Pyromellitic Dianhydride Ine CAS 89-32-7

CAS:89-32-7

MF:C10H2O6

MW:218.12

EINECS Kwete:201-898-9

Mashoko anoreva zvakafanana:1,2,4,5-Benzenetetracarboxylic1,2:4,5-dianhydride; 1,2,4,5benzenetetracarboxylic1,2:4,5dianhydride; 1,2,4,5-benzenetetracarboxylic1,2:4,5-dianhydride; 1,2,4,5-Benzenetetracrboxylicdianhydride; pyromelliticacidanhydride; pyromelliticaciddianhydride; Pyromelliticanhydride; 1,2,4,5-BENZENETETRACARBOXYLICANHYDRIDE

Siya Mharidzo Yako

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Chii chinonzi Pyromellitic Dianhydride Ine CAS 89-32-7?

Iyo pyromellitic dianhydride (yakapfupikiswa sePMDA), iyo inonyanya kushandiswa kugadzira polyimide, nekuti polyimide ine yakanyanya kunaka-yakanyanya kupisa kupisa, asidhi uye alkali kuramba, yakanakisa Nekuda kwema mechanical properties, magetsi emagetsi uye dimensional kugadzikana, inoshandiswa zvakanyanya munzvimbo dzepamusoro-soro dzakadai sekufamba nendege, zvinhu zvemuchadenga, uye aerospace zvine simba.

Tsanangudzo

Item	Standard
Chitarisiko	Makristasi machena
Melting point	286 ℃-288 ℃
Free acid kukwikwidza	≤0.5wt%
PURITY(%)	≥99.5%

Application

Pyromellitic dianhydride (PMDA) chinhu chakakosha mbishi muindasitiri yeorganic synthesis, pamwe neyakaomeswa mbishi yekugadzirwa kwezvinhu zvitsva zvemakemikari uye yakakwira kukosha-yakawedzerwa zvigadzirwa zvemakemikari. Inonyanya kushandiswa kugadzira polyimide monomers, uye inogona zvakare kushandiswa seMushonga wekurapa epoxy resin uye cross-linking agent yepolyester resin, inoshandiswa mukugadzira phthalocyanine dhayi yebhuruu uye zvimwe zvakakosha zvinobva, nezvimwewo, uye ine zvakawanda zvekushandisa. Pyromellitic dianhydride, inozivikanwawo sehomoanhydride, ine yakakosha mamolecular chimiro uye inogona kushandiswa kugadzira zvinhu zvine kupisa kupisa, kuvharwa kwemagetsi uye kupikisa kwemakemikari, pakati peiyo inonyanya kukosha kushandiswa ndeye monolayer ye polyimide. Inogadzirwa neine anonhuwirira diamine kuwana polyimide purasitiki, asi kuchena kwepyromellitic dianhydride kwakakwira zvakanyanya, inoda kudarika 99%.