MC ndi methyl cellulose, yomwe imapezeka pochiza thonje yoyenga ndi alkali, kugwiritsa ntchito methyl chloride ngati othandizira apakati, ndikupanga ma etheluuse kudzera m'machitidwe angapo. Nthawi zambiri, kuchuluka kwa zolowa ndi 1.6 ~ 2.0, ndipo solubility ndizosiyananso ndi madigiri osiyanasiyana. Ndi ya etherose ya etheose.
(1) Kusunga kwamadzi kwamethyl celluloseZimatengera kuchuluka kwake, kuwonekera, luso la tinthu takutha. Nthawi zambiri, ngati kuchuluka kwa kuwonjezera, kukoma mtima ndikochepa, ndipo ma visy ndi akulu, malo osungira madzi ndi okwera. Pakati pawo, kuchuluka kwa kuwonjezerapo kuli ndi chisonkhezero chachikulu pamadzi osunga madzi, ndipo kuchuluka kwa ma virus sikufanana ndi kuchuluka kwa kuchuluka kwa madzi osunga madzi. Chiwerengero chophweka chimatengera kuchuluka kwa mawonekedwe a ma cellulose ndi kukometsa kwa tinthu tambiri. Pakati pa cellulose yomwe ili pamwambapa, methyl cellulose ndi hydroxypropyl meth celyl cellulose imakhala ndi mitengo yapamwamba yamadzi.
(2) Methylcellulose imasungunuka m'madzi ozizira, koma zovuta kusungunuka m'madzi otentha, ndipo yankho lake la madzi ndi lokhazikika mu pH = 3 ~ 12. Imakhala ndi kulumikizana bwino ndi wowuma, Guar Gum, etc. ndi ambiri okonda. Kutentha kukafika kutentha kwa kutentha, chodabwitsa cha gelation chimachitika.
(3) Kusintha kwa kutentha kumakhudzanso kuchuluka kwa madzi a methyl cellulose. Nthawi zambiri, kutentha kwambiri, kumadzaza madzi. Ngati kutentha kwa matope kupitirira 40 ° C, kusunga kwamadzi kwa methyl cellulose kudzakhala koopsa kwambiri, komwe kungasokoneze kugwiritsidwa ntchito kwa matope.
(4) methyl cellulose imakhudzanso kugwirira ntchito ndi kutsatira matope. "Zetheon" Apa amatanthauza adtheion kuwoneka pakati pa chitsimikizo cha wogwira ntchito ndi khoma lalikulu, ndiye kuti, kusweka kwa matope. Kutsatira ndi kwakukulu, kukana matope ndi kwakukulu, ndipo mphamvu yofunikira ndi ogwira ntchito muzogwiritsa ntchito amagwiritsanso ntchito, ndipo zomanga za matope ndizosauka. Methylcellulose adhesion ali pamlingo woyenera mu cellulose ether ether.
HPMC ndi hydroxypropyl methy cellulose, yomwe ndi cellulose yopanda ionic yopangidwa ndi thonje atachiritsa a alkali, pogwiritsa ntchito ma protheraide oxide ndi methyl zimachitika. Mulingo wazolowa m'malo mwake 1.2 mpaka 2.0. Zinthu zake zimasiyana malinga ndi gawo la methoxyl zomwe zili ndi hydroxypropyl.
(1) Hydroxypropyll methylcellulose imasungunuka mosavuta m'madzi ozizira, koma imakumana ndi zovuta pakusungunuka m'madzi otentha. Koma kutentha kwake kwamadzi otentha kumakhala kokulirapo kuposa kwa methyl cellulose. Kusungunuka m'madzi ozizira kumathandizanso kwambiri poyerekeza ndi methyl cellulose.
. Kutentha kumakhudzanso mamasukidwe awo, pamene kutentha kumakulirakulira, ma virucy amachepetsa. Koma mawonekedwe ake samakhudzidwa ndi kutentha kwambiri kuposa methyl cellulose. Njira yake imakhazikika posungira kutentha.
. Diasc Soda ndi madzi a laimu samagwira ntchito pang'ono pa ntchito yake, koma alkali amatha kufulumizitsa kufalikira kwake ndikuwonjezera mamasukidwe. Hydroxypropyll methyllulose ndi yokhazikika pamchere wambiri, koma pamene kuchuluka kwa mcherewu ndi wokwera, mamasukidwe a hydroxypropyll so methylcellulose yankho limakonda kukula.
(4) Kusunga kwamadzi kwahydroxypypyl methylcelluloseZimatengera kuchuluka kwake, ma viccect, etc. Kusunga madzi pansi pazomwezo ndizokwera kuposa momwe zimakhalira.
. Monga mowa wa mulyvinyl, madzi owuma, masamba chingamu, etc.
(6) Kutsatira kwa hydroxypropyl meth.
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Post Nthawi: Apr-282024