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SBS (styrene-butadiene-styrene) modified emulsified asphalt composition and preparation method thereof

A technology for emulsified asphalt and modified asphalt, applied in building structures, building components, building insulation materials, etc., can solve the problems of difficulty in obtaining emulsified SBS modified asphalt emulsion, poor emulsification effect, and difficulty in emulsification, and achieve storage stability. Excellent, low temperature ductility, good adhesion effect

Active Publication Date: 2011-07-13
XIAN ZHONGLI ASPHALT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because SBS modified asphalt has the characteristics of high viscosity and difficult emulsification. The emulsification effect of conventional asphalt emulsification process is poor, and it is difficult to obtain stable emulsified SBS modified asphalt emulsion.

Method used

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  • SBS (styrene-butadiene-styrene) modified emulsified asphalt composition and preparation method thereof
  • SBS (styrene-butadiene-styrene) modified emulsified asphalt composition and preparation method thereof
  • SBS (styrene-butadiene-styrene) modified emulsified asphalt composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A modified emulsified asphalt (SBS) composition, which is composed of base asphalt, SBS modifier, composite emulsifier, stabilizer, and hot water, and contains 35 to 65 parts of base asphalt by mass ratio, and 1 to 4 parts of SBS modifier, 0.3 to 3 parts of composite emulsifier, 0.05 to 0.5 part of stabilizer, 30 to 60 parts of hot water at 50°C to 70°C, wherein the base asphalt is road petroleum asphalt, and the The SBS modifier is a solid high molecular polymer thermoplastic rubber, and the composite emulsifier is a mixture of an amine cationic emulsifier and a non-ionic fluorocarbon emulsifier, and the compounding mass ratio of the compound is amine cationic emulsifier : Nonionic fluorocarbon emulsifier=90~99:1~10, the composite emulsifier also contains 0.1 part~0.25 part hydrochloric acid.

[0027] A kind of preparation method of modified emulsified asphalt, carries out according to the following steps successively:

[0028] 1) Preparation of modified asphalt (SBS)...

Embodiment 2

[0035] The material composition of SBS modified emulsified asphalt of the present invention is:

[0036] Base asphalt 60 parts

[0037] SBS modifier 1.5 parts

[0038] Compound emulsifier 1.5 parts

[0039] 36 parts of hot water at 50℃~70℃

[0040] Stabilizer 0.16 parts

[0041] Hydrochloric acid 0.2 parts

[0042] The preparation method of SBS modified emulsified asphalt of the present invention is:

[0043] Step 1: Prepare SBS modified asphalt

[0044] Heat 60 parts of base asphalt until melted, raise the temperature to 170°C~185°C, add 1.5 parts of SBS, stir at constant temperature for 10~30min to swell, after the swelling is completed, shear or grind until the SBS particles are ≤5 microns, shear or Continue to stir for 2 hours after grinding to prepare SBS modified asphalt for later use.

[0045] The second step: prepare emulsifier aqueous solution

[0046] Add 1.5 parts of compound emulsifier, 0.16 parts of formulated stabilizer and 0.2 parts of hydrochloric acid ...

Embodiment 3

[0052] The material composition of SBS modified emulsified asphalt of the present invention is:

[0053] Base asphalt 52 parts

[0054] SBS modifier 1.6 parts

[0055] Compound emulsifier 1.0 parts

[0056] 45 parts of hot water at 50℃~70℃

[0057] Stabilizer 0.2 parts

[0058]Hydrochloric acid 0.2 parts

[0059] The preparation method of SBS modified emulsified asphalt of the present invention is:

[0060] Step 1: Prepare SBS modified asphalt

[0061] Heat 52 parts of base asphalt until melted, raise the temperature to 170°C~185°C, add 1.6 parts of SBS, stir at constant temperature for 10~30min to swell, after the swelling is completed, shear or grind until the SBS particles are ≤5 microns, shear or Continue to stir for 2 hours after grinding to prepare SBS modified asphalt for later use.

[0062] The second step: prepare emulsifier aqueous solution

[0063] Add 1 part of compound emulsifier, 0.2 part of formulated stabilizer and 0.2 part of hydrochloric acid to 45 pa...

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Abstract

The invention discloses an SBS (styrene-butadiene-styrene) modified emulsified asphalt composition and a preparation method thereof. The SBS modified emulsified asphalt composition is prepared from base asphalt, an SBS modifier, a composite emulsifier, a stabilizer and hot water, wherein the base asphalt is road petroleum asphalt; the modifier is solid high-molecular-polymer thermoplastic rubber;and the composite emulsifier is compounded from an amine cationic emulsifier and a non-ionic fluorocarbon emulsifier. The preparation method comprises the following steps: preparing the SBS modified asphalt according to a production method of modified asphalt; proportionally preparing an emulsifier water solution from the emulsifier, water, stabilizer and hydrochloric acid; and emulsifying the emulsifier water solution and SBS modified asphalt by an emulsifying machine to obtain the SBS modified emulsified asphalt. The SBS modified emulsified asphalt composition has the advantages of favorable emulsifying effect, high storage stability, high content of evaporation residues, high softening point, high low-temperature ductility, favorable adhesive capacity with mineral aggregate, favorable properties on roads, and the like, and can be widely used in asphalt pavement maintenance engineering.

Description

technical field [0001] The invention relates to an asphalt material and a preparation method thereof, and mainly relates to a modified emulsified asphalt material for road construction and maintenance, in particular to a SBS modified emulsified asphalt composition and a preparation method thereof. Background technique [0002] Modified emulsified asphalt is used in the process of road construction and maintenance, such as micro-surfacing of road surface maintenance and repair, slurry seal layer, adhesive layer oil combined between pavement layers, bridge deck waterproofing, etc. At present and in the future, my country's highway construction will continue, and a large number of completed highways will enter the maintenance period. Therefore, the demand for modified emulsified asphalt in my country's highway projects will continue to grow. SBS and SBR are two commonly used asphalt modifiers, but the modified emulsified asphalt currently produced on a large scale is only modif...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L53/02C08J3/03
Inventor 高文娟张晓宏张俊博邓琦韩耀斌
Owner XIAN ZHONGLI ASPHALT CO LTD
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