Solvent-free low-temperature ball-milling preparation method of solid polycarboxylic slump retaining agent
The invention relates to a solvent-free low-temperature ball-milling preparation method of a solid polycarboxylic slump retaining agent, which comprises the following steps: adding molten ethylene glycol vinyl polyoxyethylene ether, unsaturated carboxylic acid, acrylate, unsaturated amide and a chai...
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| creator | ZHU YERAN WEN JINBAO DU ZHIQIN TANG XIUSHENG LU JIAN CHEN GUOXIN |
| description | The invention relates to a solvent-free low-temperature ball-milling preparation method of a solid polycarboxylic slump retaining agent, which comprises the following steps: adding molten ethylene glycol vinyl polyoxyethylene ether, unsaturated carboxylic acid, acrylate, unsaturated amide and a chain transfer agent into a ball mill, closing a cover, opening an initiator feed valve, and adding halfof an initiator; opening a jacket chilled water valve of the ball mill while starting the ball mill for ball milling, and controlling the temperature to be 60+/-2 DEG C; adding the rest half of the initiator when ball milling is carried out for half of time, controlling the ball milling time to be 5-15 min, and after ball milling is finished, conveying a finished product to a cryogenic crusher through a discharging valve to crush and discharge the finished product. A solvent-free low-temperature ball milling method is adopted for bulk synthesis, the solid polycarboxylic acid slump retaining agent with the solid conte |
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| language | chi ; eng |
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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 METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS REFRACTORIES SLAG THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF NATURAL STONE |
| title | Solvent-free low-temperature ball-milling preparation method of solid polycarboxylic slump retaining agent |
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