SBS polymer modified emulsified asphalt and preparation method

A technology of emulsified asphalt and modified asphalt, which is applied in the direction of building structure, building components, building insulation materials, etc., can solve the problems of SBS polymers that are difficult to blend with emulsifiers, unstable materials and product properties, and difficult emulsification. Achieve the effects of reducing road maintenance costs, good high temperature and anti-rutting, and simple equipment

Active Publication Date: 2013-01-09
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When preparing SBS polymer-modified emulsified asphalt in the prior art, it is very difficult to emulsify when the SBS polymer modifier accounts for more than 3% of the mass of SBS polymer-modified asphalt, and the SBS polymer is not easy to blend with the emulsifier. The high viscosity of the medium system affects the feeding and unstable product properties.

Method used

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  • SBS polymer modified emulsified asphalt and preparation method

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Embodiment 1

[0017] In this example, the SBS polymer modified emulsified asphalt is prepared from the following mass percentage of raw materials: SBS polymer modified asphalt with a mass content of 3.5% SBS polymer modifier 60%, and cationic asphalt emulsifier is octadecane Trimethylammonium chloride 3% and octadecyl dimethyl hydroxyethyl ammonium chloride 1% are compounded. The compound emulsion stabilizer is a mixture of ammonium chloride 0.5% and sodium carboxymethyl cellulose 0.25% , Hydrochloric acid 0.31% and water 34.94%.

[0018] The specific preparation method is:

[0019] (1) Mix the SBS polymer modifier with the base asphalt at a temperature of 160°C, add it to the colloid mill, grind and stir for 2 hours to obtain the SBS polymer modified asphalt;

[0020] (2) Add cationic asphalt emulsifier into water at 40°C to dissolve it, add acid to adjust the pH of the emulsion to 4, and then add complex emulsion stabilizer to obtain soap;

[0021] (3) Set the temperature of the colloid mill at ...

Embodiment 2

[0023] In this embodiment, the SBS polymer modified emulsified asphalt is prepared from the following mass percentages of raw materials: SBS polymer modifier with a mass content of 5.5% SBS polymer modified asphalt with 60%, and cationic asphalt emulsifier with octadecane Compounded with 2% trimethyl ammonium chloride and 2% octadecyl dimethyl hydroxyethyl ammonium chloride, the compound emulsion stabilizer is a mixture of 0.25% calcium chloride and 0.03% polyacrylamide, 0.31 hydrochloric acid % And 35.41% of water.

[0024] The specific preparation method is:

[0025] (1) Mix the SBS polymer modifier with the base asphalt at a temperature of 168°C, add it to the colloid mill, grind and stir for 2 hours to obtain the SBS polymer modified asphalt;

[0026] (2) Add cationic asphalt emulsifier into water at 45°C to dissolve it, add acid to adjust the pH of the emulsion to 3, and then add complex emulsion stabilizer to obtain soap;

[0027] (3) Set the temperature of the colloid mill at ...

Embodiment 3

[0029] In this embodiment, the SBS polymer modified emulsified asphalt is prepared with the following mass percentage of raw materials: SBS polymer modified asphalt 45% with 4.0% SBS polymer modifier mass content, and hexadecane as the cationic asphalt emulsifier 3.5% trimethylammonium bromide and 1% alkyl diquaternary ammonium salt are compounded. The composite emulsion stabilizer is a mixture of 0.2% ammonium chloride and 0.25% gelatin, 0.35% hydrochloric acid and 49.7% water.

[0030] The specific preparation method is:

[0031] (1) Mix the SBS polymer modifier with the base asphalt at a temperature of 165°C, add it to the colloid mill, grind and stir for 2 hours to obtain the SBS polymer modified asphalt;

[0032] (2) Add cationic asphalt emulsifier into water at 35°C to dissolve it, add acid to adjust the pH of the emulsion to 5, and then add complex emulsion stabilizer to obtain soap;

[0033] (3) Set the temperature of the colloid mill at 45°C and the pressure at 0.2MPa. After ...

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Abstract

The invention belongs to the modified emulsified asphalt field, and more specifically relates to a SBS polymer modified emulsified asphalt and a preparation method, the SBS polymer modified emulsified asphalt is prepared by the following raw materials by mass percentages: 40-65% of SBS polymer modified emulsified asphalt, 25-50% of water, 2-10% of cation asphalt emulsifier, 0.1-2.0% of composite emulsified stabilizing agent and 0.2-2.0% of acid, wherein SBS polymer modified asphalt is prepared by mixing and reacting a SBS polymer modifier and matrix asphalt, and the mass of the SBS polymer modifier accounts for 3.5%-5.5% of that of the SBS polymer modified asphalt. The prepared SBS polymer modified emulsified asphalt has stable property, and can be used as a cement asphalt mortar layer and the like for a road tack coat, a seal layer, surface treatment, a slurry seal layer and a high speed railway plate-type ballastless track.

Description

Technical field [0001] The invention belongs to the technical field of modified emulsified asphalt, and specifically relates to an SBS polymer modified emulsified asphalt and a preparation method thereof. Background technique [0002] The prior art methods for preparing modified emulsified asphalt mainly include SBR latex modification, SBS latex modification, and SBS solid modification. SBR latex modification is divided into external blending method and internal blending method. The external blending method is to prepare ordinary emulsified asphalt first, and then blend the SBR polymer emulsion into the emulsified asphalt for modification; the internal blending method is in the process of preparing emulsified asphalt , Add the SBR polymer emulsion to the emulsifier soap and then emulsify the asphalt. SBS latex modification is to first dissolve solid SBS in organic solvents such as benzene to make an emulsion, and then use external or internal blending methods to modify emulsifie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08J3/03
Inventor 马鹏程高淑美许金山刘爱华贾丽凤
Owner CHINA PETROLEUM & CHEM CORP
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