litaba

Polyvinylpyrrolidonee boetse e bitsoa PVP, nomoro ea CAS ke 9003-39-8. PVP ke motsoako oa polymer o qhibilihang ka ho feletseng oa metsi o entsoeng ka polymerized ho tlohaN-vinylpyrrolidone (NVP)tlasa maemo a itseng. Ka nako e ts'oanang, PVP e na le solubility e babatsehang, botsitso ba lik'hemik'hale, bokhoni ba ho etsa lifilimi, chefo e tlaase, ho se sebetse ha 'mele, ho monya metsi le matla a mongobo, bokhoni ba ho kopanya, le phello e sireletsang ea sekhomaretsi. E ka kopana le metsoako e mengata ea tlhaho le ea tlhaho e le li-additives, li-additives, lisebelisoa tse thusang, joalo-joalo.

Polyvinylpyrrolidone (PVP) e 'nile ea sebelisoa ka tloaelo likarolong tse sa tšoaneng tse kang meriana, litlolo, lijo le seno, ho ritela, masela, li-membrane tsa karohano, joalo-joalo Ka nts'etsopele ea lihlahisoa tse ncha tsa saense le theknoloji, PVP e sebelisitsoe masimong a joalo a theknoloji e phahameng. e le li-resin tse folisang lifoto, li-fiber tsa Optical, li-laser discs, lisebelisoa tse fokotsang ho hula, joalo-joalo PVP e nang le litlolo tse fapaneng e ka aroloa ka lihlopha tse 'nè: sehlopha sa meriana, kereiti ea letsatsi le letsatsi ea lik'hemik'hale, sehlopha sa lijo le sehlopha sa indasteri.

Lebaka le ka sehloohong hobanePVPe ka sebelisoa e le co precipitant ke hore li-ligands ka limolek'hule tsa PVP li ka kopana le hydrogen e sebetsang ka har'a limolek'hule tse sa tsitsang. Ka lehlakoreng le leng, limolek'hule tse batlang li le nyane li fetoha amorphous 'me li kenya li-macromolecules tsa PVP. Ka lehlakoreng le leng, ho kopanya ha hydrogen ha ho fetole ho qhibiliha ha metsi ho PVP, kahoo phello ke hore limolek'hule tse sa tsitsang li qhalakanngoa ka macromolecules ea pVp ka hydrogen bonding, e leng ho etsang hore ho be bonolo ho qhibiliha. Ho na le mefuta e mengata ea PVP, Re khetha mohlala oo joang ha re khetha. Ha palo (boima) ba PVP bo lekana, ho eketseha ha solubility ho fokotseha ka tatellano ea PVP K15>PVP K30>PVP K90. Sena ke hobane phello ea solubilization ea PVP ka boeona e fetoha ho latela tatellano ea PVP K15>PVP K30>PVP K90. Ka kakaretso, pVp K 15 e sebelisoa haholo.

Mabapi le moloko oa PVP: ke NVP feela, monomer, e kopanelang ho polymerization, 'me sehlahisoa sa eona ke Polyvinylpyrrolidone (PVP). NVP monomer e ba le "self crosslinking reaction" kapa NVP monomer e etsa cross-linking copolymerization reaction le crosslinking agent (e nang le metsoako ea lihlopha tse ngata tsa unsaturated), 'me sehlahisoa sa eona ke Polyvinylpyrrolidone (PVPP). Ho ka bonoa hore lihlahisoa tse fapaneng tsa polymerization li ka hlahisoa ka ho laola maemo a fapaneng a ts'ebetso ea polymerization.

Re utloisisa mokhoa oa ho phalla oa PVP

Kopo ea PVP ea sehlopha sa indasteri: Letoto la PVP-K le ka sebelisoa e le moemeli oa lifilimi, thickener, lubricant le sekhomaretsi indastering ea letsatsi le letsatsi ea lik'hemik'hale, 'me e ka sebelisoa bakeng sa ho phatloha, Moss, gel ea ho lokisa moriri, ho lokisa moriri, joalo-joalo Ho eketsa PVP ho lidae tsa moriri. le li-modifiers bakeng sa tlhokomelo ea letlalo, li-stabilizers tsa foam bakeng sa li-shampoo, li-disperants le li-affinity agents bakeng sa li-wave styling agents, le ho tranelate le setlolo se sireletsang letsatsi ho ka ntlafatsa phello ea ho kolobisa le ho tlotsa. Taba ea bobeli, ho kenyelletsa PVP ho sesepa ho na le phello e ntle ea anti color mme e ka ntlafatsa bokhoni ba ho hloekisa.

Tšebeliso ea PVP masimong a indasteri le a theknoloji e phahameng: PVP e ka sebelisoa e le sesebelisoa sa ho roala ka holim'a metsi, dispersant, thickener, le sekhomaretsi ka li-pigments, li-inks tsa khatiso, masela, khatiso le dae, le li-tubes tsa litšoantšo tsa mebala. PVP e ka ntlafatsa ts'ebetso ea sekhomaretsi ho tšepe, khalase, polasetiki le lisebelisoa tse ling. Ho feta moo, PVP e ntse e sebelisoa ka ho fetisisa ho li-membrane tsa karohano, li-membrane tsa ultrafiltration, li-membrane tsa microfiltration, li-membrane tsa nanofiltration, ho hlahloba oli, li-resin tsa ho folisa lifoto, lipente le liaparo, li-fiber tsa Optical, li-laser discs le masimo a mang a hlahang a theknoloji e phahameng.

Tšebeliso ea PVP ea boemo ba meriana: Har'a letoto la PVP-K, k30 ke e 'ngoe ea li-excipients tsa maiketsetso tse sebelisoang, haholo-holo bakeng sa li-agent tsa tlhahiso, li-adhesive agents bakeng sa granules, li-agent tse lokollang nako e telele, li-adjuvants le li-stabilizer bakeng sa liente, lithuso tsa phallo, li-disperants bakeng sa metsoako ea metsi. le chromophores, stabilizers bakeng sa li-enzyme le lithethefatsi tse thermosensitive, li-precipitants bakeng sa ho thata ho mamella lithethefatsi, li-extensions tsa litlolo tsa mahlo, le li-agent tsa ho roala lifilimi.

Polyvinylpyrrolidone le li-polymers tsa eona, e le lisebelisoa tse ncha tsa lik'hemik'hale tse ntle, li sebelisoa haholo meriana, lijo, lik'hemik'hale tsa letsatsi le letsatsi, khatiso le ho daea, liaparo tsa pigment, lisebelisoa tsa likokoana-hloko, lisebelisoa tsa ho hloekisa metsi le masimo a mang, ka tebello e pharaletseng ea kopo ea 'maraka. Kamora lilemo tsa boithuto bo tsoelang pele, re thehile lihlahisoa tse fapaneng tsa ho kopanya, ho kenyelletsa tse latelang:

Ka bokhutšoanyane, letoto la lihlahisoa tsa PVP li na le ts'ebetso e ntle haholo 'me li sebelisoa haholo e le li-additives tsa polymer meriana, liaparo, li-pigments, li-resin, li-inki tsa fiber, li-adhesives, li-detergents, khatiso ea masela le ho daea. PVP, joalo ka polymer surfactant, e ka sebelisoa e le dispersant, emulsifier, thickener, leveling agent, viscosity regulator, anti reproduction liquid agent, coagulant, cosolvent, le detergent mekhoeng e fapaneng ea ho hasana.