Lesi sihloko ngesimo semibuzo nezimpendulo zomfundi mayelana nolwazi oluhlobene ne-hydroxypropyl methyl cellulose ether, ukuze ube nokuqonda okujulile kwe-HPMC ngesikhathi esifushane, ukuze ukhethe kangcono futhi usebenzise lolu hlobo lwemikhiqizo ekukhiqizeni kwangempela.
1, iyini ukusetshenziswa okuyinhloko kwei-hydroxypropyl methyl cellulose (HPMC)?
I-HPMC isetshenziswa kabanzi ezintweni zokwakha, ezimbozweni, ezitsheni zokwenziwa, ezitsheni zobumba, kwezokwelapha, ekudleni, ezindwangu, kwezolimo, ezimonyweni, egwayi nakwezinye izimboni. I-HPMC ingahlukaniswa ibe: izinga lokwakha, izinga lokudla kanye nezinga lezokwelapha ngokusetshenziswa. Njengamanje, iningi lezinga lokwakha lasekhaya, ebangeni lokwakha, isilinganiso sempuphu ye-putty sikhulu, cishe u-90% usetshenziselwa ukwenza i-putty powder, okusele kusetshenziselwa ukwenza udaka lukasimende kanye neglue.
2, i-hydroxypropyl methyl cellulose (HPMC) ihlukaniswe yaba yiziningana, uyini umehluko ekusetshenzisweni kwayo?
I-HPMC ingahlukaniswa ibe uhlobo lwesisombululo esisheshayo nesishisayo, imikhiqizo esheshayo, emanzini abandayo isakazeka ngokushesha, inyamalale emanzini, ngalesi sikhathi uketshezi alunawo umswakama, ngoba i-HPMC isakazeka nje emanzini, akukho ukuncibilika kwangempela. Cishe imizuzu emi-2, umswakama woketshezi uyanda kancane kancane, kwakha i-colloid ecacile ethambile. Imikhiqizo encibilikayo eshisayo, emanzini abandayo, ingasakazwa ngokushesha emanzini ashisayo, inyamalale emanzini ashisayo, lapho izinga lokushisa lehla liye ezingeni lokushisa elithile, umswakama uvela kancane kancane, kuze kube yilapho kwakheka i-colloid ecacile ethambile. Isixazululo esishisayo singasetshenziswa kuphela ku-putty powder kanye nodaka, ku-glue ewuketshezi kanye nopende, kuzoba khona isenzakalo seqembu, asikwazi ukusetshenziswa. I-Instant Solution Model, Ububanzi Bokusetshenziswa Bumbalwa, Ku-Be Bored With Chicken Powder kanye Nodaka, Futhi Ku-Liquid Glue And Coating, Bonke Bangasebenzisa, Ngaphandle Kokuphi Ukuphikisana.
3, izindlela zokuncibilika ze-hydroxypropyl methyl cellulose (HPMC) zinazo lezo?
– A: Indlela yokuncibilikisa amanzi ashisayo: ngoba i-HPMC ayincibilikisi emanzini ashisayo, ngakho-ke i-HPMC yokuqala ingahlakazeka ngokulinganayo emanzini ashisayo, bese incibilikiswa ngokushesha lapho iphola, izindlela ezimbili ezijwayelekile zichazwa kanje: 1), esitsheni esinamanzi ashisayo adingekayo, bese ishiswa ibe ngu-70℃. Kancane kancane engeza i-hydroxypropyl methylcellulose ngaphansi kokuxubha kancane, i-HPMC yaqala ukuntanta phezu kwamanzi, bese kancane kancane yakha i-slurry, ngaphansi kokuxubha ipholisa i-slurry. 2), engeza inani elidingekayo le-1/3 noma 2/3 amanzi esitsheni, bese ushisisa ibe ngu-70℃, ngokwendlela ye-1), ukuhlakazwa kwe-HPMC, ukulungiswa kwe-slurry yamanzi ashisayo; Bese wengeza inani elisele lamanzi abandayo esitsheni esishisayo, uvuselele bese upholisa ingxube. Indlela yokuxuba i-powder: I-HPMC powder kanye nenani elikhulu lezinye izithako zezinto eziwumpuphu, kuxutshwe kahle ne-blender, ngemva kokufaka amanzi ukuze kuncibilikiswe, i-HPMC ingancibilika ngalesi sikhathi, kodwa hhayi ukuhlangana, ngoba ekhoneni ngalinye elincane, i-HPMC powder encane kuphela, amanzi azoncibilika ngokushesha. – Amabhizinisi okukhiqiza i-putty powder kanye ne-mortar asebenzisa le ndlela. I-Hydroxypropyl METHYL cellulose (HPMC) ISETSHENZISWA NJENGE-ejenti yokujiya kanye ne-ejenti yokugcina amanzi ku-putty powder mortar.
4, kulula futhi kunembile kangakanani ukunquma ikhwalithi ye-hydroxypropyl methyl cellulose (HPMC)?
– Impendulo: (1) ubumhlophe: yize ubumhlophe bungenakunquma ukuthiI-HPMCKuhle ukuyisebenzisa, futhi uma ingezwa enqubweni yokukhiqiza i-ejenti yokwenza mhlophe, kuzothinta ikhwalithi yayo. Kodwa-ke, imikhiqizo emihle iningi layo limhlophe. (2) ubuncane: Ubuncane be-HPMC ngokuvamile bungama-mesh angu-80 kanye nama-mesh angu-100, injongo engaphansi kuka-120, i-Hebei HPMC ikakhulukazi ama-mesh angu-80, uma ubuncane bungcono, ngokuvamile kuba ngcono. (3) ukudluliselwa: i-hydroxypropyl methyl cellulose (HPMC) emanzini, ukwakheka kwe-colloid esobala, ukubona ukudluliselwa kwayo, uma ukudluliselwa kukhulu, kungcono, izinto ezingancibiliki ngaphakathi. Ukuvuleka kwe-reactor eqondile ngokuvamile kuhle, i-reactor evundlile imbi kakhulu, kodwa ayikwazi ukukhombisa ukuthi ikhwalithi yokukhiqizwa kwe-reactor eqondile ingcono kuneyokukhiqizwa kwe-reactor evundlile, ikhwalithi yomkhiqizo inqunywa yizici eziningi. (4) amandla adonsela phansi athile: uma amandla adonsela phansi athile emakhulu, lapho esinda khona kungcono. Kunokubaluleka, ngokuvamile ngoba okuqukethwe kwe-hydroxypropyl kuphezulu, okuqukethwe kwe-hydroxypropyl kuphezulu, khona-ke ukugcinwa kwamanzi kungcono.
5, i-hydroxypropyl methyl cellulose (HPMC) ngenani lempuphu ye-putty?
– Impendulo: I-HPMC ekusetshenzisweni kwangempela komthamo, ngokwesimo sezulu, izinga lokushisa, ikhwalithi yomlotha we-calcium wendawo, ifomula yempuphu ye-putty kanye “nezidingo zamakhasimende zekhwalithi”, futhi kunezindlela ezahlukene. Ngokuvamile, umthamo we-putty omelana namanzi ku-4 kg – 5 kg phakathi. Isibonelo: Impuphu ye-putty yaseBeijing, ikakhulukazi ibeka ama-5 kg; E-Guizhou, iningi lawo lingama-5 kg ehlobo kanye nama-4.5 kg ebusika. Inani lika-Yunnan lincane, ngokuvamile lingama-3 kg -4 kg njalo njalo. Futhi umthamo we-HPMC ku-821 putty ngokuvamile ungama-2 ~ 3 kg.
6, i-hydroxypropyl methyl cellulose (HPMC) ingakanani i-viscosity efanele?
– Impendulo: KHATHAZEKILE NGEMPUDA YENGANE OKUJWAYELEKILE OKUYI-100 IYAQINILE, ISIDINGO ESIKU-MOTAR SIDE KAKHULU, FUMANA AMANDLA OKUSEBENZISA AYI-150 000. Ngaphezu kwalokho, indima ebaluleke kakhulu ye-HPMC ukugcinwa kwamanzi, kulandelwe ukuqina. Ku-putty powder, inqobo nje uma ukugcinwa kwamanzi kukuhle, i-viscosity iphansi (7-80 000), kungenzeka futhi, vele, i-viscosity inkulu, ukugcinwa kwamanzi okuhlobene kungcono, lapho i-viscosity ingaphezu kwe-100 000 000, i-viscosity ayinawo umthelela omkhulu ekugcinweni kwamanzi.
7, i-hydroxypropyl methyl cellulose (HPMC) yiziphi izinkomba zobuchwepheshe eziyinhloko?
A: Okuqukethwe kwe-hydroxypropyl kanye ne-viscosity, okuyizinto abasebenzisi abaningi abakhathazeka ngazo. Okuqukethwe kwe-hydroxypropyl kuphezulu, ukugcinwa kwamanzi ngokuvamile kungcono. Ukuqina, ukugcinwa kwamanzi, ukuhlobana (kodwa hhayi okuphelele) nakho kungcono, kanye ne-viscosity, kungcono ukusebenzisa okunye ku-samente mortar.
8, i-hydroxypropyl methyl cellulose (HPMC) yiziphi izinto zokusetshenziswa eziyinhloko?
– Impendulo: i-hydroxypropyl methyl cellulose (HPMC) yezinto zokusetshenziswa eziyinhloko: ukotini ocolisisiwe, i-chloromethane, i-propylene oxide, ezinye izinto zokusetshenziswa ezikhona, i-tablet alkali, i-acid, i-toluene, i-isopropyl alcohol, njll.
9, I-HPMC ekusetshenzisweni kwe-putty powder, iyini indima eyinhloko, kungakhathaliseki ukuthi i-chemistry?
I-HPMC ku-putty powder, ukuqina, ukugcinwa kwamanzi kanye nokwakhiwa kwezindima ezintathu. Ukuqina: I-Cellulose ingaqiniswa ukuze idlale ukumiswa, ukuze ikhambi ligcine indima efanayo phezulu naphansi, lilenga ekulweni nokugeleza. Ukugcinwa kwamanzi: kwenza i-putty powder yome kancane, ukusabela kwe-calcium yomlotha osizayo ngaphansi kwesenzo samanzi. Ukwakhiwa: I-Cellulose inomphumela wokugcoba, ingenza i-putty powder ibe nokwakhiwa okuhle. I-HPMC ayihlanganyeli kunoma yikuphi ukusabela kwamakhemikhali, idlala indima yokusiza kuphela. I-putty powder eyengeziwe amanzi, odongeni, iyimpendulo yamakhemikhali, ngoba kukhona ukukhiqizwa kwezinto ezintsha, i-putty powder odongeni phansi isuka odongeni, igaywe ibe yi-powder, bese isetshenziswa, ayisekho, ngoba idale into entsha (i-calcium carbonate). Izingxenye eziyinhloko zempuphu ye-calcium empunga yilezi: i-Ca(OH)2, i-CaO kanye nenani elincane lengxube ye-CaCO3, i-CaO+H2O=Ca(OH)2 – i-Ca(OH)2+CO2=CaCO3↓+H2O i-calcium ash emanzini nasemoyeni ngaphansi kwesenzo se-CO2, ukwakheka kwe-calcium carbonate, kanye nokugcinwa kwamanzi kwe-HPMC kuphela, ukusabela okungcono komlotha we-calcium osizayo, okwawo akuzange kuhlanganyele kunoma yikuphi ukusabela.
10, i-HPMC non-ionic cellulose ether, khona-ke iyini i-non-ionic?
A: Ngokuvamile, i-nonionic iyisithako esisemanzini esingayi-ionize. I-ionization inqubo lapho i-electrolyte ihlukaniswa khona ibe ama-ion ashajekile ahamba ngokukhululeka ku-solvent ethile, njengamanzi noma utshwala. Isibonelo, i-sodium chloride (NaCl), usawoti esiwudla nsuku zonke, uyancibilika emanzini bese uyayi-ionize ukuze kukhiqizwe ama-ion e-sodium ahamba ngokukhululeka (Na+) ashajekile kahle kanye nama-ion e-chloride (Cl) ashajekile kabi. Ngamanye amazwi, i-HPMC emanzini ayihlukani nama-ion ashajekile, 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. Uma okuqukethwe kwe-methoxy kuphansi, izinga lokushisa lejeli liphezulu.
12. Ingabe kukhona ubudlelwano phakathi kwempuphu ye-putty ne-HPMC?
– Impendulo: i-putty powder powder kanye nekhwalithi ye-calcium kunobudlelwano obuhle, futhi i-HPMC ayinabo ubuhlobo obuningi kakhulu. Okuqukethwe kwe-calcium ephansi ye-calcium kanye nesilinganiso se-CaO, i-Ca(OH)2 ku-calcium ash akufaneleki, kuzobangela ukwehla kwe-powder. Uma kuhlobene ne-HPMC, khona-ke ukugcinwa kwamanzi kwe-HPMC kubi, kuzobangela nokwehla kwe-powder. Ngezizathu ezithile, sicela ubheke umbuzo 9.
13, uhlobo oluncibilikayo lwamanzi abandayo lwe-hydroxypropyl methylcellulose kanye nohlobo oluncibilikayo olushisayo enqubweni yokukhiqiza, uyini umehluko?
– Uhlobo oluncibilikayo lwamanzi abandayo lwe-HPMC lutholakala ngemva kokwelashwa kobuso be-glyoxal, lufakwa emanzini abandayo lusakazeka ngokushesha, kodwa aluncibiliki ngempela, i-viscosity iyanda, luncibilika. Uhlobo oluncibilika ekushiseni aluzange luphathwe ubuso nge-glyoxal. Umthamo we-glyoxal mkhulu, ukuhlakazeka kuyashesha, kodwa i-viscosity iyahamba kancane, ivolumu incane, ngokuphambene nalokho.
14, i-hydroxypropyl methyl cellulose (HPMC) inephunga lokuthi kwenzekani?
– Impendulo: I-HPMC ekhiqizwa ngendlela ye-solvent yenziwe nge-toluene kanye ne-isopropyl alcohol njengesinyibilikisi. Uma ukuwasha kungalungile kakhulu, kuzoba nokunambitheka okusele.
15, ukusetshenziswa okuhlukile, ungayikhetha kanjani i-hydroxypropyl methyl cellulose (HPMC) efanele?
– Impendulo: Ukusetshenziswa kwempuphu ye-putty: isidingo siphansi, i-viscosity ingu-100,000, kulungile, into ebalulekile ukugcina amanzi engcono. Ukusetshenziswa kwe-mortar: isidingo siphezulu, isidingo si-viscosity ephezulu, i-150,000 kufanele ibe ngcono. Ukusetshenziswa kwe-glue: isidingo semikhiqizo esheshayo, i-viscosity ephezulu.
16, i-hydroxypropyl methylcellulose iyini igama eliyisibizo?
A: I-Hydroxypropyl Methyl Cellulose, isiNgisi: Isifinyezo se-Hydroxypropyl Methyl Cellulose: HPMC noma igama elingelona elithi MHPC: I-Hydroxypropyl Methyl Cellulose; I-Cellulose hydroxypropyl methyl ether; I-Cellulose Hypromellose, i-2-hydroxypropyl methyl I-Cellulose ether. I-Cellulose hydroxypropyl Methyl ether Hyprolose.
17, HPMC ekusetshenzisweni kwempuphu ye-putty, i-putty powder bubble iyini isizathu?
I-HPMC ku-putty powder, ukuqina, ukugcinwa kwamanzi kanye nokwakhiwa kwezindima ezintathu. Ayihlanganyeli kunoma yikuphi ukusabela. Isizathu samabhamuza: 1, amanzi afakwa kakhulu. 2, phansi ayomile, phezulu futhi kukhuhlwe ungqimba, futhi kulula ukukhuhla.
18. Ifomula yempuphu ye-putty yezindonga zangaphakathi nezangaphandle?
– Impendulo: i-putty powder engangeni manzi yodonga lwangaphakathi: 750~ 850KG ye-calcium esindayo, 150~250KG ye-calcium empunga, 4~5KG ye-cellulose ether, kanye ne-1~2KG ye-polyvinyl alcohol powder ingangezwa ngokufanele; I-putty powder yangaphandle yodonga: 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 phakathiI-HPMCfuthiMC?
– I-MC ye-methyl cellulose, ikotini elicwengisisiwe ngemva kokwelashwa nge-alkali, nge-methane chloride njenge-etherification agent, ngokusebenzisa uchungechunge lwezimpendulo kanye ne-cellulose ether. Ngokuvamile, izinga lokushintsha liyi-1.6~2.0, futhi ukuncibilika kuyahlukahluka ngokwezinga lokushintsha. I-non-ionic cellulose ether.
(1) Ukugcinwa kwamanzi kwe-methyl cellulose kuncike enanini lokwengeza, i-viscosity, ubuncane bezinhlayiya kanye nesivinini sokuncibilika. Ngokuvamile kunezela inani elikhulu, ubuncane obuncane, i-viscosity, izinga eliphezulu lokugcinwa kwamanzi. Phakathi kwazo, inani elingeziwe esilinganisweni sokugcinwa kwamanzi linethonya elikhulu kakhulu, i-viscosity kanye nezinga lezinga lokugcinwa kwamanzi alilingani nobudlelwano. Izinga lokuncibilika lincike kakhulu ezingeni lokuguqulwa kobuso kanye nobuncane bezinhlayiya zezinhlayiya ze-cellulose. Ku-ether ye-cellulose engenhla, izinga lokugcinwa kwamanzi le-methyl cellulose kanye ne-hydroxypropyl methyl cellulose liphakeme.
(2) I-Methyl cellulose ingancibilikiswa emanzini abandayo, amanzi ashisayo ancibilikisiwe azobhekana nobunzima, isixazululo sayo samanzi esisezingeni le-pH=3~12 sizinzile kakhulu. Ihambisana kahle nesitashi, i-guanidine gum kanye nama-surfactants amaningi. I-Gelation yenzeka lapho izinga lokushisa lifinyelela izinga lokushisa le-gelation.
(3) Ukushintsha kwezinga lokushisa kuzothinta kakhulu izinga lokugcina amanzi le-methyl cellulose. Ngokuvamile, uma izinga lokushisa liphakeme, kuba kubi kakhulu ukugcinwa kwamanzi. Uma izinga lokushisa le-mortar lidlula u-40℃, ukugcinwa kwamanzi kwe-methyl cellulose kuzoba kubi kakhulu, kuthinte kakhulu ukwakhiwa kwe-mortar.
(4) I-Methyl cellulose inethonya elisobala ekwakhiweni nasekunamatheleni kwe-mortar. Lapha, “ukunamathela” kubhekisela emandleni okunamathela azwayo phakathi kwethuluzi lokufaka isicelo sesisebenzi kanye ne-substrate yodonga, okungukuthi, ukumelana nokusika kwe-mortar. Impahla yokunamathela inkulu, ukumelana nokusika kwe-mortar mkhulu, futhi amandla adingekayo yizisebenzi enkambisweni yokusebenzisa nawo makhulu, ngakho-ke imfanelo yokwakha ye-mortar ayinhle.
Emikhiqizweni ye-cellulose ether, ukunamathela kwe-methyl cellulose kusezingeni eliphakathi. I-HPMC ye-hydroxypropyl methyl cellulose, yenziwe ngokotini ocwengekile ngemuva kokwelashwa kwe-alkalizing, nge-propylene oxide kanye ne-chloromethane njenge-etherifying, ngokusebenzisa uchungechunge lwezimpendulo futhi yenziwe nge-non-ionic cellulose mixed ether. Izinga lokufaka esikhundleni ngokuvamile lingu-1.2 ~ 2.0. Izakhiwo zayo zithinteka yisilinganiso sokuqukethwe kwe-methoxy kanye nokuqukethwe kwe-hydroxypropyl.
(1) i-hydroxypropyl methyl cellulose encibilikayo emanzini abandayo, amanzi ashisayo ancibilikayo azobhekana nobunzima. Kodwa izinga lokushisa layo le-gelation emanzini ashisayo liphakeme kakhulu kunele-methyl cellulose. Ukuncibilika kwe-methyl cellulose emanzini abandayo nakho kuthuthukisiwe kakhulu.
(2) i-viscosity ye-hydroxypropyl methyl cellulose ihlobene nesisindo sayo sama-molecule, kanti isisindo esikhulu sama-molecule yi-viscosity ephezulu. Izinga lokushisa lizothinta ne-viscosity yayo, izinga lokushisa liyakhuphuka, i-viscosity iyancipha. Kodwa-ke, i-viscosity yokushisa okuphezulu iphansi kuneye-methyl cellulose. Isixazululo sizinzile uma sigcinwa ekushiseni kwegumbi.
(3) i-hydroxypropyl methyl cellulose izinzile ku-asidi kanye ne-alkali, futhi isixazululo sayo samanzi sizinzile kakhulu ku-pH=2~12. I-Caustic soda kanye namanzi e-lime awanayo ithonya elikhulu ezimpahleni zayo, kodwa i-alkali ingasheshisa izinga layo lokuncibilika futhi ithuthukise i-viscosity yephini. I-Hydroxypropyl methyl cellulose izinzile kusawoti ojwayelekile, kodwa lapho ukuhlushwa kwesisombululo sikasawoti kuphezulu, i-viscosity yesisombululo se-hydroxypropyl methyl cellulose ivame ukwanda.
(4) Ukugcinwa kwamanzi kwe-hydroxypropyl methyl cellulose kuncike enanini le-added, viscosity, njll., inani elifanayo lesilinganiso sokugcinwa kwamanzi liphakeme kune-methyl cellulose.
(5) i-hydroxypropyl methyl cellulose ingaxutshwa nama-polymer compounds ancibilika emanzini ukuze ibe yisisombululo esifanayo nesinobuthi esiphezulu. Njenge-polyvinyl alcohol, i-starch ether, i-plant gum njalo njalo.
(6) Ukunamathela kwe-hydroxypropyl methyl cellulose ekwakhiweni kwe-mortar kuphakeme kunokwe-methyl cellulose.
(7) i-hydroxypropyl methyl cellulose inokumelana okungcono kwe-enzymatic kune-methyl cellulose, futhi amathuba okuwohloka kwe-enzymatic kwesisombululo sayo aphansi kune-methyl cellulose.
20, ubudlelwano phakathi kwe-viscosity kanye nokushisa kwe-HPMC, okufanele kunakwe ekusetshenzisweni okungokoqobo?
– Impendulo: I-viscosity ye-HPMC ilingana ngokungalingani nezinga lokushisa, okungukuthi, i-viscosity iyanda ngokwehla kwezinga lokushisa. Uma sikhuluma nge-viscosity yomkhiqizo, sisho umphumela wokulinganisa isisombululo sayo samanzi esingu-2% ekushiseni okungama-degrees Celsius angama-20. Ekusetshenzisweni okusebenzayo, ezindaweni ezinomehluko omkhulu wokushisa phakathi kwehlobo nobusika, kufanele kunakwe isincomo sokusebenzisa i-viscosity ephansi ebusika, okusiza kakhulu ekwakheni. Ngaphandle kwalokho, lapho izinga lokushisa liphansi, i-viscosity ye-cellulose izokwanda, lapho kukhuhlwa, umuzwa uzoba nzima. I-viscosity ephakathi:75000-100000 isetshenziswa kakhulu ngesizathu se-putty: ukugcinwa kwamanzi okuhle i-viscosity ephezulu:150000-200000 isetshenziswa kakhulu ezinhlayiyeni ze-polystyrene zokushisa i-mortar iglue powder material kanye nama-glass beads okushisa i-mortar. Isizathu: i-viscosity ephezulu, i-mortar akulula ukuyilahla umlotha nokugeleza, ithuthukise ukwakhiwa. Kodwa ngokuvamile, uma i-viscosity iphakeme, kulapho ukugcinwa kwamanzi kuzoba ngcono khona, ngakho-ke izimboni eziningi ze-dry mortar zibheka izindleko, nge-medium viscosity cellulose (75,000-100000) ukuze ithathe indawo ye-low viscosity cellulose (20,000-40000) ukuze kuncishiswe inani lokwengeza.
Isikhathi sokuthunyelwe: Ephreli-25-2024