I-hydroxypropyl methylcellulose isetyenziswa njenge-substrate yezinto eziluhlaza ukuvelisa ioyile, enokuphumeza ukusetyenziswa kweswekile iyonke, iphucule izinga lokusetyenziswa kwezinto eziluhlaza, inciphise inani eliseleyo le-substrate kumhluzi wokubilisa, kwaye inciphise iindleko zonyango lwamanzi amdaka. Le hydroxypropyl methylcellulose Uphawu oluphambili lunceda ekwenzeni ngcono iinkqubo zokubilisa ezihlanganisiweyo, ezidityanisiweyo kunye neenkqubo zokubilisa eziqhubekayo, ziphephe uthotho lweengxaki ezinje ngokulawula ukwakheka okuphakathi kunye nesantya sokuxutywa; ikwanceda ekulawuleni inkqubo yokubilisa.
I-Hydroxypropyl methylcellulose, i-cellulose yezinto eziluhlaza, inokuba yi-cotton okanye i-pulp yomthi ecoliweyo. Kuyimfuneko kakhulu ukuyityumza ngaphambi kokuba i-alkalization okanye ngexesha le-alkalization. Ukutyumza kukutshabalalisa izinto eziluhlaza ze-cellulose ngamandla oomatshini. Ulwakhiwo lwemeko yokuhlanganiswa kwee-macromolecules ze-cellulose lunokunciphisa inqanaba le-crystallinity kunye ne-polymerization, lwandise indawo yayo yomphezulu, ngaloo ndlela luphucula ukufikeleleka kunye nokukwazi ukuphendula kweekhemikhali kwe-reagent yokusabela kumaqela amathathu e-hydroxyl kwiqela le-glucose ring ye-cellulose macromolecule.
Nangona umgaqo wokwenziwa kwe-hydroxypropyl methylcellulose etherification ungeyonto inzima, iimeko ezahlukeneyo ze-alkalization, ukutyumza izinto eziluhlaza, i-etherification, ukubuyiswa kwe-solvent, ukwahlulahlula i-centrifugal, ukuhlamba kunye nokomisa kubandakanya inani elikhulu leetekhnoloji eziphambili kunye nolwazi oluninzi. Kwiintlobo ezahlukeneyo zeemveliso, imeko-bume nganye ineemeko zolawulo zamva nje, ezifana nobushushu, ixesha, uxinzelelo kunye nolawulo lokuhamba kwezinto. Izixhobo ezincedisayo kunye nezixhobo zolawulo ziziqinisekiso ezilungileyo zomgangatho wemveliso ozinzileyo kunye neenkqubo zemveliso ezithembekileyo.
Ekubeni ukusebenza kwe-hydroxypropyl methylcellulose kufana nezinye ii-ethers ezinyibilikayo emanzini, ingasetyenziswa kwipeyinti ye-latex kunye nezinto zepeyinti ye-resin enyibilikayo emanzini njenge-arhente yokwenza ifilimu, i-thickener, i-emulsifier kunye ne-stabilizer.
Yenza ifilimu yokugquma ibe nokumelana okuhle nokuguguleka, ukulingana kunye nokunamathela, kwaye iphucule uxinzelelo lomphezulu, uzinzo kwi-asidi kunye ne-alkali, kunye nokuhambelana neepigment zesinyithi. I-Hydroxypropyl methylcellulose inefuthe elihle njengesithambisi sepeyinti ye-polyvinyl acetate emhlophe esekwe emanzini. Umgangatho wokutshintshwa kwe-cellulose ether uyanda, kwaye ukumelana nokukhukuliseka kwebhaktheriya nako kuyandiswa.
Ixesha lokuthumela: Disemba-22-2022