1, yini ukusetshenziswa okuyinhloko kwe-hydroxypropyllylylylylylylylylylyll methyl celtulese (HPMC)?
Impendulo:I-HPMCIsetshenziswa kabanzi ezintweni zokwakha, ukumboza, ama-desin okwenziwa, ama-ceramics, umuthi, ukudla, izindwangu, ezolimo, izimonyo, ugwayi kanye nezinye izimboni. I-HPMC ingahlukaniswa ibe: Ibanga lokwakha, ibanga lokudla kanye nebanga lezokwelapha ngokuya ngokusetshenziswa. Esikhathini esenziwe ekhaya esakhiwe kakhulu ukwakhiwa, ezingeni lokwakha, inani le-putty powder likhulu kakhulu, cishe ama-90% asetshenziselwa ukwenza i-putty powder, okusetshenziselwa ukwenza usimende kanye ne-glue.
2, i-hydroxypropyll methyl cellulose (HPMC) ihlukaniswe ngezinhlobo eziningana, uyini umehluko phakathi kokusetshenziswa kwawo?
Impendulo: I-HPMC ingahlukaniswa in-insociable esheshayo ne-Heat, emanzi abandayo ngokushesha ngokushesha, yanyamalala emanzini, ngoba i-HPMC ivele ihlakazeke emanzini, akukho ukuhlukaniswa kwangempela. Cishe imizuzu emi-2, i-viscosity yoketshezi inyuka kancane kancane, yakha i-colloid esobala ye-volcous. Imikhiqizo yokushisa encibilikayo, kumanzi abandayo amanzi agglomeration, ingaba ngamanzi ashisayo, ahlakazeke ngokushesha, anyamalale emanzini ashisayo, kuze kube yilapho amazinga okushisa ehla emazingeni okushisa athile, kuze kube kancane kancane, kuze kube ukwakheka kwe-colloud esobala. Uhlobo lwe-Heatluble Soluble lungasetshenziswa kuphela ku-putty powder kanye nodaka, ku-glue ketshezi kanye ne-coating, kungabonakala. Imodeli esheshayo ehlakazayo, ubukhulu bohlelo lokusebenza babanzi ababanzi, bakhungatheke nge-powder yengane nodaka, kanye ne-glue key kanye ne-coating, konke kungasetshenziswa, awunakho i-taboo.
3, i-hydroxypropylylylykyl methyl cellulose (HPMPC) izindlela zokuqothula zinazo lezo?
- Impendulo: Indlela eshisayo yokuchithwa kwamanzi
1) Gcwalisa isitsha ngamanzi amaningi ashisayo njengoba udinga futhi uyishise cishe ku-70 ℃. I-Hydroxypropyllylylylylylll inyuke kancane kancane ingezwe ngaphansi kokuvuselelwa kancane, futhi i-HPMC iyantanta ebusweni bamanzi, bese kancane kancane yakha kancane kancane, okupholile ngaphansi kokuvusa.
2) Faka u-1/3 noma 2/3 wenani elidingekayo lamanzi esitsheni bese usishisa ku-70 ℃. Isabalalisa i-HPMC ngokuya ngendlela 1) ukulungiselela ama-slurry amanzi ashisayo; Ngemuva kwalokho engeza amanzi abandayo asele emanzi ashisayo ashisayo bese upholisa ingxube ngemuva kokuvusa.
Indlela yokuxuba ye-powder: i-hpmc powder kanye nenani elikhulu lezithako zezinto eziphithizelayo, ezixutshwe ngokugcwele ne-blender, bese engeza amanzi ukuze uncibilike, hhayi i-agglomerare, ngoba i-HPMC ngayinye, ngoba i-HPMC izoncibilika ngokushesha. - Abakhiqizi be-PuTTY kanye nabakhiqizi be-motara basebenzisa le ndlela. [I-hydroxypropylm methyl celtule
4, kanjani ukunquma ikhwalithi ye-hydroxypropyllylylylylyl methyl cellulose (HPMC) elula futhi enembile?
Impendulo: (1) IMhlophe: Yize ubumsulwa bungakwazi ukuthola ukuthi i-HPMC ilungile, futhi uma ingezwe kwinqubo yokukhiqiza i-whitener, izothinta ikhwalithi yayo. Kodwa-ke, imikhiqizo emihle kakhulu inombala omuhle. . . Ukudluliselwa kwe-vertical reactor ngokuvamile kulungile, futhi lokho kuphendula okuvundlile kubi kakhulu, kepha akusho ukuthi ikhwalithi yokukhiqizwa okuthe mpo ingcono kunaleyo yokuphendula okuvundlile. Kunezici eziningi zokuthola ikhwalithi yomkhiqizo. (4) Ingxenye: Kukhudlwana ingxenye enkulu, okusindayo kube ngcono. Kunokuma okukhulu, ngoba ngaphakathi kwe-hydroxyl proplp izisekelo zesisekelo kuvame kakhulu, okuqukethwe kwe-hydroxyls propys base kuphezulu, ukuvikela amanzi okufuna okungcono.
I-5, i-hydroxypropyll methyl cellulose (HPMPC) i-viscosity ifaneleke kakhudlwana?
- Impendulo: Ukugcotshwa nge-powder yezingane kulungile izinkulungwane eziyikhulu, ezinye zinde kakhulu ngesidingo esikudaka, zifuna amandla ayizinkulungwane eziyi-150. Ngaphezu kwalokho, i-HPMC yindima ebaluleke kakhulu yokugcinwa kwamanzi, elandelwa ukuqina. Ku-putty powder, inqobo nje uma ukugcinwa kwamanzi kulungile, i-viscosity iphansi (ama-7-80,000), kungenzeka futhi, ukuhlakanipha kungcono, lapho i-viscoty ingaphezulu Izinkulungwane eziyikhulu, ukubonwa kokugcinwa kwamanzi akukuningi.
6, Hydroxypropyl Methyl Cellulose (HPMC) Yiziphi izinkomba zobuchwepheshe eziphambili? .
Impendulo: Okuqukethwe kwe-Hydroxypropyl kanye ne-viscosity, iningi labasebenzisi linakekela ngalezi zinkomba ezimbili. Okuqukethwe kwe-Hydroxypropp kuphakeme, ukugcinwa kwamanzi ngokuvamile kungcono. I-Viscosity, ukugcinwa kwamanzi, isihlobo (kodwa hhayi ngokuphelele) kungcono futhi, futhi i-viscosity, nosimende kasimende kungcono ukusebenzisa amanye.
I-7, i-hydroxypropyl methyl cellulose (HPMPC) Yiziphi izinto eziphambili eziluhlaza?
Impendulo: I-Hydroxypropyl methyl cellulose (HPMC) izinto eziphambili ezilukhuni: ukotini ocwengekile, i-chloromethane, i-propelene oxide, ezinye izinto eziluhlaza, i-alkali, i-acid, i-acid, i-acid, i-toluene, i-isopropyl alcohol nokunye.
I-8, HPMC ekusetshenzisweni kwe-putty powder, indima enkulu, kungaba ukwenzeka kwamakhemikhali?
Impendulo: I-HPMC ku-Putty Powder, ukuqina, amanzi nokwakhiwa kwezindima ezintathu. Ukuqina Ukugcinwa kwamanzi: yenza i-putty powder eyomile kancane, i-cilcium enesizayo esenzweni sokuphendula kwamanzi. Ukwakhiwa: I-Cellulose Lubrication, ingenza i-Putty Powder inokwakhiwa okuhle. I-HPMC ayihlanganyeli kunoma yikuphi ukusabela kwamakhemikhali, kepha idlala indima esekelayo kuphela. I-Puterty Powder namanzi, odongeni, ukusabela kwamakhemikhali, ngenxa yesizukulwane sezinto ezintsha, udonga lwe-putty powder phansi kusuka odongeni, bese ulisebenzisa, hhayi into entsha (calcium carbonate). Ukwakheka okuyinhloko kwe-Grey Calcium Powder kuyingxube ye-CA (OH) 2, i-CAO kanye nenani elincane le-CACO3, i-CAO + H2O = CA (OH (OH (OH (OH (OH (OH (OH (OH (OH (OH (OH (oh Amanzi nomoya ngaphansi kwesenzo se-CO2, i-calcium carbonate, kanye ne-hpmc kuphela amanzi, asize ukusabela okungcono kwe-cilcium, okwangempela akuzange kubambe iqhaza kunoma yikuphi ukusabela.
I-9.hpmc non-ionic cellulose ether, ngakho-ke yini okungeyona eye-ionic?
A: Ukukhuluma ngokuvamile, okungewona ama-ion kuyizinto ezingasho lutho emanzini. I-Ionization ukuhlukaniswa kwe-electrolyte kuma-ion athutha ama-free-shushumbisa kwi-solvent ethile, njengamanzi noma utshwala. Isibonelo, usawoti esiwudlayo nsuku zonke - i-sodium chloride (i-NACL) ayinciphise emanzini kanye nama-ionizes ukukhiqiza ama-sodium ions ahamba nge-sodium ions (NA +) enecala elifanele nama-chloride ion (cl) ngecala elingelona iphutha. Okungukuthi, i-HPMC emanzini ayihlukaniswa ngama-ions amakhokho, kepha ikhona njengama-molecule.
10. Yini ehlobene nokushisa kwe-gel ye-hydroxypropylylylylylylylylylylylylylylylyllop methyl cellulose?
- Impendulo: izinga lokushisa le-gelI-HPMCKuhlobene nokuqukethwe kwe-methoxyl, okuqukethwe kwe-methoxyl ↓, okuphezulu kwe-gel lokushisa.
11, Puterty Powder Powder ne-HPMC Abukho ubuhlobo?
Impendulo: I-Putty Powder Drop powder ikakhulukazi futhi ikhwalithi ye-Ash calcium inobudlelwano obukhulu kakhulu, futhi i-HPMC ayinabo ubudlelwano obukhulu kakhulu. Ukuqukethwe okuphansi kwe-calcium ye-grey calcium kanye nengxenye engafanele ye-cao ne-ca (oh) 2 in grey calcium izodala ukulahla i-powder. Uma kunobudlelwano obuncane ne-HPMC, khona-ke ukugcinwa kwamanzi kwe-HPMC kumpofu, kuzokwenza futhi i-powder.
12, Hydroxypropyllypropyl methyl cellulose Amanzi Okubandayo Amanzi Soluble and Hot Soluble Ehlelweni Lokukhiqiza Lwamaphi Umehluko?
- Impendulo: Uhlobo lwe-HPMC olubandayo lwamanzi olusheshayo lungemva kokwelashwa komhlaba okukhona, okufakwa emanzini abandayo ngokushesha kwahlakazeka, kepha kungachithwa ngempela, kususwe phezulu, kuyachithwa. Uhlobo lwe-thermosoluble aluzange luphathwe yi-glyxal. Inani le-Gyoxal likhulu, ukuhlakazeka kuyashesha, kepha i-viscosity iyahamba kancane, inani lincane, kunalokho.
13, i-hydroxypropylylylylylylykl methyl cellulose (HPMPC) iphunga ukuthi linjani?
- Impendulo: I-HPMC ekhiqizwa indlela ye-solvent yenziwe ngoTolune notshwala be-isopropyl. Uma ukugeza kungakuhle kakhulu, kuzoba nokunambitheka okusalayo.
14, ukusetshenziswa okuhlukile, kanjani ukukhetha i-hydroxyproppropylll methyllloselll methyls (HPMC)?
- Impendulo: Yiba nesithukuthezi ngokusetshenziswa kwe-powder yezingane: Isidingo siphansi, i-viscoty eyizinkulungwane eziyi-100, kulungile, kubalulekile ukuvikela amanzi ukuze usondele kuye. Isicelo sikadaka: Izidingo eziphakeme, izidingo eziphezulu zokubonana, izinkulungwane eziyi-150 ukuba ngcono. Isicelo seglue: Isidingo semikhiqizo esheshayo, i-viscosity ephezulu.
15.Yini i-alias ye-hydroxypropylylylylylylylylylylylylylylyll methyl cellulose?
- Impendulo: I-Hydroxypropyl methyl celtule, ifushaniswe njenge-HPMC noma i-MHPC, noma i-hydroxypropylylylyl methyl cellulose; Cellulose hydroxypropyll methyl ether; I-Hypromellose, cellulose, 2-hydroxypropyly methyl celtuleose ether.
16.hpmc ekusetshenzisweni kwe-putty powder, i-putty powder bubble Yisiphi isizathu?
Impendulo: I-HPMC ku-Putty Powder, ukuqina, amanzi nokwakhiwa kwezindima ezintathu. Ukungahlanganyeli kunoma yikuphi ukusabela. Izimbangela zama-bubble: 1, amanzi amaningi kakhulu. 2, ezansi akomile, ngaphezulu kwesendlalelo sokuhlanza, kulula futhi ukuqubuka.
17. Uyini umehluko phakathi kwe-HPMC ne-MC?
- Impendulo: I-MC iyi-mettyl cellulose, eyenziwe nge-cellulose ether ngochungechunge lokuphendula nge-chloride ye-methane njenge-ejenti ethembisayo ngemuva kwe-alkali. Ngokuvamile, izinga lokufakwa esikhundleni ngu-1.6 ~ 2.0, kanye ne-solubality liyahlukahluka ngezinga lokufakwa esikhundleni. Ingeye-ether ye-annonic cellulose.
. Ngokuvamile engeza inani elikhulu, ubuwula obuncane, i-viscosity, izinga lokugcina amanzi liphezulu. Phakathi kwazo, inani lezengezo linethonya elikhulu kunawo wonke ekugcinweni kwamanzi, futhi i-viscosity ayihambelani nokugcinwa kwamanzi. Izinga lokuchithwa ikakhulukazi lincike ezingeni lokuguqulwa komhlaba nobunzima bezinhlayiyana ze-cellulose. Kulezi zithathela ezingenhla ze-celluLose, i-methyl cellulose kanye ne-hydroxypropylylth methyl cellulose amanzi okugcinwa kwamanzi aphezulu.
(2) I-methyl celtulese iyancibilika emanzini abandayo, okunzima ukuncibilikisa emanzini ashisayo. Isixazululo saso esinamanzi sizinzile kakhulu ngaphakathi kwe-PH = 3 ~ 12. Inokuhambisana okuhle nge-starch, gum ye-guanidine kanye nokuguquguquka okuningi. I-Gelation yenzeka lapho izinga lokushisa lifinyelela izinga lokushisa le-gelation.
(3) Ukuguqulwa kwezinga lokushisa kuzothinta kakhulu isilinganiso sokugcinwa kwamanzi se-methyl cellulose. Ngokuvamile, izinga lokushisa eliphakeme, elibi kakhulu nokugcinwa kwamanzi. Uma izinga lokushisa lodaka lidlula ama-40 ℃, ukugcinwa kwamanzi kwe-methyl cellulose kuzoba kubi kakhulu, okuthinta kakhulu ukusungulwa kodaka.
(4) I-methyl cellulose inethonya elisobala ekukhiqizweni nasekunamathisweni kodaka. "Adhesion" lapha kubhekiswa ekuhlolweni okuzwakala yilesi sisebenzi phakathi kwethuluzi nodonga substrate, okungukumelana nokuphikiswa kodaka kodaka. Ukunamathelisa kukhulu, ukumelana kwama-shuar ngodaka kukhulu, amandla afunwa yizisebenzi kwinqubo yokusetshenziswa nawo inkulu, futhi ukwakhiwa kodaka kumpofu. Emikhiqizweni ye-cellulose ether, ukunqwabelanisa kwe-methyl cellulose kusezingeni eliphakathi.
I-HPMC ye-hydroxypropyllylylylylylylylyly, icwengekeke kukotini ngemuva kokwelashwa kwe-alkali, ne-chloromethane njenge-ejenti yokuphambana, ngochungechunge lokuphendula okungelona olungeyena nochungechunge lwe-ether. Izinga lokufakwa esikhundleni ngokuvamile i-1.2 ~ 2.0. Izakhiwo zalo ziyehluka ngengxenye ye-methoxy ne-hydroxypropylyl.
. Kodwa-ke, izinga lokushisa layo le-gelatution emanzini ashisayo ngokusobala liphakeme kunaleso se-methyl cellulose. I-solubility ye-methyl cellulose emanzini abandayo nayo yathuthukiswa kakhulu.
. Izinga lokushisa libuye lithinta ukubonakala. I-Viscosity iyancipha njengoba izinga lokushisa likhuphuka. Kepha i-viscocity yayo imiphumela yokushisa ephezulu iphansi kunaleyo ye-methyl cellulose. Isixazululo sizinzile lapho zigcinwa emazingeni okushisa asekamelweni.
. Amanzi we-caustic kanye nama-lime anomthelela omncane kwizakhiwo zawo, kepha i-alkali ingasheshisa izinga layo lokuchithwa futhi ithuthukise i-viscosity. Hydroxypropyl methyl cellulose is stable to general salts, but when the concentration of salt solution is high, the viscosity of hydroxypropyl methyl cellulose solution tends to increase.
.
. Njengotshwala be-polyvinyl, isitashi ether, glue yemifino nokunye.
.
.
18. Yini okufanele inakeke ekusetshenzisweni okungokoqobo kobudlelwano phakathi kokuvunywa kanye nokushisa kwe-HPMC?
Impendulo: Ukubonakaliswa kweI-HPMCUkulingana okungenakuqhathaniswa kwezinga lokushisa, okusho ukuthi, i-viscosity inyuka ngokuncipha kwezinga lokushisa. Lapho sikhuluma ngokubonakala komkhiqizo, sikhuluma nge-viscosity ka-2% womkhiqizo emanzini kuma-degree angama-20.
Ngohlelo lokusebenza olusebenzayo, ezindaweni ezinemibono emikhulu yokushisa phakathi kwehlobo nobusika, kufanele kuphawulwe ukuthi kunconywa ukusebenzisa i-viscotive ephansi ebusika, okulungele ukwenziwa. Ngaphandle kwalokho, lapho izinga lokushisa liphansi, ukubonakala kwe-cellulose kuzokwanda, futhi lapho kusongelwa, izizwa zizoba nzima.
I-Medium Viscosity: 75000-100000 ikakhulukazi isetshenziselwa ukubeka ama-putty.
Isizathu: Ukugcinwa kwamanzi okuhle.
I-Viscosity ephezulu: 150000-200000 isetshenziselwa ikakhulukazi i-polystyrerere incration incration dusteration duwre rubber powder kanye ne-vitrified ubuhlalu bokufakwa ubuhlalu.
Isizathu: Ukuvuleka okuphezulu, udaka akulula ukwehlisa, ukugeleza okulengayo, ukuthuthukisa ukwakhiwa.
Kepha ngokuvamile ekhuluma, ukukhuphuka okuphezulu, ukugcinwa kwamanzi, ukucubungula amafektri amaningi okomuntu, ucubungula izindleko, sebenzisa izindleko, sebenzisa i-melvosity cellulose (700-40000) ukunciphisa inani eliphakathi nendawo ukwengeza.
Isikhathi sePosi: Apr-26-2024