I-cellulose ethers iyisigaba esibalulekile sezithasiselo ezisebenzayo, ezisetshenziswa kabanzi emkhakheni wezinto zokwakha ukuze kuthuthukiswe ukusebenza komkhiqizo. Ikakhulukazi ezintweni ezinamathelayo zamathayela, ama-cellulose ether angathuthukisa kakhulu izakhiwo zawo zomzimba namakhemikhali, athuthukise ukusebenza kokwakhiwa, futhi athuthukise amandla okubopha nokuqina.
1. Izici eziyisisekelo ze-cellulose ethers
I-Cellulose ethers iwukuphuma okutholwe ngokuguqulwa kwamakhemikhali e-cellulose yemvelo, futhi evamile ihlanganisa i-methyl cellulose (MC), i-hydroxypropyl methyl cellulose (HPMC), i-hydroxyethyl cellulose (HEC), njll. Lezi zici zenza ama-cellulose ether adlale indima ebalulekile ekunamatheleni kwamathayela.
2. Ukugcina amanzi okuthuthukisiwe
2.1 Ukubaluleka kokugcinwa kwamanzi
Ukugcinwa kwamanzi okunamathelayo kwamathayela kubalulekile ekusebenzeni kokwakhiwa namandla okubopha. Ukugcinwa kahle kwamanzi kungaqinisekisa ukuthi i-adhesive inomswakama ofanele ngesikhathi senqubo yokuphulukisa, ngaleyo ndlela iqinisekise ukugeleza kukasimende okuphelele. Uma ukugcinwa kwamanzi kunganele, amanzi adonswa kalula yi-substrate noma imvelo, okuholela ekutheni i-hydration engaphelele, ethinta amandla okugcina kanye nomphumela wokubopha we-adhesive.
2.2 Indlela yokugcina amanzi ye-cellulose ether
I-Cellulose ether inamandla okugcina amanzi aphezulu kakhulu futhi ingabopha inani elikhulu lama-molecule amanzi eketangeni layo lamangqamuzana. Isixazululo saso se-aqueous viscosity esiphezulu singakha ukusabalalisa kwamanzi okufanayo ku-adhesive futhi sikhiye amanzi ngesenzo se-capillary kunethiwekhi yokunamathisela ukuvimbela amanzi ukuba angalahleki ngokushesha. Le nqubo yokugcinwa kwamanzi ayihambisani nje kuphela nokusabela kwe-hydration kasimende, kodwa futhi inganweba isikhathi esivulekile sokunamathela futhi ithuthukise ukuguquguquka kokwakhiwa.
3. Thuthukisa ukusebenza kokwakhiwa
3.1 Ukwengezwa kwesikhathi esivulekile
Ukwethulwa kwe-cellulose ether kwandisa isikhathi esivulekile sokunamathisela amathayili, okungukuthi, isikhathi lapho i-adhesive ihlala inamathele ngemva kokusetshenziswa endaweni engaphansi. Lokhu kunikeza izisebenzi zokwakha isikhathi esengeziwe sokulungisa nokubeka amathayili, ngaleyo ndlela kuncishiswe amaphutha okwakhiwa okubangelwa ukucindezela kwesikhathi.
3.2 Ukusebenza okuthuthukisiwe kwe-anti-sagging
Phakathi nenqubo yokwakha, i-adhesive ingase igwebe ngenxa yamandla adonsela phansi ngemva kokubekwa kwama-tile, ikakhulukazi uma isetshenziswa ezindaweni eziqondile. Umthelela wokujiya we-cellulose ether ungathuthukisa indawo yokunamathela, iqinisekise ukuthi ayisheleli lapho inamathela kumathayela. Lesi sakhiwo sibaluleke kakhulu ekuqinisekiseni ukunemba kanye nobuhle obuphelele bokubekwa kwamathayili.
3.3 Ukuthuthukisa ukuthambisa nokusebenza
I-lubricity ye-cellulose ether ithuthukisa ukusebenza kwezinamathelisi zamathayili, okwenza kube lula ukuzisebenzisa nokuwenza isicaba. Le ndawo isiza ukunciphisa ubunzima kanye nesikhathi sokwakha futhi ithuthukise ukusebenza kahle kokwakhiwa.
4. Thuthukisa amandla esibopho
4.1 Thuthukisa ukunamathela kokuqala
Isixazululo se-viscosity esiphezulu esakhiwe i-cellulose ether esixazululweni samanzi singakhuphula ukunamathela kokuqala kwama-tile anamathelayo, ukuhlinzeka ukunamathela ngokushesha lapho ubeka amathayili futhi ugwema ukushelela kwe-tile noma ukuhlakazeka.
4.2 Gqugquzela ukugeleza kukasimende
Ukusebenza kahle kokugcinwa kwamanzi kwe-cellulose ether kuqinisekisa ukusabela okugcwele kwe-hydration kasimende, ngaleyo ndlela kukhiqize imikhiqizo eminingi ye-hydration (njenge-hydrated calcium silicate), okuthuthukisa amandla okubopha kokunamathela. Le nqubo ayigcini nje ukuthuthukisa amandla emishini ye-adhesive, kodwa futhi ithuthukisa ukuqina kwayo nokumelana nokuqhekeka.
5. Ukuqina okuthuthukisiwe nokumelana nokuqhekeka
5.1 Ukumelana nokuncibilika okuthuthukisiwe kweqhwa
Ama-cellulose ethers athuthukisa ukumelana nokuncibilika kokumiswa kwamathayela ngokuthuthukisa ukugcinwa kwamanzi nokubumbana kwezinto ezinamathelayo zamathayela, ehlisa ukufuduka ngokushesha nokulahlekelwa kwamanzi. Lokhu kuthuthukiswa kuvumela okunamathelayo ukuthi kugcine ukusebenza okuzinzile ngisho nasezindaweni ezibandayo kakhulu futhi mancane amathuba okuthi kuqhekeke noma kuphuke.
5.2 Ukumelana nokuqhekeka okuthuthukisiwe
Phakathi nenqubo yokuphulukisa ye-adhesive, isakhiwo senethiwekhi esiminyene esakhiwe ama-cellulose ethers sisiza ukunciphisa ukushwabana kukasimende nokunciphisa ingozi yokuqhekeka okubangelwa ukucindezeleka kokunciphisa. Ukwengeza, umphumela wokujiya we-cellulose ethers wenza i-adhesive igcwalise kangcono igebe phakathi kwethayela ne-substrate, ithuthukise nakakhulu ukuzinza kwesixhumi esibonakalayo esibophezelayo.
6. Eminye imisebenzi
6.1 Nikeza ngezindawo zokuthambisa kanye nezokunqanda ukuhlehla
Ukugcotshwa kwe-cellulose ethers akusizi nje kuphela ukusebenza kokusebenza, kodwa futhi kunciphisa ukwenzeka kwe-adhesive ngesikhathi senqubo yesicelo, ukuqinisekisa ukufana nokuzinza phakathi nenqubo yesicelo.
6.2 Ukwenza ngcono umsebenzi wokwakha
Ngokwandisa i-viscosity nesikhathi sokwakhiwa kwe-adhesive, i-cellulose ether ithuthukisa ukunethezeka kokwakhiwa, okuvumela abasebenzi bokwakha ukuba balungise indawo yama-tile kalula, ukunciphisa ukukhubazeka kokwakhiwa kanye namazinga okusebenza kabusha.
7. Izibonelo Zokusebenza Ze-Cellulose Ether
Kuzinhlelo zokusebenza ezithile, i-cellulose ether ithuthukisa ikhwalithi yephrojekthi yonke ngokuthuthukisa ukusebenza kwe-adhesives tile. Isibonelo, ezindaweni ezithile zokushisa okuphezulu noma ezinomswakama ophansi, izinamathiselo ezijwayelekile zingase zibhekane nenkinga yokulahlekelwa amanzi ngokushesha, okuholela ebunzimeni bokwakha namandla anganele. Ngemuva kokwengeza i-cellulose ether, i-adhesive ingagcina ukugcinwa kwamanzi okuhle, igweme lezi zinkinga, futhi ngaleyo ndlela iqinisekise ikhwalithi yephrojekthi.
I-Cellulose ether ithuthukisa kakhulu ukusebenza kwezinamathelisi zamathayili ngokugcina amanzi, ukujiya kanye nokuthambisa. Akugcini nje ukuthuthukisa ukusebenza kokwakhiwa, amandla okubopha nokuqina kwe-adhesive, kodwa futhi kuthuthukisa ukunethezeka nokuthembeka kokwakhiwa. Lokhu kuthuthukiswa akuthuthukisi nje kuphela ikhwalithi yonke yephrojekthi, kodwa futhi kunikeza ukuguquguquka okukhulu nokuzinza kwenqubo yokwakha. Ngakho-ke, njengesengezo esiyisihluthulelo, ukusetshenziswa kwe-cellulose ether kuma-adhesives we-tile kunenzuzo ebalulekile ebalulekile kanye namathemba abanzi.
Isikhathi sokuthumela: Jun-24-2024