Composition of cationic asphalt emulsifier, preparation method and application thereof

An asphalt emulsifier, cationic technology, applied in chemical instruments and methods, chemical/physical processes, building components, etc., can solve the problems of coarse emulsion particles, insignificant improvement of asphalt high temperature performance, poor storage stability, etc., and achieve good temperature resistance. The effect of improving the strength of the seal layer and its anti-deformation ability, and excellent low-temperature cracking resistance

Inactive Publication Date: 2010-09-29
北京万博汇佳科贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the modified emulsified asphalt is produced by adding SBR latex. SBR modified emulsified asphalt has the following shortcomings: ①SBR latex mainly improves the low-temperature performance of asphalt, and the high-temperature performance of asphalt is not significantly improved; ②The compatibility between SBR latex and emulsifier is poor , poor road performance
In order to improve the high temperature performance of modified emulsified asphalt, the emulsification of SBS modified asphalt usually has problems such as difficult emulsification, coarse emulsion particles, poor storage stability, and poor actual road performance.
[0003] The most critical factor affecting the road performance of emulsified asphalt is the asphalt emulsifier. At present, cationic emulsifiers in my country are mainly quaternary ammonium salts and their compounds. Adhesion is not good, and SBS modified asphalt cannot be emulsified, which directly affects the road performance of emulsified asphalt

Method used

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  • Composition of cationic asphalt emulsifier, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Preparation of cationic emulsifier: put 35g of octadecylamine, 10g of stearyl-1,3-propylenediamine and 10g of C 17 h 35 -CO-NH-C 2 h 4 -NH 2 , and 10 g of octadecylamine polyoxyethylene ether (AC1802) were sequentially put into 35 g of isopropanol, stirred at 80° C. for 1 h, and mixed uniformly to obtain a cationic emulsifier.

[0016] Preparation of modified asphalt: heat Liaohe 90# base asphalt to 160°C, add 3.5% SBS, keep stirring for 60 minutes, and then use colloid mill to grind for 30-90 minutes to make SBS modified asphalt. Keep the SBS modified asphalt at 165-170°C for later use.

[0017] Preparation of soap solution: Weigh 5 g of the cationic emulsifier, add it to 492 g of hot water, and add 3 g of 36% hydrochloric acid. At this time, the pH value of the solution is 2.0, which is the soap solution. Keep the temperature of the soap solution at 55-60°C.

[0018] Turn on the colloid mill, add 500g of SBS modified asphalt with a temperature of 165°C and the a...

Embodiment 2

[0020] Preparation of cationic emulsifier: put 15g octadecylamine, 25g tallow-1,3-propylenediamine and 20gC 17 h 35 -CO-NH-(C 2 h 4 NH) 4 H, and 15 g of octadecylamine polyoxyethylene ether (AC1810) were put into 25 g of isopropanol in sequence, and stirred at 90° C. for 1 h to obtain a cationic emulsifier.

[0021] Preparation of soap solution: Weigh 6 g of the cationic emulsifier, add it to 341 g of hot water, and add 3 g of hydrochloric acid with a concentration of 36%. At this time, the pH value of the solution is 2.0, which is soap solution. Keep the temperature of the soap solution at 55-60°C.

[0022] Turn on the colloid mill, add 650 g of the SBS modified asphalt prepared in Example 1 at a temperature of 165° C. and the above soap solution into the colloid mill at the same time for shearing to obtain emulsified SBS modified asphalt. This emulsified asphalt is high-viscosity and high-concentration emulsified modified asphalt, which is suitable for ultra-thin wear l...

Embodiment 3

[0024] Preparation of cationic emulsifier: 15g of hydrogenated tallow primary amine, 10g of oleyl-1,3-propylenediamine and 30g of C 17 h 33 -CO-NH-(C 2 h 4 -NH) 4 H, and 10 g of octadecylamine polyoxyethylene ether (AC1820) were put into 35 g of isopropanol in sequence, and stirred at 80° C. for 1 h to obtain a cationic emulsifier.

[0025] Preparation of soap liquid: Weigh 8 g of the cationic emulsifier, add it to 358 g of hot water, and add 4 g of 36% hydrochloric acid. At this time, the pH value of the solution is 2.0, which is soap liquid. Keep the temperature of the soap solution at 55-60°C.

[0026] Turn on the colloid mill, and add 630 g of the SBS modified asphalt prepared in Example 1 at a temperature of 165°C and the above soap solution into the colloid mill for shearing to obtain emulsified SBS modified asphalt. This emulsified asphalt is a high-viscosity emulsified modified asphalt, which is suitable as a modified viscous layer oil for expressways, and can als...

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Abstract

The invention discloses composition of a cationic asphalt emulsifier, a preparation method and application thereof. The cationic asphalt emulsifier comprises the following components in percentage by weight: (A) 15 to 35 percent of C12 to C22 aliphatic amine; (B) 10 to 25 percent of C12 to C22 aliphatic alkyl propenyl diamine; (C) 10 to 30 percent of C12 to C22 fatty amido polyamine; (D) 10 to 30 percent of a non-ionic component namely fatty amine polyethenoxy ether; and (E) 20 to 55 percent of solvent small molecule alcohol. The preparation method comprises the following steps of: putting a solvent E into a reaction kettle; heating the solvent E to the temperature of between 40 and 90 DEG C; adding the components of A, B, C and D into the reaction kettle; and uniformly stirring the mixture to obtain the cationic asphalt emulsifier. The cationic asphalt emulsifier of the invention can directly emulsify SBS modified asphalt, and overcomes the defects that other emulsifiers can only emulsify matrix asphalt, and the emulsified asphalt is easy to be segregated and has low high-temperature resistance after being added with an SBS latex.

Description

technical field [0001] The invention relates to a cationic asphalt emulsifier, a preparation method and its application. The cationic emulsified asphalt prepared by this emulsifier can be applied to new high-grade asphalt pavement, and can also be used for preventive maintenance and minor diseases of asphalt pavement or cement pavement corrective maintenance. When used for new asphalt pavement, it is mainly used as a modified adhesive layer or seal layer of the road surface. When used for preventive maintenance, it is mainly used for chip seals and ultra-thin wear courses. Background technique [0002] Emulsified asphalt, especially cationic emulsified asphalt, has been widely promoted and applied in road construction and maintenance due to its many excellent application characteristics such as energy saving and environmental protection, improving construction conditions, and effectively reducing excessive aging of asphalt. Moreover, as road engineering requires higher and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08J3/03B01F17/46B01F17/22B01F17/16C08L53/02E01C11/00C09K23/16C09K23/22C09K23/46
Inventor 王建荣
Owner 北京万博汇佳科贸有限公司
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