Yiziphi izindlela zokuchithwa kwe-hydroxypropyl methylcellulose HPMC?

1. Yiziphi izindlela zokuchithwa kwe-hydroxypropyl methylcellulose HPMC?

Impendulo: 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), 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 uphuphu: hlanganisa i-HPMC powder nenani elikhulu lezinye izinto eziyimpuphu, xuba kahle ne-mixer, bese wengeza amanzi ukuze uhlakaze, bese i-HPMC ingancibilika ngalesi sikhathi ngaphandle kokuhlanganiswa, ngoba kune-HPMC encane kuphela kuwo wonke amancanyana. I-corner 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.

2) Faka inani elidingekayo lamanzi ashisayo esitsheni bese ushisa kuze kufike ku-70°C.I-hydroxypropyl methylcellulose yengezwe kancane kancane ngaphansi kokunyakaziswa kancane, ekuqaleni i-HPMC yantanta phezu kwamanzi, bese kancane kancane yakha udaka, olwapholiswa ngaphansi kokunyakaziswa.

2. Kunezinhlobo ezimbalwa ze-hydroxypropyl methylcellulose HPMC.Uyini umehluko ekusetshenzisweni kwabo?

Impendulo: I-Hydroxypropyl methylcellulose HPMC ingahlukaniswa ngohlobo olusheshayo kanye nohlobo lokuqedwa okushisayo.Imikhiqizo yohlobo olusheshayo ihlakazeka ngokushesha emanzini abandayo bese inyamalala emanzini.Ngalesi sikhathi, uketshezi alunayo i-viscosity, ngoba i-HPMC ihlakazekile emanzini kuphela, akukho ukuncibilika kwangempela.Cishe imizuzu emi-2, i-viscosity yoketshezi iyanda kancane kancane, yakha i-viscous colloid esobala.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 nesenzakalo sokuqoqa futhi ngeke sisetshenziswe.Uhlobo olusheshayo lunohlu olubanzi lwezinhlelo zokusebenza.Ingasetshenziswa ku-putty powder nodaka, kanye ne-glue ewuketshezi nopende, ngaphandle kokuphikisana.

3. Iyini ukusetshenziswa okuyinhloko kwe-hydroxypropyl methylcellulose (HPMC)?

Impendulo: I-HPMC isetshenziswa kabanzi ezintweni zokwakha, okokugqoka, ama-synthetic resin, izitsha zobumba, imithi, ukudla, izindwangu, ezolimo, izimonyo, ugwayi nezinye izimboni.I-HPMC ingahlukaniswa: Ibanga lokwakha, ibanga lokudla kanye nebanga lezemithi ngokuya ngokusetshenziswa.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.

4. Indlela yokwahlulela ikhwalithi ye-hydroxypropyl methylcellulose (HPMC) kalula nangendlela enembile?

Impendulo: (1) Amandla adonsela phansi athize: Uma amandla adonsela phansi athile emakhulu, esindayo siba ngcono.Isilinganiso sikhulu, ngokuvamile ngoba

(2) 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.

(3) 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.Ukucoleka kokucoleka, kuba ngcono ngokujwayelekile.

(4) Ukudlulisa ukukhanya: faka i-hydroxypropyl methylcellulose (HPMC) emanzini ukuze wenze i-colloid ekhanyelayo, futhi uhlole ukudluliswa kwayo kokukhanya.Ukuphakama kokudlulisa ukukhanya, kungcono, okubonisa ukuthi kukhona okuncane okungancibiliki kuwo..Ukufinyeleleka kwereactor eqondile ngokuvamile kuhle, futhi lokho kwereactor evundlile kubi kakhulu, kodwa akusho ukuthi ikhwalithi yereactor eqondile ingcono kunele reactor evundlile, futhi kunezici eziningi zokunquma ikhwalithi yomkhiqizo. .Okuqukethwe kweqembu le-hydroxypropyl kuwo kuphezulu, futhi okuqukethwe kweqembu le-hydroxypropyl kuphezulu, nokugcinwa kwamanzi kungcono.

5. Yiziphi izinkomba zobuchwepheshe eziyinhloko ze-hydroxypropyl methylcellulose (HPMC)?

Impendulo: Okuqukethwe kwe-Hydroxypropyl kanye ne-viscosity, abasebenzisi abaningi bakhathazekile ngalezi zinkomba ezimbili.Labo abanokuqukethwe okuphezulu kwe-hydroxypropyl ngokuvamile banokugcinwa kwamanzi okungcono.I-viscosity ephezulu, ukugcinwa kwamanzi, ngokuqhathaniswa (kunokuba

6. Iyiphi i-viscosity efanele ye-hydroxypropyl methylcellulose (HPMC)?

Impendulo: I-putty powder ngokuvamile i-yuan engu-100,000, futhi izidingo zodaka ziphakeme, futhi kulula ukusebenzisa i-yuan engu-150,000.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.Ngokuphelele) futhi kungcono, futhi i-viscosity iphakeme, futhi kungcono ukuyisebenzisa odakeni lukasimende.

7. Yiziphi izinto zokusetshenziswa eziyinhloko ze-hydroxypropyl methylcellulose (HPMC)?

Impendulo: Izinto zokusetshenziswa eziyinhloko ze-hydroxypropyl methylcellulose (HPMC): ukotini ocolile, i-methyl chloride, i-propylene oxide, nezinye izinto zokusetshenziswa, i-caustic soda, i-asidi, i-toluene, i-isopropanol, njll.

8. Uyini umsebenzi oyinhloko wokusetshenziswa kwe-HPMC ku-putty powder, futhi ingabe kwenzeka ngamakhemikhali?

Impendulo: Ku-putty powder, i-HPMC idlala izindima ezintathu zokuqina, ukugcinwa kwamanzi 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 ze-ash calcium powder 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 isemanzini nasemoyeni Ngaphansi kwesenzo se-CO2, i-calcium carbonate ikhiqizwa, kuyilapho i-HPMC igcina amanzi kuphela, isiza ukusabela okungcono kwe-ash calcium, futhi ayihlanganyeli kunoma yikuphi ukusabela ngokwayo.

9. I-HPMC iyi-ether ye-cellulose engeyona i-ionic, ngakho-ke yini engeyona i-ionic?

Impendulo: Ngokwemigomo ye-layman, i-non-ion yinto engeke i-ionze 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 futhi 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.

10. Ingabe kukhona ubudlelwano phakathi kokwehla kwe-putty powder ne-HPMC?

Impendulo: 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.

11. Lihlobene nani izinga lokushisa lejeli le-hydroxypropyl methylcellulose?

Impendulo: Izinga lokushisa lejeli le-HPMC lihlobene nokuqukethwe kwayo kwe-methoxy, ukwehla kokuqukethwe kwe-methoxy↓, kukhuphuka izinga lokushisa lejeli.

12. Ungayikhetha kanjani i-hydroxypropyl methylcellulose (HPMC) efanele ngezinhloso ezahlukene?

Impendulo: Ukusetshenziswa kwe-putty powder: izidingo ziphansi, futhi i-viscosity yi-100,000, okwanele.Okubalulekile wukugcina amanzi kahle.Ukusetshenziswa kodaka: izidingo eziphakeme, i-viscosity ephezulu, i-150,000 ingcono.Ukusetshenziswa kweglue: imikhiqizo esheshayo ene-viscosity ephezulu iyadingeka.

13. Uyini umehluko phakathi kohlobo olusheshayo lwamanzi abandayo kanye nohlobo oluncibilikayo lwe-hydroxypropyl methylcellulose ohlelweni lokukhiqiza?

Impendulo: Uhlobo olusheshayo lwamanzi abandayo lwe-HPMC luphathwa phezulu nge-glyoxal, futhi luhlakazeka ngokushesha emanzini abandayo, kodwa aluncibiliki ngempela.Incibilika kuphela lapho i-viscosity ikhula.Izinhlobo ezincibilikayo ezishisayo aziphathwa nge-glyoxal.Uma inani le-glyoxal likhulu, ukuhlakazeka kuzoshesha, kodwa i-viscosity izokhula kancane, futhi uma inani lincane, okuphambene kuzoba yiqiniso.

14. Liyini iphunga le-hydroxypropyl methylcellulose (HPMC)?

Impendulo: I-HPMC ekhiqizwa indlela ye-solvent isebenzisa i-toluene ne-isopropanol njengezincibilikisi.Uma ukugeza kungalungile kakhulu, kuzoba nephunga elisele.

15. Yiliphi elinye igama le-hydroxypropyl methylcellulose?

Impendulo: Hydroxypropyl Methyl Cellulose, IsiNgisi: Hydroxypropyl Methyl Cellulose Isifinyezo: HPMC noma MHPC Isibizo: Hypromellose;i-cellulose hydroxypropyl methyl ether;I-Hypromellose, i-Cellulose, i-2-hydroxypropyl methyl Cellulose ether.I-Cellulose hydroxypropyl methyl ether Hyprolose.

16. Yini okufanele inakwe ekusetshenzisweni kwangempela kobudlelwane phakathi kwe-viscosity nezinga lokushisa le-HPMC?

Impendulo: I-viscosity ye-HPMC ihambisana ngokuphambene nezinga lokushisa, okusho ukuthi, i-viscosity iyanda njengoba izinga lokushisa liyancipha.I-viscosity yomkhiqizo esivame ukubhekisela kuwo ibhekisela kumphumela wokuhlolwa wesisombululo sawo samanzi esingu-2% ezingeni lokushisa elingu-20 degrees Celsius.

Ekusetshenzisweni okusebenzayo, kufanele kuqashelwe ukuthi ezindaweni ezinomehluko omkhulu wokushisa phakathi kwehlobo nobusika, kunconywa ukusebenzisa i-viscosity ephansi kakhulu ebusika, evumelana kakhulu nokwakhiwa.Uma kungenjalo, lapho izinga lokushisa liphansi, i-viscosity ye-cellulose izokhula, futhi ukuzwa kwesandla kuyoba nzima lapho kukhuhla.I-viscosity ephakathi: 75000-100000 Isetshenziselwa ikakhulukazi i-putty.Isizathu: ukugcinwa kahle kwamanzi.I-viscosity ephezulu: 150000-200000 Ikakhulu isetshenziselwa i-polystyrene izinhlayiyana ezishisayo zokufakelwa udaka i-glue powder kanye ne-vitrified microbead thermal insulation mortar.Isizathu: i-viscosity ephezulu, udaka akulula ukuwisa, ukulenga, nokuthuthukisa ukwakhiwa.

17. Ukusetshenziswa kwe-HPMC ku-putty powder, yisiphi isizathu sama-bubbles ku-putty powder?

Impendulo: Ku-putty powder, i-HPMC idlala izindima ezintathu zokuqina, ukugcinwa kwamanzi nokwakha.Ungabambi iqhaza kunoma yikuphi ukusabela.Izizathu zamabhamuza: 1. Faka amanzi amaningi kakhulu.2. Ungqimba olungezansi alomile, vele uhlubule olunye ungqimba phezulu, futhi kulula ukucweba.