1, ikuphi ukusetshenziswa okuyinhloko kwe-hydroxypropyl methyl cellulose (HPMC)?
I-HPMCisetshenziswa kabanzi ezintweni zokwakha, ezinengilazi, izinhlaka 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 kanye nohlobo lwesixazululo esishisayo, imikhiqizo yohlobo lwesixazululo esheshayo, ehlakazekile ngokushesha emanzini abandayo, inyamalala emanzini, ngalesi sikhathi uketshezi alunayo i-viscosity, ngoba i-HPMC isanda kuhlakazeka emanzini, akukho ukuhlakazeka 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 lokushisa elithile, 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?
Indlela yokuchithwa kwamanzi ashisayo: Ngenxa yokuthi i-HPMC ayincibiliki emanzini ashisayo, ngakho-ke i-HPMC yakuqala ingahlakazwa ngokulinganayo emanzini ashisayo, bese incibilika ngokushesha lapho isipholile, izindlela ezimbili ezijwayelekile zichazwa kanje:
1) Faka inani elidingekayo lamanzi ashisayo esitsheni bese ushisa kuze kufike 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.I-Hydroxypropyl methyl cellulose (HPMC) isetshenziswa njenge-ejenti yokuqina kanye ne-ejenti egcina amanzi odakeni lwe-putty powder.
4, kulula kangakanani futhi kulula kangakanani ukunquma ikhwalithi ye-hydroxypropyl methyl cellulose (HPMC)?
(1) ubumhlophe: nakuba ubumhlophe bungakwazi ukunquma ukuthi i-HPMC kulula ukuyisebenzisa 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.
4Kunokubaluleka, 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?
I-HPMC ekusetshenzisweni kwangempela komthamo, ngesimo sezulu, izinga lokushisa, izinga lomlotha we-calcium wendawo, i-putty powder formula kanye "nezidingo zekhwalithi zekhasimende", futhi zinezihlukile.Ngokuvamile, phakathi kwamakhilogremu amane namahlanu.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.
6, i-hydroxypropyl methyl cellulose (HPMC) ingakanani i-viscosity efanele?
KHAWULELWA YIMPUSHA YENGANE IJWAYELEKILE IZINKULUNGWANE EZIYI-100, 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?
Okuqukethwe kwe-Hydroxypropyl kanye ne-viscosity, abasebenzisi abaningi bakhathazekile ngalezi zinkomba ezimbili.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?
IHydroxypropyl methyl cellulose (HPMC) izinto zokusetshenziswa eziyinhloko: ukotini ocolisisiwe, i-chloromethane, i-propylene oxide, ezinye izinto zokusetshenziswa, amaphilisi e-alkali, i-asidi, i-toluene, i-isopropyl alcohol nokunye.
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 enezela amanzi, odongeni, ukusabela kwamakhemikhali, ngoba kukhona isizukulwane sezinto ezintsha, i-putty powder odongeni phansi odongeni, igaywe ibe yimpushana, bese isetshenziswa, ayisekho, ngoba iye yakha i-putty powder. 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?
Ngokuvamile, i-nonionic yinto engafaki ioni emanzini.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?
Izinga lokushisa lejeli le-HPMC lihlobene nokuqukethwe kwayo kwe-methoxy, ukwehla kokuqukethwe kwe-methoxy ↓, kukhuphuka izinga lokushisa lejeli ↑.
12. Ingabe bukhona ubuhlobo phakathi kwe-putty powder ne-HPMC?
I-Putty powder powder kanye nekhwalithi ye-calcium inobudlelwane 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?
Uhlobo oluncibilikayo lwe-HPMC lwamanzi abandayo lungemva kokwelashwa kwe-glyoxal ebusweni, emanzini abandayo ahlakazeka ngokushesha, kepha 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?
I-HPMC ekhiqizwa ngendlela yokuncibilikisa 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?
I-APPLICATION OF putty powder: imfuneko iphansi, i-viscosity iyizinkulungwane eziyi-100, kulungile, into ebalulekile ukugcina amanzi kangcono.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?
IHydroxypropyl Methyl Cellulose, isiNgisi: Hydroxypropyl Methyl Cellulose isifinyezo: HPMC noma MHPC alias: Hydroxypropyl Methyl Cellulose;i-cellulose hydroxypropyl methyl ether;I-Cellulose hydroxypropyl Methyl ether Hypromellose, 2-hydroxypropylmethyl 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 awomile, phezulu bese ukuklebhula ungqimba, futhi kulula bubble.
18. I-Putty powder formula yezindonga zangaphakathi nezangaphandle?
I-putty powder yodonga lwangaphakathi: 800KG we-calcium esindayo kanye ne-150KG ye-calcium empunga (isitashi se-ether, uhlaza oluhlanzekile, inhlabathi ye-peng, i-citric acid ne-polyacrylamide ingangezwa ngokufanele)
I-putty powder yangaphandle: usimende 350KG i-calcium esindayo 500KG isihlabathi se-quartz 150KG i-latex powder 8-12kg i-cellulose ether 3KG isitashi ether 0.5kg i-wood fiber 2KG
19. Uyini umehluko phakathi kwe-HPMC ne-MC?
I-MC iyi-methyl cellulose, ukotini ocolisisiwe ngemva kokwelashwa kwe-alkali, nge-methane chloride njenge-ejenti ye-etherification, ngochungechunge lokusabela ukwenza i-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 nasekunamatheleni 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.
Yini okufanele inakwe ekusetshenzisweni okungokoqobo kobudlelwano phakathi kwe-viscosity nezinga lokushisa le-HPMC?
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 saso 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 ikakhulukazi esetshenziselwa i-putty
Isizathu: ukugcinwa kahle kwamanzi
I-viscosity ephezulu :150000-200000 isetshenziselwa ikakhulukazi izinhlayiya ze-polystyrene ezishisayo zokufaka udaka lwempushana kanye nobuhlalu bengilazi udaka lokufakwa okushisayo.
Isizathu: i-viscosity ephezulu, udaka akulula ukulahla, ukugeleza 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: Sep-14-2022