IHydroxypropyl methyl cellulose Umkhiqizi wefekthri womkhiqizi we-HPMC waseChina

I-Tiantai Cellulose Co.,Ltd ingumkhiqizi wefekthri ekhiqiza i-Hydroxypropyl methyl cellulose HPMC engumkhiqizi wefekthri yaseChina, enegama layo lekhwalithi ephezulu elithi QualiCell® Cellulose ethers.

Ukubheka ngokushesha i-hydroxypropyl methylcellulose HPMC

Okokuqala, ikuphi ukusetshenziswa okuyinhloko kwe-hydroxypropyl methyl cellulose?

I-HPMC ISETSHENZISWA KAKHULU EZINTO ZOKWAKHA, okokuhlanganisa, ama-synthetic resin, izitsha zobumba, imithi, ukudla, izindwangu, ezolimo, izimonyo, ugwayi nezinye izimboni. I-HPMC ingahlukaniswa ngebanga lezimboni, ibanga lokudla kanye nebanga lezemithi ngokuya ngokusetshenziswa kwayo.

Okwesibili, i-hydroxypropyl methyl cellulose ihlukaniswe yaba izinhlobo ezimbalwa, phakathi kwazo uyini umehluko?

I-HPMC ingahlukaniswa ibe uhlobo olusheshayo (isijobelelo sebanga "S") kanye nohlobo olushisayo oluncibilikayo, imikhiqizo esheshayo, emanzini abandayo ahlakazeka ngokushesha, anyamalale emanzini, ngalesi sikhathi uketshezi alunayo i-viscosity, ngoba i-HPMC isanda kuhlakazeka emanzini, akukho ukuchithwa kwangempela. Cishe (goqa) imizuzu emi-2, i-viscosity ye-liquid iyanda kancane, yenza i-viscous colloid ecacile. Imikhiqizo encibilikayo eshisayo, emanzini abandayo, ingahlakazwa ngokushesha emanzini ashisayo, inyamalale emanzini ashisayo, njengokushisa kuze kufike ekushiseni okuthile (ngokuhambisana nokushisa kwejeli komkhiqizo), i-viscosity ibonakala kancane, kuze kube yilapho ukwakheka kwe-colloid esobala ebonakalayo.

Okwesithathu, indlela yesisombululo se-hydroxypropyl methyl cellulose inani?

1. Wonke amamodeli angangezwa kundaba ngendlela yokuxuba okomile;

I-2, idinga ukungezwa ngokuqondile kwisisombululo samanzi okushisa okujwayelekile, kungcono ukusebenzisa uhlobo lokuhlakaza amanzi abandayo, emva kokungeza ngokuvamile ngemizuzu engu-10-90 ukuze ujike (ukugqugquzela, ukugqugquzela, ukugqugquzela)

3. Imodeli evamile iqala ukuhlakazwa ngokuxubha ngamanzi ashisayo, bese ichitheka ngokungeza amanzi abandayo ngemva kokugubha nokupholisa.

4. Uma i-caking and wrapping phenomenon kwenzeka lapho kuqedwa, kungenxa yokuthi ukuxuba akwanele noma imodeli evamile yengezwe ngokuqondile emanzini abandayo. Ngalesi sikhathi, kufanele ixutshwe ngokushesha.

5. Uma ama-bubbles akhiqizwa lapho encibilika, angashiywa amahora angu-2-12 (isikhathi esithile sinqunywa ukuvumelana kwesixazululo) noma asuswe nge-vacuum-extraction, i-pressurization nezinye izindlela, kanye nenani elifanele le-agent ye-antifoaming nayo ingangezwa.

Okwesine, kulula kangakanani futhi kulula kangakanani ukunquma ukuma noma ukuwa kwe-hydroxypropyl methyl cellulose?

I-1, ubumhlophe, ubumhlophe nakuba ingakwazi ukunquma ukuthi i-HPMC yinhle yini, futhi uma yengezwa ku-whitener yenqubo yokukhiqiza, izothinta ikhwalithi yayo, kodwa, imikhiqizo emihle ikakhulukazi ubumhlophe buhle.

2, ubucwebe: Ubucwebe be-HPMC ngokuvamile bungu-80 mesh kanye ne-100 mesh, 120 ngaphansi, okucolekile kuba ngcono kakhulu.

I-3, ukudlulisa ukukhanya: I-HPMC emanzini, yakha i-colloid esobala, bheka ukukhanya kwayo, ukungena okukhudlwana kokuhle, chaza i-insolubles encane ngaphakathi, igedlela lokusabela eliqondile ngamadigri ngokuvamile lihle, izothumela igedlela elivundlile lokusabela, kodwa ayikwazi ukuchaza ukuthi ikhwalithi yokukhiqiza igedlela eqondile ingcono kunezici eziningi zokukhiqiza ezinquma ukuthi umkhiqizo ungcono kunezici eziningi ze-kettle.

I-4, isilinganiso: i-proportion enkulu, isisindo esingcono kakhulu, kunesikhulu, ngokuvamile ngenxa yokuthi okuqukethwe kwe-hydroxypropyl kuphezulu, okuqukethwe kwe-hydroxypropyl kuphezulu, khona-ke ukugcinwa kwamanzi kungcono.

Ezinhlanu, i-hydroxypropyl methyl cellulose ngenani le-putty powder?

I-HPMC ekusetshenzisweni kwangempela komthamo, ngesimo sezulu, izinga lokushisa, izinga lomlotha we-calcium wendawo, i-putty powder formula kanye nezidingo zamakhasimende zekhwalithi ehlukene, futhi kunomehluko ozungezile, ngokuvamile, phakathi kuka-4-5 kg.

Isithupha, i-hydroxypropyl methyl cellulose viscosity ingcono kakhulu?

Yiba nesithukuthezi NGEMPUVA YENGANE IJWAYELEKILE IZINKULUNGWANE EZIYI-100 KULUNGILE, ISIDINGO EMORTAR SIDE KANYE, UFUNA IZINKULUNGWANE EZIYI-150 UKUZE KUHLE UKUZISEBENZISA, futhi, indima ebaluleke kakhulu ye-HPMC ukugcina amanzi, okulandelayo ukujiya. Ku-putty powder, inqobo nje uma ukugcinwa kwamanzi kuhle, i-viscosity iphansi (7-8), kungenzeka futhi, yebo, i-viscosity inkulu, ukugcinwa kwamanzi okuhlobene kungcono, lapho i-viscosity ingaphezu kuka-100,000, i-viscosity inomthelela omncane ekugcinweni kwamanzi.

Okwesikhombisa, yiziphi izinkomba zobuchwepheshe eziyinhloko ze-hydroxypropyl methyl cellulose?

Okuqukethwe kwe-Hydroxypropyl

Okuqukethwe kwe-methyl

i-viscosity

umlotha

Ukuncipha kwesisindo esomile

Isishiyagalombili, yiziphi izinto zokusetshenziswa eziphambili ze-hydroxypropyl methyl cellulose?

Izinto zokusetshenziswa eziyinhloko ze-HPMC: ukotini ocolisisiwe, i-chloromethane, i-propylene oxide, ezinye izinto zokusetshenziswa, amaphilisi e-alkali, i-acid toluene.

Nine, i-hydroxypropyl methyl cellulose ekusetshenzisweni kwe-putty powder, indima eyinhloko, kungakhathaliseki ukuthi amakhemikhali?

Ku-putty powder, idlala izindima ezintathu: ukuqina, ukugcinwa kwamanzi nokwakhiwa. Ukujiya, cellulose kungenziwa uqweqwe ukudlala ukumiswa, ukuze ikhambi ukulondoloza umfaniswano phezulu naphansi indima efanayo, ukugeleza anti ukulengiswa. Ukugcinwa kwamanzi: yenza i-putty powder yome kancane, ukusabela komlotha we-calcium ngaphansi kwesenzo samanzi. Ukwakhiwa: I-Cellulose inomphumela wokugcoba, ingenza i-putty powder ibe nokwakhiwa okuhle. I-HPMC ayibambi iqhaza kunoma yikuphi ukusabela kwamakhemikhali, idlala indima yokusiza kuphela.

IHydroxypropyl methyl cellulose i-non-ionic cellulose ether, khona-ke yini engeyona i-ionic?

Ngokuvamile, izinto ezingenasici azihlanganyeli ekuphenduleni kwamakhemikhali.

I-CMC(carboxymethyl cellulose) ingeye-cationic cellulose, ngakho-ke ukuhlangana ne-calcium empunga kuzoba i-slag ye-bean curd.

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

Izinga lokushisa lejeli le-HPMC lihlobene nokuqukethwe kwayo kwe-methoxy. Ukuncipha kokuqukethwe kwe-methoxy, izinga lokushisa lejeli liphezulu.

Ishumi nambili, i-putty powder powder kanye ne-hydroxypropyl methyl cellulose ayinabo ubuhlobo?

Ibalulekile!! I-HPMC ayigcini kahle amanzi, izodala impushana.

13. Uyini umehluko phakathi kwesisombululo esisheshayo samanzi abandayo nesixazululo esishisayo se-hydroxypropyl methyl cellulose ohlelweni lokukhiqiza?

Uhlobo oluncibilikayo lwe-HPMC lwamanzi abandayo lungemva kokwelashwa kwe-glyoxal ebusweni, emanzini abandayo ahlakazeka ngokushesha, kepha angancibiliki ngempela, i-viscosity up, iyancibilika. Uhlobo oluncibilikayo lokushisa aluzange luphathwe nge-glyoxal. Umthamo we-glyoxal mkhulu, ukuhlakazeka kuyashesha, kodwa i-viscosity ihamba kancane, ivolumu incane, ngokuphambene nalokho.

14, iphunga le-hydroxypropyl methyl cellulose liwukubuyisela kanjani umthwalo wemfanelo?

I-HPMC ekhiqizwa ngendlela yokuncibilikisa yenziwe nge-toluene ne-isopropyl alcohol njenge-solvent. Uma ukugeza kungalungile kakhulu, kuzoba khona ukunambitheka okusele. (Ukubuyiswa kokungathathi hlangothi kuyinqubo eyinhloko yephunga)

15, ukusetshenziswa okuhlukile, indlela yokukhetha i-hydroxypropyl methyl cellulose efanele?

I-Putty powder: izidingo zokugcina amanzi aphezulu, kalula ukwakha (ibanga elinconyiwe: 7010N)

Udaka olusekelwe kusimende olujwayelekile: ukugcinwa kwamanzi aphezulu, ukumelana nokushisa okuphezulu, i-viscosity esheshayo (ibanga elinconyiwe: HPK100M)

Ukusetshenziswa kweglue yokwakha: imikhiqizo esheshayo, i-viscosity ephezulu. (Umkhiqizo onconyiwe: HPK200MS)

I-Gypsum mortar: ukugcinwa kwamanzi aphezulu, i-viscosity ephakathi nendawo, i-viscosity esheshayo (ibanga elinconyiwe: HPK600M)

16, i-hydroxypropyl methyl cellulose siyini isiteketiso?

I-HPMC noma i-MHPC i-alias hydroxypropyl methyl cellulose, i-cellulose hydroxypropyl methyl ether.

Ishumi nesikhombisa, i-hydroxypropyl methyl cellulose ekusetshenzisweni kwe-putty powder, i-putty powder bubble yisiphi isizathu?

I-HPMC ku-putty powder, idlala izindima ezintathu zokujiya, ukugcinwa kwamanzi nokwakha, isizathu sebhamuza:

1. Kwengezwa amanzi amaningi kakhulu.

2. Iphansi alomile, phezulu kolunye ungqimba lokukhuhla, futhi kulula ukubhubhudla.

Ishumi nesishiyagalombili, i-hydroxypropyl methyl cellulose kanye ne-MC uyini umehluko:

I-MC i-methylcellulose, eyenziwe ngokotini ocolisisiwe ngemva kokwelashwa kwe-alkali kanye ne-methane chloride njenge-ejenti ye-etherification ngochungechunge lokusabela ukwenza i-cellulose ether. Ngokuvamile, izinga lokushintsha lingu-1.6-2.0, futhi ukunyibilika kwamazinga ahlukene okushintsha nakho kuhlukile, okungokwe-non-ionic cellulose ether.

(1) Ukugcinwa kwamanzi kwe-methyl cellulose kuncike enanini layo lokungezwa, i-viscosity, ukucoleka kwezinhlayiyana kanye nesivinini sokuhlakazeka. Ngokuvamile, uma inani lokwengeza likhulu, ubuhle buncane futhi i-viscosity inkulu, izinga lokugcinwa kwamanzi liphezulu. Inani lokwengeza linomthelela omkhulu kuzinga lokugcinwa kwamanzi, futhi i-viscosity ayihlobene nezinga lokugcinwa kwamanzi. Isivinini sokuncibilika sincike ikakhulukazi ezingeni lokuguqulwa kwendawo yezinhlayiya ze-cellulose kanye nokucoleka kwezinhlayiyana. Ku-cellulose ether methyl cellulose engenhla kanye ne-hydroxypropyl methyl cellulose izinga lokugcinwa kwamanzi liphezulu.

(2) I-Methyl cellulose ingancibilika emanzini abandayo, ukuchithwa kwamanzi ashisayo kuzobhekana nobunzima, isixazululo saso esimanzi ebangeni le-pH = 3-12 sizinzile kakhulu, nesitashi, nokuhambisana okuningi kwe-surfactant kuhle, lapho izinga lokushisa lifinyelela izinga lokushisa le-gelation, i-gelation phenomenon izokwenzeka.

(3) Ukushintsha kwezinga lokushisa kuzothinta kakhulu izinga lokugcinwa kwamanzi e-methyl cellulose, ngokuvamile lapho izinga lokushisa liphakeme, ukugcinwa kwamanzi kubi kakhulu. Uma izinga lokushisa lodaka lidlula ama-degree angu-40, ukugcinwa kwamanzi kwe-methyl cellulose kuyoba kubi kakhulu, kuthinte kakhulu ukwakhiwa kodaka.

(4) I-Methyl cellulose inethonya elisobala ekwakhiweni nasekunamatheleni kodaka. Lapha, ukunamathela kubhekisela emandleni okunamathela azwakala phakathi kwethuluzi le-daub labasebenzi kanye ne-substrate yodonga, okungukuthi, ukumelana kwe-shear kodaka. Impahla yokunamathisela inkulu, ukumelana kwe-shear kodaka kukhulu, futhi amandla adingwa abasebenzi ngesikhathi sokusebenzisa nawo makhulu, ngakho-ke impahla yokwakha yedaka impofu.