Yintoni iPolyvinylpyrrolidone (PVP)?
Polyvinylpyrrolidone, ishunqulelwe njengePVP.I-Polyvinylpyrrolidone (PVP) i-polymer ye-polymer engabonakaliyo eyenziwa yi-polymerization ye-N-vinylpyrrolidone (NVP) phantsi kweemeko ezithile.Isetyenziswa njenge-adjuvant, i-adjuvant, kunye ne-excipient kwiinkalo ezininzi ezifana neyeza, i-textile, ikhemikhali, isiselo, kunye neekhemikhali zemihla ngemihla.Ngokweemfuno zemveliso, i-PVP inokohlulwa ibe ziindidi ezine: ibakala lemizi-mveliso, ibakala lokuthambisa, ibakala lokutya, kunye nebakala lamayeza.Ii-homopolymers, ii-copolymers, kunye neemveliso ze-polymer ezidityanisiweyo ezidityanisiweyo ezinobunzima bemolekyuli ukusuka kumawaka ukuya ngaphezulu kwesigidi esinye zisetyenziswe ngokubanzi ngenxa yeepropathi zazo ezibalaseleyo nezikhethekileyo.
I-PVP yahlulahlulwe yangamanqanaba amane ngokusekwe kumndilili wobunzima bemolekyuli, kwaye iqhele ukumelwa ngamaxabiso e-K.Amaxabiso e-K ahlukeneyo amele uluhlu oluhambelanayo lwe-avareji ye-molecular weight ye-PVP.Ixabiso le-K ngokwenene lixabiso leempawu ezinxulumene ne-viscosity ehambelana nesisombululo se-PVP samanzi, kunye ne-viscosity yinani lomzimba elinxulumene nobunzima be-molecular of polymers.Ngoko ke, ixabiso le-K lingasetyenziselwa ukubonakalisa ubunzima be-molecular ye-PVP.Ngesiqhelo, eliya lilikhulu ixabiso le-K, kokukhona liphezulu i-viscosity yayo kwaye yomelele ukuncamathela kwayo.Iintlobo eziphambili zeemveliso kunye neenkcukacha ze-PVP zingahlelwa ngamanqanaba e-viscosity ye-K-15, K17, K25, K-30, K60, kunye ne-K-90 ngokusekelwe kubunzima be-molecular.
I-UNILONG INDUSTRY inokubonelela ngoku kulandelayoI-PVP-Kiimveliso zothotho:
| UHLOBO | I-PVP K12 | I-PVP K15 | I-PVP K17 | PVP K25 | PVP K30 | PVP K60 | I-PVP K90 | |
| Imbonakalo | Umgubo omhlophe | |||||||
| K Ixabiso | 10.2-13.8 | 12.75-17.25 | 15.3-18.36 | 22.5-27.0 | 27-32.4 | 54-64.8 | 81-97.2 | |
| Ukungcola okukodwa kwe-NVP (ukungcola A) | (CP2005/USP26) % max | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| (USP31/EP6/BP2007) ppm max | 10 | 10 | 10 | 10 | 10 | 10 | 10 | |
| Amanzi % max | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | |
| Umxholo % min | 95 | 95 | 95 | 95 | 95 | 95 | 95 | |
| pH (5% yesisombululo esinamanzi) | 3.0-5.0 | 3.0-5.0 | 3.0-5.0 | 3.0-5.0 | 3.0-5.0 | 4.0-7.0 | 4.0-7.0 | |
| I-Sulfate ash% max | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |
| Isiqulatho senitrogen ﹪ | 11.5-12.8 | 11.5-12.8 | 11.5-12.8 | 11.5-12.8 | 11.5-12.8 | 11.5-12.8 | 11.5-12.8 | |
| Umxholo we-2-P % max | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | |
| Aldehyde ppm max | 500 | 500 | 500 | 500 | 500 | 500 | 500 | |
| Intsimbi enzima ppm max | 10 | 10 | 10 | 10 | 10 | 10 | 10 | |
| IHydrazine ppm max | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| Ihydrogen peroxide ppm max | 400 | 400 | 400 | 400 | 400 | 400 | 400 | |
I-PVP, njenge-synthetic water-soluble polymer compound, ineempawu eziqhelekileyo zamachiza e-polymer e-soluble yamanzi, kubandakanywa ukukhuselwa kwe-colloid, ifilimu-ifom, i-bonding, i-absorption, i-solubilization okanye i-coagulation.Nangona kunjalo, olona phawu lwayo lwahlukileyo kukunyibilika kwayo okugqwesileyo kunye nokuhambelana komzimba, okuthe kwatsala umdla.Kwii-polymers zokwenziwa, i-PVP, enyibilikayo kumanzi kunye nakwizinyibilikisi ezininzi zendalo, inetyhefu ephantsi, kunye nokuhambelana kakuhle komzimba, ayibonwa ngokuqhelekileyo, ngakumbi kwimimandla esondelelene nempilo yabantu njengamayeza, ukutya, kunye nezinto zokuthambisa.Oku kulandelayo yintshayelelo ethile kwimimandla yesicelo sayo:
Kwintsimi yezithambiso zemihla ngemihla
Kwizinto zokuthambisa zemihla ngemihla, i-PVP kunye ne-copolymer ine-dispersibility enhle kunye nepropathi yokwenza ifilimu.I-PVP inokukhusela i-colloid kwi-lotion, kwaye ingasetyenziswa kwi-fat and non fat creams, njengokuseta ulwelo, isitshizi seenwele kunye ne-ejenti yokuseta i-mousse, i-hair conditioner sunscreen, i-shampoo foam stabilizer, i-agent setting agent, kunye ne-disperant yeenwele kunye ne-affinity agent.Ukongeza i-PVP kwikhrimu yekhephu, i-sunscreen, kunye neearhente zokususa iinwele kunokuphucula ukumanzisa kunye neziphumo zokuthambisa.
Indawo yokuhlamba
I-PVP ineempawu zokuchasa ukungcolisa kunye nemvula kwaye ingasetyenziselwa ukulungisa ulwelo olungafihliyo okanye izicoci ezinzima ezimdaka.Ukongeza i-PVP kwi-detergents kunesiphumo esihle sokulwa nokuguqulwa kombala kwaye kunokwandisa isakhono sokucoca.Xa uhlamba amalaphu, kunokuthintela i-synthetic detergents ekuthukutheliseni ulusu, ngakumbi imicu yokwenziwa.Lo msebenzi ubalasele ngakumbi kunezokucoca i-carboxymethyl cellulose (CMC).I-PVP inokudibaniswa ne-borax njengesithako esisebenzayo ekuqulunqweni kwe-phenolic disinfectant agents zokucoca.Isicoci esenziwe nge-PVP kunye ne-hydrogen peroxide sinemisebenzi yokucoca kunye nokubulala iintsholongwane.
Ukuprintwa kwe-textile kunye nokudaya
I-PVP inobudlelwane obuhle kunye needayi ezininzi zezinto eziphilayo kwaye inokudibanisa kunye ne-hydrophobic synthetic fibers ezifana ne-polyacrylonitrile, i-esters, i-nylon, kunye nezixhobo ze-fibrous ukuphucula amandla okudaya kunye ne-hydrophilicity.Emva kwe-PVP kunye ne-nylon yokufakela i-copolymerization, ilaphu elivelisiweyo liphucule ukuxhathisa ukufuma kunye nokuxhathisa ukufuma.
Iingubo kunye nee-pigments
Ipeyinti kunye neengubo ezifakwe kwi-PVP ziselubala ngaphandle kokuchaphazela umbala wazo wendalo, ukuphucula i-gloss kunye ne-dispersibility ye-coatings kunye ne-pigments, ukuphucula ukuzinza kwe-thermal, kunye nokuphucula ukuchithwa kwee-inki kunye neenki.
Intsimi yezonyango
I-PVP ine-inertness ye-physiological egqwesileyo, ayithathi nxaxheba kwi-metabolism yabantu, kwaye ine-biocompatibility egqwesileyo, engabangeli nakuphi na ukucaphuka eluswini, mucosa, amehlo, njl njl. ingasetyenziselwa njenge-binder yeepilisi kunye ne-granules, i-solvent ye-injection, kunye ne-flow aid yee-capsules;I-Detoxifiers, izandisi, i-lubricants kunye ne-film-forming agents for eye drops, i-dispersants for formulations ye-liquid, i-stabilizers ye-enzymes kunye neziyobisi ze-thermosensitive, kwaye zinokusetyenziswa njengezigcini zokushisa okuphantsi.Isetyenziselwa iilensi zokudibanisa ukunyusa i-hydrophilicity yazo kunye nokuthambisa.Ukongeza, i-PVP ingasetyenziswa kwakhona njengombala kunye ne-X-ray yokuchasana;Ingasetyenziselwa iindlela ezahlukeneyo zedosi yamachiza anje ngeetafile, iigranules, kunye namanzi.Ine-detoxification, i-hemostasis, i-concentration yokwanda kwe-disolution, ukuthintela ukunamathela kwi-peritoneal, kunye nokukhuthaza izinga le-erythrocyte sedimentation.IPVP K30 isungulwe ngokusesikweni ngemvume yesebe lesizwe elilawula amayeza.
Ukulungiswa kokutya
I-PVP ngokwayo ayinayo i-carcinogenic kwaye inokhuseleko lokutya olulungileyo.Inokwenza ii-complexes ezineekhompawundi ezithile ze-polyphenolic (ezifana ne-tannins) kwaye zisetyenziswa ikakhulu njenge-ejenti yokucacisa kunye nokuzinzisa ekuqhubeni ukutya, okufana nebhiya, ijusi yeziqhamo, kunye newayini.I-PVP inokwenza ii-complexes ezineekhompawundi ezithile ze-polyphenolic (ezifana ne-tannins), ezidlala indima ecacileyo kunye ne-anticoagulant kwiziselo zejusi yeziqhamo.Ukusetyenziswa kwe-PVP edibeneyo kwibhiya kunye neziselo zeti kuxhaphake kakhulu.Izinto ze-polyphenolic kwibhiya zinokubopha kunye neeproteni kwibhiya ukwenza i-tannin macromolecular complexes, echaphazela kakhulu incasa yebhiya kwaye inciphise ubomi bayo beshelufu.I-polyvinylpyrrolidone edibeneyo (i-PVPP) inokutshiza nge-tannic acid kunye ne-anthocyanins kwibhiya, ngaloo ndlela icacisa ubhiya, iphucula ukuzinza kwayo yokugcina, kunye nokwandisa ubomi bayo beshelufu.Kwiziselo zetiyi, ukusetyenziswa kwe-PVPP kunokunciphisa ngokufanelekileyo umxholo we-tea polyphenols, kwaye i-PVPP ayihlali kwiziselo zeeti, okwenza ukuba isetyenziswe kwakhona kwaye inciphise kakhulu iindleko.
Iindawo eziphambili zesicelo se-PVP okwangoku zigxininiswe kwiikhemikhali zemihla ngemihla kunye namashishini amayeza, kwaye ukukhula kwala mashishini mabini kuya kuqhubeka nokuqhubela phambili imfuno ephambili yokusetyenziswa kwe-PVP kwixesha elizayo.Kwintsimi ekhulayo ye-PVP, kwi-lithium ibhetri ye-lithium, i-PVP ingasetyenziselwa njenge-dispersant ye-lithium ibhetri ye-electrodes kunye ne-processing aid for conductive materials;Kwishishini le-photovoltaic, i-PVP ingasetyenziselwa njenge-dispersant ukuvelisa umgangatho ophezulu we-spherical powder yesilivere ye-electrode yesilivere ecocekileyo, i-sheet-like powder powder ye-electrode negative paste yesilivere, kunye ne-nano particles yesilivere.Ngophuculo oluqhubekayo lwezinga lokungena kwebhetri ye-lithium kunye nokunyuka kwe-photovoltaic efakwe amandla, ezi zimbini eziphumayo ziya kuqhuba kakhulu imfuno ye-PVP.
Unilong ngumboneleli oqeqeshiweyo, kunye nePVP seriesiphuhliswe kwaye yaveliswa iminyaka elishumi.Ngotshintsho kwimarike, ukunikezelwa kweemveliso zePVP kunqongophala.Okwangoku, songeze imigca emibini yemveliso, kunye nobonelelo olwaneleyo kunye namaxabiso avumayo.Nceda uzive ukhululekile ukubuza.
Ixesha lokuposa: Dec-01-2023