nkhani

Polyvinylpyrrolidoneimatchedwanso PVP, nambala ya CAS ndi 9003-39-8. PVP ndi chinthu chopangidwa ndi polima chosungunuka m'madzi chomwe chimapangidwa kuchokera ku polymerizedN-vinylpyrrolidone (NVP)pansi pa zikhalidwe zina. Panthawi imodzimodziyo, PVP ili ndi kusungunuka kwabwino kwambiri, kukhazikika kwa mankhwala, luso lopanga mafilimu, kawopsedwe kakang'ono, kawopsedwe kakang'ono ka thupi, kuyamwa kwamadzi ndi mphamvu zonyowa, kugwirizanitsa mphamvu, ndi zomatira zotetezera. Itha kuphatikizika ndi zinthu zambiri zachilengedwe komanso zachilengedwe monga zowonjezera, zowonjezera, zida zothandizira, ndi zina.

Polyvinylpyrrolidone (PVP) wakhala akugwiritsidwa ntchito m'madera osiyanasiyana monga mankhwala, zodzoladzola, chakudya ndi zakumwa, mowa, nsalu, zolekana, ndi zina zotero. monga chithunzi kuchiritsa utomoni, CHIKWANGWANI kuwala, zimbale laser, kuukoka kuchepetsa zipangizo, etc. PVP ndi zoyera osiyana akhoza kugawidwa m'magulu anayi: kalasi mankhwala, tsiku mankhwala kalasi, kalasi chakudya, ndi mafakitale kalasi.

Chifukwa chachikuluMtengo PVPItha kugwiritsidwa ntchito ngati co precipitant ndikuti ma ligands mu mamolekyu a PVP amatha kuphatikiza ndi haidrojeni yogwira mu mamolekyu osasungunuka. Kumbali imodzi, mamolekyu ang'onoang'ono amakhala amorphous ndikulowa PVP macromolecules. Kumbali ina, kugwirizana kwa haidrojeni sikumasintha kusungunuka kwa madzi kwa PVP, kotero zotsatira zake ndi kuti ma molekyulu osasungunuka amamwazika mu pVp macromolecules kupyolera mu mgwirizano wa haidrojeni, kuwapangitsa kukhala kosavuta kusungunuka. Pali mitundu yambiri ya PVP, Timasankha bwanji chitsanzocho posankha. Pamene kuchuluka (kuchuluka) kwa PVP kuli kofanana, kuwonjezeka kwa kusungunuka kumachepa mwa dongosolo la PVP K15>PVP K30>PVP K90. Izi zili choncho chifukwa mphamvu ya solubilization ya PVP yokha imasintha mu dongosolo la PVP K15>PVP K30>PVP K90. Nthawi zambiri, pVp K 15 imagwiritsidwa ntchito kwambiri.

Za m'badwo wa PVP: NVP yekha, monomer, amatenga nawo mbali mu polymerization, ndipo mankhwala ake ndi Polyvinylpyrrolidone (PVP). NVP monomer imakumana ndi self crosslinking reaction kapena NVP monomer imakumana ndi crosslinking copolymerization reaction ndi crosslinking agent (yokhala ndi magulu angapo a unsaturated gulu), ndipo mankhwala ake ndi Polyvinylpyrrolidone (PVPP). Tingaone kuti zosiyanasiyana polymerization mankhwala akhoza kupangidwa ndi kulamulira zinthu zosiyanasiyana polymerization ndondomeko.

Timamvetsetsa kayendedwe ka PVP

Kugwiritsa ntchito mafakitale kalasi PVP: PVP-K mndandanda angagwiritsidwe ntchito ngati filimu wothandizira, thickener, lubricant ndi zomatira mu makampani tsiku mankhwala, ndipo angagwiritsidwe ntchito kuphulika, Moss, tsitsi fixative gel osakaniza, tsitsi fixative, etc. Kuwonjezera PVP kwa utoto utoto. ndi zosintha pakusamalira khungu, zotsitsimutsa thovu za ma shampoos, ma dispersants ndi othandizira olumikizana ndi ma wave makongoletsedwe, komanso zonona ndi zoteteza ku dzuwa zimatha kupangitsa kunyowetsa ndi mafuta. Kachiwiri, kuwonjezera PVP ku chotsukira kumakhala ndi anti color effect ndipo kumatha kukulitsa luso loyeretsa.

Kugwiritsa ntchito PVP m'minda yamafakitale ndiukadaulo wapamwamba: PVP itha kugwiritsidwa ntchito ngati ❖ kuyanika pamwamba, dispersant, thickener, ndi zomatira mu inki, inki yosindikiza, nsalu, kusindikiza ndi utoto, ndi machubu azithunzi. PVP imatha kupititsa patsogolo ntchito zomatira pazitsulo, galasi, pulasitiki ndi zinthu zina. Kuphatikiza apo, PVP imagwiritsidwa ntchito kwambiri popatukana nembanemba, ultrafiltration nembanemba, microfiltration nembanemba, nanofiltration nembanemba, kufufuza mafuta, zithunzi kuchiritsa utomoni, utoto ndi zokutira, CHIKWANGWANI kuwala, zimbale laser ndi zina akutuluka chatekinoloje minda.

Kugwiritsa ntchito mankhwala kalasi PVP: Pakati PVP-K mndandanda, k30 ndi chimodzi mwa excipients kupanga ntchito, makamaka kwa wothandizila kupanga, zomatira wothandizila granules, wothandizila-kumasulidwa, adjuvants ndi stabilizer kwa jakisoni, otaya zothandizira, dispersants kwa formulations madzi. ndi chromophores, stabilizers for enzymes and thermosensitive drugs, co precipitants tovuta kulekerera mankhwala, extenders kwa ophthalmic lubricant, ndi ❖ kuyanika opanga mafilimu.

Polyvinylpyrrolidone ndi ma polima ake, monga zida zatsopano zamakina abwino, amagwiritsidwa ntchito kwambiri muzamankhwala, chakudya, mankhwala atsiku ndi tsiku, kusindikiza ndi utoto, zokutira za pigment, zida zamankhwala, zida zochizira madzi ndi magawo ena, ndi chiyembekezo chogwiritsa ntchito msika waukulu. Pambuyo pofufuza mosalekeza kwa zaka zambiri, tapanga zinthu zosiyanasiyana zophatikizira, kuphatikiza izi:

Mwachidule, mndandanda wazinthu za PVP zimagwira ntchito bwino kwambiri ndipo zimagwiritsidwa ntchito kwambiri ngati zowonjezera polima muzamankhwala, zokutira, utoto, utomoni, inki za fiber, zomatira, zotsukira, kusindikiza nsalu ndi utoto. PVP, ngati polima surfactant, itha kugwiritsidwa ntchito ngati dispersant, emulsifier, thickener, leveling agent, mamasukidwe akayendedwe regulator, anti kubalana madzi agent, coagulant, cosolvent, ndi detergent mu machitidwe osiyana kubalalitsidwa.