Pyromellitic Dianhydride Ndi CAS 89-32-7

CAS:89-32-7

MF:C10H2O6

MW:218.12

EINECS No:201-898-9

Mawu ofanana ndi mawu:1,2,4,5-Benzenetetracarboxylic1,2:4,5-dianhydride; 1,2,4,5benzenetetracarboxylic1,2:4,5dianhydride; 1,2,4,5-benzenetetracarboxylic1,2:4,5-dianhydride; 1,2,4,5-Benzenetetracrboxylicdianhydride; pyromelliticacidanhydride; pyromelliticaciddianhydride; Pyromelliticanhydride; 1,2,4,5-BENZENETETRACARBOXYLICANHYDRIDE

Siyani Uthenga Wanu

Tsatanetsatane wa Zamalonda

Tsitsani

Zogulitsa Tags

Kodi Pyromellitic Dianhydride Ndi CAS 89-32-7 ndi chiyani?

The pyromellitic dianhydride (chidule cha PMDA), chomwe chimagwiritsidwa ntchito makamaka popanga polyimide, chifukwa polyimide imakhala ndi kukana kwambiri kutentha kwambiri, asidi ndi alkali kukana, zabwino kwambiri Chifukwa cha makina ake, mphamvu zamagetsi ndi kukhazikika kwake, imagwiritsidwa ntchito kwambiri m'magawo apamwamba kwambiri monga ndege, zinthu zamagetsi, zomwe zili ndi mphamvu zamagetsi, zomwe zili ndi mphamvu zamagetsi.

Kufotokozera

Kanthu	Standard
Maonekedwe	Makristalo oyera
Mmalo okwera	286 ℃-288 ℃
Kupambana kwa asidi wopanda	≤0.5wt%
KUYERA (%)	≥99.5%

Kugwiritsa ntchito

Pyromellitic dianhydride (PMDA) ndizofunikira kwambiri pamakampani opanga ma organic synthesis, komanso zopangira zopangira zida zatsopano zamakina ndi mankhwala owonjezera amtengo wapatali. Amagwiritsidwa ntchito kwambiri popanga polyimide monomers, ndipo amathanso kugwiritsidwa ntchito ngati Chithandizo cha epoxy resin ndi cholumikizira cholumikizira cha polyester resin, chomwe chimagwiritsidwa ntchito popanga utoto wa buluu wa phthalocyanine ndi zotumphukira zina zofunika, ndi zina zambiri. Pyromellitic dianhydride, yomwe imadziwikanso kuti homoanhydride, ili ndi mawonekedwe apadera a maselo ndipo ingagwiritsidwe ntchito popanga zipangizo zowonongeka ndi kutentha, kutsekemera kwa magetsi ndi kukana kwa mankhwala, zomwe zimagwiritsidwa ntchito kwambiri ngati monolayer wa polyimide. Amapangidwa ndi diamine onunkhira kuti apeze pulasitiki ya polyimide, koma chiyero cha pyromellitic dianhydride ndichokwera kwambiri, chomwe chiyenera kukhala choposa 99%.