Ukusetshenziswa kwe-HPMC ku-Ceramics yezinyosi

Ubumba lwezinyosi bezinyosi lusetshenziswe kabanzi emikhakheni ehlukahlukene njengokuvikelwa kwezemvelo, imboni yezimoto, ukuqina okungcono kakhulu kwe-tenoty, ukushiyeka okuphezulu kwe-honeycomb kubenza balungele abaguquli bezinyosi, ukushintshaniswa kokushisa. Kodwa-ke, ukukhiqizwa kwe-pendamics yezinyosi kudinga ubuchwepheshe obuthuthukisiwe nezinto zokwakha ezinezici eziphakeme. I-Hydroxypropyl Methylcellulose (HPMC) ifakazele ukuthi isengezo esithembisayo se-ceramics yezinyosi ngenxa yezakhiwo zayo ezinhle kakhulu kanye nokusebenza kwezindleko.

I-HPMC iyi-ether engekho e-Ionic Cellulose ikakhulukazi eyenziwe nge-cellulose yemvelo. Kuyinto polymer encibilikayo yamanzi exubana kalula ngamanzi. Njengosizo lokucubungula, i-HPMC ingathuthukisa izakhiwo ze-rheological zokuncipha kobumba, njengokuqonda, ukuqina kanye nokufana. Ngemuva kokungezwa i-HPMC, i-slurry ye-ceramic ingahle ibekwe ngaphakathi ku-honeycomb substrate, isiza ukugwema iziphambeko nokuqhekeka kumkhiqizo wokugcina. Ngaphezu kwalokho, i-HPMC ingasetshenziswa njenge-blinder phakathi kwezinqubo zokomi nezokudubula, ezingathuthukisa amandla nokuqina kwe-ceramics yezinyosi. Ukuba khona kwe-HPMC nakho kungakhiqiza indawo ephakeme ephezulu yezinyosi zobumba zezinyosi, ezilungele ukusabela kwe-catalytic.

Ukungezwa kwe-HPMC kwandisa i-pososion ye-ceramics yezinyosi cishe nge-10%, okufakwe ekwakhekeni kwenethiwekhi ye-pore exhumeke kakhulu. Ukwanda kwe-porosity kuzuzisa ukuguquguquka kwama-reckants ekuphendukeni kwe-catalytic. Ngaphezu kwalokho, i-HPMC ingathuthukisa amandla nobunzima be-ceramics yezinyosi ngokwakha inethiwekhi eguquguqukayo phakathi kwezinhlayiya ukumelana nokushaqeka kwe-thermal ngesikhathi sokudubula. Ukungezwa kwe-HPMC nakho kukhulisa indawo ethile engaphezulu ye-peramics yezinyosi nge-23%, engathuthukisa ukusebenza kwayo kwe-catalytic.

Ukungezwa kwe-HPMC kunganciphisa i-shrinkage kanye ne-deformation of ceramics yezinyosi, okuwusizo ekuzinzeni okubucayi kwayo. Ngaphezu kwalokho, i-HPMC ingaphinde yandise i-modulus yokugcina ye-ceramics yezinyosi, ngaleyo ndlela yenza ngcono izakhiwo zazo zemishini. I-HPMC ibuye ithuthukise umsebenzi we-catalytic we-ceramics yezinyosi ngenxa yokukhulisa indawo engaphezulu nokuhlakazeka okungcono kwezakhi ezisebenzayo.

I-HPMC ibuye ivimbele ubumba bezinyosi bezinyosi kusuka ekulimaleni nasekuqhekekeni ngesikhathi sokomiswa ngokwakha inethiwekhi ezinzile neguqukayo phakathi kwezinhlayiya. Baphetha ngokuthi i-HPMC iyisengezo esithembisayo sokukhiqizwa okuphezulu nokusebenza kahle kwe-ceramics yezinyosi.

I-HPMC iyisengezo esisha futhi esithembisayo sezinyosi sezinyosi ngenxa yokusebenza kwayo okuhle kanye nokusebenza kwezindleko. Ukungezwa kwe-HPMC kungathuthukisa izakhiwo ze-bhe ngokomqondo, i-porolity, amandla kanye nokusebenza kwe-catalytic kwe-ceramics yezinyosi. Ngaphezu kwalokho, i-HPMC nayo ingathuthukisa ukuqina kobukhulu, izakhiwo zemishini kanye nenqubo yokubumba ye-ceramics yezinyosi. Ukusetshenziswa kwe-HPMC ku-Ceramics yezinyosi kunethuba elihle emikhakheni ehlukahlukene. Kudingeka ucwaningo olwengeziwe ukwenza ngcono ukugxila nokusebenzisa izindlela ze-HPMC, futhi uhlole indlela yalo yesenzo ku-Ceramics yezinyosi.