izindaba

I-Polyvinylpyrrolidoneibizwa nangokuthi i-PVP, inombolo ye-CAS ithi 9003-39-8.I-PVP iyinhlanganisela ye-polymer encibilikayo ngokuphelele eyenziwe ngamanzi eyenziwe i-polymerized kusukaI-N-vinylpyrrolidone (NVP)ngaphansi kwezimo ezithile.Ngesikhathi esifanayo, i-PVP ine-solubility enhle kakhulu, ukuzinza kwamakhemikhali, ikhono lokwenza ifilimu, ubuthi obuphansi, ukungabi namandla komzimba, ukumuncwa kwamanzi kanye nekhono lokuthambisa, ikhono lokubopha, kanye nomphumela wokunamathela ovikelayo.Ingahlangana nezinhlanganisela eziningi ze-inorganic kanye ne-organic njengezithasiselo, izithasiselo, izinto ezisizayo, njll.

I-Polyvinylpyrrolidone (PVP) ngokuvamile isetshenziswe emikhakheni ehlukahlukene efana nemithi, izimonyo, ukudla nesiphuzo, ukuphuza utshwala, izindwangu, ulwelwesi oluhlukanisayo, njll. Ngokuthuthukiswa kwemikhiqizo emisha yesayensi nezobuchwepheshe, i-PVP isetshenziswe emikhakheni yobuchwepheshe obuphezulu. njengama-resin okuphulukisa isithombe, i-Optical fiber, ama-laser discs, izinto zokunciphisa ukuhudula, njll. I-PVP enezinhlanzeko ezihlukene ingahlukaniswa ngamamaki amane: ibanga lemithi, ibanga lamakhemikhali nsuku zonke, ibanga lokudla, kanye nebanga lezimboni.

Isizathu esikhulu sokuthi kunganiI-PVPingasetshenziswa njenge-co precipitant ukuthi ama-ligand kuma-molecule e-PVP angahlangana ne-hydrogen esebenzayo kuma-molecule angancibiliki.Ngakolunye uhlangothi, ama-molecule amancane aba amorphous futhi afaka ama-macromolecule e-PVP.Ngakolunye uhlangothi, i-hydrogen bonding ayiguquli ukuncibilika kwamanzi kwe-PVP, ngakho-ke umphumela wukuthi ama-molecule angancibiliki ahlakazeka kuma-macromolecules we-pVp ngokusebenzisa i-hydrogen bonding, okwenza kube lula ukuhlakazeka.Kunezinhlobo eziningi ze-PVP, Sikhetha kanjani leyo modeli lapho sikhetha.Uma inani (isisindo) le-PVP lifana, ukwanda kokuncibilika kuncipha ngokohlelo lwe-PVP K15>PVP K30>PVP K90.Lokhu kungenxa yokuthi umphumela wokuhlanganisa we-PVP ngokwawo uyashintsha ngokulandelana kwe-PVP K15>PVP K30>PVP K90.Ngokuvamile, i-pVp K 15 isetshenziswa kakhulu.

Mayelana nesizukulwane se-PVP: yi-NVP kuphela, i-monomer, ebamba iqhaza ku-polymerization, futhi umkhiqizo wayo yi-Polyvinylpyrrolidone (PVP).I-NVP monomer ibhekana ne-self crosslinking reaction noma i-NVP monomer ibhekana ne-cross-linking copolymerization reaction ne-crosslinking agent (equkethe izinhlanganisela zeqembu eziningi ezingagcwalisiwe), futhi umkhiqizo wayo yi-Polyvinylpyrrolidone (PVPP).Kungabonakala ukuthi imikhiqizo ehlukahlukene ye-polymerization ingakhiqizwa ngokulawula izimo zenqubo ye-polymerization ehlukene.

Siyakuqonda ukugeleza kwenqubo ye-PVP

Ukusetshenziswa kwe-PVP yezinga lezimboni: Uchungechunge lwe-PVP-K lungasetshenziswa njenge-ejenti yefilimu, i-thickener, i-lubricant ne-adhesive embonini yamakhemikhali yansuku zonke, futhi ingasetshenziselwa ukuqhuma, i-Moss, ijeli yokulungisa izinwele, ukulungiswa kwezinwele, njll. Ukwengeza i-PVP kumadayi wezinwele. kanye nezilungisi zokunakekelwa kwesikhumba, iziqinisi zegwebu zamashampoos, izisabalalisi kanye nama-affinity ejenti ama-wave styling ejenti, kanye nekhilimu ne-sunscreen kungathuthukisa umphumela wokumanzisa nowokugcoba.Okwesibili, ukwengeza i-PVP kumshini wokuhlanza kunomphumela omuhle wokulwa nombala futhi kungathuthukisa ikhono lokuhlanza.

Ukusetshenziswa kwe-PVP emikhakheni yezimboni kanye nobuchwepheshe obuphezulu: I-PVP ingasetshenziswa njenge-ejenti yokugqoka ngaphezulu, i-dispersant, thickener, kanye ne-adhesive ku-pigments, oyinki bokuphrinta, izindwangu, ukuphrinta nokudaya, namashubhu ezithombe ezinemibala.I-PVP ingathuthukisa ukusebenza kokubopha kokunamathela kwensimbi, ingilazi, ipulasitiki nezinye izinto.Ngaphezu kwalokho, i-PVP isetshenziswa kabanzi ekuhlukaniseni ulwelwesi, ulwelwesi lwe-ultrafiltration, ulwelwesi lwe-microfiltration, ulwelwesi lwe-nanofiltration, ukuhlola uwoyela, ama-resin wokuphulukisa izithombe, upende kanye nezingubo, i-Optical fiber, ama-laser discs nezinye izinkambu ezikhulayo zobuchwepheshe obuphezulu.

Ukusetshenziswa kwe-PVP yebanga lokwelapha: Phakathi kochungechunge lwe-PVP-K, i-k30 ingenye yezinto ezisizayo ezisetshenziswayo, ikakhulukazi kuma-ejenti okukhiqiza, ama-adhesive agents for granules, ama-agent-release-release agents, ama-adjuvant kanye neziqinisi zokujova, izinsiza zokugeleza, izisabalalisi zokwakhiwa koketshezi. kanye nama-chromophores, iziqinisi zama-enzyme nezidakamizwa ezinciphisa ukushisa, izithasiselo zokuvimbela izidakamizwa okunzima ukuzibekezelela, izandisi zamafutha okugcoba amehlo, nama-ejenti ahlanganisa amafilimu.

I-Polyvinylpyrrolidone kanye nama-polymers ayo, njengezinto ezintsha zamakhemikhali amahle, asetshenziswa kakhulu kwezokwelapha, ukudla, amakhemikhali ansuku zonke, ukuphrinta nokudaya, ukumbozwa kwe-pigment, izinto zebhayoloji, izinto zokuhlanza amanzi kanye neminye imikhakha, ngamathemba okufaka isicelo emakethe ebanzi.Ngemva kweminyaka yokuhlola okuqhubekayo, sithuthukise imikhiqizo ehlukahlukene yokuhlanganisa, kuhlanganise nalokhu okulandelayo:

Ngamafuphi, uchungechunge lwemikhiqizo ye-PVP lusebenza kahle kakhulu futhi lusetshenziswa kabanzi njengezithasiselo ze-polymer kwezokwelapha, okokugqoka, izingulube, ama-resin, oyinki be-fiber, ama-adhesives, okokuhlanza, ukuphrinta izindwangu kanye nokudaya.I-PVP, njenge-polymer surfactant, ingasetshenziswa njengesihlakazeka, i-emulsifier, i-thickener, i-ejenti yokulinganisa, isilawuli se-viscosity, i-ejenti ye-anti reproduction liquid, i-coagulant, i-cosolvent, ne-detergent ezinhlelweni ezihlukene zokuhlakazeka.