Kaha thepa ea hydroxypropyl methylcellulose e tšoana le li-ether tse ling tse qhibilihang ka metsing, e ka sebelisoa ho li-emulsion coatings le likarolo tsa resin tse qhibilihang ka metsing e le moemeli oa ho etsa filimi, thickener, emulsifier le stabilizer, jj., e leng se fang filimi ea coat ho hanyetsa ho khohlela hantle. Ho koahela le ho khomarela ho ts'oanang, le tsitsipano e ntlafetseng ea bokaholimo, botsitso ho li-acid le metheo, le ho lumellana le mebala ea tšepe.
Kaha HPMC e na le ntlha e phahameng ea gel ho feta MC, e boetse e hanela tlhaselo ea baktheria ho feta li-ether tse ling tsa cellulose, kahoo e ka sebelisoa e le moemeli oa ho teteana bakeng sa liphahlo tsa emulsion tse metsi. HPMC e na le botsitso bo botle ba polokelo ea viscosity le ho qhalana ha eona ho babatsehang, kahoo HPMC e loketse haholo e le qhalanya liphahlong tsa emulsion.
Tšebeliso ea hydroxypropyl methyl cellulose indastering ea ho koahela ke e latelang.
1. Ho hanyetsa ho tlola ha pente ka mokhoa o fapaneng, ho hanyetsa mocheso o phahameng, tlhaloso e khahlanong le baktheria, ho hanyetsa ho hlatsuoa le botsitso ba li-acid le metheo ho molemo; e ka boela ea sebelisoa e le setlolo sa pente se nang le methanol, ethanol, propanol, isopropyl alcohol, ethylene glycol, acetone, methyl ethyl ketone kapa diketone alcohol thickener; Liaparo tse entsoeng ka emulsified tse entsoeng ka HPMC li na le ho ruruha ho monate; HPMC ho feta HEC le EHEC le CMC kaha HPMC e na le phello e ntle ho feta HEC le EHEC le CMC e le setlolo sa pente.
2. Hydroxypropyl methyl cellulose e nketsweng sebaka haholo e na le kganyetso e betere tlhaselong ya baktheria ho feta phetolo e tlase, mme e na le botsitso bo betere ba viscosity ho di-thickeners tsa polyvinyl acetate. Di-ether tse ding tsa cellulose di polokelong ka lebaka la ho senyeha ha ketane ya ether ya cellulose mme di etsa hore viscosity ya ho roala e fokotsehe.
3. pente e hlobolang e ka ba HPMC e qhibilihang ka metsing (moo methoxy e leng 28% ho isa ho 32%, hydroxypropoxy e leng 7% ho isa ho 12%), dioxymethane, toluene, parafini, ethanol, sebopeho sa methanol, e tla sebelisoa holim'a bokaholimo bo otlolohileng, ka viscosity le ho feto-fetoha ho hlokahalang. Pente ena e hlobolang e tlosa boholo ba lipente tse tloaelehileng tsa spray, varnish, enamel, le li-ester tse itseng tsa epoxy, epoxy amides, epoxy amides e catalyzed, acrylates, jj. Pente tse ngata li ka tlosoa ka metsotsoana e seng mekae, lipente tse ling li hloka metsotso e 10 ~ 15 kapa ho feta, pente ena e hlobolang e loketse haholo libaka tsa lehong.
4. Pente ea emulsion ea metsi e ka etsoa ka likarolo tse 100 tsa pigment e sa pheleng kapa ea tlhaho, likarolo tse 0.5 ~ 20 tsa alkyl cellulose e qhibilihang metsing kapa hydroxyalkyl cellulose le likarolo tse 0.01 ~ 5 tsa polyoxyethylene ether kapa ester ester. Mohlala, 'mala o fumanoa ka ho kopanya likarolo tse 1.5 tsa HPMC, likarolo tse 0.05 tsa polyethylene glycol alkyl phenyl ether, likarolo tse 99.7 tsa titanium dioxide le likarolo tse 0.3 tsa carbon black. Motsoako o ntan'o hlohlelletsoa ka likarolo tse 100 tsa 50% polyvinyl acetate e tiileng ho fumana seaparo, 'me ha ho na phapang pakeng tsa filimi e omileng e entsoeng ka ho e sebelisa pampiring e teteaneng le ho e hohla hanyane ka borashe.
Nako ea poso: Mots'eanong-20-2022