Composition of cationic asphalt emulsifier, preparation method and application thereof

An asphalt emulsifier and cation 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 Change ability and anti-fatigue ability, improve the strength of the seal layer and its anti-deformation ability, excellent effect of low temperature cracking resistance

Inactive Publication Date: 2011-11-16
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: combine 35 g of octadecylamine, 10 g of stearyl-1,3-propylene diamine and 10 g of C 17 H 35 -CO-NH-C 2 H 4 -NH 2 , and 10 g of octadecylamine polyoxyethylene ether (AC1802) were put into 35 g of isopropanol in sequence, and stirred at 80° C. for 1 h to make them evenly mixed to obtain a cationic emulsifier.

[0016] Preparation of modified asphalt: heat Liaohe 90# base asphalt to 160℃, add 3.5% SBS, keep stirring for 60min, then grind with colloid mill for 30-90min to make SBS modified asphalt. The SBS modified asphalt was kept at 165-170°C for later use.

[0017] Preparation of soap solution: Weigh 5g of the cationic emulsifier, add 492g of hot water, and add 3g 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 soap temperature at 55-60°C.

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

Embodiment 2

[0020] Preparation of cationic emulsifier: 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 6g of the cationic emulsifier, add 341g of hot water, and add 3g 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 soap temperature at 55-60°C.

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

Embodiment 3

[0024] Preparation of cationic emulsifier: 15g hydrogenated tallow primary amine, 10g oleyl-1,3-propylene diamine and 30g 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 solution: Weigh 8g of the cationic emulsifier, add it to 358g of hot water, and add 4g 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 soap temperature at 55-60°C.

[0026] The colloid mill was turned on, and 630 g of SBS modified asphalt with a temperature of 165° C. prepared in Example 1 and the above soap solution were simultaneously added to the colloid mill for shearing to obtain emulsified SBS modified asphalt. This emulsified asphalt is a high-viscosity emulsified modified asphalt, suitable for use as a modified sticky oil for highw...

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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 30percent 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 application thereof. The cationic emulsified asphalt prepared by the emulsifier can be applied to new high-grade asphalt pavements, and can also be used for preventive maintenance and minor diseases of asphalt pavements or cement pavements corrective maintenance. When used for new asphalt pavement, it is mainly used as modified adhesive layer or seal layer of pavement. When used for preventive maintenance, it is mainly used for gravel seal and ultra-thin wear layer. Background technique [0002] Emulsified asphalt, especially cationic emulsified asphalt, has been popularized and applied more and more widely 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 asphalt aging. Moreover, with the increasing requiremen...

Claims

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Application Information

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Patent Type & Authority Patents(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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