Izinyathelo zokukhiqiza kanye nezinkambu zokusetshenziswa kwe-HPMC

1. Isingeniso ku-Hydroxypropyl Methylcellulose (HPMC)

I-Hydroxypropyl Methylcellulose (HPMC)iyi-ether ye-cellulose engeyona i-ionic eyenziwe nge-fiber yekotini yemvelo noma i-pulp yokhuni ngokuguqulwa kwamakhemikhali. I-HPMC inamandla okuncibilika kwamanzi, ukuqina, ukuzinza, izakhiwo zokwakha ifilimu kanye nokuhambisana kwezinto eziphilayo, ngakho-ke isetshenziswa kabanzi ekwakheni, kwezokwelapha, ekudleni, kumakhemikhali ansuku zonke nakweminye imikhakha.

2. Izinyathelo zokukhiqiza ze-HPMC

Ukukhiqizwa kwe-HPMC kuhlanganisa kakhulu izinyathelo ezilandelayo ezibalulekile:

Ukulungiswa kwezinto ezingavuthiwe

Izinto ezisetshenziswa kakhulu ze-HPMC yi-cellulose yemvelo emsulwa kakhulu (ngokuvamile eyenziwe ngokotini noma ngokhuni), edinga ukwelashwa kwangaphambi kwesikhathi ukuze kususwe ukungcola futhi kuqinisekiswe ubumsulwa kanye nokufana kwe-cellulose.

Ukwelashwa kwe-Alkalinization

Faka i-cellulose ku-reactor bese ufaka inani elifanele lesisombululo se-sodium hydroxide (NaOH) ukuze uvuvuzele i-cellulose endaweni ene-alkaline ukuze wakhe i-alkali cellulose. Le nqubo ingandisa umsebenzi we-cellulose futhi ilungiselele ukusabela okulandelayo kwe-etherification.

Ukusabela kwe-Etherification

Ngokusekelwe ku-alkali cellulose, ama-methylating agents (njenge-methyl chloride) kanye nama-hydroxypropylating agents (njenge-propylene oxide) afakwa ukuze enze ukusabela kwe-etherification. Ukusabela kuvame ukwenziwa ku-reactor evaliwe enomfutho ophezulu. Ezingeni lokushisa elithile kanye nokucindezela, amaqembu e-hydroxyl ku-cellulose athathelwa indawo amaqembu e-methyl kanye ne-hydroxypropyl ukuze akhe i-hydroxypropyl methylcellulose.

Ukugeza okungathathi hlangothi

Ngemva kokusabela, umkhiqizo ungase uqukathe ama-reagent amakhemikhali angaphenduliwe kanye nemikhiqizo elandelanayo, ngakho-ke kuyadingeka ukwengeza isisombululo se-asidi sokwelashwa kokungaguquguquki, bese ugeza ngamanzi amaningi noma nge-organic solvent ukuze ususe izinto ezisele ze-alkaline kanye nokungcola.

Ukuphelelwa amanzi emzimbeni kanye nokomisa

Isixazululo se-HPMC esihlanziwe sihlungwa nge-centrifuge noma sihlungwe ukuze kususwe amanzi angaphezulu, bese kusetshenziswa ubuchwepheshe bokomisa obusezingeni eliphansi ukwakha impuphu eyomile noma ama-flakes ukuze kugcinwe izakhiwo zomzimba nezamakhemikhali ze-HPMC.

Ukugaya nokuhlola

I-HPMC eyomisiwe ithunyelwa emishinini yokugaya ukuze ichotshozwe ukuze kutholakale impuphu ye-HPMC yobukhulu obuhlukene bezinhlayiya. Ngemva kwalokho, ukuhlolwa nokuhlukaniswa kwenziwa ukuqinisekisa ukufana komkhiqizo ukuze kuhlangatshezwane nezidingo ezahlukene zokusetshenziswa.

Ukupakishwa nokugcinwa

Ngemva kokuhlolwa kwekhwalithi, umkhiqizo wokugcina upakishwa ngokwezindlela ezahlukene zokusetshenziswa (njenge-25kg/isikhwama) bese ugcinwa endaweni eyomile nengena umoya ukuze kuvinjelwe umswakama noma ukungcola.

3. Izindawo eziyinhloko zokusetshenziswa kwe-HPMC

Ngenxa yezakhiwo zayo ezinhle zokujiya, ukwakha ifilimu, ukugcina amanzi, ukuhlanganisa kanye nokuhambisana kwezinto eziphilayo, i-HPMC isetshenziswe kabanzi ezimbonini eziningi:

Imboni yokwakha

I-HPMC iyisengezo esibalulekile sezinto zokwakha, esisetshenziswa kakhulu ku:

Udaka lukasimende: luthuthukisa ukugeleza kokwakhiwa, luthuthukise ukunamathela, futhi luvimbele ukulahleka kwamanzi ngokweqile.

I-adhesive yethayela: kwandisa ukugcinwa kwamanzi kwe-adhesive yethayela futhi kuthuthukise ukusebenza kokwakhiwa.

Imikhiqizo ye-Gypsum: ithuthukisa ukumelana nokuqhekeka kanye nokusebenza kahle kokwakhiwa.

Impuphu ye-putty: ithuthukisa ukunamathela, ukumelana nokuqhekeka kanye nekhono lokulwa nokugoba.

Isitezi esizilinganisayo: sithuthukisa ukugeleza kwamanzi, ukumelana nokuguguleka kanye nokuqina.

Imboni yezemithi

I-HPMC isetshenziswa kabanzi emkhakheni wezokwelapha njenge:

I-ejenti yokumboza kanye nokwakha ifilimu yamaphilisi emithi: ithuthukisa ukuzinza kwemithi kanye nezinga lokulawula ukukhishwa kwemithi.

Amalungiselelo okukhululwa okuqhubekayo kanye nokukhululwa okulawulwayo: asetshenziswa kumaphilisi okukhululwa okuqhubekayo kanye namagobolondo e-capsule okukhululwa okulawulwayo ukulawula ukukhululwa kwemithi.

Izinto ezithatha indawo yama-capsule: ezisetshenziswa ekwenziweni kwama-capsule emifino (ama-capsule emifino).

4. Imboni yokudla

I-HPMC isetshenziswa njengesithako sokudla ikakhulukazi:

Isiqinisi kanye ne-emulsifier: isetshenziswa ezitsheni ezibhakiwe, amajeli, amasoso, njll. ukuthuthukisa ukunambitheka kokudla.

Isiqinisi: sisetshenziswa ku-ayisikhilimu nasemikhiqizweni yobisi ukuvimbela ukuna kwamaprotheni.

Ukudla kwemifino: kusetshenziswa njengesithako sokudla okusekelwe ezitshalweni ukuze kuthathelwe indawo izinto eziqinisayo ezitholakala ezilwaneni njenge-gelatin.

Imboni yamakhemikhali yansuku zonke

I-HPMC iyisithako esibalulekile ezimonyweni nasezintweni zokunakekelwa komuntu siqu:

Imikhiqizo yokunakekela isikhumba: esetshenziswa kuma-lotion, kuma-face mask, njll. ukuze kuhlinzekwe ngomswakama kanye nokuzinza.

I-shampoo kanye nejeli yokugeza: kwandisa ukuqina kwe-foam futhi kuthuthukise ukujiya.

I-Toothpaste: isetshenziswa njengesithambisi-zinyo kanye nesithambisa ukuze kuthuthukiswe ukunambitheka.

Upende noyinki

I-HPMC inezakhiwo ezinhle zokwakha ifilimu kanye nokuqina kokumiswa futhi ingasetshenziswa ku:

Upende we-latex: kuthuthukisa ukuxubha kanye nokwakheka kwe-rheology yopende futhi kuvimbele imvula.

Uyinki: Thuthukisa i-rheology futhi uthuthukise ikhwalithi yokunyathelisa.

Ezinye izinhlelo zokusebenza

I-HPMC ingasetshenziswa futhi ku:

Imboni ye-Ceramic: Njenge-binder, thuthukisa amandla ezikhala ze-ceramic.

Ezolimo: Kusetshenziswa ekumisweni kwezibulala-zinambuzane kanye nokwembozwa kwembewu ukuthuthukisa ukuzinza kwe-ejenti.

Imboni yokwenza amaphepha: Njenge-ejenti yokulinganisa, thuthukisa ukumelana namanzi kanye nokunyatheliswa kwephepha.

I-HPMCiyinto esetshenziswa kabanzi ye-polymer esebenzayo, esetshenziswa kabanzi ekwakheni, kwezokwelapha, ekudleni, kumakhemikhali ansuku zonke, ekumbozeni nakwezinye izimboni. Inqubo yayo yokukhiqiza ifaka phakathi ukwelashwa kwezinto zokusetshenziswa kwangaphambili, ukwenziwa kwe-alkali, ukufakelwa kwe-ether, ukuwasha, ukomisa, ukugaya nezinye izinyathelo, isixhumanisi ngasinye sithinta ikhwalithi yomkhiqizo wokugcina. Ngokuthuthuka kwezidingo zokuvikela imvelo kanye nokukhula kwesidingo semakethe, ubuchwepheshe bokukhiqiza be-HPMC buyathuthukiswa ukuze kuhlangatshezwane nezidingo zezimboni eziningi.