Cas no:89-32-7 PMDA Pyromellitic dianhydride

He kupu whakataki poto

Pyromellitic dianhydride (PMDA), ko nga hua parakore he ma, he kiripiri kowhai iti ranei. Ka kitea ki te hau makuku ka tere te tango i te makuku mai i te hau, ka whakamarohia ki roto i te Pyromellitic Acid. Ka memeha ki te dimethyl sulfoxide, te dimethylformamide, te acetone me etahi atu whakarewa pararopi, kaore e rewa i roto i te etera, te chloroform me te benzene. Ko te nuinga ka whakamahia hei rauemi mata mo te polyimide, me te kaihoko whakawhiti mo te hanga i te kaihoko rongoa epoxy me te mate polyester resin.

Ko te waikawa Pyromellitic (PMA), e mohiotia ana ko te 1,2,4,5-benzenetetracarboxylicacid, he ma ki te kowhai kowhai te paura karaihe, e whakamahia ana i roto i te whakahiatotanga o te polyimide, octyl pyromelliate, me etahi atu, ko te mea matua mo te hanga o te mating agent.