Diethyltoluenediamine (DETDA) CAS 68479-98-1

Diethyl-toluene-diamine (DETDA), nambala ya CAS 68479-98-1 ndi mankhwala onunkhira a diamine, omwe ali ofanana ndi Ethacure 100 ndi DETDA 80, a polyurea ndi polyurethane (PU).

Popeza ndi chida chowonjezera unyolo chothandiza kugwiritsa ntchito polyurethane, DETDA ndi yankho labwino kwambiri chifukwa ndi lotsika mtengo komanso labwino kwambiri, makamaka pa RIM (reaction injection molding) ndi SPUA (Spray Polyurea Elastomer). DETDA imalola polyurethane/epoxy kuchira munthawi yochepa kwambiri, yopanda tack mumasekondi ndikutseka bwino pamwamba kuti iteteze pansi, makoma, madenga ndi milatho. Chabwino kwambiri, polyurea yamtundu wa DETDA imaphimba ndikutseka malo oyima mumasekondi ochepa popanda kugwa.

DETDA ndiye chowonjezera unyolo chodziwika bwino kwambiri mumakampani opanga polyurethane, chili ndi kukhuthala kochepa, chitha kugwiritsidwa ntchito mosavuta komanso choteteza chilengedwe. Popeza ndi madzi, DETDA imatha kukonzedwa kutentha kwa chipinda ndikuchiritsidwa bwino. Kuphatikiza apo, ma elastomer amtundu wa DETDA ali ndi mphamvu yolimba kwambiri mofanana ndi a mtundu wa MOCA. Pakadali pano, pali poizoni wochepa komanso fumbi lochepa mufakitale yopanga poyerekeza ndi MOCA.

Mofanana ndi momwe imagwiritsidwira ntchito mu polyurethane ndi polyurea ngati mankhwala ochiritsira, DETDA imagwiritsidwa ntchito ngati chowumitsira ndi cholumikizira cha ma epoxy resins. Magulu ake awiri a amine amachitapo kanthu ndi magulu anayi a epoxy, ndipo amapanga malo olumikizirana otentha kwambiri pamodzi ndi bisphenol A. Mwa kusintha mlingo, DETDA imatha kupereka mayankho mwachangu komanso kulumikizana mwachangu ngati pakufunika.

Poyerekeza ndi DMTDA, DimethylthioToluene Diamie, palibe fungo losasangalatsa la sulfure ndipo zinthu zomalizidwa bwino zimakhala zolimba chifukwa zimakhala ndi makhalidwe abwino.