1. Kuyini ukusetshenziswa okuyinhloko kwe-cellulose?
I-HPMCisetshenziswa kabanzi ezintweni zokwakha, okokugqoka, izinhlaka zokwenziwa, izitsha zobumba, imithi, ukudla, izindwangu, ezolimo, izimonyo, ugwayi nezinye izimboni. I-HPMC ingahlukaniswa ngebanga lezimboni, ibanga lokudla kanye nebanga lezemithi ngokuya ngesicelo.
2. Kunezinhlobo eziningana ze-cellulose, futhi yimuphi umehluko ekusetshenzisweni kwazo?
I-HPMC ingahlukaniswa ngohlobo olusheshayo (isijobelelo segama lomkhiqizo “S”) kanye nohlobo lwe-hot-melt. Imikhiqizo yohlobo olusheshayo ihlakazeka ngokushesha emanzini abandayo bese inyamalala emanzini. Ngalesi sikhathi, uketshezi alunayo i-viscosity ngoba i-HPMC ihlakazekile emanzini ngaphandle kokuhlakazeka kwangempela. Cishe (ukunyakazisa) imizuzu emi-2, i-viscosity yoketshezi iyanda kancane kancane, yakha i-viscous colloid esobala. Imikhiqizo encibilikayo eshisayo, lapho ihlangana namanzi abandayo, ingahlakazeka ngokushesha emanzini ashisayo futhi inyamalale emanzini ashisayo. Lapho izinga lokushisa lehla ekushiseni okuthile (ngokuvumelana nezinga lokushisa lejeli lomkhiqizo), i-viscosity izovela kancane kancane ize yakha i-viscous colloid ebonakalayo.
3. Yiziphi izindlela zokuqeda i-cellulose?
1). Wonke amamodeli angangezwa kundaba ngokuxuba okomile;
2). Uma idinga ukungezwa ngokuqondile kwisisombululo esinamanzi esishisayo esivamile, kungcono ukusebenzisa uhlobo lokuhlakazeka kwamanzi abandayo. Ngokuvamile kuthatha imizuzu engu-1-30 ukujiya ngemva kokwengeza (goqa futhi ugovuze)
3). Amamodeli ajwayelekile aqala anyakaziswa futhi ahlakazwe ngamanzi ashisayo, bese ehlakazwa emanzini abandayo ngemva kokugubha nokupholisa;
4). Uma i-agglomeration yenzeka ngesikhathi sokuhlakazwa, kungenxa yokuthi ukunyakazisa akwanele noma imodeli evamile yengezwa ngokuqondile emanzini abandayo. Ngalesi sikhathi, kufanele ixutshwe ngokushesha. i
5). Uma ama-bubbles ekhiqizwa ngesikhathi sokuchithwa, angashiywa ukuze ame amahora angu-2-12 (isikhathi esinqunyiwe sinqunywa ukuvumelana kwesixazululo) noma asuswe ngokuhlanza, ukucindezela, njll., futhi inani elifanele le-ejenti yokukhipha amagwebu nalo lingangezwa. i
4. Indlela yokwahlulela ikhwalithi ye-cellulose kalula futhi ngendlela enembile?
1) Ubumhlophe, nakuba ubumhlophe bungakwazi ukunquma ukuthi i-HPMC kulula ukuyisebenzisa yini, futhi uma ama-ejenti amhlophe engezwa enqubweni yokukhiqiza, izothinta ikhwalithi yayo, kodwa iningi lemikhiqizo emihle inobumhlophe obuhle.
2) Ubuhle: Ubuhle beI-HPMCngokuvamile ine-mesh engu-80 kanye ne-100 mesh, i-120 mesh mincane, inciphe kakhulu iba ngcono.
3) Ukudlulisa ukukhanya: Ngemva kokuthi i-HPMC ifakwe emanzini ukuze yakhe i-colloid esobala, bheka ukudlulisa ukukhanya kwayo. Uma ukudlulisa ukukhanya kukhulu, kungcono, okubonisa ukuthi kukhona okuncane okungancibiliki kuyo, futhi ukudluliswa kwama-reactor aqondile ngokuvamile kuhle. , I-reactor evundlile yimbi kakhulu, kodwa akusho ukuthi ikhwalithi ye-reactor eqondile ingcono kune reactor evundlile, futhi kunezici eziningi zokunquma ikhwalithi yomkhiqizo.
4) Amandla adonsela phansi aqondile: Uma umkhulu amandla adonsela phansi athile, uyasinda kakhulu. Ukuphakama kwamandla adonsela phansi athile, kuyanda okuqukethwe kwe-hydroxypropyl emkhiqizweni. Ukuphakama kokuqukethwe kwe-hydroxypropyl, kuba ngcono ukugcinwa kwamanzi.
5. Iyini inani le-cellulose ku-putty powder?
Inani le-HPMC elisetshenziswa ekusebenzeni okungokoqobo lithintwa isimo sezulu, izinga lokushisa, izinga le-calcium yomlotha wendawo, ifomula ye-putty powder kanye nekhwalithi edingwa amakhasimende. Kukhona umehluko ezindaweni ezahlukene, ngokuvamile, kuphakathi kuka-4-5 kg.
6. Iyiphi i-viscosity efanele ye-cellulose?
Ngokuvamile, i-putty powder engu-100,000 yanele, futhi imfuneko odakeni iphezulu, futhi idinga i-150,000 ukuze kube lula ukuyisebenzisa. Ngaphezu kwalokho, umsebenzi obaluleke kakhulu we-HPMC ukugcinwa kwamanzi, okulandelwa ukujiya. Ku-putty powder, inqobo nje uma ukugcinwa kwamanzi kuhle futhi i-viscosity iphansi (7-8), kungenzeka futhi. Yiqiniso, ukuphakama kwe-viscosity, kungcono ukugcinwa kwamanzi okuhlobene. Lapho i-viscosity idlula i-100,000, i-viscosity ayinawo umthelela ekugcinweni kwamanzi. enkulu.
7. Yiziphi izinkomba zobuchwepheshe eziyinhloko ze-cellulose?
Okuqukethwe kwe-Hydroxypropyl
Okuqukethwe kwe-methyl
i-viscosity
Umlotha
Ukulahlekelwa ekomisweni
8. Yiziphi izinto zokusetshenziswa eziyinhloko ze-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 kwe-putty powder, idlala izindima ezintathu zokuqina, ukugcinwa kwamanzi nokwakhiwa. Ukujiya, i-cellulose ingajiya ukuze imiswe, igcine iyunifomu yekhambi iye phezulu naphansi, futhi imelane nokuntenga. Ukugcinwa kwamanzi: yenza i-putty powder yome kancane, futhi usize i-calcium yomlotha ukuba isabele ngaphansi kwesenzo samanzi. Ukwakhiwa: I-Cellulose inomphumela wokugcoba, ongenza i-putty powder ibe nokwakhiwa okuhle. I-HPMC ayibambi iqhaza kunoma yikuphi ukusabela kwamakhemikhali, kodwa idlala indima yokusiza kuphela.
10. I-Cellulose iyi-ether ye-cellulose engeyona i-ionic, ngakho-ke yini i-non-ionic?
Ngokwemigomo ye-layman, izinto ezingenasici azibambi iqhaza ekuphenduleni kwamakhemikhali.
I-CMC (carboxymethyl cellulose) iyi-cationic cellulose, ngakho izophenduka ibe yi-bean curd uma ihlangana nomlotha we-calcium.
11 Lihlobene nani izinga lokushisa lejeli le-cellulose?
Izinga lokushisa lejeli le-HPMC lihlobene nokuqukethwe kwayo kwe-methoxy, ukwehla kokuqukethwe kwe-methoxy, izinga lokushisa lejeli liphezulu.
12. Ingabe kukhona ubudlelwano phakathi kokulahleka kwempuphu ye-putty powder ne-cellulose?
Kukhona ubudlelwano! ! ! Okusho ukuthi, ukugcinwa kwamanzi okungekuhle kwe-HPMC kuzodala ukulahleka kwempushana (okuqukethwe kwezinto ezifana nomlotha, i-calcium esindayo, nosimende, izinga lokushisa lokwakha, nesimo sodonga konke kuzothinteka).
13. Uyini umehluko phakathi kwe-cellulose yamanzi abandayo esheshayo kanye ne-hot soluble cellulose ohlelweni lokukhiqiza?
Uhlobo olusheshayo lwamanzi abandayo lwe-HPMC luphathwa phezulu nge-glyoxal, futhi luhlakazeka ngokushesha emanzini abandayo, kodwa aluncibiliki ngempela. Incibilika kuphela lapho i-viscosity ikhula. Izinhlobo ezincibilikayo ezishisayo aziphathwa nge-glyoxal. Uma inani le-glyoxal likhulu, ukuhlakazeka kuzoshesha, kodwa i-viscosity izokhula kancane, futhi uma inani lincane, okuphambene kuzoba yiqiniso.
14. Kungani i-cellulose inephunga?
I-HPMC ekhiqizwa indlela yokuncibilikisa isebenzisa i-toluene ne-isopropanol njengezincibilikisi. Uma ukugeza kungalungile kakhulu, kuzoba nephunga elisele. (Ukubuyiswa kokungathathi hlangothi kuyinqubo eyinhloko yephunga)
15. Ungakhetha kanjani i-cellulose efanelekile ngezinhloso ezahlukene?
I-Putty powder: idinga ukugcinwa kwamanzi aphezulu, ukwakhiwa kalula
Udaka olusekelwe kusimende olujwayelekile: ludinga ukugcinwa kwamanzi okuphezulu, ukumelana nezinga lokushisa eliphezulu, kanye ne-viscosity esheshayo
Ukusetshenziswa kweglue yokwakha: imikhiqizo esheshayo ene-viscosity ephezulu. (ibanga elinconyiwe
I-Gypsum mortar: ukugcinwa kwamanzi aphezulu, i-viscosity ephakathi nendawo, ukwanda kwe-viscosity esheshayo
16. Iliphi elinye igama le-cellulose?
Kubhekiselwa kuyo njenge-HPMC noma i-MHPC elias hypromellose, cellulose hydroxypropyl methyl ether.
17. Ukusetshenziswa kwe-cellulose ku-putty powder, yisiphi isizathu sama-bubbles ku-putty powder?
Ku-putty powder, i-HPMC idlala izindima ezintathu zokuqina, ukugcinwa kwamanzi kanye nokwakha. Izizathu zamabhamuza yilezi:
1. Kwengezwa amanzi amaningi kakhulu.
2. Ungqimba olungezansi alomile, vele uhlubule olunye ungqimba phezulu, futhi kulula ukucweba.
18. Uyini umehluko phakathi kwe-cellulose ne-MC:
I-MC i-methyl cellulose, eyenziwe nge-cellulose ether ngokwelapha ukotini ocolisisiwe nge-alkali, kusetshenziswa i-methane chloride njenge-etherification agent, futhi ibhekana nochungechunge lokusabela. Ngokuvamile, izinga lokushintsha lingu-1.6-2.0, futhi ukuncibilika kuyahlukahluka ngamazinga ahlukene okushintsha. Okuhlukile, ingeye-non-ionic cellulose ether.
(1) Ukugcinwa kwamanzi kwe-methylcellulose kuncike enanini layo elingeziwe, i-viscosity, ukucoleka kwezinhlayiyana nezinga lokuqedwa. Ngokuvamile, uma inani elingeziwe likhulu, ukucoleka kuncane, futhi i-viscosity inkulu, izinga lokugcinwa kwamanzi liphezulu. Phakathi kwazo, inani elingeziwe linomthelela omkhulu esilinganisweni sokugcinwa kwamanzi kwabantu. I-viscosity ayilingani nezinga lokugcinwa kwamanzi. Izinga lokuhlakazeka lincike ikakhulukazi ebusweni bezinhlayiya ze-cellulose. I-Degree yokuguqulwa kanye ne-particle fineness. Phakathi kwama-cellulose ether ambalwa angenhla, izinga lokugcinwa kwamanzi e-methyl cellulose ne-Jinshuiqiao cellulose liphezulu.
(2) I-methylcellulose iyancibilika emanzini abandayo, futhi kuyoba nzima ukuyincibilika emanzini ashisayo. Isixazululo saso esinamanzi sizinzile kakhulu ebangeni elithi ph=3-12. Inokuhambisana okuhle nesitashi, njll kanye nama-surfactants amaningi. Lapho izinga lokushisa lapho izinga lokushisa le-gelation lifinyelelwa, i-gelation izokwenzeka.
(3) Ukushintsha kwezinga lokushisa kuzothinta kakhulu izinga lokugcinwa kwamanzi e-methyl cellulose. Ngokuvamile, izinga lokushisa liphakeme, izinga lokugcinwa kwamanzi libi kakhulu. Uma izinga lokushisa lodaka lidlula ama-degree angu-40, ukugcinwa kwamanzi kwe-methyl cellulose kuzoncishiswa kakhulu, okuzothinta kakhulu ukwakhiwa kodaka.
(4)I-Methyl cellulosekunomthelela omkhulu ekwakhiweni nasekubambeleleni kodaka. Ukunamathela lapha kubhekisela emandleni okunamathela azwakalayo phakathi kwethuluzi lesisebenzi lesifakeli kanye ne-substrate yodonga, okungukuthi, ukumelana nokugunda kodaka. I-adhesiveness iphakeme, ukumelana kwe-shear kodaka kukhulu, futhi amandla adingwa ngabasebenzi ngesikhathi sokusebenzisa nawo makhulu, futhi ukusebenza kokwakhiwa kodaka kumpofu.
Isikhathi sokuthumela: Apr-25-2024