Umphumela we-cellulose ether (HPMC Mhec) emandleni eBundwar Bonding

I-Cellulose Ether (efana ne-HPMC, i-Hydroxypropyl methylcellulose) kanye ne-Mhec (Methyl hydroxyethyl celtuleose) yi-Admixtures evamile yokwakha futhi isetshenziswa kabanzi ekwakheni kodaka. Badlala indima ebalulekile ekwenzeni ngcono amandla okubopha izibopho, ukwenza ngcono ukusebenza kokwakha kanye nokwelula isikhathi sokusebenza.

1. Izici eziyisisekelo ze-HPMC ne-MHEC
I-HPMC iyindawo eyi-polymer etholwe ukuguqulwa kwamakhemikhali kwe-cellulose yemvelo. Ama-molecule alo aqukethe ama-hydroxypropyl kanye namaqembu we-methyl, okwenza kube ne-solubity enhle yamanzi, ukuqina nokuqina. I-MHEC ifana ne-HPMC, kepha inamaqembu amaningi we-hydroxyethyls esakhiweni sawo samangqamuzana, ngakho-ke ukuqina kwamanzi kanye nokuqina kokusebenza kwe-MHEC kwehlukile. Bobabili bangakha isakhiwo senethiwekhi ku-dutar futhi bathuthukise izakhiwo ezibonakalayo zodaka.

2. Indlela yokwenza kwesenzo se-cellulose ether ngodaka
Ngemuva kokungeza i-HPMC noma i-MHEC kuDinga, i-cellulose ether molekyuli yakha uhlelo oluzinzile lwe-colloidal ngokuxhumana namanzi, ezinye izakhi zamakhemikhali nezinhlayiya zamakhemikhali kanye nezinhlayiya zamamakidi kanye nezinhlayiya zamaminerali. Lolu hlelo lungathuthukisa kakhulu izakhiwo zokubopha ngodaka.

Umphumela wokuqina: I-HPMC ne-MHEC kungakhuphula ukuvumelana kodaka, okwenza kube lula ukusebenza ngesikhathi sokwakha. Lo mphumela wokuqina futhi usiza ukunciphisa ububi buka usimende unamathisele, uthuthukise ukunamathela kodaka, futhi ngaleyo ndlela uthuthukise amandla obusiwe odaka.

Umphumela wokugcina amanzi

Ukwenza ngcono ukusebenza kwe-fluidity kanye nokwakha Ukusebenza: I-Celsulose Ether isiza ukuthuthukisa uketshezi lodaka, okuvumela ukuthi lusetshenziswe ngokulinganayo ebusweni besisekelo, esivumelana nokuhanjiswa okufanayo kwamandla okubopha.

I-3. Umphumela we-cellulose ether emandleni okubopha ngodaka
Ukungezwa kwe-cellulose ether kudaka ngokuvamile kuthinta ngqo amandla abugqilayo odaka. Ngokuqondile, imiphumela ye-HPMC ne-MHEC kumandla obulawa obulawa ngamabhondi aboniswa kulezi zinto ezilandelayo:

3.1 Ithonya emandleni okuqala ahlanganisa ngodaka
I-HPMC ne-MHEC ingathuthukisa ukusebenza kwebhondi phakathi kodaka nobuso besisekelo. Lapho ukwakhiwa sekuqediwe nje, amandla eBonding phakathi kwendawo yodaka kanye ne-substrate athuthukiswa kakhulu ngoba i-cellulose ether ingagcina amanzi futhi inciphise ukoma kwangaphambi kwesikhathi konamathisela kasimende. Lokhu kungenxa yokuthi ukusabela kwesimende kwe-hydration kungahamba kahle, okukhuthaza ukuqina kokuqala kodaka.

3.2 Ithonya Emandleni Obukhosi Esikhathi Eside Sodaka
Njengoba isikhathi sihamba, isakhi sosimende sodaka sithola inqubo eqhubekayo ye-hydration, futhi amandla odaka azoqhubeka anda. Ukusebenza kokugcinwa kwamanzi kwe-cellulose ether kusadlala indima enkulu kule nqubo, ukugwema ukungcoliswa kwamanzi okusheshayo kudaka, ngaleyo ndlela kunciphisa ukuncishiswa kwamandla okubangelwa amanzi anganele.

3.3 Thuthukisa ukumelana nokuqhekeka kodaka
I-HPMC ne-Mhec futhi kungathuthukisa ukumelana nokuqhekeka kodaka. Indlela yayo yesenzo ikakhulukazi ukuthuthukisa ukuqina kwangaphakathi kodaka futhi yehlise izinga lokuhwamuka kwamanzi ebusweni bodaka, ngaleyo ndlela kunciphisa inkinga yokuqhekeka okubangelwa ukuhwamuka kwamanzi. Ngaphezu kwalokho, isakhiwo se-colloidal esakhiwa yi-cellulose ether kudaka singathuthukisa ubulukhuni bodaka oluphelele, okwenza kube mancane amathuba okuba nokuqhekeka kwangaphandle.

3.4 imiphumela ekuthuthukisweni kwamandla kodaka
Ucwaningo lukhombisile ukuthi ukwengeza inani elifanele le-HPMC noma i-MHHC kungathuthukisa amandla okubopha ngodaka ngaphandle kokukhulisa kakhulu isisindo sodaka. Ngokuvamile, umthamo ofanele we-cellulose ether ngu-0,5% -1.5%. Ngaphezu kwalokho kungenza ukuthi udaka abe nodaka ngokweqile, oluthinta izakhiwo zalo zokubopha. Ngakho-ke, inani elifanelekile le-ether le-cellulose elingeziwe libalulekile ekuthuthukiseni amandla okubopha ngodaka.

4. Ukuqhathaniswa kwezinhlobo ezahlukahlukene ze-cellulose afes
Yize i-HPMC ne-MHEC zifana ngendlela yezenzo zabo, imiphumela yazo emandleni eBonding Of Motar ihlukile kuzicelo zangempela. I-MHEC i-hydrophilic eyengeziwe kune-HPMC, ngakho-ke endaweni enomswakama, i-MHEC ingaba nomthelela omkhulu ekuthuthukiseni amandla okubopha. Ngakolunye uhlangothi, i-HPMC, iyenzile ngaphansi kwezimo ezijwayelekile zokushisa kanye nomswakama, futhi ilungele ikakhulukazi amalungiselelo odumu odumile wendabuko.

I-Cellulose Tashers (HPMPC kanye ne-Mhec) zivame ukusetshenziswa izengezo zodaka, okuthuthukisa kakhulu amandla okubopha izibopho ngokuqina, ukugcinwa kwamanzi, kanye nokwenza uketshezi. Ukusetshenziswa okunengqondo kwe-cellulose ether akunakukhulisa kuphela ukunamathela phakathi kodaka nokwengeza amandla, kodwa futhi kuthuthukisa ukumelana nokuqhekeka nokuqina kodaka nokunciphisa udaka lwenkonzo kadaka. Izinhlobo ezahlukahlukene ze-cellulose ether zinokusebenza okuhlukile, futhi zikhetha umkhiqizo ofanele kanye nomthamo kubalulekile ekuthuthukiseni ukusebenza kodaka.