I-HPMC 400 e-viscosity ephansi isetshenziswa kakhulu ekudakeni okuzilinganisela, kodwa ngokuvamile ingeniswa kwamanye amazwe.
Isizathu: I-viscosity iphansi, yize ukugcinwa kwamanzi kuphansi, kodwa ukuleveli kuhle, futhi ubuningi be-mortar buphakeme.
Ukuchama okuphakathi nokuphansi:i-hydroxypropyl methylcelluloseI-HPMC 20000-40000 isetshenziswa kakhulu ekunamathiseleni amathayili, i-caulking agent, udaka olulwa nokuqhekeka, udaka lokubopha oluvikela ukushisa, njll.
Isizathu: ukusebenza kahle, ukwengeza amanzi okuncane, ukuqina kakhulu kodaka.
1. Iyini injongo eyinhloko ye-hydroxypropyl methylcellulose (HPMC)?
——A: 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 lemithi ngokwenhloso. Njengamanje, iningi lemikhiqizo yasekhaya liyizinga lokwakha. Ebangeni lokwakha, inani lempuphu ye-putty likhulu kakhulu, cishe u-90% usetshenziselwa i-putty powder, kanti okusele kusetshenziselwa i-samente mortar kanye ne-glue.
2. Kunezinhlobo eziningana ze-hydroxypropyl methylcellulose (HPMC), futhi uyini umehluko ekusetshenzisweni kwazo?
——Impendulo: I-HPMC ingahlukaniswa ngohlobo olusheshayo kanye nohlobo oluncibilikayo olushisayo. Imikhiqizo yohlobo olusheshayo isakazeka ngokushesha emanzini abandayo bese inyamalala emanzini. Ngalesi sikhathi, uketshezi aluna-viscosity, ngoba i-HPMC ihlakazeka emanzini kuphela futhi ayina-extrusion yangempela. Ngemva kwemizuzu engaba ngu-2, i-viscosity yoketshezi yanda kancane kancane, yakha i-colloid ecacile ecwebezelayo. Imikhiqizo encibilikisa ukushisa, lapho ihlangana namanzi abandayo, ingahlakazeka ngokushesha emanzini ashisayo, bese inyamalala emanzini ashisayo. Lapho izinga lokushisa lehla liye ezingeni lokushisa elithile (umkhiqizo wenkampani yethu ungama-degree Celsius angu-65), i-viscosity ivela kancane kancane ize yakhe i-colloid ecacile ecwebezelayo. Uhlobo lwe-hot-melt lungasetshenziswa kuphela ku-putty powder kanye nodaka. Ku-glue nopende oluyi-liquid, kuzokwenzeka isenzakalo sokuhlanganisa futhi asikwazi ukusetshenziswa. Uhlobo olusheshayo lunezinhlobo eziningi zokusetshenziswa. Lungasetshenziswa ku-putty powder kanye nodaka, kanye naku-liquid glue nopende, ngaphandle kokuphikisana.
3. Yiziphi izindlela zokuncibilikisa i-hydroxypropyl methylcellulose (HPMC)?
——Impendulo: Indlela yokuncibilikisa amanzi ashisayo: Njengoba i-HPMC ingancibilikisiwe emanzini ashisayo, i-HPMC ingahlakazeka ngokulinganayo emanzini ashisayo esigabeni sokuqala, bese incibilikiswa 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 ngokuxubha kancane, ekuqaleni i-HPMC yantanta phezu kwamanzi, yabe isiba yisicaba kancane kancane, esasipholiswa ngokuxubha.
2), engeza i-1/3 noma i-2/3 yenani lamanzi elidingekayo esitsheni, bese ulishisa ku-70 ° C, ngokwendlela ye-1), hlakaza i-HPMC, lungisa i-slurry yamanzi ashisayo; bese ufaka inani elisele lamanzi abandayo emanzini ashisayo. Ku-slurry, ingxube yapholiswa ngemva kokuyixuba.
Indlela yokuxuba i-powder: Hlanganisa i-HPMC powder nenani elikhulu lezinye izinto eziwumpuphu, hlanganisa kahle ngomshini wokuxuba, bese ufaka amanzi ukuze ancibilike, bese i-HPMC ingancibilika ngalesi sikhathi ngaphandle kokuhlangana ndawonye, ngoba kukhona i-HPMC encane kuphela kuwo wonke amakhona amancane. I-powder izoncibilika ngokushesha uma ihlangana namanzi. ——Le ndlela isetshenziswa abakhiqizi be-putty powder kanye ne-mortar. [I-Hydroxypropyl methylcellulose (HPMC) isetshenziswa njengesithambisi kanye ne-ejenti yokugcina amanzi ku-putty powder mortar.]
4. Ungahlulela kanjani ikhwalithi ye-hydroxypropyl methylcellulose (HPMC) kalula nangokuqondakalayo?
——Impendulo: (1) Ubumhlophe: Nakuba ubumhlophe bungenakunquma ukuthi i-HPMC kulula ukuyisebenzisa, futhi uma kufakwa i-brightener enqubweni yokukhiqiza, kuzothinta ikhwalithi yayo. Kodwa-ke, iningi lemikhiqizo emihle inobumhlophe obuhle. (2) Ubumhlophe: Ubumhlophe be-HPMC ngokuvamile bungama-mesh angu-80 kanye nama-mesh angu-100, kanti ama-mesh angu-120 angaphansi. Iningi le-HPMC ekhiqizwa e-Hebei lingama-mesh angu-80. Uma ubumhlophe buncane, 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 kunezinto ezingancibiliki kakhulu kuyo. Ukungena kwe-reactor eqondile ngokuvamile kuhle, kanti i-reactor evundlile imbi kakhulu, kodwa akunakushiwo ukuthi ikhwalithi ye-reactor evundlile ingcono kuneye-reactor evundlile, futhi kunezici eziningi ezinquma ikhwalithi yomkhiqizo. (4) Amandla adonsela phansi athile: lapho amandla adonsela phansi athile emakhulu, kulapho esinda khona kungcono. Amandla adonsela phansi athile makhulu, ngokuvamile ngoba okuqukethwe yi-hydroxypropyl okukuyo kuphakeme, kanti okuqukethwe yi-hydroxypropyl kuphakeme, ukugcinwa kwamanzi kungcono.
5. Inani le-hydroxypropyl methylcellulose (HPMC) ku-putty powder?
——Impendulo: Inani le-HPMC elisetshenziswa ezisetshenziswayo liyahlukahluka kuye ngesimo sezulu, izinga lokushisa, ikhwalithi ye-calcium yomlotha wendawo, ifomula yempuphu ye-putty kanye “nekhwalithi edingekayo kumakhasimende”. Ngokuvamile, liphakathi 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;
6. Iyini i-viscosity efanele ye-hydroxypropyl methylcellulose (HPMC)?
——Impendulo: Impuphu ye-putty ngokuvamile ingu-100,000 yuan, kanti udoti unzima kakhulu, futhi kulula ukuwusebenzisa ku-150,000 yuan. Ngaphezu kwalokho, indima ebaluleke kakhulu ye-HPMC ukugcina amanzi, kulandelwe ukujiya. Kumpuphu ye-putty, inqobo nje uma ukugcinwa kwamanzi kukuhle futhi i-viscosity iphansi (70,000-80,000), kungenzeka futhi. Vele, i-viscosity iphakeme, futhi ukugcinwa kwamanzi okuhlobene kungcono. Lapho i-viscosity idlula u-100,000, umphumela we-viscosity ekugcinweni kwamanzi awukhulu.
7. Yiziphi izinkomba zobuchwepheshe eziyinhloko ze-hydroxypropyl methylcellulose (HPMC)?
——Impendulo: Okuqukethwe kwe-hydroxypropyl kanye ne-viscosity, abasebenzisi abaningi bayakhathalela lezi zinkomba ezimbili. Uma okuqukethwe kwe-hydroxypropyl kuphakeme, kulapho ukugcinwa kwamanzi kuba ngcono khona. I-viscosity ephezulu, ukugcinwa kwamanzi, okungcono kakhulu (kunokuba okuphelele), kanye ne-viscosity ephezulu, ukusetshenziswa okungcono ku-mortar yesamente.
8. Yiziphi izinto eziyinhloko zokusetshenziswa kwe-hydroxypropyl methylcellulose (HPMC)?
—— A: Izinto zokusetshenziswa eziyinhloko ze-hydroxypropyl methylcellulose (HPMC): ukotini ocolisisiwe, i-methyl chloride, i-propylene oxide, ezinye izinto zokusetshenziswa zifaka phakathi i-flake alkali, i-asidi, i-toluene, i-isopropanol, njll.
9. Iyini indima eyinhloko ye-HPMC ekusetshenzisweni kwempuphu ye-putty, futhi ingabe ikhona ikhemistri?
——Impendulo: I-HPMC inemisebenzi emithathu yokuqina, ukugcinwa kwamanzi kanye nokwakhiwa ku-putty powder. Ukuqina: I-Cellulose ingaqiniswa ukuze imiswe, igcine isisombululo sifana futhi sihambisana, futhi imelane nokugoba. Ukugcinwa kwamanzi: Yenza i-putty powder yome kancane, futhi isize ukusabela kwe-calcium yomlotha ngaphansi kwesenzo samanzi. Ukwakhiwa: I-Cellulose inomphumela wokugcoba, ongenza i-putty powder isebenze kahle. I-HPMC ayihlanganyeli kunoma yikuphi ukusabela kwamakhemikhali futhi idlala indima yokusiza kuphela. Ukwengeza amanzi ku-putty powder bese uyibeka odongeni kuyindlela yokusabela kwamakhemikhali. Ngenxa yokwakheka kwezinto ezintsha, susa i-putty powder odongeni, uyigaye ibe yi-powder, bese uyisebenzisa futhi. Ngeke isebenze, ngoba izinto ezintsha (i-calcium carbonate) sezivele zakhekile. ) phezulu. Izakhi eziyinhloko zempuphu ye-calcium yomlotha yilezi: ingxube ye-Ca(OH)2, i-CaO kanye nenani elincane le-CaCO3, i-CaO+H2O=Ca(OH)2 —Ca(OH)2+CO2=CaCO3↓+H2O I-calcium yomlotha emanzini nasemoyeni Ngaphansi kwesenzo se-CO2, kukhiqizwa i-calcium carbonate, kuyilapho i-HPMC igcina amanzi kuphela futhi isiza ukusabela okungcono kwe-calcium yomlotha, futhi ayihlanganyeli kunoma yikuphi ukusabela ngokwayo.
10. I-HPMC ayiyona i-ionic cellulose ether, ngakho-ke iyini i-non-ionic?
- Impendulo: Ngokwe-layman, ama-non-ion ayizinto ezingayi-ion emanzini. I-ionization ibhekisela enkambisweni lapho i-electrolyte ihlukaniswa khona ibe ama-ion ashajayo ahamba ngokukhululeka ku-solvent ethile (njengamanzi, utshwala). Isibonelo, i-sodium chloride (NaCl), usawoti odliwa nsuku zonke, uyancibilika emanzini bese uyayi-ion ukuze ukhiqize ama-ion e-sodium ahamba ngokukhululeka (Na+) ashajayo kahle kanye nama-ion e-chloride (Cl) ashaja kabi. Okusho ukuthi, uma i-HPMC ifakwa emanzini, ayihlukani ibe ama-ion ashajayo, kodwa ikhona ngesimo sama-molecule.
Isikhathi sokuthunyelwe: Okthoba-17-2022