I-viscosity ephansi I-HPMC :i-HPMC 400 isetshenziselwa kakhulu udaka oluzilinganisa ngokwalo, kodwa ngokuvamile luyangeniswa kwamanye amazwe.
Isizathu: I-viscosity iphansi, nakuba ukugcinwa kwamanzi kukubi, kodwa izinga lihle, futhi ukuminyana kodaka kuphezulu.
I-viscosity emaphakathi nephansi:i-hydroxypropyl methylcelluloseI-HPMC 20000-40000 isetshenziswa kakhulu ukunamathela kuthayela, i-ejenti ye-caulking, udaka olulwa nokuqhekeka, udaka oluhlanganisiwe olushisayo, njll.
Isizathu: ukusebenza kahle, ukungezwani okuncane kwamanzi, ukuhlangana kodaka oluphezulu.
1. Iyini inhloso enkulu ye-hydroxypropyl methylcellulose (HPMC)?
——A: I-HPMC isetshenziswa kakhulu ezintweni zokwakha, okokuhlanganisa, ama-synthetic resin, izitsha zobumba, imithi, ukudla, izindwangu, ezolimo, izimonyo, ugwayi nezinye izimboni. I-HPMC ingahlukaniswa: Ibanga lokwakha, ibanga lokudla kanye nebanga lezemithi ngokwenhloso. Njengamanje, iningi lemikhiqizo yasekhaya isezingeni lokwakha. Ebangeni lokwakha, inani le-putty powder likhulu kakhulu, cishe i-90% isetshenziselwa i-putty powder, kanti enye isetshenziselwa udaka lukasimende neglue.
2. Kunezinhlobo ezimbalwa ze-hydroxypropyl methylcellulose (HPMC), futhi yini umehluko ekusetshenzisweni kwazo?
——Impendulo: I-HPMC ingahlukaniswa ngohlobo olusheshayo nohlobo lwe-hot-melt. Imikhiqizo yohlobo olusheshayo ihlakazeka ngokushesha emanzini abandayo bese inyamalala emanzini. Ngalesi sikhathi, uketshezi alunayo i-viscosity, ngoba i-HPMC ihlakazekile kuphela emanzini futhi ayinakho ukuchithwa kwangempela. Ngemuva kwemizuzu emi-2, i-viscosity yoketshezi yanda kancane kancane, yakha i-viscous colloid esobala. Imikhiqizo encibilikisa ukushisa, lapho ihlangana namanzi abandayo, ingahlakazwa ngokushesha emanzini ashisayo, futhi inyamalale emanzini ashisayo. Lapho izinga lokushisa lehla liye ezingeni lokushisa elithile (umkhiqizo wenkampani yethu ungama-degree Celsius angama-65), i-viscosity ibonakala kancane ize yakhe i-viscous colloid esobala. Uhlobo lwe-hot-melt lungasetshenziswa kuphela ku-putty powder nodaka. Ku-glue ewuketshezi nopende, i-clumping phenomenon izokwenzeka futhi ayikwazi ukusetshenziswa. Uhlobo olusheshayo lunohlu olubanzi lwezinhlelo zokusebenza. Ingasetshenziswa ku-putty powder nodaka, kanye ne-glue ewuketshezi nopende, ngaphandle kokuphikisana.
3. Yiziphi izindlela zokuchithwa kwe-hydroxypropyl methylcellulose (HPMC)?
——Impendulo: 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 zichazwa kanje:
1) Faka inani elidingekayo lamanzi ashisayo esitsheni bese ushisa kuze kufike ku-70°C. I-hydroxypropyl methylcellulose yengezwa kancane kancane ngokunyakaziswa kancane, ekuqaleni i-HPMC yantanta phezu kwamanzi, bese kancane kancane yakha udaka, olwapholiswa ngokushukumisa.
2), engeza i-1/3 noma i-2/3 yenani elidingekayo lamanzi esitsheni, futhi uyishise ibe ngu-70 ° C, ngokwendlela ye-1), uhlakaze i-HPMC, ulungise udaka lwamanzi ashisayo; bese ufaka inani elisele lamanzi abandayo emanzini ashisayo Ku-slurry, ingxube yayipholile ngemva kokugqugquzela.
Indlela yokuxuba umpuphu: Xuba i-HPMC powder nenani elikhulu lezinye izinto eziyimpuphu, xuba kahle ne-mixer, bese ufaka amanzi ukuze uncibilike, bese i-HPMC ingancibilika ngalesi sikhathi ngaphandle kokuhlangana ndawonye, ngoba kune-HPMC encane kuphela kuzo zonke. ikona elincane elincane. I-powder izoncibilika ngokushesha lapho ihlangana namanzi. ——Le ndlela isetshenziswa abakhiqizi be-putty powder kanye nodaka. [I-Hydroxypropyl methylcellulose (HPMC) isetshenziswa njenge-thickener kanye ne-ejenti egcina amanzi ku-putty powder mortar. ]
4. Indlela yokwahlulela ikhwalithi ye-hydroxypropyl methylcellulose (HPMC) kalula nangendlela enembile?
——Impendulo: (1) Ubumhlophe: Nakuba ubumhlophe bungakwazi ukunquma ukuthi i-HPMC kulula yini ukuyisebenzisa, futhi uma isicwebezeli sengezwa kunqubo yokukhiqiza, sizothinta ikhwalithi yayo. Nokho, iningi lemikhiqizo emihle inobumhlophe obuhle. (2) Ukulunga: Ubucwebe be-HPMC ngokuvamile buba yi-80 mesh kanye ne-100 mesh, kanye ne-120 mesh mincane. Iningi le-HPMC elikhiqizwe e-Hebei linezikhala ezingama-80. Ubuhle obuhle, bungcono. (3) Ukudluliselwa: Faka i-hydroxypropyl methylcellulose (HPMC) emanzini ukuze wenze i-colloid esobala, futhi uhlole ukudluliswa kwayo. Lapho ukudluliselwa kuphezulu, kungcono, okubonisa ukuthi kunezinto ezincane ezingancibiliki kuyo . Ukungena kwe-reactor eqondile ngokuvamile kuhle, futhi i-reactor evundlile yimbi kakhulu, kodwa ngeke kushiwo ukuthi ikhwalithi ye-reactor eqondile ingcono kunaleyo ye-reactor evundlile, futhi kunezici eziningi ezinquma ikhwalithi yomkhiqizo. 4 Amandla adonsela phansi athile makhulu, ngokuvamile ngenxa yokuthi okuqukethwe kwe-hydroxypropyl kuyo kuphezulu, futhi okuqukethwe kwe-hydroxypropyl kuphezulu, ukugcinwa kwamanzi kungcono.
5. Inani le-hydroxypropyl methylcellulose (HPMC) ku-putty powder?
——Impendulo: Inani le-HPMC elisetshenziswa ekusebenzeni okungokoqobo 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, iningi le-putty powder e-Beijing liyi-5 kg; iningi lempushana e-Guizhou lingama-5 kg ehlobo kanye no-4.5 kg ebusika;
6. Iyiphi i-viscosity efanele ye-hydroxypropyl methylcellulose (HPMC)?
——Impendulo: I-putty powder ivamise ukuba ngu-100,000 yuan, kanti udaka lufuna kakhulu, futhi kulula ukulisebenzisa kumayuan angu-150,000. Ngaphezu kwalokho, indima ebaluleke kakhulu ye-HPMC ukugcina amanzi, okulandelwa ukujiya. Ku-putty powder, inqobo nje uma ukugcinwa kwamanzi kuhle futhi i-viscosity iphansi (70,000-80,000), kungenzeka futhi. Yiqiniso, i-viscosity iphakeme, futhi ukugcinwa kwamanzi okuhlobene kungcono. Lapho i-viscosity idlula i-100,000, umphumela we-viscosity ekugcinweni kwamanzi awuningi.
7. Yiziphi izinkomba zobuchwepheshe eziyinhloko ze-hydroxypropyl methylcellulose (HPMC)?
——Impendulo: Okuqukethwe kwe-Hydroxypropyl kanye ne-viscosity, abasebenzisi abaningi banendaba nalezi zinkomba ezimbili. Ukuphakama kokuqukethwe kwe-hydroxypropyl, kuba ngcono ukugcinwa kwamanzi. I-viscosity ephezulu, ukugcinwa kwamanzi, ngokuqhathaniswa (kunokuba kube ngokuphelele) okungcono kakhulu, kanye ne-viscosity ephezulu, ukusetshenziswa okungcono kudaka lukasimende.
8. Yiziphi izinto zokusetshenziswa eziyinhloko ze-hydroxypropyl methylcellulose (HPMC)?
—— A: Izinto zokusetshenziswa eziyinhloko ze-hydroxypropyl methylcellulose (HPMC): ukotini ocolisisiwe, i-methyl chloride, i-propylene oxide, ezinye izinto zokusetshenziswa zifaka i-flake alkali, i-asidi, i-toluene, i-isopropanol, njll.
9. Iyiphi indima eyinhloko ye-HPMC ekusetshenzisweni kwe-putty powder, futhi ingabe kukhona amakhemikhali?
——Impendulo: I-HPMC inemisebenzi emithathu yokujiya, ukugcinwa kwamanzi nokwakha kumpushana oyimpuphu. Ukuqina: I-Cellulose ingajiywa ukuze imiswe, igcine iyunifomu yesisombululo futhi ingaguquki, futhi imelane nokuwohloka. Ukugcinwa kwamanzi: Yenza i-putty powder yome kancane, futhi usize ukusabela kwe-ash calcium 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 yokusiza kuphela. Ukwengeza amanzi ku-putty powder nokuyibeka odongeni ukusabela kwamakhemikhali. Ngenxa yokwakheka kwezinto ezintsha, thatha i-putty powder odongeni, uyigaye ibe yimpushana, bese uyisebenzisa futhi. Ngeke isebenze, ngoba izinto ezintsha (i-calcium carbonate) zenziwe. ) phezulu. Izingxenye eziyinhloko zempushana ye-ash calcium yilezi: ingxube ye-Ca(OH)2, i-CaO nenani elincane le-CaCO3, i-CaO+H2O=Ca(OH)2 —Ca(OH)2+CO2=CaCO3↓+H2O Ash calcium emanzini nasemoyeni Ngaphansi kwesenzo se-CO2, i-calcium carbonate ikhiqizwa, kuyilapho i-HPMC igcina amanzi kuphela futhi isiza ukusabela okungcono kwe-ash calcium, futhi ayihlanganyeli kunoma yikuphi ukusabela ngokwayo.
10. I-HPMC i-non-ionic cellulose ether, ngakho-ke yini engeyona i-ionic?
- Impendulo: Ngokwemigomo ye-layman, ama-non-ion yizinto ezingafaki i-ioni emanzini. I-ionization isho inqubo lapho i-electrolyte ihlukaniswa khona ibe ama-ion ashajwayo ahambayo entweni ethile encibilikayo (njengamanzi, utshwala). Isibonelo, i-sodium chloride (NaCl), usawoti odliwa nsuku zonke, uncibilika emanzini futhi u-ionize ukukhiqiza ama-ion sodium (Na+) ahamba ngokukhululeka kanye nama-chloride ion (Cl) ashajwa ngokungalungile. Okusho ukuthi, uma i-HPMC ifakwa emanzini, ayihlukanisi ibe ama-ion ashajiwe, kodwa ikhona ngendlela yama-molecule.
Isikhathi sokuthumela: Oct-17-2022