1. Iyini ukusetshenziswa okuyinhloko kwe-hydroxypropyl methylcellulose?
I-HPMC isetshenziswa 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 lemithi ngokuya ngokusetshenziswa kwayo.
2. Kunezinhlobo eziningana ze-hydroxypropyl methylcellulose. Uyini umehluko phakathi kwazo?
I-HPMC ingahlukaniswa ngohlobo olusheshayo (isijobelelo somkhiqizo "S") kanye nohlobo oluncibilikayo olushisayo. Imikhiqizo yohlobo olusheshayo isakazeka ngokushesha emanzini abandayo bese inyamalala emanzini. Ngalesi sikhathi, uketshezi aluna-viscosity ngoba i-HPMC isakazeka kuphela emanzini futhi ayinaso isisombululo sangempela. Ngemva kwemizuzu engaba ngu-2 (evuselelayo), i-viscosity yoketshezi iyanda kancane kancane bese kwakheka i-colloid ecacile ethambile. Imikhiqizo encibilikayo eshisayo, emanzini abandayo, ingasakazeka ngokushesha emanzini ashisayo bese inyamalala emanzini ashisayo. Lapho izinga lokushisa lehla liye ezingeni lokushisa elithile (ngokusho kokushisa kwejeli yomkhiqizo), i-viscosity ivela kancane kancane kuze kube yilapho kwakheka i-colloid ecacile nethambile.
3. Yiziphi izindlela zesisombululo se-hydroxypropyl methylcellulose?
1. Wonke amamodeli angangezwa ezintweni ngokuxuba okomile;
2. Kudingeka ifakwe ngqo esixazululweni samanzi esijwayelekile sokushisa. Kungcono ukusebenzisa uhlobo lokusabalala kwamanzi abandayo. Ngemva kokwengeza, ngokuvamile ifinyelela ekujiyeni kungakapheli imizuzu eyi-10-90 (vuselela, vuselela, vuselela)
3. Kumamodeli ajwayelekile, hlanganisa bese uhlakaza ngamanzi ashisayo kuqala, bese ufaka amanzi abandayo ukuze ancibilike ngemva kokuxuba nokupholisa.
4. Uma kwenzeka ukuhlangana noma ukugoqa ngesikhathi sokuncibilika, kungenxa yokuthi ukuxuba akwanele noma imodeli evamile ifakwa ngqo emanzini abandayo. Kuleli qophelo, hlanganisa ngokushesha.
5. Uma amabhamuza ekhiqizwa ngesikhathi sokuncibilika, angashiywa amahora angu-2-12 (isikhathi esithile sincike ekuqineni kwesisombululo) noma asuswe ngokukhipha i-vacuum, ukucindezela, njll., futhi inani elifanele le-ejenti yokuhlanza lingangezwa.
4. Ungahlulela kanjani ikhwalithi ye-hydroxypropyl methylcellulose kalula nangokuqondakalayo?
1. Ubumhlophe. Nakuba ubumhlophe bungenakukwazi ukwahlulela ukuthi i-HPMC ilungile noma cha, futhi ukufaka izinto zokwenza mhlophe ngesikhathi senqubo yokukhiqiza kuzothinta ikhwalithi yayo, imikhiqizo eminingi emihle inobumhlophe obuhle.
2. Ubuncane: Ubuncane be-HPMC ngokuvamile bungama-mesh angu-80 kanye nama-mesh angu-100, ngaphansi kuka-120, uma buncane kungcono.
3. Ukudlulisa ukukhanya: I-HPMC yakha i-colloid ecacile emanzini. Bheka ukudlulisa ukukhanya. Uma ukudlulisa ukukhanya kukhulu, kulapho ukudlulisa ukukhanya kuba ngcono khona, okusho ukuthi kunezinto ezincane ezingancibiliki kuyo. I-reactor eqondile ngokuvamile ilungile, futhi i-reactor eqondile izokhipha okuthile. Kodwa akunakushiwo ukuthi ikhwalithi yokukhiqiza yama-kettle aqondile ingcono kuneyama-kettle aqondile. Kunezici eziningi ezinquma ikhwalithi yomkhiqizo.
4. Amandla adonsela phansi athile: Uma amandla adonsela phansi athile emakhulu, kulapho esinda khona. Uma amandla adonsela phansi athile emakhulu, kulapho okuqukethwe kwe-hydroxypropyl kuphakeme khona. Ngokuvamile, uma okuqukethwe kwe-hydroxypropyl kuphakeme, kulapho ukugcinwa kwamanzi kuthuthuka khona.
5. Ingakanani i-hydroxypropyl methylcellulose esetshenziswa ku-putty powder?
Inani le-HPMC elisetshenziswayo ekusetshenzisweni kwangempela liyahlukahluka kuye ngendawo, ngokuvamile, liphakathi kuka-4-5 kg, kuye ngesimo sezulu, izinga lokushisa, ikhwalithi yomlotha we-calcium wendawo, ifomula yempuphu ye-putty kanye nezidingo zekhwalithi yamakhasimende.
6. Iyini i-viscosity ye-hydroxypropyl methylcellulose?
Impuphu ye-putty ngokuvamile ibiza ama-RMB ayi-100,000, kanti i-mortar inezidingo eziphakeme. Ibiza ama-RMB ayi-150,000 ukuze kube lula ukuyisebenzisa. Ngaphezu kwalokho, umsebenzi obaluleke kakhulu we-HPMC ukugcina amanzi, kulandelwe ukujiya. Kumpuphu ye-putty, inqobo nje uma ukugcinwa kwamanzi kukuhle futhi ukuqina kuphansi (7-8), kungenzeka futhi. Vele, uma ukuqina kukhulu, kungcono ukugcinwa kwamanzi. Uma ukuqina kungaphezu kwama-100,000, ukuqina akunawo umthelela omkhulu ekugcinweni kwamanzi.
7. Yiziphi izinkomba zobuchwepheshe eziyinhloko ze-hydroxypropyl methylcellulose?
Okuqukethwe kwe-Hydroxypropyl
Okuqukethwe kwe-Methyl
ukujiya
Umlotha
ukwehlisa isisindo okomile
8. Yiziphi izinto eziyinhloko zokusetshenziswa kwe-hydroxypropyl methylcellulose?
Izinto zokusetshenziswa eziyinhloko ze-HPMC: ukotini ocolisisiwe, i-methyl chloride, i-propylene oxide, ezinye izinto zokusetshenziswa, i-caustic soda, kanye ne-acid toluene.
9. Ukusetshenziswa kanye nomsebenzi oyinhloko we-hydroxypropyl methylcellulose ku-putty powder, ingabe iyikhemikhali?
Ku-putty powder, idlala imisebenzi emithathu emikhulu: ukuqina, ukugcinwa kwamanzi kanye nokwakhiwa. Ukuqina kungenza i-cellulose ibe nkulu futhi idlale indima yokumisa, igcine isisombululo silingana phezulu naphansi futhi ivimbele ukugoba. Ukugcinwa kwamanzi: Yenza i-putty powder yome kancane futhi isize i-calcium empunga ukuthi isabele ngaphansi kwesenzo samanzi. Ukusebenza kahle: I-Cellulose inomphumela wokugcoba, okwenza i-putty powder ibe nokusebenza kahle. I-HPMC ayihlanganyeli kunoma yikuphi ukusabela kwamakhemikhali futhi idlala indima yokusekela kuphela.
10. I-Hydroxypropyl methylcellulose iyi-non-ionic cellulose ether, ngakho-ke yiluphi uhlobo olungeyona ionic?
Ngokuvamile, izinto ezingasebenzi azihlanganyeli ekusabeleni kwamakhemikhali.
I-CMC (i-carboxymethylcellulose) iyi-cationic cellulose futhi izophenduka ibe yi-tofu dregs uma itholakala ku-calcium ash.
11. Lihlobene kanjani izinga lokushisa lejeli le-hydroxypropyl methylcellulose?
Izinga lokushisa lejeli le-HPMC lihlobene nokuqukethwe kwayo kwe-methoxyl. Uma okuqukethwe kwe-methoxyl kuphansi, kulapho izinga lokushisa lejeli liphezulu khona.
12. Ingabe kukhona ubudlelwano phakathi kwe-putty powder ne-hydroxypropyl methylcellulose?
Lokhu kubalulekile! I-HPMC ayinawo amanzi amaningi futhi izobangela ukuqhuma.
13. Uyini umehluko enqubweni yokukhiqiza phakathi kwesisombululo samanzi abandayo nesisombululo samanzi ashisayo se-hydroxypropyl methylcellulose?
Uhlobo oluncibilika emanzini abandayo lwe-HPMC lusakazeka ngokushesha emanzini abandayo ngemva kokwelashwa kobuso nge-glyoxal, kodwa empeleni aluncibiliki. I-viscosity iyakhuphuka, okungukuthi, iyancibilika. Uhlobo oluncibilika olushisayo aluphathwa ngobuso nge-glyoxal. I-Glyoxal inkulu ngobukhulu futhi isakazeka ngokushesha, kodwa inobuthi obuhamba kancane kanye nomthamo omncane, kanye nokuphikisana nalokho.
14. Liyini iphunga le-hydroxypropyl methylcellulose?
I-HPMC ekhiqizwa ngendlela yokunyibilikisa yenziwe nge-toluene kanye ne-isopropyl alcohol njengezinyibilikisi. Uma ingagezwanga kahle, kuzoba nephunga elisele. (Ukungawukhiphi umoya kanye nokuvuselela kabusha kuyinqubo ebalulekile yephunga)
15. Ungayikhetha kanjani i-hydroxypropyl methylcellulose efanele ukusetshenziswa okuhlukile?
Impuphu ye-putty: izidingo zokugcina amanzi amaningi kanye nokulula kokwakha okuhle (uphawu olunconywayo: 7010N)
Udaka olujwayelekile olusekelwe kusimende: ukugcinwa kwamanzi amaningi, ukumelana nokushisa okuphezulu, ukujiya okusheshayo (ibanga elinconywayo: HPK100M)
Ukusetshenziswa kwe-glue yokwakha: umkhiqizo osheshayo, ukujiya okuphezulu. (Umkhiqizo onconywayo: HPK200MS)
Udaka lwe-Gypsum: ukugcinwa kwamanzi amaningi, ukuthambeka okuphakathi nendawo, ukuthambeka okusheshayo (ibanga elinconywayo: HPK600M)
16. Liyini elinye igama le-hydroxypropyl methylcellulose?
I-HPMC noma i-MHPC yaziwa nangokuthi i-hydroxypropyl methylcellulose kanye ne-hydroxypropyl methylcellulose ether.
17. Ukusetshenziswa kwe-hydroxypropyl methylcellulose ku-putty powder. Yini ebangela i-putty powder ibe yi-foam?
I-HPMC idlala indima ezintathu ezinkulu ku-putty powder: ukuqina, ukugcinwa kwamanzi kanye nokwakhiwa. Izizathu zamabhamuza yilezi:
1. Faka amanzi amaningi kakhulu.
2. Uma iphansi lingomile, ukuklwebha olunye ungqimba phezulu kuzobangela amabhamuza kalula.
18. Uyini umehluko phakathi kwe-hydroxypropyl methylcellulose kanye ne-MC:
I-MC, i-methyl cellulose, yenziwe ngokotini ocolisisiwe ngemva kokwelashwa nge-alkali, kusetshenziswa i-methane chloride njenge-etherifying agent, kanye nochungechunge lwezimpendulo zokukhiqiza i-cellulose ether. Izinga elijwayelekile lokushintshana lingu-1.6-2.0, kanti ukuncibilika kwamazinga ahlukene okushintshana nakho kuhlukile. I-non-ionic cellulose ether.
(1) Ukugcinwa kwamanzi kwe-methylcellulose kuncike enanini layo lokwengeza, i-viscosity, ubuncane bezinhlayiya kanye nezinga lokuncibilika. Ngokuvamile, inani lokwengeza likhulu, ubuncane buncane, i-viscosity iphezulu, kanti izinga lokugcinwa kwamanzi liphezulu. Inani lokwengeza linethonya elikhulu esilinganisweni sokugcinwa kwamanzi, futhi i-viscosity ayinalutho oluhlobene nezinga lokugcinwa kwamanzi. Izinga lokuchithwa lincike kakhulu ezingeni lokuguqulwa kobuso kanye nobuncane bezinhlayiya zezinhlayiya ze-cellulose. Phakathi kwama-ether e-cellulose angenhla, i-methylcellulose kanye ne-hydroxypropylmethylcellulose zinamazinga aphezulu okugcinwa kwamanzi.
(2) I-Methyl cellulose ingancibilikiswa emanzini abandayo, kodwa izobhekana nobunzima ekuncibilikeni emanzini ashisayo. Isixazululo sayo samanzi sizinzile kakhulu ebangeni le-pH=3-12, futhi sihambisana kahle nesitashi kanye nama-surfactants amaningi. Lapho izinga lokushisa lifika kujeli Lapho izinga lokushisa le-gelation landa, kuzokwenzeka i-gelation.
(3) Izinguquko zokushisa zizothinta kakhulu izinga lokugcina amanzi le-methylcellulose. Ngokuvamile, uma izinga lokushisa liphakeme, izinga lokugcina amanzi liba libi kakhulu. Uma izinga lokushisa le-mortar lidlula ama-degrees angu-40, ukugcinwa kwamanzi kwe-methylcellulose kuzowohloka kakhulu, kuthinte kakhulu ukwakhiwa kwe-mortar.
(4) I-Methylcellulose inomthelela omkhulu ekwakhiweni nasekunamatheleni kwe-mortar. Ukunamathela lapha kubhekisela ekunamatheleni okuzwakalayo phakathi kwethuluzi lokufaka isicelo sesisebenzi kanye nezinto eziyisisekelo sodonga, okungukuthi, ukumelana nokusika kwe-mortar. Ukunamathela kuphakeme, ukumelana nokusika kwe-mortar kuphakeme, futhi amandla adingekayo abasebenzi ngesikhathi besebenzisa nawo aphezulu, ngakho-ke ukusebenza kokwakha kwe-mortar kuphansi.
Isikhathi sokuthunyelwe: Jan-31-2024