Aqueous polymer solution with anti-mud or mud-resistance performances and preparation method thereof

An aqueous solution and polymer technology, applied in the field of polymer aqueous solution with mud resistance or mud resistance and its preparation, can solve the problems of fresh concrete slump or fluidity decrease, achieve novel molecular structure, improve anti-corrosion Mud or mud resistance, good mud resistance or mud resistance

Inactive Publication Date: 2013-07-10
JIANGSU OXIRANCHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is mainly aimed at the problems in the use of polycarboxylate concrete water reducer in the prior art. When the mud content of sand and gravel in the concrete mix ratio is higher than 3%, the slump or flow of freshly mixed concrete will be reduced. A water solution of a polymer with mud resistance or mud resistance and its preparation method are proposed because the water consumption of one side of the concrete needs to be increased. The water-soluble polymer has cationic properties, and the side chain of the main chain has an ester radical and cationic structure

Method used

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  • Aqueous polymer solution with anti-mud or mud-resistance performances and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Monomer A 5g (hydroxypropyl acrylate)

[0026] Monomer B 50g (methacryloyloxyethyltrimethylammonium chloride DMC, 60% aqueous solution)

[0027] Put 60 g of deionized water into a four-necked flask, blow with nitrogen three times, and heat to 50°C with an oil bath. Add monomer A, B, chain transfer agent thioglycolic acid 0.33g and 30g deionized water mixture solution (1), 2g ammonium persulfate and 30g deionized water initiator aqueous solution (2) respectively. The two liquids were added dropwise at the same time, the dropwise addition time was 4 hours, the holding time was 4 hours, and the temperature was lowered to 50°C. An aqueous polymer solution with a content of 20% was obtained. It is recorded as anti-sludging agent C-1.

Embodiment 2

[0029] Monomer A 5g (hydroxypropyl acrylate) and 5g (hydroxypropyl acrylate)

[0030] Monomer B 50g (methacryloyloxyethyltrimethylammonium chloride DMC, 60% aqueous solution)

[0031] Put 75g of deionized water into a four-neck flask, blow with nitrogen three times, and heat to 60°C with an oil bath. Add monomer A, B, chain transfer agent mercaptopropionic acid 0.33g and 35g deionized water mixture solution (1), 2g ammonium persulfate and 40g deionized water initiator aqueous solution (2) respectively. The two liquids were added dropwise at the same time, the time for dropping was 3 hours, the holding time was 3 hours, and the temperature was lowered to 30°C. An aqueous polymer solution having a content of 40% was obtained. It is recorded as anti-sludging agent C-2.

Embodiment 3

[0033] Monomer A 15g (hydroxyethyl methacrylate)

[0034] Monomer B 25g (methacryloxyethyltrimethylammonium chloride DAC, 60% aqueous solution) and 25g dimethyldiallylammonium chloride (DADMAC)

[0035] Put 80 g of deionized water into a four-necked flask, blow with nitrogen three times, and heat to 70° C. with an oil bath. Add monomer A, B, chain transfer agent mercaptopropionic acid 0.33g and 35g deionized water mixture solution (1), 2g ammonium persulfate and 45g deionized water initiator aqueous solution (2) respectively. The two liquids were added dropwise at the same time, the dropwise addition time was 5 hours, the holding time was 5 hours, and the temperature was lowered to 30°C. An aqueous polymer solution having a content of 40% was obtained. It is recorded as anti-sludging agent C-3.

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Abstract

The invention discloses an aqueous polymer solution with anti-mud or mud-resistance performances and a preparation method thereof. The technical scheme employed by the invention is relatively good in anti-mud or mud-resistance effects, and can be individually used and added, and also mixedly used with a polycarboxylate water reducer, thereby being capable of improving the anti-mud or mud-resistance performance of the polycarboxylate water reducer. The invention is characterized in that (1) the molecular structure is novel, a main chain has ester groups and cationic, the aqueous polymer solution has relatively good effect on ordinary sand and gravel materials, especially for sand and gravel materials being high in mud content, and if the aqueous polymer solution is individually used, a mixing amount of the solid is 0.01-0.22 % based on weight of all gelling materials; (2) the molecular structure has no retarder components, and different seasons do not influence a normal coagulation time of concrete; and (3) the aqueous polymer solution can be used together with the water reducer or individually used, and thus is better than similar products in markets; and the products in the markets can only be individually used, but not be mixed with the water reducer simultaneously.

Description

[0001] technical field [0002] The invention relates to a kind of clean slurry, mortar and concrete with high mud content, when the mud content of natural sand, machine-made sand or stone is more than 3% in the proportion of concrete batching materials, it can improve the flow of fresh concrete Degree, such as slump or expansion, especially relates to a method for preparing an aqueous polymer solution with mud resistance or mud resistance. Background technique [0003] Cement slurry, mortar and concrete materials are the most used modern building materials. They are widely used in various projects such as urban construction, infrastructure construction, industrial and civil construction, water conservancy engineering, military engineering, and transportation engineering in the country's economic construction. . One of the characteristics of concrete materials is compressive strength, durability and workability of fresh concrete etc. as the main design indicators. Accordin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/28C08F220/14C08F220/18C08F220/34C08F226/02C08F2/10C04B24/26C04B103/40
Inventor 朱建民董振鹏刘兆滨周立民卞荣兵
Owner JIANGSU OXIRANCHEM CO LTD
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