Polyvinylpyrrolidone (PVP) yog dab tsi?
Polyvinylpyrrolidone, luv ua PVP. Nws yog siv ua adjuvant, additive, thiab excipient hauv ntau qhov chaw xws li tshuaj, textile, tshuaj lom neeg, dej haus, thiab tshuaj txhua hnub. Raws li cov khoom xav tau, PVP tuaj yeem muab faib ua plaub hom: qib kev lag luam, qib tshuaj pleev ib ce, qib zaub mov, thiab qib tshuaj. Homopolymers, copolymers, thiab cov khoom sib txuas polymer series nrog cov qhov hnyav molecular sib piv txij li ntau txhiab mus rau ntau dua ib lab tau siv dav vim lawv cov khoom zoo heev thiab tshwj xeeb.
PVP muab faib ua plaub theem raws li nws qhov nruab nrab molecular hnyav, thiab feem ntau yog sawv cev los ntawm K tus nqi. Cov nqi K sib txawv sawv cev rau qhov sib txawv ntawm qhov nruab nrab molecular hnyav ntawm PVP. Tus nqi K yog qhov tseeb tus nqi yam ntxwv ntsig txog viscosity ntawm PVP aqueous kua, thiab viscosity yog qhov ntau ntawm lub cev ntsig txog qhov hnyav molecular ntawm polymers. Yog li ntawd, tus nqi K tuaj yeem siv los piav qhia qhov nruab nrab molecular hnyav ntawm PVP. Feem ntau, qhov loj dua tus nqi K, qhov siab dua nws cov viscosity thiab nws cov adhesion muaj zog. Cov khoom tseem ceeb thiab cov lus qhia ntawm PVP tuaj yeem faib ua viscosity theem ntawm K-15, K17, K25, K-30, K60, thiab K-90 raws li qhov hnyav molecular.
UNILONG INDUSTRY tuaj yeem muab cov hauv qab noPVP-Kcov khoom series:
| HOM | PVP K12 | PVP K15 | PVP K17 | PVP K25 | PVP K30 | PVP K60 | PVP K90 | |
| Qhov tsos | Hmoov dawb | |||||||
| Tus Nqi K | 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 | |
| Ib qho kev tsis huv (kev tsis huv A) | (CP2005/USP26) % siab tshaj | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| (USP31/EP6/BP2007) ppm siab tshaj | 10 | 10 | 10 | 10 | 10 | 10 | 10 | |
| Dej% siab tshaj | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | |
| Cov ntsiab lus % feeb | 95 | 95 | 95 | 95 | 95 | 95 | 95 | |
| pH (5% kua dej) | 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 | |
| Sulfate tshauv% max | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |
| Cov ntsiab lus ntawm Nitrogen﹪ | 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 | |
| 2-P cov ntsiab lus% siab tshaj plaws | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | |
| Aldehyde ppm siab tshaj plaws | 500 | 500 | 500 | 500 | 500 | 500 | 500 | |
| Hlau hnyav ppm max | 10 | 10 | 10 | 10 | 10 | 10 | 10 | |
| Hydrazine ppm siab tshaj plaws | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| Hydrogen peroxide ppm siab tshaj | 400 | 400 | 400 | 400 | 400 | 400 | 400 | |
PVP, ua cov tshuaj polymer uas yaj tau hauv dej, muaj cov yam ntxwv dav dav ntawm cov tshuaj polymer uas yaj tau hauv dej, suav nrog kev tiv thaiv colloid, kev tsim zaj duab xis, kev sib txuas, kev nqus dej noo, kev yaj lossis kev sib xyaw ua ke. Txawm li cas los xij, nws qhov tshwj xeeb tshaj plaws yog nws qhov kev yaj zoo heev thiab kev sib raug zoo ntawm lub cev, uas tau nyiam mloog. Hauv cov polymers hluavtaws, PVP, uas yaj tau hauv dej thiab feem ntau cov kuab tshuaj organic, muaj kev lom tsawg, thiab kev sib raug zoo ntawm lub cev, tsis tshua pom, tshwj xeeb tshaj yog hauv cov teb uas cuam tshuam nrog tib neeg kev noj qab haus huv xws li tshuaj, khoom noj, thiab tshuaj pleev ib ce. Cov hauv qab no yog kev qhia tshwj xeeb rau nws cov cheeb tsam thov:
Hauv thaj chaw ntawm cov tshuaj pleev ib ce txhua hnub
Hauv cov tshuaj pleev ib ce txhua hnub, PVP thiab copolymer muaj cov khoom sib xyaw zoo thiab cov khoom ua zaj duab xis. PVP tuaj yeem tiv thaiv cov colloid hauv tshuaj pleev ib ce, thiab tuaj yeem siv rau hauv cov tshuaj pleev ib ce uas muaj roj thiab tsis muaj roj, ua cov kua teeb tsa, tshuaj tsuag plaub hau thiab mousse teeb tsa, tshuaj pleev plaub hau, tshuaj pleev thaiv hnub, tshuaj zawv plaub hau ua npuas ncauj stabilizer, tshuaj teeb tsa nthwv dej, thiab tshuaj zas plaub hau thiab cov neeg sawv cev sib txuas. Ntxiv PVP rau cov tshuaj pleev ib ce daus, tshuaj pleev thaiv hnub, thiab cov neeg tshem tawm plaub hau tuaj yeem ua rau cov dej noo thiab lubrication zoo dua.
Chaw ntxuav khaub ncaws
PVP muaj cov yam ntxwv tiv thaiv kev ua qias tuaj thiab rov ua kom dej nag los, thiab siv tau los ua cov kua pob tshab lossis cov tshuaj ntxuav uas ua rau dej nag ntau. Kev ntxiv PVP rau cov tshuaj ntxuav muaj cov txiaj ntsig zoo tiv thaiv kev hloov xim thiab tuaj yeem txhim kho kev ntxuav. Thaum ntxuav cov ntaub, nws tuaj yeem tiv thaiv cov tshuaj ntxuav hluavtaws kom tsis txhob ua rau khaus tawv nqaij, tshwj xeeb tshaj yog cov xov hluavtaws. Qhov kev ua tau zoo no zoo dua li cov tshuaj ntxuav carboxymethyl cellulose (CMC). PVP tuaj yeem sib xyaw nrog borax ua cov khoom xyaw zoo hauv kev tsim cov tshuaj tua kab mob phenolic. Cov tshuaj ntxuav uas muaj PVP thiab hydrogen peroxide muaj cov haujlwm ntawm kev ua kom dawb thiab tua cov kab mob.
Kev luam ntawv thiab zas xim rau ntaub
PVP muaj kev sib raug zoo nrog ntau cov organic dyes thiab tuaj yeem sib xyaw nrog cov hydrophobic synthetic fibers xws li polyacrylonitrile, esters, nylon, thiab cov ntaub ntawv fibrous los txhim kho lub zog dyeing thiab hydrophilicity. Tom qab PVP thiab nylon grafting copolymerization, cov ntaub tsim tau txhim kho nws cov dej noo thiab dej noo tiv thaiv.
Cov tshuaj pleev xim thiab cov xim pleev xim
Cov xim thiab cov txheej txheej uas muaj PVP yog pob tshab yam tsis cuam tshuam rau lawv cov xim ntuj, txhim kho qhov ci thiab kev sib kis ntawm cov txheej txheej thiab cov xim, txhim kho kev ruaj khov thermal, thiab txhim kho kev sib kis ntawm cov kua mem thiab cov kua mem.
Kev kho mob teb
PVP muaj kev tsis sib haum xeeb zoo heev, tsis koom nrog tib neeg lub cev metabolism, thiab muaj kev sib raug zoo heev, uas tsis ua rau khaus rau daim tawv nqaij, mucosa, qhov muag, thiab lwm yam. PVP qib kho mob yog ib qho ntawm peb yam tshuaj tshiab tseem ceeb uas tau tawm tswv yim thoob ntiaj teb, uas tuaj yeem siv ua cov binder rau cov ntsiav tshuaj thiab granules, cov tshuaj sib xyaw rau kev txhaj tshuaj, thiab cov khoom pab ntws rau cov tshuaj ntsiav; Detoxifiers, extenders, lubricants thiab cov neeg sawv cev ua zaj duab xis rau cov tee qhov muag, dispersants rau cov kua formulations, stabilizers rau enzymes thiab cov tshuaj thermosensitive, thiab kuj tuaj yeem siv ua cov tshuaj preservatives qis-kub. Siv rau cov iav sib cuag kom nce lawv cov hydrophilicity thiab lubricity. Tsis tas li ntawd, PVP kuj tseem tuaj yeem siv ua cov xim thiab X-ray contrast agent; Nws tuaj yeem siv rau ntau hom tshuaj xws li ntsiav tshuaj, granules, thiab dej. Nws muaj detoxification, hemostasis, nce kev sib xyaw ua ke, tiv thaiv kev sib txuas ntawm peritoneal, thiab txhawb nqa erythrocyte sedimentation rate. PVP K30 tau raug tshaj tawm nrog kev pom zoo ntawm lub koom haum tswj hwm tshuaj hauv tebchaws.
Kev ua zaub mov
PVP nws tus kheej tsis yog carcinogen thiab muaj kev nyab xeeb zoo rau zaub mov. Nws tuaj yeem tsim cov complexes nrog cov polyphenolic compounds tshwj xeeb (xws li tannins) thiab feem ntau yog siv los ua tus neeg sawv cev clarifying thiab stabilizing hauv kev ua zaub mov, xws li npias, kua txiv hmab txiv ntoo, thiab cawv. PVP tuaj yeem tsim cov complexes nrog cov polyphenolic compounds tshwj xeeb (xws li tannins), uas ua lub luag haujlwm clarifying thiab anticoagulant hauv cov dej haus kua txiv hmab txiv ntoo. Kev siv cross-linked PVP hauv npias thiab dej haus tshuaj yej yog qhov dav heev. Cov tshuaj polyphenolic hauv npias tuaj yeem khi nrog cov protein hauv npias los tsim cov tannin macromolecular complexes, uas cuam tshuam loj heev rau qhov saj ntawm npias thiab luv nws lub txee lub neej. Crosslinked polyvinylpyrrolidone (PVPP) tuaj yeem chelate nrog tannic acid thiab anthocyanins hauv npias, yog li ua kom cov npias clarifying, txhim kho nws qhov kev ruaj ntseg cia, thiab ntev nws lub txee lub neej. Hauv cov dej haus tshuaj yej, kev siv PVPP tuaj yeem txo cov ntsiab lus ntawm tshuaj yej polyphenols, thiab PVPP tsis nyob hauv cov dej haus tshuaj yej, ua rau nws rov siv dua thiab txo cov nqi ntau heev.
Cov chaw siv tseem ceeb ntawm PVP tam sim no yog tsom mus rau kev lag luam tshuaj lom neeg thiab tshuaj txhua hnub, thiab kev loj hlob ntawm ob qho kev lag luam no yuav txuas ntxiv tsav tsheb qhov kev thov tseem ceeb rau kev siv PVP yav tom ntej. Hauv thaj chaw tshiab ntawm PVP, hauv kev lag luam roj teeb lithium, PVP tuaj yeem siv ua cov khoom tawg rau cov electrodes roj teeb lithium thiab cov khoom pab ua rau cov ntaub ntawv conductive; Hauv kev lag luam photovoltaic, PVP tuaj yeem siv ua cov khoom tawg los tsim cov hmoov nyiaj zoo spherical rau cov khoom siv electrode zoo, cov hmoov nyiaj zoo li daim ntawv rau cov khoom siv electrode tsis zoo, thiab cov khoom nano nyiaj. Nrog rau kev txhim kho tas mus li ntawm tus nqi nkag mus rau hauv roj teeb lithium thiab kev nce ntawm lub peev xwm teeb tsa photovoltaic, ob thaj chaw tshiab no yuav tsav tsheb qhov kev thov rau PVP.
Unilong yog ib lub tuam txhab kev tshaj lij, thiabPVP seriestau tsim thiab tsim tawm tau kaum xyoo. Nrog rau kev hloov pauv hauv kev ua lag luam, kev muab khoom PVP tsis txaus. Tam sim no, peb tau ntxiv ob txoj kab ntau lawm, nrog kev muab khoom txaus thiab tus nqi zoo. Thov koj xav nug.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-01-2023