1, ikuphi ukusetshenziswa okuyinhloko kwe-hydroxypropyl methyl cellulose (HPMC)?
I-HPMC isetshenziswa kabanzi ezintweni zokwakha, ezinengilazi, izinsalela zokwenziwa, izitsha zobumba, imithi, ukudla, izindwangu, ezolimo, izimonyo, ugwayi nezinye izimboni. I-HPMC ingahlukaniswa: Ibanga lokwakha, ibanga lokudla kanye nebanga lezokwelapha ngokusetshenziswa. Njengamanje, iningi lebanga lokwakhiwa kwasekhaya, ebangeni lokwakha, isilinganiso se-putty powder sikhulu, cishe i-90% isetshenziselwa ukwenza i-putty powder, enye isetshenziselwa ukwenza udaka lukasimende neglue.
2, i-hydroxypropyl methyl cellulose (HPMC) ihlukaniswe yaba amaningana, uyini umehluko ekusetshenzisweni kwayo?
I-HPMC ingahlukaniswa ibe uhlobo lwesixazululo esisheshayo nesishisayo, imikhiqizo esheshayo, emanzini abandayo ahlakazekile ngokushesha, anyamalale emanzini, ngalesi sikhathi uketshezi alunayo i-viscosity, ngoba i-HPMC isanda kuhlakazwa emanzini, akukho ukuchithwa kwangempela. Cishe imizuzu emi-2, i-viscosity yoketshezi ikhula kancane kancane, yakha i-viscous colloid esobala. Imikhiqizo encibilikayo eshisayo, emanzini abandayo, ingahlakazwa ngokushesha emanzini ashisayo, inyamalale emanzini ashisayo, lapho izinga lokushisa lehla liye ezingeni elithile lokushisa, i-viscosity ibonakala kancane, kuze kube yilapho kwakheka i-viscous colloid ebonakalayo. Isixazululo esishisayo singasetshenziswa kuphela ku-putty powder nodaka, ku-glue ye-liquid kanye nopende, kuyoba khona into yeqembu, ayikwazi ukusetshenziswa. Imodeli Esheshayo YESIXAZULULO, UBUHLUNGU BOKUSEBENZA LUMBALWA NGOKUBANZI, NGOKUBHEKISWA YIMPUSHA INGANE NOMDALA, KANYE NEGLUE EYINQWANE KANYE NE-COATING, KONKE ANGAKUSEBENZISA, NGAPHANDLE KOKUQINISEKA.
3, izindlela zokuncibilika kwe-hydroxypropyl methyl cellulose (HPMC) zinalezo?
- A: Indlela yokuchithwa kwamanzi ashisayo: ngenxa yokuthi i-HPMC ayincibiliki emanzini ashisayo, ngakho-ke i-HPMC yasekuqaleni ingahlakazwa ngokulinganayo emanzini ashisayo, bese ihlakazwa ngokushesha lapho ipholisa, izindlela ezimbili ezijwayelekile zichazwa kanje: 1), esitsheni singene esitsheni. inani lamanzi ashisayo adingekayo, futhi ashiselwe cishe ku-70 ℃. Kancane kancane engeza i-hydroxypropyl methylcellulose ngaphansi kokunyakazisa kancane, i-HPMC yaqala ukuntanta phezu kwamanzi, bese kancane kancane yakha i-slurry, ngaphansi kokunyakazisa ukupholisa i-slurry. 2), engeza inani elidingekayo lamanzi angu-1/3 noma angu-2/3 esitsheni, nokushisa ku-70 ℃, ngokwendlela ye-1), ukuhlakazwa kwe-HPMC, ukulungiswa kwamanzi ashisayo slurry; Bese wengeza inani elisele lamanzi abandayo ku-slurry eshisayo, gubungula futhi upholise ingxube. Indlela yokuxuba i-powder: I-HPMC powder kanye nenani elikhulu lezinye izithako ze-powdery ezibonakalayo, ezixubene kahle ne-blender, ngemva kokungeza amanzi ukuze zincibilike, khona-ke i-HPMC ingancibilika ngalesi sikhathi, kodwa hhayi ukuhlangana, ngoba ikhoneni ngalinye elincane, kuphela i-HPMC powder encane. , amanzi azoncibilika ngokushesha. - I-Putty powder kanye namabhizinisi okukhiqiza udaka asebenzisa le ndlela. IHydroxypropyl METHYL cellulose (HPMC) ISETSHENZISWA NJENGE-ejenti ejiyayo kanye ne-ejenti egcina amanzi odakeni lwe-putty powder.
4, kulula kangakanani futhi kulula kangakanani ukunquma ikhwalithi ye-hydroxypropyl methyl cellulose (HPMC)?
– Impendulo: (1) ubumhlophe: nakuba ubumhlophe bungakwazi ukunquma ukuthi i-HPMC ilungele ukusetshenziswa yini, futhi uma yengezwa kunqubo yokukhiqiza ye-ejenti emhlophe, izothinta ikhwalithi yayo. Nokho, imikhiqizo emihle ngokuvamile imhlophe. (2) ubucwebe: Ubucwebe be-HPMC ngokuvamile bungama-mesh angu-80 kanye ne-mesh engu-100, inhloso encane engu-120, i-Hebei HPMC ikakhulukazi i-80 mesh, ukucoleka kokucoleka, ngokuvamile kuba ngcono. (3) ukudlulisa: i-hydroxypropyl methyl cellulose (HPMC) emanzini, ukwakheka kwe-colloid esobala, bheka ukudluliselwa kwayo, ukudluliswa okukhulu, okungcono, okokusebenza okuncane okungancibiliki ngaphakathi. Ukufinyeleleka kwe-reactor eqondile ngokuvamile kuhle, i-reactor evundlile yimbi kakhulu, kodwa ayikwazi ukukhombisa ukuthi ikhwalithi yokukhiqizwa kwe-reactor eqondile ingcono kunaleyo yokukhiqizwa kwe-reactor evundlile, ikhwalithi yomkhiqizo inqunywa izici eziningi. 4 Kunokubaluleka, ngokuvamile ngenxa yokuthi okuqukethwe kwe-hydroxypropyl kuphezulu, okuqukethwe kwe-hydroxypropyl kuphezulu, khona-ke ukugcinwa kwamanzi kungcono.
5, i-hydroxypropyl methyl cellulose (HPMC) ngenani le-putty powder?
- Impendulo: I-HPMC ekusetshenzisweni kwangempela komthamo, ngemvelo yesimo sezulu, izinga lokushisa, ikhwalithi yendawo yomlotha we-calcium, ifomula ye-putty powder kanye "nezidingo zekhwalithi zekhasimende", futhi kukhona okuhlukile. Ngokuvamile, isilinganiso se-putty esimelana namanzi ku-4 kg - 5 kg phakathi. Isibonelo: I-Beijing putty powder, ikakhulukazi ibeka ama-5 kg; E-Guizhou, iningi lazo lingama-5 kg ehlobo kanye no-4.5 kg ebusika. Inani likaYunnan lincane, ngokuvamile li-3 kg -4 kg njalonjalo. Futhi umthamo we-HPMC ku-821 putty ngokuvamile u-2~3 kg.
6, i-hydroxypropyl methyl cellulose (HPMC) ingakanani i-viscosity efanele?
– Impendulo: YIBA nesithukuthezi NGEMPUVA YINGANE EJWAYELEKILE IZINKULUNGWANE EZIYI-100 KULUNGILE, ISIDINGO EMORTAR SIDE KANYE, UFUNA IKHONO LEZINKULUNGWANE EZIYI-150 LOKULISEBENZISA. Ngaphezu kwalokho, indima ebaluleke kakhulu ye-HPMC ukugcinwa kwamanzi, okulandelwa ukuqina. Ku-putty powder, inqobo nje uma ukugcinwa kwamanzi kuhle, i-viscosity iphansi (izinkulungwane ezingu-7-80), kungenzeka futhi, yebo, i-viscosity inkulu, ukugcinwa kwamanzi okuhlobene kungcono, lapho i-viscosity ingaphezu Izinkulungwane eziyi-100, i-viscosity inethonya elincane ekugcinweni kwamanzi.
7, i-hydroxypropyl methyl cellulose (HPMC) yiziphi izinkomba zobuchwepheshe eziyinhloko?
A: Okuqukethwe kwe-Hydroxypropyl kanye ne-viscosity, okuyizinto abasebenzisi abaningi abakhathazeke ngakho. Okuqukethwe kwe-Hydroxypropyl kuphezulu, ukugcinwa kwamanzi ngokuvamile kungcono. I-viscosity, ukugcinwa kwamanzi, isihlobo (kodwa hhayi ngokuphelele) nayo ingcono, futhi i-viscosity, odakeni lukasimende sebenzisa kangcono okunye.
8, i-hydroxypropyl methyl cellulose (HPMC) izinto zokusetshenziswa eziyinhloko ziyini?
- Impendulo: i-hydroxypropyl methyl cellulose (HPMC) yezinto zokusetshenziswa eziyinhloko: ukotini ocolile, i-chloromethane, i-propylene oxide, ezinye izinto zokusetshenziswa, ithebhulethi ye-alkali, i-asidi, i-toluene, i-isopropyl alcohol, njll.
I-9, i-HPMC ekusetshenzisweni kwe-putty powder, iyiphi indima eyinhloko, kungakhathaliseki ukuthi i-chemistry?
I-HPMC ku-putty powder, ukuqina, ukugcinwa kwamanzi kanye nokwakhiwa kwezindima ezintathu. Ukuqina: I-Cellulose ingajiywa ukuze idlale ukumiswa, ukuze isisombululo sokugcina iyunifomu phezulu naphansi indima efanayo, ukugeleza kwe-anti kulenga. Ukugcinwa kwamanzi: yenza i-putty powder yome kancane, ukusabela komlotha we-calcium ngaphansi kwesenzo samanzi. Ukwakhiwa: I-Cellulose inomphumela wokugcoba, ingenza i-putty powder ibe nokwakhiwa okuhle. I-HPMC ayibambi iqhaza kunoma yikuphi ukusabela kwamakhemikhali, idlala indima yokusiza kuphela. I-putty powder engeza amanzi, odongeni, ukusabela kwamakhemikhali, ngoba kukhona isizukulwane sezinto ezintsha, i-putty powder odongeni phansi odongeni, igaywe ibe yimpushana, bese isetshenziswa, ayisekho, ngoba isungule izinto ezintsha (i-calcium carbonate). Izingxenye eziyinhloko zempushana ye-calcium empunga yilezi: I-Ca(OH)2, i-CaO kanye nenani elincane lengxube ye-CaCO3, i-CaO+H2O=Ca(OH)2 - Ca(OH)2+CO2=CaCO3↓+H2O umlotha we-calcium emanzini. kanye nomoya ngaphansi kwesenzo se-CO2, ukwakheka kwe-calcium carbonate, kanye ne-HPMC kuphela ukugcinwa kwamanzi, i-calcium ash ash yokusabela kangcono, eyakhe ayizange ihlanganyele kunoma yikuphi ukusabela.
10, HPMC non-ionic cellulose ether, khona-ke yini engeyona ionic?
IMP: Ngokuvamile, i-nonionic iyinto emanzini engenzi i-ionize. I-ionization inqubo lapho i-electrolyte ihlukaniswa khona ibe ama-ion ashajwayo ahamba ngokukhululeka entweni ethile encibilikayo, njengamanzi noma utshwala. Isibonelo, i-sodium chloride (NaCl), usawoti esiwudla nsuku zonke, uncibilika emanzini bese u-ionize ukukhiqiza ama-ion e-sodium ahamba mahhala (Na+) ashajwa kahle kanye nama-chloride ion (Cl) ashajwa kabi. Ngamanye amazwi, i-HPMC emanzini ayihlukanisi kuma-ion ashajiwe, kodwa ikhona njengama-molecule.
11, izinga lokushisa lejeli le-hydroxypropyl methylcellulose futhi lihlobene nani?
- Impendulo: Izinga lokushisa lejeli le-HPMC lihlobene nokuqukethwe kwayo kwe-methoxy. Ukuncipha kokuqukethwe kwe-methoxy, izinga lokushisa lejeli liphezulu.
12. Ingabe bukhona ubuhlobo phakathi kwe-putty powder ne-HPMC?
- Impendulo: i-putty powder powder kanye nekhwalithi ye-calcium inobuhlobo obuhle, futhi i-HPMC ayinabo ubuhlobo obuningi. Okuqukethwe kwe-calcium ephansi kwe-calcium kanye nengxenye ye-CaO, i-Ca(OH)2 emlotheni we-calcium ayifanelekile, izobangela ukwehla kwempushana. Uma kunento yokwenza ne-HPMC, khona-ke ukugcinwa kwamanzi kwe-HPMC kubi, kuzophinde kubangele ukwehla kwempushana. Ngezizathu ezithile, sicela ubheke umbuzo 9
13, i-hydroxypropyl methylcellulose uhlobo oluncibilikayo lwamanzi abandayo kanye nohlobo oluncibilikayo olushisayo enqubweni yokukhiqiza, uyini umehluko?
- A :Amanzi abandayo e-HPMC uhlobo oluncibilikayo lungemva kokwelashwa kwendawo ye-glyoxal, efakwe emanzini abandayo ahlakazeke ngokushesha, kodwa angancibiliki ngempela, i-viscosity up, iyancibilika. Uhlobo oluncibilikayo lokushisa aluzange luphathwe nge-glyoxal. Umthamo we-glyoxal mkhulu, ukuhlakazeka kuyashesha, kodwa i-viscosity ihamba kancane, ivolumu incane, ngokuphambene nalokho.
14, i-hydroxypropyl methyl cellulose (HPMC) inephunga lalokho okwenzekayo?
– Impendulo: I-HPMC ekhiqizwa ngendlela ye-solvent yenziwe nge-toluene ne-isopropyl alcohol njenge-solvent. Uma ukugeza kungalungile kakhulu, kuzoba khona ukunambitheka okusele.
15, ukusetshenziswa okuhlukile, ungayikhetha kanjani i-hydroxypropyl methyl cellulose (HPMC) efanele?
- Impendulo: Ukusetshenziswa kwe-putty powder: imfuneko iphansi, i-viscosity iyizinkulungwane eziyi-100, kulungile, into ebalulekile ukugcina amanzi angcono. Ukusetshenziswa kodaka: imfuneko iphakeme, imfuneko i-viscosity ephezulu, izinkulungwane eziyi-150 kufanele zibe ngcono. Ukusetshenziswa kweglue: badinga imikhiqizo esheshayo, i-viscosity ephezulu.
16, i-hydroxypropyl methylcellulose siyini isiteketiso?
A: Hydroxypropyl Methyl Cellulose, English: Hydroxypropyl Methyl Cellulose isifinyezo: HPMC noma MHPC alias: Hydroxypropyl Methyl Cellulose; i-cellulose hydroxypropyl methyl ether; I-Cellulose Hypromellose, i-2-hydroxypropyl methyl Cellulose ether. I-Cellulose hydroxypropyl Methyl ether Hyprolose.
I-17, i-HPMC ekusetshenzisweni kwe-putty powder, i-putty powder bubble yisiphi isizathu?
I-HPMC ku-putty powder, ukuqina, ukugcinwa kwamanzi kanye nokwakhiwa kwezindima ezintathu. Ukungahlanganyeli kunoma yikuphi ukusabela. Isizathu Bubbles: 1, amanzi abeke kakhulu. 2, phansi akuwona owomile, phezulu bese ukuklebhula ungqimba, futhi lula bubble.
18. I-Putty powder formula yezindonga zangaphakathi nezangaphandle?
- Impendulo: i-putty powder engavimbeli amanzi odongeni lwangaphakathi: 750 ~ 850KG ye-calcium esindayo, i-150 ~ 250KG ye-calcium empunga, i-4 ~ 5KG ye-cellulose ether, kanye ne-1 ~ 2KG ye-polyvinyl alcohol powder ingangezwa ngokufanelekile; Impushana ye-putty yangaphandle: usimende omhlophe 350KG, i-calcium esindayo 500-550kg, i-calcium empunga 100-150kg, i-latex powder 8-12kg, i-cellulose ether 5KG, i-wood fiber 3KG.
19. Uyini umehluko phakathi kwe-HPMC ne-MC?
– I-MC ye-methyl cellulose, ukotini ocolisisiwe ngemva kokwelashwa kwe-alkali, nge-methane chloride njenge-etherification agent, ngochungechunge lokusabela ne-cellulose ether. Ngokuvamile, izinga lokushintsha lingu-1.6~2.0, futhi ukuncibilika kuyahlukahluka ngezinga lokushintsha. I-non-ionic cellulose ether.
(1) Ukugcinwa kwamanzi kwe-methyl cellulose kuncike enanini layo lokungezwa, i-viscosity, ukucoleka kwezinhlayiyana kanye nesivinini sokuhlakazeka. Ngokuvamile engeza inani elikhulu, inhlawulo encane, i-viscosity, izinga eliphezulu lokugcinwa kwamanzi. Phakathi kwazo, inani elingeziwe esilinganisweni sokugcinwa kwamanzi linomthelela omkhulu kakhulu, i-viscosity kanye nezinga lokugcinwa kwamanzi alihambisani nobuhlobo. Izinga lokuncibilika lincike kakhulu kwidigri yokuguqulwa kwendawo kanye nokucoleka kwezinhlayiyana zezinhlayiya ze-cellulose. Ku-ether ye-cellulose engenhla, i-methyl cellulose ne-hydroxypropyl methyl cellulose izinga lokugcinwa kwamanzi liphezulu.
(2) I-Methyl cellulose ingancibilika emanzini abandayo, amanzi ashisayo ancibilikisiwe azohlangabezana nobunzima, isixazululo sawo samanzi ebangeni le-pH = 3 ~ 12 sizinzile kakhulu. Inokuhambisana okuhle nesitashi, i-guanidine gum kanye nama-surfactants amaningi. I-Gelation kwenzeka lapho izinga lokushisa lifinyelela izinga lokushisa le-gelation.
(3) Ukushintsha kwezinga lokushisa kuzothinta kakhulu izinga lokugcinwa kwamanzi e-methyl cellulose. Ngokuvamile, lapho izinga lokushisa liphezulu, kuba kubi nakakhulu ukugcinwa kwamanzi. Uma izinga lokushisa lodaka lidlula ama-40℃, ukugcinwa kwamanzi kwe-methyl cellulose kuzoba kubi kakhulu, kuphazamise kakhulu ukwakhiwa kodaka.
(4) I-Methyl cellulose inethonya elisobala ekwakhiweni nasekubambeleleni kodaka. Lapha, "ukunamathela" kubhekisela emandleni okunamathela azwakala phakathi kwethuluzi lesicelo lesisebenzi kanye ne-substrate yodonga, okungukuthi, ukumelana kwe-shear kodaka. Impahla yokunamathisela inkulu, ukumelana kwe-shear kodaka kukhulu, futhi amandla adingwa abasebenzi ngesikhathi sokusebenzisa nawo makhulu, ngakho-ke impahla yokwakha yedaka impofu.
Emikhiqizweni ye-cellulose ether, ukunamathela kwe-methyl cellulose kusezingeni eliphakathi. I-HPMC ye-hydroxypropyl methyl cellulose, yenziwe ngokotini ocolisisiwe ngemva kokwelashwa kwe-alkalization, nge-propylene oxide ne-chloromethane njenge-ejenti ye-etherifying, ngochungechunge lokusabela futhi eyenziwe nge-non-ionic cellulose exutshwe i-ether. I-substitution degree ngokuvamile i-1.2 ~ 2.0. Izakhiwo zayo zithinteka ngenani lokuqukethwe kwe-methoxy nokuqukethwe kwe-hydroxypropyl.
(1) i-hydroxypropyl methyl cellulose encibilika emanzini abandayo, amanzi ashisayo ancibilikisiwe azohlangabezana nobunzima. Kodwa izinga lokushisa layo le-gelation emanzini ashisayo liphakeme kakhulu kunalelo le-methyl cellulose. I-solubility ye-methyl cellulose emanzini abandayo nayo ithuthukiswa kakhulu.
(2) i-viscosity ye-hydroxypropyl methyl cellulose ihlobene nesisindo sayo samangqamuzana, futhi isisindo samangqamuzana esikhulu yi-viscosity ephezulu. Ukushisa kuzophinde kuthinte i-viscosity yayo, izinga lokushisa liyakhuphuka, i-viscosity iyancipha. Kodwa-ke, i-viscosity yokushisa okuphezulu iphansi kunaleyo ye-methyl cellulose. Isixazululo sizinzile uma sigcinwe ekamelweni lokushisa.
(3) i-hydroxypropyl methyl cellulose izinzile ku-asidi ne-alkali, futhi isisombululo sayo esinamanzi sizinzile kakhulu kububanzi be-pH=2~12. I-Caustic soda namanzi e-lime ayinawo umthelela omkhulu ezindaweni zayo, kodwa i-alkali ingasheshisa izinga lokuqedwa kwayo futhi ithuthukise i-viscosity yephini. IHydroxypropyl methyl cellulose inozinzo kusawoti ojwayelekile, kodwa lapho ukugcwala kwesixazululo sikasawoti kuphezulu, i-viscosity yesixazululo se-hydroxypropyl methyl cellulose ivame ukukhula.
(4) Ukugcinwa kwamanzi kwe-hydroxypropyl methyl cellulose kuncike enanini lokwengezwa kwayo, i-viscosity, njll., inani elifanayo lokugcinwa kwamanzi lingaphezulu kune-methyl cellulose.
(5) i-hydroxypropyl methyl cellulose ingaxutshwa nezinhlanganisela ze-polymer ezincibilika emanzini ukuze ibe iyunifomu, isixazululo se-viscosity esiphezulu. Okufana ne-polyvinyl alcohol, isitashi ether, i-plant gum nokunye.
(6) Ukunamathela kwe-hydroxypropyl methyl cellulose ekwakhiweni kodaka kungaphezulu kwalokho kwe-methyl cellulose.
(7) i-hydroxypropyl methyl cellulose inokumelana kangcono ne-enzymatic kune-methyl cellulose, futhi kungenzeka ukucekelwa phansi kwe-enzymatic yesisombululo sayo kungaphansi kwe-methyl cellulose.
20, ubudlelwano phakathi kwe-viscosity nezinga lokushisa le-HPMC, okufanele linakwe ekusebenzeni okusebenzayo?
– Impendulo: I-viscosity ye-HPMC ihambisana ngokuphambene nezinga lokushisa, okusho ukuthi, i-viscosity iyanda ngokuncipha kwezinga lokushisa. Uma sikhuluma nge-viscosity yomkhiqizo, sisho umphumela wokulinganisa isisombululo sawo samanzi esingu-2% endaweni yokushisa engu-20 degrees Celsius. Ekusetshenzisweni okungokoqobo, ezindaweni ezinomehluko omkhulu wokushisa phakathi kwehlobo nobusika, kufanele kuqashelwe isincomo sokusebenzisa i-viscosity ephansi kakhulu ebusika, evumelana kakhulu nokwakhiwa. Uma kungenjalo, lapho izinga lokushisa liphansi, i-viscosity ye-cellulose izokhula, lapho i-scraping, ukuzwa kuyoba nzima. I-viscosity emaphakathi :75000-100000 isetshenziselwa ikakhulukazi isizathu se-putty: ukugcinwa kahle kwamanzi i-viscosity ephezulu :150000-200000 isetshenziselwa ikakhulukazi izinhlayiya ze-polystyrene ezishisayo zokufakwa kwe-thermal mortar glue powder material kanye nobuhlalu bengilazi udaka lokufakwa okushisayo. Isizathu: i-viscosity ephezulu, udaka akulula ukulahla umlotha nokugeleza ukulenga, ukuthuthukisa ukwakhiwa. Kodwa uma sikhuluma nje, ukuphakama kwe-viscosity, ukugcinwa kwamanzi kuzoba ngcono, izimboni eziningi zodaka ezomile zicabangela izindleko, ne-medium viscosity cellulose (75,000-100000) esikhundleni se-viscosity cellulose ephansi (20,000-40000) ukunciphisa inani le-viscosity cellulose. ukwengeza.
Isikhathi sokuthumela: Feb-05-2024