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Anionic anti-freezing emulsified asphalt and preparation method thereof

An emulsified asphalt and anionic technology, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of long-term storage stability, poor adhesion of mixtures, and deterioration of asphalt adhesion. Achieve the effects of prolonging the mixing time, strong cohesive force and strong emulsifying ability

Active Publication Date: 2013-04-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can also be seen from the Marshall stability data in its examples that the cohesiveness of the mixture is not good, so the stability is small
[0004] CN101148544A discloses a kind of asphalt emulsion for cold pouring and its preparation method. A small amount of solvent oil is used in this asphalt emulsion. Although the amount of diesel oil or kerosene is lower than that of CN1554708A, it will still make the cohesiveness of asphalt to a certain extent Worse, and will increase costs, pollute the air
However, the emulsified asphalt is difficult to emulsify due to the use of alcohols alone. This method only solves the problem of low-temperature storage, but cannot solve the problem of long-term storage stability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Take 6400g of Liaohe crude oil straight-run asphalt with a penetration of 148 (1 / 10mm), heat it to 115°C for later use; take 1 g of carboxymethyl cellulose, slowly add it to 110g of isopropanol while stirring, and stir well , after it is completely dissolved, take 10 g of the zwitterionic surfactant N-cocoyl-β-alanine sodium, slowly add it to the above-mentioned isopropanol, stir well, and make a paste for later use; take anion Type surfactant fatty (18) alcohol polyoxyethylene (3) ether sodium 160 g, non-ionic surfactant oleyl alcohol polyoxyethylene (20) ether 1 g, dissolve in 3318 g of water together to fully dissolve the surfactant Prepare soap solution for later use, and keep the temperature at 42°C. Then the above-mentioned hot asphalt, paste, and soap liquid are transported to the colloid mill respectively, and after being uniformly dispersed and ground by the colloid mill, it becomes an oil-in-water emulsion, and then the temperature of the emulsion is lowered t...

Embodiment 2

[0034] Take 6000g of Oman crude oil solvent deoiled bitumen from Maoming Petrochemical Company with a penetration of 98 (1 / 10 mm), heat it to 125°C for later use; take 50g of ethanol and 150g of tert-butanol, mix well, and take 5g of carboxyethyl Cellulose is slowly added to the above-mentioned mixed alcohol solution while stirring, fully stirred evenly, after it is completely dissolved, take 1g of the zwitterionic surfactant N-lauryl-β-alanine, and slowly add it to the above-mentioned alcohol, Stir evenly to make a paste for later use; take 75g of anionic surfactant fatty (18) amine polyoxyethylene (4) sodium sulfate, and 30 g of nonionic surfactant octylphenol polyoxyethylene (20) ether, dissolve In 3689g of water, fully dissolve the surfactant to prepare a soap solution, and keep the temperature at 50°C for later use. Then the above-mentioned hot asphalt, paste, and soap liquid are transported to the colloid mill respectively, and after being uniformly dispersed and ground ...

Embodiment 3

[0036] Take 4200g of Kuwait crude oil oxidized asphalt from Qilu Petrochemical Company with a penetration of 56 (1 / 10 mm), and heat it to 155°C for later use; take 3g of hydroxyethyl cellulose, slowly add it to 480g of propanol while stirring, and stir thoroughly Evenly, after it is completely dissolved, take 50g of the zwitterionic surfactant N-tallowyl-β-iminodipropionate disodium, slowly add it to the above alcohol solution, stir evenly, and make a paste for later use; Anionic surfactant sodium lauryl sulfate 430g, nonionic surfactant lauryl polyoxyethylene (20) ether 70g, dissolved in 4767g of water, so that the surfactant is fully dissolved to prepare soap, and keep the temperature at Store at 55°C for later use. Then the above-mentioned hot asphalt, paste, and soap liquid are transported to the colloid mill, and after being uniformly dispersed and ground by the colloid mill, it becomes an oil-in-water emulsion. The outlet flows out to obtain frost-resistant emulsified a...

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PUM

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Abstract

The invention discloses an anionic anti-freezing emulsified asphalt and a preparation method thereof. A formula of the emulsified asphalt comprises asphalt, an anionic surfactant, a zwitterionic surfactant, alcohol, cellulose and water. The preparation method comprises steps of: preparing cellulose, alcohol and the zwitterionic surfactant into a paste at room temperature; preparing the anionic surfactant into a liquid soap; and uniformly dispersing hot asphalt, the paste and liquid soap by a colloid mill to obtain the anti-freezing emulsified asphalt. The emulsified asphalt not only has good freezing resistance, good long-term storage performance and small sieve residual amount, but also avoids irritant odor caused by heated volatile alcohols in the preparation of soap liquid through single usage of alcohol and production process of emulsified asphalt.

Description

technical field [0001] The invention relates to an emulsified asphalt and a preparation method thereof, in particular to an anionic long-term storage-stable frost-resistant emulsified asphalt and a preparation method thereof. The emulsified asphalt of the invention can be used for road maintenance and repair. Background technique [0002] In the process of road maintenance and repair, emulsified asphalt is one of the commonly used materials. Compared with hot asphalt, it has the advantages of energy saving, convenient use, and environmental protection. However, the emulsified asphalt used in the past has the disadvantage of poor frost resistance, and it is easy to break the emulsification due to freezing during winter storage, so that it cannot continue to be used. In addition, the pavement paved with emulsified asphalt is prone to low-temperature shrinkage cracking or freeze-thaw loosening in winter, which is also caused by the poor frost resistance of the emulsified aspha...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08J3/09C08J3/03C04B26/26
Inventor 陈保莲张静范思远陈闯
Owner CHINA PETROLEUM & CHEM CORP
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