Ma panelo a masangweji akhala chinthu chofunikira kwambiri pakupanga zinthu zamakono, odziwika chifukwa cha luso lawo lophatikiza mphamvu, kutchinjiriza, komanso kusinthasintha. Ma panelo amenewa, omwe ali ndi gawo loteteza pakati pa zigawo ziwiri za zinthu zolimba, amagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana chifukwa cha kutchinjiriza kwawo kutentha komanso ubwino wake.
Chimodzi mwa zipangizo zodziwika bwino zopangira ma sandwich panels ndi polyurethane, yomwe imadziwika kuti ndi yotsika kwambiri kutentha, yomwe imapereka kutentha kwabwino kwambiri. Izi zimapangitsa kuti ma sandwich panels a polyurethane akhale othandiza kwambiri pakugwiritsa ntchito mphamvu moyenera. Mwachitsanzo, pakukonzanso nyumba, ma sandwich amenewa nthawi zambiri amagwiritsidwa ntchito popangira denga ndi makoma akunja, zomwe zimathandiza kuti kutentha kwa mkati kukhale kokhazikika komanso kuchepetsa kugwiritsa ntchito mphamvu.
M'mafakitale, ma sandwich panels nthawi zambiri amagwiritsidwa ntchito pomanga mafakitale, malo osungiramo zinthu, ndi malo osungiramo zinthu zozizira. Makhalidwe a ma sandwich panels amathandiza kusunga malo olamulidwa, kaya kuteteza kutentha kapena kuonetsetsa kuti mpweya wozizira umakhalabe mkati. Izi zimapangitsa kuti zikhale zofunika kwambiri m'mafakitale monga kukonza chakudya ndi mankhwala, komwe kulamulira kutentha n'kofunika kwambiri.
Kugwiritsa ntchito mapanelo a sandwich kumawonjezera kukana kutentha kokha. Amaperekanso kukana moto, kukana phokoso, komanso kulimba, zomwe zimapangitsa kuti akhale oyenera kugwiritsidwa ntchito m'njira zosiyanasiyana, kuphatikizapo nyumba zamaofesi, m'masitolo akuluakulu, komanso m'nyumba zogona. Kupepuka kwa mapanelo amenewa kumathandizanso kuti azigwiritsidwa ntchito mosavuta komanso kuziyika, zomwe zimachepetsa nthawi yomanga komanso ndalama zogwirira ntchito.
Monga wogulitsazinthu zoyambitsa polyurethane, timapereka zinthu monga MXC-T,MXC-C15, ndi MXC-37, zomwe zapangidwira makamaka kupanga ma sandwich panels. Ma catalyst awa amachita gawo lofunikira kwambiri pakupanga, kuonetsetsa kuti thovu lomwe limagwiritsidwa ntchito m'ma board likukwaniritsa zomwe mukufuna, monga kapangidwe ka maselo ofanana, kuchulukana kwabwino, komanso magwiridwe antchito apamwamba a kutentha.
Opanga mapanelo a sandwich ali olandiridwa kuti adzafunse za mitundu yosiyanasiyana ya ma catalyst omwe tili nawo. Pogwiritsa ntchito ma catalyst athu apamwamba, mutha kupititsa patsogolo magwiridwe antchito a mapanelo anu a sandwich, ndikuwonetsetsa kuti akukwaniritsa miyezo yapamwamba kwambiri ya magwiridwe antchito komanso kulimba. Katswiri wathu mu chemistry ya polyurethane amatithandiza kupereka mayankho ogwirizana ndi zosowa zanu, kukuthandizani kupereka zinthu zapamwamba pamsika.
Nthawi yotumizira: Ogasiti-21-2024