Iimpawu zokwenza ifilimu ye-industrial-grade hydroxypropyl methylcellulose (HPMC) yinto ephambili yokusetyenziswa kwayo ngokubanzi kwiinkalo ezininzi zesicelo. I-HPMC yi-ether eselulosi enyibilikayo emanzini esetyenziswa kakhulu kushishino. Iimpawu zayo zokwenza ifilimu zibandakanya iipropati zomatshini, iimpawu ze-optical, ukuzinza kweekhemikhali, ukuhambelana nezinye izithako, kunye nezinye izinto ezininzi.
1. Indlela yokwenza ifilimu
I-HPMC inyibilika emanzini ukwenza isisombululo se-colloidal esicacileyo. Emva kokuba amanzi aphuke, iimolekyuli ze-HPMC kwisisombululo zilungelelanisa kwaye zidibanise omnye nomnye ukwenza ifilimu eqhubekayo kunye namandla athile kunye nokuqina. Ubukho be-hydroxypropyl (-CH2CHOHCH3) kunye namaqela e-methyl (-CH3) kwi-HPMC ye-molecular chain inika ifilimu zombini amandla agqwesileyo omatshini kunye neqondo elithile lokuguquguquka.
2. Iimpawu zoomatshini
Amandla kunye ductility
Iifilimu ze-HPMC zibonisa amandla aphezulu kunye ne-ductility kwaye inokumelana noxinzelelo oluthile lomatshini ngaphandle kokwaphuka. Ezi zixhobo zoomatshini zihambelana nobunzima bemolekyuli, iqondo lokutshintshwa, kunye nokugxilwa kwesisombululo se-HPMC. I-HPMC enobunzima obuphezulu bemolekyuli kunye neqondo lokuthatha indawo lidla ngokwenza iifilimu ezomeleleyo kunye nezomeleleyo. Oku kwenza ukuba i-HPMC ixabiseke kakhulu kwizicelo ezifuna amandla aphezulu koomatshini, njengezinto zokwakha, iingubo, kunye neepilisi zoxubo.
Ukuncamathela
Iifilimu ze-HPMC zinokunamathela kakuhle kwaye zinokubambelela kakuhle kwiindawo ezahlukeneyo ze-substrate, njengephepha, isinyithi, iglasi kunye neplastiki. Le propati yenza ukuba isetyenziswe ngokubanzi kwiingubo kunye ne-adhesives. Ukubambelela kukwachatshazelwa kukugxininiswa kwesisombululo kunye neemeko zokomisa.
3. Iimpawu zamehlo
Iifilimu ze-HPMC zihlala ziselubala okanye ziguquguquka kwaye zineempawu ezibalaseleyo zokukhanya. Ukucaca kwezi filimu kuxhomekeke ikakhulu ekufaniseni isisombululo, iimeko zokomisa, kunye nenani lamaqamu amancinci anokuthi avele ngexesha lenkqubo yokwenziwa kwefilimu. Ukucaca okuphezulu kwenza i-HPMC ibe luncedo kakhulu kwizicelo ezifuna uqwalaselo olubonakalayo, olufana nokupakishwa kokutya, iingubo zamachiza, kunye neengubo zokukhusela.
4. Ukuzinza kweekhemikhali
Ukumelana namanzi
Iifilimu ze-HPMC zineqondo elithile lokuxhathisa amanzi. Nangona i-HPMC ngokwayo i-soluble emanzini, isakhiwo emva kokubunjwa kwefilimu ayinyibiliki ngokulula xa ibonakaliswe emanzini. Le ndawo inenzuzo kwizicelo ezininzi, ezifana ne-putty yokwakha, i-adhesives, kunye neengubo ezisekelwe emanzini. Nangona kunjalo, ukuchasana kwamanzi akukona ngokupheleleyo, kwaye ukucwiliswa ixesha elide emanzini kunokubangela ukuvuvukala okanye ukuphuka kwefilimu.
Ukumelana nemichiza
Ifilimu ye-HPMC inokumelana kakuhle neentlobo zeekhemikhali, ngakumbi kwiindawo ezingathathi hlangothi ze-asidi. Oku kwenza ukuba ifaneleke kwiindawo ezithile ezinobungozi, ezifana neengubo kunye neefilimu ezikhuselayo kwishishini lemichiza. Ukuzinza kweekhemikhali zefilimu ye-HPMC kukwachatshazelwa yinqanaba layo lokudibanisa kunye nokusingqongileyo apho isetyenziswa khona.
5. Iimeko zokwenza ifilimu
Ukugxininiswa kwesisombululo
Uxinzelelo lwesisombululo luchaphazela ngokuthe ngqo umgangatho wokwenza ifilimu ye-HPMC kunye neempawu zefilimu. Ngokubanzi, ugxininiso oluphezulu lwezisombululo ze-HPMC zenza iifilimu ezityebileyo nezinamandla. Nangona kunjalo, ukugxininiswa okuphezulu kakhulu kunokukhokelela kwi-viscosity egqithisileyo yesisombululo, okwenza kube nzima ukusebenzisa ngokulinganayo.
Iimeko zokomisa
Isantya sokumisa kunye nokushisa kunempembelelo ebalulekileyo ekubunjweni kunye neempawu zefilimu. Ukushisa okuphezulu kokumisa kunye nesantya sokumisa ngokukhawuleza ngokuqhelekileyo kukhokelela ekubunjweni kwamaqamu kwifilimu, echaphazela ukucaca kunye neempawu zemishini yefilimu. Inkqubo yokomisa kancinci inceda ukwenza ifilimu efanayo, kodwa inokubangela ukungonelanga kwe-volatilization ye-solvent, echaphazela umgangatho wefilimu.
6. Ukuhambelana nezinye izithako
Ifilimu ye-HPMC ihambelana kakuhle neentlobo zezongezo kunye nezinto ezisebenzayo, ezifana neplastiki, i-crosslinkers, i-fillers, njl. Oku kuhambelana kuvumela ukuba i-HPMC isetyenziswe ngokubanzi ekulungiseleleni izinto ezidibeneyo okanye iingubo ezisebenzayo. Ngokomzekelo, ukongeza i-plasticizers kunokuphucula ukuguquguquka kwefilimu, ngelixa i-agent edibanisa i-cross-link inokunyusa amandla kunye nokuchasana kwamanzi kwefilimu.
7. Iindawo zokufaka izicelo
Izinto zokwakha
Kwizinto zokwakha, iifilimu ze-HPMC zisetyenziselwa udaka oluxubekileyo, i-putty, iingubo kunye nezinye iimveliso. Iimpawu zayo zokwenza ifilimu zinokuphucula ukubambelela, ukuchasana nokuqhekeka kunye nokuxhatshazwa kwamanzi kweemveliso.
Amachiza
Kwintsimi yamachiza, i-HPMC isetyenziswa njengesixhobo sokugquma kwiipilisi zamayeza. Iimpawu zayo zokwenza ifilimu zinokulawula ngokufanelekileyo izinga lokukhululwa kwamachiza kunye nokuphucula ukuzinza kunye nokusebenza kwamachiza.
Ishishini lokutya
Iifilimu ze-HPMC zisetyenziswa njengezinto zokupakisha ezityiwayo kwishishini lokutya elineempawu ezintle zomqobo kunye nokhuseleko.
Iingubo kunye ne-adhesives
Ukuncamathela kunye nokungafihli kweefilimu ze-HPMC kuzenza zibe ziindawo ezifanelekileyo zokwaleka kunye nezinto ezincamathelayo, kwaye zisetyenziswa ngokubanzi kwimizi-mveliso yokugquma kunye nemizi-mveliso yokupakisha.
8. Ukuvumelana nokusingqongileyo
I-HPMC yimveliso elungisiweyo evela kwiselulosi yendalo. Inkqubo yayo yokwenza ifilimu ayifuni izinyibilikisi ezinobungozi kwaye inokonakala kwezinto eziphilayo kunye nobuhlobo bendalo. Oku kwenza ukuba kubaluleke kakhulu ekuphuhliseni i-chemistry eluhlaza kunye nezinto ezizinzileyo.
Iipropati zokwenza ifilimu ye-HPMC ye-industrial grade yenza ukuba ibe yinto eyimfuneko kwiintlobo ezahlukeneyo zezicelo. Iingenelo zayo kumandla omatshini, iipropathi ze-optical, ukuzinza kweekhemikhali, kunye nokuhambelana kakuhle nezinye izinto zinika uluhlu olubanzi lokusebenzisa amandla. Nokuba kukwizinto zokwakha, amayeza, ukupakishwa kokutya, okanye kwiingubo kunye nokuncamathelisa, i-HPMC ibonakalise ukusebenza kakuhle. Ngokuqhubela phambili kwesayensi kunye nobuchwepheshe, iteknoloji yokwenza ifilimu kunye neendawo zokusetyenziswa kwe-HPMC iya kuqhubeka nokwandisa, ikhuthaza ukuphuhliswa kwezicelo ezintsha.
Ixesha lokuposa: Jun-29-2024