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 ọkụ eletrik na nkwụsi ike akụkụ, ọ bụ ebe niile. eji na teknụzụ dị elu dị ka ụgbọ elu, ikuku ikuku, microelectronics na ike atomiki, nke nwere ihe siri ike chọrọ na ihe onwunwe.
| Ihe | Ọkọlọtọ |
| Ọdịdị | Kristal ọcha |
| Melting point | 286 ℃-288 ℃ |
| Asọmpi acid efu | ≤0.5wt% |
| Ọcha(%) | ≥99.5% |
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 maka mmepụta nke polyimide monomers, a pụkwara iji ya dị ka onye na-agwọ ọrịa maka epoxy resin na cross-linking agent maka polyester resin, nke a na-eji na-emepụta ihe na-acha anụnụ anụnụ phthalocyanine na ụfọdụ ihe dị mkpa, wdg. a dịgasị iche iche nke ojiji. 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%.
25kgs / drum, 9ton / 20' akpa
25kgs / akpa, 20ton / 20' akpa
Pyromellitic Dianhydride na CAS 89-32-7
Pyromellitic Dianhydride na CAS 89-32-7
