High-performance SBS modified emulsified asphalt and SBS latex, and preparation methods thereof

An emulsified asphalt, high-performance technology, applied in building components, building insulation materials, buildings, etc., can solve problems such as poor stability, insufficient performance indicators, difficulty in emulsifying SBS modified asphalt, etc., to improve storage stability and storage stability Strong, high and low temperature performance

Active Publication Date: 2020-04-17
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a high-performance SBS modified emulsified asphalt and its preparation method, which solves the difficult emulsification, poor stability and insufficient performance indicators of the SBS modified asphalt in the prior art. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The present embodiment provides a kind of preparation method of SBS latex, and this method comprises the following steps:

[0048] Step S1, weighing the SBS with the model T6302 and the SBS with the model D1101, and mixing them uniformly at a weight ratio of 1:3 to form a mixture A;

[0049] Step S2, weighing two solvents, n-pentane and dimethylformamide, and mixing them uniformly in a weight ratio of 2:1 to form a mixture B;

[0050] Step S3, weighing mixture A and mixture B, stirring evenly in a weight ratio of 1:2, and then swelling to form mixture C;

[0051]Step S4, weighing stearamidopropyl dimethylamine and dioctyldodecyl lauroyl glutamate, and mixing them uniformly in a weight ratio of 3:1 to form a mixture D;

[0052] Step S5, weighing 100 parts by weight of mixture C, 100 parts by weight of water and 5 parts by weight of mixture D, and stirring at a high speed to form mixture E;

[0053] In step S6, the mixture E is distilled to obtain SBS latex.

[0054] S...

Embodiment 2

[0058] This example provides a high-performance SBS modified emulsified asphalt, which is made of the following raw materials: 57 parts of base asphalt, 0.4 parts of modifier, 6 parts of SBS latex, 1 part of emulsifier, and 0.5 parts of stabilizer Part, hydrochloric acid are 1 part, and balance is water, and the sum of the parts by weight of raw materials is 100 parts.

[0059] Specifically, the SBS latex is prepared by the preparation method of the SBS latex described in Example 1.

[0060] Specifically, the modifying agent is made by mixing nitrocellulose and cyanoacrylate in a weight ratio of 5:1;

[0061] Specifically, the emulsifier is made by mixing stearamidopropyl dimethylamine, gemini emulsifier and dioctyldodecyl lauroyl glutamate in a weight ratio of 2:1:2;

[0062] Specifically, the stabilizer is made by mixing hydroxyl carbon nanotubes, nano-attapulgite powder and lithium magnesium silicate in a weight ratio of 1:1:2.

[0063] The preparation method of the high-...

Embodiment 3

[0070] This example provides a high-performance SBS modified emulsified asphalt, which is made of the following raw materials: 64 parts of base asphalt, 2.0 parts of modifier, 12 parts of SBS latex, 3 parts of emulsifier, and 2.0 parts of stabilizer Parts, hydrochloric acid are 1.5 parts, and balance is water, and the sum of the parts by weight of raw materials is 100 parts.

[0071] Concrete, SBS latex, modifier, emulsifier and stabilizer are all identical with embodiment 2.

[0072] The preparation method of the high-performance SBS modified emulsified asphalt in this example is basically the same as that in Example 2.

[0073] According to the current specifications of JTG E20-2011 and JTG 5142-2019, the performance test and analysis of the prepared samples were carried out. The results showed that the 1.18mm sieve residue was 0.03%, the 5d storage stability was 1.89%, the evaporation residue content was 69.4%, the evaporation residue penetration was 53.2 (0.1mm), and the ...

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Abstract

The invention provides a high-performance SBS modified emulsified asphalt and an SBS latex, and preparation methods thereof. The high-performance SBS modified emulsified asphalt is prepared from matrix asphalt, a modifier, the SBS latex, an emulsifier, a stabilizer, hydrochloric acid and water; and the SBS latex is prepared from SBS with the model of T6302, SBS with the model of D1101, n-pentane,dimethylformamide, stearamidopropyl dimethylamine, dioctyldodecyl lauroyl glutamate and water. The prepared modified emulsified asphalt is high in solid content and stable in performances; the storagestability is high, and the 5d storage stability is far lower than the standard requirement index; and the high-low temperature performance of evaporation residues is excellent. The solid content of the prepared SBS latex can reach 40-50%, and the storage stability of the SBS latex can reach one month or more, so it can be guaranteed that the modified emulsified asphalt prepared in the later period has excellent high and low temperature performances.

Description

technical field [0001] The invention relates to the technical field of road engineering, relates to modified emulsified asphalt, in particular to a high-performance SBS modified emulsified asphalt, SBS latex and a preparation method. Background technique [0002] With the arrival of the peak of road maintenance in our country, the role of emulsified asphalt in maintenance projects is becoming more and more important. Due to its excellent properties such as low energy consumption, long construction period, convenient construction, and strong adhesion, emulsified asphalt is more and more used in functional layers such as permeable layers, sticky layers, bridge deck waterproof adhesive layers, and slurry seal layers. And asphalt surface treatment, asphalt penetration pavement and other surface layers. Modified emulsified asphalt is a product obtained by modifying emulsified asphalt with emulsion polymer or emulsifying polymer modified asphalt. It has the advantages of modified...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L1/18C08K13/02C08K3/04C08K3/34C08J3/03
CPCC08J3/03C08J2395/00C08J2401/18C08J2453/02C08K3/34C08K3/346C08K13/02C08K2201/003C08K2201/004C08K2201/011C08K3/041
Inventor 何锐郑睢宁高莉宁陈华鑫郭风俊刘斌清况栋梁罗正斌
Owner CHANGAN UNIV
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