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

CAS:2420-87-3

Tsarin Kwayoyin Halitta:C16H6O6

Nauyin kwayoyin halitta:294.22

EINECS:219-342-9

Ma'ana iri ɗaya:3,3',4,4'-Biphenyltetracarboxylic dianhydride 97%; 4,4'-Biphthalic Anhydride (wanda aka tsarkake ta hanyar 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

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Menene 3,3',4,4'-Biphenyltetracarboxylic dianhydride CAS 2420-87-3?

3,3 ', 4,4' - Biphenyltetracarboxylic dianhydride muhimmin abu ne na polyimide monomer wanda ke amfani da shi sosai wajen haɗa kayan polyimide masu jure zafi mai yawa. Ana amfani da shi don samar da samfuran polyimide da kayan haɗin su, tsaka-tsakin magunguna.

CAS 2420-87-3 na 3,3',4,4'-Biphenyltetracarboxylic dianhydride tsari ne na musamman da kuma ingantaccen sinadarin dianhydride mai ƙanshi, kuma shi ma babban monomer ne don haɗa kayan polymer masu inganci. Yana da matsayin aikace-aikacen da ba za a iya maye gurbinsa ba a fannoni kamar sararin samaniya, bayanai na lantarki, da kayan aiki masu inganci.

Ƙayyadewa

Abu	Ƙayyadewa
Wurin tafasa	614.9±48.0 °C(An yi hasashen)
Yawan yawa	1.625±0.06 g/cm3 (An yi hasashen)
Wurin narkewa	299-305 °C (haske)
λmax	300nm (haske)
Tsarkaka	99%
Yanayin ajiya	Yanayi mara motsi, Zafin ɗaki

Aikace-aikace

3,3',4,4'-Biphenyltetracarboxylic dianhydride (CAS 2420-87-3, wanda aka taƙaita a matsayin BDDA) babban monomer ne don haɗa kayan polymer masu aiki mai girma, kuma aikace-aikacensa sun fi mai da hankali kan filin kayan aiki masu girma.

1. Ana amfani da 3,3',4,4'-Biphenyltetracarboxylic dianhydride a matsayin kayan gini masu jure zafi mai yawa ga sararin samaniya (kamar sassan gida na casings na tauraron ɗan adam) da kuma rufin rufi don sassan injin; Ƙarfin eriya mai sassauƙa na kayan aiki da kuma layin rufin kebul mai jure zafi mai yawa.

2. Ana iya amfani da BPDA a cikin da'irori masu haɗawa (ics): don shirya fina-finan rufewa tsakanin layuka, rage nakasuwar girma da dumama guntu ke haifarwa, da kuma haɓaka kwanciyar hankali na guntu. An yi shi da kayan haɗin PI (kamar cike da fiber carbon da graphite), waɗanda ake amfani da su a cikin bearings da hatimi a ƙarƙashin yanayin aiki mai zafi (kamar sassan rufewa na injunan mota da kayan aikin sinadarai), suna maye gurbin kayan ƙarfe don rage lalacewa da tsatsa.

3. Bayan polyimide, BDDA kuma tana iya amsawa da monomers daban-daban don samar da wasu kayan polymer masu aiki, tana faɗaɗa iyakokin aikace-aikacenta.

Polyamideimide na roba (PAI): BDA yana yin aiki tare da diisocyanate don samar da PAI. Wannan nau'in kayan yana haɗa juriyar PI mai zafi da juriyar tasiri na polyamide, kuma ana iya amfani da shi don shirya sassan filastik na injiniya masu inganci.

Polyetherimide na roba (PEI): Yana yin aiki da diamines waɗanda ke ɗauke da haɗin ether don samar da PEI. Ikon sarrafawa ya fi na PI na gargajiya. Ana iya yin shi a cikin harsashi na na'urorin lantarki da masu haɗin da ke jure zafi mai yawa ta hanyar ƙera allura, la'akari da ƙarfi da sauƙin sarrafawa.

4. Rukunin anhydride a cikin kwayar halittar BDDA na iya fuskantar halayen buɗe zobe tare da rukunin epoxy na resin epoxy kuma ana amfani da su azaman maganin warkarwa mai jure zafi mai yawa:

Ana amfani da 4,4'-Biphthalic Anhydride 2420-87-3 musamman don shirya "kayayyakin haɗin epoxy masu jure zafi mai yawa", kamar su warkar da tushen ruwan wukake na iska (waɗanda ke buƙatar jure tsufa mai zafi na dogon lokaci a waje) da kuma warkar da substrates na epoxy don allunan da'ira masu tsayi, don haɓaka kwanciyar hankali na zafi (ana iya ƙara Tg na kayan da aka warke zuwa sama da 180℃) da ƙarfin injina na kayan epoxy.