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A kind of quaternary ammonium salt type sodium hydroxypropyl phosphate quick-cracking asphalt emulsifier and its preparation method

A technology of hydroxypropyl phosphate and asphalt emulsifier, which is applied in chemical instruments and methods, phosphorus organic compounds, organic chemistry, etc., can solve the problems of high requirements for production and experimental equipment, high cost of emulsifier raw materials, high temperature reaction, etc., and achieve Various performance indicators are excellent, good aggregate adhesion and storage stability, and the effect of cheap raw materials

Inactive Publication Date: 2019-08-13
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The general disadvantages of the above-mentioned amphoteric asphalt emulsifiers and their preparation methods are: the cost of raw materials for the preparation of emulsifiers is high, the source is limited, high temperature reactions are required during preparation, and the requirements for production and experimental equipment are relatively high

Method used

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  • A kind of quaternary ammonium salt type sodium hydroxypropyl phosphate quick-cracking asphalt emulsifier and its preparation method
  • A kind of quaternary ammonium salt type sodium hydroxypropyl phosphate quick-cracking asphalt emulsifier and its preparation method
  • A kind of quaternary ammonium salt type sodium hydroxypropyl phosphate quick-cracking asphalt emulsifier and its preparation method

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preparation example Construction

[0049] For above asphalt emulsifier, the present invention also provides its preparation method, comprises the following steps:

[0050] (1) Dissolve sodium dihydrogen phosphate in water, heat to a certain temperature, then gradually add epichlorohydrin, and mix and react to obtain reaction intermediate I, which is 3-chloro-2-hydroxypropyl phosphate sodium

[0051]

[0052] (2) Mix octadecyl dimethyl tertiary amine and alcohol solvent, then add reaction intermediate I, mix and react, promptly obtain quaternary ammonium salt type hydroxypropyl phosphate sodium fast-cracking asphalt emulsifier;

[0053] Or, include the following steps:

[0054](1) Dissolve trisodium phosphate in water, heat to a certain temperature, then gradually add epichlorohydrin, mix and react to obtain reaction intermediate II, and reaction intermediate II is sodium glycidyl phosphate

[0055]

[0056] (2) Mix octadecyl dimethyl tertiary amine and alcohol solvent, then add the reaction intermediate...

Embodiment 1

[0078] (1) Preparation of quaternary ammonium salt type sodium hydroxypropyl phosphate quick-cracking asphalt emulsifier:

[0079] 1) Add 245.7g sodium dihydrogen phosphate (NaH 2 PO 4 2H 2 O) and 483g of water, stirred and dissolved, heated to 85°C. Then 97.1 g of epichlorohydrin was added dropwise, and stirred at 85° C. for 7.5 h to obtain an aqueous solution of 3-chloro-2-hydroxypropyl phosphate sodium.

[0080] The above synthetic intermediate product was separated and purified by recrystallization and then detected by FTIR. The results are as follows: 3445cm -1 It is the stretching vibration absorption peak of O-H, 1635cm -1 C-O asymmetric stretching vibration absorption peak, 1297cm -1 It is the stretching vibration absorption peak of P=O, 1093cm -1 It is the stretching vibration absorption peak of P-O-R, 921cm -1 P-OH vibration absorption peak, 665cm -1 C-Cl bending vibration absorption peak, 538cm -1 It is the O-H out-of-plane bending vibration absorption peak...

Embodiment 2

[0091] (1) Preparation of quaternary ammonium salt type sodium hydroxypropyl phosphate quick-cracking asphalt emulsifier:

[0092] 1) Add 518.9g trisodium phosphate (Na 3 PO 4 12H 2 O) and 672g of water, stirred and dissolved, heated to 42°C. Then 97.1 g of epichlorohydrin was added dropwise, and stirred at 42° C. for 5 h to obtain an aqueous solution of sodium glycidyl phosphate.

[0093] The above-mentioned intermediate product synthesized was separated and purified by recrystallization and then detected by FTIR. The results are as follows: 3015cm -1 It is the absorption peak of epoxy group C-H stretching vibration, 1673cm -1 C-O asymmetric stretching vibration absorption peak, 1443cm -1 is the asymmetric bending vibration of methylene, 1360cm -1 It is the stretching vibration absorption peak of P=O, 1023cm -1 It is the stretching vibration absorption peak of P-O-R, 933cm -1 It is the vibration absorption peak of the epoxy group, 736cm -1 is the C-H out-of-plane ben...

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Abstract

The invention discloses a quaternary ammonium hydroxypropyl sodium phosphate quick breaking asphalt emulsifier and a preparation method thereof. The asphalt emulsifier is prepared from the following raw materials according to molar ratio: octadeyl dimethyl tertiary amine, an alcohol solvent, epoxy chloropropane and sodium dihydrogen phosphate with the molar ratio of 1mol to (4.00-9.00)mol to (1.00-1.15)mol to (1.50-1.73)mol, or octadeyl dimethyl tertiary amine, an alcohol solvent, epoxy chloropropane, rtiary sodium phosphate and hydrochloric acid with the molar ratio of 1mol to 4.00-9.00)mol to (1.00-1.15)mol to (1.30-1.50)mol to (1.40-1.61)mol. The alcohol solvent adopts ethanol, methanol or isopropanol. The asphalt emulsifier has the advantages that the raw materials are available, the production cost is low, the technology is simple, and high-temperature reaction is not required, various different models of asphalt can be emulsified, formed emulsified asphalt is fine and uniform, the storage stability is good, and cationic emulsified asphalt can be prepared.

Description

technical field [0001] The invention relates to a quaternary ammonium salt-type sodium hydroxypropyl phosphate fast-cracking asphalt emulsifier and a preparation method thereof, belonging to the technical field of fine chemicals. Background technique [0002] In road engineering, emulsified asphalt is suitable for asphalt pavement surface treatment, normal temperature asphalt mixture, as well as permeable layer, adhesive layer and sealing layer. It has the advantages of saving energy, prolonging the construction season, improving efficiency, improving construction conditions, and reducing environmental pollution. Asphalt emulsifiers are surfactants that can emulsify asphalt. There are many classification methods for asphalt emulsifiers. According to the type of ions, they mainly include anionic, cationic, nonionic and amphoteric. The amphoteric types are mainly betaine compounds, imidazoline compounds and amino acid compounds. [0003] However, the development of amphoteric...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F9/09C08J3/03C08L95/00
CPCC07F9/091C08J3/03C08J2395/00
Inventor 施来顺巩雪笛于小梦马存飞
Owner SHANDONG UNIV
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