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Double-oil-chain and composite type slow-breaking quick-setting asphalt emulsifier as well as preparation method and application thereof

An asphalt emulsifier, slow cracking and fast setting technology, applied in chemical instruments and methods, preparation of organic compounds, carboxylic acid amide preparation, etc., to achieve the effect of increasing the number, improving stability and reducing the speed of demulsification

Active Publication Date: 2015-11-11
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dual-oil chain structure of the composite asphalt emulsifier of this patent application has not been reported in the literature yet

Method used

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  • Double-oil-chain and composite type slow-breaking quick-setting asphalt emulsifier as well as preparation method and application thereof
  • Double-oil-chain and composite type slow-breaking quick-setting asphalt emulsifier as well as preparation method and application thereof
  • Double-oil-chain and composite type slow-breaking quick-setting asphalt emulsifier as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of emulsifier: Put 67.97g (0.1mol) of OP-10 (nonylphenol polyoxyethylene ether-10) and 0.1mL of concentrated sulfuric acid (95-98% by mass) into a three-necked flask, start stirring, and raise the temperature to 80 Keep the ℃ constant, then slowly add 12.91g (0.14mol) of epichlorohydrin dropwise, the dropwise addition is completed in half an hour, continue to react for 12 hours after the dropwise addition, and evaporate the remaining epichlorohydrin to obtain intermediate a;

[0030] Add 18.90 g (0.1 mol) of tetraethylenepentamine to intermediate a, raise the temperature to 90° C., and stir at this temperature for 6 hours to obtain intermediate b;

[0031] Add 25.12g (0.1mol) of soybean acid into intermediate b, raise the temperature to 150°C, and stir and react at this temperature for 5 hours to obtain a double oil chain, composite slow-cracking and fast-setting asphalt emulsifier.

[0032] Carry out preliminary detection of infrared spectrum to this pure p...

Embodiment 2

[0041] Preparation of emulsifier: Change 67.97g (0.1mol) OP-10 to 83.60g (0.1mol) OP-15, and refer to Example 1 for the remaining steps. The target emulsifier was obtained. Among them, m=15, r=4, n=16

[0042] Preparation of aqueous emulsifier solution: Example 1 was repeated.

[0043] Preparation of asphalt emulsion: Preheat the colloid mill with warm water at 80-90°C, add the above-mentioned emulsifier aqueous solution into the colloid mill, then quickly add 100g of hot asphalt at a temperature of 120-130°C into the colloid mill, and keep stirring for 1min, that is Obtain uniform and fine asphalt emulsion.

[0044] The performance test data shows that the emulsified asphalt is cationic and can be stored stably for more than 5 days. The evaporation residue is 53.5%, and the residue on the sieve is 0.052%. It is slow-cracking when mixed with primary limestone mineral material. The initial setting time is 140min. It meets the requirements of "Technical Specifications for Hi...

Embodiment 3

[0046] Preparation of emulsifier: 25.12g (0.1mol) of soybean acid was changed to 26.18g (0.1mol) of tall oil fatty acid, and the remaining steps were referred to Example 1. The target emulsifier was obtained. Among them, m=10, r=4, n=14

[0047] Preparation of aqueous emulsifier solution: Example 1 was repeated.

[0048] Preparation of asphalt emulsion: Example 1 was repeated.

[0049] The performance test data shows that the emulsified asphalt is cationic and can be stored stably for more than 5 days. The evaporation residue is 52.8%, and the residue on the sieve is 0.039%. 135min. It meets the requirements of "Technical Specifications for Highway Asphalt Construction".

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Abstract

The invention provides a double-oil-chain and composite type slow-breaking quick-setting asphalt emulsifier as well as a preparation method and application thereof. The structural formula of the emulsifier is as follows (shown in the description), wherein m is equal to 10 or 15, r is equal to 3, 4 or 5, and n ranges from 12 to 18. According to the invention, by designing a novel double-oil-chain structure, the prepared emulsifier has an excellent emulsifying effect on asphalt of different types; by introducing the aromatic oleophylic chain, and using polyoxyethylene nonionic hydrophilic groups to replace partial polyamine cation hydrophilic groups, so that cation and nonionic compounding is realized, and an asphalt emulsion prepared from the emulsifier has an obvious slow-breaking property and is good in storage stability.

Description

technical field [0001] The invention relates to a preparation method and application of an asphalt emulsifier, in particular to a preparation method and application of a double oil chain, composite slow-cracking and fast-setting asphalt emulsifier. Background technique [0002] With the rapid development of my country's highway industry, road repair and maintenance issues are getting more and more attention from the government and the people, and asphalt, an important material for road repair and maintenance, has also aroused people's attention accordingly. During the use of asphalt, fluidity needs to be maintained. Traditional heating and solvent methods require a lot of energy and cause pollution. Emulsified asphalt is widely used in road repair and maintenance because of its low energy consumption and environmental protection. The key raw material for preparing emulsified asphalt is asphalt emulsifier, and asphalt emulsifier is divided into cationic, anionic and nonionic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C233/36C07C231/02C08G65/333C08J3/03C08L95/00
Inventor 王月欣李新张倩孟清张广林
Owner HEBEI UNIV OF TECH
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