Pyromellitic Dianhydride na CAS 89-32-7

CAS:89-32-7

MF:C10H2O6

MW:218.12

EINECS Mba:201-898-9

Ụdị okwu: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; pyromelliticacidhydride; pyromelliticiddianhydride; pyromelliticanhydride; 1,2,4,5-BENZENETETRACARBOXYLICANHYDRIDE

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Nkọwa ngwaahịa

Budata

Mkpado ngwaahịa

Kedu ihe bụ Pyromellitic Dianhydride na CAS 89-32-7?

pyromellitic dianhydride (nke a na-akpọ PMDA), bụ nke a na-ejikarị eme ihe maka njikọ nke polyimide, n'ihi na polyimide nwere ezigbo nguzogide okpomọkụ dị elu, acid na alkali resistance, magburu onwe ya N'ihi ihe eji arụ ọrụ ya, ihe eletriki na nkwụsi ike akụkụ, a na-ejikarị ya na mpaghara teknụzụ dị elu dị ka ụgbọ elu, ikuku ikuku, microelectronics, nke nwere ikike siri ike na ihe atomiki chọrọ.

Nkọwapụta

Ihe	Ọkọlọtọ
Ọdịdị	Kristal ọcha
Melting point	286 ℃-288 ℃
Asọmpi acid efu	≤0.5wt%
Ọcha(%)	≥99.5%

Ngwa

Pyromellitic dianhydride (PMDA) bụ ihe dị mkpa akụrụngwa na organic njikọ ụlọ ọrụ, nakwa dị ka ihe bụ isi akụrụngwa maka mmepe nke ọhụrụ kemịkal ngwaahịa na elu-uru-kwukwara mma kemịkal ngwaahịa. A na-ejikarị ya eme ihe maka mmepụta nke polyimide monomers, a pụkwara iji ya mee ihe dị ka onye na-agwọ ọrịa maka resin epoxy na onye na-ejikọta ya na polyester resin, nke a na-eji na-emepụta ihe na-acha anụnụ anụnụ phthalocyanine na ụfọdụ ihe ndị dị mkpa, wdg, ma nwee ọtụtụ ihe eji eme ihe. Pyromellitic dianhydride, nke a makwaara dị ka homoanhydride, nwere usoro ihe omimi pụrụ iche ma nwee ike iji ya mee ihe na-emepụta ihe na-eguzogide okpomọkụ, mkpuchi eletriki na nguzogide kemịkalụ, n'ime ihe kachasị mkpa bụ monolayer nke polyimide. A na-ejikọta ya na diamine aromatic iji nweta plastik polyimide, ma ịdị ọcha nke pyromellitic dianhydride dị oke elu, nke kwesịrị ịdị karịa 99%.