Cellulose ether imatha kusintha kwambiri matope onyowa, ndipo ndi chowonjezera kwambiri chomwe chimakhudza matope omanga. Kusankhidwa koyenera kwa cellulose kukhala ndi mitundu yosiyanasiyana, ma viscosies osiyanasiyana, kukula kwa tinthu tating'onoting'ono, madigiri osiyanasiyana owonjezeredwa ndikuthandizira kusintha kwa matope a ufa wa ufa. Pakadali pano, matope ambiri ndi matope okhala ndi magwiridwe antchito osavomerezeka, ndipo madziwo amalekanitsa atangoimirira. Kusungidwa kwamadzi ndikofunikira pakugwiritsa ntchito methyl cellulose ether ether, ndipo ndi ntchito yomwe ambiri amawuma opanga matope, makamaka iwo akumwera kum'mwera ndi kutentha kwakukulu, samalani. Zinthu zomwe zimakhudzanso madzi kubwezeretsa madzi owuma pa ufa wa ufa umaphatikizapo kuchuluka kwake, mafayilo, kukoma kwa tinthu, ndi kutentha kwa malo ogwiritsira ntchito.
Kusunga kwamadzi kwa cellulose ether
Popanga zida zomangira, makamaka matope a ufa, cellulose ether imagwira ntchito yosasinthika, makamaka popanga matope apadera (matope osinthika), ndi chinthu chofunikira komanso chofunikira. Udindo wofunikira wa sungunuka wamadzi wosungunulira wamadzi mu matope makamaka ali ndi magawo atatu, imodzi ndi njira yabwino yopezera ndalama, inayo ndiye chidwi cha matope ndi simenti. Madzi osunga ma cellulose ethel ether amatengera madzi ophatikizika, kapangidwe ka matope, makulidwe a matope, kufunidwa kwamadzi kwa matope. Kusunga kwamadzi kwa maselo a cellulose kumachokera ku sulubility ndi madzinjeme a cellulose e okha. Monga tonse tikudziwa, ngakhale kuti ma cellulose a cellulose amakhala ndi mitundu yambiri yamagulu ambiri, samasungunuka m'madzi, chifukwa mawonekedwe a cellulose ali ndi crystality wamkulu. Kutha kwa ma hydrobyl kwa magulu a hydroxyl sikukwanira kuphimba maukonde olimba ndi van Der Waals pakati pa mamolekyulu. Chifukwa chake, zimangotupa koma sizisungunuka m'madzi. Pamene gawo lazolowera limayambitsidwa mu mawonekedwe a ma molecular, osati gawo lokhalo lomwe limawononga unyolo wa hydrogen, komanso mgwirizano wa hydchain umawonongedwa chifukwa cha ukwati wapafupi ndi maunyolo oyandikana nawo. Kukula m'malo mwake, kwakukulu pakati pa mamolekyulu. Chachikulu mtunda. Zotsatira zazikulu zakuwononga magwiridwe antchito a hydrogen, ma cellulose amasungunuka osungunuka madzi pachipindachi atayamba kukula ndi yankho lolowa, ndikupanga yankho lalitali. Kutentha kukakwera, hydration kwa polima kumachepetsa, ndipo madzi pakati pa maunyolo amachotsedwa kunja. Mphamvu zokwanira zikakhala zokwanira, mamolekyulu amayamba kuphatikizika, ndikupanga mawonekedwe atatu a gel osakaniza ndikupindidwa.
Nthawi zambiri, mafakiti apamwamba, abwinobwino amadzisungira madzi. Komabe, mafayilo apamwamba komanso olemera kwambiri, kuchepa kolingana kofananira mu kusungunuka kwake kumabweretsa zovuta pa mphamvu ndi matope omanga matope. Maonekedwe ake, zoonekeratu kuti zimakula kwambiri patavala matope, koma siyofanana mwachindunji. Matope owoneka bwino, ndiye kuti, pomanga, amawonetsedwa ngati kumamatira ku starpiper ndi kutsatira kwakukulu kwa gawo lapansi. Koma sizothandiza kukulitsa mphamvu ya matonthozo onyowa. Pakumanga, magwiridwe antchito a Anti-Anti-sag sizachidziwikire. M'malo mwake, sing'anga zina zapakati komanso zochepa koma kusinthidwa methyl cellose celluse kukhala ndi ntchito yabwino kwambiri pokonzanso mphamvu ya matope onyowa.
Kukula ndi thixotropy ya cellulose ether
Palinso ubale wabwino pakati pa kusasinthika kwa sitementi ya simenti ndi mlingo wa ether ether. Cellulose ether ingakulitse kwambiri matope a matope. Kukulira mlingo, zoonekeratu zotsatira zake. Mawonekedwe apamwamba kwambiri cellulose a mu chixotropy ali ndi hixotropy, yomwe ilinso chinthu chachikulu cha cellulose ether ether.
Kukula kumadalira kuchuluka kwa polymerization kwa cellulose ether, yankho la ndende, kumeta ubweya, kutentha ndi zinthu zina. Katundu wolumikizidwayo ndi wapadera ku cellulose ya alkyl ndi zotumphukira zake. Kuchuluka kwa milita kumakhudzana ndi kuchuluka kwa malo olowa m'malo mwake, yankho ndi zowonjezera. Kwa hydroxyalyl osinthidwa, gel katundu wa gel omwe amakhudzananso ndi kuchuluka kwa hydroxyalkyl. Kwa ma viscrence Otsika Mc ndi HPMC, 10% -15% yankho la mac ndi 2%, ndipo nthawi zambiri amatha kungosinthanitsa ndi ma virus, ndipo nthawi zambiri amagawana ndi 1% -2% yankho. Kulemera kwambiri kwa cellulose etheulose ether ali ndi luso lalikulu. Mu yankho lomweli, yankho lomweli ndi miyala yosiyanasiyana imakhala ndi ma viscosies osiyanasiyana. Digirii. Ma Isccience amangotha kugwiritsa ntchito kuchuluka kwa ma celluur ether ether. Mavinyewa ake alibe kudalira pang'ono mtengo wometa ubweya, ndipo ma virus okwera amafika ku Viccect, ndipo kuchuluka kowonjezereka ndikochepa, ndipo mafayilo amatengera luso la kukula. Chifukwa chake, kukwaniritsa zosasinthika, kuchuluka kwa ethel ether ether (kukhazikika kwa yankho) ndi njira ya kusintha kwa iyenera kutsimikiziridwa. Kutentha kwa gel kulimanso kumachepetsa chozungulira ndikuwonjezeka kwa kuchuluka kwa njira yothetsera vutoli, ndipo ma gels firiji mukamaliza ndende inayake. Kukhazikika kwa HPMC ndikokwera kwambiri kutentha.
Kubwezera kwa cellulose ether
Ntchito yachitatu ya ethel ether ndikuzengereza kuchuluka kwa simenti. Cellulose ether amavala matope ndi zinthu zosiyanasiyana zopindulitsa, komanso amachepetsa kutentha koyambirira kwa simenti ndikuchepetsa mphamvu ya simenti. Izi ndizosavuta kugwiritsa ntchito matope m'malo ozizira. Kubweza kumeneku kumachitika chifukwa cha Adsorption ya ma cellulose ether mamolekyulu pazinthu zopatsa mphamvu monga Chs ndi Ca (O) 2. Chifukwa chakuwonjezereka kwa mawonekedwe a core, cellulose emeulse yochepetsera kusuntha kwa ma ions mu yankho, poyerekeza ndi hydration njira. Kukwera kwambiri kwa cellulose ether mu mchere gel osakaniza, zomwe zimaperekedwa pakuchepetsa hydration. Cellulose ether osakhala kuchedwa, komanso kuchepetsedwa ndikulimba kwa matope a simenti. Kubwezeretsanso zotsatira za cellulose ethel ether kumatengera zochepa kokha pazomwe zimachitika m'gulu la gel, komanso pa mankhwala. Kukwera kwambiri kwa methylation ya hemc, yabwinobwino yobwezera kwa cellulose ether ether. Chiwerengero cha hydrophilic chogwiritsira ntchito madzi powonjezera madzi ndikubwezera. Komabe, mamasukidwe a cellulose ether ali ndi mphamvu pang'ono pa simenti hydration kinetics.
Matope, ma cellulose ether amayamba kukhala ndi gawo la kusungidwa kwamadzi, kukulitsa, kuchedwa mphamvu ya simenti hymary, ndikusintha magwiridwe antchito. Kutha kwa madzi kumapangitsa simenti hydration kwambiri, kumatha kukonza mafashoni onyowa matope, onjezerani mphamvu ya matope, ndikusintha nthawi. Kuonjezera ma cellulose ether to matope opopera matope amatha kukonza ma spory kapena kupopera ntchito ndi mphamvu yamatope. Chifukwa chake, ma cellulose ether akugwiritsidwa ntchito kwambiri ngati chowonjezera chofunikira m'matope osakanikirana
Post Nthawi: Feb-22-2025