amakuru

Polyvinylpyrrolidoneyitwa kandi PVP, numero CAS ni 9003-39-8. PVP ni synthèque yamazi-soluble polymer compound igizwe na polymerized kuvaN-vinylpyrrolidone (NVP)mu bihe bimwe. Muri icyo gihe, PVP ifite imbaraga zo gukemura neza, gutuza imiti, ubushobozi bwo gukora firime, uburozi buke, kutagira umubiri, kwinjiza amazi nubushobozi bwo gutanga amazi, ubushobozi bwo guhuza, hamwe ningaruka zo gukingira. Irashobora guhuza hamwe nibintu byinshi bidahuje ibinyabuzima nibinyabuzima nkinyongera, inyongeramusaruro, ibikoresho bifasha, nibindi.

Polyvinylpyrrolidone (PVP) yari isanzwe ikoreshwa mubice bitandukanye nk'ubuvuzi, amavuta yo kwisiga, ibiryo n'ibinyobwa, inzoga, imyenda, imashini zitandukanya, n'ibindi. Hamwe no guteza imbere ibicuruzwa bishya bya siyansi n’ikoranabuhanga, PVP yakoreshejwe mu buhanga buhanitse cyane nk'amafoto yo gukiza amafoto, fibre optique, disiki zigabanya imiti, n'ibindi. amanota.

Impamvu nyamukuru yabyoPVPirashobora gukoreshwa nka co precipitant ni uko ligande muri molekile ya PVP ishobora guhuza hamwe na hydrogène ikora muri molekile idashonga. Ku ruhande rumwe, ugereranije molekile ntoya ihinduka amorphous hanyuma ikinjira muri macromolecules ya PVP. Ku rundi ruhande, guhuza hydrogène ntabwo bihindura amazi ya PVP, bityo igisubizo nuko molekile zidashobora gukwirakwira muri pVp macromolecules binyuze muri hydrogène, bigatuma byoroshye gushonga. Hariho ubwoko bwinshi bwa PVP, Nigute dushobora guhitamo iyo moderi mugihe duhisemo. Iyo umubare (misa) ya PVP ari umwe, ubwiyongere bwo kugabanuka bugabanuka ukurikije gahunda ya PVP K15> PVP K30> PVP K90. Ni ukubera ko ingaruka ya solubilisation ya PVP ubwayo ihinduka muburyo bwa PVP K15> PVP K30> PVP K90. Mubisanzwe, pVp K 15 ikoreshwa cyane.

Kubyerekeranye nigisekuru cya PVP: NVP gusa, monomer, igira uruhare muri polymerisation, kandi ibicuruzwa byayo ni Polyvinylpyrrolidone (PVP). Monomer ya NVP ihura na reaction yo kwisubiraho cyangwa monomer ya NVP ihura na cololymerisation ihuza abantu hamwe na agent ihuza (irimo ibice byinshi bituzuye byuzuye), kandi ibicuruzwa byayo ni Polyvinylpyrrolidone (PVPP). Birashobora kugaragara ko ibicuruzwa bitandukanye bya polymerisation bishobora kubyara mugucunga uburyo butandukanye bwa polymerisiyonike.

Twunvise inzira ya PVP

Gukoresha urwego rwinganda PVP: Urutonde rwa PVP-K rushobora gukoreshwa nkibikoresho bya firime, kubyimbye, gusiga amavuta no gufatira mu nganda z’imiti ya buri munsi, kandi birashobora gukoreshwa mu guturika, Moss, gel gutunganya umusatsi, gutunganya umusatsi, n'ibindi. Icya kabiri, kongeramo PVP kumashanyarazi bigira ingaruka nziza zo kurwanya ibara kandi birashobora kongera ubushobozi bwisuku.

Gukoresha PVP mubikorwa byinganda nubuhanga buhanitse: PVP irashobora gukoreshwa nkibikoresho byo gutwikira hejuru, gutatanya, kubyimbye, no gufatira muri pigment, gucapa wino, imyenda, gucapa no gusiga irangi, hamwe nigituba cyamabara. PVP irashobora kunoza imikorere yo guhuza ibyuma, ibirahuri, plastike nibindi bikoresho. Byongeye kandi, PVP igenda ikoreshwa cyane mubice byo gutandukana, ultrafiltration membrane, microfiltration membrane, membrane nanofiltration, ubushakashatsi bwamavuta, ifoto ikiza ibisigazwa, amarangi hamwe nudukingirizo, fibre optique, disiki ya laser hamwe nizindi nzego zigaragara cyane zikoranabuhanga.

Gukoresha urwego rwimiti PVP: Mubice bya PVP-K, k30 nimwe mubikoresho byogukoresha bikoreshwa cyane cyane mubikoresho bitanga umusaruro, imiti ifata imiti ya granules, imiti irekura-imiti, imiti igabanya ubukana, imiti igabanya ubukana, imiti igabanya ubukana, imiti igabanya ubukana, imiti igabanya ubukana, imiti igabanya ubukana, imiti igabanya ubukana, imiti igabanya ubukana, imiti igabanya ubukana, imiti igabanya ubukana, imiti igabanya ubukana, imiti igabanya ubukana. gutwikira ibikoresho.

Polyvinylpyrrolidone na polymers zayo, nkibikoresho bishya bya shimi byiza, bikoreshwa cyane mubuvuzi, ibiryo, imiti ya buri munsi, gucapa no gusiga irangi, gutwika pigment, ibikoresho biologiya, ibikoresho byo gutunganya amazi nizindi nzego, bifite amahirwe menshi yo gukoresha isoko. Nyuma yimyaka yubushakashatsi bukomeje, twateje imbere ibicuruzwa bitandukanye byo gukusanya, harimo ibi bikurikira:

Muri make, PVP yuruhererekane rwibicuruzwa bifite imikorere myiza kandi bikoreshwa cyane nkinyongeramusaruro ya polymer mubuvuzi, ibifuniko, pigment, resin, wino ya fibre, ibifata, ibikoresho, ibikoresho byo gucapa no gusiga irangi. PVP, nka polymer surfactant, irashobora gukoreshwa nka dispersant, emulifier, kubyimbye, kuringaniza, kugenzura ibibyimba, imiti igabanya ubukana, coagulant, cosolvent, na detergent muri sisitemu zitandukanye.