Kugwiritsa Ntchito Polyurethane Catalysts mu Polyurethane Elastomers

Ma elastomer a polyurethane ndi zinthu zosiyanasiyana zomwe zimawonetsa mphamvu zabwino kwambiri zamakanika monga kusinthasintha kwakukulu, kukana kuwonongeka komanso kulimba. Izi zimapangitsa kuti zikhale zoyenera kugwiritsidwa ntchito m'mafakitale osiyanasiyana, kuphatikizapo zida zamagalimoto, nsapato, zomatira ndi zokutira. Kupanga ma elastomer a polyurethane kumafuna kuwongolera bwino momwe mankhwala amagwirira ntchito, makamaka popanga mgwirizano wa urethane pakati pa polyol ndi isocyanate. Ma catalyst a polyurethane amachita gawo lofunikira pano.

Zothandizira za polyurethaneamatha kuwongolera liwiro ndi magwiridwe antchito a polyurethane reaction. Amakhudza bwino momwe gelation (polyol-isocyanate) imagwirira ntchito ndi thovu (water-isocyanate), zomwe zimatsimikiza mwachindunji mawonekedwe omaliza a elastomer. Mwa kusankha chothandizira choyenera, opanga amatha kukonza bwino momwe zinthu zimagwirira ntchito ndikusintha mawonekedwe enieni a elastomer kuti akwaniritse zofunikira zinazake zogwiritsidwa ntchito.

Chinthu chimodzi chofunikira chomwe chimagwiritsidwa ntchito popanga ma elastomer a polyurethane ndi MXC-37, yomwe imadziwikanso kuti dimethylethanolamine ether (DMAEE).MXC-37 ndi chothandizira cha amine chotulutsa mpweya wochepa komanso chopanda fungo labwino chomwe chimagwiritsidwa ntchito kwambiri m'magwiritsidwe ntchito omwe amafunikira mpweya wochepa wa amine komanso magwiridwe antchito apamwamba. Kapangidwe kake kapadera ka MXC-37 kamawapangitsa kukhala koyenera kwambiri pa thovu lofewa lokhazikika la ester, thovu la microcellular, elastomers, reaction injection molding (RIM) ndi ma packaging a thovu lolimba.

MXC-37mu Polyurethane Elastomers

MXC-37imapereka maubwino angapo popanga ma elastomer a polyurethane. Ndi chothandizira kwambiri chomwe chimathandizira njira yopangira thovu ndipo chimagwiritsidwa ntchito bwino popanga thovu lokhala ndi madzi ambiri. Ntchito yake yopangira thovu lochuluka imalimbikitsa kupanga thovu bwino komanso kapangidwe ka maselo ofanana, zomwe ndizofunikira kwambiri pakugwiritsa ntchito monga ma thovu a microcellular ndi ma elastomer.

Mu ntchito za elastomer, MXC-37 imatsimikizira kuti elastomer imachira mwachangu komanso mofanana, zomwe zimapangitsa kuti elastomer ikhale ndi mphamvu yolimba komanso kusinthasintha. Izi zimapangitsa kuti ikhale chisankho chodziwika bwino popanga zinthu zolimba za elastomer zomwe zimafuna kusinthasintha kwakukulu, monga zisindikizo, ma gasket ndi zida zamagalimoto.

Kuphatikiza apo, fungo lochepa komanso mphamvu zotulutsa mpweya za MXC-37 ndizonso zabwino kwambiri, makamaka pakugwiritsa ntchito fungo losasangalatsa. Fungo la amine lomwe nthawi zambiri limagwirizanitsidwa ndi ma catalyst a polyurethane limachepetsedwa mukamagwiritsa ntchito MXC-37, zomwe zimapangitsa kuti ikhale yoyenera pazinthu zomwe zimakumana mwachindunji ndi ogula, monga nsapato ndi zinthu zotetezera.

Mapulogalamu Osiyanasiyana

Kusinthasintha kwa MXC-37 sikungokhala pa ma elastomer okha, komanso kumafikiranso ku machitidwe ena a thovu la polyurethane. Mu ntchito za thovu la microcellular, zimathandiza kupanga thovu lokhala ndi ma pores abwino komanso ofanana, zomwe zimawonjezera kuyamwa kwa zinthuzo komanso mphamvu zotetezera. Mu reaction injection molding (RIM), MXC-37 imathandiza kuumba mwachangu zigawo zovuta, kuwonjezera zokolola, ndikupanga zigawo zopepuka, zogwira ntchito bwino kwambiri zamagalimoto ndi mafakitale.

Kuphatikiza apo, MXC-37 ingagwiritsidwe ntchito poika thovu lolimba, komwe ntchito yake yotulutsa thovu kwambiri imatsimikizira kuti imateteza bwino komanso imateteza bwino. Fungo lochepa la chothandizirachi silitulutsa fungo loipa komanso silimatulutsa mpweya woipa, limathandizanso kugwiritsa ntchito izi, kuchepetsa kuwonongeka kwa chilengedwe komanso kukonza malo ogwirira ntchito.

Mapeto

Pomaliza, zinthu zoyambitsa polyurethane mongaMXC-37 (DMAEE)Ndi zinthu zofunika kwambiri popanga ma elastomer a polyurethane ndi machitidwe ena a thovu. Kutha kwawo kuwongolera kuchuluka kwa zochita, kukonza mtundu wa thovu, ndikuchepetsa kutulutsa fungo kumawapangitsa kukhala ofunikira kwambiri m'mafakitale osiyanasiyana. MXC-37, yokhala ndi ntchito zambiri zotulutsa thovu komanso mphamvu zochepa zotulutsa mpweya, imapatsa opanga njira yodalirika yopangira zinthu za polyurethane zogwira ntchito bwino, kuyambira ma elastomer mpaka ma thovu ang'onoang'ono komanso ma phukusi olimba a thovu.