Pyromellitic Dianhydride Ka CAS 89-32-7

CAS:89-32-7

MF:C10H2O6

MW:218.12

Nomoro ea EINECS:201-898-9

Mantsoe a tšoanang: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

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Pyromellitic Dianhydride Ka CAS 89-32-7 ke Eng?

The pyromellitic dianhydride (e khutsufalitsoeng e le PMDA), e sebelisoang haholo-holo bakeng sa ho qaptjoa ha polyimide, hobane polyimide e na le mocheso o phahameng ka ho fetisisa oa mocheso, acid le alkali resistance, e babatsehang Ka lebaka la thepa ea eona ea mechine, thepa ea motlakase le botsitso ba dimensional, e sebelisoa haholo libakeng tsa theknoloji e phahameng tse kang lifofane, lisebelisoa tsa aerospace le microelectronic.

Tlhaloso

Ntho	Standard
Ponahalo	Likristale tse tšoeu
Mntlha e phahameng	286 ℃-288 ℃
Phehisano ea mahala ea acid	≤0.5wt%
PURITY(%)	≥99.5%

Kopo

Pyromellitic dianhydride (PMDA) ke thepa e tala ea bohlokoa indastering ea organic synthesis, hammoho le lisebelisoa tse tala tsa motheo bakeng sa nts'etsopele ea lisebelisoa tse ncha tsa lik'hemik'hale le lihlahisoa tse phahameng tsa boleng ba lik'hemik'hale tse ntle. E sebelisoa haholo-holo bakeng sa tlhahiso ea polyimide monomers, 'me e ka boela ea sebelisoa e le Pheko bakeng sa epoxy resin le cross-linking agent bakeng sa resin ea polyester, e sebelisoang ha ho etsoa dae e putsoa ea phthalocyanine le tse ling tsa bohlokoa tse nkiloeng, joalo-joalo,' me e na le mefuta e mengata ea tšebeliso. Pyromellitic dianhydride, eo hape e tsejoang e le homoanhydride, e na le mohaho o khethehileng oa limolek'hule 'me e ka sebelisoa ho etsa lisebelisoa tse nang le mocheso o thibelang mocheso, motlakase oa motlakase le lik'hemik'hale tsa lik'hemik'hale, tseo har'a tsona tšebeliso ea bohlokoa ka ho fetisisa e le monolayer ea polyimide. E entsoe ka diamine e nkhang hamonate ho fumana polasetiki ea polyimide, empa bohloeki ba pyromellitic dianhydride bo phahame haholo, bo hlokang ho feta 99%.