3,3′,4,4′-Biphenyltetracarboxylic dianhydride CAS: 2420-87-3 3

Kagwiritsidwe Ntchito

3,3', 4,4'-Biphenyltetracarboxylic dianhydride (BPDA)ndi gawo lofunika kwambiri pakupanga zinthu zachilengedwe ndipo lili ndi ntchito zosiyanasiyana:

Kupanga kwa Polyimide

• Makanema Ogwira Ntchito Kwambiri: Amatha kusinthidwa ndi polycondensation reaction ndi diamine compounds kuti apange makanema a polyimide. Makanema awa ali ndi kukana kutentha kwambiri. Ngakhale pamalo otentha kwambiri opitilira 200 °C, amathabe kusunga mawonekedwe abwino amakina komanso kutchinjiriza magetsi. Chifukwa chake, nthawi zambiri amagwiritsidwa ntchito m'munda wamlengalenga kuteteza kutchinjiriza kwa ma mota ndi zida zamagetsi kapena ngati maziko a ma board osindikizidwa osinthika.
• Mapulasitiki aukadaulo: Mapulasitiki aukadaulo a polyimide opangidwa ndi makina ali ndi mphamvu zambiri, kulimba bwino, komanso satha kutha. Amatha kupangidwa ndi jakisoni kuti apange zida zina zolondola zomwe zimakhala ndi zofunikira kwambiri pamakina, monga mabulaketi ang'onoang'ono ozungulira injini za ndege ndi zida zotumizira mkati mwa mawotchi apamwamba amakina.
• Malo Ophikira: Zophimba za polyimide zopangidwa pogwiritsa ntchito BPDA zimakhala ndi kukana dzimbiri kwa mankhwala. Zikagwiritsidwa ntchito m'makoma amkati mwa matanki osungiramo mankhwala ndi ma reactor, zimatha kukana kuwonongeka kwa ma acid osiyanasiyana, maziko, ndi zosungunulira zachilengedwe kwa nthawi yayitali, zomwe zimaonetsetsa kuti zidazo zikugwira ntchito nthawi yayitali. Nthawi yomweyo, zimakhalanso ndi kukana kutentha bwino. Zikapakidwa pa mapaipi otulutsa utsi otentha kwambiri ndi ma casing a injini, sizingachotsedwe mosavuta chifukwa cha kutentha kwambiri.
• Zipangizo za ulusi: Zimagwiritsidwa ntchito popanga ulusi wochita bwino kwambiri. Ulusi wa polyimide wopangidwa uli ndi mphamvu zambiri, modulus yapamwamba, komanso kukhazikika kwabwino kwa kutentha. Nthawi zambiri amagwiritsidwa ntchito popanga zovala zosagwira moto, zingwe zapadera zoyendera ndege, ndi zina zotero, zomwe zimapereka chitetezo chodalirika kwa ogwira ntchito ndi zida pazochitika zotentha kwambiri komanso zoopsa.

Kulongedza ndi Kutumiza

20KG/Drum kapena malinga ndi zomwe makasitomala amafuna.
Ndi katundu wamba ndipo amatha kutumizidwa kudzera m'nyanja ndi mlengalenga

Sungani ndi kusunga

Nthawi yosungiramo zinthu: Miyezi 24 kuyambira tsiku lopangidwa m'maphukusi oyambirira osatsegulidwa, osungidwa pamalo ozizira komanso ouma, kutali ndi dzuwa, madzi.
Nyumba yosungiramo zinthu zopumira mpweya, Youma pang'ono, Yosiyana ndi ma oxidants, ma acid.