Preparation method of emulsified modified asphalt based on zwitterionic Gemini emulsifier

A technology of emulsifying modified asphalt and zwitterions, which is applied in the fields of sulfonate preparation, organic chemistry, and building components, etc. It can solve the problems of poor emulsifier wetting effect and large addition amount, achieve high emulsification effect and improve pressure resistance The effect of high strength and stability

Inactive Publication Date: 2020-12-04
HUNAN CHENLI NEW MATERIAL CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method emulsified modified asphalt, the addition amount of polyoxyethylene ether surfactant is large, which shows that the wetting effect of zwitterionic modified asphalt emulsifier is poor.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of emulsified modified asphalt based on zwitterionic Gemini emulsifier
  • Preparation method of emulsified modified asphalt based on zwitterionic Gemini emulsifier
  • Preparation method of emulsified modified asphalt based on zwitterionic Gemini emulsifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of emulsified modified asphalt based on zwitterionic Gemini emulsifier, in parts by weight, its formula consists of: 65 parts of modified asphalt, 0.5 part of zwitterionic Gemini emulsifier, 6 parts of alumina sol (weight fraction is 20%, pH value is 5, the median particle size of alumina in the alumina sol is 50-60nm), 0.1 part of polyacrylamide, 1 part of calcium nitrite, 40 parts of water; wherein, the modified asphalt is The SBR modified asphalt, the SBR content in the SBR modified asphalt is 1%.

[0026] The preparation method of the emulsified modified asphalt of above-mentioned zwitterionic type Gemini emulsifier comprises the following steps:

[0027] Mix and stir the zwitterionic Gemini emulsifier, antifreeze, thickener, and water evenly, and heat to 55°C to obtain soap liquid; heat the modified asphalt to 138°C to obtain softened asphalt; separate the above soap liquid and softened asphalt at the same time Transported to the colloid mill, after uniform...

Embodiment 2

[0031] A kind of emulsified modified asphalt based on zwitterionic Gemini emulsifier, in parts by weight, its formula consists of: 60 parts of modified asphalt, 0.1 part of zwitterionic Gemini emulsifier, 3 parts of alumina sol (weight fraction is 30%, the pH value is 6, the median particle size of alumina in the alumina sol is 30-40nm), 0.2 parts of organic bentonite, 3 parts of calcium chloride, and 35 parts of water; wherein, the modified asphalt is SBS Modified asphalt, the SBS in the SBS modified asphalt is 3% by weight.

[0032] The preparation method of the emulsified modified asphalt of above-mentioned zwitterionic type Gemini emulsifier comprises the following steps:

[0033] Mix and stir the zwitterionic Gemini emulsifier, antifreeze, thickener, and water evenly, and heat to 40°C to obtain soap liquid; heat the modified asphalt to 125°C to obtain softened asphalt; separate the above soap liquid and softened asphalt at the same time Transported to the colloid mill, a...

Embodiment 3

[0037] A kind of emulsified modified asphalt based on zwitterionic Gemini emulsifier, in parts by weight, its formula consists of: 62 parts of modified asphalt, 0.3 part of zwitterionic Gemini emulsifier, 4 parts of alumina sol (weight fraction is 25%, the pH value is 7, the median particle size of alumina in the alumina sol is 30-50nm), 0.15 parts of carboxymethyl starch, 2 parts of sodium nitrite, 38 parts of water; wherein, the modified asphalt It is SBS modified asphalt, and the weight fraction of SBS in SBS modified asphalt is 1.53%.

[0038] The preparation method of the emulsified modified asphalt of above-mentioned zwitterionic type Gemini emulsifier comprises the following steps:

[0039] Mix and stir the zwitterionic Gemini emulsifier, antifreeze, thickener, and water evenly, and heat to 65°C to obtain soap liquid; heat the modified asphalt to 160°C to obtain softened asphalt; separate the above soap liquid and softened asphalt at the same time Transported to the co...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a preparation method of emulsified modified asphalt based on a zwitterionic Gemini emulsifier, which comprises the following steps: uniformly mixing and stirring the zwitterionic Gemini emulsifier, an antifreezing agent, a thickening agent and water, and conducting heating to 40-65 DEG C to obtain a liquid soap; heating the modified asphalt to 125 DEG C to 160 DEG C to obtain softened asphalt; respectively conveying the soap liquid and the softened asphalt into a colloid mill at the same time, conducting uniform dispersing and grinding through the colloid mill to obtain an oil-in-water emulsion, discharging the oil-in-water emulsion out of the system when the temperature of the emulsion is reduced to 60 DEG C or below, adding aluminum oxide sol into the system, andconducting uniform stirring to obtain the emulsified modified asphalt based on the zwitterionic Gemini emulsifier. According to the invention, the zwitterionic Gemini emulsifier with a special structure is synthesized, the zwitterionic Gemini emulsifier has high emulsifying effect, anti-settling effect and high wettability on asphalt, and the emulsified and modified asphalt has the advantages ofgood permeability and high stability.

Description

technical field [0001] The invention relates to an emulsified asphalt, in particular to a method for preparing emulsified modified asphalt based on a zwitterionic Gemini emulsifier, and belongs to the technical field of road engineering. Background technique [0002] Emulsified asphalt means that asphalt is thermally melted and subjected to mechanical shearing, and is dispersed in a state of fine particles in an aqueous solution containing an emulsifier to form an oily asphalt emulsion. When emulsified asphalt is used, it can be constructed at room temperature without heating. In road engineering, emulsified asphalt is suitable for asphalt surface treatment pavement, asphalt penetration pavement, normal temperature asphalt mixture pavement, and penetration layer, adhesive layer and sealing layer, etc. Compared with conventional asphalt and hot asphalt, the application of emulsified asphalt and its comprehensive performance have the characteristics of being harmless to human...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/03C08L95/00C08L53/02C08K13/06C08K3/34C08K3/16C08K3/28C08K5/21C08K3/22C07C303/32C07C309/14
CPCC07C303/32C08J3/03C08J2395/00C08J2453/02C08K3/28C08K3/346C08K5/21C08K13/06C08K2003/162C08K2003/2227C07C309/14
Inventor 曹冰
Owner HUNAN CHENLI NEW MATERIAL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap