I-Pyromellitic Dianhydride Nge-CAS 89-32-7

I-CAS:89-32-7

MF:I-C10H2O6

MW:218.12

Inombolo ye-EINECS:201-898-9

Omqondofana: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; i-pyromelliticacidanhydride; i-pyromelliticaciddianhydride; I-Pyromelliticanhydride; 1,2,4,5-BENZENETETRACARBOXYLICANHYDRIDE

Shiya Umlayezo Wakho

Imininingwane Yomkhiqizo

Landa

Omaka bomkhiqizo

Iyini i-Pyromellitic Dianhydride Nge-CAS 89-32-7?

I-pyromellitic dianhydride (efushanisiwe njenge-PMDA), esetshenziselwa ikakhulukazi ukuhlanganiswa kwe-polyimide, ngoba i-polyimide inokumelana nokushisa okuphezulu kakhulu, ukumelana ne-asidi ne-alkali, kuhle kakhulu Ngenxa yezakhiwo zayo zemishini, izakhiwo zikagesi nokuzinza kwe-dimensional, ibanzi kakhulu. esetshenziswa emikhakheni yobuchwepheshe obuphezulu njengendiza, i-aerospace, i-microelectronics namandla e-athomu, anezidingo eziqinile ezimpahleni ezibonakalayo.

Ukucaciswa

Into	Okujwayelekile
Ukubukeka	Amakristalu amhlophe
Miphuzu lokukhuphuka	286℃-288℃
Ukuncintisana kwe-asidi yamahhala	≤0.5wt%
INJONGO(%)	≥99.5%

Isicelo

I-Pyromellitic dianhydride (PMDA) iyimpahla eluhlaza ebalulekile embonini ye-organic synthesis, kanye nempahla eyisisekelo yokwakhiwa kwezinto ezintsha zamakhemikhali kanye nemikhiqizo yamakhemikhali emihle anenani eliphakeme. Isetshenziselwa ikakhulukazi ukukhiqizwa kwe-polyimide monomers, futhi ingasetshenziswa njenge-ejenti Yokwelapha ye-epoxy resin kanye ne-cross-linking ejenti ye-polyester resin, esetshenziswa ekwenzeni udayi oluhlaza we-phthalocyanine nokunye okuphuma okubalulekile, njll., anhlobonhlobo ukusetshenziswa. I-Pyromellitic dianhydride, eyaziwa nangokuthi i-homoanhydride, inesakhiwo esikhethekile samangqamuzana futhi ingasetshenziswa ukwenza izinto ezinokumelana nokushisa, ukufakwa kukagesi nokumelana namakhemikhali, phakathi kwazo okubaluleke kakhulu ukusetshenziswa njenge-monolayer ye-polyimide. Ihlanganiswe ne-diamine enephunga elimnandi ukuze kutholwe ipulasitiki ye-polyimide, kodwa ubumsulwa be-pyromellitic dianhydride buphezulu kakhulu, okumele bube ngaphezu kwama-99%.