Ama-cellulose ethers awuhlobo lwenhlanganisela ye-polymer ekhiqizwa ngokushintsha amakhemikhali i-cellulose yemvelo. Zinezakhiwo eziyingqayizivele zomzimba namakhemikhali futhi zisetshenziswa kabanzi kuma-adhesive ahlukahlukene. Ngenxa yezakhiwo ezinhle kakhulu ze-cellulose ether, ukusetshenziswa kwayo kuma-adhesive akugcini nje ukuthuthukisa ukusebenza kwesibopho somkhiqizo, kodwa futhi kuletha uchungechunge lwentuthuko efana nokuzinza, ukuqina, ukugcinwa kwamanzi, nokuthambisa.
1. Ukuqina komphumela
Omunye wemisebenzi eyinhloko yama-cellulose ethers ukujiya, okuwenza abe yigugu kakhulu ezinhlelweni zokunamathela ezisekelwe emanzini. I-viscosity ye-adhesive ibalulekile ekusebenzeni kwayo kwesicelo, futhi ama-cellulose ethers angakhuphula ngokuphawulekayo i-viscosity ye-adhesive ngokwenza isakhiwo senethiwekhi yamangqamuzana afanayo. Ama-cellulose ethers afana ne-hydroxypropyl methylcellulose (HPMC) kanye ne-hydroxyethyl cellulose (HEC) anemiphumela emihle yokuqina, futhi izakhiwo zawo eziqina zingashintshwa ngezinguquko zesisindo samangqamuzana, izinga lokushintshwa nezinye izici. I-adhesive eqinisiwe ayigcini nje ngokusiza ukunamathela, kodwa futhi ithuthukisa amandla okubopha, okwenza ukuthi isetshenziswe kabanzi ekunamatheleni okwakhiwa, izinto zokunamathisela umkhiqizo wephepha, njll.
2. Nikeza ukugcinwa kwamanzi
Ukugcinwa kwamanzi kungomunye umsebenzi obalulekile we-cellulose ethers kuma-adhesives. Ama-cellulose ethers afaneleka ngokukhethekile ukunamathela emanzini, okungagcina umswakama ngokuphumelelayo futhi kuvimbele i-colloid ukuthi yome ngokushesha. Lokhu kubaluleke kakhulu ezindaweni lapho umswakama uhwamuka ngokushesha. Isibonelo, kuma-adhesives asekelwe ku-cement noma e-gypsum embonini yezokwakha, ama-cellulose ethers angakwazi ukumunca amanzi, akhulise futhi enze ifilimu ye-hydration, enweba isikhathi sokusebenza sokunamathela nokuqinisekisa ukuphepha ngesikhathi sokwakha. Izakhiwo ezibophezelayo azonakaliswa ukomiswa ngaphambi kwesikhathi. Lesi sici siyasebenza nasezindaweni ezifana nokudweba odongeni nezinamatheliso zamathayili ezidinga ukulawula ukuhwamuka kwamanzi.
3. Thuthukisa izakhiwo zokubopha nokunamathela
Ukwengezwa kwe-cellulose ether akukwazi nje ukuqina nokugcina amanzi, kodwa futhi kuthuthukise ngempumelelo amandla okunamathela okunamathelayo. Amaqembu asebenzayo afana ne-hydroxyl ne-ether bond esakhiweni sawo samangqamuzana angakha amabhondi e-hydrogen nokunye ukusebenzisana ngokomzimba namakhemikhali ebusweni bokunamathela, ngaleyo ndlela kuthuthukise ukunamathela kokunamathela. Lokhu kwenza i-cellulose ethers ibe yinhle kakhulu ekubopheni iphepha, ukhuni, izitsha zobumba nezinye izinto. Ukuguquguquka kwe-cellulose ethers kunikeza okunamathelayo okungcono kakhulu kanye nokwenza lula ukwakhiwa, okukuvumela ukuthi usebenzise izakhiwo ezinhle kakhulu zokuhlanganisa ezinhlobonhlobo zama-substrates.
4. Thuthukisa ukuzinza nokumelana nokushelela
Kumaglue wokwakha noma ezinye izinto zokunamathisela ezine-viscosity ephezulu, ama-cellulose ether angathuthukisa ukumelana nokushelela kwesistimu. I-Cellulose ether ingakha isakhiwo senethiwekhi kusibophezelo, ikhawulele uketshezi lwe-binder, ukuze i-coated binder igcine ifomu elizinzile futhi ngeke ishelele ngenxa yamandla adonsela phansi noma izici zangaphandle, ikakhulukazi Ibaluleke kakhulu ezindaweni zokwakha ezifana nokubeka amathayela. . Ngaphezu kwalokho, i-cellulose ether ingaphinde inikeze ingcina izinto ezinhle zokunqanda ukuhlalisa, igweme i-delamination ngesikhathi sokugcinwa nokusetshenziswa, futhi iqinisekise ukufana nokusebenza kwesikhathi eside kwe-adhesive.
5. Thuthukisa ukusebenza kokwakhiwa
I-Cellulose ether ine-lubricity enhle kakhulu kanye ne-dispersibility, okuthuthukisa kakhulu ukusebenza kwayo kuma-adhesives. Izinamatheliso zisebenzisa i-cellulose ether akulula nje ukuzisebenzisa, kodwa futhi zingakha isendlalelo sokunamathela esibushelelezi nesifanayo ngaphandle kokwandisa ubukhulu, ukunciphisa izintambo ngesikhathi sokwakha nokuthuthukisa ulwazi lomsebenzisi. Ngesikhathi esifanayo, ukusetshenziswa kwe-cellulose ether kunganciphisa ngokuphumelelayo ukuncipha kwe-adhesive, ukunciphisa izinkinga zokuqhekeka noma ukuxebuka ngemva kokumboza, futhi kuthuthukise ukuzinza nokuqina kwesendlalelo sokubopha.
6. Thuthukisa ukumelana nemijikelezo yokuncibilika kweqhwa
Kwezinye izindawo zokufaka izicelo ezikhethekile, izinto zokunamathisela zidinga ukwenza imijikelezo eminingi yokuqandisa, njengokwakhiwa kwangaphandle, ezokuthutha nezinye izinkambu. I-Cellulose ether inokumelana okuhle kakhulu kweqhwa, okungagcina ukuqina kwe-adhesive ngaphansi kwezimo zokushisa eziphansi futhi kuvimbele ukunamathela ukuthi konakaliswe phakathi nomjikelezo wokuqhwala. Ngesakhiwo sayo samangqamuzana esizinzile, i-cellulose ether ingagcina izici zokunamathisela okunamathelayo naphezu kokushintsha kwezinga lokushisa, ikwenze ithembeke ngaphansi kwezimo zezulu ezimbi kakhulu. Lokhu kubaluleke kakhulu kumasistimu okunamathela adinga ukuchayeka isikhathi eside ngaphandle.
7. Nikeza ukuvikelwa kwemvelo
Njengento ephuma ku-cellulose yemvelo, ama-cellulose ether anokonakala okuhle kakhulu kwe-biodegradability kanye nokuvikelwa kwemvelo. Ngokungafani nama-polymers okwenziwa, ama-cellulose ethers athathwa ezinsizeni ezivuselelekayo futhi ngeke abangele ukungcoliswa okukhulu kwemvelo ngemva kokusetshenziswa. Ngaphezu kwalokho, i-cellulose ethers inokukhishwa okuphansi kwe-volatile organic compounds (VOC) ngesikhathi sokukhiqiza nokusetshenziswa, futhi ihambisana nezidingo zemithetho yesimanje yemvelo. Ngakho-ke, ekwakhiweni kokwakhiwa kwezinamatheliso ezinobungani bemvelo, ama-cellulose ethers kancane kancane abe ama-thickeners nama-adhesive afanelekile. Binder izinto zokusetshenziswa.
8. Uhlu olubanzi lwezinhlelo zokusebenza
Ngenxa yokuhlukahluka kwawo, ama-cellulose ether adlala indima ebalulekile ekusetshenzisweni kokunamathela kuzo zonke izimboni eziningi. Okokuqala, emkhakheni wokwakha, ama-cellulose ethers asetshenziswa kakhulu kuma-adhesive asekelwe kusimende kanye ne-gypsum ukuze anikeze ukusebenza okuhle kakhulu kokwakhiwa kanye namandla okubopha. Ngaphezu kwalokho, ama-cellulose ethers nawo asetshenziselwa ukupakisha kanye namaglue omkhiqizo wephepha. Ukugcinwa kwabo kwamanzi kanye nezakhiwo eziqinisayo kuthuthukisa ngempumelelo umphumela wokubopha nokuqina kwephepha. Ama-cellulose ethers nawo asetshenziswa kuglue yezokwelapha, ingcina yokudla kanye neminye imikhakha. Ngenxa yezindawo zabo ezingenabuthi, ezingenaphunga futhi ezinzile, zihlangabezana nezidingo eziqinile zokunamathela kule mikhakha.
Njengento ye-polymer esebenzayo, i-cellulose ether inamathemba abanzi okusetshenziswa kokunamathelayo. Ithuthukisa kakhulu ukusebenza kwe-adhesives futhi ihlangabezana nesidingo sokunamathela kwekhwalithi ephezulu embonini yesimanje kanye nezinkambu zokwakha ngochungechunge lwemisebenzi efana nokuqina, ukugcinwa kwamanzi, ukuthuthukisa ukunamathela, ukuthuthukisa ukuzinza, nokwenza ngcono ukusebenza. Ngokuthuthuka okuqhubekayo kwesayensi nobuchwepheshe kanye nezidingo ezikhulayo zabantu zokuvikelwa kwemvelo, indima yama-cellulose ether ekunamathiseleni izobaluleka kakhulu, futhi amathemba okusetshenziswa kwesikhathi esizayo azoba banzi.
Isikhathi sokuthumela: Sep-24-2024