Ukugcinwa kwamanzi kwe-hydroxypropyl methylcellulose ether
Ukugcinwa kwamanzi kodaka oluxubile olomile kubhekisela ekhonweni lodaka lokubamba nokukhiya amanzi. Uma i-hydroxypropyl methylcellulose ether iphakeme, ukugcinwa kwamanzi kuba ngcono. Ngenxa yokuthi isakhiwo se-cellulose siqukethe izibopho ze-hydroxyl ne-ether, ama-athomu e-oxygen emaqenjini ezibopho ze-hydroxyl ne-ether ahlangana nama-molecule amanzi ukuze akhe izibopho ze-hydrogen, ukuze amanzi akhululekile abe amanzi aboshiwe futhi abambe amanzi, ngaleyo ndlela adlale indima ekugcinweni kwamanzi.
Ukuncibilika kwe-Hydroxypropyl Methyl Cellulose Ether
1. I-ether ye-cellulose ether yama-coarse particle kulula ukuyihlakaza emanzini ngaphandle kokuhlangana, kodwa izinga lokuncibilika lihamba kancane kakhulu. I-ether ye-cellulose engaphansi kwe-mesh engu-60 incibilikiswa emanzini cishe imizuzu engama-60.
2. I-ether ye-cellulose ether ethambile kulula ukuyihlakaza emanzini ngaphandle kokuhlangana, futhi izinga lokuncibilika liphakathi. I-ether ye-cellulose engaphezu kwe-mesh engu-80 incibilikiswa emanzini cishe imizuzu emi-3.
3. I-ether ye-cellulose ethambile kakhulu isakazeka ngokushesha emanzini, incibilike ngokushesha, futhi yakhe i-viscosity ngokushesha. I-ether ye-cellulose engaphezu kwe-mesh engu-120 incibilika emanzini cishe imizuzwana eyi-10-30.
Uma izinhlayiya ze-hydroxypropyl methylcellulose ether zincane, kulapho ukugcinwa kwamanzi kuba ngcono khona. Ubuso be-cellulose ether enamafutha amancane buncibilika ngokushesha ngemva kokuthintana namanzi futhi kwakha i-gel phenomenon. Iglue igoqa izinto ukuze ivimbele ama-molecule amanzi ukuthi angaqhubeki nokungena. Ngezinye izikhathi ayikwazi ukuhlakazeka ngokulinganayo futhi ichitheke ngisho nangemva kokuxubha isikhathi eside, yakha isixazululo esinamafu noma i-agglomeration. Izinhlayiya ezincane ziyahlakazeka futhi zincibilike ngokushesha ngemva kokuthintana namanzi ukuze zakhe i-viscosity efanayo.
Inani le-PH le-hydroxypropyl methylcellulose ether (umphumela wokulibazisa noma wamandla okuqala)
Inani le-pH labakhiqizi be-ether ye-hydroxypropyl methylcellulose ekhaya nakwamanye amazwe lilawulwa cishe ku-7, okusesimweni se-acidic. Ngenxa yokuthi kusenenqwaba yezakhiwo zendandatho ye-anhydroglucose esakhiweni sama-molecule se-cellulose ether, indandatho ye-anhydroglucose yiqembu eliyinhloko elibangela ukubuyiselwa emuva kwesimende. Indandatho ye-anhydroglucose ingenza ama-ion e-calcium esixazululweni se-hydration yesimende akhiqize ama-molecule e-sugar-calcium, anciphise ukuhlushwa kwe-calcium ion ngesikhathi sokufakwa kwe-hydration yesimende, avimbele ukwakheka kanye nokuna kwe-calcium hydroxide kanye namakristalu kasawoti we-calcium, futhi abambezele inqubo ye-hydration yesimende. Uma inani le-PH lisesimweni se-alkaline, i-mortar izovela esimweni samandla okuqala. Manje amafektri amaningi asebenzisa i-sodium carbonate ukulungisa inani le-pH. I-Sodium carbonate uhlobo lwe-ejenti yokusetha okusheshayo. I-Sodium carbonate ithuthukisa ukusebenza kobuso bezinhlayiya zesimende, ikhuthaza ukuhlangana phakathi kwezinhlayiya, futhi ithuthukise kakhulu i-viscosity yesimende. Ngesikhathi esifanayo, i-sodium carbonate ihlangana ngokushesha nama-ion e-calcium esihlabathini ukuze ikhuthaze ukwakheka kwe-ettringite, futhi i-simende iyaqina ngokushesha. Ngakho-ke, inani le-pH kufanele lilungiswe ngokuya ngamakhasimende ahlukene enqubweni yokukhiqiza yangempela.
Izakhiwo Zokungenisa Umoya ze-Hydroxypropyl Methyl Cellulose Ether
Umphumela wokungenisa umoya we-hydroxypropyl methylcellulose ether ngokuyinhloko ubangelwa ukuthi i-cellulose ether nayo iwuhlobo lwe-surfactant. Umsebenzi we-interfacial we-cellulose ether uvela kakhulu ku-interface ye-gas-liquid-solid. Okokuqala, ukwethulwa kwamabhamuza omoya, kulandelwe ukuhlakazeka kanye nomphumela we-Wetting. I-Cellulose ether iqukethe amaqembu e-alkyl, anciphisa kakhulu ukungezwani kobuso kanye namandla e-interfacial amanzi, okwenza kube lula ukukhiqiza amabhamuza amaningi amancane avaliwe ngesikhathi senqubo yokuxuba yesisombululo samanzi.
Izakhiwo zejeli ze-Hydroxypropyl Methyl Cellulose Ether
Ngemva kokuba i-hydroxypropyl methylcellulose ether incibilikisiwe ku-mortar, amaqembu e-methoxyl kanye ne-hydroxypropyl ku-molecule chain azosabela nama-calcium ion kanye nama-aluminium ion ku-slurry ukuze akhe ijeli eliqinile futhi agcwalise i-samente mortar void. , athuthukise ukuqina komortar, adlale indima yokugcwalisa okuguquguqukayo kanye nokuqinisa. Kodwa-ke, lapho i-composite matrix ingaphansi kwengcindezi, i-polymer ayikwazi ukudlala indima yokusekela eqinile, ngakho-ke isilinganiso samandla kanye nokugoqa komortar siyancipha.
Ukwakheka Kwefilimu ye-Hydroxypropyl Methyl Cellulose Ether
Ngemva kokuba i-hydroxypropyl methyl cellulose ether ingeziwe ukuze ifuthwe, kwakheka ungqimba oluncane lwefilimu ye-latex phakathi kwezinhlayiya zesimende. Le filimu inomphumela wokuvala futhi ithuthukisa ukoma komphezulu wesimende. Ngenxa yokugcinwa kahle kwamanzi kwe-hydroxypropyl methylcellulose ether, ama-molecule amanzi anele agcinwa ngaphakathi kwesimende, ngaleyo ndlela kuqinisekiswe ukuqina kwesimende kanye nokuthuthukiswa okugcwele kwamandla, kuthuthukiswe amandla okubopha wesimende, futhi ngesikhathi esifanayo kuthuthukisa ukuhlangana kwesimende, kwenza isimende sibe ne-plasticity enhle kanye nokuguquguquka, futhi kunciphisa ukushwabana kanye nokuguquguquka kwesimende.
Isikhathi sokuthunyelwe: Meyi-23-2023