Nitrile mphira amapangidwa ndi emulsion polymerization wa butadiene ndi acrylonitrile.Nitrile mphira makamaka opangidwa ndi otsika kutentha emulsion polymerization.Ili ndi kukana kwambiri kwamafuta, kukana kwambiri kuvala, kukana kutentha kwabwino komanso kumamatira mwamphamvu..Zoipa zake ndizosakanizidwa bwino ndi kutentha kwapansi, kukana kwa ozoni, kutsika kwa magetsi, komanso kutsika pang'ono.Labala ya nitrile imagwiritsidwa ntchito makamaka popanga zinthu za rabala zosagwira mafuta.1) Chiyambi Imatchedwanso NBR.Rabara yopangidwa ndi copolymerization ya butadiene ndi acrylonitrile.Ndi mphira wopangidwa ndi mafuta abwino (makamaka alkane mafuta) komanso kukana kukalamba.Pali mitundu isanu ya acrylonitrile (%) mu rabara ya nitrile: 42-46, 36-41, 31-35, 25-30, ndi 18-24.Kuchuluka kwa acrylonitrile, kumakhala bwino kukana kwa mafuta, koma kukana kuzizira kumachepa moyenerera.Itha kugwiritsidwa ntchito kwa nthawi yayitali mumlengalenga pa 120 ° C kapena mumafuta pa 150 ° C.Kuphatikiza apo, ilinso ndi kukana madzi abwino, kulimba kwa mpweya komanso magwiridwe antchito abwino kwambiri.Amagwiritsidwa ntchito kwambiri popanga zinthu zosiyanasiyana za rabara zosagwira mafuta, ma gaskets osiyanasiyana osamva mafuta, ma gaskets, manja, ma CD osinthika, ma hoses ofewa, kusindikiza ndi utoto wa rabara, zida za mphira, ndi zina zambiri, ndipo zimakhala zofunika kwambiri m'mafakitale monga magalimoto. , ndege, petroleum, ndi kukopera zotanuka zinthu.
1. Raba ya Nitrile imatchedwanso mphira wa butadiene-acrylonitrile, wotchedwa NBR, wokhala ndi kulemera kwa pafupifupi 700,000.Zoyera zoyera mpaka zowala zachikasu zazikulu kapena zolimba, zolimba zachibale 0.95-1.0.Labala ya Nitrile imakhala ndi kukana kwamafuta abwino kwambiri, yachiwiri ndi rabala ya polysulfide ndi rabala ya fluorine, ndipo imakhala ndi kukana kwamphamvu kwambiri komanso kulimba kwa mpweya.Kuipa kwa mphira wa nitrile ndikuti sikugonjetsedwa ndi ozoni ndi zonunkhira, ma halogenated hydrocarbons, ketoni ndi zosungunulira za ester, kotero sikoyenera zipangizo zotetezera.Kukana kutentha kuli bwino kuposa mphira wa styrene-butadiene ndi neoprene, ndipo imatha kugwira ntchito pa 120 ° C kwa nthawi yaitali.Kuthina kwa mpweya ndi kwachiwiri kwa rabara ya butyl.Kuchita kwa mphira wa nitrile kumakhudzidwa ndi zomwe zili mu acrylonitrile.Pamene zomwe zili mu acrylonitrile zikuwonjezeka, mphamvu zowonongeka, kukana kutentha, kukana mafuta, kutsekemera kwa mpweya ndi kuuma kumawonjezeka, koma kusungunuka ndi kuzizira kumachepa.Rabara ya Nitrile ili ndi kukana kwa ozoni komanso mphamvu zamagetsi zamagetsi, koma kukana madzi abwino.
2 Main ntchito mphira wa Nitrile makamaka amagwiritsidwa ntchito popanga zinthu zosagwira mafuta, monga mapaipi osamva mafuta, matepi, ma diaphragms a rabara ndi matumba akulu amafuta, ndi zina zambiri. Nthawi zambiri amagwiritsidwa ntchito popanga zinthu zosiyanasiyana zosamva mafuta, monga O- mphete, zisindikizo zamafuta, makapu achikopa, ma diaphragms, ma valve, mvuvu, payipi ya rabara, zisindikizo, thovu, ndi zina zotero, amagwiritsidwanso ntchito popanga mapepala a rabala ndi ziwalo zosavala.
Malangizo a 3 pakuwongolera magwiridwe antchito a mphira wa nitrile Kukana Mafuta: Powonjezera zomwe zili mu acrylonitrile, kukana kwake kwamafuta kumatha kuwongolera, koma kukana kuzizira kumachepa moyenerera.Itha kugwiritsidwa ntchito kwa nthawi yayitali mumlengalenga pa 120 ° C kapena mumafuta pa 150 ° C.Kuphatikiza apo, ilinso ndi kukana madzi abwino, kulimba kwa mpweya komanso magwiridwe antchito abwino kwambiri.Amagwiritsidwa ntchito kwambiri popanga zinthu zosiyanasiyana za rabara zosagwira mafuta, ma gaskets osiyanasiyana osamva mafuta, ma gaskets, manja, ma CD osinthika, ma hoses ofewa, kusindikiza ndi utoto wa rabara, zida za mphira, ndi zina zambiri, ndipo zimakhala zofunika kwambiri m'mafakitale monga magalimoto. , ndege, petroleum, ndi kukopera zotanuka zinthu.Kukhazikika kwa kuzizira komanso kutsika kwa kutentha: Labala ya Nitrile imakhala ndi kuzizira kozizira, ndipo kuzizira kwake kumakhala koipitsitsa ndi kuchuluka kwa acrylonitrile.Pogwiritsa ntchito mphira wa nitrile wokhala ndi zinthu zosiyanasiyana za acrylonitrile ndikusintha kuphatikiza kwa mankhwala osiyanasiyana oletsa kukalamba, othandizira othandizira ndi mapulasitiki, mawonekedwe a rabara a nitrile osazizira omwe ali ndi kukana mafuta abwino komanso kukana kutopa angapezeke.
Nthawi yotumiza: Jun-16-2023