Pentamethyldiethylenetriamine (pmdeta)

Tsib methyl ob ethyleneamine peb yog cov tshuaj tiv thaiv zoo heev rau cov tshuaj tiv thaiv polyurethane.Nws tsuas yog catalyzes cov tshuaj tiv thaiv foaming, thiab kuj yog siv los sib npaug tag nrho cov foaming thiab gel cov tshuaj tiv thaiv.Nws yog dav siv nyob rau hauv txhua yam ntawm polyurethane rigid ua npuas ncauj, nrog rau polyisocyanurate phaj txhav ua npuas ncauj.Vim nws cov nyhuv foaming muaj zog, nws tuaj yeem txhim kho qhov fluidity ntawm npuas, yog li nws txhim kho cov txheej txheem ntau lawm thiab txhim kho qhov ntim ntawm ntau lawm.Nws feem ntau koom nrog DMCHA thiab lwm yam.Lub tsib methyl ob ethyleneamine peb amine yog siv ib leeg los ua tus catalyst rau polyurethane ua npuas ncauj mis, thiab tseem tuaj yeem muab faib rau lwm cov catalysts.0-2.0 feem ntawm 100 feem ntawm polyol.
Ntxiv rau cov txheej txheem ua npuas ncauj nruj, tsib methyl ob ethyleneamine peb kuj tuaj yeem siv rau hauv kev tsim cov polyether polyurethane mos ua npuas ncauj thiab molding ua npuas ncauj.Piv txwv li, 70% ntawm pentamethylenediethylenetriamine feem ntau yog siv hauv kev tsim cov khoom ua npuas ncauj.Lub catalyst muaj kev ua haujlwm siab, ceev foaming ceev, siab toughness thiab siab bearing muaj peev xwm.Hauv cov npuas mos, 0.1-0.5 phr ntawm cov catalyst ib 100 phr ntawm polyether tuaj yeem tau txais txiaj ntsig zoo dua.Nws kuj tseem siv tau los ua ib qho kev pabcuam catalyst rau cov npuas tawv tawv.
Lub tsib methyl ob ethyleneamine peb amine quaternary ammonium ntsev yog ncua sij hawm catalyst rau mos ua npuas ncauj, uas yog siv los ncua lub sij hawm foaming.Nws yog qhov tsim nyog rau cov khoom ua npuas ncauj nrog cov duab zoo thiab lub thawv hom foaming txheej txheem, thiab txhim kho cov qauv ua npuas ncauj thiab txhim kho cov molding zoo.Qhov ntau ntawm nws tus kheej npaum li cas yog qhov dav heev, thiab qhov kev hloov ntawm qhov ntau npaum li cas tsis muaj kev cuam tshuam rau lub sij hawm whitening;Tab sis ua kom cov koob tshuaj tuaj yeem txo lub sijhawm nce ntawm cov npuas dej thiab txo lub sijhawm kho.