SBS (styrene butadiene styrene)/SBR (styrene butadiene rubber) composite modified emulsified asphalt and preparation method thereof

A technology of emulsified asphalt and compound modification, which is applied in the direction of building components, building insulation materials, buildings, etc., can solve the problems of high Engler's viscosity and low solid content, and achieve the effect of low viscosity, high solid content and high softening point

Inactive Publication Date: 2014-07-30
中海沥青(泰州)有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The SBS modified emulsified asphalt prepared by this method has high softening point and duct

Method used

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  • SBS (styrene butadiene styrene)/SBR (styrene butadiene rubber) composite modified emulsified asphalt and preparation method thereof

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[0018] A kind of SBS / SBR composite modified emulsified asphalt of the present invention is made up of base asphalt, linear SBS, SBR latex, compatibilizer, stabilizer, viscosity reducer, emulsifier, hydrochloric acid and water, and the quality of described linear SBS is The mass of base asphalt is 3.5%~5.5%, the mass of compatibilizer is 1%~4% of the mass of base asphalt, the mass of stabilizer is 0.1%~0.4% of the mass of base asphalt, and the mass of viscosity reducer is 2.0% of the mass of base asphalt ~10.0%, the emulsifier quality is 0.5%~1.5% of the base asphalt quality, the SBR latex quality is 1%~5% of the base asphalt quality, the preparation method of the SBS / SBR composite modified emulsified asphalt comprises the following steps:

[0019] (1) Preparation of SBS modified asphalt: heat base asphalt to 180°C~190°C, add linear SBS, compatibilizer and stabilizer to base asphalt at the same time, and use high-speed shearing machine to shear and disperse for 60min~200min, Ma...

Embodiment 1

[0026] The component ratio of SBS / SBR composite modified emulsified asphalt is:

[0027] No. 70 heavy traffic asphalt 800g Compatibilizer 12g SBS 35g stabilizer 2.3g Emulsifier 6g Water (PH=2) 710g Viscosity reducer 32g SBR latex 30g

[0028] According to the above component distribution ratio, the following steps are used to prepare SBS / SBR composite modified emulsified asphalt:

[0029] (1) Heat the base asphalt to 185°C, add linear SBS, compatibilizer and stabilizer to the base asphalt at the same time, and use high-speed shearing machine to shear and disperse for 120 minutes to make SBS modified asphalt;

[0030] (2) Add emulsifier and hydrochloric acid into hot water at 70°C, adjust the pH value to 2, and make soap liquid;

[0031] (3) Keep the modified asphalt prepared in (1) at constant temperature to 138°C, add the modified asphalt, viscosity reducer and the soap solution prepared in step (2) to the colloid mill ...

Embodiment 2

[0034] The component ratio of SBS / SBR composite modified emulsified asphalt is:

[0035] No. 70 heavy traffic asphalt 800g Compatibilizer 24g SBS 36g stabilizer 2g Emulsifier 7g Water (PH=2) 580g Viscosity reducer 48g SBR latex 12g

[0036] According to the above component distribution ratio, the following steps are used to prepare SBS / SBR composite modified emulsified asphalt:

[0037](1) Heat the base asphalt to 185°C, add linear SBS, compatibilizer and stabilizer to the base asphalt at the same time, and use high-speed shearing machine to shear and disperse for 90 minutes to make SBS modified asphalt;

[0038] (2) Add emulsifier and hydrochloric acid into hot water at 65°C, adjust the pH value to 2, and make soap liquid;

[0039] (3) Keep the modified asphalt prepared in (1) at constant temperature to 130°C, add the modified asphalt, viscosity reducer and the soap solution prepared in step (2) to the colloid mill at t...

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Abstract

The invention relates to SBS (styrene butadiene styrene)/SBR (styrene butadiene rubber) composite modified emulsified asphalt. The SBS/SBR composite modified emulsified asphalt consists of matrix asphalt, linear SBS which accounts for 3.5%-5.5% of the weight of the matrix asphalt, compatilizer which accounts for 1%-4% of the weight of the matrix asphalt, stabilizer which accounts for 0.1%-0.4% of the weight of the matrix asphalt, viscosity reducer which accounts for 2.0%-10.0% of the weight of the matrix asphalt, emulsifier which accounts for 0.5%-1.5% of the weight of the matrix asphalt and SBS rubber latex which accounts for 1%-5% of the weight of the matrix asphalt. The SBS/SBR composite modified emulsified asphalt obtained in the invention has characteristics of being high in softening point, high in ductility, high in solid content and low in viscosity, achieves and is further higher than JTGF40-2004 product specification requirements of Ministry of Communications, and can be suitable for special high-grade bituminous pavements such as an ultrathin wearing layer, and the like as well as an associated construction process thereof.

Description

Technical field [0001] The invention involves the field of petrochemical and chemical industry. Specifically, it belongs to a method of emulsification and preparation methods for SBS / SBR composite modification. Background technique [0002] In the past two decades, my country has built a large number of asphalt pavements such as highways and first -level roads. In order to improve the quality of asphalt pavement and extend the service life of the highway, the maintenance of asphalt pavement has become particularly important.Emulsion asphalt has the advantages of energy saving and environmental protection and convenient construction. Therefore, emulsion asphalt has become one of the key materials for road maintenance and maintenance.Compared with ordinary emulsification asphalt, polymer modified emulsion asphalt has the advantages of high resistance, low temperature, good aging and adhesive, etc., and can be widely used in asphalt layers such as asphalt pavement.SBS / SBR composite ...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L53/02C08L9/08C08J3/03
Inventor 雷勇夏强斌张金钧王涛于慧明张晓峰郭维亮
Owner 中海沥青(泰州)有限责任公司
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