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Functional polycarboxylate superplasticizer mother liquor and preparation method thereof

A type of polycarboxylate and superplasticizer technology, applied in the field of functional polycarboxylate superplasticizer mother liquor and its preparation, can solve the problems of poor cement adaptability, bleeding and segregation, easy hardening and bleeding, etc., and achieve easy pumping Delivery, no environmental pollution, easy pouring and compact effect

Active Publication Date: 2014-04-16
JILIN KANGHUA CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of construction technology, although the traditional naphthalene-based and melamine-based high-efficiency water-reducing agents are mature in technology, due to their low water-reducing rate, rapid collapse, and poor adaptability to cement, etc., they are not suitable for high-performance concrete. There are many deficiencies; the polycarboxylate high-performance water reducer is incompatible with many admixture components, it is easy to harden and bleed in the application of medium and low grade concrete, and its application is greatly restricted; while the sulfamic acid high-efficiency water reducer Although the water agent has the advantages of high water reducing rate, small slump loss over time and can be compounded with most admixtures, it also has defects such as serious bleeding and segregation and high market price, which also limits its application.

Method used

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  • Functional polycarboxylate superplasticizer mother liquor and preparation method thereof
  • Functional polycarboxylate superplasticizer mother liquor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: Add 3420 kilograms of methyl butenol polyoxyethylene ether, 1710 kilograms of deionized water and 51 kilograms of sodium p-aminobenzenesulfonate in the reaction kettle, and the reaction kettle is heated up from normal temperature to 50 ° C, and add 16 kilograms of 30% hydrogen peroxide as the initiator, after stirring for 5 minutes, carry out subsequent dropwise addition reaction, the addition amount of sodium methacryl sulfonate is 23 kilograms, continue to heat up to 75-80 ℃, begin to dropwise add B1 solution and Solution A, added dropwise for one hour at a constant speed, solution B1 is a mixed solution of 101 kilograms of acrylic acid and 59 kilograms of deionized water, solution A is a mixed solution of 4.68 kilograms of vitamin C, 15.1 kilograms of thioglycolic acid and 88 kilograms of deionized water , then add B2 solution dropwise, B2 solution is added dropwise at a constant speed for 0.5 hours, B2 solution is a mixed solution of 198 kg of acrylic a...

Embodiment 2

[0023] Embodiment 2: Add 3600 kilograms of methyl butenol polyoxyethylene ether, 1800 kilograms of deionized water and 54 kilograms of sodium p-aminobenzenesulfonate in the reaction kettle, and the reaction kettle is heated up from normal temperature to 50 ° C, adding 18 kilograms of 30% hydrogen peroxide as the initiator, after stirring for 5 minutes, carry out the follow-up dropwise reaction, the addition of sodium methacrylene sulfonate is 25 kilograms, continue to heat up to 75-80 ° C, start to drop B1 solution and A solution, dropwise for one hour at a constant speed, B1 solution is a mixed solution of 100 kilograms of acrylic acid and 60 kilograms of deionized water, A solution is 4.86 kilograms of vitamin C, 15 kilograms of thioglycolic acid and 90 kilograms of deionized water, and then drip Add B2 solution, add B2 solution dropwise at a constant speed for 0.5 hours, B2 solution is a mixed solution of 200 kg of acrylic acid and 121 kg of deionized water, keep warm for on...

Embodiment 3

[0024] Example 3: 3780 kg of methyl butenol polyoxyethylene ether, 1890 kg of deionized water and 56.7 kg of sodium p-aminobenzenesulfonate were added to the reaction kettle, and the reaction kettle was heated from normal temperature to 50 ° C, and added as a trigger Add 20 kg of 30% hydrogen peroxide, stir for 5 minutes and then carry out the subsequent dropwise addition reaction. The amount of sodium methacrylate sulfonate added is 27 kg, continue to heat up to 75-80 ° C, and start to drop B1 solution and A solution at the same time , dropwise at a constant speed for one hour, the B1 solution is a mixed solution of 99 kilograms of acrylic acid and 61 kilograms of deionized water, the A solution is a mixed solution of 5.04 kilograms of vitamin C, 14.8 kilograms of thioglycolic acid and 92 kilograms of deionized water, and then Add B2 solution dropwise, add B2 solution dropwise at a constant speed for 0.5 hours, B2 solution is a mixed solution of 202 kg of acrylic acid and 122 ...

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Abstract

The invention relates to a functional polycarboxylate superplasticizer mother liquor used for manufacturing concrete. The mother liquor is characterized in that the mother liquor is prepared from the raw materials of, by weight: 190-210 parts of methylbutyl alcohol polyoxyethylene ether, 95-105 parts of deionized water, 2.9-3.1 parts of p-aminobenzene sodium sulfonate, 0.9-1.1 parts of an initiator of 30% Hydrogen peroxide, 1.3-1.5 parts of sodium sulfonate methacrylate, 8.8-9 parts of a B1 solution, 5.98-6.22 parts of an A solution, and 17.6-18 parts of a B2 solution. On a basis that the mother liquor can provide relatively high water reduction rate of high-performance superplasticizer, excellent slump resistance and good cohesiveness, wide adaptability and durability are added. The method is scientific and reasonable. The process flow is easy to control. The operation is simple. With the method, environment pollution is prevented, and environment protection is facilitated.

Description

technical field [0001] The invention relates to an organic polymer chemical raw material, in particular to a functional polycarboxylate water reducer mother liquor suitable for making concrete and a preparation method thereof. Background technique [0002] With the rapid development of construction technology, although the traditional naphthalene-based and melamine-based high-efficiency water-reducing agents are mature in technology, due to their low water-reducing rate, rapid collapse, and poor adaptability to cement, they are not suitable for high-performance concrete. There are many deficiencies; the polycarboxylate high-performance water reducer is incompatible with many admixture components, and it is easy to harden and bleed in the application of medium and low grade concrete, and its application is greatly restricted; while the sulfamic acid high-efficiency water reducer Although the water agent has the advantages of high water reducing rate, small slump loss over tim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/20C08F283/06C04B103/30
Inventor 赵长海陈刚
Owner JILIN KANGHUA CHEM CO LTD