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Polycarboxylic acid series concrete composite water-proof agent and its preparing method

A polycarboxylate-based concrete technology, which is applied in the field of polycarboxylate-based concrete composite waterproofing agent and its preparation, can solve the problems of dry shrinkage cracking, high total alkali, and difficulty in pumping, etc., and achieve the reduction of concrete capillary cracks and increase Compressive strength, effect of increasing compactness

Inactive Publication Date: 2007-08-29
郭震
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They all have disadvantages such as large dosage, difficult maintenance, high total alkali, poor adaptability, and limited functions to varying degrees.
After use, the concrete will have different degrees of plugging, difficulty in pumping, difficulty in controlling the setting time, shrinkage, cracking and leakage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Raw material ratio (W%): polyethylene glycol monomethyl ether 10; methacrylic acid 2.5; p-toluenesulfonic acid 0.3; hydroquinone 0.1; ammonium persulfate 0.2; ; Sodium alkylsulfonate 0.4; Deionized water 44.5; Tap water 35;

[0014] Its preparation method is: 1. Esterification and batching: Add polyethylene glycol monomethyl ether, methacrylic acid, p-toluenesulfonic acid and hydroquinone into the reaction kettle, heat up to 80-140°C and react for 4-6 hours , cooling down to about 60°C. Add sodium methacrylate and deionized water according to the ingredients requirements to make a monomer mixture; 2. Polymerization and neutralization: add specified deionized water into the polymerization kettle, raise the temperature to 65-95°C, and continuously The monomer mixture and the initiator aqueous solution are respectively added into the tank to carry out the polymerization reaction. After termination, cool to 55°C and add lye to neutralize to a pH value of 6.5 to 8.0; 3. Co...

example 2

[0016] Raw material ratio (W%): polyethylene glycol monomethyl ether 10; maleic anhydride 2; p-toluenesulfonic acid 0.3; hydroquinone 0.1; allyl sodium sulfonate 1.4; ammonium persulfate 0.2; calcium gluconate 4.5; OP-10 0.5; soft water 44; tap water 37;

[0017] The preparation method is: 1. Esterification and batching: add polyethylene glycol monomethyl ether, maleic anhydride, p-toluenesulfonic acid and hydroquinone to the reaction kettle, heat up to 80-140°C and react for 4-6 hours , cooling down to about 60°C. Add allyl sodium sulfonate and deionized water according to the ingredients requirements to make a monomer mixture; 2. Polymerization and neutralization: add specified deionized water into the polymerization kettle, raise the temperature to 65-95°C, and continuously The monomer mixture and the initiator aqueous solution are respectively added into the tank to carry out the polymerization reaction. After termination, cool to 55°C and add lye to neutralize to a pH v...

example 3

[0019] Raw material ratio (W%): polyethylene glycol monomethyl ether 11; methacrylic acid 1.4; p-toluenesulfonic acid 0.3; hydroquinone 0.1; 2-acrylamide 2-methylpropanesulfonic acid 1.0; persulfuric acid Ammonium 0.2; Sodium citrate 3.1; Plant saponins 0.5; Soft water 46.4; Tap water 36;

[0020] The preparation method is: 1. Esterification and batching: add polyethylene glycol monomethyl ether, methacrylic acid, p-toluenesulfonic acid and hydroquinone to the reaction kettle, heat up at 80-140°C for 4-6 hours, Cool down to about 60°C. Add 2-acrylamido 2-methylpropanesulfonic acid and deionized water according to the ingredients requirements to make a monomer mixture; 2. Polymerization and neutralization: add the specified deionized water into the polymerization kettle and heat up to 65~ At 95°C, the monomer mixture and the initiator aqueous solution were continuously added from the elevated tank to carry out polymerization. After termination, cool to 55°C and add lye to neu...

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Abstract

The invention relates to a manufacture method for polyocarboxy acid series concrete compound water proof agent that includes polyocarboxy acid water reducing agent 20-80 portions, multihydroxyl carboxyl compounds 1-10 portions, air entraining agent 0.1-1.0 portions. The advantages of the invention are that: it decreases self contraction and dry contraction inner concrete, increasing degree of compaction, decreasing concrete capillary fissure, achieving the ability of water proof and anti-leaking function; the anti-leaking grade is over the other water proof agent; it has slushing pumping, water poof, and constration anticracking function; and has high quality and low price.

Description

technical field [0001] The invention relates to a waterproofing agent and a preparation method thereof, in particular to a polycarboxylate concrete composite waterproofing agent and a preparation method thereof. Background technique [0002] The traditional waterproofing of concrete rigid materials is mainly based on expansion agents based on inorganic materials, and composite waterproofing agents composed of organic and inorganic substances. They all have disadvantages such as large dosage, difficult maintenance, high total alkali content, poor adaptability, and limited functions to varying degrees. After use, the concrete will have different degrees of plugging, difficulty in pumping, difficulty in controlling the setting time, shrinkage cracking and leakage. Contents of the invention [0003] The purpose of the present invention is to provide a polycarboxylate composite waterproofing agent, which is much better than traditional metal chloride waterproofing agents, inor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/28C04B24/18C04B24/16C04B24/04C04B24/02
Inventor 郭震孙日圣郭飚胡秀生付平汉
Owner 郭震
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