I-Hydroxypropyl Methylcellulose HPMC, eyaziwa nangokuthi i-Cellulose ether, i-polymer yokwenziwa, encibilika emanzini etholakala ku-cellulose.Yenziwa ngokushintsha i-cellulose yemvelo, okuyingxenye eyinhloko yesakhiwo sezitshalo, ngochungechunge lwezinqubo zamakhemikhali.
I-Industrial grade hydroxypropyl methylcellulose ihlukaniswa yi-viscosity.Ngokujwayelekile asetshenziswa amabanga alandelayo (ngokwe-viscosity).
I-viscosity ephansi: I-400 isetshenziselwa ikakhulukazi udaka lokuzilinganisa, kodwa ngokuvamile lingeniswa kwamanye amazwe.Isizathu: i-viscosity ephansi, nakuba ukugcinwa kwamanzi kumpofu, kodwa ukulinganisa kuhle, ukuminyana kodaka kuphezulu.
I-viscosity emaphakathi nephezulu: 20000-70000 isetshenziswa kakhulu ekunamatheliseni amathayela, i-ejenti ye-caulking, udaka olungazweli ukuqhekeka, udaka lwe-thermal insulation bonding, njll. Izizathu: ukusebenza kahle, amanzi amancane, kanye nokuminyana kodaka oluphezulu.
Ikuphi ukusetshenziswa okuyinhloko kwe-hydroxypropyl methylcellulose (HPMC)?
I-HPMCisetshenziswa kabanzi ezintweni zokwakha, ezinengilazi, izinhlaka zokwenziwa, izitsha zobumba, imithi, ukudla, izindwangu, ezolimo, izimonyo, ugwayi nezinye izimboni.I-HPMC ingahlukaniswa: ukwakha, ukudla kanye nemithi.Njengamanje, iningi lamabhilidi akhiqizwa ekhaya asezingeni le-architectural.Ebangeni lokwakha, inani le-putty powder likhulu kakhulu, cishe i-90% isetshenziselwa ukwenza i-putty powder, kanti enye isetshenziswa njengodaka lukasimende neglue.
Kunezinhlobo ezimbalwa ze-hydroxypropyl methylcellulose (HPMC).Uyini umehluko ekusebenziseni kwabo?
I-HPMCingahlukaniswa ngemikhiqizo encibilika ngokushesha futhi eshiswe, encibilika ngokushesha.Lapho ihlakazeka ngokushesha emanzini abandayo, iyanyamalala emanzini.Ngalesi sikhathi, uketshezi alunayo i-viscosity ngoba i-HPMC ihlakazekile emanzini kuphela futhi akukho ukuchithwa kwangempela.Cishe imizuzu emi-2, i-viscosity yoketshezi kancane kancane yaba nkulu, yakha i-viscous colloid esobala.Umkhiqizo wohlobo lwe-hot-melt, esimweni samanzi abandayo, ungahlakazwa ngokushesha emanzini ashisayo futhi unyamalale emanzini ashisayo.Lapho izinga lokushisa lehla lifinyelela ezingeni elithile lokushisa, i-viscosity ibonakala kancane kancane kuze kube yilapho kwakheka i-viscous colloid ebonakalayo.Uhlobo oluncibilikisiwe olushisayo lungasetshenziswa kuphela ku-putty powder nodaka.Ku-glue ye-liquid nopende, kuzoba nesenzakalo se-clumping, esingeke sisetshenziswe.Itholakala ezinhlobonhlobo zezinhlelo zokusebenza, ku-putty powder nodaka, kanye nama-glues awuketshezi nama-coatings.Azikho contraindications.
Yiziphi izindlela zokuchithwa kwe-hydroxypropyl methylcellulose (HPMC)?
Indlela yokuchithwa kwamanzi ashisayo: Njengoba i-HPMC ingancibilikisiwe emanzini ashisayo, i-HPMC yokuqala ingahlakazwa ngokulinganayo emanzini ashisayo bese incibilika ngokushesha ngesikhathi sokupholisa.Izindlela ezimbili ezijwayelekile zichazwe kanje: 1), zibekwe esitsheni Faka inani elidingekayo lamanzi ashisayo nokushisa cishe ku-70°C.IHydroxypropyl methylcellulose yanezelwa kancane kancane ngokunyakazisa kancane, futhi i-HPMC yantanta phezu kwamanzi, kwase kwakheka udaka kancane kancane, futhi i-slurry yapholiswa ngokushukumisa.I-2) Ukwengeza i-1/3 noma i-2/3 yenani elidingekayo lamanzi emkhunjini nokushisa ku-70 ° C, ukuhlakaza i-HPMC ngokusho kwe-1) ukulungiselela udaka lwamanzi ashisayo;bese wengeza inani elisele lamanzi abandayo emanzini ashisayo Ku-slurry, ingxube ipholile ngemva kokugqugquzela.Indlela yokuxuba i-powder: i-HPMC powder ixubene nenani elikhulu lezinye izinto eziyimpuphu, ixutshwe kahle ne-blender, bese ichithwa ngamanzi.Ngalesi sikhathi, i-HPMC ingahlakazwa ngaphandle kokuhlanganiswa, ngoba ikhona elincane ngalinye line-HPMC encane kuphela.Impushana izoncibilika ngokushesha lapho ithintana namanzi.– Le ndlela isetshenziswa abakhiqizi be-putty powder kanye nodaka.I-Hydroxypropyl methylcellulose (HPMC) isetshenziswa njenge-thickener kanye ne-ejenti egcina amanzi odakeni lwe-putty.
Ungahlulela kanjani ikhwalithi ye-hydroxypropyl methylcellulose (HPMC) kalula nangendlela enembile?
(1) Ubumhlophe: Nakuba ubumhlophe bungakwazi ukunquma ukuthi i-HPMC kulula ukuyisebenzisa yini, futhi uma yengezwa kusikhanyisi phakathi nenqubo yokukhiqiza, izothinta ikhwalithi yayo.Nokho, imikhiqizo emihle ngokuvamile imhlophe.(2) Ubuhle: Ubucwebe be-HPMC ngokuvamile buba ne-80 mesh kanye ne-100 mesh, kanye ne-120 mesh mincane.Ubuhle obuhle, bungcono ngokujwayelekile.(3) Ukudluliselwa: Faka i-hydroxypropyl methylcellulose (HPMC) emanzini ukuze wenze i-colloid esobala, futhi ubheke ukubonakala kwayo.I-transmittance engcono, indaba engancibiliki kancane..I-reactor eqondile inokungena kahle, futhi i-reactor evundlile yimbi kakhulu, kodwa akusho ukuthi ikhwalithi ye-reactor eqondile ingcono kuneketela.Izinga lomkhiqizo linqunywa izici eziningi.(4) Amandla adonsela phansi athile: Lapho amandla adonsela phansi athile emakhulu, kuba nesisindo esikhudlwana.Isilinganiso sikhulu, ngokuvamile ngoba okuqukethwe kweqembu le-hydroxypropyl kuphezulu, futhi okuqukethwe kweqembu le-hydroxypropyl kuphezulu, ukugcinwa kwamanzi kungcono.
Iyini inani le-hydroxypropyl methylcellulose (HPMC) ku-putty powder?
Inani le-HPMC yebanga lokwakhaesetshenziselwa izicelo ezisebenzayo ihlukahluka ngesimo sezulu, izinga lokushisa, izinga le-calcium yomlotha wendawo, ifomula ye-putty powder kanye "nekhwalithi edingekayo kumakhasimende".Ngokuvamile, phakathi kuka-4 kg no-5 kg.Isibonelo: indawo ebandayo ye-putty powder, iningi libeka ama-5 kg;Indawo eshisayo ivame ukuba ngu-5 kg ehlobo kanye no-4.5 kg ebusika.
Iyini i-viscosity ye-hydroxypropyl methylcellulose (HPMC)?
I-wall putty powder ngokuvamile iyi-100,000, futhi udaka olomile luyadingeka ukuba lube phezulu.Kudingeka ukusebenzisa i-150,000.Ngaphezu kwalokho, indima ebaluleke kakhulu ye-HPMC ukugcina amanzi, okulandelwa ukujiya.Ku-putty powder, inqobo nje uma ukugcinwa kwamanzi kuhle, i-viscosity iphansi (70,000-80,000), kungenzeka futhi.Yiqiniso, i-viscosity inkulu, ukugcinwa kwamanzi okuhlobene kungcono.Uma i-viscosity idlula i-100,000, umthelela we-viscosity ekugcinweni kwamanzi awumkhulu kakhulu.
Yiziphi izinkomba zobuchwepheshe eziyinhloko ze-hydroxypropyl methylcellulose (HPMC)?
Okuqukethwe kwe-Hydroxypropyl kanye ne-viscosity, abasebenzisi abaningi bakhathazekile ngalezi zinkomba ezimbili.Uma okuqukethwe kwe-hydroxypropyl kuphezulu, ukugcinwa kwamanzi ngokuvamile kungcono.I-viscosity, ukugcinwa kwamanzi, isihlobo (kunokuba kube ngokuphelele), kanye ne-viscosity ephezulu, kangcono odakeni lukasimende.
Yiziphi izinto zokusetshenziswa eziyinhloko ze-hydroxypropyl methylcellulose (HPMC)?
Izinto zokusetshenziswa eziyinhloko ze-hydroxypropyl methylcellulose (HPMC): ukotini ocolisisiwe, i-methyl chloride, i-propylene oxide, ezinye izinto zokusetshenziswa, njenge-caustic soda, i-asidi, i-toluene, i-isopropanol.
Iyiphi indima eyinhloko ye-HPMC ekusetshenzisweni kwe-putty powder?
I-HPMC idlala indima yokuqina, ukugcinwa kwamanzi kanye nokwakhiwa ku-putty powder.Ukuqina: I-Cellulose ingaqiniswa ukuze imise okwesikhashana, igcine isisombululo ngokulinganayo, futhi imelane ne-sag.Ukugcinwa kwamanzi: I-putty powder yomiswa kancane, futhi i-calcium yomlotha osizayo isabela ngaphansi kwesenzo samanzi.Ukwakhiwa: I-Cellulose inomphumela wokugcoba, ongenza i-putty powder ibe nokusebenza okuhle.I-HPMC ayibambi iqhaza kunoma yikuphi ukusabela kwamakhemikhali futhi idlala indima yokusekela kuphela.Impushana enamanzi, odongeni, iwukusabela kwamakhemikhali.Ngenxa yokwakhiwa kwezinto ezintsha, i-putty powder odongeni ikhishwa odongeni, igaywe ibe yimpuphu, futhi isetshenziswe kabusha, ngeke isebenze, ngoba kwakhiwa into entsha (i-calcium carbonate).).Izingxenye eziyinhloko ze-ash calcium powder yilezi: I-Ca(OH)2, ingxube ye-CaO kanye nenani elincane le-CaCO3, i-CaO+H2O=Ca(OH)2-Ca(OH)2+CO2=CaCO3+H2O i-calcium ash in amanzi nomoya Ngaphansi kwesenzo se-CO2, i-calcium carbonate iyakhiwa, futhi i-HPMC igcina amanzi kuphela, isiza ukusabela okungcono kwe-ash calcium, futhi ayihlanganyeli kunoma yikuphi ukusabela ngokwayo.
I-HPMC i-non-ionic cellulose ether, ngakho-ke yini engeyona i-ion?
Ngokuvamile, i-non-ion iyinto engekho emanzini futhi engeyona i-ionized.I-ionization isho inqubo lapho i-electrolyte ihlukaniswa khona ibe yiyoni eshajwa ngokukhululekile ku-solvent ethile njengamanzi noma utshwala.Isibonelo, usawoti odliwa nsuku zonke, i-sodium chloride (NaCl), i-ionized ukukhiqiza ama-sodium ions ahamba mahhala (Na+) ane-positively charged kanye ne-chloride (Cl) eshajwa kabi.Okusho ukuthi, i-HPMC ifakwa emanzini futhi ayihlukanisi kuma-ion ashajiwe, kodwa ikhona ngendlela yama-molecule.
Liyini izinga lokushisa lejeli le-hydroxypropyl methylcellulose?
Izinga lokushisa lejeli le-HPMC lihlobene nokuqukethwe kwayo kwe-methoxy.Ukuncipha kokuqukethwe kwe-methoxy, izinga lokushisa lejeli liphezulu.
Ingabe i-powder ye-putty inabo ubuhlobo ne-HPMC?
Impushana ye-putty powder ihlobene kakhulu nekhwalithi ye-gray calcium, futhi ayihlangene kancane ne-HPMC.I-calcium ephansi ye-ash calcium kanye nesilinganiso esingalungile se-CaO ne-Ca(OH)2 ku-ash calcium kuzodala ukulahleka kwempushana.Uma ihlobene ne-HPMC, khona-ke uma ukugcinwa kwamanzi kwe-HPMC kumpofu, kuzophinde kubangele ukulahlekelwa kwempuphu.
Uyini umehluko phakathi kohlobo olusheshayo lwamanzi abandayo kanye nohlobo oluncibilikayo olushisayo lwe-hydroxypropyl methylcellulose kunqubo yokukhiqiza?Uhlobo olusheshayo lwamanzi abandayo lwe-HPMC luphathwa nge-glyoxal, futhi luhlakazwa ngokushesha emanzini abandayo, kodwa aluncibiliki ngempela.Lapho i-viscosity iphezulu, iyancibilika.Ifomu elincibilikayo elishisayo aliphathwa nge-glyoxal.Lapho inani le-glyoxal likhulu, ukuhlakazeka kuyashesha, kodwa i-viscosity ihamba kancane.
Liyini iphunga le-hydroxypropyl methylcellulose (HPMC)?
I-HPMC ekhiqizwa indlela yokuncibilikisa isebenzisa i-toluene ne-isopropyl alcohol njengezincibilikisi.Uma ukugeza kungalungile kakhulu, kuzoba khona ukunambitheka okusele.
Ungakhetha kanjani i-hydroxypropyl methylcellulose (HPMC) efanele ngezinhloso ezahlukene?
Ukusetshenziswa kwe-putty powder: imfuneko iphansi, i-viscosity yi-100,000, kulungile, into ebalulekile ukugcina amanzi angcono.Ukusetshenziswa kodaka: izidingo eziphezulu, i-viscosity ephezulu, i-150,000 ingcono.Ukusetshenziswa kweglue: Kudingeka umkhiqizo osheshayo, i-viscosity ephezulu.
Siyini isiteketiso se-hydroxypropyl methylcellulose?
IHydroxypropyl methylcellulose, HydroxypropylMethylCellulose Isifinyezo: HPMC noma i-MHPC alias: hypromellose;i-cellulose hydroxypropyl methyl ether;I-Hypromellose, i-Cellulose ether, i-2-hydroxypropylmethyl Cellulos eether.I-Cellulose hydroxypropyl methyl ether, iHyprolose.
Ukusetshenziswa kwe-HPMC ku-putty powder, yini imbangela ye-foam ku-putty powder?
I-HPMC idlala indima yokuqina, ukugcinwa kwamanzi kanye nokwakhiwa ku-putty powder.Ungabambi iqhaza kunoma yikuphi ukusabela.Isizathu sebhamuza: 1, amanzi maningi kakhulu.2, ungqimba olungezansi alomile, vele usule ungqimba phezulu, kulula futhi ukucweba.
Ifomula yempuphu ye-putty yodonga lwangaphakathi nangaphandle?
I-interior wall putty powder: i-calcium esindayo 800KG grey calcium 150KG (isitashi se-ether, eluhlaza okuhlanzekile, inhlabathi ye-penmine, i-citric acid, i-polyacrylamide, njll. ingakhethwa ngokufanelekile ukuze ungeze)
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
Uyini umehluko phakathi kwe-HPMC ne-MC?
I-MC yi-methyl cellulose.Ngemva kokuba ukotini ocolisisiwe ulashwe nge-alkali, i-chloromethane isetshenziswa njenge-ejenti ye-etherifying, futhi uchungechunge lokusabela lwenziwa ukulungisa i-cellulose ether.Izinga lokushintsha ngokuvamile lingu-1.6 ukuya ku-2.0, futhi izinga lokushintsha liyahluka kuye ngokuncibilika.Ingeka-nonionic cellulose ether.
(1) Ukugcinwa kwamanzi kwe-methyl cellulose kuncike enanini lokungezwa, i-viscosity, ukucoleka kwezinhlayiyana nezinga lokuqedwa.Ngokuvamile, inani lokwengeza likhulu, ubuhle buncane, futhi i-viscosity inkulu, futhi izinga lokugcinwa kwamanzi liphezulu.Inani elingeziwe linomthelela omkhulu kakhulu kuzinga lokugcinwa kwamanzi, futhi ileveli ye-viscosity ayilingani nezinga lokugcinwa kwamanzi.Izinga lokuqedwa lincike ikakhulukazi ezingeni lokuguqulwa kwendawo yezinhlayiya ze-cellulose kanye nokucoleka kwezinhlayiya.Phakathi kwama-cellulose ethers angenhla, i-methylcellulose ne-hydroxypropylmethylcellulose anezinga eliphezulu lokugcinwa kwamanzi.
(2) I-methylcellulose iyancibilika emanzini abandayo, futhi kunzima ukuyincibilika emanzini ashisayo.Isixazululo esinamanzi sizinzile kakhulu ebangeni le-pH=3~12.Inokuhambisana okuhle nesitashi, i-guar gum namanye ama-surfactants amaningi.Lapho izinga lokushisa lifinyelela izinga lokushisa le-gelation, kwenzeka i-gelation phenomenon.
(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 ° C, ukugcinwa kwamanzi kwe-methyl cellulose kuzowohloka kakhulu, okuthinta kakhulu ukusebenza kodaka.
(4) I-Methyl cellulose inomphumela ophawulekayo ekusebenzeni nasekubambeleleni kodaka.“Ukunamathela” lapha kubhekisela emandleni okunamathela azwakala phakathi kwethuluzi lesicelo lesisebenzi kanye ne-substrate yodonga, okungukuthi, ukumelana nokugunda kodaka.Ukunamathela kukhulu, ukumelana kwe-shear kodaka kukhulu, amandla adingwa isisebenzi ngesikhathi sokusetshenziswa nawo makhulu, futhi ukusebenza kodaka kumpofu.
Ukunamathela kwe-methylcellulose kumaphakathi emikhiqizweni ye-cellulose ether.I-HPMC iyi-hydroxypropylmethylcellulose, okuyi-nonionic cellulose ether exutshwe i-ether elungiselelwe uchungechunge lokusabela kusetshenziswa i-acetal oxide ne-methyl chloride njenge-ejenti etherifying ngemva kokwenziwa kwe-alkalization kukakotini ocolisisiwe.Izinga lokushintsha ngokuvamile lingu-1.2 kuya ku-2.0.Imvelo yayo ihlukile kuye ngesilinganiso sokuqukethwe kwe-methoxyl nokuqukethwe kwe-hydroxypropyl.
(1) IHydroxypropyl methylcellulose incibilika kalula emanzini abandayo, futhi kungase kube nzima ukuyincibilikisa emanzini ashisayo.Nokho, izinga lokushisa layo le-gelation emanzini ashisayo liphakeme kakhulu kunalelo le-methyl cellulose.Ukuncibilika emanzini abandayo nakho kungcono kakhulu kune-methyl cellulose.-
(2) I-viscosity ye-hydroxypropylmethylcellulose ihlobene nesisindo samangqamuzana ayo, futhi i-viscosity iphezulu uma isisindo se-molecular sikhulu.Izinga lokushisa liphinde lithinte i-viscosity yayo, izinga lokushisa liyakhuphuka, futhi i-viscosity iyancipha.Nokho, i-viscosity yayo inezinga lokushisa eliphansi kune-methyl cellulose.Isixazululo saso sizinzile ekamelweni lokushisa.
(3) I-Hydroxypropyl methylcellulose izinzile kuma-acids nezisekelo, futhi isisombululo sayo esinamanzi sizinzile kakhulu ebangeni le-pH = 2 ~ 12.I-Caustic soda namanzi e-lime ayinawo umthelela omningi ezakhiweni zawo, kodwa i-alkali isheshisa izinga lokuqedwa futhi ikhulise i-viscosity.IHydroxypropyl methylcellulose inozinzo kusawoti ojwayelekile, kodwa lapho ukugcwala kwesixazululo sikasawoti kuphezulu, i-viscosity yesisombululo se-hydroxypropyl methylcellulose ivame ukwanda.
(4) Ukugcinwa kwamanzi kwe-hydroxypropyl methylcellulose kuncike enanini lokungezwa, i-viscosity, njll., futhi izinga lokugcinwa kwamanzi ngaphansi kwenani elifanayo liphezulu kunele-methylcellulose.
(5) I-Hydroxypropyl methylcellulose ingaxutshwa nenhlanganisela ye-polymer encibilika emanzini ukuze yakhe i-uniform, isixazululo se-viscosity esiphezulu.Okufana ne-polyvinyl alcohol, isitashi ether, ushingamu wemifino nokunye okunjalo.
(6) I-Hydroxypropyl methylcellulose inokunamathela okuphezulu kudaka kune-methyl cellulose.
(7) I-Hydroxypropyl methylcellulose inokumelana kangcono ne-enzymatic kune-methylcellulose, futhi isisombululo sayo mancane amathuba okuthi sonakaliswe nge-enzymatic kune-methylcellulose.
I-HPMC viscosity nobudlelwano bokushisa, yini okufanele inakwe ezinhlelweni ezisebenzayo?
I-viscosity ye-HPMC ihambisana ngokuphambene nezinga lokushisa, okungukuthi, i-viscosity iyanda ngokunciphisa izinga lokushisa.I-viscosity yomkhiqizo esivame ukubhekisela kuwo kuwumphumela wokuhlola isisombululo sawo samanzi esingu-2% ezingeni lokushisa elingu-20 degrees Celsius.Ekusetshenzisweni okusebenzayo, ezindaweni ezinomehluko omkhulu wokushisa phakathi kwehlobo nobusika, kufanele kuqashelwe ukuthi kunconywa ukusebenzisa i-viscosity ephansi kakhulu ebusika, evumelana kakhulu nokwakhiwa.Uma kungenjalo, lapho izinga lokushisa liphansi, i-viscosity ye-cellulose izokhula, futhi lapho ikhunyulwa, ukuzwa kwesandla kuyoba nzima.I-viscosity emaphakathi: 75000-100000 Ikakhulu isetshenziselwa i-putty Isizathu: ukugcinwa kwamanzi i-viscosity ephezulu: 150000-200000 isetshenziselwa ikakhulukazi i-polystyrene granule insulation mortar powder kanye ne-vitrified microbead insulation mortar.Isizathu: i-viscosity ephezulu, udaka akulula ukuwa Yebo, sag, ukwakhiwa okuthuthukisiwe.Kodwa ngokuvamile, ukuphakama kwe-viscosity, ukugcinwa kwamanzi kangcono, izitshalo eziningi zodaka ezomile zicabangela izindleko, esikhundleni se-cellulose ye-viscosity ephakathi nendawo ne-medium viscosity cellulose (75000-100000).(20000-40000) ukunciphisa inani elingeziwe.
Isikhathi sokuthumela: Jan-07-2019