphalt is 70# new asphalt.

[0042] The modified bentonite is to mix calcium-based bentonite and water according to the mass ratio of 1:15, soak for 2 hours, add sodium pyrophosphate with 0.4% of the mass of calcium-based bentonite, and carry out coarse dispersion under a high-speed disperser, and then proceed under ultrasonic waves. Finely disperse and filter to obtain filter residue, wash the filter residue with water and dry to obtain modified bentonite.

[0043] The mixture is uniformly mixed with nonylphenol polyoxyethylene ether and sodium lauryl sulfate at a mass ratio of 5:3 to obtain the mixture.

[0044] The plasticizer refers to dibutyl phthalate.

[0045] A preparation method of an asphalt regenerant, the preparation method comprising the steps of:

[0046] (1) In parts by weight, take 20 parts of isophorone diisocyanate, 8 parts of fatty alcohol polyoxyethylene ether, 6 parts of N-methyldieth...

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Abstract

The invention discloses a preparation method of an asphalt regenerating agent and belongs to the fields of asphalt regenerating agents. The preparation method comprises the following steps: mixing modified bentonite and water and uniformly stirring; adjusting the pH (Potential of Hydrogen) value to 9 to 10; adding a mixture which is 30 to 40 percent of the mass of bentonite and stirring at the temprature of 50 to 60 DEG C for 1 to 2h, so as to obtain a stirring solution; pouring the stirring solution into an emulsifying machine and stirring for 25 to 30s; then adding a stirred material which is 3 to 4 times of the mass of the stirring solution and has the temperature of 130 to 140 DEG C and mixing and stirring for 20 to 30min; then adding a plasticizer which is 30 to 40 percent of the massof the stirring solution and stirring for 10 to 15min; cooling to room temperature to obtain the asphalt regenerating agent.

Description

technical field [0001] The invention belongs to the field of asphalt regenerants, in particular to a preparation method of asphalt regenerants. Background technique [0002] Asphalt rejuvenation agent refers to a kind of asphalt rejuvenation agent that needs to be added when the aging asphalt pavement restores its performance. With the development of the national economy, the number of automobiles in my country continues to increase, resulting in a rapid increase in the load of public transportation. Deformation, rutting, wear, cracks and other diseases have appeared successively on the asphalt pavement of expressway. It is imminent to carry out maintenance and reconstruction for the aging and seriously deteriorating road surface. At present, the method of directly digging and laying new asphalt pavement is usually adopted. This method brings a huge amount of asphalt mixture waste, which has a negative impact on the ecological environment. According to relevant data, acco...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L75/08C08K13/06C08K9/04C08K9/02C08K3/34C08K3/22C08K5/12C08K5/42
CPCC08L95/00C08L75/08C08K13/06C08K9/02C08K3/34C08K3/22C08K5/12C08K5/42
Inventor 雷广云徐扣华刘红妹
Owner 江苏新亿源环保科技有限公司
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