Pyromellitic Dianhydride Nrog CAS 89-32-7

CAS:89-32-7

MF:C10H2O6

MW:218.12

EINECS No.:201-898-9

Cov lus txhais: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; pyromelliticacidianhydride; Pyromelliticanhydride; 1,2,4,5-BENZENETETRACARBOXYLICANHYDRIDE

Sau Koj Cov Lus

Cov Khoom Qhia Txog Khoom

Rub tawm

Cov Cim Npe Khoom

Pyromellitic Dianhydride Nrog CAS 89-32-7 yog dab tsi?

Lub pyromellitic dianhydride (luv ua PMDA), uas yog siv rau kev tsim cov polyimide, vim tias polyimide muaj kev tiv thaiv kub zoo heev, tiv thaiv kua qaub thiab alkali, zoo heev Vim nws cov khoom siv kho tshuab, hluav taws xob thiab kev ruaj khov, nws yog dav siv hauv cov teb thev naus laus zis siab xws li aviation, aerospace, microelectronics thiab atomic energy, uas muaj cov kev cai nruj ntawm cov khoom siv.

Cov Lus Qhia Tshwj Xeeb

Khoom	Tus Qauv
Qhov tsos	Cov siv lead ua dawb
Melting point	286 ℃ -288 ℃
Kev sib tw ua kua qaub dawb	≤0.5wt%
PURITY (%)	≥99.5%

Daim Ntawv Thov

Pyromellitic dianhydride (PMDA) yog ib qho khoom siv tseem ceeb hauv kev lag luam organic synthesis, nrog rau cov khoom siv tseem ceeb rau kev tsim cov khoom siv tshuaj tshiab thiab cov khoom siv tshuaj zoo uas muaj nqis ntxiv. Nws feem ntau yog siv rau kev tsim cov polyimide monomers, thiab kuj tseem siv tau ua tus neeg sawv cev rau epoxy resin thiab tus neeg sawv cev sib txuas rau polyester resin, siv rau hauv kev tsim cov xim xiav phthalocyanine thiab qee cov khoom siv tseem ceeb, thiab lwm yam, thiab muaj ntau yam kev siv. Pyromellitic dianhydride, tseem hu ua homoanhydride, muaj cov qauv molecular tshwj xeeb thiab tuaj yeem siv los tsim cov ntaub ntawv uas tiv taus cua sov, rwb thaiv tsev hluav taws xob thiab tshuaj lom neeg, ntawm cov kev siv tseem ceeb tshaj plaws yog ua ib txheej ntawm polyimide. Nws yog synthesized nrog aromatic diamine kom tau txais polyimide yas, tab sis qhov huv ntawm pyromellitic dianhydride yog siab heev, uas yuav tsum tau ntau dua 99%.