Iipeyinti kunye neengubo zangaphantsi zizinto ezibalulekileyo kushishino lwanamhlanje nolwakhiwo, kwaye zisetyenziselwa ukukhusela nokuhombisa iindawo eziphezulu. Nangona kunjalo, ukwenzela ukuba ezi zinto zinentsebenzo elungileyo yokwakha, ukugubungela okungazinzileyo kunye nokugcinwa kokugcinwa okuzinzileyo phantsi kweendawo ezahlukeneyo zokwakha, ummiselo weepropathi ze-ROOOICRTER zibaluleke kakhulu. I-HydroxyPOpyl Methyl Selelose (HPMC), njenge-polymer ye-polymer esetyenziswa ngamanzi asetyenziswayo, idlala indima ebalulekileyo ekuphuculeni iipropathi ze-pietical zepeyinti kunye neengubo.
Iipropati ezisisiseko ze-HPMC
I-HPMC yindawo ye-seluploese yendalo, elungiselelwe ngokutshintsha amaqela e-hydroxyl kwiimolekyuli ezineemolekyuli ezinamaqela e-fhydroxypropoxy. Iimpawu ze-HPMC zenza ukuba zibe nokuzenzela amandla emanzini kwaye kubonakale kwi-colloidal yesisombululo esibonakalayo. Ukongeza, inommiselo oqinisekileyo wokugcina izinto, igcinwe kakuhle amanzi kwaye iyenza ifilimu efanayo, eyenza ukuba ibe yenye yezona zinto zongezwa kwipeyinti kunye nomzi mveliso wokuthinta.
Indlela yesenzo se-HPMC kwiipeyinti kunye neengubo
Ummiselo wepropathi ye-ruoologies ye-riheoologies yeRhamolocal Progert Prografetal bhekisa ekusetyenzisweni nasekuhambeni kwezinto ezihamba phantsi kwezixhobo zangaphandle. Kwiipeyinti kunye neengubo, iipropathi ze-roheologing ngokufanelekileyo zinceda ukuphucula ukusebenza kwabo nokwakha iingxaki ezinje ngokungcungcutheka nokutshiza. I-HPMC inefuthe elibi kwiinkqubo ezisekwe emanzini. Iyonyusa i-viscosity ye-comboity ngokwenza ubume benethiwekhi, ngaloo ndlela kuphucule intsebenzo yokuhlaselwa kwe-anti-tyhetyeshela ekuqeshweni ngexesha lokwakhiwa, ukuze ichaphazeleke kakhulu kwindawo ethe nkqo ngaphandle kokuhamba okuthe nkqo.
Ngokukodwa, imixokelelwane ye-sucromolecular ye-HPMC yesakhiwo senethiwekhi kwisisombululo, esinokunyusa i-viscofity yenkqubo yamaxabiso asezantsi kwaye abonise iimpawu ze-Shear. Oku kuthetha ukuba xa betsibela okanye ukutshiza, ukugcinwa kwepeyinti kuya kuncipha ngenxa yamandla angaphandle, ukwenza ukuba amandla angagungqiyo, kwaye emva kokuba umqobo angagungqiyo, i-vickosity iya kuphinda iphinde ibuyele kwi-comboing kunye nokungena. Le ndawo yokuncipha i-Shearting iphucula kakhulu ukusebenza ngempumelelo kwepeyinti kunye neengubo.
Ukugcinwa kwamanzi kunye nokuzinza i-HPMC ikwanazo neepropathi ezomeleleyo zokugcina amanzi, ezinokuthi zandise ngokufanelekileyo ixesha elomileyo lepeyinti kunye neengubo, ukuqinisekisa ukuba ukungcungcutheka kwamanzi kungabi nako ukulahleka kwamanzi ngexesha lenkqubo yokomisa. Le ndawo ibaluleke kakhulu kwiindawo ezishushu nezomileyo kuba zithintela amanzi kwipeyinti ekuhlaseleni, iqinisekisa ukuba ukungcungcutheka kudlule ngokulinganayo, kwaye oko kuthoba ipeyinti yepeyinti.
I-HPMC inokuphucula ukugcinwa kozinzo lwepeyinti. Ngenxa yesiphumo sayo sokuqaqamba, kungathintela ukupeyinta ukusuka ekucoceni nasekuhlaleni ngexesha lokugcina ixesha elide, ukugcina ukufana kwenkqubo, kwaye kwandise ubomi be-upefti.
Ukuphucula ukusasazwa kwe-pigment kwifomu yokupeyinta, imigangatho yezinto eziphambili ezichonga umbala kunye nokugubungela. Ukuqinisekisa ukufana kombala kunye nokugubungela okuphezulu kwepeyinti, i-pigment kufuneka ichithwe kancinci kwinkqubo. Ukongezwa kwe-HPMC kunokuphucula ukusasazeka kwe-pigment, ukuze amasuntswana e-pigmed ahlala ekwazinile ukumiswa kwenkqubo yepeyinti, thintela amasuntswana anokuhlala, kwaye aqinisekise ngokungqinelana nombala odadayo. Ukongeza, i-HPMC yenza ukuba inciphise ngokufanelekileyo i-agegrameration yamasuntswana e-pigments kunye nokuphucula amabala kunye negloss yepeyinti.
Thintela i-spashing kunye ne-Brish Mark ngexesha lenkqubo yokwakha, ngakumbi ngokutshiza kunye nokubrasha, iipeyinti kunye neengubo zihlala zijongana nengxaki yokutshisa kunye neebrashi. I-spisharing ayisiyonto yokutya, kodwa inokungcolisa indawo yokwakha, ngelixa uphawu lwebrashi luchaphazela ubuhle kunye ne-aesthetics yendlela yokugqibela. I-HPMC inokukunciphisa ukutshiswa kokupeyinta ngexesha lokwakhiwa ngokuhlengahlengisa i-viscofity kunye nolwelo lwepeyinti, kwaye kwangaxeshanye kwenza ukuba ipeyinti ihambe kakuhle kumphezulu kwaye inciphise isizukulwana samanqaku ebrashi.
Impembelelo ekuqulunqweni kokubhalwa kwenkqubo yokwenza indawo yokucofa ichaphazelekile yipropathi yeRheOology kunye nenkqubo yokomisa yepeyinti. Ngenxa yeepropathi zayo ezilungileyo zefilimu kunye nokugcinwa kwamanzi, i-HPMC inika ipeyinti ukwenza iyunifomu engaphezulu kwaye icaphuke ngexesha lokumisa, ukuphucula ukunganyangeki kwemozulu kunye nokunganyangeki kwemozulu. Kwangelo xesha, oko kunokuphucula ukunamathela okhethekileyo, ukuze ukungqengqeleka kunokubangela iipropathi ezinobuso bomphezulu wemihlaba eyahlukeneyo kwaye basongele ubomi benkonzo.
Ukusetyenziswa kwe-HPMC kwiindidi ezahlukeneyo zengubo
I-HPMC inokusetyenziswa ngokubanzi kwiindidi ezahlukeneyo zeengubo ezifana nepeyinti esekwe emanzini, iipeyinti ze-Latex, kunye neepeyinti zendlela yoyilo. Iipeyinti ezisekwe emanzini, i-HPMC inokuphucula kakhulu uVekyusi wayo, ukuQhagamshela nokuSebenzisa nokuSebenza nokwakha; Kwipeyinti ye-Latex, i-HPMC's Ficketion kunye neePropathi zokugcina amanzi zibalasele kakhulu, ziphucula ngokufanelekileyo umsebenzi wokwakha kunye nomgangatho wokuqalisa kwepeyinti. Kwintsimi ye-DEARTALSCY YOKUGQIBELA, I-HPMC iphucula iipropathi ezichasene ne-anting kunye nokuchasana nepeyinti ngokuhlengahlengisa iipropathi ze-upeological yepeyinti, zilungelelanisa kwiimfuno zolwakhiwo lwendawo enkulu.
I-HPMC, njengesixhobo esisebenzayo se-tickener kunye ne-Rheology Sposho, idlala indima ebalulekileyo kwiipeyinti kunye neengubo. Ayinakuphucula kuphela iimbandezelo ze-sumaological kuphelaathi, ziqinisekise ngokufanayo kwaye zisebenza ngokuhamba kwexesha xa kusenziwa, kodwa ziphucule umgangatho wokugqibela wokuhamba kunye nokwandisa isigcini senkonzo kunye nobomi benkonzo. Ngokuphuhliswa okuqhubekayo kwemveliso yempahla yanamhlanje, ukusetyenziswa kwe-HPMC kuya kuba nako ngakumbi kwaye ube sisiseko esibalulekileyo sokuphucula ukusebenza kwengubo.
IXESHA LOKUQALA: USep-29 ukuya ku-4024