3,3′,4,4′-Biphenyltetracarboxylic dianhydride CAS 2420-87-3

I-CAS:2420-87-3

Ifomula Yamamolekyuli:C16H6O6

Isisindo sama-molecule:294.22

I-EINECS:219-342-9

Amagama afanayo:3,3', 4,4'-Biphenyltetracarboxylic dianhydride 97%; 4,4'-Biphthalic Anhydride (ehlanjululwe yi-sublimation); 3,3'4,4'-Biphenyl tetracarboxylic acid dianhydride(s-BPDA); S-BDPA; S-BPDA; [5,5'-biisobenzofuran]-1,1',3,3'-tetrone; [5,5'-Biisobenzofuran]-1,1',3,3'-tetrone; 5,5'-Biisobenzofuran-1,1',3,3'-tetrone

Shiya Umlayezo Wakho

Imininingwane Yomkhiqizo

Landa

Amathegi Omkhiqizo

Kuyini i-3,3',4,4'-Biphenyltetracarboxylic dianhydride CAS 2420-87-3?

3,3 ', 4,4' - I-Biphenyltetracarboxylic dianhydride iyinto ebalulekile ye-polyimide monomer enezinhlelo zokusebenza eziningi ekuhlanganisweni kwezinto ze-polyimide ezingamelana nokushisa okuphezulu. Isetshenziselwa ukukhiqizwa kwemikhiqizo ye-polyimide nezinto zayo ezihlanganisiwe, izinto ezisetshenziswa emithini.

I-CAS 2420-87-3 ye-3,3', 4,4'-Biphenyltetracarboxylic dianhydride iyisakhiwo esikhethekile kanye ne-compound ye-aromatic dianhydride esebenza kahle kakhulu, futhi iyi-monomer eyinhloko yokwenziwa kwezinto ze-polymer ezisebenza kahle kakhulu. Inendawo yokusetshenziswa engenakuphikwa emikhakheni efana ne-aerospace, ulwazi lwe-elekthronikhi, kanye nemishini ephezulu.

Imininingwane

Into	Imininingwane
Indawo yokubilisa	614.9±48.0 °C (Kubikezelwe)
Ubuningi	1.625±0.06 g/cm3 (Kubikezelwe)
Indawo yokuncibilika	299-305 °C (ngokukhanya)
ubuningi be-λ	300nm (elikhanyayo)
Ubumsulwa	99%
Izimo zokugcina	Isimo sezulu esingenampilo, Izinga lokushisa legumbi

Isicelo

I-dianhydride engu-3,3', 4,4'-Biphenyltetracarboxylic (i-CAS 2420-87-3, efingqiwe njenge-BPDA) iyi-monomer eyinhloko yokwenza izinto ze-polymer ezisebenza kahle kakhulu, futhi ukusetshenziswa kwayo kugxile kakhulu ensimini yezinto ezisezingeni eliphezulu.

I-dianhydride engu-1. 3,3', 4,4'-Biphenyltetracarboxylic isetshenziswa njengezingxenye zesakhiwo ezimelana nokushisa okuphezulu zemikhumbi-mkhathi (njengezingxenye zendawo zezingxenye zesathelayithi) kanye nezingubo zokuvikela ukufudumala zezingxenye zenjini; I-substrate ye-antenna eguquguqukayo yemishini kanye nesendlalelo sokuvikela ukufudumala kwekhebula esimelana nokushisa okuphezulu.

2. I-BPDA ingasetshenziswa kumasekethe ahlanganisiwe (ama-ics): ukulungiselela amafilimu okuvikela angaphakathi kwezingqimba, ukunciphisa ukuguquguquka kobukhulu okubangelwa ukushisa kwama-chip, nokuthuthukisa ukuzinza kwama-chip. Yenziwe ngezinto ezihlanganisiwe ze-PI (njenge-carbon fiber egcwele kanye ne-graphite), ezisetshenziswa kuma-bearings kanye nama-seal ngaphansi kwezimo zokusebenza ezishisa kakhulu (njengokuvala izingxenye zezinjini zezimoto kanye nemishini yamakhemikhali), ukufaka esikhundleni sezinto zensimbi ukunciphisa ukuguguleka nokugqwala.

3. Ngaphandle kwe-polyimide, i-BPDA ingasabela nama-monomers ahlukene ukuze yakhe ezinye izinto ze-polymer ezisebenzayo, yandisa imingcele yokusetshenziswa kwayo

I-polyamideimide (PAI) yokwenziwa: I-BPDA iphendula ne-diisocyanate ukuze yakhe i-PAI. Lolu hlobo lwezinto luhlanganisa ukumelana nokushisa okuphezulu kwe-PI kanye nokumelana nomthelela kwe-polyamide, futhi lungasetshenziswa ukulungiselela izingxenye zepulasitiki zobunjiniyela eziphezulu.

I-polyetherimide yokwenziwa (i-PEI): Isabela nama-diamine aqukethe izibopho ze-ether ukuze yakhe i-PEI. Ukusebenziseka kwayo kuphakeme kunokwe-PI yendabuko. Ingenziwa ibe amagobolondo amadivayisi kagesi kanye nezixhumi ezimelana nokushisa okuphezulu ngokubumba umjovo, kucatshangelwa kokubili amandla kanye nokusebenziseka kalula.

4. Amaqembu e-anhydride ku-molecule ye-BPDA angabhekana nokusabela kokuvula indandatho namaqembu e-epoxy e-epoxy resin futhi asetshenziswe njengezinto zokupholisa ezimelana nokushisa okuphezulu:

I-Anhydride engu-4,4'-Biphthalic 2420-87-3 isetshenziswa kakhulu ekulungiseleleni "izinto ezihlanganisiwe ze-epoxy ezingamelana nokushisa okuphezulu", njengokuqiniswa kwezimpande zama-wind turbine blades (okudingeka zimelane nokuguga kwangaphandle kokushisa okuphezulu isikhathi eside) kanye nokuqiniswa kwe-epoxy substrates zamabhodi wesekethe aphezulu, ukuthuthukisa ukuzinza kokushisa (i-Tg yezinto eziqinisiwe ingandiswa ibe ngaphezu kuka-180℃) kanye namandla omshini wezinto ze-epoxy.