1. Iyini ukusetshenziswa okuyinhloko kwei-hydroxypropyl methylcellulose (HPMC)?
I-HPMC isetshenziswa kabanzi ezintweni zokwakha, ezinengilazi, izinsalela zokwenziwa, izitsha zobumba, imithi, ukudla, izindwangu, ezolimo, izimonyo, ugwayi nezinye izimboni. I-HPMC ingahlukaniswa ngebanga lokwakha, ibanga lokudla kanye nebanga lezemithi ngokwenhloso. Njengamanje, iningi lemikhiqizo yasekhaya isezingeni lokwakha. Ebangeni lokwakha, i-putty powder isetshenziswa ngenani elikhulu, cishe i-90% isetshenziselwa i-putty powder, kanti enye isetshenziselwa udaka lukasimende.
2. Liyini iphunga le-hydroxypropyl methylcellulose (HPMC)?
I-HPMC ekhiqizwa indlela yokuncibilikisa isebenzisa i-toluene ne-isopropanol njengezincibilikisi. Uma ukugeza kungalungile kakhulu, kuzoba nephunga elisele.
3. Yiziphi izindlela zokuchithwa kwe-hydroxypropyl methylcellulose (HPMC)?
Indlela yokuchithwa kwamanzi ashisayo: Njengoba i-HPMC ingancibiliki emanzini ashisayo, i-HPMC ingahlakazwa ngokulinganayo 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 ngaphansi kokunyakaziswa kancane, ekuqaleni i-HPMC yantanta phezu kwamanzi, bese kancane kancane yakha i-slurry, eyapholiswa ngaphansi kokunyakaziswa.
2), engeza i-1/3 noma i-2/3 yenani elidingekayo lamanzi esitsheni, bese ushisisa ku-70 ° C, uhlakaze i-HPMC ngokwendlela ye-1), futhi ulungise udaka lwamanzi ashisayo; bese ufaka inani elisele lamanzi abandayo emanzini ashisayo ashisayo, ingxube ipholile ngemva kokugqugquzela.
Indlela yokuxuba ufulawa: hlanganisa i-HPMC powder nenani elikhulu lezinye izinto eziyimpuphu, xuba kahle ne-mixer, bese ufaka amanzi ukuze uncibilike, khona-ke i-HPMC ingancibilika ngalesi sikhathi ngaphandle kokuhlanganiswa, ngoba kukhona i-HPMC encane kuwo wonke amakhona amancane I-Powder, izoncibilika ngokushesha lapho ihlangana namanzi. ——Abakhiqizi bempuphu nodaka basebenzisa le ndlela. [I-Hydroxypropyl methylcellulose (HPMC) isetshenziswa njenge-thickener kanye ne-ejenti yokugcina amanzi kudaka lwe-putty powder. ]
4. Indlela yokwahlulela ikhwalithi ye-hydroxypropyl methylcellulose (HPMC) kalula nangendlela enembile?
(1) Ubumhlophe: Nakuba ubumhlophe bungakwazi ukunquma ukuthi i-HPMC kulula yini ukuyisebenzisa, futhi uma ama-ejenti amhlophe engezwa phakathi nenqubo yokukhiqiza, izothinta ikhwalithi yayo. Nokho, iningi lemikhiqizo emihle inobumhlophe obuhle.
(2) Ubuhle: Ubucwebe be-HPMC ngokuvamile buba ne-80 mesh kanye ne-100 mesh, kanye ne-120 mesh mincane. Iningi le-HPMC elikhiqizwe e-Hebei linezikhala ezingama-80. Ubuhle obuhle, uma sikhuluma nje, kuba ngcono.
(3) Ukudlulisa ukukhanya: bekai-hydroxypropyl methylcellulose (HPMC)emanzini ukwenza i-colloid ebonakalayo, futhi ubheke ukudluliswa kwayo kokukhanya. Ukudlulisa ukukhanya okukhulu, kungcono, okubonisa ukuthi kukhona okuncane okungancibiliki kuwo. . Ukufinyeleleka kwama-reactor aqondile ngokuvamile kuhle, futhi lokho kwama-reactor avundlile kubi kakhulu, kodwa akusho ukuthi ikhwalithi yama-reactor aqondile ingcono kunaleyo yama-reactor avundlile, futhi ikhwalithi yomkhiqizo inqunywa izici eziningi.
(4) Amandla adonsela phansi athize: Uma umkhulu amandla adonsela phansi athile, uyasinda kakhulu. Ukucaciswa kukhulu, ngokuvamile ngenxa yokuthi okuqukethwe kweqembu le-hydroxypropyl kulo kuphezulu, futhi okuqukethwe kweqembu le-hydroxypropyl kuphezulu, ukugcinwa kwamanzi kungcono.
5. Uyini umehluko phakathi kohlobo olusheshayo lwamanzi abandayo kanye nohlobo oluncibilikayo lwe-hydroxypropyl methylcellulose ohlelweni lokukhiqiza?
Uhlobo oluhlakazeka ngokushesha lwe-HPMC luphathwa phezulu nge-glyoxal, futhi luhlakazeka ngokushesha emanzini abandayo, kodwa aluncibiliki ngempela. Incibilika kuphela lapho i-viscosity ikhula. Uhlobo olusheshayo alunakho ukwelashwa okungaphezulu nge-glyoxal. Uma inani le-glyoxal likhulu, ukuhlakazeka kuzoshesha, kodwa i-viscosity izokhula kancane, futhi uma inani lincane, okuphambene kuzoba yiqiniso.
6. Iyiphi i-viscosity efanele ye-hydroxypropyl methylcellulose (HPMC)?
I-putty powder ivamise ukuba ngu-100,000 yuan, futhi izidingo zodaka ziphezulu, futhi i-150,000 yuan iyadingeka ukuze isetshenziswe kalula. Ngaphezu kwalokho, umsebenzi obaluleke kakhulu we-HPMC ukugcinwa kwamanzi, okulandelwa ukujiya. Ku-putty powder, inqobo nje uma ukugcinwa kwamanzi kuhle futhi i-viscosity iphansi (70,000-80,000), kungenzeka futhi. Yiqiniso, ukuphakama kwe-viscosity, kungcono ukugcinwa kwamanzi okuhlobene. Lapho i-viscosity idlula i-100,000, i-viscosity izothinta ukugcinwa kwamanzi. Akusenani.
7. Yiziphi izinkomba zobuchwepheshe eziyinhloko ze-hydroxypropyl methylcellulose (HPMC)?
Okuqukethwe kwe-Hydroxypropyl kanye ne-viscosity, abantu abaningi bakhathazekile ngalezi zinkomba ezimbili. Labo abanokuqukethwe okuphezulu kwe-hydroxypropyl ngokuvamile banokugcinwa kwamanzi okungcono. Le ene-viscosity ephezulu inokugcinwa kwamanzi okungcono, uma kuqhathaniswa (hhayi ngokuphelele), futhi leyo ene-viscosity ephezulu isetshenziswa kangcono odakeni lukasimende.
8. Yiziphi izinto zokusetshenziswa eziyinhloko ze-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-asidi, i-toluene, isopropanol, njll.
9. Uyini umsebenzi omkhulu wokusetshenziswa kweI-HPMCku-putty powder, futhi ingabe kwenzeka ngamakhemikhali?
Ku-putty powder, i-HPMC idlala izindima ezintathu zokuqina, ukugcinwa kwamanzi kanye nokwakha.
Ukuqina: I-Cellulose ingajiywa ukuze imise futhi igcine umfaniswano wekhambi phezulu naphansi, futhi imelane nokuwohloka.
Ukugcinwa kwamanzi: yenza i-putty powder yome kancane, futhi usize i-calcium yomlotha ukuba isabele ngaphansi kwesenzo samanzi.
Ukwakhiwa: I-Cellulose inomphumela wokugcoba, ongenza i-putty powder ibe nokwakhiwa okuhle.
Ukwengeza amanzi ku-putty powder nokuyibeka odongeni ukusabela kwamakhemikhali, ngoba kwakhiwa izinto ezintsha. Uma ususa i-putty powder odongeni odongeni, uyigaye ibe yimpuphu, futhi uyisebenzise futhi, ngeke isebenze ngoba izinto ezintsha (i-calcium carbonate) zenziwe. ) futhi.
Izingxenye eziyinhloko zempushana ye-ash calcium 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 isemanzini nasemoyeni Ngaphansi kwesenzo se-CO2, i-calcium carbonate iyakhiqizwa, kuyilapho i-HPMC igcina noma iyiphi i-calcium ekuphenduleni, ayisizi kuphela ukusabela kwamanzi, futhi ayisizi.
10. I-HPMC iyi-ether ye-cellulose engeyona i-ionic, ngakho-ke yini engeyona i-ionic?
Ngokwemigomo ye-layman, okungezona ama-ion yizinto ezingafaki ionisi emanzini. I-ionization isho inqubo lapho i-electrolyte ihlukaniswa khona ibe ama-ion ashajiwe akwazi ukuhamba ngokukhululeka ku-solvent ethile (njengamanzi, utshwala). Isibonelo, i-sodium chloride (NaCl), usawoti esiwudla nsuku zonke, uncibilika emanzini bese u-ionize ukukhiqiza ama-ion sodium (Na+) ashajwa kahle nama-chloride ions (Cl) ashajwe ngokukhululeka. Okusho ukuthi, lapho i-HPMC ifakwa emanzini, ngeke ihlukane ibe ama-ion ashajiwe, kodwa ibe khona ngendlela yama-molecule.
11. Lihlobene nani izinga lokushisa lejeli le-hydroxypropyl methylcellulose?
Izinga lokushisa lejeli le-HPMC lihlobene nokuqukethwe kwayo kwe-methoxy, ukwehla kokuqukethwe kwe-methoxy, izinga lokushisa lejeli liphezulu.
12. Ingabe kukhona ubudlelwano phakathi kokwehla kwe-putty powder ne-HPMC?
Ukulahlekelwa kwe-powder kwe-putty powder kuhlobene kakhulu nekhwalithi ye-ash calcium, futhi akuhlangene kangako ne-HPMC. I-calcium ephansi ye-calcium empunga kanye nesilinganiso esingalungile se-CaO ne-Ca(OH)2 ku-calcium empunga kuzodala ukulahleka kwempushana. Uma kunokuthile okuphathelene ne-HPMC, khona-ke uma i-HPMC inokugcinwa kwamanzi okungalungile, izophinde ibangele ukulahlekelwa kwempushana.
13. Uyini umehluko phakathi kohlobo olusheshayo lwamanzi abandayo kanye nohlobo oluncibilikayo lwe-hydroxypropyl methylcellulose ohlelweni lokukhiqiza?
Uhlobo lokuhlakazeka okusheshayo lweI-HPMCiphathwa nge-glyoxal, futhi ihlakazeka ngokushesha emanzini abandayo, kodwa ayincibiliki ngempela. Incibilika kuphela lapho i-viscosity ikhula. Uhlobo olusheshayo alunakho ukwelashwa okungaphezulu nge-glyoxal. Uma inani le-glyoxal likhulu, ukuhlakazeka kuzoshesha, kodwa i-viscosity izokhula kancane, futhi uma inani lincane, okuphambene kuzoba yiqiniso.
Isikhathi sokuthumela: Apr-25-2024