I-Hydroxypropyl Methyl Cellulose eGquliweyo

IHydroxypropyl methylcellulose isetyenziswa njengento ekrwada ukuvelisa ioyile, enokugqiba ukusetyenziswa kweswekile, iphucule izinga lokusetyenziswa kwezinto ekrwada, inciphise inani elishiyekileyo le-substrate kumhluzi wokuvubela, ukunciphisa iindleko zokucocwa kwamanzi amdaka, kwaye yenze ifomula yophawu. ye-hydroxypropyl methylcellulose iluncedo Iluncedo ekulungiseleleni ibhetshi, ibhetshi kunye neenkqubo eziqhubekayo zokubilisa, ukuthintela ukulawulwa kwezicubu kunye neengxaki ezinxulumene nenkcubeko yedilution;kukwaluncedo ekusetyenzisweni kweenkqubo zokuvundisa.

IHydroxypropyl methylcellulose, i-cellulose ekrwada, inokuba yikotoni esulungekisiweyo, okanye inokuba yinkuni yomthi.Kufuneka ihlulwe ngaphambi okanye ngexesha le-alkalization.Kuyimfuneko ukucofa i-cellulose imathiriyeli ekrwada ngamandla omatshini ukuze kuncitshiswe i-crystallinity kunye ne-polymerization degree, ukwandisa indawo yayo yomphezulu, kwaye emva koko kuphuculwe i-trihydroxyl degree kunye nobuchule bokusabela kwekhemikhali ye-reactant kwiringi yeglucose ye-polymer cellulose.

Nangona i-synthesis ye-hydroxypropyl methylcellulose ingekho nzima, i-alkali, izinto ezikrwada ziyacolwa kwaye zenziwe ialkali.I-Etherification, ukubuyiswa kwe-solvent, ukwahlukana kwe-centrifugal, ukuhlamba kunye nokomisa kwiindawo ezahlukeneyo, kodwa kubandakanya ezininzi iteknoloji eziphambili kunye nolwazi olucebileyo lomxholo.Kwiintlobo ngeentlobo zeemveliso, imeko-bume nganye ineemeko zolawulo zamva nje, ezifana nobushushu, ixesha, uxinzelelo kunye nolawulo lokuqukuqela amaziko ancedisayo kunye nezixhobo zokulawula zisiqinisekiso somgangatho wemveliso ozinzileyo, inkqubo yokuvelisa ethembekileyo, kwaye iyathandeka.

Ekubeni ukusebenza kwe-hydroxypropyl methylcellulose kufana nenye i-ethers e-soluble yamanzi, inokusetyenziswa njenge-ejenti yokwenza ifilimu, i-thickener, i-emulsifier kunye ne-stabilizer kwiipeyinti ze-latex kunye ne-resin-soluble resin coating compositions, ukumelana ne-abrasion, i-coating efanayo kunye. ukunamathela, kunye nokuphucula ukunyanzeliswa komphezulu, ukuzinza kwi-acids kunye neziseko, kunye nokuhambelana ne-pigment yensimbi.I-Hydroxypropyl methylcellulose inefuthe elihle njenge-thickener yeepeyinti ezimhlophe ze-polyvinyl acetate zamanzi.Iqondo lokutshintshwa kwe-cellulose ether liphuculwe, kwaye ukuchasana neebhaktheriya kuphuculwe.