Taw qhia rau Kev Siv Polyethyleneimine

Polyethyleneimine yog dej-soluble polymer. Cov kua tsis muaj xim lossis lub teeb daj daj, hygroscopic, soluble hauv dej, ethanol, thiab insoluble hauv benzene. Cov dej concentration ntawm cov khoom lag luam feem ntau yog 20% ​​mus rau 50%.

Siv:

1. High adhesion thiab adsorptive Amino pawg tuaj yeem ua rau cov carboxyl pawg los tsim cov hydrogen bonds. Amino pawg tuaj yeem cuam tshuam nrog pawg carboxyl los tsim cov ntawv cog lus ionic. Amino pawg tuaj yeem hnov ​​​​mob nrog carbonyl pawg los tsim cov ntawv cog lus covalent. Polyethyleneimine muaj cov qauv ntawm cov pawg polar (amino pawg) thiab pawg hydrophobic (vinyl pawg), thiab tuaj yeem ua ke nrog cov khoom sib txawv. Siv cov kev sib txuas ua ke no, nws tuaj yeem siv dav hauv cov nplaum, cov ntawv pleev xim, txheej, cov nplaum thiab lwm yam.

2. High cationic polyethyleneimine muaj nyob rau hauv ib tug polymer cation nyob rau hauv dej, yuav neutralize thiab adsorb tag nrho cov anionic tshuaj, thiab yuav chelate hnyav hlau ions. Vim nws cov cationicity siab, nws yuav siv tau nyob rau hauv cov teb ntawm papermaking dej kho, electroplating kua thiab dispersant.

3. Reactive polyethyleneimine muaj reactive thawj thiab theem nrab amines, yog li nws tuaj yeem yooj yim hnov ​​​​mob nrog epoxy, acid, isocyanate compounds thiab acid gases. Siv cov yam ntxwv no, nws tuaj yeem siv los ua epoxy resin reactant, aldehyde adsorbent thiab xim kho tus neeg saib xyuas.