Cov dej hiav txwv, dej hiav txwv, dej hiav txwv, dej hiav txwv, cov dej hiav txwv, cov chaw nres nkoj thiab lwm cov dej num, vim tsis tsim nyog, tsim kho tsis tsim nyog, kev kho tsis zoo los ntawm cov dej tsis huv, Cov dej ntws nram no feem ntau muaj cov cwj pwm txawv hauv cheeb tsam, cov qauv nyuaj, dej tshaj lossis kev kub siab, siv cov dej ntws tawm hauv qab, cov khoom siv tshuaj lossis lwm yam ntaub ntawv rau kev kho thiab muab khi, los yog vim tsis zoo los yog cov khoom siv thiab Kev tsim kho kev txwv, nws nyuaj rau kev ua si zoo, thiab kev siv cov cement slurry kho thiab sealing, Cement slurry vim tsis zoo sib xws, yuav raug ntxuav ntawm dej yaig thiab dispersion, ua rau tsis ua si lub luag haujlwm ntawm kev kaw .
Hydroxypropyl Methyl Cellulose (HPMC) raws li tus cement slurry thickener, cov cement slurry yog underwater anti-dispersed cement mortar los yog MAAs paste, thaum nws siv cov hydroxypropyl methyl cellulose raws li ib qho tshuaj tiv thaiv cov cement slurry thickener, Wherein hydroxypropyl methyl cellulose yog npaj los ntawm cov txheej txheem ntawm txoj kab sib chaws los yog txoj kev ua raws li theem siab.
Tsuas ntxiv hydroxypropyl methylcellulose ua ib lub thickener rau cov MAAs slurry tsis txaus vim cov thickener tau ho nce lub sib xws ntawm cov MAAs slurry , tiam sis tsis muaj guarantee tias nws yuav muaj zoo fluidity thiab fluidity, Yog li tib lub sij hawm polycarboxylate superplasticizer kuj yuav tsum tau ntxiv rau hauv cov cement slurry.
Ntxiv cov thooj av nplaum hydroxypropyl methyl cellulose underwater anti-dispersion cement slurry hauv qab qhov tsua los yog khov sealing ntawm lwm qhov chaw yuav ua si zoo, vim hais tias cov cement slurry muaj high fluidity, Dej dispersibility, siab zog thiab siab tiv thaiv kabmob, impermeability, nws muaj peev xwm ua tau zoo cov kab dej hauv lub qhov dej tsis xws thiab cov kab nrig me me, los xyuas kom meej tias lub slurry compressive zog thiab antifreeze, impermeability rau hauv dej.