Ka helu helu: 89-32-7 PMDA Pyromellitic dianhydride
Hoʻolauna pōkole
ʻO ka Pyromellitic dianhydride (PMDA), nā huahana maʻemaʻe he keʻokeʻo a ʻulaʻula melemele paha.ʻO kaʻikeʻana i ka ea maʻemaʻe e hoʻopili koke i ka wai mai ka lewa a hydrolyzed i loko o ka Pyromellitic Acid. Dissolved i ka dimethyl sulfoxide, dimethylformamide, acetone a me nā mea hoʻohenehene'ē aʻe, hikiʻole ke hoʻoheheʻe i ka etera, chloroforma me benzene.Hoʻohana nui ʻia e like me ka mea maka no ka polyimide, a me ka crosslinking agent no ka hana ʻana i ka epoxy curing agent and the polyester resin extinction.
ʻO ka Pyromellitic acid (PMA), i ʻike ʻia ʻo 1,2,4,5-benzenetetracarboxylicacid, keʻokeʻo a i ka melemele ʻulaʻula pauka, hoʻohana nui ʻia i ka synthesis o polyimide, octyl pyromelliate, a me nā mea ʻē aʻe. .
MEA | PMDA | PMA |
Maemae wt% | 99.5% | 99% |
Koe Acetone PPM | 1500 | / |
Lae hehee | 284~288 | / |
kalakala | Keʻokeʻo a melemele | Keʻokeʻo |
ʻAkaʻuma manuahi wt% | 0.5 | / |
Nui ʻāpana | Ma ke koi o ka mea kūʻai aku | Ma ke koi o ka mea kūʻai aku |
Pls e kelepona mai iā mākou e kiʻi iā COA a me MSDS.Mahalo.