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Ka helu helu: 89-32-7 PMDA Pyromellitic dianhydride

Ka helu helu: 89-32-7 PMDA Pyromellitic dianhydride

ʻO ka wehewehe 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.


Huahana Huahana

Huahana Huahana

Hōʻike huahana

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

 

Hōʻike

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