Amaqembu we-hydroxyl onI-Cellulose EtherAma-molecule nama-athomu omoya-mpilo kuma-ether amabhondi azokwakha izibopho ze-hydrogen ngama-molecule wamanzi, aguqule amanzi akhululekile emanzini aboshwe, ngaleyo ndlela adlala indima enhle ekugcinweni kwamanzi; Ukukhubazeka okuhambisanayo phakathi kwama-molecule amanzi kanye namaketanga ama-cellulose ether ama-molecule avumela ama-molecule wamanzi ukungena ngaphakathi kwe-cellulose ether macromolecular chain futhi abhekane nezinkinga eziqinile, wakha amanzi angenamanzi, athuthukisa ukugcinwa kwamanzi, okuthuthukisa ukugcinwa kwamanzi, okuthuthukisa ukugcinwa kwamanzi, okuthuthukisa ukugcinwa kwamanzi, okuthuthukisa ukugcinwa kwamanzi, okuthuthukisa ukugcinwa kwamanzi, okuthuthukisa ukugcinwa kwamanzi, okuthuthukisa ukugcinwa kwamanzi, okuthuthukisa ukugcinwa kwamanzi, okuthuthukisa ukugcinwa kwamanzi, okuthuthukisa ukugcinwa kwamanzi, okuthuthukisa ukugcinwa kwamanzi, okuthuthukisa ukugcinwa kwamanzi, okuthuthukisa ukugcinwa kwamanzi, okuthuthukisa ukugcinwa kwamanzi, okuthuthukisa ukugcinwa kwamanzi, okuthuthukisa ukugcinwa kwamanzi, okuthuthukisa ukugcinwa kwamanzi kasimende; I-Cellulose Ether ithuthukisa izakhiwo ze-Rheological, ukwakheka kwenethiwekhi ye-porous kanye nengcindezi ye-osmotic ye-slurry yamafutha amasha noma izakhiwo ezakha amafilimu ze-cellulose ether zivimbela ukubekeka kwamanzi.
Ukugcinwa kwamanzi kwe-cellulose ether ngokwako kuvela ku-solubity kanye nokuwohloka komzimba kwe-cellulose ether uqobo. Amandla we-hydration amaqembu we-hydroxyl kuphela akwanele ukukhokhela izibopho eziqinile ze-hydrogen kanye ne-van der Waals amabutho phakathi kwama-molecule, ngakho-ke kuvuvukala kuphela kepha kungancibilikina emanzini. Lapho kufakazelwa kufaka phakathi ku-chain molecular, hhayi nje kuphela ukuthi ukufakazelwa kwe-hydrogen, kepha futhi nezibopho ze-hydrogen zichithwe ngenxa yokushaywa kwamaketanga aphakathi nendawo. Okukhudlwana kokunye, kukhudlwana ibanga phakathi kwama-molecule, kanye nomphumela omkhulu wokubhubhisa ama-hydrogen bond. Ngemuva kokuthi i-cellulose lattice ivuvukala, ikhambi lingena, futhi i-cellulose ether iba incibilika lamanzi, yakha isixazululo esiphezulu, okudlale indima ekugcinweni kwamanzi.
Izici ezithinta ukusebenza kokugcinwa kwamanzi:
I-Viscosity: Kukhuphuka okukhulu kwe-cellulose ether, kungcono ukusebenza kokugcinwa kwamanzi, kepha kukhuphuka isisindo se-polyculity, futhi isisindo saso se-molecular ye-cellulose ether, futhi i-solubelity yayo yehla ngokufanele, okunomthelela ongemuhle ekusebenzeni okuhlushwa kanye nokwakha ngodaka. Ngokuvamile, ngomkhiqizo ofanayo, imiphumela efana nokuvunyelwa okulinganiswa ngezindlela ezahlukahlukene ihluke kakhulu, ngakho-ke uma uqhathanisa i-viscosity, kufanele yenziwe phakathi kwezindlela ezifanayo zokuhlola (kufaka phakathi izinga lokushisa, i-rotor, njll.).
Inani lokungezelela: Lapho inani elikhulu inani le-cellulose ether elingezwe odakeni, ngcono ukusebenza kokugcinwa kwamanzi. Imvamisa, inani elincane le-cellulose ether lingathuthukisa kakhulu inani lokugcinwa kwamanzi ngodaka. Lapho inani lifinyelela ezingeni elithile, umkhuba wokwanda kwezinga lokugcina amanzi unciphise.
Izinhlayiyakazi zobumsulwa Lapho izinhlayiya ezinkulu ze-cellulose ether zithintana namanzi, ingaphezulu lincibilika ngokushesha futhi lakha ijeli lokusonga lokho kuvimbela ama-molecule wamanzi ekuqhubekeni nasekuqhubekeni. Kwesinye isikhathi, ngisho nokushukumisa isikhathi eside akukwazi ukufezekisa ukuhlakazeka okufanayo nokuchithwa, kwakha isixazululo se-turbid flocculent noma i-agglomeration, esithinta kakhulu ukugcinwa kwamanzi kwe-cellulose ether. I-Solubity ingenye yezinto zokukhetha i-cellulose ether. I-Fechness nayo iyinkomba yokusebenza ebalulekile ye-methyl cellulose ether. Ubuhle buthinta i-solubity ye-methyl cellulose ether. I-COARSER MC imvamisa i-granular futhi ingachithwa kalula emanzini ngaphandle kwe-agglomeration, kepha izinga lokuchithwa lihamba kancane futhi alifanele ukusetshenziswa ngodaka olomile.
Ukushisa: Njengoba izinga lokushisa elizwakalayo likhuphuka, ukugcinwa kwamanzi izithambiso ze-cellulose kuvame ukwehla, kepha ezinye izifelu eziguquliwe zibuye zigcine ukugcinwa kwamanzi ngaphansi kwezimo zokushisa eziphakeme; Lapho izinga lokushisa likhuphuka, i-hydration yama-polymers yenza buthaka, futhi amanzi aphakathi kwamaketanga ayaxoshwa. Lapho ukomisa kukwanele, ama-molecule aqala ukuhlanganisa ukwakha ijeli yenethiwekhi enezici ezintathu.
Isakhiwo samangqamuzana: I-Cellulose Tathers enesimilo esiphansi inokugcinwa kwamanzi okungcono.
Ukuqina kanye ne-thixotropy
Ukuqina:
Umphumela ngekhono lokufaka amandla kanye nokulwa nama-anti-sagging: Ama-cellulose afers anikela ngodaka oluhle kakhulu, olungakhulisa kakhulu amandla obugqila ngodaka olumanzi futhi athuthukise ukusebenza kwe-wag-sagging yodaka. Isetshenziswa kabanzi ku-dilarting udaka, udaka olubuyiselwe odongeni lwangaphandle lwe-3.
Umphumela ku-homogeneity ebonakalayo .
Umthombo kanye nethonya lokuqina komphumela: Umphumela wokuqina we-cellulose ether ngezinto zokwakha amasimende uvela ekubonakaleni kwesixazululo se-cellulose ether. Ngaphansi kwezimo ezifanayo, ukukhuphuka kwendlela ye-cellulose ether, okungcono kakhulu kwezinto zokwakha usimende osuselwe kukhulu, kepha uma i-viscosity iphakeme kakhulu, izothinta uketshezi nokusebenza kwezinto ezibonakalayo ). Ukhonkolo ozenzelayo wokuzimela kanye nokhonkolo ozihlanganisa ngezidingo eziphakeme kakhulu zidinga ukubonakala okuphansi kakhulu kwe-cellulose ether. Ngaphezu kwalokho, umphumela wokuqina we-cellulose ether uzophinda akhuphule ukufunwa kwamanzi kwezinto zokwenziwa kokhonkolo futhi wandise ukuphuma kodaka.
Thixotropy:
Isixazululo esiphakeme se-cellule Isixazululo esinamanzi se-methyl cellulose sivame ukuba ne-pseudoplasticity kanye no-un-Thixotropic uketshezi olungaphansi kwe-gel lokushisa, kepha kukhombisa izakhiwo ze-Newtonian flow emazingeni aphansi. I-Pseudoplazity inyuka ngokwanda kwesisindo se-cellulose ether molecular noma ukugxila, futhi ayihlangene nohlobo lokufaka esikhundleni kanye nesilinganiso sokufaka esikhundleni. Ngakho-ke, i-cellulose i-Teshers yebanga elifanayo lokubonana, noma ngabe i-MC, HPMC, noma i-hemc, ngaso sonke isikhathi ikhombisa izakhiwo ezifanayo zembobo inqobo nje uma izinga lokuhlalisana nokushisa kuhlala kuhlala njalo. Lapho izinga lokushisa likhuphuka, kwakhiwa i-geli yesakhiwo, futhi ukuhamba okuphezulu kwe-thixotropic kwenzeka. I-Cellulose Afers enokuhlushwa okuphezulu nokuphansi okubonisa i-thixotropy ngisho nangaphansi kwe-gel lokushisa. Le mpahla inenzuzo enkulu yokulungisa izinga lokulinganisa nokugcotshwa kodaka lokwakha ngesikhathi sokwakha.
Ukufakwa komoya
Umgomo kanye nomphumela ekusebenzeni okusebenzayo: I-CelLose Ether inomphumela omkhulu wokufaka umoya ngezinto zokwenziwa kokonga osuselwa kumasipala. Ama-Cellulose Ether anamaqembu we-hydrophilic (amaqembu e-hydroxyl, amaqembu ether) namaqembu we-hydrophobic (amaqembu we-methyl, izindandatho zikashukela). Kuyinto esetshenziswayo ngomsebenzi ongaphezulu, ngakho-ke ukuba nomphumela wokufaka umoya. Umphumela wokufaka umoya uzokhiqiza umphumela webhola, ongathuthukisa ukusebenza kokusebenza kwezinto ezisanda kuxutshwa, njengokukhulisa i-plastiki nobushelelezi bodaka ngesikhathi sokusebenza, okuzuzisa ekusakazweni kodaka; Kuzophinde kwandise ukuphuma kodaka futhi kunciphise izindleko zokukhiqiza zodaka.
Umphumela wezakhiwo zemishini: Umphumela wokufaka umoya uzokwandisa i-porolity yezinto ezilukhuni futhi wehlise izakhiwo zawo zemishini ezinjengamandla nama-modulus anwestic.
Umphumela we-fluidity: Njenge-survidint, i-ether ye-cellulose futhi inomthelela omanzi noma wokuthambisa ezinhlayiyeni zikakotimu, okuhambisana nomoya wayo ongenisa umoya kwandisa uketshezi lwezinto zokwenziwa komoya, kepha umphumela wazo wokuqina uzonciphisa uketshezi. Umphumela we-cellulose ether e-fluidity yezinto zokwenziwa kosimende uyinhlanganisela yemiphumela yokuqina. Ngokuvamile, lapho umthamo we-cellulose ether uphansi kakhulu, kubonakala ngokukhethekile njengemiphumela yokunciphisa ipulasitiki noma yokunciphisa amanzi; Lapho umthamo uphezulu, umphumela wokuqina we-cellulose ether ukhuphuka ngokushesha, futhi umphumela waso ongenisa umoya uvame ukugcwala, ngakho-ke kuyabonakala njengokufunwa kwamanzi.
Isikhathi sePosi: Dece-23-2024