1. Yiluphi uhlelo lokusebenza oluphambili lwe-hydroxypropyllll methylcellulose (HPMC)?
I-HPMC isetshenziswa kabanzi ezintweni zokwakha, ukumboza, ama-desin okwenziwa, ama-ceramics, umuthi, ukudla, izindwangu, amazweli, ugwayi kanye nezinye izimboni. I-HPMC ingahlukaniswa iba ibanga lokwakha, ibanga lokudla kanye nebanga lezemithi ngokwenhloso. Njengamanje, iningi lemikhiqizo yasekhaya ibangeni lokwakha. Ebangeni lokwakha, i-putty powder isetshenziswa ngenani elikhulu, cishe ama-90% asetshenziselwa i-putty powder, futhi konke kusetshenziselwa udaka ngosimende neglue.
2. Kunezinhlobo eziningana ze-hydroxypropyll methylcellulose (HPMC), futhi yini umehluko ekusebenziseni kwazo?
I-HPMC ingahlukaniswa ngohlobo olusheshayo kanye nohlobo lokuqothula. Umkhiqizo wohlobo olusheshayo uhlakazeka ngokushesha emanzini abandayo bese uyanyamalala emanzini. Ngalesi sikhathi, uketshezi alunakubonakala ngoba i-HPMC ihlakazeka kuphela emanzini ngaphandle kokuchithwa kwangempela. Cishe imizuzu emi-2, i-viscosity yoketshezi inyuka kancane kancane, yakha i-colloid esobala ye-volcous. Imikhiqizo eshisayo ehlekisayo, lapho ihlangana namanzi abandayo, ingahlakazeka ngokushesha emanzini ashisayo bese inyamalala emanzini ashisayo. Lapho amazinga okushisa ehla emazingeni okushisa athile, i-viscosity izovela kancane kancane ize ibe yi-colloid esobala ye-viscous. Uhlobo olushisayo olushisayo lungasetshenziswa kuphela ku-putty powder nodaka. Ku-glue kefu upende, kuzoba khona into ehlelekile futhi ngeke isetshenziswe. Uhlobo olusheshayo lunebanga elibanzi lezicelo. Ingasetshenziswa ku-putty powder kanye nodaka, kanye ne-glue key upende, ngaphandle kokuphikisana.
3. Iziphi izindlela zokuchithwa kwe-hydroxypropyllyllose methylcellulose (HPMC)?
Indlela eshisayo yokuchithwa kwamanzi Izindlela ezimbili ezijwayelekile zichazwa ngale ndlela elandelayo:
1) Faka inani elidingekayo lamanzi ashisayo esitsheni bese usishisa cishe ku-70 ° C. I-hydroxypropyll methylcellose yangezwa kancane kancane ngaphansi kokuvuselelwa kancane, ekuqaleni i-HPMC yantanta ebusweni bamanzi, bese kancane kancane yakha kancane kancane, eyayipholile ngaphansi komoya.
2), engeza u-1/3 noma 2/3 wenani elidingekayo lamanzi esitsheni, bese usishisa ku-70 ° C, usabalalisa i-HPMC ngokwendlela ye-1), futhi ulungiselele ama-slurry amanzi ashisayo; Ngemuva kwalokho engeza inani elisele lamanzi abandayo kuya ku-Slurry yamanzi ashisayo, ingxube ipholile ngemuva kokuvusa.
Indlela yokuxuba ye-powder: hlanganisa i-hpmc powder enesamba esikhulu sezinye izinto eziyimpungule, bese ufaka amanzi ukuze uncibilike, khona-ke i-HPMC ingachithwa ngalesi sikhathi ngaphandle kwe-HPMC encane kuyo yonke incane I-Corner powder, izoncibilika ngokushesha lapho ukuxhumana namanzi. - Abakhiqizi be-powder kanye nabakhiqizi badaka basebenzisa le ndlela. [I-Hydroxypropyl Methylcellulose (HPMC) isetshenziswa njenge-ejenti yokugcina amanzi e-putty pofter. [Zosokhu
4. Ungahlulela kanjani ikhwalithi ye-hydroxypropyllykylm methylcellulose (HPMC) kalula futhi ngokuqondile?
. Kodwa-ke, iningi lemikhiqizo emihle limhlophe.
(2) Ubuchwepheshe: Ubumsulwa be-HPMC ngokuvamile bunama-80 mesh kanye ne-100 mesh, kanti ama-mesh ayi-120 awaphansi. Iningi le-HPMC elikhiqizwa eHebei liyi-80 mesh. Ubuciko obuhle, obukhuluma ngokuvamile, obungcono.
. Lapho kudlula khona ukudluliselwa kokukhanya, okungcono, okubonisa ukuthi kunezihlakala ezingaphansi kuyo. . Imvume yokuphendula okuqondile ngokuvamile ilungile, futhi lokho kuphendula okuvundlile kubi kakhulu, kepha akusho ukuthi ikhwalithi yokuphendula mpo ingcono kunaleyo yokuphendula okuvundlile, kanye nekhwalithi yomkhiqizo kunqunywa ngezinto eziningi.
(4) Ukudonsela phansi okuthile: Kukhudlwana amandla adonsela phansi athile, okusindayo kube ngcono. Ukucaciswa kukhulu, ngokuvamile ngoba okuqukethwe kweHydroxypropyl Group kuyo kuphezulu, futhi okuqukethwe kweHydroxypropyl Group kuphezulu, ukugcinwa kwamanzi kungcono.
I-5. Ithini inani le-hydroxypropyll methylcellulose (HPMC) ku-putty powder?
Inani le-HPMC elisetshenziswe ezinhlelweni ezingokoqobo liyahlukahluka ngokuya ngendawo yesimo sezulu, izinga lokushisa, ikhwalithi yendawo ye-ash calcium, ifomula ye-putty powder kanye "nekhwalithi edingwa amakhasimende". Ngokuvamile, phakathi kuka-4 kg no-5 kg. Isibonelo: Iningi le-putty powder eBeijing lingu-5 kg; Iningi le-putty powder eGuizhou lingu-5 kg ehlobo kanye ne-4,5 kg ebusika; Inani le-Putty eYunnan lincane, ngokuvamile ama-3 kg kuya ku-4 kg, njll.
6. Yini i-viscosity efanele ye-hydroxypropyllyllose methylcellulose (HPMC)?
I-PuTTY SUCK imvamisa i-yuan eyi-100,000, futhi izidingo zodaka ziphezulu, kanti ezingama-150,000 yuan ziyadingeka ukuze zisetshenziswe kalula. Ngaphezu kwalokho, umsebenzi obaluleke kakhulu we-HPMC ukugcinwa kwamanzi, kulandelwa ukuqina. Ku-putty powder, inqobo nje uma ukugcinwa kwamanzi kuhle futhi i-viscosity iphansi (70,000-80,000), kungenzeka futhi. Vele, ukukhuphuka okuphezulu, kungcono ukugcinwa kwamanzi okuhlobene. Lapho i-viscoty idlula i-100,000, i-viscosity izothinta ukugcinwa kwamanzi. Akusekho.
7. Yiziphi izinkomba eziphambili zobuchwepheshe ze-hydroxypropyllyllose methylcellulose (HPMC)?
Okuqukethwe kwe-Hydroxypropyl kanye ne-viscosity, iningi labasebenzisi likhathazekile ngalezi zinkomba ezimbili. Labo abanokuqukethwe okuphezulu kwe-hydroxypropyl ngokuvamile banokugcinwa okungcono kwamanzi. Lowo onokuqonda okuphezulu unokugcinwa kwamanzi okungcono, ngokulinganayo (hhayi ngokuphelele), futhi lowo onamandla aphezulu asetshenziswa kangcono ngodaka kasimende.
8. Yiziphi izinto eziphambili ezingavuthiwe ze-hydroxypropyllyllose methylcellulose (HPMC)?
Izinto zokusetshenziswa eziphambili ze-hydroxypropylllyrlose (HPMC): I-methyl chloride, i-methyl chloride, i-propylene oxide, nezinye izinto eziluhlaza, i-acid soda, i-acid, i-acid, i-acip.
9. Uyini umsebenzi oyinhloko wokusetshenziswa kwe-HPMC ku-Putty Powder, futhi kwenzeka ngamakhemikhali?
Ku-putty powder, i-HPMC idlala izindima ezintathu zokuqina, ukugcinwa kwamanzi nokwakha. Ukuqina Ukugcinwa kwamanzi: yenza i-putty powder eyomile kancane, futhi isize i-ash calcium ukuze usabele ngaphansi kwesenzo samanzi. Ukwakhiwa: I-Cellulose inomphumela wokuthambisa, okungenza i-Putty Powder ibe nokwakhiwa okuhle. I-HPMC ayihlanganyeli kunoma yikuphi ukusabela kwamakhemikhali, kepha idlala indima ebalulekile. Ukungeza amanzi ku-putty powder bese ukuwabeka odongeni ukusabela kwamakhemikhali, ngoba kwakhiwa izinto ezintsha. Uma ususa i-putty powder odongeni odongeni olusuka odongeni, ugaye lube yimpuphu, futhi uyisebenzise futhi, ngeke isebenze ngoba yenziwe izinto ezintsha (calcium carbonate). ) Futhi. Izici eziphambili ze-Ash Calcium Powder yilezi: Ingxube ye-CA (OH) 2, I-CAO nenani elincane le-CACO3, i-CAO + H2O = CA (OH) 2 + CO2 = CALCIum Kusemanzini nasemoyeni ngaphansi kwesenzo se-CO2, kukhiqizwa i-calcium calbonate kuphela, lapho i-HPMC igcina kuphela amanzi, isiza ukusabela okungcono kwe-ASH Calcium, futhi ayihlanganyeli kunoma yikuphi ukusabela.
10. I-HPMC iyi-ether engeyona eye-cellulose, ngakho-ke yini okungeyona eye-ionic?
Ngokwemigomo ka-Lamben, okungewona ama-ion yizinto ezingasho lutho emanzini. I-Ionization isho inqubo lapho i-electrolyte ihlukaniswe khona ngama-ion ashadiwe angahamba ngokukhululeka kwi-solvent ethile (njengamanzi, utshwala). Isibonelo, i-sodium chloride (i-NACL), usawoti esiwudlayo nsuku zonke, anciphise emanzini kanye nama-ionizes ukukhiqiza ngokukhululekile ama-sodium ion (NA +) akhokhiswa kahle nama-chloride ions (cl) akhokhiswa kabi. Lokho kusho ukuthi, lapho i-HPMC ibekwa emanzini, ngeke ihlukanise ama-ions amakhokho, kepha ikhona ngesimo sama-molecule.
11. Yini okushisa kwe-gel ye-hydroxypropylllylylylyll methylcellulose ahlobene nalo?
Izinga lokushisa le-gel le-HPMC lihlobene nokuqukethwe kwalo methoxy, okuqukethwe kwe-methoxy 」, okuphezulu kwe-gel lokushisa ↑.
12. Ngabe kukhona ubudlelwano phakathi kwethonsi le-putty powder ne-hpmc?
Ukulahleka kwempuphu ye-putty powder kuhlobene kakhulu nekhwalithi ye-Ash calcium, futhi kuncane ongakwenza nge-HPMC. Okuqukethwe okuphansi kwe-calcium ye-grey calcium kanye nesilinganiso esingafanele se-CAO ne-CA (oh) 2 in grey calcium izodala ukulahleka kwempuphu. Uma kunokuthile ongenziwa nge-HPMC, khona-ke i-HPMC inokugcinwa kwamanzi okumpofu, kuzodala nokulahleka kwempuphu. Ngenxa yezizathu ezithile, sicela ubheke umbuzo 9.
13. Uyini umehluko phakathi kohlobo olusheshayo lwamanzi nohlobo olushisayo lwe-hydroxypropylllykyllose kwinqubo yokukhiqiza?
Uhlobo lwamanzi olubandayo olusheshayo lwe-HPMC luphathwa yi-glyxical, futhi luhlakazeka ngokushesha emanzini abandayo, kepha alinciphise ngempela. Kuncibilika kuphela lapho i-viscosity inyuka. Izinhlobo ezishisayo zeMelt aziphathwa yi-glyxal. Uma inani le-Gyoxal likhulu, ukuhanjiswa kuzoshesha, kepha ukubonwa kuzokhuphuka kancane, futhi uma inani lincane, okuphambene nalo kuzoba iqiniso.
14. Yini iphunga le-hydroxypropyllllyllose (HPMC)?
I-HPMC ekhiqizwa yi-solvent indlela isebenzisa i-toluene ne-isopropanol njenge-solvents. Uma ukugeza kungakuhle kakhulu, kuzoba nephunga elisalelayo.
15. Ungayikhetha Kanjani i-hydroxypropproserm elifanele (HPMC) ngezinhloso ezihlukile?
Ukusetshenziswa kwe-Putty Powder: Izidingo ziphansi, i-viscosity ingu-100,000, kwanele, into ebalulekile ukugcina amanzi kahle. Ukusetshenziswa kodaka: izidingo eziphakeme, i-viscosity ephezulu, i-150,000 ingcono. Ukusetshenziswa kwe-glue: Imikhiqizo esheshayo enokubonakala okuphezulu iyadingeka.
16. Iyini i-alias ye-hydroxypropyllyll methylcellulose?
I-Hydroxypropyl Methyl Cellulose, isiNgisi: I-Hydroxypropylm Methyl Cellulose Isifinyezo: I-HPMC noma i-MHPC ALIAS: IHypromellose; Cellulose hydroxypropyll methyl ether; I-Hypromellose, i-cellulose, 2-hydroxypropylmethyl cellulose ether. I-cellulose hydroxypropyll methyl etrolose.
17. Ukusetshenziswa kwe-HPMC ku-Putty Powder, yisiphi isizathu sama-bubble ku-putty powder?
Ku-putty powder, i-HPMC idlala izindima ezintathu zokuqina, ukugcinwa kwamanzi nokwakha. Ungazibandakanyi kunoma yikuphi ukusabela. Izizathu zama-bubble: 1. Faka amanzi amaningi. 2
18. Yini ifomula ye-putty powder yezindonga ezingaphakathi nangaphandle?
I-Inner Wall Putty Powder: I-Hard calcium 800kg, i-Ash calcium 150kg (isitashi, inhlabathi eluhlaza okotshani, i-pengrun, i-citric acid, i-polyric acid, njll.
Udonga lwangaphandle oludongeni lwe-Puntty
19. Uyini umehluko phakathi kwe-HPMC ne-MC?
I-MC yi-methyl cellulose, eyenziwe nge-cellulose ether ngokuphatha ukotini ocwengekile nge-alkali, usebenzisa i-methane chloride njenge-ejenti yokusheshisa, futhi uchungechunge lokuphendula. Ngokuvamile, izinga lokufaka esikhundleni ngu-1.6 ~ 2.0, kanye ne-solubility futhi kwehlukile ngama-degree ahlukene wokufaka esikhundleni. Ingeye-ether engeyona eye-moulsose.
. Ngokuvamile, uma inani lokungeza likhulu, ubuciko buncane, futhi i-viscoty inkulu, inani lokugcina lamanzi liphezulu. Phakathi kwazo, inani lesengezo linomthelela omkhulu kunabo bonke emazingeni okugcinwa kwamanzi, futhi izinga lokubonana alifani ngqo nezinga lamazinga okugcina amanzi. Izinga lokuchithwa ikakhulukazi lincike ezingeni lokuguqulwa komhlaba kwezinhlayiya ze-celluLose kanye nezinhlayiyane izinhlayiyana. Phakathi kwalezi zithambekela ezingenhla kwe-cellulose, i-methyl cellulose ne-hydroxyprosell methyl cellulose zinamazinga aphezulu okugcina amanzi.
(2) I-methylcellulose incanela emanzini abandayo, futhi kuzoba nzima ukuncibilika emanzini ashisayo. Isixazululo sayo esinamanzi sizinzile kakhulu ebangeni le-PH = 3 ~ 12. Inokuhambisana okuhle nesitashi, isiGungu seGum, njll. Futhi ama-surfactants amaningi. Lapho izinga lokushisa lifinyelela izinga lokushisa le-gelation, kwenzeka.
(3) Izinguquko zokushisa zizothinta kakhulu isilinganiso sokugcinwa kwamanzi se-methyl cellulose. Ngokuvamile, izinga lokushisa eliphakeme, elibi kakhulu nokugcinwa kwamanzi. Uma izinga lokushisa lodaka lidlula ama-40 ° C, ukugcinwa kwamanzi kwe-methyl cellulose kuzoncishiswa kakhulu, kuthinte kabi ukwakhiwa kodaka.
(4) I-methyl cellulose inomthelela omkhulu ekwakhiweni nasekunamathiselwe kodaka. I- "Adhesion" Lapha lapha ibhekisela kumandla anamathele azwakala phakathi kwethuluzi lomfakisicelo wesisebenzi kanye nodonga substrate, okungukuthi, ukumelana nokuncipha kodaka kodaka. Ukunamathelayo kuphakeme, ukumelana nokukhula kodaka kukhulu, futhi amandla afunwa yizisebenzi ezisezinhlelweni zokusebenzisa nawo akhulu, futhi ukusebenza kodaka kumpofu. I-Methyl celtulese anhesion isezingeni eliphakathi ku-Cellulose Ether Products.
I-HPMC yi-hydroxypropyllylylyly, okuyi-ether exubile exubile eyenziwe kusuka kukotini ecwengekile ngemuva kokusebenza kwe-alkaliwe, usebenzisa i-propelene oxide kanye ne-methyl chloride njenge-etherization agents, nangochungechunge lokuphendula. Izinga lokufakwa esikhundleni ngokuvamile i-1.2 ~ 2.0. Izakhiwo zalo zihlukile ngenxa yezilinganiso ezihlukile zokuqukethwe kwe-methoxyl nokuqukethwe kwe-hydroxypropyl.
. Kepha izinga lokushisa layo le-gelation emanzini ashisayo liphakeme kakhulu kunalelo ye-methyl cellulose. I-solubity emanzini abandayo nayo yathuthukiswa kakhulu uma iqhathaniswa ne-methyl cellulose.
. Ukushisa futhi kuthinta ukubonakala kwayo, njengoba izinga lokushisa liyanda, ukuhlakanipha kuyancipha. Kodwa-ke, i-viscosity yayo ephezulu inomphumela ophansi wokushisa kune-methyl cellulose. Isixazululo saso sizinzile lapho zigcinwa emazingeni okushisa asekamelweni.
. Amanzi e-caustic kanye nama-lime anomthelela omncane ekusebenzeni kwawo, kepha u-Alkali angasheshisa ukuchitheka kwawo futhi akhuphule ukubonakala kwawo. Hydroxypropyl methylcellulose is stable to common salts, but when the concentration of salt solution is high, the viscosity of hydroxypropyl methylcellulose solution tends to increase.
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. Njengotshwala be-polyvinyl, isitashi ether, gum yemifino, njll.
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20. Yini okufanele inakeke ekusetshenzisweni kwangempela kobudlelwano phakathi kokubonakala nokushisa kwe-HPMC?
I-viscosity ye-HPMC ilingana kakhulu namazinga okushisa, okungukuthi, i-viscosity inyuka njengoba izinga lokushisa lincipha. I-viscosity yomkhiqizo esivame ukubhekisa kuye ukuthi kubhekiswa kumphumela wokuhlolwa kwesisombululo sayo esingamanzi esingu-2% ekushiseni kwama-degree angama-20.
Kuzinhlelo zokusebenza ezisebenzayo, kufanele kuqashelwe ukuthi ezindaweni ezinemibono emikhulu yokushisa phakathi kwehlobo nobusika, kunconywa ukusebenzisa i-viscotive ephansi ebusika, evumelana kakhulu nokwakha. Ngaphandle kwalokho, lapho izinga lokushisa liphansi, ukubonakala kwe-cellulose kuzokwanda, futhi isandla sizizwa siba nzima lapho sikhahlela.
I-Viscosity Ephakathi: 75000-100000 ikakhulukazi isetshenziselwa ukubeka ama-putty
Isizathu: Ukugcinwa kwamanzi okuhle
I-Viscosity ephezulu: 150000-200000 ikakhulukazi esetshenziselwa i-polystyrene izinhlayiya zokufakwa kwezinhlayiya zokufakelwa kwerabha enjoloba kanye ne-vitrified microbead inhlabathi yokufakelwa okushisayo okushisayo.
Isizathu: Ukubonakala kuphakeme, udaka akulula ukuwa, sag, futhi kwathuthukiswa ukwakhiwa.
Kepha ngokuvamile ekhuluma, ukukhuphuka okuphezulu, kungcono ukugcinwa kwamanzi. Ngakho-ke, ukucubungula izindleko, amafektri amaningi owomile we-powde pottar abeka ama-cellulose aphakathi nendawo aphansi (20000-40000) ane-cellulose ephakathi nendawo (20000-40000) ukunciphisa inani lokungezwa. .
Isikhathi sePosi: Nov-18-2022