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A kind of preparation method of montmorillonite styrene-butadiene rubber composite modified emulsified asphalt

A technology of composite modified and emulsified asphalt, which is applied to building components, building insulation materials, buildings, etc., can solve the problems of low-temperature ductility reduction and low-temperature performance damage of asphalt, and achieve excellent high-low temperature performance, low cost, and stable storage The effect of improving the performance and road performance

Active Publication Date: 2018-06-26
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the emulsified montmorillonite modified asphalt improves the thermal stability of the asphalt, the low-temperature ductility decreases, which impairs the low-temperature performance of the asphalt

Method used

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  • A kind of preparation method of montmorillonite styrene-butadiene rubber composite modified emulsified asphalt
  • A kind of preparation method of montmorillonite styrene-butadiene rubber composite modified emulsified asphalt

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Effect test

Embodiment 1

[0017] A kind of montmorillonite styrene-butadiene rubber composite modified emulsified asphalt, its component distribution ratio is: 200g of petroleum asphalt, 4g of montmorillonite styrene-butadiene rubber obtained by spray drying, wherein the mass ratio of montmorillonite and styrene-butadiene rubber is 3:5 , compound emulsifier 4g, wherein the mass ratio of nonionic emulsifier OP-10 to anionic emulsifier sodium dodecylbenzenesulfonate is 1:2, and water 200g.

[0018] According to the above-mentioned component distribution ratio, adopt the following steps to prepare montmorillonite styrene-butadiene rubber composite modified emulsified asphalt:

[0019] (1) Heat the base asphalt to 135°C, add the montmorillonite styrene-butadiene rubber composite material to the base asphalt, and use a high-speed shearing machine to cut at 2500r / min for 80min to make a composite modified montmorillonite styrene-butadiene rubber asphalt;

[0020] (2) Add emulsifier OP-10 and sodium dodecylb...

Embodiment 2

[0027] A montmorillonite styrene-butadiene rubber composite modified emulsified asphalt, its component distribution ratio is: 200g of petroleum asphalt, 20g of montmorillonite styrene-butadiene rubber obtained by spray drying, wherein the mass ratio of montmorillonite and styrene-butadiene rubber is 1:1 , Compound emulsifier 10g, wherein the mass ratio of non-ionic emulsifier OP-10 to ionic emulsifier sodium dodecylbenzenesulfonate is 1:2, and water 200g.

[0028] According to the above-mentioned component distribution ratio, adopt the following steps to prepare montmorillonite styrene-butadiene rubber composite modified emulsified asphalt:

[0029] (1) Heat the base asphalt to 160°C, add the montmorillonite styrene-butadiene rubber composite material to the base asphalt, and use a high-speed shearing machine to cut at 4000r / min for 120min to make a composite modification of montmorillonite styrene-butadiene rubber asphalt;

[0030] (2) Add the emulsifier into hot water at 75...

Embodiment 3

[0033] A kind of montmorillonite styrene-butadiene rubber composite modified emulsified asphalt, its component distribution ratio is: petroleum asphalt 200g, the montmorillonite styrene-butadiene rubber obtained by spray drying 12g, wherein the mass ratio of montmorillonite and styrene-butadiene rubber is 4:5 , Compound emulsifier 6g, wherein the mass ratio of non-ionic emulsifier OP-10 to ionic emulsifier sodium dodecylbenzenesulfonate is 1:2, and water 200g.

[0034] According to the above-mentioned component distribution ratio, adopt the following steps to prepare montmorillonite styrene-butadiene rubber composite modified emulsified asphalt:

[0035] (1) Heat the base asphalt to 155°C, add the montmorillonite styrene-butadiene rubber composite material to the base asphalt, and use a high-speed shearing machine to cut at 3000r / min for 90min to make a composite modified montmorillonite styrene-butadiene rubber asphalt;

[0036] (2) Add the emulsifier into hot water at 68°C,...

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Abstract

The invention discloses a preparation method of montmorillonite butadiene styrene rubber compound modified emulsified asphalt. By mixing modified asphalt and emulsion at a certain ratio, the method sequentially comprises the following steps: preparing the modified asphalt by mixing a modifying agent and matrix asphalt at a certain ratio, wherein the modifying agent is prepared by spraying and drying montmorillonite suspension and styrene butadiene latex; adding emulsified soap liquid prepared from the modifying agent and water into the modified asphalt; shearing at a high speed and uniformly mixing to obtain the nano montmorillonite / butadiene styrene rubber compound modified emulsified asphalt. The compound modified emulsified asphalt prepared by the invention has good high-temperature and low-temperature performances and pavement performance, and the storage stability of the compound modified emulsified asphalt is improved. Meanwhile, the preparation method has the advantages of simple process, low cost, energy saving and environment protection, and the compound modified emulsified asphalt can be easily popularized and applied.

Description

technical field [0001] The invention relates to montmorillonite styrene-butadiene rubber composite modified asphalt and emulsified asphalt processing technology, in particular to an emulsified modified asphalt and a preparation method thereof. The invention provides an emulsified asphalt that is safer than hot asphalt, energy-saving and environment-friendly, and is mainly used for road upgrading and maintenance and new road construction. Background technique [0002] In recent years, my country's expressway industry has developed rapidly, but with the continuous increase of traffic volume and vehicle load, early damage to asphalt pavement has gradually appeared. Emulsified asphalt has the advantages of energy saving, environmental protection and convenient construction, so emulsified asphalt has become the main material for road maintenance. [0003] Among the existing preparation methods of emulsified modified asphalt, there are emulsified SBR modified asphalt and emulsifi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L9/06C08K3/34
CPCC08L95/005C08L9/06C08K3/346
Inventor 李晓林李胜杰王益庆郑广宇沈家锋张立群
Owner BEIJING UNIV OF CHEM TECH