SBS modified emulsified asphalt based on high solid content SBS emulsion

A technology of emulsified asphalt and high solid content, which is applied to building components, building insulation materials, buildings, etc. It can solve the problems of not meeting the requirements of high-quality road maintenance, low solid content of evaporation residue, and low SBS content, and achieve recycling The solvent speed is fast, the surface activity is good, and the effect of increasing the solid content

Active Publication Date: 2019-05-21
WUHAN MUNICIPAL CONSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditionally, the asphalt is directly modified by SBS, and then emulsified to prepare modified emulsified asphalt. The amount of SBS is not high, and the prepared modified emulsified asphalt has low solid content of evaporation residue and low softening point, poor stability, and easy layering, etc. Disadvantages, cannot meet the requirements of high-quality road maintenance

Method used

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  • SBS modified emulsified asphalt based on high solid content SBS emulsion

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of SBS modified emulsified asphalt based on high solid content SBS emulsion, its preparation method comprises the steps:

[0038] 1) Preparation of high solid content SBS emulsion: preparation of SBS solution: 50g SBS is dissolved in 160g cyclohexane solution, stirs and is configured into the SBS solution that mass concentration is 20%; Get 100g water, add 6g AC- wherein 181, 2g OP-10, 2g C 12 h 25 SO 4 Na, stirred evenly to form a compound emulsifier solution; the resulting emulsifier solution was sheared at a low speed (about 2000rpm) for 3min under a shear, and then slowly added to the prepared SBS solution, adding 0.1g flocculant styrene, Increase the rotation speed to about 8000rpm, and emulsify for 30 minutes; purify the emulsified SBS emulsion by vacuum distillation (pressure 84mmHg, temperature 45°C, time 8-12 hours), to obtain a high solid content SBS emulsion;

[0039] 2) The resulting high solid content SBS emulsion is emulsified in a colloid mill w...

Embodiment 2

[0042] A kind of SBS modified emulsified bitumen based on high solid content SBS emulsion, its preparation method comprises the steps: with embodiment 1 gained high solid content SBS emulsion and water, victory 90# matrix asphalt, AC-181 by 6:42:55 The mass ratio of :2 is emulsified in a colloid mill (the control speed is 15000r / min, and the time is 3min) to obtain SBS modified emulsified asphalt.

Embodiment 3

[0044] A kind of SBS modified emulsified asphalt based on high solid content SBS emulsion, its preparation method comprises the steps: the high solid content SBS emulsion of embodiment 1 gained and water, victory 90# matrix asphalt, AC-181 according to 7:41:55 The mass ratio of :2 is emulsified in a colloid mill (the control speed is 15000r / min, and the time is 3min) to obtain SBS modified emulsified asphalt.

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Abstract

The invention discloses SBS modified emulsified asphalt based on high solid content SBS emulsion. The SBS modified emulsified asphalt based on the high solid content SBS emulsion is prepared from thefollowing components in parts by weight: 55 to 60 parts of matrix asphalt, 5 to 7 parts of high solid content SBS emulsion, 40 to 45 parts of water and 2 to 3 parts of an emulsifying agent. Accordingto the SBS modified emulsified asphalt based on the high solid content SBS emulsion, cyclohexane which is environmentally friendly and can enhance the stability of a system is selected as a solvent for dissolving SBS; a compound emulsifier with high surfactivity is preferred, so that the obtained SBS emulsion is high in stability and high in solid content; the modified emulsified asphalt is prepared by utilizing the SBS emulsion, and the characteristics of high solid content of evaporation residue, high softening point and the like can be shown; the obtained modified emulsified asphalt is applied to preventive maintenance of a road, and the advantages of high toughness and elasticity, low noise, strong rutting resistance and the like can be shown; therefore, the SBS modified emulsified asphalt based on the high solid content SBS emulsion is suitable to be popularized and applied.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an SBS modified emulsified asphalt based on a high-solid-content SBS emulsion. Background technique [0002] Polymer modified asphalt emulsion has both advantages of modified asphalt and emulsified asphalt, and is widely used in road construction projects. According to the preparation method, it can be divided into emulsified modified asphalt which is first modified and then emulsified; modified emulsified asphalt which is first emulsified and then modified. Generally speaking, there are four main types of polymers that can be used as asphalt modifiers: thermoplastic resins represented by polyethylene, among which thermoplastic resins represented by polyethylene do not improve the low-temperature performance of asphalt; The rubber represented by latex has poor aging resistance, and the ductility of the modified asphalt has a large decrease after the film o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08J3/03
Inventor 李强黄小霞高萍唐光涛黄绍龙罗宵苗强卢吉徐波向劲松代超储昭胜殷秀红方飞张燕波
Owner WUHAN MUNICIPAL CONSTR GROUP
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