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Polyphosphonic acid type water reducing agents and synthesis method thereof

A synthesis method and water reducing agent technology are applied in the field of polyphosphonic acid water reducing agent and its synthesis, which can solve the problems of poor workability, high sensitivity, poor compatibility of different materials, etc., and achieve good water reducing effect. , Good slump retention effect

Active Publication Date: 2015-12-16
吉林众鑫化工集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with other types of water reducers, polycarboxylate water reducers currently on the market have higher water reduction rate and slump retention, but at the same time, they are also too sensitive, poor compatibility with different materials, and poor workability series of questions

Method used

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  • Polyphosphonic acid type water reducing agents and synthesis method thereof
  • Polyphosphonic acid type water reducing agents and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The raw material composition of polyphosphonic acid water reducer:

[0023] a. Methallyl polyoxyethylene ether

[0024] b. Acrylic

[0025] c. Vinylphosphonic acid

[0026] d. Ammonium persulfate

[0027] e. Thioglycolic acid

[0028] f. Trisodium phosphate;

[0029] Among them, the molar ratio of raw materials a, b, c, f: 1:3:0.2:2; raw material d is 0.2% of the total weight of the material; raw material e is 0.1% of the total weight of the material.

[0030] Its synthesis method is:

[0031] 1) Add b, c, and f together into water, mix and stir evenly to form a solution with a total content of 50%, then add e and stir evenly as dripping material A;

[0032] 2) Dissolve d in water to make a 10% solution as dripping material B;

[0033] 3) Add a into the reaction kettle filled with water, stir until it is completely dissolved, and make a 50% solution; raise the temperature of the reaction kettle to 60°C and start adding material A dropwise evenly, and finish addin...

Embodiment 2

[0036] The raw material composition of polyphosphonic acid water reducer:

[0037] a. Methallyl polyoxyethylene ether

[0038] b. Methacrylic acid

[0039] c. Vinylphosphonic acid

[0040] d. Ammonium persulfate

[0041] e. Mercaptopropionic acid

[0042] f. Trisodium phosphate;

[0043] Among them, the molar ratio of raw materials a, b, c, f is 1:4:1:3; raw material d is 0.5% of the total weight of the material; raw material e is 0.3% of the total weight of the material.

[0044] Its synthetic method is as embodiment 1.

Embodiment 3

[0046] The raw material composition of polyphosphonic acid water reducer:

[0047] a. Methallyl polyoxyethylene ether

[0048] b. Acrylic

[0049] c. Vinylphosphonic acid

[0050] d. Ammonium persulfate

[0051] e. Thioglycolic acid

[0052] f. Trisodium phosphate;

[0053] Among them, the molar ratio of raw materials a, b, c, f is 1:3.5:0.5:3; raw material d is 0.25% of the total weight of the material; raw material e is 0.18% of the total weight of the material.

[0054] Its synthetic method is as embodiment 1.

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Abstract

The invention discloses polyphosphonic acid type water reducing agents. The polyphosphonic acid type water reducing agents are prepared from raw materials as follows: a, methyl allyl polyethenoxy ether; b, acrylic acid or methylacrylic acid; c, vinylphosphonic acid; d, ammonium persulfate; e, mercaptoacetic acid or mercaptopropionic acid; f, trisodium phosphate. The mole ratio of a to b to c to f is 1:(3-4):(0.2-1):(2-3); the material d accounts for 0.2%-0.5% of the total weight of all the materials; the material e accounts for 0.1%-0.3% of the total weight of all the materials. Besides, the invention further discloses a synthesis method of the polyphosphonic acid type water reducing agents. Compared with common polycarboxylate superplasticizers, the phosphonic acid and carboxylic acid copolymerized water reducing agent has a better water reducing effect and a slump keeping effect and has a certain delayed coagulation function on concrete.

Description

technical field [0001] The invention relates to a water reducer, in particular to a polyphosphonic acid water reducer and a synthesis method thereof. Background technique [0002] With the rapid development of China's national economy and the successive release of national industrial policies, it has greatly promoted the development of concrete admixture technology. Modern concrete is developing in the direction of high performance and greenness, and the requirements for water reducing rate, slump retention and environmental protection of concrete admixtures are getting higher and higher. Concrete water reducer is to reduce the amount of cement and improve the utilization rate of industrial waste residue, and its role is finally reflected in its huge economic and social benefits. The high-efficiency water reducers developed and produced in China and widely used are mainly classified according to their chemical components as follows: modified lignosulfonate high-efficiency w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/26C08F283/06C08F220/06C08F230/02C08F2/38C04B103/30
Inventor 郑建波崔庆龙贾洪文金冠男邹灵俊孟宪宏孙东日
Owner 吉林众鑫化工集团有限公司
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