1. Kuyini ukusetshenziswa okuyinhloko kwei-hydroxypropyl methylcellulose (HPMC)?
I-Hydroxypropyl methylcellulose isetshenziswa kabanzi ezintweni zokwakha, ezimbozweni, ezitsheni zokwenziwa, ezitsheni zobumba, kwezokwelapha, ekudleni, ezindwangu, kwezolimo, ezimonyweni, egwayi nakwezinye izimboni. I-Hydroxypropyl methylcellulose ingahlukaniswa ngebanga lokwakha, izinga lokudla kanye nezinga lemithi ngokwendlela esetshenziswa ngayo. Njengamanje, iningi lemikhiqizo yasekhaya libanga lokwakha. Ebangeni lokwakha, i-putty powder isetshenziswa ngenani elikhulu, cishe u-90% usetshenziselwa i-putty powder, kanti okusele kusetshenziselwa i-samente mortar kanye ne-glue.
2. Kunezinhlobo eziningana ze-hydroxypropyl methylcellulose (HPMC), futhi yimuphi umehluko ekusetshenzisweni kwazo?
I-HPMC ingahlukaniswa ngohlobo olusheshayo kanye nohlobo lokuncibilika okushisayo. Imikhiqizo yohlobo olusheshayo ihlakazeka ngokushesha uma ihlangana namanzi abandayo bese inyamalala emanzini. Ngalesi sikhathi, uketshezi alunawo u-viscosity ngoba i-HPMC ihlakazeka emanzini kuphela ngaphandle kokuncibilika kwangempela. Ngemva kwemizuzu engaba ngu-2, u-viscosity woketshezi uyanda kancane kancane, wakhe i-colloid ecacile ethambile. Imikhiqizo encibilikayo eshisayo, uma ihlangana namanzi abandayo, ingahlakazeka ngokushesha emanzini ashisayo bese inyamalala emanzini ashisayo. Lapho izinga lokushisa lehla liye ezingeni lokushisa elithile, u-viscosity uzovela kancane kancane uze wakhe i-colloid ecacile ethambile. Uhlobo oluncibilikayo olushisayo lungasetshenziswa kuphela ku-putty powder kanye no-mortar. Ku-glue nopende oluyi-liquid, kuzoba khona isenzakalo sokuhlela futhi alukwazi ukusetshenziswa. Uhlobo olusheshayo lunezinhlobo eziningi zokusetshenziswa. Lungasetshenziswa ku-putty powder kanye no-mortar, kanye ne-liquid glue nopende, ngaphandle kokuphikisana.
3. Yiziphi izindlela zokuncibilikisa i-hydroxypropyl methylcellulose (HPMC)?
Indlela yokuncibilikisa amanzi ashisayo: Njengoba i-HPMC ingancibilikisi emanzini ashisayo, i-HPMC ingahlakazeka ngokulinganayo emanzini ashisayo esigabeni sokuqala, bese incibilika ngokushesha uma ipholile. Izindlela ezimbili ezijwayelekile zichazwa kanje:
1) Faka inani elidingekayo lamanzi ashisayo esitsheni bese ulifudumeza cishe ku-70°C. I-hydroxypropyl methylcellulose yengezwa kancane kancane ngaphansi kokuxubha kancane, ekuqaleni i-HPMC yantanta phezu kwamanzi, yabe isiba yisicaba kancane kancane, esasipholiswa ngaphansi kokuxubha.
2) Faka ingxenye yesithathu noma ingxenye yesithathu yenani lamanzi elidingekayo esitsheni, bese ulishisa lifike ku-70 ° C, ngokwendlela yoku-1), hlakaza i-HPMC ukuze ulungiselele i-slurry yamanzi ashisayo; bese ufaka inani elisele lamanzi abandayo ku-slurry yamanzi ashisayo, ingxube ipholiswe ngemva kokuyixuba.
Indlela yokuxuba i-powder: hlanganisa i-HPMC powder nenani elikhulu lezinye izinto eziwumpuphu, hlanganisa kahle ngomshini wokuxuba, bese ufaka amanzi ukuze ancibilike, khona-ke i-HPMC ingancibilika ngalesi sikhathi ngaphandle kokuhlanganiswa, ngoba kukhona i-HPMC encane kuphela ekhoneni ngalinye elincane i-Powder, izoncibilika ngokushesha uma ithintana namanzi. ——Abakhiqizi be-Putty powder kanye ne-mortar basebenzisa le ndlela. [I-Hydroxypropyl methylcellulose (HPMC) isetshenziswa njenge-thickener kanye ne-ejenti yokugcina amanzi ku-putty powder mortar.]
4. Ungahlulela kanjani ikhwalithi ye-hydroxypropyl methylcellulose (HPMC) kalula nangokuqondakalayo?
(1) Ubumhlophe: Nakuba ubumhlophe bungenakunquma ukuthi i-HPMC kulula ukuyisebenzisa, futhi uma kungezwa izinto zokwenza mhlophe ngesikhathi senqubo yokukhiqiza, kuzothinta ikhwalithi yayo. Kodwa-ke, imikhiqizo eminingi emihle inobumhlophe obuhle.
(2) Ubunono: Ubunono be-HPMC ngokuvamile bunama-mesh angu-80 kanye nama-mesh angu-100, ama-mesh angu-120 angaphansi, kanti iningi le-HPMC elikhiqizwa e-Hebei lingama-mesh angu-80. Uma ubunono buncane, ngokuvamile, kuba ngcono.
(3) Ukudluliselwa: Faka i-hydroxypropyl methylcellulose (HPMC) emanzini ukuze wakhe i-colloid esobala, bese uhlola ukudluliselwa kwayo. Uma ukudluliselwa kuphakeme, kungcono, okubonisa ukuthi akukho okungancibiliki kuyo. Ukungenela kwama-reactor aqondile ngokuvamile kuhle, kanti ama-reactor aqondile kubi kakhulu, kodwa akusho ukuthi ikhwalithi yama-reactor aqondile ingcono kuneyama-reactor aqondile, futhi ikhwalithi yomkhiqizo inqunywa yizici eziningi.
(4) Amandla adonsela phansi athile: Uma amandla adonsela phansi athile emakhulu, kulapho esinda khona. Amandla adonsela phansi aphezulu, ngokuvamile ngoba okuqukethwe yiqembu le-hydroxypropyl elikuyo kuphakeme, kanti okuqukethwe yiqembu le-hydroxypropyl kuphakeme, ukugcinwa kwamanzi kungcono.
5. Lingakanani inani le-hydroxypropyl methylcellulose (HPMC) ku-putty powder?
Inani le-HPMC elisetshenziswa ezisetshenziswayo liyahlukahluka kuye ngesimo sezulu, izinga lokushisa, ikhwalithi ye-calcium yomlotha wendawo, ifomula yempuphu ye-putty kanye "nekhwalithi edingekayo ngamakhasimende". Ngokuvamile, phakathi kuka-4 kg no-5 kg. Isibonelo: iningi lempuphu ye-putty eBeijing lingu-5 kg; iningi lempuphu ye-putty eGuizhou lingu-5 kg ehlobo kanye no-4.5 kg ebusika; inani lempuphu ye-putty eYunnan lincane kakhulu, ngokuvamile lisuka ku-3 kg kuya ku-4 kg, njll.
6. Iyini i-viscosity efanele ye-hydroxypropyl methylcellulose (HPMC)?
Impuphu ye-putty ngokuvamile yanele ama-yuan ayi-100,000, kanti izidingo ze-mortar ziphakeme, kanti ama-yuan ayi-150,000 ayadingeka ukuze kube lula ukuyisebenzisa. Ngaphezu kwalokho, umsebenzi obaluleke kakhulu we-HPMC ukugcina amanzi, kulandelwe ukujiya. Kumpuphu ye-putty, inqobo nje uma ukugcina amanzi kukuhle futhi i-viscosity iphansi (70,000-80,000), kungenzeka futhi. Vele, uma i-viscosity iphakeme, kungcono ukugcinwa kwamanzi. Lapho i-viscosity idlula ama-100,000, i-viscosity izothinta ukugcinwa kwamanzi. Akusekho okuningi.
7. Yiziphi izinkomba zobuchwepheshe eziyinhloko ze-hydroxypropyl methylcellulose (HPMC)?
Okuqukethwe kwe-hydroxypropyl kanye ne-viscosity, abasebenzisi abaningi bakhathazekile ngalezi zinkomba ezimbili. Labo abanokuqukethwe okuphezulu kwe-hydroxypropyl ngokuvamile banokugcinwa kwamanzi okungcono. Leyo enokugcinwa kwamanzi okungcono, uma kuqhathaniswa (hhayi ngokuphelele), kanti leyo enokugcinwa kwamanzi okuphezulu isetshenziswa kangcono ku-cement mortar.
8. Yiziphi izinto eziyinhloko zokusetshenziswai-hydroxypropyl methylcellulose (HPMC)?
Izinto zokusetshenziswa eziyinhloko ze-hydroxypropyl methylcellulose (HPMC): ukotini ocolisisiwe, i-methyl chloride, i-propylene oxide, nezinye izinto zokusetshenziswa, i-caustic soda, i-acid, i-toluene, i-isopropanol, njll.
9. Uyini umsebenzi oyinhloko wokusetshenziswa kwe-HPMC ku-putty powder, futhi ingabe kwenzeka ngamakhemikhali?
Ku-putty powder, i-HPMC idlala indima ezintathu zokuqina, ukugcinwa kwamanzi kanye nokwakhiwa. Ukuqina: I-Cellulose ingaqiniswa ukuze imise futhi igcine isisombululo silingana phezulu naphansi, futhi imelane nokuwa. Ukugcinwa kwamanzi: yenza i-putty powder yome kancane, futhi isize i-calcium yomlotha ukuthi isabele ngaphansi kwesenzo samanzi. Ukwakhiwa: I-Cellulose inomphumela wokugcoba, ongenza i-putty powder ibe nokwakhiwa okuhle. I-HPMC ayihlanganyeli kunoma yikuphi ukusabela kwamakhemikhali, kodwa idlala indima yokusiza kuphela. Ukwengeza amanzi ku-putty powder bese uyibeka odongeni kuyindlela yokusabela kwamakhemikhali, ngoba kwakheka izinto ezintsha. Uma ususa i-putty powder odongeni, uyigaye ibe yi-powder, bese uyisebenzisa futhi, ngeke isebenze ngoba izinto ezintsha (i-calcium carbonate) sezivele zakhekile.) Izakhi eziyinhloko zempuphu ye-calcium yomlotha yilezi: ingxube ye-Ca (OH)2, i-Ca O kanye nenani elincane le-CaCO3, i-CaO+H2O=Ca (OH)2—Ca(OH)2+CO2=CaCO3↓+H2O I-calcium yomlotha isemanzini nasemoyeni Ngaphansi kwesenzo se-CO2, kukhiqizwa i-calcium carbonate, kuyilapho i-HPMC igcina amanzi kuphela, isiza ukusabela okungcono kwe-calcium yomlotha, futhi ayihlanganyeli kunoma yikuphi ukusabela ngokwayo.
10. I-HPMC iyi-ether ye-cellulose engeyona i-ionic, ngakho-ke iyini i-non-ionic?
Ngokwesimo se-layman, ama-non-ion ayizinto ezingayi-ion emanzini. I-ionization ibhekisela enkambisweni lapho i-electrolyte ihlukaniswa khona ibe ama-ion ashajwe angahamba ngokukhululeka ku-solvent ethile (njengamanzi, utshwala). Isibonelo, i-sodium chloride (NaCl), usawoti esiwudla nsuku zonke, uyancibilika emanzini bese uyayi-ion ukuze ukhiqize ama-ion e-sodium ahambayo ngokukhululeka (Na+) ashajwe kahle kanye nama-ion e-chloride (Cl) ashajwe kabi. Okusho ukuthi, umaI-HPMCuma ifakwa emanzini, ngeke ihlukane ibe ama-ion ashajekile, kodwa ikhona ngesimo sama-molecule.
Isikhathi sokuthunyelwe: Ephreli-28-2024