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A kind of asphalt emulsifier and preparation method thereof

An asphalt emulsifier and catalyst technology, applied in building components, building insulation materials, buildings, etc., can solve the problems of limited emulsifying ability and poor stability of emulsified asphalt, and achieve simple preparation method, strong emulsifying ability, and avoid modification and easy separation. layer effect

Active Publication Date: 2019-02-01
SHANXI PROVINCIAL RES INST OF COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current self-emulsifying water-based epoxy resin has limited emulsifying ability, and the emulsified asphalt prepared as an emulsifier has poor stability.

Method used

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  • A kind of asphalt emulsifier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Preparation of emulsifier: (1) Dissolve 0.1mol of bisphenol A epoxy resin E-51 with 50ml of acetone at 40°C, then slowly add 0.1mol of diethanolamine dropwise, then raise the temperature to 80°C and react for 2h to obtain di Epoxy resin E-51 modified by ethanolamine; (2) Add 0.2mol MDI to 0.2mol PEG-200 and 1.8g stannous octoate, and react for 2 hours under nitrogen protection at 40°C to obtain a polyurethane prepolymer; Diethanolamine-modified epoxy resin E-51 was slowly added dropwise to the polyurethane prepolymer, reacted at 50°C for 1 hour, and then heated to 70°C for 2 hours to obtain an asphalt emulsifier.

[0025] Preparation of emulsified asphalt: First weigh 20g of the above emulsifier and add 200g of warm water at 55°C to dissolve it, then add water to 350g, add dilute hydrochloric acid to about pH=2, and finally add water to 400g to obtain soap liquid; then take SK90# asphalt Heat 600g to 140°C, heat the above 400g soap solution to 60°C, mix the asphalt and ...

Embodiment 2

[0031] Preparation of emulsifier: (1) Dissolve 0.1mol of bisphenol A epoxy resin E-54 with 50ml of toluene at 60°C, then slowly add 0.1mol of diethanolamine dropwise, then raise the temperature to 80°C for 3 hours to obtain di Epoxy resin E-54 modified by ethanolamine; (2) 0.2mol TDI was added to 0.2mol PEG-400 and 2.3g stannous octoate, and reacted for 3h under nitrogen protection at 50°C to obtain a polyurethane prepolymer; Diethanolamine-modified epoxy resin E-54 was slowly added dropwise to the polyurethane prepolymer, reacted at 60°C for 2 hours, and then heated to 80°C for 2 hours to obtain an asphalt emulsifier.

[0032] Preparation of emulsified asphalt: First weigh 20g of the above emulsifier and add 200g of warm water at 55°C to dissolve it, then add water to 350g, add dilute hydrochloric acid to about pH=2, and finally add water to 400g to obtain soap liquid; then take SK90# asphalt Heat 600g to 140°C, heat the above 400g soap solution to 60°C, mix the asphalt and s...

Embodiment 3

[0038] Preparation of emulsifier: (1) Dissolve 0.1mol of bisphenol A epoxy resin E-44 with 50ml of xylene at 60°C, then slowly add 0.11mol of diethanolamine dropwise, then heat up to 90°C and react for 4 hours to obtain Diethanolamine-modified epoxy resin E-44; (2) 0.22mol MDI was added to 0.22mol PEG-400 and 2.6g stannous octoate, and reacted for 4h under nitrogen protection at 50°C to obtain a polyurethane prepolymer; The above-mentioned diethanolamine-modified epoxy resin E-44 was slowly added dropwise to the polyurethane prepolymer, reacted at 50°C for 2 hours, and then heated to 70°C for 2 hours to obtain an asphalt emulsifier.

[0039]Preparation of emulsified asphalt: First weigh 20g of the above emulsifier and add 200g of warm water at 55°C to dissolve it, then add water to 350g, add dilute hydrochloric acid to about pH=2, and finally add water to 400g to obtain soap liquid; then take SK90# asphalt Heat 600g to 140°C, heat the above 400g soap solution to 60°C, mix the ...

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Abstract

The invention relates to a multifunctional asphalt emulsifier and a preparation method thereof. The preparation method comprises the following specific steps: dissolving bisphenol A with an organic solvent at 40-60 DEG C, slowly dropwise adding diethanolamine, heating to 70-90 DEG C after dropwise addition and reacting for 2-4 h to obtain diethanolamine-modified bisphenol A epoxy resin; adding diisocyanate into polyethylene glycol and a catalyst, reacting at 40-60 DEG C under nitrogen protection for 2-4 h to obtain a polyurethane prepolymer; slowly dropwise adding the above diethanolamine-modified bisphenol A epoxy resin into the polyurethane prepolymer, reacting at 50-70 DEG C for 1-2 h, heating to 70-90 DEG C and reacting for 1-2 h so as to obtain the multifunctional asphalt emulsifier. In comparison with the prior art, the multifunctional asphalt emulsifier is an emulsifier and a modifier. By introducing waterborne epoxy into emulsified asphalt while emulsification, the phenomenon of layering which is easily caused by the step of emulsification before modification is avoided.

Description

technical field [0001] The invention belongs to the technical field of asphalt materials for road engineering, and in particular relates to an asphalt emulsifier and a preparation method thereof. Background technique [0002] As a daily road maintenance material, emulsified asphalt has many advantages such as simple construction, energy saving, pollution reduction and economy, and is widely used in asphalt pavement maintenance and partial repair. However, there are still disadvantages such as low adhesion, poor aging resistance, high temperature sensitivity, and insufficient strength, which cannot meet the requirements of large traffic volume and heavy traffic. Therefore, it is imperative to modify the emulsified asphalt by adding different substances to improve its inherent defects. [0003] The excellent mechanical properties, adhesive properties, high temperature stability and corrosion resistance of waterborne epoxy resin can endow the modified emulsified asphalt with s...

Claims

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Application Information

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IPC IPC(8): C08G18/58C08G18/48C08G18/10C08G18/80C08G18/65C08G18/32C08J3/03C08L95/00C08L75/08C04B28/04
CPCC04B28/04C04B2111/0075C08G18/10C08G18/4833C08G18/584C08G18/8016C08G18/8019C08J3/03C08J2395/00C08J2475/08C08L95/00C08G18/58C08L75/08C04B24/36C04B14/02C04B24/281
Inventor 裴强杜素军庞瑾瑜畅润田薛君郭赢赢
Owner SHANXI PROVINCIAL RES INST OF COMM
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