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SBS modified emulsified bitumen having a high softening point and a preparing method thereof

A technology of emulsified asphalt and high softening point, which is applied in building components, building insulation materials, buildings, etc. It can solve the problems of low softening point, low-temperature performance attenuation, and high softening point of modified emulsified asphalt, and achieve high SBS content and excellent high temperature performance and effect of low temperature performance

Inactive Publication Date: 2017-04-05
CNPC JIANGSU FUEL ASPHALT
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problems of low softening point of existing modified emulsified asphalt and serious low-temperature performance such as severe ductility attenuation at 5°C, and to provide a high softening point SBS modified emulsified asphalt and its preparation method. The SBS modified emulsified asphalt has good emulsification effect, good storage stability, high softening point, and remarkable high and low temperature performance

Method used

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  • SBS modified emulsified bitumen having a high softening point and a preparing method thereof

Examples

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Effect test

Embodiment 1

[0028] A high softening point SBS modified emulsified asphalt, the content of each component is: 530g of No. 70 A grade base asphalt, 50g of catalytic cracking oil slurry, 25g of SBS modifier, 2.0g of stabilizer, 18g of cationic emulsifier, 0.8 g. Water 374.2g.

[0029] The preparation method of high softening point SBS modified emulsified asphalt comprises the steps:

[0030] (1) Heat 530g of base asphalt to 185°C, add 50g of catalytic cracking oil slurry, add 25g of SBS modifier and 2.0g of stabilizer under high-speed shearing conditions, shear for 45min, and then lower the temperature to 180°C, Stir and develop for 3.5 hours to obtain SBS modified asphalt for emulsification;

[0031] (2) Add 18g of cationic emulsifier MQK-1D and 0.8g of additive HEC into 374.2g of water, heat to 60°C, stir evenly, add hydrochloric acid, and adjust the pH value of the soap to 2;

[0032] (3) Add the SBS modified asphalt prepared in (1) into the asphalt tank of the colloid mill, heat and ke...

Embodiment 2

[0034] A high softening point SBS modified emulsified asphalt, the content of each component is: 500g of No. 70 A grade base asphalt, 80g of catalytic cracking oil slurry, 25g of SBS modifier, 2.0g of stabilizer, 18g of cationic emulsifier, 0.8 g. Water 374.2g.

[0035] The preparation method of high softening point SBS modified emulsified asphalt comprises the steps:

[0036] (1) Heat 500g of base asphalt to 185°C, add 80g of catalytic cracking oil slurry, add 25g of SBS modifier and 2.0g of stabilizer under high-speed shearing conditions, shear for 45min, and then lower the temperature to 180°C, Stir and develop for 3.5 hours to obtain SBS modified asphalt for emulsification;

[0037] (2) Add 18g of cationic emulsifier MQK-1D and 0.8g of additive HEC into 374.2g of water, heat to 60°C, stir evenly, add hydrochloric acid, and adjust the pH value of the soap to 2;

[0038] (3) Add the SBS modified asphalt prepared in (1) into the asphalt tank of the colloid mill, heat and keep...

Embodiment 3

[0040] A high softening point SBS modified emulsified asphalt, the content of each component is: 480g of No. 70 A grade base asphalt, 100g of catalytic cracking oil slurry, 25g of SBS modifier, 2.0g of stabilizer, 18g of cationic emulsifier, 0.8 g, water 374.2g.

[0041] The preparation method of high softening point SBS modified emulsified asphalt comprises the steps:

[0042] (1) Heat 480g of base asphalt to 185°C, add 100g of catalytic cracking oil slurry, add 25g of SBS modifier and 2.0g of stabilizer under high-speed shearing conditions, shear for 45min, and then lower the temperature to 180°C, Stir and develop for 3.5 hours to obtain SBS modified asphalt for emulsification;

[0043] (2) Add 18g of cationic emulsifier MQK-1D and 0.8g of additive HEC into 374.2g of water, heat to 60°C, stir evenly, add hydrochloric acid, and adjust the pH value of the soap to 2;

[0044] (3) Add the SBS modified asphalt prepared in (1) into the asphalt tank of the colloid mill, heat and ...

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Abstract

The invention relates to SBS modified emulsified bitumen having a high softening point and a preparing method thereof. The SBS modified emulsified bitumen comprises, by weight, 45.0-60.0% of matrix bitumen, 1.5-3.0% of an SBS modifier, 3-15% of catalytic cracking oil slurry, 0.05-0.5% of a stabilizing agent, 0.8-2.5% of a cation emulsifier, 0-0.2% of an auxiliary agent and 32.0-42.0% of water. During preparation, SBS modified bitumen is firstly prepared, then the cation emulsifier and the auxiliary agent are added into hot water having a temperature of 50-70 DGE C to prepare a soap solution, and finally the SBS modified bitumen and the soap solution are subjected to emulsification together through a colloid mill, pressurization and cooling to obtain the SBS modified emulsified bitumen. The preparing method is simple and steps are easy to operate. The prepared SBS modified emulsified bitumen has a high SBS content, the high softening point, high ductility at 5 DEG C, and excellent high-temperature performance and low-temperature performance. An effective route is provided for high value-added utilization of the catalytic cracking oil slurry.

Description

technical field [0001] The invention relates to a high softening point SBS modified emulsified asphalt and a preparation method thereof, belonging to the technical field of asphalt production. Background technique [0002] With the rapid development of my country's transportation system, the focus of the highway industry has changed from "large-scale construction" to "equal attention to construction and maintenance", which puts forward higher requirements for road materials, especially asphalt materials, and also provides new opportunities and opportunities. challenge. Among them, modified emulsified asphalt has both "emulsified asphalt" and "modified asphalt characteristics". It does not need to be heated during use and can flow at room temperature. It has obvious advantages such as convenient construction, energy saving, environmental protection and asphalt consumption saving. , and has good high temperature stability after curing, low temperature crack resistance, elastic...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L53/02C08J3/03
CPCC08L95/00C08J3/03C08J2395/00C08L2201/08C08L2201/54C08L53/02
Inventor 付崇军张胜军夏斌蔡晓明魏鸿炎徐建军李荣平刘起付
Owner CNPC JIANGSU FUEL ASPHALT
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