Method for preparing organic improved bentonite on basis of seepage prevention
The invention discloses a method for preparing organic improved bentonite on the basis of seepage prevention. The method includes steps of 1), dispersing sodium carbonate, N-N' methylene bisacrylamideand bentonite in water to obtain slurry and stirring the slurry for 10 min; 2), adding acrylic...
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| creator | CAI XIAOQING LIAO RAOPING YU CHUANG MA JIANJUN YU XIAONIU WANG HUI |
| description | The invention discloses a method for preparing organic improved bentonite on the basis of seepage prevention. The method includes steps of 1), dispersing sodium carbonate, N-N' methylene bisacrylamideand bentonite in water to obtain slurry and stirring the slurry for 10 min; 2), adding acrylic acid into the slurry and stirring the acrylic acid and the slurry for 20 min to obtain first mixtures; 3), placing the first mixtures in constant-temperature water bath, adding potassium persulfate into the constant-temperature water bath and stirring the first mixtures and the potassium persulfate for5 min to obtain second mixtures; 4), polymerizing the second mixtures at the constant temperatures for 2 h to fetch slurry, repeatedly washing and centrifuging the slurry and then drying the slurry toobtain the organic improved bentonite. The method has the advantages that the organic improved bentonite prepared by the aid of the method is obviously improved in the aspects of expansion indexes and seepage prevention perfor |
| format | Patent |
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The method includes steps of 1), dispersing sodium carbonate, N-N' methylene bisacrylamideand bentonite in water to obtain slurry and stirring the slurry for 10 min; 2), adding acrylic acid into the slurry and stirring the acrylic acid and the slurry for 20 min to obtain first mixtures; 3), placing the first mixtures in constant-temperature water bath, adding potassium persulfate into the constant-temperature water bath and stirring the first mixtures and the potassium persulfate for5 min to obtain second mixtures; 4), polymerizing the second mixtures at the constant temperatures for 2 h to fetch slurry, repeatedly washing and centrifuging the slurry and then drying the slurry toobtain the organic improved bentonite. The method has the advantages that the organic improved bentonite prepared by the aid of the method is obviously improved in the aspects of expansion indexes and seepage prevention perfor</description><language>chi ; eng</language><subject>CHEMISTRY ; COMPOSITIONS BASED THEREON ; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS ; METALLURGY ; ORGANIC MACROMOLECULAR COMPOUNDS ; THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><creationdate>2018</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20180309&DB=EPODOC&CC=CN&NR=107778423A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20180309&DB=EPODOC&CC=CN&NR=107778423A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>CAI XIAOQING</creatorcontrib><creatorcontrib>LIAO RAOPING</creatorcontrib><creatorcontrib>YU CHUANG</creatorcontrib><creatorcontrib>MA JIANJUN</creatorcontrib><creatorcontrib>YU XIAONIU</creatorcontrib><creatorcontrib>WANG HUI</creatorcontrib><title>Method for preparing organic improved bentonite on basis of seepage prevention</title><description>The invention discloses a method for preparing organic improved bentonite on the basis of seepage prevention. The method includes steps of 1), dispersing sodium carbonate, N-N' methylene bisacrylamideand bentonite in water to obtain slurry and stirring the slurry for 10 min; 2), adding acrylic acid into the slurry and stirring the acrylic acid and the slurry for 20 min to obtain first mixtures; 3), placing the first mixtures in constant-temperature water bath, adding potassium persulfate into the constant-temperature water bath and stirring the first mixtures and the potassium persulfate for5 min to obtain second mixtures; 4), polymerizing the second mixtures at the constant temperatures for 2 h to fetch slurry, repeatedly washing and centrifuging the slurry and then drying the slurry toobtain the organic improved bentonite. 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The method includes steps of 1), dispersing sodium carbonate, N-N' methylene bisacrylamideand bentonite in water to obtain slurry and stirring the slurry for 10 min; 2), adding acrylic acid into the slurry and stirring the acrylic acid and the slurry for 20 min to obtain first mixtures; 3), placing the first mixtures in constant-temperature water bath, adding potassium persulfate into the constant-temperature water bath and stirring the first mixtures and the potassium persulfate for5 min to obtain second mixtures; 4), polymerizing the second mixtures at the constant temperatures for 2 h to fetch slurry, repeatedly washing and centrifuging the slurry and then drying the slurry toobtain the organic improved bentonite. The method has the advantages that the organic improved bentonite prepared by the aid of the method is obviously improved in the aspects of expansion indexes and seepage prevention perfor</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP |
| title | Method for preparing organic improved bentonite on basis of seepage prevention |
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