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

Ukusetyenziswa

3,3', 4,4'-Biphenyltetracarboxylic dianhydride (BPDA)sisixhobo esibalulekileyo kwi-organic synthesis kwaye sineendlela ezahlukeneyo zokusetyenziswa:

Ukwenziwa kwePolyimide

• Iifilimu ezisebenza kakuhle: Zingadlula kwi-polycondensation reaction kunye nee-diamine compounds ukuvelisa iifilimu ze-polyimide. Ezi filimu zinokumelana okuhle kakhulu nobushushu obuphezulu. Nokuba kwindawo enobushushu obuphezulu obungaphezulu kwama-200 °C, zisenokugcina iipropati ezilungileyo zoomatshini kunye nobushushu bombane. Ke ngoko, zihlala zisetyenziswa kwicandelo leenqwelo moya ukukhusela ubushushu beemoto kunye nezixhobo zombane okanye njengezinto ezisisiseko zeebhodi zesekethe eziprintiweyo eziguquguqukayo.
• Iiplastiki zobunjineli: Iiplastiki zobunjineli ze-polyimide ezidityanisiweyo zinamandla aphezulu, ziqinile kakuhle, kwaye azigugi. Zingafakwa kwi-injection-mold ukuze zenze ezinye iindawo ezichanekileyo ezineemfuno ezingqongqo zeempawu zoomatshini, njengezibiyeli ezincinci ezijikeleze iinjini zeenqwelo-moya kunye neendawo zokuhambisa ngaphakathi kweewotshi zoomatshini eziphezulu.
• Intsimi yokugquma: Iingubo ze-polyimide ezenziwe ngokusekelwe kwi-BPDA zinokumelana nokugqwala kweekhemikhali okubalaseleyo. Xa zisetyenziswa kwiindonga zangaphakathi zeetanki zokugcina iikhemikhali kunye nee-reactors, zinokumelana nokukhukuliseka kwee-asidi ezahlukeneyo, iziseko, kunye nezinyibilikisi zendalo ixesha elide, okuqinisekisa ubomi benkonzo yezixhobo. Kwangaxeshanye, zikwanokumelana nobushushu obuhle. Xa zigqunywe kwiipayipi zokukhupha umoya ezinobushushu obuphezulu kunye neekhabhathi zeenjini, aziyi kukrazuka lula ngenxa yobushushu obuphezulu.
• Izinto zefayibha: Isetyenziselwa ukuvelisa iifayibha ezisebenza kakuhle. Iifayibha zepolyimide eziveliswayo zinamandla aphezulu, imodulus ephezulu, kunye nozinzo oluhle kakhulu lobushushu. Zihlala zisetyenziselwa ukuvelisa iisuti ezingatshiyo, iintambo ezikhethekileyo zeenqwelo-moya, njl.njl., zibonelela ngokhuseleko oluthembekileyo kubasebenzi nakwizixhobo kwiimeko zobushushu obuphezulu kunye nomngcipheko ophezulu.

Ukupakishwa kunye nokuthunyelwa

20KG/Idrama okanye ngokweemfuno zomthengi.
Yeyokwempahla eqhelekileyo kwaye inokuhanjiswa ngolwandle nangomoya

Gcina kwaye ugcine

Ixesha lokuphelelwa: Iinyanga ezingama-24 ukususela kumhla wokwenziwa kwayo kwiphakheji yokuqala engavulwanga igcinwe kwindawo epholileyo neyomileyo kude nelanga elithe ngqo, amanzi.
Indawo yokugcina umoya, Ukomisa kubushushu obuphantsi, Yahlulwe kwii-oxidants, ii-asidi.