Astaamaha filimka PI ee loox mica

1. Marka la eego falanqaynta heerkulbeegga, heerkulka kala -goynta ee polyimide -ka udugga leh guud ahaan waa qiyaastii 500 ℃. Polyimide-ka laga sameeyay biphenyl dianhydride iyo p-phenylenediamine wuxuu leeyahay heerkul kala-guur oo kuleyl ah 600 ℃, kaasoo ah mid ka mid ah noocyada xasilloonida kuleylka sare ee polymer-ka illaa hadda.

2. Polyimide wuxuu u adkeysan karaa heerkulka aadka u hooseeya, sida inuusan jabin oo ku dillaacin helium dareere ah -269 ° C.

3. Polyimide waxay leedahay sifooyin farsamo oo aad u fiican. Awoodda gilgilashada ee balaastigga aan la buuxin ayaa ka sarreeya 100Mpa, filimka Kapton (Kapton) wuxuu ka sarreeyaa 170Mpa, iyo nooca biphenyl polyimide (UpilexS) wuxuu gaaraa 400Mpa. Sida balaastigga injineernimada, xaddiga filimka laastikada badanaa waa 3-4 Gpa, oo fiyuusku wuxuu gaari karaa 200 Gpa. Marka loo eego xisaabinta teoriga, fiber-ka ay soo saarto phthalic anhydride iyo p-phenylenediamine waxay gaari kartaa 500 Gpa, oo ku xigta kaliya fiber carbon.

4. Qaar ka mid ah noocyada polyimide -ka ayaa ku milmi kara dareerayaasha dabiiciga ah, xasilloon si ay u milmaan aashitooyinka, iyo noocyada guud uma adkaystaan ​​hydrolysis. Wax-qabadkan u muuqda mid gaaban ayaa polyimide-ka ka dhigaya farqi weyn polymer-yada kale ee waxqabadka sarreeya. Sifada tan ayaa ah in alaabta ceyriinka ah dianhydride iyo diamine lagu soo kaban karo hydrolysis alkaline. Tusaale ahaan, filimka Kapton, heerka soo-kabashadu wuxuu gaari karaa 80%-90%. Beddelidda qaab -dhismeedka ayaa sidoo kale soo saari kara noocyo aad u adkaysi u leh hydrolysis, sida kuwa u adkaysan kara karkarinta 120 ° C muddo 500 saacadood ah.

5. Isugeynta ballaarinta kuleylka ee polyimide waa 2 × 10-5-3 × 10-5 ° C, Guangcheng polyimide thermoplastic waa 3 × 10-5 ° C, nooca biphenyl wuxuu gaari karaa 10-6 ° C, iyo noocyo shaqsiyeed ayaa jira . Illaa 10-7 ° C.

6. Polyimide waxay leedahay iska caabin shucaac oo sareysa, iyo heerka haynta xooggeeda filimku waa 90% kadib 5 × 109rad shucaaca elektaroonigga degdegga ah.

7. Polyimide waxay leedahay sifooyin koronto oo wanaagsan. Joogtada korontada ayaa qiyaastii ah 3.4. Soo bandhigida fluorine ama kala firdhinta cabirka nanometer -ka hawada ee polyimide, joogteynta dielectric -ga waxaa lagu dhimi karaa ilaa 2.5. Luminta korontada ayaa ah 10-3, xoogga dielectric-na waa 100-300KV/mm. Guryahaan wali waxaa lagu hayn karaa heer sare heerkulka ballaaran iyo inta jeer.