Thovu la polyurethane limagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana chifukwa cha kusinthasintha kwake, mphamvu zake zotetezera kutentha komanso mawonekedwe ake. Makhalidwe a thovu amatha kusiyana kwambiri kutengera kapangidwe ka maselo awo, omwe amatha kugawidwa m'ma thovu otseguka kapena thovu lotsekedwa. Kusankha ma catalyst omwe amagwiritsidwa ntchito popanga thovu la polyurethane kumachita gawo lofunikira pakuzindikira mawonekedwe a thovu, kuphatikiza kuchuluka kwake, kusinthasintha kwake, ndi fungo lake. M'nkhaniyi, tifufuza kusiyana pakati pa thovu lotseguka ndi lotsekedwa ndikuwona momwe ma catalyst apadera a polyurethane monga MXC-T ndi MXC-37 angagwiritsidwire ntchito popanga.
Kumvetsetsa Ma Foam Otseguka ndi Ma Cell Otsekedwa
Thovu Lotseguka
Thovu lotseguka limadziwika ndi maselo a thovu olumikizana kuti apange mawonekedwe ngati siponji. Thovu ili nthawi zambiri limakhala lopepuka, losinthasintha, komanso lokhala ndi mabowo ambiri, zomwe zimapangitsa kuti mawu azigwira bwino komanso kuti mawu azigwira bwino. Thovu lotseguka limagwiritsidwa ntchito kwambiri pazinthu zomwe zimafuna kutetezedwa, monga mipando, mipando yamagalimoto, ndi kutetezedwa kwa mawu. Makhalidwe ake akuluakulu ndi otsika, kusinthasintha kwakukulu, kugwira bwino ntchito kwa mawu ndi kutentha, komanso kulowa bwino kwa mpweya.
Thovu Lotsekedwa
Mosiyana ndi zimenezi, kapangidwe ka thovu lotsekedwa ndi kolimba komanso kotsekedwa, zomwe zimaletsa mpweya kapena madzi kutuluka. Thovulo ndi lolimba, lolimba komanso lotetezedwa bwino ku chinyezi. Thovu lotsekedwa ndi labwino kwambiri pa ntchito zomwe zimafuna kulimba komanso kukana madzi, monga kutetezera nyumba, thovu lopopera la nyumba zosagwiritsa ntchito mphamvu zambiri, ndi ma dashboard a magalimoto. Makhalidwe ake akuluakulu ndi kuchuluka kwamphamvu, kulimba kwambiri, mphamvu zabwino kwambiri zotetezera kutentha (kuteteza kutentha, kukana chinyezi), kukana madzi komanso kulimba.
Udindo wa Polyurethane Catalysts pakupanga thovu
Ma catalyst a polyurethane amagwira ntchito yofunika kwambiri popanga thovu mwa kuthandizira kusintha kwa mankhwala pakati pa ma polyol (nthawi zambiri ochokera ku zomera kapena mafuta) ndi ma isocyanates kuti apange ma polyurethane. Kutengera ndi momwe thovu limafunira, monga kuchulukana, kusinthasintha, ndi fungo, ma catalyst osiyanasiyana amagwiritsidwa ntchito.
Ma catalyst monga MXC-T ndi MXC-37 ali ndi ubwino wapadera pakupanga thovu la maselo otseguka komanso la maselo otsekedwa. Tiyeni tiwone bwino madera ogwiritsira ntchito ndi ubwino wa ma catalyst awiriwa.
MXC-T (CAS 2212-32-0)mu Kupanga Thovu
MXC-T, yomwe imadziwikanso kuti TMAEA, ndi chida chothandiza kwambiri chopangira amine chomwe sichimatulutsa mpweya woipa chomwe chimapereka njira yosalala yochitira zinthu ndipo ndi njira yabwino kwambiri yopangira mitundu yosiyanasiyana ya thovu la polyurethane. Njira yosalala yochitira zinthu imalola kuti thovu lizikula bwino, zomwe ndizofunikira kuti thovu likhale labwino komanso lizigwira ntchito bwino.
Kugwiritsa Ntchito mu Foam Yotseguka ndi Yotsekedwa
MXC-T imagwira ntchito bwino kwambiri pa ntchito zomwe zimafuna fungo lochepa komanso mphamvu yothandiza yothandiza. Ntchito yake yothandiza imalimbikitsa kuchitapo kanthu pakati pa urea (water-isocyanate), yomwe imakonda kuchitapo kanthu ndi polymer matrix chifukwa cha gulu lake la hydroxyl. Ichi ndichifukwa chake MXC-T imagwiritsidwa ntchito kwambiri mu:
- Kupopera Thovu Lopopera: MXC-T imaonetsetsa kuti thovu loteteza kutentha lili ndi kapangidwe kogwirizana komanso fungo lochepa, zomwe zimapangitsa kuti likhale labwino kwambiri pogwiritsira ntchito zotetezera kutentha m'nyumba ndi m'mabizinesi.
- Ma Dashboard a Magalimoto: Fungo lochepa komanso kusinthasintha kosalala kwa MXC-T kumapangitsa kuti ikhale chisankho chabwino kwambiri pakugwiritsa ntchito thovu la magalimoto, monga ma dashboard ndi zinthu zina zamkati.
MXC-37 (CAS 1704-62-7)mu Kupanga Thovu
MXC-37, kapena DMAEE, ndi chida china chothandizira amine chopanda utsi, chopanda fungo lochepa chomwe chimagwira ntchito kwambiri popanga thovu. Ndi choyenera kwambiri popanga ma foam a polyurethane (SPF) omwe amathiridwa ndi madzi (low-density, water-foamed porous spray polyurethane foams). Chothandizira ichi ndi chabwino kwambiri popanga thovu lomwe lili ndi ma polar kwambiri komanso lokhala ndi kapangidwe ka maselo ofanana, zomwe zimapangitsa kuti likhale lothandiza pa ntchito zosiyanasiyana pamene makhalidwe otere amafunika.
Kugwiritsa Ntchito mu Foam Yotseguka ndi Yotsekedwa
MXC-37 imadziwika chifukwa cha kuthekera kwake kuchepetsa fungo la amine lomwe limapezeka mu thovu la polyurethane, zomwe zimapangitsa kuti ikhale yosankha kwambiri m'malo ovuta monga:
- Thovu Lopopera Lochepa (SPF): MXC-37 imagwiritsidwa ntchito kwambiri popopera thovu lochepa mphamvu komwe madzi amakhala ambiri, ndipo fungo lochepa ndilofunika. Izi zikuphatikizapo kugwiritsa ntchito poteteza kutentha, denga, ndi makoma.
- Thovu la Microcellular: MXC-37 ingagwiritsidwe ntchito popanga thovu la microcellular, lomwe nthawi zambiri limagwiritsidwa ntchito popaka, zida zamagalimoto ndi ntchito zina zomwe zimafuna thovu lopepuka komanso losinthasintha, komanso thovu lofewa ndi ma elastomer komwe kusinthasintha ndi kulimba ndizofunikira kwambiri.
- Kuyika Thovu Lolimba: Mu ntchito zopaka, makamaka komwe kumafunika zinthu zopepuka komanso zotetezera kutentha, MXC-37 imagwira ntchito bwino poletsa kuchulukana kwa thovu ndikuwonjezera kapangidwe ka thovu.
MXC-37 ingagwiritsidwe ntchito ngati chothandizira chachikulu kapena ngati chothandizira, makamaka ikaphatikizidwa ndi zothandizila zina monga BDMAEE, kuti iwonjezere ubwino wa thovu ndikuchepetsa kufunikira kwa zothandizila zina zambiri.
Mapeto
Zothandizira za polyurethanemonga MXC-T ndi MXC-37 ndizofunikira popanga thovu lotseguka ndi lotsekedwa, zomwe zimathandiza opanga kukwaniritsa mawonekedwe a thovu omwe amafunidwa pomwe akuchepetsa zinthu zina zoopsa monga fungo ndi utsi. Mwa kusankha chothandizira choyenera cha mtundu winawake wa thovu, opanga amatha kukonza magwiridwe antchito ndi kukhazikika kwa zinthu zawo.
Nthawi yotumizira: Disembala-10-2024