Organic silicon modified polycarboxylate superplasticizer and preparation method thereof
The invention relates to the technical field of water reducing agents, in particular to an organic silicon modified polycarboxylic acid water reducing agent and a preparation method thereof. The preparation method specifically comprises the following steps: step 1, carrying out ester exchange reacti...
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| creator | NIU SHIJUN GUO YANPING WU XUSHENG ZHANG DONGWEI |
| description | The invention relates to the technical field of water reducing agents, in particular to an organic silicon modified polycarboxylic acid water reducing agent and a preparation method thereof. The preparation method specifically comprises the following steps: step 1, carrying out ester exchange reaction on 2-acetamido-3-(2-naphthalene) methyl acrylate and a polyether monomer to prepare modified polyoxyethylene ether; 2, hydrogen-containing silicone oil and modified polyoxyethylene ether are subjected to a hydrosilylation reaction, organic silicon is grafted to a polyether chain, and organic silicon modified polyoxyethylene ether is prepared; and 3, carrying out polymerization reaction on the organic silicon modified polyoxyethylene ether and unsaturated acid to prepare the organic silicon modified polycarboxylate superplasticizer. The water reducing agent has excellent slump retaining performance, flowability and dispersity, so that a concrete product is more compact, and the strength of the concrete product is |
| format | Patent |
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The preparation method specifically comprises the following steps: step 1, carrying out ester exchange reaction on 2-acetamido-3-(2-naphthalene) methyl acrylate and a polyether monomer to prepare modified polyoxyethylene ether; 2, hydrogen-containing silicone oil and modified polyoxyethylene ether are subjected to a hydrosilylation reaction, organic silicon is grafted to a polyether chain, and organic silicon modified polyoxyethylene ether is prepared; and 3, carrying out polymerization reaction on the organic silicon modified polyoxyethylene ether and unsaturated acid to prepare the organic silicon modified polycarboxylate superplasticizer. 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| subjects | ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS REFRACTORIES SLAG THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF NATURAL STONE |
| title | Organic silicon modified polycarboxylate superplasticizer and preparation method thereof |
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