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High-viscosity asphalt stabilizer, additive and preparation method thereof

A technology of asphalt additives and stabilizers, which is applied in the field of high-viscosity asphalt additives and its preparation, can solve problems such as inconvenient use, and achieve the effects of prolonging service life, convenient construction, good stability and dispersibility

Active Publication Date: 2021-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The stabilizer of the present invention and its additives are mainly used to improve the viscosity of asphalt, and overcome the problem of inconvenient use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] (1) 2.5 parts by weight of sulfur, 2.5 parts by weight of diaryl disulfide, 0.05 parts by weight of sodium dodecyl sulfonate, and 1 part by weight of gelatin are added to 50 parts by weight of an aqueous solution, and sheared for 1 hour at a speed of 3000 rpm. Prepare a stabilizer suspension.

[0053] (2) Dissolve 4 parts by weight of ethyl cellulose in 96 parts by weight of n-butanol, add 6 parts by weight of a stabilizer suspension, shear and emulsify at 3000 rpm for 1 hour, add 500 parts by weight of n-butanol to the aforementioned solution to saturate After shear emulsification at 3000 rpm for 1 h, slowly add 1000 parts by weight of water at 15 °C and 500 rpm, stir for 0.5 h, filter, wash with ethanol, and dry at 50 °C for 5 h to obtain a coating stabilizer.

[0054] (3) 100 parts by weight of SBS (molecular weight: 100,000), 40 parts by weight of C5 petroleum resin (softening point: 95°C), 20 parts by weight of aromatic oil (content of aromatic hydrocarbon: 40wt%),...

Embodiment 2

[0056] (1) Add 4 parts by weight of sulfur, 2 parts by weight of dimethyl disulfide, 0.8 parts by weight of sodium dodecyl sulfonate, and 2 parts by weight of gelatin into 50 parts by weight of an aqueous solution, and cut for 1.5 hours at 4000 rpm , to prepare a stabilizer suspension.

[0057] (2) Dissolve 5 parts by weight of ethyl cellulose in 96 parts by weight of 2-butanol, add 7 parts by weight of a stabilizer suspension, and after shear emulsification at 4000 rpm for 1 hour, add 500 parts by weight of the aforementioned solution to 2-butanol After shear emulsification at 3000 rpm for 1 h in an alcohol-saturated aqueous solution, slowly add 1000 parts by weight of water at 15 °C and 300 rpm, stir for 3 h, filter, wash with ethanol, and dry at 80 °C for 3 h to obtain a coating stabilizer.

[0058] (3) 100 parts by weight of SBS (molecular weight: 150,000), 30 parts by weight of C5 petroleum resin (softening point: 100°C), 30 parts by weight of aromatic oil (aromatic conte...

Embodiment 3

[0060] (1) Add 6 parts by weight of sulfur, 2 parts by weight of methyl ethylene disulfide, 1 part by weight of sodium dodecyl sulfonate, and 3 parts by weight of gelatin into 50 parts by weight of an aqueous solution, and cut for 1 hour at a speed of 4000 rpm to prepare a stable agent suspension.

[0061] (2) Dissolve 6 parts by weight of ethyl cellulose in 96 parts by weight of n-butanol, add 9 parts by weight of a stabilizer suspension, and shear emulsify at 4000 rpm for 1 hour, add 550 parts by weight of n-butanol to the aforementioned solution to saturate After shear emulsification at 3000 rpm for 1 hour, slowly add 1000 parts by weight of water at 20°C and 400 rpm, stir for 2 hours, filter, wash with ethanol, and dry at 80°C for 3 hours to obtain a coating stabilizer.

[0062] (3) 100 parts by weight of SBS (molecular weight: 200,000), 20 parts by weight of C5 petroleum resin (softening point: 110°C), 40 parts by weight of aromatic oil (content of aromatic hydrocarbon: 8...

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Abstract

The invention discloses a high-viscosity asphalt stabilizer, an additive and a preparation method of the high-viscosity asphalt stabilizer. The stabilizing agent is a coating stabilizing agent and consists of a stabilizing agent and a coating coated outside the stabilizing agent, and the weight ratio of the coating to the stabilizing agent is (1-10): 1. The coating stabilizer is granular, the particle diameter is 80-150 microns, and the thickness of the wall material of the coating particle is 2-6 microns. The additive comprises the following raw material components in parts by weight: 100 parts of SBS, 20-40 parts of petroleum resin, 10-40 parts of aromatic hydrocarbon oil and 5-8 parts of the coating stabilizer. The high-viscosity modified asphalt additive can significantly improve the viscosity of asphalt, is convenient to use, can increase the adhesion of asphalt and aggregate, effectively improves the structural stability of an asphalt pavement, and the high-viscosity modified asphalt additive and asphalt have very good compatibility and uniform dispersibility with asphalt.

Description

technical field [0001] The invention relates to the field of petroleum asphalt, in particular to an asphalt stabilizer, a high-viscosity asphalt additive containing the stabilizer and a preparation method thereof. Background technique [0002] High-viscosity asphalt generally refers to asphalt with a dynamic viscosity greater than 20,000 Pa·s at 60°C, which is suitable for the application of open-graded anti-skid wear layer (OGFC) and other road surfaces. OGFC pavement has good drainage, noise reduction and anti-skid performance due to its large void ratio. However, the structural characteristics of large voids also lead to an increase in the contact area between asphalt and air and ultraviolet light, which accelerates the aging of asphalt and shortens the service life of the pavement. [0003] At present, high-viscosity asphalt is mainly prepared by adding polymers to asphalt, which can significantly improve the high and low temperature performance of asphalt and increase ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/10C08K3/06C08K5/375C08K5/372C08L53/02C08L57/02C08L91/00C08L95/00
CPCC08K9/10C08K3/06C08K5/375C08K5/372C08L53/02C08L57/02C08L91/00C08L95/00
Inventor 宋乐春陈保莲范思远陈杰李臣泽李志军宁爱民程国香
Owner CHINA PETROLEUM & CHEM CORP