Pofufuza mitundu yosiyanasiyana ya mawilo a urethane, tiyenera kutchula makhalidwe awo apadera komanso momwe amagwiritsidwira ntchito. Polyurethane ndi chinthu chogwira ntchito bwino kwambiri. Ndi mphamvu zake zakuthupi komanso zamakemikolo. Ili ndi malo ofunikira kwambiri pakupanga mawilo.
Choyamba. Tiyeni tiwone mawilo a polyurethane (TPU). Mawilo awa ali ndi polypropylene kapena nayiloni. Kudzera muukadaulo wachiwiri wopangira jekeseni, pamwamba pa gudumu la polyurethane A limapangidwa m'mphepete mwakunja kwa pakati. Mawilo a TPU sikuti amangoteteza pansi, amayamwa kugwedezeka, salemba chizindikiro komanso sapaka utoto. Alinso ndi kukana kwabwino kukangana ndi dzimbiri. Amatha kugwedezeka mosavuta pamalo osiyanasiyana. Kuphatikiza apo. Mtundu wake ukhoza kusinthidwa malinga ndi kufunikira. Amasinthasintha malinga ndi zosowa za nthawi zosiyanasiyana. Komabe. Ndikofunikira kudziwa kuti pamalo otentha. Mphamvu yonyamula katundu wa gudumu la TPU idzachepetsedwa.
Gawo lotsatira ndikutsanulira gudumu la polyurethane (CPU) elastomer. Magudumu awa ali ndi chitsulo kapena aluminiyamu ngati core. Ma polyurethane elastomer opangidwa ndi thermosetting opangidwa ndi chemical reaction. Amapanga pamwamba pa gudumu atakhazikika kutentha kwambiri. Magudumu a CPU ali ndi ubwino womwewo woteteza pansi, kusalemba komanso kusapaka utoto. Komanso ndi yolimba komanso yolimba, zomwe zimapangitsa kuti ikhale yoyenera kugwiritsa ntchito yomwe imafuna chitonthozo chapamwamba. Komabe. Siimalimbana ndi madzi otentha, nthunzi yamadzi, ndi zina zotero… Chifukwa chake muyenera kusamala mukamagwiritsa ntchito m'malo enaake.
Tiyeni tikambirane za gudumu lina la polyurethane (CPU). Magudumuwa amachokeranso ku ma elastomer a polyurethane opangidwa ndi thermoset. Ali ndi ubwino wofanana ndi wa gudumu la CPU lomwe lafotokozedwa pamwambapa, mwachitsanzo kuteteza pansi, kukana kukangana, ndi zina zotero. Chofunika kwambiri. Lili ndi kusintha kochepa kwambiri kosatha, kukana kugwedezeka kochepa. Limatha kupirira katundu wosinthasintha pa liwiro lalikulu. Ndi labwino kugwiritsa ntchito pa liwiro lalikulu.
Pomaliza. Tiyeni tiwone gudumu la polyurethane (PUE) lopangidwa ndi thovu. Ndi kapangidwe kake kapadera ka microporous, gudumuli likuwonetsa zinthu monga kuchepa kwa thupi, kulemera kopepuka komanso kusinthasintha kosavuta. Lilinso ndi zinthu zosiyanasiyana zabwino monga kunyamula katundu wambiri, kusinthasintha kwakukulu komanso kukana kupindika. Zinthu izi za magudumu a PUE zimawapangitsa kukhala chisankho chabwino kwambiri cha zinthu zopangira ma casters. Kaya ndi zomveka bwino komanso mphamvu kapena kugwedezeka kwa kugwedezeka ndi kupondereza. Zonsezi zimatha kuwonetsa zabwino zake zapadera.
Ponseponse. Mawilo a polyurethane, omwe ali ndi magwiridwe antchito abwino komanso mitundu yosiyanasiyana ya mawilo, amagwiritsidwa ntchito kwambiri m'magawo osiyanasiyana. Kuyambira mawilo a TPU omwe amateteza nthaka ndikuyamwa kugwedezeka, mpaka kukana kwa UV ndi kukangana kwa gudumu la CPU. Kuwonjezera pa kulemera kochepa komanso kulemera kopepuka kwa gudumu la PUE. Mtundu uliwonse wa gudumu la polyurethane umagwira ntchito yofunika kwambiri pamunda wake. Kusankha gudumu la urethane loyenera zosowa zanu. Sikuti limawonjezera magwiridwe antchito okha. Limaperekanso chidziwitso chomasuka komanso chotetezeka.
Nthawi yotumizira: Marichi-06-2025