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Research on synthetic condition of lignosulfonate modified polycarboxylate superplasticizer
The invention relates to a research on a synthetic condition of a lignosulfonate modified polycarboxylate superplasticizer. The research on the synthetic condition of the lignosulfonate modified polycarboxylate superplasticizer is characterized by being prepared by performing condensation on lignosulfonate, polyethylene glycol monomethyl ether metacrylic acid ester, acrylic acid and methacrylic acid sodium sulfonate in a ratio of (9-15 percent): (1-5 percent): (5-30 percent): (1-5 percent). An operation method comprises the following steps: mixing lignosulfonate, polyethylene glycol monomethyl ether metacrylic acid ester, acrylic acid and methacrylic acid sodium sulfonate in the ratio to prepare an aqueous solution with certain mass percentage (the mass percentage of water is 70-90 percent); preparing a diacetyl peroxide initiator into an aqueous solution and slowly dropwise adding the two solutions into a three-mouth flask by using a constant pressure dropping funnel; performing reaction for 2-10 hours at the temperature of 60-120 DEG C after the dropping is completed; cooling the system to be at room temperature after the reaction is completed, and regulating pH of the system to be 8-12 by using a sodium hydroxide solution to obtain the lignosulfonate modified polycarboxylate superplasticizer.
Research on synthetic condition of lignosulfonate modified polycarboxylate superplasticizer
The invention relates to a research on a synthetic condition of a lignosulfonate modified polycarboxylate superplasticizer. The research on the synthetic condition of the lignosulfonate modified polycarboxylate superplasticizer is characterized by being prepared by performing condensation on lignosulfonate, polyethylene glycol monomethyl ether metacrylic acid ester, acrylic acid and methacrylic acid sodium sulfonate in a ratio of (9-15 percent): (1-5 percent): (5-30 percent): (1-5 percent). An operation method comprises the following steps: mixing lignosulfonate, polyethylene glycol monomethyl ether metacrylic acid ester, acrylic acid and methacrylic acid sodium sulfonate in the ratio to prepare an aqueous solution with certain mass percentage (the mass percentage of water is 70-90 percent); preparing a diacetyl peroxide initiator into an aqueous solution and slowly dropwise adding the two solutions into a three-mouth flask by using a constant pressure dropping funnel; performing reaction for 2-10 hours at the temperature of 60-120 DEG C after the dropping is completed; cooling the system to be at room temperature after the reaction is completed, and regulating pH of the system to be 8-12 by using a sodium hydroxide solution to obtain the lignosulfonate modified polycarboxylate superplasticizer.
Research on synthetic condition of lignosulfonate modified polycarboxylate superplasticizer
ZHOU XIANGYONG (Autor:in) / XU HUAQIANG (Autor:in)
03.06.2015
Patent
Elektronische Ressource
Englisch
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2015
| Europäisches Patentamt | 2023