Rabara ya polyurethane, elastomer yosunthika yomwe imatsekereza kusiyana pakati pa mphira ndi pulasitiki, yakhala mwala wapangodya m'mafakitale osiyanasiyana chifukwa cha mawonekedwe ake apadera. Wodziwika chifukwa cha mphamvu zake zambiri, kulimba, komanso kukana kuvala, mphira wa polyurethane amagwiritsidwa ntchito kwambiri m'magawo monga magalimoto, zomangamanga, ndi kupanga. Kutha kwake kutengera ntchito zosiyanasiyana kumapangitsa kukhala chisankho chokondedwa kwa mainjiniya ambiri ndi opanga. Mwachitsanzo, kukana kwake kwakukulu kwa abrasion, komwe kumatha kuwirikiza ka 10 kuposa zida zina, kwapangitsa kuti ikhale yofunikira kwambiri m'malo opsinjika kwambiri. Kuti muwone momwe mphira wa polyurethane umagwiritsidwa ntchito komanso maubwino ake, mutha kulozera kuzidziwitso zatsatanetsatane zomwe zaperekedwa pamutuwu. Mpira wa Polyurethane.
Makhalidwe a Polyurethane Rubber
Kukhalitsa ndi Kuuma
Chimodzi mwazinthu zodziwika bwino za mphira wa polyurethane ndi kukhazikika kwake kodabwitsa. Imapereka milingo yosiyanasiyana yowuma, kuyambira pansi mpaka 20 Shore A mpaka pamwamba pa 80 Shore A, ndikupangitsa kuti ikhale yoyenera kugwiritsa ntchito zosiyanasiyana. Kusinthasintha uku mu kuuma kumatheka kudzera mumitundu yosiyanasiyana, kulola opanga kuti asinthe zinthuzo malinga ndi zosowa zenizeni. Mwachitsanzo, mapangidwe ofewa ndi abwino popangira ntchito, pomwe mitundu yolimba kwambiri imagwiritsidwa ntchito pama roller ndi zosindikizira zamakampani.
Abrasion Resistance
Rabara ya polyurethane imapambana pakukana abrasion, kupitilira zida zachikhalidwe zambiri. Kukana kwake kuvala ndi 5 mpaka 10 kuposa mphira wachilengedwe kapena mphira zina zopangira. Katunduyu amapangitsa kukhala chisankho chabwino kwambiri pazogwiritsa ntchito monga malamba otumizira, ma gaskets, ndi mawilo, komwe kumangokhalira kukangana ndi kuvala sikungapeweke.
Kuthamanga Kwambiri Kwambiri
Kulimba kwa mphira wa polyurethane kumatha kufika 600 kgf/cm², yomwe ndi yokwera kwambiri kuposa ma elastomer ena ambiri. Kulimba kwakukulu kumeneku kumatsimikizira kuti zinthuzo zimatha kupirira zolemetsa zolemetsa komanso zopsinjika popanda kupunduka kapena kusweka, ndikupangitsa kuti ikhale yoyenera kufunsira ntchito zamafakitale.
Elasticity ndi Low Residual Deformation
Rabara ya polyurethane imawoneka bwino kwambiri, yotalikirapo mpaka 600%. Ngakhale pansi pa kutalika kotereku, kusinthika kotsalirako kumakhala kochepa, nthawi zambiri kumayambira 2% mpaka 4%. Katunduyu ndi wofunikira pamapulogalamu omwe amafunikira kutambasulidwa mobwerezabwereza, monga zisindikizo ndi ma diaphragms.
Mafuta ndi Chemical Resistance
Ubwino winanso wofunikira wa rabara ya polyurethane ndikukana kwake kwamafuta ndi mankhwala. Imaposa mphira wa nitrile polimbana ndi mafuta amchere ndipo imakhala yothandiza nthawi 5 mpaka 6 kuposa mphira wachilengedwe. Izi zimapangitsa kukhala chinthu chokondedwa kuti chigwiritsidwe ntchito m'malo omwe ali ndi mafuta, mafuta, ndi mankhwala ena ovuta.
Kugwiritsa ntchito Polyurethane Rubber
Makampani Agalimoto
M'gawo lamagalimoto, mphira wa polyurethane amagwiritsidwa ntchito kwambiri popanga ziboda zoyimitsidwa, zisindikizo, ndi ma gaskets. Mphamvu yake yonyamula katundu wambiri komanso kukana kuvala kumapangitsa kuti ikhale yabwino kwa mapulogalamuwa. Kuonjezera apo, kuthekera kwake kupirira kutentha kwakukulu kumatsimikizira ntchito yodalirika m'madera otentha ndi ozizira.
Zomangamanga ndi Zomangamanga
Rabara ya polyurethane imagwiritsidwa ntchito kwambiri pomanga zinthu monga ma vibration dampers, pansi, ndi zokutira. Kukhazikika kwake ndi kukana kuphulika ndi mankhwala kumapangitsa kukhala chisankho chodalirika pazigawo zomangira zovuta. Komanso, kusinthasintha kwake kumapangitsa kuti izitha kugwedezeka komanso kugwedezeka bwino, kumapangitsa kuti mapangidwewo azikhala ndi moyo wautali.
