Hydroxypropyl methyl seluplose (hpmc)sisisele esisetyenziswa ngamanzi anyibilikiswe amanzi, esisetyenziswa ngokubanzi kwizinto zokwakha, iingubo, amayeza nokutya. Kwizinto zokwakha ezisekwe kwisamente, i-HPMC, njenge-modifier, ihlala yongezwe ukuba ungqengqele ungqengqelo, ngakumbi kwinkqubo yokwakha nokusetyenziswa. Inefuthe elibonakalayo kulwelo, ukugcinwa kwamanzi, ukungasebenzi kunye nokunganyangeki kodaka.

 

I-1. Isiphumo se-HPMC kwi-strodity yokufa yesamente
Ubuqhetseba bokuhombisa kwesamente luyinto ebalulekileyo ukulinganisa intsebenzo yayo yokwakha, echaphazela ngqo umsebenzi wokwakha kunye nomgangatho. Njengezinto ze-polymer, i-HPMC ineentshukumo ezilungileyo zamanzi kunye nomsebenzi womphezulu. Emva kokuba wongezwe ngodaka, inokwenza ifilimu ecekeceke ngokusebenzisana ngokudibeneyo, yandisa i-viscosity yodaka, kwaye ke iphucule udaka kunye noludaka. Ngokukodwa, i-HPMC inokuhlengahlengisa ngokufanelekileyo ukungangqinelani kodaka, kwenza kube lula ukufaka kwaye kunikezelwe ngokulinganayo ngexesha lenkqubo yokwakha, ukunqanda ubunzima bokwakha, ukunqanda ubunzima bokwakha okubangelwa kuko ukukoma kodaka.

I-HPMC inokwandisa ixesha elivulekileyo lodaka, oko kukuthi, yonyusa ixesha lokusetyenziswa komhlaba ngexesha lolwakhiwo, kwaye uphephe ukwenza ulwakhiwo lwamanzi, ngakumbi kubushushu obuphezulu kunye nendawo eyomileyo.

 

I-2. Isiphumo se-HPMC ekuphendhlweni wamanzi esonga
Ukugcinwa kwamanzi kodaka lwesamente kubalulekile ukuba lukhuni kwaye uphuhliso lwamandla. Kuba inkqubo ye-hydration yengqokelela ifuna amanzi awaneleyo, ukuba ilahleko yamanzi yodaka ithakama kakhulu kwaye i-hydration yesamente ayigqitywanga, iya kuchaphazela ngokuthe ngqo amandla okugqibela kunye nokuqina kodaka. I-HPMC inokuphucula ngokufanelekileyo ukugcinwa kwamanzi. I-hydroxypropy ye-hydropyl kunye namaqela e-methyl equlethwe kwimozulu yayo ye-molekyuli inee-hydrophiility, ezinokwenza i-suble yamanzi e-suble amanzi kubulali kwaye inciphise izinga lokuphuma kwamanzi.

Ingakumbi kubushushu obuphezulu kunye neemeko eziphantsi zokufuma, ukongezwa kwe-HPMC kungayithintela inkqubo yomisa isamente yesamente, kwaye ke phucula amandla okugqibela kunye nokuchasana nodaka. Izifundo zibonise ukuba amandla engcinezelo kunye nokuqina kodaka ngexabiso elifanelekileyo le-HPMC yongezwa ngokubanzi kune-HPMC kwinkqubo yexesha elide.

 

I-3. Iziphumo ze-HPMC kwi-Crack Pating yesamente yesamente
Iingxaki yingxaki eqhelekileyo echaphazela umgangatho wokufakelwa kwesamente, ngakumbi phantsi kwempembelelo yezinto ezifana ne-shrink eyomileyo, ukutshintsha kobushushu, udaka, udaka luthambile. Ukongezwa kwe-HPMC kunokuphucula ngokufanelekileyo ukunganyangeki kodaka, ikakhulu ngale miba ilandelayo:

Ukuphucula i-elasticy kunye neplastiki yodaka: i-HPMC inee-elasticy kunye neplastiki, enokuphelisa uxinzelelo olubangelwa kukungcungcutheka ngexesha lokungcungcutheka ngexesha lokucheba.
Yandisa i-adhesions kunye namandla amanxuwa odaka: i-HPMC inokuphucula umlinganiso kunye namandla amanxuwa odaka, ngakumbi xa umhlaba ophantsi ungalingani okanye ububi obukhulu bungalunganga.
Lawula i-Shranti yokuThengisa: ngokulawula i-hydration ye-qumerationres, i-HPMC inokulibazisa ukulahleka kwamanzi esimemeni kunye nokunciphisa i-shrinkid enokubangelwa kukwenzeka kwezinto ezinqabileyo.

 

4. Isiphumo se-HPMC kumandla kunye nokuqina kwesamente yesamente
Ngelixa ukuphuculwa kokusebenza kunye nokunganyangeki kwesamente yesamente, i-HPMC ikwanefuthe elithile kumandla alo kunye nokuqina. Nangona ukongezwa kwe-HPMC kuya kunciphisa kakhulu amandla okuqala kodaka ngenxa yokuba isakhiwo semolekyuli sayo siyinxalenye yamanzi efunwayo yesamente efunekayo, e-HPMC inceda amandla okugqibela, ephucukileyo.

Ukongeza, i-HPMC inokuphucula ukunyangwa kokuqina kwesamente, ukunciphisa ukhukuliseko lodaka ngamanzi okanye imichiza, kwaye uphucule ukuqina kwayo. Oku kwenza ukuba udaka nge-HPMC luyongezelelekile ukuba lube nexesha elide lokusebenza kwixesha elide okanye kwiindawo ezinobuso, ngakumbi ngokufanelekileyo kumhlobiso wodonga olungaphandle, phantsi kwamanye amasimi.

 

I-5. Amathemba okwenza isicelo se-HPMC kwizinto zokwakha ezisekwe
Ngemfuno ekhulayo yokusebenza ngokusebenza kakhulu kumzi-mveliso wokwakha, i-HPMC, njengeyona nto ibalulekileyo, ibonakalise amathemba abanzi anezicelo ezisekwe kwizinto zokwakha ezisekwe kwizinto zokwakha. Ukongeza kwizicelo zesintu njengokutsala kodonga kunye nodaka lomgangatho, i-HPMC inokusetyenziswa kwimveliso yodaka lokuziqokelela, udaka oluxubileyo kunye nezinye iimveliso zokuphucula ukusebenza ngokubanzi kodaka.

Ngokuphuculwa kweemfuno zokwakha ukhuseleko lwendalo esingqongileyo kunye nongcoliseko olusezantsi kunye ne-VOC ephantsi (i-Votile ePhakamileyo) Iimpawu ze-HPMC nazo zikwenza ukuba kunokubakho kusebenza ngezinto eziluhlaza. Kwangelo xesha, ngokuphuhliswa kwetekhnoloji eqhubekayo, ukuguqulwa kunye neefom zezicelo ze-HPMC kuya kubanda ngakumbi, zibonelela ngezinto ezinokubakho kulwaziso olusekwe kwisamente.

 

Njengesimo esibalulekileyo sokucofa uhadi, i-hydroxypropyl methylcelcelcelsulose (i-HPMC) iphucula kakhulu ukusebenza kwezenzi kunye nokusebenza kwamanzi esakhiwo sesamente ngokuphucula ubulwele, ukugcinwa kwamanzi kunye namandla odaka. Ngokuphuculwa okuqhubekayo kweemfuno zezinto zokwakha, indawo yokusetyenziswa kwe-HPMC iya kwandiswa, yaba yinto ephambili ekukhuthazeni uphuhliso lwezinto zokwakha zangoku.