Polyethylenimine (PEI)yog ib qho polymer uas yaj tau hauv dej. Qhov concentration hauv dej ntawm cov khoom lag luam feem ntau yog 20% txog 50%. PEI yog polymerized los ntawm ethylene imide monomer. Nws yog ib qho cationic polymer uas feem ntau tshwm sim ua kua lossis khoom tsis muaj xim lossis daj nrog ntau yam qhov hnyav molecular thiab cov qauv sib txawv.
| Kev Huv Huv Xaiv Tau | ||||
| MW 600 | MW 1200 | MW 1800 | MW 2000 | MW 3000 |
| MW 5000 | MW 7000 | MW 10000 | MW 20000 | MW 20000-30000 |
| MW 30000-40000 | MW 40000-60000 | MW 70000 | MW 100000 | MW 270000 |
| MW600000-1000000 | MW 750000 | MW 2000000 | ||
Yog dab tsipolyethyleneiminekev ua haujlwm?
1. Cov amino pawg muaj kev nplaum siab, cov amino pawg nqus tau zoo tuaj yeem ua rau cov hydroxyl pawg los ua hydrogen bond, amine pawg tuaj yeem ua rau cov carboxyl pawg los ua ionic bond, amine pawg kuj tuaj yeem ua rau cov carbon acyl pawg los ua covalent bond. Tib lub sijhawm, vim nws cov polar pawg (amine) thiab hydrophobic pawg (vinyl) qauv, nws tuaj yeem ua ke nrog ntau yam tshuaj sib txawv. Nrog cov zog khi no, nws tuaj yeem siv dav hauv kev sib khi, kua mem, xim, binder thiab lwm yam.
2. Cov polyvinyl imide uas muaj cov cationic siab muaj nyob rau hauv daim ntawv ntawm polycation hauv dej, uas tuaj yeem neutralize thiab nqus tag nrho cov tshuaj anionic. Nws kuj chelates cov hlau hnyav ions. Nrog nws cov khoom cationic siab, nws tuaj yeem siv rau hauv kev ua ntawv, kev kho dej, kev daws teeb meem plating, dispersant thiab lwm yam teb.
3. Polyethylenimine muaj zog heev vim yog cov amines thawj thiab theem nrab uas muaj zog heev, yog li nws tuaj yeem yooj yim cuam tshuam nrog epoxy, acids, isocyanate compounds thiab acid gases. Siv cov yam ntxwv no, nws tuaj yeem siv ua epoxy reactant, aldehyde adsorbent thiab tus neeg sawv cev kho xim.
Polyethylenimine siv rau dab tsi?
Polyethylenimine (PEI)yog ib qho polymer compound uas siv tau ntau yam, suav nrog tab sis tsis txwv rau:
1. Kev kho dej thiab kev lag luam ntawv. Ua ib yam khoom siv ntub dej, nws siv rau hauv cov ntawv uas tsis muaj kua nplaum (xws li ntawv lim dej, ntawv so kua mem, ntawv so quav, thiab lwm yam), uas tuaj yeem txhim kho lub zog ntub dej ntawm daim ntawv thiab txo qhov puas tsuaj ntawm kev ua ntawv, tib lub sijhawm ua kom cov dej lim ntawm cov pulp sai dua thiab ua rau cov fibers me me yooj yim rau flocculate.
2. Tus neeg sawv cev kho xim. Nws muaj lub zog khi rau cov xim kua qaub thiab siv tau ua tus neeg sawv cev kho thaum cov xim kua qaub zas xim rau ntawv.
3. Kev hloov kho fiber thiab zas xim pab txhawb. Rau kev kho fiber, xws li lub cev tiv thaiv, hnab looj tes tiv thaiv kev txiav, hlua, thiab lwm yam.
4. Cov ntaub ntawv hluav taws xob. Hauv kev lag luam hluav taws xob, polyethylene imide zaj duab xis tuaj yeem siv ua txheej cais, cov khoom rwb thaiv tsev thiab txheej npog ntawm cov khoom siv hluav taws xob, thiab lwm yam, nrog kev ua tau zoo rwb thaiv tsev thiab tiv taus kub.
5. Ntim khoom noj. Ua ib yam khoom ntim khoom noj, nws muaj qhov zoo ntawm kev tiv taus dej noo, tiv taus roj zoo, tsis muaj tshuaj lom, tsis muaj saj, tiv taus kub siab, thiab lwm yam, thiab siv dav hauv kev ntim nqaij, nqaij qaib, txiv hmab txiv ntoo, zaub, kas fes thiab lwm yam khoom.
6. Cov ntaub ntawv kho mob. Polyvinylimine siv tau rau hauv cov khoom siv kho mob, cov cuab yeej kuaj mob, cov ntim khoom kho mob, thiab lwm yam, xws li cov ntaub qhwv kho mob thiab cov yeeb yaj kiab pob tshab kho mob.
7. Cov nplaum. Ua ib qho nplaum ua tau zoo, nws yog siv rau hauv kev tsim cov khoom siv hauv aerospace, cov khoom siv hluav taws xob, cov khoom siv tsheb thiab lwm yam.
8. Cov neeg sawv cev kho dej thiab cov tshuaj dispersants. Nws yog dav siv rau hauv kev kho dej ua ntawv, electroplating kua, dispersant thiab lwm yam teb. Cov neeg nqa noob caj noob ces. Polyvinylimide yog ib qho vector tsis yog-viral rau kev xa noob caj noob ces, tshwj xeeb tshaj yog haum rau kev sib koom ua ke ntawm ntau lub plasmids.
Tsis tas li ntawd,polyethyleniminekuj muaj cov yam ntxwv ntawm kev nplaum siab, kev nqus siab, cation siab, kev ua haujlwm siab, thiab lwm yam, thiab nws kuj siv dav hauv cov teb ntawm cov xim, kua mem, nplaum, kev kho fiber, kev kho dej phwj thiab lwm yam.
Feem ntau, polyvinylimide yog ib qho polymer uas muaj ntau yam kev siv, thiab nws cov khoom tuaj yeem hloov kho thiab ua kom zoo dua los ntawm kev hloov qhov hnyav molecular, cov qauv thiab kev ua haujlwm.
Lub sijhawm tshaj tawm: Lub Peb Hlis-18-2024