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Emulsified asphalt special for spraying rubber asphalt paint and preparation method of emulsified asphalt

A technology for emulsified asphalt and asphalt emulsifier, used in asphalt coatings, coatings, etc., can solve the problems of poor compatibility of polymer emulsions, poor low temperature resistance, and insufficient demulsification time, and achieve performance indicators. Superior, long working time, excellent physical and mechanical properties

Active Publication Date: 2016-09-21
CHINA OFFSHORE BITUMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the emulsified asphalt used for spraying rubber asphalt waterproof coatings has the following disadvantages: unstable storage, easy to delaminate; low temperature resistance is not good, generally below 0 ℃ will break the emulsion, asphalt precipitates and coagulates; The compatibility is not good, and it is necessary to add a dispersant to mix the asphalt emulsion with the rubber emulsion; the demulsification time cannot meet the requirements of the spray rubber asphalt waterproof coating standard, and the coagulant cannot be instantly demulsified

Method used

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  • Emulsified asphalt special for spraying rubber asphalt paint and preparation method of emulsified asphalt
  • Emulsified asphalt special for spraying rubber asphalt paint and preparation method of emulsified asphalt
  • Emulsified asphalt special for spraying rubber asphalt paint and preparation method of emulsified asphalt

Examples

Experimental program
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Effect test

Embodiment 1

[0050] Add 100 parts by weight of 70# petroleum asphalt in the emulsified asphalt equipment, and keep it at 132 ° C; add 63 parts by weight of water, add 2.5 parts by weight of composite anionic asphalt emulsifier, add 1 part by weight of pH agent (sodium hydroxide ), adding 0.1 parts by weight of the stabilizer, the temperature is 55 ° C, and high-speed shear stirring is carried out to obtain an anionic emulsified asphalt with a solid content of 60.5%.

[0051] In the above-mentioned embodiment, the composite anionic asphalt emulsifier is obtained by compounding secondary alkyl sodium sulfonate, sodium lauryl polyoxyethylene ether carboxylate and sodium lauryl sulfate, and the mass percentage of each component is 50%, 5% and 45%.

[0052] In the above examples, the stabilizer is a compound of sodium hydroxymethylcellulose and ethylene glycol, and the mass ratio of the two is 2:1.

[0053] The storage stability test of the emulsified asphalt prepared by the present embodiment...

Embodiment 2

[0065] Add 85 parts by weight of 70# petroleum asphalt in the emulsified asphalt equipment, and keep it at 132 ° C; add 63 parts by weight of water, add 2.5 parts by weight of composite anionic asphalt emulsifier, add 1 part by weight of pH agent (sodium hydroxide ), adding 0.1 parts by weight of the stabilizer, the temperature is 55 ° C, and high-speed shearing and stirring are carried out to obtain an anionic emulsified asphalt with a solid content of 56%.

[0066] In the above-mentioned examples, the composite anionic asphalt emulsifier is compounded from secondary alkyl sodium sulfonate, sodium lauryl polyoxyethylene ether carboxylate and sodium lauryl sulfate, and the mass percentage of each component is 50%, 5% and 45%.

[0067] In the above examples, the stabilizer is a compound of sodium hydroxymethylcellulose and ethylene glycol, and the mass ratio of the two is 2:1.

[0068] The storage stability test of the emulsified asphalt prepared by the present embodiment:

...

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Abstract

The invention discloses emulsified asphalt special for spraying rubber asphalt paint and a preparation method of the emulsified asphalt. The emulsified asphalt is composed of, by mass, 80-120 parts of asphalt, 40-80 parts of water, 2-5 parts of an anionic asphalt emulsifier, 0-3 parts of a pH agent and 0.1-1 part of a stabilizer, wherein the adding amount of the pH agent is not zero, and the anionic asphalt emulsifier is prepared by mixing at least two of a sulfonate surfactant, a carboxylate surfactant and a sulfate surfactant. The emulsified asphalt can be used for preparing the spraying rubber asphalt paint, can be mixed with a rubber emulsion at any proportion, is stable in storage below minus 10 DEG C and can be matched with the rubber emulsion for spraying construction at minus 5 DEG C. The spraying rubber asphalt waterproof paint prepared by using the emulsified asphalt is high in fluidity, long in working time, wide in temperature adaptation range, less prone to segregation and laying and excellent in physical and mechanical performance; during construction spraying, a coating is quick to solidify and better in performance index, and construction needs can be met fully.

Description

technical field [0001] The invention relates to a special emulsified asphalt for spraying rubber asphalt paint and a preparation method thereof, belonging to the field of chemical industry. Background technique [0002] Emulsified asphalt with the characteristics of good storage stability, wide temperature range and good compatibility with polymer emulsions is a very needed raw material in the coating industry, especially for spraying rubber asphalt waterproof coatings. important. However, the emulsified asphalt currently used for spraying rubber asphalt waterproof coatings has the following disadvantages: unstable storage, easy to delaminate; low temperature resistance is not good, generally below 0 ℃ will break the emulsion, asphalt precipitates and coagulates; The compatibility is not good, and it is necessary to add a dispersant to mix the asphalt emulsion with the rubber emulsion; the demulsification time cannot meet the requirements of the standard for spraying rubber...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/05C09D195/00
CPCC08J3/05C08J2395/00C09D195/00C08L21/00
Inventor 邓文广王涵李佰昌张斌郭娜王红祥李文
Owner CHINA OFFSHORE BITUMEN
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