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Epoxypropane embedded polyether modified concrete thickening agent and preparation method thereof
The invention discloses an epoxypropane embedded polyether modified concrete thickening agent and a preparation method thereof. The preparation method comprises the following steps: stirring and dissolving epoxypropane embedded polyether, heating, adding an oxidant, stirring, dripping a mixture of acrylamide and hydroxyethyl acrylate while dripping a mixture of a reducing agent and a chain transfer agent, further stirring after the dripping operation is completed, regulating the pH value, adding a proper amount of deionized water, thereby obtaining the thickening agent. According to the prepared thickening agent, 0.1 percent of the thickening agent is added into concrete, and when the water amount for unit volume concrete is increased by 10kg, the concrete is not subjected to dissociation and seepage, and the dissociation and seepage resistance of the concrete can be obviously improved. When 2-10 percent of the product disclosed by the invention is added into a commercial polycarboxylate superplasticizer, the concrete workability can be obviously improved, the water-retaining property of the concrete is improved, and the problems such as dissociation, seepage and concrete encasing property are solved.
Epoxypropane embedded polyether modified concrete thickening agent and preparation method thereof
The invention discloses an epoxypropane embedded polyether modified concrete thickening agent and a preparation method thereof. The preparation method comprises the following steps: stirring and dissolving epoxypropane embedded polyether, heating, adding an oxidant, stirring, dripping a mixture of acrylamide and hydroxyethyl acrylate while dripping a mixture of a reducing agent and a chain transfer agent, further stirring after the dripping operation is completed, regulating the pH value, adding a proper amount of deionized water, thereby obtaining the thickening agent. According to the prepared thickening agent, 0.1 percent of the thickening agent is added into concrete, and when the water amount for unit volume concrete is increased by 10kg, the concrete is not subjected to dissociation and seepage, and the dissociation and seepage resistance of the concrete can be obviously improved. When 2-10 percent of the product disclosed by the invention is added into a commercial polycarboxylate superplasticizer, the concrete workability can be obviously improved, the water-retaining property of the concrete is improved, and the problems such as dissociation, seepage and concrete encasing property are solved.
Epoxypropane embedded polyether modified concrete thickening agent and preparation method thereof
TAN HONGBO (author) / LI XIN (author) / MA BAOGUO (author) / QI CHANGYA (author) / LIN CHAOLIANG (author) / ZHANG BINGLIU (author) / LI XIANGGUO (author) / JIAN SHOUWEI (author) / HUANG JIAN (author)
2015-04-29
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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