Ukuncibilika kanye nokuthamba kwe-HEC cellulose ezimbozweni ezisekelwe emanzini

Isifinyezo:

Eminyakeni yamuva nje, izembozo ezisekelwe emanzini ziye zathola ukunakwa kabanzi ngenxa yobungani bazo bemvelo kanye nokuqukethwe okuphansi kwe-volatible organic compound (VOC). I-Hydroxyethylcellulose (HEC) iyi-polymer encibilika emanzini esetshenziswa kabanzi kulezi zindlela, esebenza njengesithako sokwandisa i-viscosity kanye nokulawula i-rheology.

ukwethula:

1.1 Isizinda:

Izembozo ezisekelwe emanzini sezibe yindlela engcono kakhulu kunezembozo ezisekelwe ku-solvent, zixazulula izinkinga ezihlobene nokukhishwa kwezakhi eziphilayo eziguquguqukayo kanye nomthelela emvelweni. I-Hydroxyethylcellulose (HEC) iyi-cellulose derivative eyisithako esibalulekile ekwakheni izembozo ezisekelwe emanzini futhi inikeza ukulawula nokuqina kwe-rheology.

1.2 Izinhloso:

Lesi sihloko sihlose ukucacisa izici zokuncibilika kwe-HEC ezimbozweni ezisekelwe emanzini futhi sifunde ithonya lezici ezahlukahlukene ekuqineni kwayo. Ukuqonda lezi zici kubalulekile ekwenzeni ngcono ukwakheka kwembozo nokufeza ukusebenza okufiselekayo.

I-Hydroxyethylcellulose (HEC):

2.1 Isakhiwo kanye nokusebenza:

I-HEC iyi-cellulose derivative etholakala ngokusabela kwe-etherification kwe-cellulose ne-ethylene oxide. Ukufakwa kwamaqembu e-hydroxyethyl emgogodleni we-cellulose kunegalelo ekuncibilikeni kwamanzi futhi kuyenza ibe yi-polymer ebalulekile ezinhlelweni ezisekelwe emanzini. Isakhiwo sama-molecule kanye nezakhiwo ze-HEC kuzoxoxwa ngazo ngokuningiliziwe.

Ukuncibilika kwe-HEC emanzini:

3.1 Izici ezithinta ukuncibilika:

Ukuncibilika kwe-HEC emanzini kuthinteka yizici eziningana, okuhlanganisa izinga lokushisa, i-pH, kanye nokuhlushwa. Lezi zici kanye nomthelela wazo ekuncibilikeni kwe-HEC kuzoxoxwa ngazo, kuhlinzekwe ukuqonda ngezimo ezivumela ukuncibilika kwe-HEC.

3.2 Umkhawulo wokuncibilika:

Ukuqonda imikhawulo yokuncibilika ephezulu nephansi ye-HEC emanzini kubalulekile ekwakheni izembozo ezisebenza kahle kakhulu. Lesi sigaba sizogxila ebangeni lokuhlushwa lapho i-HEC ikhombisa khona ukuncibilika okuphezulu kanye nemiphumela yokudlula le mikhawulo.

Thuthukisa i-viscosity nge-HEC:

4.1 Indima ye-HEC ekuqineni kwe-viscosity:

I-HEC isetshenziswa njengesithako esijiyile ezimbozweni ezisekelwe emanzini ukusiza ukwandisa i-viscosity nokuthuthukisa ukuziphatha kwe-rheological. Izindlela i-HEC efinyelela ngazo ukulawula i-viscosity zizohlolwa, kugcizelelwe ukusebenzisana kwayo nama-molecule amanzi nezinye izithako ekwakhiweni kwe-viscosity.

4.2 Umphumela wezinguquko zefomula ku-viscosity:

Izinguquko ezahlukene zokwakheka, okuhlanganisa ukuhlushwa kwe-HEC, izinga lokushisa, kanye nesivinini sokusika, kungathinta kakhulu ukujiya kwezimbozo ezithwala amanzi. Lesi sigaba sizohlaziya umthelela walezi zinguqunguquko ekujiya kwezimbozo eziqukethe i-HEC ukuze kunikezwe ukuqonda okusebenzayo kwabakhi befomula.

Izicelo kanye namathemba esikhathi esizayo:

5.1 Izicelo zezimboni:

I-HEC isetshenziswa kabanzi ezinhlotsheni ezahlukene zezimboni ezifana nopende, izinamathiseli kanye nezivalo. Lesi sigaba sizoqokomisa iminikelo ethile ye-HEC ekumbozweni kwamanzi kulezi zinhlelo zokusebenza futhi sixoxe ngezinzuzo zayo ngaphezu kwezinye izithambisi.

5.2 Iziqondiso zocwaningo lwesikhathi esizayo:

Njengoba isidingo sezingubo zokumboza ezisimeme nezisebenza kahle siqhubeka nokukhula, kuzohlolwa iziqondiso zocwaningo zesikhathi esizayo emkhakheni wezindlela zokwakheka ezisekelwe ku-HEC. Lokhu kungafaka phakathi izinto ezintsha ekuguqulweni kwe-HEC, amasu amasha okwakheka, kanye nezindlela ezithuthukisiwe zokuchaza.

Ekuphetheni:

Sifingqa okutholakele okuyinhloko, lesi sigaba sizogqamisa ukubaluleka kokuncibilika kanye nokulawulwa kwe-viscosity ezimbozweni ezithwala amanzi kusetshenziswa i-HEC. Lesi sihloko sizophetha ngemiphumela ewusizo kubakhi kanye nezincomo zocwaningo olwengeziwe lokuthuthukisa ukuqonda kwe-HEC ezinhlelweni ezithwala amanzi.