Pentamethyldiethylenetriamine (pmdeta)

ʻElima methyl ʻelua ethyleneamine ʻekolu he mea hoʻoheheʻe nui loa no ka hopena polyurethane.Hoʻopiʻi nui ia i ka hopena foaming, a hoʻohana ʻia hoʻi e kaulike i ka hopena holoʻokoʻa a me ka hopena gel.Hoʻohana nui ʻia ia i nā ʻano polyurethane rigid foam, me ka polyisocyanurate plate rigid foam.Ma muli o kona hopena hoʻohua ikaika, hiki iā ia ke hoʻomaikaʻi i ka wai o ka pua, no laila e hoʻomaikaʻi i ke kaʻina hana a hoʻomaikaʻi i ka nui o ka hana.Kaʻana pinepine me DMCHA a pēlā aku.Hoʻohana ʻia ka ʻelima methyl two ethyleneamine ʻekolu amine ma ke ʻano he catalyst no ka polyurethane foam formula, a hiki ke kaʻana like me nā catalysts ʻē aʻe.0-2.0 ʻāpana no 100 mau ʻāpana o ka polyol.
Ma waho aʻe o ka hoʻoheheʻe ʻia ʻana o ka huʻa paʻa, hiki ke hoʻohana ʻia ʻelima methyl two ethyleneamine ʻekolu i ka hana ʻana o ka polyether polyurethane soft foam a me ka molding foam.No ka laʻana, hoʻohana nui ʻia ka 70% o ka pentamethylenediethylenetriamine i ka hoʻokumu ʻana i nā huahana foam palupalu.ʻO ka catalyst ka hana kiʻekiʻe, ka wikiwiki o ka huʻa, ka paʻakikī kiʻekiʻe a me ka hiki ke halihali.I loko o ka huʻa palupalu, 0.1-0.5 phr o ka catalyst no 100 phr o ka polyether hiki ke loaʻa ka hopena maikaʻi aʻe.Hiki ke hoʻohana ʻia ma ke ʻano he catalyst kōkua no ka huʻa paʻakikī.
ʻO ka ʻelima methyl two ethyleneamine ʻekolu amine quaternary ammonium paʻakai he mea hoʻopaneʻe lohi no ka huʻa palupalu, i hoʻohana ʻia e hoʻolōʻihi i ka manawa huʻa.He kūpono ia no nā huahana foam me ke ʻano paʻakikī a me ke kaʻina hana pahu pahu, a hoʻomaikaʻi i ke ʻano o ka pahu a hoʻomaikaʻi i ka maikaʻi o ka hoʻoheheʻe ʻana.ʻO ka laulā o kāna ʻano ponoʻī he ākea loa, a ʻaʻohe hopena o ka hoʻololi ʻana o ka dosage i ka manawa keʻokeʻo;Akā ʻo ka hoʻonui ʻana i ka dosage hiki ke hoʻopōkole i ka manawa piʻi o ka pua a hoʻopau i ka manawa hoʻōla.