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 ka ʻike ʻana i ka ea maʻemaʻe e hoʻopaʻa koke i ka ʻū mai ka lewa a hoʻoheheʻe ʻia i loko o ka Pyromellitic Acid. Dissolved i ka dimethyl sulfoxide, dimethylformamide, acetone a me nā mea hoʻoheheʻe organik ʻē aʻe, hiki ʻole ke hoʻoheheʻe ʻia i ka ether, chloroformand 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 me ka melemele ʻulaʻula pauka, hoʻohana nui ʻia i ka synthesis o polyimide, octyl pyromelliate, etc.
| 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 |
E leka uila mai iā mākou e kiʻi iā COA a me MSDS. Mahalo.
