1. Iyini inhloso enkulu ye-HPMC?
Lo mkhiqizo usetshenziswa njenge-thickener, dispersant, binder, excipient, i-coating engazweli uwoyela, i-filler, i-emulsifier kanye ne-stabilizer embonini yendwangu.Ibuye isetshenziswe kabanzi embonini ye-synthetic resin, petrochemical, ceramic, paper, lesikhumba, imithi, ukudla nezimonyo.
2. Iyini indima ye-HPMC ngaphakathi kodonga lwe-putty powder?
I-HPMC inemisebenzi emithathu: i-putty powder yodonga lwangaphakathi, ukuqina, ukuvala amanzi kanye nokwakha.Ukugxila: I-Methyl cellulose ingagxilwa ngesisombululo esintantayo noma esinamanzi ukuze kugcinwe imisebenzi efanayo futhi engaguquki futhi kuvimbele ukugeleza nokulenga.Amanzi okukhiya: Impushana yodonga lwangaphakathi yoma kancane, futhi i-lime calcium eyengeziwe ibonakala ekusetshenzisweni kwamanzi.Ukwakhiwa kobunjiniyela: I-Methyl cellulose inomsebenzi wokumanzisa, ongenza i-putty powder yangaphakathi ibe nesakhiwo esihle sobunjiniyela.I-HPMC ayibambi iqhaza ekuguqulweni kwawo wonke amakhemikhali, kodwa ibamba iqhaza kuphela ekugcwaliseni kabusha.I-wall putty powder yangaphakathi, odongeni, inguquko yamakhemikhali, ngoba kukhona ukuguqulwa kwamakhemikhali amasha, i-putty powder yangaphakathi yodonga ikhishwa odongeni, igaywe, futhi isetshenziswe kabusha , Ngoba ikhemikhali entsha (i-calcium bicarbonate) iye yakhiqizwa. .Izingxenye eziyinhloko zempushana ye-calcium empunga yilezi: ingxube ye-Ca(OH)2, i-CaO nenani elincane le-CaCO3, i-CaO+H2O=Ca(OH)2 —Ca(OH)2+CO2=CaCO3↓+H2O grey calcium emanzini nasemoyeni Ngaphansi kwesenzo se-CO2, i-calcium carbonate iyakhiwa, kuyilapho i-HPMC igcina amanzi kuphela futhi isiza ukusabela okungcono kwe-gray calcium, futhi ayihlanganyeli kunoma yikuphi ukusabela ngokwayo.
3. Indlela yokwahlulela ikhwalithi ye-HPMC kalula futhi ngendlela enembile?
(1) Ubumhlophe: Nakuba ubumhlophe bungakwazi ukunquma ukuthi i-HPMC kulula yini ukuyisebenzisa, futhi uma isicwebezeli sengezwa kunqubo yokukhiqiza, sizothinta ikhwalithi yayo.Nokho, imikhiqizo emihle inobumhlophe obuhle.(2) Ukulunga: Ubucwebe be-HPMC ngokuvamile buwu-80 mesh kanye ne-100 mesh, 120 mesh mincane, futhi iningi le-HPMC elikhiqizwa e-Hebei lingama-80 mesh.Ubuhle obuhle, bungcono ngokujwayelekile.(3) Ukudluliselwa: Faka i-hydroxypropyl methylcellulose (HPMC) emanzini ukuze wenze i-colloid esobala, bese ubheka ukudluliselwa kwayo.Ukudlulisa okukhulu, kuba ngcono, okubonisa ukuthi kukhona okuncane okungancibiliki ngaphakathi..Ukungena kwe-reactor eqondile ngokuvamile kuhle, futhi i-reactor evundlile yimbi kakhulu, kodwa akusho ukuthi ikhwalithi ye-reactor eqondile ingcono kunaleyo ye-reactor evundlile.Izinga lomkhiqizo lisanqunywa izici eziningi.(4) Isilinganiso: Uma sikhulu isilinganiso, esindayo siba ngcono.Ukucaciswa okuphezulu ngokuvamile kungenxa yokuqukethwe okuphezulu kwe-hydroxypropyl kuyo, futhi ukuphakama kokuqukethwe kwe-hydroxypropyl, ukugcinwa kwamanzi kungcono.
4. Yini okufanele inakwe lapho usebenzisa i-viscosity nezinga lokushisa le-HPMC?
I-viscosity ye-HPMC ihambisana ngokuphambene nezinga lokushisa, okungukuthi, i-viscosity iyanda njengoba izinga lokushisa liyancipha.Ngokuvamile sithi i-viscosity yomkhiqizo ibhekisela kumphumela wokuhlola isisombululo sawo samanzi esingu-2% ekushiseni okungama-degrees Celsius angu-20.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 isandla sizozizwa sisindayo lapho sikhishwa.
5. Yiziphi izindlela zokuchithwa kwe-HPMC?
Indlela yokuchithwa kwamanzi ashisayo: Njengoba i-HPMC ingancibilikisiwe emanzini ashisayo, i-HPMC ingahlakazwa ngokufanayo emanzini ashisayo esigabeni sokuqala, bese incibilika ngokushesha lapho isipholile.Izindlela ezimbili ezijwayelekile zichazwe kanje: 1).Inani lamanzi ashisayo futhi ashiselwe cishe ku-70°C.Kancane kancane engeza i-hydroxypropyl methylcellulose ngokunyakazisa kancane, qala i-HPMC intante phezu kwamanzi, bese kancane kancane wenze udaka, bese upholisa udaka ngokunyakazisa.2).Faka i-1/3 noma 2/3 yenani elidingekayo lamanzi esitsheni bese usishisa ku-70°C.Ngokwendlela ye-1), hlakaza i-HPMC ukuze ulungiselele udaka lwamanzi ashisayo;bese ufaka inani elisele lamanzi abandayo emanzini ashisayo Ku-slurry, pholisa ingxube ngemva kokugqugquzela.Indlela yokuxuba impushana: hlanganisa i-HPMC powder nenani elikhulu lezinye izinto eziyimpuphu, xuba kahle ne-blender, bese ufaka amanzi ukuze uhlakaze, bese i-HPMC ingancibilika ngalesi sikhathi ngaphandle kokuhlanganisa nokuhlanganisa, ngoba ikhona ngalinye elincane, kukhona kuphela. ingcosana ye-HPMC Impushana izoncibilika ngokushesha lapho ihlangana namanzi.-Abakhiqizi be-putty powder kanye nodaka basebenzisa le ndlela.[I-Hydroxypropyl methyl cellulose (HPMC) isetshenziswa njenge-ejenti ejiya futhi egcina amanzi kudaka oluyimpuphu.]
6. Yini iumthamoye-HPMC engezwe ku-putty powder?
Inani le-HPMC elisetshenziswe ekusetshenzisweni kwangempela liyahlukahluka kuye ngokuthi isimo sezulu, izinga lokushisa, izinga le-calcium yomlotha wendawo, ifomula ye-putty powder, kanye "nekhwalithi edingwa amakhasimende".Ngokuvamile, iphakathi kuka-4 kg no-5 kg.Isibonelo, i-putty powder emhlobiso'>I-Beijing iningi lama-5 kg;i-putty powder e-Guizhou ngokuvamile i-5 kg ehlobo kanye ne-4.5 kg ebusika;Isamba sesengezo sika-Yunnan sincane uma kuqhathaniswa, ngokuvamile si-3 kg-4 kg nokunye.
Isikhathi sokuthumela: Nov-13-2021