Pentamethyldiethylenetriamine (pmdeta)

Mashanu methyl maviri ethyleneamine matatu akanyanya reactive catalyst ye polyurethane reaction.Iyo inonyanya kukonzeresa kuita kwefuro, uye inoshandiswawo kuenzanisa iyo yakazara furo uye gel kuita.Inoshandiswa zvakanyanya mumhando dzese dze polyurethane rigid foam, kusanganisira polyisocyanurate plate rigid foam.Nekuda kwesimba rayo rekupupa, rinogona kuvandudza kuyerera kwefuro, saka inovandudza maitiro ekugadzira uye inovandudza huwandu hwekugadzira.Inowanzo kugovera neDMCHA nezvimwe zvakadaro.Iwo mashanu methyl maviri ethyleneamine matatu amine anoshandiswa ari ega secatalyst ye polyurethane foam foam formula, uye anogona zvakare kugoverwa pamwe nezvimwe zvinokonzeresa.0-2.0 zvikamu pazana zvikamu zve polyol.
Pamusoro peiyo yakaoma furo kuumbwa, mashanu methyl maviri ethyleneamine matatu anogona zvakare kushandiswa mukugadzirwa kwe polyether polyurethane furo rakapfava uye kuumba furo.Semuenzaniso, 70% yepentamethylenediethylenetriamine inonyanya kushandiswa mukugadzira zvigadzirwa zvefoam zvinyoro.Iyo catalyst ine yakakwira chiitiko, inokurumidza kupupa furo, kusimba kwakanyanya uye yakakwirira kutakura.Mune furo rakapfava, 0.1-0.5 phr yecatalyst pa100 phr yepolyether inogona kuita zvirinani.Inogona zvakare kushandiswa seyanobatsira inokonzeresa foam yakaoma.
Iwo mashanu methyl maviri ethyleneamine matatu amine quaternary ammonium munyu inonokerwa inokonzeresa furo rakapfava, rinoshandiswa kurebesa nguva yekupupuma.Inokodzera zvigadzirwa zvefuro zvine chimiro chakaomarara uye bhokisi rudzi rwefoaming process, uye inovandudza chimiro chefuro uye inovandudza kuumbwa kwemhando.Huwandu hweyero yayo pachayo hwakapamhama, uye shanduko yedosi haina mhedzisiro iri pachena panguva yekuchena;Asi kuwedzera dosi kunogona kupfupisa nguva yekukwira kwefuro uye kupfupisa nguva yekurapa.