Iimpawu zefilimu zePI zebhodi ye-mica

1. I-polyimide edityaniswe kwi-biphenyl dianhydride kunye ne-p-phenylenediamine ineqondo lobushushu lokubola kwe-500 ℃, yenye yeentlobo eziphezulu zokuzinza kwe-polymers ukuza kuthi ga ngoku.

2. IPolyimide inokumelana namaqondo obushushu asezantsi kakhulu, njengokungaqhekeki kwaye aqhekeke kwi-helium engamanzi ngo -269 ° C.

3. I-Polyimide ineempawu ezintle kakhulu zoomatshini. Amandla okuqina kweeplastiki ezingagcwaliswanga zingaphezulu kwe-100Mpa, ifilimu yeKapton (iKapton) ingaphezulu kwe-170Mpa, kwaye uhlobo lwe-biphenyl polyimide (UpilexS) lufikelela kuma-400Mpa. Njengeplastiki yobunjineli, isixa sefilimu ye-elastic ihlala i-3-4 Gpa, kwaye ifayibha inokufikelela kwi-200 Gpa. Ngokwezibalo zethiyori, ifayibha eyenziwe nge-anhidride ye-phthalic kunye ne-p-phenylenediamine inokufikelela kwi-500 Gpa, yesibini emva kwe-carbon fiber.

4. Ezinye iintlobo zepolyimide azinyibiliki kwizinyibilikisi eziphilayo, zizinzile ekunyibilikiseni iiasidi, kwaye iintlobo ngokubanzi azimelani nehydrolysis. Oku kubonakala ngathi kukusilela kokusebenza kwenza i-polyimide yenze umahluko omkhulu kwezinye iipolym eziphezulu zokusebenza. Uphawu loku kukuba i-dianhydride kunye ne-diamine ekrwada inokufunyanwa nge-alkaline hydrolysis. Umzekelo, kwifilimu yeKapton, inqanaba lokufumana kwakhona linokufikelela kwi-80% -90%. Ukutshintsha ulwakhiwo kunokuvelisa iintlobo ezinganyangekiyo kwi-hydrolysis, ezinje ngezo zinokumelana nokubila kwi-120 ° C iiyure ezingama-500.

5. Umlingani wokwanda kwe-polyimide yi-2 × 10-5-3 × 10-5 ° C, i-Guangcheng i-thermoplastic polyimide yi-3 × 10-5 ° C, uhlobo lwe-biphenyl lunokufikelela kwi-10-6 ° C, kwaye iintlobo nganye ziyafumaneka . Ukuya kwi-10-7 ° C.

6. I-Polyimide ine-radiation ephezulu yokumelana nemitha, kwaye inqanaba layo lokugcina amandla kwefilimu ngama-90% emva kwe-5 × 109rad i-electron irradiation ekhawulezayo.

7. I-Polyimide ineempawu ezifanelekileyo ze-dielectric. I-dielectric rhoqo i malunga ne-3.4. Ukuzisa i-fluorine okanye ukusasaza ubungakanani be-nanometer yomoya kwi-polyimide, i-dielectric engaguqukiyo inokuncitshiswa ibe malunga ne-2.5. Ukulahleka kwe-dielectric yi-10-3, kwaye amandla ombane yi-100-300KV / mm. Ezi propati zisenokugcinwa kwinqanaba eliphezulu kubushushu obubanzi kunye nobubanzi bexesha.