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Preparation method and application of anti-soil polymer

A polymer and soil technology, applied in the field of polymer preparation

Inactive Publication Date: 2016-03-16
JIANGSU SOBUTE NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no good solution to the problem of clay adaptability. The properties of concrete can only be improved by compounding some small molecules such as sodium gluconate, sucrose, citric acid, potassium salt, etc., which cannot fundamentally solve the problem of polycarboxylate reduction. Adaptability of water agent in areas with high mud content

Method used

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  • Preparation method and application of anti-soil polymer
  • Preparation method and application of anti-soil polymer
  • Preparation method and application of anti-soil polymer

Examples

Experimental program
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preparation example Construction

[0066] The preparation method of monomer Ar-P-3 is: take 16.6g (0.1mol) of 3-phenoxypropionic acid and place it in a 250ml three-necked flask, add 43.94g (0.32mol) of phosphorus trichloride within 30min, and heat up to React at 75°C for 12 hours, then add 101.1 g (5.6 mol) of water, and heat up to 105°C for hydrolysis for 1 hour. The reaction was cooled to room temperature. The water in the reaction was distilled off under reduced pressure, and then the crude reaction product was washed three times with cold methanol, and the remaining methanol was vacuumed off to obtain the final target product with a reaction yield of 75%. Other similar structures can be carried out in this way.

[0067]The preparation method of the monomer Ar-P-5 is as follows: take 16.8g (0.1mol) of 3-phenoxy-1,2-propanediol in a 250ml three-necked flask, add 25.36g (0.22mol, 80%wt) of phosphoric acid, Add 30ml of toluene, stir evenly, put a water separator on the three-necked bottle, raise the temperatu...

Embodiment 1

[0070] In this embodiment, A / B=1:2, C / (A+B)=1.0.

[0071] In a 1000ml four-neck flask equipped with electric mechanical stirring and constant temperature heating oil bath, add 250g (0.25mol) of p-methylphenoxy polyethylene glycol M1 (Mw=1000) whose structural formula is shown below, phosphoric acid monomer Ar-P-116 2.5g (0.50mol), water 45g (2.5mol), sulfuric acid 12.5g (0.125mol), heated and stirred until it was a homogeneous phase. Subsequently, 60.75 g (0.75 mol) of 37% formaldehyde aqueous solution was slowly added dropwise. After completion of the dropwise addition, the reaction was carried out at 100° C. for 5 hours. After the reaction, dilute with 30% lye to a pH of about 10, and continue the reaction at 105°C for 0.5-1 hour to remove unreacted formaldehyde. The reaction was cooled to room temperature and diluted with water to about 30%-40%.

[0072]

Embodiment 2

[0074] In this embodiment, A / B=1:2, C / (A+B)=1.0.

[0075] In a 1000ml four-neck flask equipped with electric mechanical stirring and constant temperature heating oil bath, add p-methylphenoxypolyethylene glycol (Mw=2000) 500g (0.25mol), phosphoric acid monomer Ar-P-1162.5g (0.50mol), water 45g (2.5mol), sulfuric acid 12.5g (0.125mol), heated and stirred until it was a homogeneous phase. Subsequently, 60.75 g (0.75 mol) of 37% formaldehyde aqueous solution was slowly added dropwise. After completion of the dropwise addition, the reaction was carried out at 100° C. for 5 hours. After the reaction, dilute with 30% lye to a pH of about 10, and continue the reaction at 105°C for 0.5-1 hour to remove unreacted formaldehyde. The reaction was cooled to room temperature and diluted with water to about 30%-40%.

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Abstract

The invention provides a preparation method and application of an anti-soil polymer. The prepared polymer is used as a dispersant for a hydraulic cementing agent and / or an aqueous dispersion for potential hydraulic cementing agent and has good anti-soil performance. The preparation method the anti-soil polymer comprises a step of subjecting polyether macromonomer A with a special structure, monomer B containing a phosphoric acid or phosphorous acid group, optional monomer D and aldehyde C to condensation polymerization so as to prepare the anti-soil polymer, wherein the monomer D is selected from the group consisting of phenol, aniline, p- / o-aminobezene solfonic acid, p- / o-hydroxybenzoic acid, p- / o-aminobenzoic acid, p- / o-hydroxyezene solfonic acid, p- / o-toluidine and p- / o-methylphenol, a mol ratio of the polyether macromonomer A to the monomer B to the monomer D is 1: (0.5-12): (0-8.0), and a mol ratio of the polyether macromonomer A to the monomer B and the monomer D is 1: (0.5-12.0).

Description

technical field [0001] The invention relates to a polymer preparation method and its application, belonging to the technical field of concrete admixtures. Background technique [0002] With the rapid development of my country's economic construction, the use of concrete is increasing at a rate of more than ten percent per year. At the same time, the level of concrete application technology is also developing. Among the numerous concrete admixtures, the water reducer is currently the most widely studied and used admixture. Water reducing agent is essentially a surfactant, which mainly improves the fluidity of concrete, controls the setting or hardening time, and improves the strength of concrete. [0003] Polycarboxylate superplasticizer is a high-performance superplasticizer, its molecular structure is mainly composed of polyether macromonomer and unsaturated carboxylic acid molecules through free radical polymerization. Carboxylic acid functional groups can produce electr...

Claims

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Application Information

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IPC IPC(8): C08G65/335C08G65/331C08G65/334C08G65/332C04B24/32C04B103/30
CPCC08G65/3317C04B24/32C04B2103/302C08G65/331C08G65/3322C08G65/3344C08G65/3353C08G65/3355C08G65/3356
Inventor 冉千平马建峰宋峰岩王涛亓帅杨勇范士敏
Owner JIANGSU SOBUTE NEW MATERIALS
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