Manufacturing method of liquid asphalt modifier

A manufacturing method, liquid asphalt technology, applied in the direction of building structure, building components, building insulation materials, etc., can solve the problems of high processing cost, limited application, material aging, etc., to save equipment investment, simplify production process, avoid material aging effect

Inactive Publication Date: 2005-05-25
SHANXI PROVINCIAL RES INST OF COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This modified asphalt processing method has the following problems: (1) due to processing SBS modified asphalt at high temperature, it is easy to cause aging of materials; (2) processing SBS equipment has complex structure and high processing cost; (3) processed The thermal storage stability of modified asphalt is not good, segregation phenomenon is easy to occur, and the quality is unstable; (4) SBS modified asphalt processed by using the above-mentioned solid SBS is difficult to process SBS modified asphalt on a large number of existing domestic emulsification devices. Therefore, only styrene-butadiene latex (SBR) is generally used for modified emulsified asphalt in my country, which limits the application of SBS in modified emulsified asphalt.

Method used

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  • Manufacturing method of liquid asphalt modifier
  • Manufacturing method of liquid asphalt modifier

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] First, 20 kilograms of solid SBS (produced by Beijing Yanshan Petrochemical Company Rubber Factory, Guochuang 1 # ) and 60 kg of toluene were added to a reaction kettle equipped with a common stirrer and a high-speed shearing device, heated to 70°C, and maintained at a temperature not lower than this until the SBS was completely dissolved, and then 0.5 kg of polydecanol was added to the kettle. Oxyethylene ether sodium sulfate, 0.5 kg of OP-10 non-ionic surfactant and 60 kg of water and mix evenly, stop stirring, start the high-speed shear emulsifier, emulsify for 30 minutes, when the emulsified liquid particle diameter is 2 μm When the time is below, stop the high-speed shear emulsifier, and finally distill at 30-60°C and 0.070-0.085Mpa pressure to recover the toluene in it to obtain liquid SBS asphalt modifier.

Embodiment 2

[0023] The tensio-active agent that adds in reactor is 0.5 kilogram of cetyltrimethylammonium chloride and 0.5 kilogram of lauryl amido alkylimidazoline, and all the other are with embodiment 1.

Embodiment 3

[0025] First, 20 kilograms of solid SBS (produced by Beijing Yanshan Petrochemical Company Rubber Factory, Guochuang 1 # , star-shaped) and 60 kg of benzene are added to a reaction kettle equipped with a common stirrer and a high-speed shearer, heated to 70 ° C, and maintained at a temperature not lower than this until the SBS is completely dissolved, and then 0.5 kg of alkyl Phenol polyoxyethylene ether nonionic surfactant, start the stirrer on the reactor, make surfactant all be dissolved in it, then add the preprepared by 0.5 kilogram of sorbitan monostearate polyoxygen Mix the mixture of vinyl ether, 0.5 kg starch and 60 kg water evenly, stop stirring, start the high-shear emulsifier, emulsify for 30 minutes, and stop the high-shear emulsifier when the emulsified particle diameter is below 2 μm. Finally, distill at 30-60°C and 0.070-0.085Mpa pressure to recover the benzene in it to obtain liquid SBS asphalt modifier.

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Abstract

A liquid asphalt modified able to be directly sprayed into asphalt at the road construction site is prepared from solid SBS through dissolving it in organic solvent, adding surfactant and water, emulsifying, and recovering organic solvent from SBS emulsion.

Description

technical field [0001] The invention relates to a method for manufacturing an asphalt modifier. Background technique [0002] Asphalt mainly comes from the bottom residue in the petroleum refining process, and is widely used in road engineering due to its high boiling point, hydrophobicity, good cohesiveness, weather resistance and low price. In recent years, due to the continuous increase of traffic volume and vehicle axle load, large-scale vehicles and serious overloading, ordinary asphalt can no longer meet the requirements of highway engineering. At that time, modified asphalt is generally used to pave the road surface. Modified asphalt generally refers to polymer-modified asphalt, that is, a certain amount of polymer is mixed with ordinary asphalt to improve the road performance of asphalt. Commonly used polymers include the following: (1) thermoplastic rubber: such as styrene-butadiene-styrene block copolymer (SBS), styrene-isoprene-styrene block copolymer (SIS) etc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/08C08L95/00
Inventor 韩萍赵队家
Owner SHANXI PROVINCIAL RES INST OF COMM
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