I-HPMC njenge-ejenti yokugcina amanzi

I-Hydroxypropyl Methylcellulose (HPMC)iyi-non-ionic cellulose ether, okuyi-semi-synthetic polymer compound elungiselelwe uchungechunge lwezimo zamakhemikhali ezifana ne-alkaliization kanye ne-etherification ye-polymer cotton fiber yemvelo. Ngenxa yezakhiwo zayo ezinhle zomzimba nezamakhemikhali, ukuhambisana kwezinto eziphilayo kanye nokuphepha, i-HPMC isetshenziswa kabanzi emikhakheni eminingi efana nezinto zokwakha, imithi, ukudla, amakhemikhali ansuku zonke, izinto zobumba, njll., ikakhulukazi emikhakheni edinga izakhiwo zokugcina amanzi, ikhombisa izinzuzo ezivelele.

1. Izakhiwo eziyisisekelo ze-HPMC

I-HPMC iyimpuphu emhlophe noma engeyona emhlophe enemicu noma e-granular, encibilika kalula emanzini abandayo, kodwa engancibiliki emanzini ashisayo, i-ethanol, i-ether nezinye izinyibilikisi eziphilayo. Isixazululo sayo sinokuqina okuhle, sakha ifilimu, sinamathela futhi sigcina amanzi. Ngaphezu kwalokho, isixazululo se-HPMC sizinzile ebangeni elibanzi le-pH (3~11) futhi sine-gelation yokushisa, okungukuthi, singakha isakhiwo sejeli esiphendukayo ekushiseni okuthile.

2. Indlela yokugcina amanzi

Indlela eyinhloko ye-HPMC njenge-ejenti yokugcina amanzi ibonakala kakhulu ekuqineni kwayo okuphezulu kwe-hygroscopic kanye nekhono lokukhiya amanzi ngemva kokwenza isixazululo esiqinile. Kunenqwaba yamaqembu athanda amanzi (njengeqembu le-hydroxyl ne-ether) esakhiweni sayo sama-molecule, angakha izibopho ze-hydrogen nama-molecule amanzi, ngaleyo ndlela andise kakhulu isikhathi sokugcina umswakama. Lapho i-HPMC incibilika emanzini, ingakha isakhiwo senethiwekhi esinezinhlangothi ezintathu ukuze igoqe amanzi, inciphise ukulahleka nokuhwamuka kwamanzi ohlelweni. Ngesikhathi esifanayo, impahla yayo yejeli yokushisa iyenza ikwazi ukwakha ijeli lapho ishiswa, ivimbele ukufuduka kwamanzi futhi ithuthukise ukuzinza kohlelo.

3. Ukusetshenziswa kokugcinwa kwamanzi kwe-HPMC emikhakheni ehlukene

3.1. Insimu yezinto zokwakha

Embonini yokwakha, i-HPMC ivame ukungezwa ku-mortar, i-gypsum, izinamathiseli zamathayela, phansi ezizilinganisayo kanye neminye imikhiqizo njengesibambi samanzi kanye nesiqinisi. Ngemva kokufaka i-HPMC ku-mortar yesimende, izinga layo lokugcina amanzi lingathuthukiswa kakhulu, kuvinjelwe ukuthi usimende ungaqhekeki ngenxa yokulahlekelwa amanzi ngokweqile, okusiza usimende ukuthi umanzise ngokugcwele futhi uthuthukise amandla okubopha kanye nokusebenza kokwakha. Ngesikhathi esifanayo, ngaphansi kokwakhiwa kwesimo sezulu esishisayo noma izimo ze-substrate ezimunca amanzi kakhulu, i-HPMC ingavimbela ngempumelelo ukuhwamuka okusheshayo kwamanzi e-mortar futhi iqinisekise ikhwalithi yokwakha.

3.2. Insimu yezokwelapha

Embonini yezemithi, i-HPMC isetshenziswa kabanzi ekumbozweni kwamaphilisi, ezintweni zokwakha amathambo, ezintweni zokukhulula ezilawulwayo, njll. Ukusebenza kwayo okuhle kokugcina amanzi kungakha isithiyo se-colloidal emzimbeni, kulawule izinga lokukhishwa kwemithi, futhi kuthuthukise ukutholakala kwayo. Emalungiselelweni amehlo kanye nokudabuka kokwenziwa, i-HPMC isetshenziswa njengesithambisi kanye nesithambisi sokunciphisa izimpawu zamehlo omile.

3.3. Imboni yokudla

I-HPMC ivame ukusetshenziswa njenge-emulsifier, i-water retainer kanye ne-stabilizer ekucubungulweni kokudla. Ikakhulukazi ngemva kokuyifaka ezinkwa ezibhakiwe, ingabambezela ngempumelelo ukuhwamuka kwamanzi enhlama futhi ithuthukise ukunambitheka kanye nokuphila kweshelufu komkhiqizo oqediwe. Isibonelo, esinkweni esingenayo i-gluten, i-HPMC ingathatha indawo yesakhiwo se-gluten, yakhe inethiwekhi ye-colloidal, igcine umswakama futhi ithuthukise ukusebenza kahle kwenhlama.

3.4. Izimonyo kanye nemikhiqizo yamakhemikhali yansuku zonke

Emikhiqizweni yamakhemikhali yansuku zonke njenge-shampoo, i-lotion, kanye nokhilimu, i-HPMC, njengesithambisi-manzi kanye nesiqinisi, ingamunca umswakama endaweni ezungezile futhi inciphise ukuguquguquka komswakama, ithuthukise ukuthungwa kanye nomphumela wokuthambisa womkhiqizo. Ngaphezu kwalokho, i-HPMC ingathuthukisa futhi ukuhambisana nokunamathela komkhiqizo futhi ithuthukise ukuzwela kwesikhumba.

4. Izici ezithinta ukusebenza kokugcinwa kwamanzi

Ukusebenza kokugcinwa kwamanzi kwe-HPMC kuthinteka yizici eziningi:

Izinga lokushintsha (DS) kanye nokushintshana kwe-molar (MS): Ukuthambekela kwamanzi kwe-HPMC kuhlobene kakhulu nezinga lokushintshana kwe-hydroxypropyl kanye ne-methyl kuma-molecule ayo. Uma izinga lokushintshana liphezulu, kulapho amandla ayo okugcina amanzi eqina khona.

Ibanga lokuthamba:I-HPMC inezinhlobo ezahlukene ze-viscosity(njenge-400, 15000, 100000 mPa·s, njll.). Uma i-viscosity iphakeme, umphumela wokugcina amanzi uba ngcono, kodwa isikhathi sokuncibilika naso siyanda ngokufanele.

Inani lokwengeza: Ukwengeza okufanele kungathuthukisa kakhulu ukusebenza kokugcinwa kwamanzi, kodwa ukwengeza ngokweqile kungabangela ukuthi ikhambi libe lukhuni kakhulu, kuthinte ukwakhiwa noma ukusetshenziswa.

Izinga lokushisa eliphakathi nendawo kanye nomswakama: Izinga lokushisa eliphezulu lisheshisa ukuhwamuka kwamanzi, futhi i-gelation ye-HPMC idlala indima ebalulekile ngalesi sikhathi ekunciphiseni ukulahleka kwamanzi; endaweni enomswakama ophezulu, i-hygroscopicity yayo isobala kakhulu.

5. Izitayela Nezibikezelo Zentuthuko

Ngokuthuthukiswa kwezinto zokwakha eziluhlaza, ukudla okusebenzayo, izinhlelo zokukhishwa kwemithi ezihlakaniphile kanye neminye imikhakha, isidingo sezinto zokukhishwa ezinobungani nemvelo, ezisebenza kahle nezilawulwayo siyakhula. I-HPMC, njenge-ejenti yokugcina amanzi enobungani nemvelo, inamathemba amaningi okusetshenziswa. Iziqondiso zocwaningo lwesikhathi esizayo zingagxila ekuthuthukisweni kwe-HPMC eguquliwe ukuze kuthuthukiswe ukuncibilika kwayo, ukukhishwa okulawulwayo kanye nokubola kwayo ukuze kuhlangatshezwane nezidingo zohlelo lokusebenza ezimweni ezahlukene.

I-Hydroxypropyl methylcellulose isibe yinto ebaluleke kakhulu ezimbonini eziningi ngenxa yokusebenza kwayo okuhle kakhulu kokugcina amanzi, ukuphepha kanye nokuguquguquka. Ngokuthuthuka kobuchwepheshe kanye nokwanda kwezimo zokusetshenziswa, indima yeI-HPMC emkhakheni wezinto zokugcina amanziizogqama kakhulu, futhi izoqhubeka nokudlala indima yayo enhle emikhakheni yamakhemikhali aluhlaza, imithi, ukudla kanye neminye imikhakha.