1. Taw qhia rau NMP
N-methylpyrrolidone,npe hu: NMP; 1-methyl-2pyrrolidone; N-methyl-2-pyrrolidone. Tsis muaj xim pob tshab oily kua nrog me ntsis amine tsw. Tsawg volatility, zoo thermal thiab tshuaj stability, thiab muaj peev xwm evaporate nrog dej vapor. Nws yog hygroscopic. Sensitive rau lub teeb. Boiling point (oC, ib txwm siab) 202. Nws yog yooj yim soluble nyob rau hauv dej, ethanol, ether, acetone, ethyl acetate, chloroform thiab benzene, thiab muaj peev xwm yaj feem ntau cov organic thiab inorganic tebchaw, polar gases, ntuj thiab hluavtaws polymer tebchaw. N-methylpyrrolidone yog siv dav hauv kev lag luam xws li lithium roj teeb, tshuaj, tshuaj tua kab, pigments, tshuaj ntxuav, thiab cov ntaub ntawv insulating.
2. Qhov xwm thiab stability ntawm NMP
1). Cov kua tsis muaj xim, tsis hnov tsw ntawm ammonia, tsawg toxicity ntawm cov khoom no. Nws yog miscible nrog dej thiab soluble nyob rau hauv feem ntau cov organic solvents xws li ether thiab acetone. Nws tuaj yeem yaj feem ntau cov organic thiab inorganic tebchaw, polar gases, ntuj thiab hluavtaws polymer tebchaw.
2). Chemical zog: kuj ruaj khov nyob rau hauv nruab nrab kua. Tom qab 8 teev hauv 4% sodium hydroxide tov, 50% ~ 70% yuav hydrolyzed. Hydrolysis tshwm sim maj mam hauv cov concentrated hydrochloric acid los tsim 4-methylaminobutyric acid CH3NH (CH2) 3COOH. Vim yog cov tshuaj tiv thaiv ntawm pawg carbonyl, ketal lossis thiopyrrolidone tuaj yeem tsim.
3). Nws reacts nrog olefins nyob rau hauv lub xub ntiag ntawm lub hauv paus catalyst, thiab ib tug alkylation cov tshuaj tiv thaiv tshwm sim nyob rau hauv lub thib 3 txoj hauj lwm. N-Methylpyrrolidone tsis muaj zog alkaline thiab tuaj yeem tsim hydrochloride. Nws tsim adducts nrog hnyav hlau ntsev, xws li cua sov nrog nickel bromide rau 150°C los tsim NiBr2 (C5H9ON) 3, nrog lub ntsiab lus melting ntawm 105°C.
3.Operation saib xyuas thiab cia txoj kev thiab siv
Txoj kev khaws cia
Khaws rau hauv qhov chaw qhuav, tsis muaj roj, khaws lub ntim kom nruj, thiab khaws cia rau hauv qhov chaw txias, qhuav.
Kev ceev faj ua haujlwm
Tsis txhob raug: Tau txais cov lus qhia tshwj xeeb ua ntej siv. Tsis txhob kov ntawm daim tawv nqaij thiab qhov muag. Tsis txhob ua pa vapor thiab huab cua. Khaws kom deb ntawm qhov hluav taws kub. - Tsis haus luam yeeb. Siv cov kev ntsuas los tiv thaiv hluav taws xob zoo li qub los ntawm kev sib sau.
Kev ceev faj cia
Khaws rau hauv qhov chaw txias. Khaws lub thawv kaw kom nruj thiab khaws cia rau hauv qhov chaw qhuav thiab qhov cua. Cov thawv uas tau qhib lawm yuav tsum tau ua tib zoo rov muab dua thiab khaws cia kom ruaj khov kom tsis txhob xau. Air-filled cia yog rhiab heev rau cov av noo
siv
Cov khoom no yog cov kuab tshuaj zoo heev, cov kuab tshuaj muaj zog nrog kev xaiv thiab kev ruaj ntseg, high-precision electronics, Circuit Court boards, lithium roj teeb, thiab lwm yam., ntxuav cov neeg ua haujlwm: degreasing, degreasing, dewaxing, polishing, xeb tiv thaiv, tshem tawm xim, thiab lwm yam. Coatings, inks, thiab pigments muaj qhov zoo ntawm cov tshuaj toxicity tsawg, kub kub taw tes, muaj zog solubility, non-flammable, biodegradable, recyclable, nyab xeeb siv, thiab haum rau ntau yam formulation hom phiaj.
4. NMP rov siv dua
NMP muaj ntau yam kev siv hauv kev lag luam. Nrog kev txhim kho ntawm lithium roj teeb thev naus laus zis, NMP tau siv dav los ua cov kuab tshuaj polar. Txawm hais tias NMP muaj toxicity tsawg, kev tso tawm ncaj qha yuav ua rau thaj av thiab dej hauv av, thiab kev puas tsuaj rau ib puag ncig tsis tuaj yeem tsis quav ntsej. Peb tawm tswv yim rau kev sivhnyav rov qab tshuabrov ua dua NMP. Qhov ntawd yog txhawm rau txuag cov peev txheej tsim khoom. Nws kuj tiv thaiv ib puag ncig.
