Polyanionic mapadi (PAC) zimagwiritsa ntchito ngati madzimadzi kutaya reducer, mamasukidwe akayendedwe enhancer ndi rheological regulator pobowola madzimadzi.Pepalali limafotokoza mwachidule zolemba zazikulu zakuthupi ndi zamankhwala za PAC, monga kukhuthala, rheology, kusinthana m'malo, chiyero ndi kukhuthala kwa mchere, kuphatikizika ndi milozera yogwiritsira ntchito pobowola madzimadzi.
Mapangidwe apadera a PAC amapangitsa kuti iwonetse magwiridwe antchito abwino kwambiri m'madzi atsopano, madzi amchere, madzi am'nyanja ndi madzi amchere odzaza.Ikagwiritsidwa ntchito ngati sefa yochepetsera pobowola madzimadzi, PAC imakhala ndi mphamvu yowongolera kutayika kwa madzi, ndipo keke yamatope yomwe imapangidwa imakhala yopyapyala komanso yolimba.Monga viscosifier, imatha kupititsa patsogolo kukhuthala kowoneka bwino, kukhuthala kwa pulasitiki ndi mphamvu yakumeta ubweya wamadzimadzi, ndikuwongolera ndikuwongolera matope.Zogwiritsira ntchitozi ndizogwirizana kwambiri ndi zolemba zakuthupi ndi zamankhwala zazinthu zawo.
1. PAC mamasukidwe akayendedwe ndi ntchito pobowola madzimadzi
PAC mamasukidwe akayendedwe ndi khalidwe la njira colloidal kupangidwa pambuyo Kutha m'madzi.Makhalidwe a rheological yankho la PAC ali ndi chikoka chofunikira pakugwiritsa ntchito kwake.Kukhuthala kwa PAC kumagwirizana ndi kuchuluka kwa ma polymerization, ndende ya yankho ndi kutentha.Nthawi zambiri, ndipamwamba digiri ya polymerization, ndipamwamba mamasukidwe akayendedwe;Kukhuthala kumawonjezeka ndi kuwonjezeka kwa PAC ndende;The njira mamasukidwe akayendedwe amachepetsa ndi kuwonjezeka kutentha.NDJ-79 kapena Brookfield viscometer nthawi zambiri amagwiritsidwa ntchito kuyesa mamasukidwe akayendedwe azinthu zakuthupi ndi zamankhwala azinthu za PAC.Kukhuthala kwa zinthu za PAC kumayendetsedwa molingana ndi zofunikira.PAC ikagwiritsidwa ntchito ngati tackifier kapena rheological regulator, mawonekedwe apamwamba a PAC nthawi zambiri amafunikira (chitsanzo chamankhwala nthawi zambiri chimakhala pac-hv, pac-r, etc.).Pamene PAC imagwiritsidwa ntchito makamaka ngati chochepetsera kutaya madzimadzi ndipo sichikuwonjezera kukhuthala kwamadzimadzi obowola kapena kusintha rheology yamadzimadzi obowola omwe amagwiritsidwa ntchito, zinthu zotsika zamakayendedwe a PAC zimafunikira (zogulitsazo nthawi zambiri zimakhala pac-lv ndi pac-l).
Pochita ntchito, rheology ya pobowola madzimadzi ikugwirizana ndi: (1) luso pobowola madzimadzi kunyamula pobowola cuttings ndi kuyeretsa chitsime;(2) Mphamvu ya Leviation;(3) Kukhazikika pakhoma la shaft;(4) Kukhathamiritsa kamangidwe ka pobowola magawo.Rheology yamadzimadzi pobowola nthawi zambiri amayesedwa ndi 6-liwiro rotary viscometer: 600 rpm, 300 rpm, 200 rpm, 100 rpm ndi 6 rpm.Kuwerengera kwa 3 RPM kumagwiritsidwa ntchito kuwerengera kukhuthala kowoneka bwino, kukhuthala kwa pulasitiki, mphamvu yometa ubweya wokhazikika ndi mphamvu yometa ubweya, zomwe zikuwonetsa rheology ya PAC pakubowola madzimadzi.Momwemonso, kukwezeka kwa mamachulukidwe a PAC, kumapangitsanso kukhuthala kowoneka bwino ndi kukhuthala kwa pulasitiki, komanso mphamvu yometa ubweya wanthaka ndi mphamvu yometa ubweya wa static.
Komanso, pali mitundu yambiri ya madzi pobowola madzi (monga madzi pobowola madzi abwino, mankhwala pobowola madzimadzi, mankhwala pobowola madzimadzi, kashiamu mankhwala pobowola madzimadzi, mchere pobowola madzimadzi, nyanja pobowola madzimadzi, etc.), kotero rheology wa PAC mu zosiyanasiyana. kubowola madzimadzi machitidwe osiyana.Kwa machitidwe apadera obowola madzimadzi, pangakhale kupatuka kwakukulu pakuwunika momwe madzimadzimadzimadzimadzimadzi amakhudzira madzi kuchokera ku viscosity index ya PAC.Mwachitsanzo, m'madzi a m'nyanja pobowola madzimadzi, chifukwa chokhala ndi mchere wambiri, ngakhale kuti mankhwalawa ali ndi kukhuthala kwakukulu, kutsika kwapang'onopang'ono kwa chinthucho kumayambitsa kukana kwa mchere wochepa wa mankhwala, zomwe zimabweretsa kusauka kwamakamaka kuchulukirachulukira. Kugwiritsidwa ntchito kwa zinthu zomwe zikugwiritsidwa ntchito, zomwe zimapangitsa kuti ma viscosity awoneke otsika, kukhuthala kwa pulasitiki otsika komanso mphamvu yotsika yometa ubweya wamadzimadzi obowola, zomwe zimapangitsa kuti madzi obowola asamayende bwino, zomwe zingayambitse kukakamira kwambiri. milandu.
Digiri ya 2.Substitution ndi kufanana kwa PAC ndi ntchito yake yogwiritsira ntchito pobowola madzimadzi
Digiri yolowa m'malo mwa zinthu za PAC nthawi zambiri imakhala yayikulu kuposa kapena yofanana ndi 0.9.Komabe, chifukwa cha zosowa zosiyanasiyana za opanga osiyanasiyana, kuchuluka kwa zinthu za PAC ndizosiyana.M'zaka zaposachedwa, makampani opangira mafuta akhala akusintha mosalekeza zofunikira pakugwiritsa ntchito kwa zinthu za PAC, ndipo kufunikira kwa zinthu za PAC zolowa m'malo kukukulirakulira.
Digiri yolowa m'malo ndi kufanana kwa PAC ndizogwirizana kwambiri ndi kuchuluka kwa kukhuthala kwa mchere, kukana mchere komanso kutayika kwa kusefera kwa chinthucho.Nthawi zambiri, kukweza kwa digiri ya PAC m'malo mwake, kumapangitsanso kufanana kwabwinoko, komanso kuchuluka kwa kachulukidwe ka mchere, kukana mchere komanso kusefera kwazinthuzo.
Pamene PAC kusungunuka mu amphamvu electrolyte inorganic mchere njira, ndi mamasukidwe akayendedwe a yankho adzachepa, chifukwa mu otchedwa zotsatira mchere.The ayoni zabwino ionized ndi mchere ndi - coh2coo - Zochita za gulu H2O anion amachepetsa (kapena kuthetsa) homoelectricity pa mbali unyolo wa PAC molekyulu.Chifukwa cha mphamvu yosakwanira yothamangitsa ma electrostatic, ma PAC ma molekyulu amapindika ndikupunduka, komanso zomangira za haidrojeni pakati pa unyolo wa mamolekyulu zimasweka, zomwe zimawononga mawonekedwe oyambira ndikuchepetsa makamaka kukhuthala kwamadzi.
Kuchuluka kwa mchere wa PAC nthawi zambiri kumayesedwa ndi salt viscosity ratio (SVR).Mtengo wa SVR ukakwera, PAC imawonetsa kukhazikika bwino.Nthawi zambiri, kuchuluka kwa kulowetsa m'malo kukukwera komanso kufananiza kwakusinthana, ndikokwera mtengo wa SVR.
PAC ikagwiritsidwa ntchito ngati sefa yochepetsera, imatha kuyika ma anions atali-utali mubowola madzimadzi.Magulu a okosijeni a hydroxyl ndi ether mu unyolo wake wa maselo amapanga ma hydrogen zomangira ndi okosijeni pamwamba pa ma viscosity particles kapena kupanga zomangira zolumikizirana ndi Al3 + pamgwirizano wosweka wa tinthu tadongo, kotero kuti PAC ikhoza kudsorbed pa dongo;The hydration wa angapo sodium carboxylate magulu thickens hydration filimu pamwamba pa dongo particles, kuteteza aggregation wa particles dongo mu tinthu zikuluzikulu chifukwa kugunda (glue chitetezo), ndi angapo dongo zabwino particles adzakhala adsorbed pa unyolo maselo a PAC pa. nthawi yomweyo kupanga wosanganiza maukonde dongosolo kuphimba dongosolo lonse, kuti kusintha kagayidwe bata particles mamasukidwe akayendedwe, kuteteza zili particles mu kubowola madzimadzi ndi kupanga wandiweyani matope keke, Kuchepetsa kusefera.Kukwera kwa kuchuluka kwa zinthu za PAC m'malo, kumakhala kokwera kwambiri kwa sodium carboxylate, kumapangitsanso kufanana kwa m'malo, komanso filimu ya hydration, yomwe imapangitsa kuti chitetezo cha gel chitetezeke cha PAC pobowola madzimadzi, kotero kwambiri. zoonekeratu zotsatira za kuchepetsa kutaya madzimadzi.
3. Kuyera kwa PAC ndi kugwiritsa ntchito kwake pobowola madzimadzi
Ngati pobowola dongosolo madzimadzi ndi osiyana, mlingo wa pobowola madzimadzi mankhwala wothandizila ndi mankhwala wothandizila ndi osiyana, kotero mlingo wa PAC mu machitidwe pobowola madzimadzi osiyana akhoza kukhala osiyana.Ngati mlingo wa PAC pobowola madzimadzi watchulidwa ndipo pobowola madzimadzi ali wabwino rheology ndi kuchepetsa kusefera, chingapezeke mwa kusintha chiyero.
Pansi pamikhalidwe yomweyi, kukwezeka kwa PAC kuyeretsedwa, kumapangitsa kuti zinthu ziziyenda bwino.Komabe, chiyero cha PAC chokhala ndi magwiridwe antchito abwino sichokwera kwenikweni.Kugwirizana pakati pa ntchito ya mankhwala ndi chiyero chiyenera kutsimikiziridwa malinga ndi momwe zinthu zilili.
4. Kugwiritsa ntchito kwa PAC antibacterial ndi kuteteza chilengedwe pobowola madzimadzi
Pazifukwa zina, ma tizilombo tating'onoting'ono timayambitsa kuwonongeka kwa PAC, makamaka pakuchita kwa cellulase ndi nsonga ya amylase, zomwe zimapangitsa kuti PAC iphwanyike unyolo waukulu ndikupanga kuchepetsa shuga, kuchuluka kwa polymerization kumachepa, ndipo kukhuthala kwa yankho kumachepa. .Kuthekera kwa anti enzyme kwa PAC makamaka kumadalira kufanana kwa ma molekyulu m'malo ndi kuchuluka kwa m'malo.PAC yokhala ndi kusinthana kwabwino komanso kulowetsedwa kwakukulu imakhala ndi magwiridwe antchito abwino a anti enzyme.Izi ndichifukwa choti unyolo wam'mbali wolumikizidwa ndi zotsalira za glucose ungalepheretse kuwonongeka kwa ma enzyme.
Digiri ya m'malo mwa PAC ndi yokwera kwambiri, kotero kuti mankhwalawa ali ndi ntchito yabwino yoletsa mabakiteriya ndipo sangatulutse fungo lotayirira chifukwa cha kuthirira pakugwiritsa ntchito kwenikweni, kotero palibe chifukwa chowonjezera zoteteza zapadera, zomwe zimathandizira pakumanga pamasamba.
Chifukwa PAC ndi yopanda poizoni komanso yopanda vuto, ilibe kuipitsa chilengedwe.Kuphatikiza apo, imatha kuwola pansi pamikhalidwe yazachilengedwe.Chifukwa chake, ndikosavuta kuchiza PAC mumadzimadzi obowola zinyalala, ndipo sikuvulaza chilengedwe mutalandira chithandizo.Chifukwa chake, PAC ndiyabwino kwambiri pobowola madzimadzi poteteza chilengedwe.
Nthawi yotumiza: May-18-2021