1. Iyini ukusetshenziswa okuyinhloko kwei-hydroxypropyl methylcellulose (HPMC)?
IHydroxypropyl methylcellulose isetshenziswa kabanzi ezintweni zokwakha, ezinengilazi, izinsalela zokwenziwa, izitsha zobumba, imithi, ukudla, izindwangu, ezolimo, izimonyo, ugwayi nezinye izimboni. IHydroxypropyl methylcellulose ingahlukaniswa ngebanga lokwakha, ibanga lokudla kanye nebanga lezemithi ngokuya ngokusebenza kwayo. 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 neglue.
2. Kunezinhlobo ezimbalwa ze-hydroxypropyl methylcellulose (HPMC), futhi yimuphi umehluko ekusetshenzisweni kwazo?
I-HPMC ingahlukaniswa ngohlobo olusheshayo kanye nohlobo lokuqedwa okushisayo. Imikhiqizo yohlobo olusheshayo ihlakazeka ngokushesha lapho ihlangana namanzi abandayo bese inyamalala emanzini. Ngalesi sikhathi, uketshezi alunayo i-viscosity ngoba i-HPMC ihlakazekile emanzini ngaphandle kokuhlakazeka kwangempela. Ngemuva kwemizuzu emi-2, i-viscosity yoketshezi iyanda kancane kancane, yakha i-viscous colloid ebonakalayo. Imikhiqizo encibilikayo eshisayo, lapho ihlangene namanzi abandayo, ingahlakazeka ngokushesha emanzini ashisayo futhi inyamalale emanzini ashisayo. Lapho izinga lokushisa lehlela ezingeni elithile lokushisa, i-viscosity izovela kancane kancane ize yakhe i-viscous colloid ebonakalayo. Uhlobo lwe-hot-melt lungasetshenziswa kuphela ku-putty powder nodaka. Ku-glue ewuketshezi nopende, kuzoba khona umcimbi wokuqoqa futhi awukwazi 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)?
Indlela yokuchithwa kwamanzi ashisayo: Njengoba i-HPMC ingancibiliki 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 ngaphansi kokunyakaziswa kancane, ekuqaleni i-HPMC yantanta phezu kwamanzi, bese kancane kancane yakha i-slurry, eyapholiswa ngaphansi kokunyakaziswa.
2) Faka i-1/3 noma i-2/3 yenani elidingekayo lamanzi esitsheni, bese uyishisa ibe ngu-70 ° C, ngokwendlela ye-1), uhlakaze i-HPMC ukuze ulungiselele udaka lwamanzi ashisayo; bese ufaka inani elisele lamanzi abandayo ku-slurry wamanzi 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 yokugcinwa kwamanzi odongeni 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) Ukulunga: Ubucwebe be-HPMC ngokuvamile buba nama-mesh angu-80 kanye ne-100 mesh, 120 mesh mincane, futhi iningi le-HPMC elikhiqizwa e-Hebei lingama-80 mesh. Ubuhle obuhle, uma sikhuluma nje, kuba ngcono.
(3) Ukudluliselwa: Faka i-hydroxypropyl methylcellulose (HPMC) emanzini ukuze wenze i-colloid esobala, futhi uhlole ukudluliswa kwayo. Ukuphakama kokudlulisa, kungcono, okubonisa ukuthi kukhona okuncane okungancibiliki kuyo. 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. Iyini inani le-hydroxypropyl methylcellulose (HPMC) ku-putty powder?
Inani le-HPMC elisetshenziselwa izicelo ezisebenzayo liyahlukahluka kuye ngokuthi isimo sezulu, izinga lokushisa, izinga le-calcium yomlotha wendawo, ifomula ye-putty powder kanye "nekhwalithi edingekayo kumakhasimende". Ngokuvamile, phakathi 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; inani le-putty powder e-Yunnan lincane kakhulu, ngokuvamile li-3 kg kuya ku-4 kg, njll.
6. Iyiphi i-viscosity efanele ye-hydroxypropyl methylcellulose (HPMC)?
Impushana ye-putty ngokuvamile yanele ama-yuan angu-100,000, 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, abasebenzisi 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 ezisetshenziswayo eziyinhlokoi-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 oyinhloko wokusetshenziswa kwe-HPMC ku-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. I-HPMC ayibambi iqhaza kunoma yikuphi ukusabela kwamakhemikhali, kodwa idlala indima yokusiza kuphela. 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-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, 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, niniI-HPMCifakwe emanzini, ngeke ihlukane ibe ama-ion ashajiwe, kodwa ibe khona ngendlela yama-molecule.
Isikhathi sokuthumela: Apr-28-2024