1, iyini ukusetshenziswa okuyinhloko kwe-hydroxypropyl methyl cellulose (HPMC)?
Impendulo:I-HPMCisetshenziswa 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 ngokwendlela esetshenziswa ngayo. Okwamanje okwenziwe ekhaya ikakhulukazi izinga lokwakha, ezingeni lokwakha, inani lempuphu ye-putty likhulu kakhulu, cishe u-90% usetshenziselwa ukwenza i-putty powder, okusele kusetshenziselwa ukwenza i-samente mortar kanye ne-glue.
2, i-hydroxypropyl methyl cellulose (HPMC) ihlukaniswe ngezinhlobo eziningana, uyini umehluko phakathi kokusetshenziswa kwayo?
Impendulo: I-HPMC ingahlukaniswa ibe imikhiqizo esheshayo neyokuncibilika kokushisa, imikhiqizo esheshayo, emanzini abandayo ihlakazeka ngokushesha, inyamalale emanzini, ngalesi sikhathi uketshezi alunawo ungqimba, ngoba i-HPMC ihlakazeka nje emanzini, akukho ukuncibilika kwangempela. Cishe imizuzu emi-2, ungqimba loketshezi luyanda kancane kancane, lwakha i-colloid ecacile ethambile. Imikhiqizo encibilika ekushiseni, ekuhlanganisweni kwamanzi abandayo, ingaba emanzini ashisayo, ihlakazeke ngokushesha, inyamalale emanzini ashisayo, kuze kube yilapho izinga lokushisa lehla liye ekushiseni okuthile, ungqimba luvela kancane kancane, kuze kube yilapho kwakheka i-colloid ecacile ethambile. Uhlobo oluncibilika ekushiseni lungasetshenziswa kuphela ku-putty powder kanye nodaka, ku-glue ewuketshezi kanye nodaka, kungavela isenzakalo se-agglomeration, alukwazi ukusetshenziswa. Imodeli yokuncibilika okusheshayo, ububanzi bokusetshenziswa bumbalwa, ku-be bored with child powder and mortar, futhi ku-glue ewuketshezi kanye nodaka, konke kungasetshenziswa, awunawo umthetho.
3, izindlela zokuncibilikisa i-hydroxypropyl methyl cellulose (HPMC) zinazo lezo?
– impendulo: indlela yokuncibilikisa amanzi ashisayo: ngoba i-HPMC ayincibilikisi emanzini ashisayo, ngakho-ke i-HPMC yokuqala ingahlakazeka ngokulinganayo emanzini ashisayo, bese incibilika ngokushesha lapho iphola, izindlela ezimbili ezijwayelekile zichazwa kanje:
1) Gcwalisa isitsha ngamanzi ashisayo amaningi ngangokunokwenzeka bese usifudumeza cishe ku-70℃. I-Hydroxypropyl methyl cellulose ifakwa kancane kancane ngaphansi kokuxubha kancane, bese i-HPMC intanta phezu kwamanzi, bese kancane kancane yakha i-slurry, epholiswa ngaphansi kokuxubha.
2) Faka ingxenye yesithathu noma ingxenye yesithathu yamanzi adingekayo esitsheni bese uyishisa ku-70°C. Hlakaza i-HPMC ngokwendlela yoku-1) ukulungiselela i-slurry yamanzi ashisayo; Bese ufaka amanzi abandayo asele ku-slurry yamanzi ashisayo bese upholisa ingxube ngemva kokuyixuba.
Indlela yokuxuba i-powder: I-HPMC powder kanye nenani elikhulu lezinye izithako ze-powder, zixutshwe ngokuphelele ne-blender, bese ufaka amanzi ukuze zincibilike, ngalesi sikhathi i-HPMC ingancibilika, hhayi ukuhlangana, ngoba ikhona ngalinye elincane, i-HPMC powder encane kuphela, amanzi azoncibilika ngokushesha. – Abakhiqizi be-Putty powder kanye ne-mortar basebenzisa le ndlela. [I-Hydroxypropyl methyl cellulose (HPMC) isetshenziswa njenge-ejenti yokujiya kanye ne-ejenti yokugcina amanzi ku-putty powder mortar.
4, indlela yokunquma ikhwalithi ye-hydroxypropyl methyl cellulose (HPMC) elula futhi enembile?
Impendulo: (1) ubumhlophe: yize ubumhlophe bungenakunquma ukuthi i-HPMC ilungile yini, futhi uma ingezwa enqubweni yokukhiqiza i-whitener, izothinta ikhwalithi yayo. Kodwa-ke, imikhiqizo eminingi emihle inobumhlophe obuhle. (2) ubucwebe: ubucwebe be-HPMC ngokuvamile bungama-mesh angu-80 kanye nama-mesh angu-100, ngaphansi kwenhloso engu-120, i-Hebei HPMC ikakhulukazi ama-mesh angu-80, uma ubucwebe buncane, ngokuvamile, kungcono. (3) ukudlulisa: i-hydroxypropyl methyl cellulose (HPMC) emanzini, ukwakheka kwe-colloid esobala, bheka ukudlulisa kwayo, lapho ukudlulisa kukhulu kungcono, izinto ezingancibiliki ngaphakathi zincane. Ukudlulisa kwe-reactor eqondile ngokuvamile kuhle, kanti okwe-reactor evundlile kubi kakhulu, kodwa akusho ukuthi ikhwalithi yokukhiqizwa kwe-reactor evundlile ingcono kuneye-reactor evundlile. Kunezici eziningi zokunquma ikhwalithi yomkhiqizo. (4) Isilinganiso: lapho isilinganiso sikhulu, lapho isisindo siphezulu kungcono. Kunokukhulu, ngoba okuqukethwe ngaphakathi kwesisekelo se-hydroxyl propyl kuvame ukuba phezulu, okuqukethwe kwesisekelo se-hydroxyl propyl kuphezulu, okuvikela amanzi ukuze afune okungcono.
5, i-hydroxypropyl methyl cellulose (HPMC) viscosity ifaneleka kakhulu?
– impendulo: ukukhathala ngempuphu yengane kulungile ngokuvamile izinkulungwane eziyi-100, ezinye zinde kunezidingo ku-mortar, zifuna ikhono lokusebenzisa izinkulungwane eziyi-150. Ngaphezu kwalokho, i-HPMC iyindima ebaluleke kakhulu yokugcina amanzi, kulandelwe ukuqina. Ku-putty powder, inqobo nje uma ukugcina amanzi kukuhle, i-viscosity iphansi (7-80,000), kungenzeka futhi, vele, i-viscosity inkulu, ukugcinwa kwamanzi okuhlobene kungcono, lapho i-viscosity ingaphezu kwezinkulungwane eziyi-100, i-viscosity yokugcinwa kwamanzi ayiningi.
6, i-hydroxypropyl methyl cellulose (HPMC) yiziphi izinkomba zobuchwepheshe eziyinhloko?
Impendulo: Okuqukethwe kwe-hydroxypropyl kanye ne-viscosity, abasebenzisi abaningi bayakhathalela lezi zinkomba ezimbili. Okuqukethwe kwe-hydroxypropyl kuphezulu, ukugcinwa kwamanzi ngokuvamile kungcono. Ukuqina, ukugcinwa kwamanzi, isihlobo (kodwa hhayi ngokuphelele) nakho kungcono, kanye ne-viscosity, i-cement mortar kungcono ukuyisebenzisa.
7, i-hydroxypropyl methyl cellulose (HPMC) yiziphi izinto zokusetshenziswa eziyinhloko?
Impendulo: izinto zokusetshenziswa eziyinhloko ze-hydroxypropyl methyl cellulose (HPMC): ukotini ocolisisiwe, i-chloromethane, i-propylene oxide, ezinye izinto zokusetshenziswa, i-tablet alkali, i-acid, i-toluene, i-isopropyl alcohol njalo njalo.
8, HPMC ekusetshenzisweni kwe-putty powder, indima eyinhloko, ukuthi ngabe kuvela i-chemistry?
Impendulo: I-HPMC ku-putty powder, ukuqina, amanzi kanye nokwakhiwa kwezindima ezintathu. Ukuqina: i-cellulose ingaqiniswa ibe yi-suspension, ukuze isixazululo sihlale sifana phezulu naphansi indima yokulenga okulwa nokugeleza. Ukugcinwa kwamanzi: yenza i-putty powder yome kancane, i-calcium eyisizayo empunga 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. I-putty powder namanzi, odongeni, kuyindlela yokusabela kwamakhemikhali, ngenxa yokukhiqizwa kwezinto ezintsha, udonga lwe-putty powder luyehla lusuka odongeni, lugaywe lube yi-powder, bese lusetshenziswa, alulungile, ngoba seludale into entsha (i-calcium carbonate). Ukwakheka okuyinhloko kwempuphu ye-calcium empunga kuyingxube ye-Ca(OH)2,CaO kanye nenani elincane le-CaCO3,CaO+H2O=Ca(OH)2 — Ca(OH)2+CO2=CaCO3↓+H2O I-calcium empunga emanzini nasemoyeni ngaphansi kwesenzo se-CO2, i-calcium carbonate, kanye namanzi e-HPMC kuphela, okusiza ukusabela okungcono kwe-calcium empunga, eyayo ayizange ihlanganyele kunoma yikuphi ukusabela.
9. I-HPMC ether ye-cellulose engeyona i-ionic, ngakho-ke iyini i-non-ionic?
A: Ngokuvamile, ama-non-ion ayizinto ezingayi-ion emanzini. I-ionization ukuhlukaniswa kwe-electrolyte ibe ama-ion ashajekile ahamba ngokukhululeka ku-solvent ethile, njengamanzi noma utshwala. Isibonelo, usawoti esiwudla nsuku zonke — i-sodium chloride (NaCl) iyancibilika emanzini bese iyayi-ion ukuze ikhiqize ama-ion e-sodium ahamba ngokukhululeka (Na+) ane-chaji enhle kanye nama-ion e-chloride (Cl) ane-chaji engalungile. Okusho ukuthi, i-HPMC emanzini ayihlukani nama-ion ashajekile, kodwa ikhona njengama-molecule.
10. Yini ehlobene nokushisa kwejeli kwe-hydroxypropyl methyl cellulose?
– Impendulo: Izinga lokushisa lejeliI-HPMCkuhlobene nokuqukethwe kwe-methoxyl, lapho okuqukethwe kwe-methoxyl kuphansi ↓, kulapho izinga lokushisa lejeli liphakama khona.
11, i-putty powder powder kanye ne-HPMC akukho buhlobo?
Impendulo: i-putty powder drop powder ikakhulukazi kanye nekhwalithi ye-ash calcium inobuhlobo obukhulu kakhulu, futhi i-HPMC ayinabo ubuhlobo obukhulu kakhulu. Okuqukethwe kwe-calcium ephansi ye-gray calcium kanye nesilinganiso esingafanele se-CaO kanye ne-Ca(OH)2 ku-gray calcium kuzobangela ukwehla kwe-powder. Uma kunobudlelwano obuncane ne-HPMC, khona-ke ukugcinwa kwamanzi kwe-HPMC kubi, nakho kuzobangela i-powder.
12, i-hydroxypropyl methyl cellulose, amanzi abandayo ancibilikayo futhi ancibilikayo ashisayo enqubweni yokukhiqiza, umehluko uyini?
– Impendulo: Uhlobo lwesisombululo esisheshayo samanzi abandayo i-HPMC lungemva kokwelashwa kobuso be-glyoxal, lufakwa emanzini abandayo ahlakazeka ngokushesha, kodwa aluncibiliki 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.
13, iphunga le-hydroxypropyl methyl cellulose (HPMC) linjani?
– Impendulo: I-HPMC ekhiqizwa ngendlela ye-solvent yenziwe nge-toluene kanye ne-isopropyl alcohol. Uma ukuwasha kungekuhle kakhulu, kuzoba nokunambitheka okusele.
14, ukusetshenziswa okuhlukile, ungayikhetha kanjani i-hydroxypropyl methyl cellulose (HPMC) efanele?
– impendulo: cela ukukhathala ngokufaka impuphu yengane: isidingo siphansi, i-viscosity izinkulungwane eziyi-100, kulungile, kubalulekile ukuvikela amanzi ukuze ube seduze. Ukufaka udaka: izidingo eziphakeme, izidingo ze-viscosity ephezulu, izinkulungwane eziyi-150 ukuze ube ngcono. Ukufaka iglue: isidingo semikhiqizo esheshayo, i-viscosity ephezulu.
15. Iyini igama eliyisibongo le-hydroxypropyl methyl cellulose?
– IMPENDULO: I-Hydroxypropyl Methyl Cellulose, efinyeziwe njenge-HPMC noma i-MHPC, noma i-Hydroxypropyl Methyl Cellulose; I-Cellulose hydroxypropyl methyl ether; I-Hypromellose, i-Cellulose, i-2-hydroxypropyl methyl I-Cellulose ether.
16. I-HPMC ekusetshenzisweni kwempuphu ye-putty, i-putty powder bubble iyini isizathu?
Impendulo: I-HPMC ku-putty powder, ukuqina, amanzi kanye nokwakhiwa kwezindima ezintathu. Ayihlanganyeli kunoma yikuphi ukusabela. Izimbangela zama-bubbles: 1, amanzi amaningi kakhulu. 2, phansi ayomile, phezulu kwengqimba yokuklwebheka, futhi kulula ukuyibhamuza.
17. Uyini umehluko phakathi kwe-HPMC ne-MC?
– Impendulo: I-MC iyi-methyl cellulose, eyenziwe nge-cellulose ether ngokusebenzisa uchungechunge lwezimpendulo nge-methane chloride njenge-etherifying agent ngemva kokuba ukotini ocwengisisiwe uphathwe nge-alkali. Ngokuvamile, izinga lokushintsha liyi-1.6~2.0, futhi ukuncibilika kuyahlukahluka ngokwezinga lokushintsha. Ingeyama-nonionic cellulose ether.
(1) Ukugcinwa kwamanzi kwe-methyl cellulose kuncike enanini layo lokwengeza, i-viscosity, ubuncane bezinhlayiya kanye nezinga lokuncibilika. Ngokuvamile ukwengeza inani elikhulu, ubuncane obuncane, i-viscosity, izinga lokugcinwa kwamanzi liphezulu. Phakathi kwazo, inani le-additive linethonya elikhulu ekugcinweni kwamanzi, futhi i-viscosity ayilingani nokugcinwa kwamanzi. Izinga lokuncibilika lincike kakhulu ezingeni lokuguqulwa kobuso kanye nobuncane bezinhlayiya zezinhlayiya ze-cellulose. Kuma-ether amaningana e-cellulose angenhla, izinga lokugcinwa kwamanzi le-methyl cellulose kanye ne-hydroxypropyl methyl cellulose liphakeme.
(2) I-Methyl cellulose iyancibilika emanzini abandayo, okunzima ukuncibilika emanzini ashisayo. Isixazululo sayo samanzi sizinzile kakhulu ngaphakathi kwe-pH=3~12. 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, okuthinta kakhulu ukwakheka kwe-mortar.
(4) I-Methyl cellulose inethonya elisobala ekwakhiweni nasekunamatheleni kwe-mortar. Igama elithi “Adhesion” lapha libhekisela ekunamatheleni okuzwakala yisisebenzi phakathi kwethuluzi kanye ne-substrate yodonga, okungukuthi ukumelana nokusika kwe-mortar. Ukunamathela kukhulu, ukumelana nokusika kwe-mortar kukhulu, amandla adingekayo yizisebenzi enkambisweni yokusebenzisa nawo makhulu, kanti ukwakhiwa kwe-mortar kuphansi. Emikhiqizweni ye-cellulose ether, ukunamathela kwe-methyl cellulose kusezingeni eliphakathi.
I-HPMC ye-hydroxypropyl methyl cellulose, ihlungwa ngokotini ngemva kokwelashwa nge-alkali, nge-propylene oxide kanye ne-chloromethane njenge-ejenti yokushisa, ngokusebenzisa uchungechunge lwezimpendulo futhi yenziwe nge-non-ionic cellulose mixed ether. Izinga lokushintshana ngokuvamile lingu-1.2 ~ 2.0. Izakhiwo zayo ziyahlukahluka ngokwesilinganiso sokuqukethwe kwe-methoxy kanye ne-hydroxypropyl.
(1) I-Hydroxypropyl methyl cellulose incibilika kalula emanzini abandayo, okunzima ukuncibilika emanzini ashisayo. Kodwa-ke, izinga lokushisa layo le-gelation emanzini ashisayo liphakeme ngokusobala kunele-methyl cellulose. Ukuncibilika kwe-methyl cellulose emanzini abandayo nakho kuthuthukiswe kakhulu.
(2) I-viscosity ye-hydroxypropyl methyl cellulose ihlobene nesisindo sayo sama-molecule, futhi uma isisindo sama-molecule siphakeme, i-viscosity iyanda. Izinga lokushisa lithinta ne-viscosity. I-viscosity iyancipha njengoba izinga lokushisa likhuphuka. Kodwa i-viscosity yayo umphumela wokushisa okuphezulu uphansi kunowe-methyl cellulose. Isixazululo sizinzile uma sigcinwa ekushiseni kwegumbi.
(3) I-Hydroxypropyl methyl cellulose izinzile ku-asidi kanye nesisekelo, futhi isixazululo sayo samanzi sizinzile kakhulu ku-pH=2~12. I-Caustic soda kanye namanzi e-lime awanawo umthelela omkhulu ezimpahleni zayo, kodwa i-alkali ingasheshisa izinga layo lokuncibilika futhi ithuthukise i-viscosity. I-Hydroxypropyl methyl cellulose izinzile ku-salts ejwayelekile, kodwa lapho ukuhlushwa kwesisombululo sikasawoti kuphezulu, i-viscosity yesisombululo se-hydroxypropyl methyl cellulose ivame ukwanda.
(4) Ukugcinwa kwamanzi kwe-hydroxypropyl methyl cellulose kuncike kumthamo wayo kanye nokuthamba kwayo, futhi izinga lokugcinwa kwamanzi kwe-hydroxypropyl methyl cellulose liphakeme kunele-methyl cellulose ngesilinganiso esifanayo.
(5) I-Hydroxypropyl methyl cellulose ingaxutshwa nama-polymer compounds ancibilikayo emanzini ukuze ibe yisisombululo esifanayo nesinobuthi esiphezulu. Njenge-polyvinyl alcohol, i-starch ether, i-vegetable glue njalo njalo.
(6) Ukunamathela kwe-hydroxypropyl methyl cellulose ekwakhiweni kwe-mortar kuphakeme kunokwe-methyl cellulose.
(7) I-Hydroxypropyl methyl cellulose inokumelana okungcono kwe-enzyme kune-methyl cellulose, futhi amathuba okuwohloka kwe-enzyme yesisombululo sayo aphansi kune-methyl cellulose.
18. Yini okufanele inakwe ekusetshenzisweni okungokoqobo kobudlelwano phakathi kwe-viscosity kanye nokushisa kwe-HPMC?
Impendulo: UKUQINISEKA kweI-HPMCilingana ngokungalingani nokushisa, okungukuthi, i-viscosity iyanda ngokwehla kwezinga lokushisa. Uma sikhuluma nge-viscosity yomkhiqizo, sikhuluma nge-viscosity engu-2% yomkhiqizo emanzini kuma-degrees Celsius angu-20.
Ekusetshenzisweni okungokoqobo, ezindaweni ezinomehluko omkhulu wokushisa phakathi kwehlobo nobusika, kufanele kuqashelwe ukuthi kunconywa ukusebenzisa i-viscosity ephansi ebusika, okuyinto evumelana kakhulu nokwakhiwa. Ngaphandle kwalokho, uma izinga lokushisa liphansi, i-viscosity ye-cellulose izokwanda, futhi uma ikhuhla, umuzwa uzoba nzima.
I-viscosity ephakathi nendawo: 75000-100000 esetshenziswa kakhulu kwi-putty.
Isizathu: Ukugcinwa kwamanzi okuhle.
I-viscosity ephezulu:150000-200000 isetshenziswa kakhulu ku-polystyrene particle insulation mortar kanye ne-vitrified beads insulation mortar.
Isizathu: ukujiya okuphezulu, udoti awulula ukuwulahla, ukugeleza kwamanzi kuyalenga, kuthuthukisa ukwakhiwa.
Kodwa ngokuvamile, uma i-viscosity iphakeme, kulapho ukugcinwa kwamanzi kuba ngcono khona, ngakho-ke izimboni eziningi ze-dry mortar, uma kucatshangelwa izindleko, zisebenzisa i-medium viscosity cellulose (75000-100000) ukuze zithathe indawo ye-medium viscosity cellulose (20000-40000) ukuze zinciphise inani lokwengeza.
Isikhathi sokuthunyelwe: Ephreli-26-2024