1. Iyini ukusetshenziswa okuyinhloko kwe-cellulose?
I-HPMCisetshenziswa kabanzi ezintweni zokwakha, ezimbozweni, ezinhlayiyeni zokwenziwa, ezitsheni zobumba, kwezokwelapha, ekudleni, ezindwangu, kwezolimo, ezimonyweni, egwayi nakwezinye izimboni. I-HPMC ingahlukaniswa ngebanga lezimboni, izinga lokudla kanye nebanga lemithi ngokuya ngesicelo.
2. Kunezinhlobo eziningana ze-cellulose, futhi yini umehluko ekusetshenzisweni kwazo?
I-HPMC ingahlukaniswa ngohlobo olusheshayo (isijobelelo segama lomkhiqizo "S") kanye nohlobo olushisayo oluncibilikayo. Imikhiqizo yohlobo olusheshayo isakazeka ngokushesha emanzini abandayo bese inyamalala emanzini. Ngalesi sikhathi, uketshezi alunawo u-viscosity ngoba i-HPMC isakazeka kuphela emanzini ngaphandle kokuncibilika kwangempela. Cishe (ivuselela) imizuzu emi-2, u-viscosity woketshezi uyanda kancane kancane, wakhe i-colloid emhlophe ecacile ecwebezelayo. Imikhiqizo eshisayo encibilikayo, lapho ihlangana namanzi abandayo, ingasakazeka ngokushesha emanzini ashisayo bese inyamalala emanzini ashisayo. Lapho izinga lokushisa lehla liye ekushiseni okuthile (ngokusho kokushisa kwejeli lomkhiqizo), u-viscosity uzovela kancane kancane kuze kube yilapho wakhe i-colloid ecacile ecwebezelayo.
3. Yiziphi izindlela zokuncibilikisa i-cellulose?
1). Wonke amamodeli angangezwa ezintweni ngokuxuba okomile;
2). Uma kudingeka ifakwe ngqo esixazululweni samanzi esijwayelekile sokushisa, kungcono ukusebenzisa uhlobo lokusabalala kwamanzi abandayo. Ngokuvamile kuthatha imizuzu eyi-1-30 ukujiya ngemva kokuyifaka (vuselela futhi uvuselele)
3) Amamodeli ajwayelekile aqala axutshwe bese ehlakazwa ngamanzi ashisayo, bese encibilikiswa emanzini abandayo ngemva kokuxutshwa nokuphola;
4). Uma ukuhlangana kwenzeka ngesikhathi sokuncibilika, kungenxa yokuthi ukuxuba akwanele noma imodeli evamile ifakwa ngqo emanzini abandayo. Ngalesi sikhathi, kufanele ixutshwe ngokushesha.
5). Uma amabhamuza ekhiqizwa ngesikhathi sokuncibilika, angashiywa ukuthi ame amahora angu-2-12 (isikhathi esithile sinqunywa ukuhambisana kwesisombululo) noma asuswe ngokuhlanza nge-vacuum, ukucindezela, njll., futhi inani elifanele le-ejenti yokuhlanza lingangezwa.
4. Ungahlulela kanjani ikhwalithi ye-cellulose kalula nangokuqondakalayo?
1) Ubumhlophe, yize ubumhlophe bungenakunquma ukuthi i-HPMC kulula ukuyisebenzisa, futhi uma kufakwa izinto zokwenza mhlophe enqubweni yokukhiqiza, kuzothinta ikhwalithi yayo, kodwa iningi lemikhiqizo emihle inobumhlophe obuhle.
2) Ubunono: Ubunono beI-HPMCngokuvamile ine-mesh engu-80 kanye ne-mesh engu-100, i-mesh engu-120 incane, uma incane kakhulu, kungcono ukuthi ibe ncane.
3) Ukudluliselwa kokukhanya: Ngemva kokuba i-HPMC ibekwe emanzini ukuze yakhe i-colloid esobala, bheka ukudluliselwa kwayo kokukhanya. Uma ukudluliselwa kokukhanya kukhulu, kungcono, okubonisa ukuthi kunezincane ezingancibiliki kuyo, futhi ukudluliselwa kwama-reactor aqondile ngokuvamile kuhle. , I-reactor evundlile imbi kakhulu, kodwa akusho ukuthi ikhwalithi ye-reactor evundlile ingcono kuneye-reactor evundlile, futhi kunezici eziningi zokunquma ikhwalithi yomkhiqizo.
4) Amandla adonsela phansi athile: Uma amandla adonsela phansi athile emakhulu, kulapho esinda khona. Uma amandla adonsela phansi athile ephakama, kulapho okuqukethwe kwe-hydroxypropyl kuphezulu khona emkhiqizweni. Uma okuqukethwe kwe-hydroxypropyl kuphakeme, kulapho ukugcinwa kwamanzi kuthuthuka khona.
5. Lingakanani inani le-cellulose ku-putty powder?
Inani le-HPMC elisetshenziswa ezisetshenziswa ngokoqobo lithintwa yisimo sezulu, izinga lokushisa, ikhwalithi ye-calcium yomlotha wendawo, ifomula yempuphu ye-putty kanye nekhwalithi edingwa amakhasimende. Kunezinhlobo ezahlukene zomehluko ezindaweni ezahlukene, ngokuvamile, uphakathi kuka-4-5 kg.
6. Iyini i-viscosity efanele ye-cellulose?
Ngokuvamile, i-putty powder engu-100,000 yanele, futhi isidingo ku-mortar siphezulu, futhi sidinga u-150,000 ukuze kube lula ukuyisebenzisa. Ngaphezu kwalokho, umsebenzi obaluleke kakhulu we-HPMC ukugcina amanzi, kulandelwe ukuqina. Ku-putty powder, inqobo nje uma ukugcinwa kwamanzi kukuhle futhi i-viscosity iphansi (7-8), kungenzeka futhi. Vele, uma i-viscosity iphakeme, kungcono ukugcinwa kwamanzi. Lapho i-viscosity idlula u-100,000, i-viscosity ayinawo umthelela ekugcinweni kwamanzi.
7. Yiziphi izinkomba zobuchwepheshe eziyinhloko ze-cellulose?
Okuqukethwe kwe-Hydroxypropyl
Okuqukethwe kwe-Methyl
ukujiya
Umlotha
Ukulahlekelwa ekomiseni
8. Yiziphi izinto eziyinhloko zokusetshenziswa kwe-cellulose?
Izinto zokusetshenziswa eziyinhloko ze-HPMC: ukotini ocolisisiwe, i-methyl chloride, i-propylene oxide, i-liquid caustic soda, njll.
9. Uyini umsebenzi oyinhloko wokusetshenziswa kwe-cellulose ku-putty powder? Ingabe kukhona ukusabela kwamakhemikhali?
Phakathi kwempuphu ye-putty, idlala indima ezintathu zokuqina, ukugcinwa kwamanzi kanye nokwakhiwa. Ukuqina, i-cellulose ingaqina ukuze imiswe, igcine isisombululo silingana phezulu naphansi, futhi imelane nokuwa. Ukugcinwa kwamanzi: kwenza impuphu ye-putty yome kancane, futhi isize i-calcium yomlotha ukuthi isabele ngaphansi kwesenzo samanzi. Ukwakhiwa: I-Cellulose inomphumela wokugcoba, ongenza impuphu ye-putty ibe nokwakhiwa okuhle. I-HPMC ayihlanganyeli kunoma yikuphi ukusabela kwamakhemikhali, kodwa idlala indima yokusiza kuphela.
10. I-Cellulose iyi-ether ye-cellulose engeyona i-ionic, ngakho-ke iyini i-non-ionic?
Ngokwesimo sabantu abavamile, izinto ezingasebenzi kahle azihlanganyeli ekusabeleni kwamakhemikhali.
I-CMC (i-carboxymethyl cellulose) iyi-cationic cellulose, ngakho-ke izophenduka ibe yi-bean curd uma ihlangana ne-ash calcium.
11 Lihlobene kanjani izinga lokushisa lejeli le-cellulose?
Izinga lokushisa lejeli le-HPMC lihlobene nokuqukethwe kwayo kwe-methoxy, uma okuqukethwe kwe-methoxy kuphansi, izinga lokushisa lejeli liphakeme.
12. Ingabe kukhona ubudlelwano phakathi kokulahlekelwa yimpuphu yempuphu ye-putty kanye ne-cellulose?
Kukhona ubudlelwano! ! ! Okusho ukuthi, ukugcinwa kwamanzi okungekuhle kwe-HPMC kuzobangela ukulahleka kwempuphu (okuqukethwe kwezinto ezifana nomlotha, i-calcium esindayo, kanye nesamente, izinga lokushisa lokwakha, kanye nesimo sodonga konke kuzothinteka).
13. Uyini umehluko phakathi kwe-cold water instant kanye ne-hot soluble cellulose enqubweni yokukhiqiza?
Uhlobo lwe-HPMC olusheshayo ngamanzi abandayo luphathwa nge-glyoxal ebusweni, futhi lusakazeka ngokushesha emanzini abandayo, kodwa aluncibiliki ngempela. Luncibilika kuphela lapho i-viscosity ikhula. Izinhlobo zokuncibilika okushisayo aziphathwa nge-glyoxal ebusweni. Uma inani le-glyoxal likhulu, ukuhlakazeka kuzoba ngokushesha, kodwa i-viscosity izokhula kancane, futhi uma inani lincane, okuphambene nalokho kuzoba yiqiniso.
14. Kungani i-cellulose inephunga elimnandi?
I-HPMC ekhiqizwa ngendlela ye-solvent isebenzisa i-toluene ne-isopropanol njengezinyibilikisi. Uma ukugeza kungalungile kakhulu, kuzoba nephunga elisele. (Ukuvuselelwa kwe-neutralization kuyinqubo eyinhloko yephunga)
15. Ungayikhetha kanjani i-cellulose efanelekile ngezinjongo ezahlukene?
Impuphu ye-putty: idinga ukugcinwa kwamanzi amaningi, kulula ukwakhiwa
Udaka olujwayelekile olusekelwe kusimende: ludinga ukugcinwa kwamanzi amaningi, ukumelana nokushisa okuphezulu, kanye nokuthamba okusheshayo
Ukusetshenziswa kweglue yokwakha: imikhiqizo esheshayo ene-viscosity ephezulu. (izinga elinconywayo
Udaka lwe-Gypsum: ukugcinwa kwamanzi amaningi, ukuthamba okuphakathi nokuphansi, ukwanda kokuthamba okusheshayo
16. Liyini elinye igama le-cellulose?
Okubizwa ngokuthi i-HPMC noma i-MHPC elias hypromellose, i-cellulose hydroxypropyl methyl ether.
17. Ukusetshenziswa kwe-cellulose ku-putty powder, siyini isizathu samabhamuza ku-putty powder?
Ku-putty powder, i-HPMC idlala indima ezintathu zokuqina, ukugcinwa kwamanzi kanye nokwakhiwa. Izizathu zamabhamuza yilezi:
1. Kufakwa amanzi amaningi kakhulu.
2. Ingqimba engezansi ayomile, mane nje ukhuhle enye ingqimba phezulu, futhi kulula ukuyikhipha igwebu.
18. Uyini umehluko phakathi kwe-cellulose ne-MC:
I-MC iyi-methyl cellulose, eyenziwe nge-cellulose ether ngokwelapha ukotini ocwengekile nge-alkali, kusetshenziswa i-methane chloride njenge-etherification agent, futhi ibhekana nochungechunge lwezimpendulo. Ngokuvamile, izinga lokushintsha liyi-1.6-2.0, futhi ukuncibilika kuyahlukahluka ngamazinga ahlukene okushintsha. Ngokuhlukile, ingeye-non-ionic cellulose ether.
(1) Ukugcinwa kwamanzi kwe-methylcellulose kuncike enanini layo lokwengeza, i-viscosity, ubuncane bezinhlayiya kanye nezinga lokuncibilika. Ngokuvamile, uma inani lokwengeza likhulu, ubuncane buncane, kanti i-viscosity inkulu, izinga lokugcinwa kwamanzi liphezulu. Phakathi kwazo, inani lokwengeza linomthelela omkhulu esilinganisweni sokugcinwa kwamanzi kwabantu. I-viscosity ayilingani nezinga lokugcinwa kwamanzi. Izinga lokuncibilika lincike kakhulu ebusweni bezinhlayiya ze-cellulose. Izinga lokuguqulwa kanye nobuncane bezinhlayiya. Phakathi kwama-ether amaningana e-cellulose angenhla, izinga lokugcinwa kwamanzi le-methyl cellulose kanye ne-Jinshuiqiao cellulose liphakeme.
(2) I-Methylcellulose iyancibilika emanzini abandayo, futhi kuzoba nzima ukuyincibilika emanzini ashisayo. Isixazululo sayo samanzi sizinzile kakhulu ebangeni eliphakathi kwe-ph=3-12. Ihambisana kahle nesitashi, njll. kanye nama-surfactants amaningi. Lapho izinga lokushisa lifinyelelwa, kuzokwenzeka i-gelation.
(3) Izinguquko ekushiseni zizothinta kakhulu izinga lokugcina amanzi le-methyl cellulose. Ngokuvamile, uma izinga lokushisa liphakeme, izinga lokugcina amanzi liba libi kakhulu. Uma izinga lokushisa le-mortar lidlula ama-degrees angu-40, ukugcinwa kwamanzi kwe-methyl cellulose kuzoncishiswa kakhulu, okuzothinta kakhulu ukwakhiwa kwe-mortar.
(4)I-Methyl celluloseKunomthelela omkhulu ekwakhiweni nasekunamatheleni kwe-mortar. Ukunamathela lapha kubhekisela emandleni okunamathela azwakala phakathi kwethuluzi lokufaka isicelo somsebenzi kanye ne-substrate yodonga, okungukuthi, ukumelana nokusika kwe-mortar. Ukunamathela kuphakeme, ukumelana nokusika kwe-mortar kukhulu, futhi amandla adingekayo yizisebenzi enkambisweni yokusebenzisa nawo makhulu, futhi ukusebenza kokwakha kwe-mortar kuphansi.
Isikhathi sokuthunyelwe: Ephreli-25-2024