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

CAS:2420-87-3

Foromo ea limolek'hule:C16H6O6

Boima ba limolek'hule:294.22

EINECS:219-342-9

Mantsoe a tšoanang:3,3', 4,4'-Biphenyltetracarboxylic dianhydride 97%; 4,4'-Biphthalic Anhydride (e hloekisitsoeng ka 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

Siea Molaetsa oa Hao

Qaqiso ea Sehlahisoa

Khoasolla

Li-tag tsa Sehlahisoa

3,3',4,4'-Biphenyltetracarboxylic dianhydride CAS 2420-87-3 ke eng?

3,3 ', 4,4' - Biphenyltetracarboxylic dianhydride ke thepa ea bohlokoa ea polyimide monomer e nang le ts'ebeliso e pharaletseng tlhahisong ea thepa ea polyimide e hanyetsanang le mocheso o phahameng. E sebelisoa bakeng sa tlhahiso ea lihlahisoa tsa polyimide le thepa ea tsona e kopaneng, e leng metsoako ea meriana.

CAS 2420-87-3 ea 3,3', 4,4'-Biphenyltetracarboxylic dianhydride ke sebopeho se ikhethang le motsoako o motle oa aromatic dianhydride, 'me hape ke monomer ea mantlha bakeng sa ho kopanya thepa ea polymer e sebetsang hantle. E na le boemo bo ke keng ba nkeloa sebaka masimong a kang aerospace, tlhahisoleseling ea elektroniki, le lisebelisoa tsa maemo a holimo.

Tlhaloso

Ntho	Tlhaloso
Sebaka sa ho belisa	614.9±48.0 °C (E boletsoeng esale pele)
Botenya	1.625±0.06 g/cm3 (E boletsoeng esale pele)
Sebaka sa ho qhibiliha	299-305 °C (ka hora)
λmax	300nm (e bonesitsoeng)
Bohloeki	99%
Maemo a polokelo	Sepakapaka se se nang moea, Mocheso oa Kamore

Kopo

3,3', 4,4'-Biphenyltetracarboxylic dianhydride (CAS 2420-87-3, e khutsufalitsoeng e le BPDA) ke monomer ea mantlha bakeng sa ho kopanya thepa ea polymer e sebetsang hantle, 'me ts'ebeliso ea eona e shebane haholo le tšimo ea thepa ea maemo a holimo.

1. 3,3', 4,4'-Biphenyltetracarboxylic dianhydride e sebediswa e le dikarolo tsa sebopeho tse hanelang mocheso o phahameng bakeng sa difofane tsa sepakapaka (jwalo ka dikarolo tsa lehae tsa dikheishene tsa sathelaete) le dikoahelo tsa ho kenya mocheso bakeng sa dikarolwana tsa enjene; Karolo e tenyetsehang ya antenna ya disebediswa le lera la ho kenya mocheso o phahameng la thapo.

2. BPDA e ka sebelisoa lipotolohong tse kopaneng (ics): ho lokisa lifilimi tsa ho thibela mocheso tse kenellang, ho fokotsa phetoho ea boholo bo bakoang ke ho futhumatsa chip, le ho ntlafatsa botsitso ba chip. E entsoe ka thepa ea PI e kopaneng (joalo ka fiber ea carbon e tletseng le graphite), tse sebelisoang li-bearing le litiisong tlas'a maemo a ts'ebetso a mocheso o phahameng (joalo ka likarolo tsa ho tiisa tsa lienjene tsa likoloi le lisebelisoa tsa lik'hemik'hale), ho nkela thepa ea tšepe sebaka ho fokotsa ho tsofala le ho bola.

3. Ntle le polyimide, BPDA e ka boela ea arabela le li-monomer tse fapaneng ho theha lisebelisoa tse ling tse sebetsang tsa polymer, e atolosa meeli ea ts'ebeliso ea eona.

Polyamideimide ea maiketsetso (PAI): BPDA e arabela le diisocyanate ho theha PAI. Mofuta ona oa thepa o kopanya khanyetso ea mocheso o phahameng oa PI le khanyetso ea tšusumetso ea polyamide, 'me e ka sebelisoa ho lokisa likarolo tsa polasetiki tsa boenjiniere tse phahameng.

Polyetherimide ea maiketsetso (PEI): E arabela le diamine tse nang le litlamo tsa ether ho theha PEI. Bokhoni ba eona ba ho sebetsa bo phahametse ba PI ea setso. E ka etsoa likhetla tsa lisebelisoa tsa elektroniki le lihokelo tse hanelang mocheso o phahameng ka ho enta ka ente, ho nahanoa ka matla le bonolo ba ho sebetsa.

4. Lihlopha tsa anhydride molek'huleng ea BPDA li ka feta liketsong tsa ho bula selikalikoe le lihlopha tsa epoxy tsa resin ea epoxy 'me tsa sebelisoa e le li-agent tse phekolang tse hanelang mocheso o phahameng:

4,4'-Biphthalic Anhydride 2420-87-3 e sebediswa haholoholo bakeng sa ho lokisa "disebediswa tse kopaneng tsa epoxy tse hanelang mocheso o phahameng", tse kang ho phekolwa ha metso ya mahare a turbine ya moya (a hlokang ho mamella botsofadi ba nako e telele ba mocheso o phahameng wa kantle) le ho phekolwa ha di-substrate tsa epoxy bakeng sa diboto tsa potoloho tse phahameng, ho ntlafatsa botsitso ba mocheso (Tg ya thepa e phekotsweng e ka eketswa ho feta 180℃) le matla a mechini a thepa ya epoxy.