1. Iyini ukusetshenziswa okuyinhloko kwe-hydroxypropyl methyl cellulose?
I-HPMCIsetshenziswa kabanzi ezintweni zokwakha, ezimbozweni, ezinhlayiyeni zokwenziwa, ezitsheni zobumba, kwezokwelapha, ekudleni, ezindwangu, kwezolimo, ezimonyweni, egwayi nakwezinye izimboni. I-HPMC ingahlukaniswa ibe yizinga lezimboni, izinga lokudla kanye nezinga lezokwelapha ngokuya ngokusetshenziswa.
2. I-Hydroxypropyl methyl cellulose ihlukaniswe ngezinhlobo eziningana, uyini umehluko phakathi kwazo?
I-HPMC ingahlukaniswa ibe yimikhiqizo esheshayo (isijobelelo somkhiqizo "S") kanye nemikhiqizo encibilikayo eshisayo, imikhiqizo esheshayo, emanzini abandayo isakazeka ngokushesha, inyamalale emanzini, ngalesi sikhathi uketshezi alunawo u-viscosity, ngoba i-HPMC isakazeka nje emanzini, akukho ukuncibilika kwangempela. Cishe imizuzu emi-2, u-viscosity woketshezi uyanda kancane kancane, wakhe ijeli ecacile nenamathelayo. Imikhiqizo encibilikayo eshisayo, ehlanganiswe emanzini abandayo, ingasakazeka ngokushesha emanzini ashisayo, inyamalale emanzini ashisayo, njengokushisa kwehle kuye ekushiseni okuthile (ngokusho kokushisa kwejeli komkhiqizo), u-viscosity uvela kancane kancane, kuze kube yilapho kwakheka i-colloid ecacile e-viscous.
3. Ungayithola kanjani ikhwalithi ye-hydroxypropyl methyl cellulose kalula nangokuqondakalayo?
1) ubumhlophe, yize ubumhlophe bungenakunquma ukuthi i-HPMC ilungile yini, futhi uma ingezwa enqubweni yokukhiqiza, kuzothinta ikhwalithi yayo, kodwa, imikhiqizo emihle ikakhulukazi ubumhlophe buhle.
2) ubucwebe: Ubucwebe be-HPMC ngokuvamile bungama-mesh angu-80 kanye nama-mesh angu-100, ngaphansi kwenhloso engu-120, uma bucwebe kakhulu kungcono.
3) ukuhanjiswa kokukhanya: I-HPMC emanzini, yakha i-colloid esobala, ibona ukuhanjiswa kwayo kokukhanya, lapho ukungena kwayo kukhulu, ichaza ukuthi akukho okuncibilikayo ngaphakathi, i-kettle yokusabela eqondile ngamadigri ngokuvamile inhle, izothumela ezinye ze-kettle yokusabela evundlile, kodwa ayikwazi ukuchaza ukuthi ikhwalithi yokukhiqiza i-kettle eqondile ingcono kunokuqagela ukukhiqizwa kwe-kettle, kunezici eziningi ezinquma ikhwalithi yomkhiqizo.
4) isilinganiso: uma isilinganiso sikhulu, lapho sisinda khona kungcono, kunesiyinhloko, ngokuvamile ngenxa yokuqukethwe okuphezulu kwe-hydroxypropyl ngaphakathi, okuqukethwe kwe-hydroxypropyl kuphezulu, ukugcinwa kwamanzi kungcono.
4. Yiziphi izindlela zokuncibilikisa i-hydroxypropyl methyl cellulose?
1) Wonke amamodeli angafakwa ezintweni ngendlela yokuxuba eyomile;
2) Kudingeka kufakwe ngqo esixazululweni samanzi esijwayelekile sokushisa, kungcono ukusebenzisa ukuhlakazwa kwamanzi abandayo, ngemva kokungeza ngokuvamile emizuzwini eyi-10-90 ukuze kube lukhuni (hlanganisa ukuxuba)
3) Amamodeli ajwayelekile angancibilikiswa ngemva kokuxuba nokuhlakaza ngamanzi ashisayo nokufaka amanzi abandayo ngemva kokuxuba nokuphola;
4) Uma kuncibilika, uma kwenzeka into yokuhlanganisa izinto, kungenxa yokuthi ukuxuba akwanele noma imodeli evamile ifakwe ngqo emanzini abandayo. Ngalesi sikhathi, kufanele ivuselelwe ngokushesha.
5) Uma kuvela amabhamuza ngesikhathi sokuncibilika, angasuswa ngokuma amahora angu-2-12 (isikhathi esithile sincike ekuqineni kwesisombululo) noma ngokufaka u-vacuum cleaner kanye nokucindezela, noma ngokufaka inani elifanele le-ejenti yokuhlanza.
5 i-hydroxypropyl methyl cellulose kumthamo we-putty powder?
I-HPMC ekusetshenzisweni kwangempela kwenani, ngokwesimo sezulu, izinga lokushisa, ikhwalithi ye-calcium empunga yendawo, ifomula yempuphu ye-putty kanye nezidingo zamakhasimende zekhwalithi ehlukile, futhi kukhona umehluko nxazonke, ngokuvamile phakathi kwamakhilogremu angu-4-5.
6. Iyini i-viscosity efanele ye-hydroxypropyl methyl cellulose?
Impuphu ye-putty ngokuvamile ingamathini ayi-100000, izidingo ze-mortar ziphakeme, kuya ku-150000 zinhle nje, kanti indima ebaluleke kakhulu ye-HPMC ukugcinwa kwamanzi, kulandelwe ukuqina. Kumpuphu ye-putty, inqobo nje uma ukugcinwa kwamanzi kukuhle, i-viscosity iphansi (7-8), kungenzeka futhi, vele, i-viscosity inkulu, ukugcinwa kwamanzi okuhlobene kungcono, lapho i-viscosity ingaphezu kuka-100,000, i-viscosity yokugcinwa kwamanzi ayiningi.
7. Yiziphi izinto eziyinhloko zokusetshenziswa kwe-hydroxypropyl methyl cellulose?
I-HPMCizinto zokusetshenziswa eziyinhloko: ukotini ocolisisiwe, i-chloromethane, i-propylene oxide, ezinye izinto zokusetshenziswa, i-tablet alkali, i-acid toluene.
8. I-Hydroxypropyl methyl cellulose ekusetshenzisweni kwe-putty powder, indima eyinhloko, ingabe iyikhemikhali?
Ku-putty powder, ukuqina, ukugcinwa kwamanzi kanye nokwakhiwa kwemisebenzi emithathu. Ukuqina, i-cellulose ingaqiniswa ibe yi-suspension, ukuze isixazululo sihlale sifana phezulu naphansi njengendima yokulwa nokugeleza. Ukugcinwa kwamanzi: yenza i-putty powder yome kancane, i-calcium empunga esiza ekusebenzeni kokusabela kwamanzi. Ukwakhiwa: ukuthambisa kwe-cellulose, kungenza i-putty powder ibe nokwakhiwa okuhle. I-HPMC ayihlanganyeli kunoma yikuphi ukusabela kwamakhemikhali, kodwa idlala indima yokusekela kuphela.
9. I-hydroxypropyl methyl cellulose iyi-non-ionic cellulose ether, 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 i-contact grey calcium izoba yi-bean curd residue.
10. Yiziphi izinkomba zobuchwepheshe eziyinhloko ze-hydroxypropyl methyl cellulose?
Okuqukethwe kwe-Hydroxypropyl
Okuqukethwe kwe-Methyl
ukujiya
umlotha
Ukwehlisa isisindo okomile
11. Yini ehlobene nokushisa kwejeli kwe-hydroxypropyl methyl cellulose?
Izinga lokushisa lejeli le-HPMC lihlobene nokuqukethwe kwe-methoxyl, uma okuqukethwe kwe-methoxyl kuphansi, izinga lokushisa lejeli liphakeme.
Ubudlelwano be-putty powder engu-12 kanye nobudlelwano be-hydroxypropyl methyl cellulose?
Uma i-HPMC ingagcini kahle amanzi, izobangela impuphu.
13 i-hydroxypropyl methyl cellulose ekusetshenzisweni kwe-putty powder, i-putty powder bubble iyini isizathu?
I-HPMC ku-putty powder, ukuqina, ukugcinwa kwamanzi kanye nokwakhiwa kwezindima ezintathu, imbangela yebhamuza:
1. ) Kufakwa amanzi amaningi kakhulu.
2. )Ingqimba engezansi ayomile, bese uklwebha ungqimba kuyo, okulula futhi ukuyibhamuza.
14. Uyini umehluko phakathi kwe-hydroxypropyl methyl cellulose encibilika ngokushesha emanzini abandayo kanye ne-heat-soluble methyl cellulose enqubweni yokukhiqiza?
Uhlobo lwesisombululo esisheshayo samanzi abandayo se-HPMC lungemva kokwelashwa kobuso be-glyoxal, lufakwa emanzini abandayo ahlakazeka ngokushesha, kodwa angancibiliki ngempela, i-viscosity iyanda, iyancibilika. Uhlobo oluncibilika kalula aluzange luphathwe ubuso nge-glyoxal. Inani le-glyoxal likhulu, ukuhlakazeka kuyashesha, kodwa i-viscosity iyahamba kancane, inani lincane, ngokuphambene nalokho.
15. Kuyini ngamaphunga e-hydroxypropyl methyl cellulose?
I-HPMC ekhiqizwa ngendlela ye-solvent yenziwe nge-toluene kanye ne-isopropyl alcohol. Uma ukugeza kungalungile kakhulu, kuzoba nokunambitheka okusele. (Ukuvuselelwa kwe-neutralization kuyinqubo eyinhloko yephunga)
16. Ungayikhetha kanjani i-hydroxypropyl methyl cellulose efanele ukusetshenziswa okuhlukile?
Impuphu ye-putty: izidingo zokugcina amanzi amaningi, ukuhambisana kahle kokwakhiwa (ibanga elinconywayo: 75AX100000)
Udaka olujwayelekile olusekelwe kusimende: ukugcinwa kwamanzi okuphezulu, ukumelana nokushisa okuphezulu, i-viscosity esheshayo (ibanga elinconywayo: 75AX150000)
Ukusetshenziswa kweglue yokwakha: imikhiqizo esheshayo, ukujiya okuphezulu. (Inombolo yomkhiqizo enconywayo: 75AX200000S)
Udaka lwe-Gypsum: ukugcinwa kwamanzi amaningi, ukuqina okuphakathi nokuphansi, ukuqina okusheshayo (ibanga elinconywayo: 75AX75000)
17. Liyini igama lesidlaliso le-hydroxypropyl methyl cellulose?
I-HPMC noma i-MHPC elibizwa ngokuthi i-hydroxypropyl methyl cellulose, i-cellulose i-hydroxypropyl methyl ether.
18. Uyini umehluko phakathi kwe-hydroxypropyl methyl cellulose kanye ne-MC?
I-MC iyi-methyl cellulose, ikotini elicwengisisiwe ngemuva kokwelashwa nge-alkali, i-methane chloride njenge-ejenti yokushisa, ngokusebenzisa uchungechunge lwezimpendulo futhi yenziwe nge-cellulose ether, izinga elijwayelekile lokushintshana lingu-1.6-2.0, izinga elihlukile lokuncibilika kokushintshana nalo lihlukile, lingelase-non-ionic cellulose ether.
(1) Ukugcinwa kwamanzi kwe-methyl cellulose kuncike enanini layo lokwengeza, i-viscosity, ubuncane bezinhlayiya kanye nezinga lokuncibilika. Ngokuvamile, inani lokwengeza likhulu, ubuncane buncane, i-viscosity likhulu, izinga lokugcinwa kwamanzi liphezulu, inani lokwengeza linethonya elikhulu esilinganisweni sokugcinwa kwamanzi, izinga lobuningi kanye nokugcinwa kwamanzi aliphansi kunobudlelwano, izinga lokuncibilika lincike kakhulu ezingeni lokuguqulwa kobuso kanye nobuncane bezinhlayiya zezinhlayiya ze-cellulose. I-Methyl cellulose kanye ne-hydroxypropyl methyl cellulose kuma-ether amaningana e-cellulose angenhla anezinga eliphezulu lokugcinwa kwamanzi.
(2) I-Methyl cellulose ingancibilikiswa emanzini abandayo, amanzi ashisayo kuzoba nzima ukuwancibilikisa, isixazululo sawo samanzi esiku-pH = 3-12 sizinzile kakhulu, kanti isitashi, njll., kanye nama-surfactants amaningi anokuhambisana okuhle, lapho izinga lokushisa lifinyelela izinga lokushisa le-gelation, kuzoba khona isenzakalo se-gelation.
(3) Izinguquko zokushisa zizothinta kakhulu izinga lokugcina amanzi le-methyl cellulose, ngokuvamile, uma izinga lokushisa liphezulu, kuba kubi kakhulu ukugcinwa kwamanzi. Uma izinga lokushisa le-mortar lidlula ama-degrees angu-40, ukugcinwa kwamanzi kwe-methyl cellulose kuzoba kubi kakhulu, okuthinta kakhulu ukwakheka kwe-mortar.
(4)I-Methyl celluloseinethonya elisobala ekwakhiweni nasekunamatheleni kwe-mortar. Ukunamathela lapha kubhekisela emandleni okunamathela azwayo phakathi kwethuluzi kanye ne-substrate yodonga yisisebenzi, okungukuthi, ukumelana nokusika kwe-mortar. Ukunamathela kukhulu, ukumelana nokusika kwe-mortar kukhulu, amandla adingekayo yizisebenzi enqubweni yokusebenzisa nawo makhulu, kanti ukwakhiwa kwe-mortar kuphansi.
Isikhathi sokuthunyelwe: Ephreli-25-2024