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

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

I-CAS:2420-87-3

Ifomula yeMolekyuli:C16H6O6

Ubunzima beemolekyuli:294.22

I-EINECS:219-342-9

Izithethantonye:3,3', 4,4'-Biphenyltetracarboxylic dianhydride 97%; 4,4'-Biphthalic Anhydride (ecociweyo 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

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Iinkcukacha zeMveliso

Khuphela

Iithegi zeMveliso

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

3,3 ', 4,4' - I-Biphenyltetracarboxylic dianhydride yinto ebalulekileyo ye-polyimide monomer enezicelo ezininzi ekuhlanganiseni izinto ze-polyimide ezimelana nobushushu obuphezulu. Isetyenziselwa ukuvelisa iimveliso ze-polyimide kunye nezinto zazo ezidityanisiweyo, izinto eziphakathi zamayeza.

I-CAS 2420-87-3 ye-3,3', 4,4'-Biphenyltetracarboxylic dianhydride sisakhiwo esikhethekileyo kunye ne-compound ye-aromatic dianhydride esebenza kakuhle kakhulu, kwaye ikwayi-monomer ephambili yokwenziwa kwezinto ze-polymer ezisebenzayo. Inendawo yokusetyenziswa engenakutshintshwa kwiindawo ezifana ne-aerospace, ulwazi lwe-elektroniki, kunye nezixhobo eziphezulu.

Inkcazo

Into	Inkcazo
Indawo yokubila	614.9±48.0 °C (Kuqikelelwe)
Uxinano	1.625±0.06 g/cm3 (Kuqikelelwe)
Indawo yokunyibilika	299-305 °C (elikhanyayo)
ubuninzi be-λ	300nm (elikhanyayo)
Ubunyulu	99%
Iimeko zokugcina	Umoya ongcolileyo, Ubushushu begumbi

Isicelo

I-3,3', 4,4'-Biphenyltetracarboxylic dianhydride (i-CAS 2420-87-3, efinyeziweyo njenge-BPDA) yi-monomer eyintloko yokwenza izinto ze-polymer ezisebenzayo kakhulu, kwaye ukusetyenziswa kwayo kugxile kakhulu kwintsimi yezinto eziphezulu.

1. 3,3', 4,4'-Biphenyltetracarboxylic dianhydride isetyenziswa njengezixhobo zesakhiwo ezimelana nobushushu obuphezulu kwizixhobo zeenqwelo-moya (ezifana nezixhobo zasekuhlaleni zeekhabhathi zesathelayithi) kunye neengubo zokwambathisa izixhobo zenjini; I-substrate ye-antenna eguquguqukayo yezixhobo kunye nomaleko wokwambathisa intambo omelana nobushushu obuphezulu.

2. I-BPDA ingasetyenziswa kwiisekethe ezidibeneyo (ics): ukulungiselela iifilimu zokukhusela ezidibanisa iileya, ukunciphisa ukuguquguquka okubangelwa kukufudumala kweetshiphusi, kunye nokuphucula uzinzo lweetshiphusi. Yenziwe ngezinto ze-PI ezidityanisiweyo (ezifana ne-carbon fiber kunye ne-graphite egcweleyo), ezisetyenziswa kwiibheringi kunye nezitywini phantsi kweemeko zokusebenza ezishushu kakhulu (ezifana nokuvala izinto zeenjini zeemoto kunye nezixhobo zeekhemikhali), ukutshintsha izinto zesinyithi ukunciphisa ukuguguleka kunye nokubola.

3. Ngaphandle kwe-polyimide, i-BPDA isenokusabela kunye nee-monomers ezahlukeneyo ukwenza ezinye izinto ze-polymer ezisebenzayo, yandisa imida yayo yokusetyenziswa

I-polyamideimide yokwenziwa (PAI) : I-BPDA iphendula kunye ne-diisocyanate ukuze yenze i-PAI. Olu hlobo lwezinto ludibanisa ukumelana nobushushu obuphezulu be-PI kunye nokuxhathisa kwempembelelo kwe-polyamide, kwaye ingasetyenziselwa ukulungiselela iindawo zeplastiki zobunjineli eziphezulu.

I-polyetherimide eyenziweyo (i-PEI): Isabela kwiidiamines ezineebhondi ze-ether ukuze zenze i-PEI. Ukusebenziseka kwayo kungaphezulu kunokwe-PI yendabuko. Ingenziwa ibe ziigobolondo zezixhobo ze-elektroniki kunye nezihlanganisi ezimelana nobushushu obuphezulu ngokubumba inaliti, kuthathelwa ingqalelo amandla kunye nokusebenziseka lula.

4. Amaqela e-anhydride kwimolekyuli ye-BPDA anokungenelwa ziimpendulo zokuvula i-ring kunye namaqela e-epoxy e-epoxy resin kwaye asetyenziswe njengee-agents zokuphilisa ezimelana nobushushu obuphezulu:

I-4,4'-Biphthalic Anhydride 2420-87-3 isetyenziselwa kakhulu ukulungiselela "izinto ezidityanisiweyo ze-epoxy ezimelana nobushushu obuphezulu", ezifana nokucocwa kweengcambu zeeblade ze-wind turbine (ezifuna ukumelana nokuguga okungaphezulu kwexesha elide ngaphandle) kunye nokucocwa kwe-epoxy substrates kwiibhodi zesekethe eziphezulu, ukuphucula uzinzo lobushushu (i-Tg yezinto ezicociweyo inokwandiswa ibe ngaphezulu kwe-180℃) kunye namandla oomatshini ezinto ze-epoxy.