2,Polyimimide Kev faib tawm thiab ntawv thov
(6) {{. polyimide adhesive
PI (polyimide yog chav kawm ntawm cov organic heterocyclics thiab lwm yam kev tsis txaus siab rau hydraline, tau daws cov teeb meem ntawm cov teeb meem ntawm cov teeb meem qis dua kub-resistant kub ntawm cov kev txwv ntawm lwm cov organic .
Los ntawm xyoo 1970, National Aeronautics thiab Chaw Tswj Xyuas Chaw (NASA) Langley Kev Tshawb Fawb PI et1 {., thiab tau siv dav hauv ntau lub dav hlau- Cov tuam txhab nto moo ntawm cov plhesive ntawm cov tuam txhab nplaum tshaj plaws PL.
(7).Yeeb yaj kiab polyimide
Thaum sawv ntxov ntxov ntawm lub Kaum Ob Hlis 8, 2018, lub chang'e-4 kev soj ntsuam lub teb chaws nyob sab tom qab ntawm lub hli rov qab mus rau sab nraum qab ntawm lub hli, cim chaw nrog "Suav logo" .
Nws tau tshaj tawm tias National Chij ntawm kev sojntsuam tsis yog ua rau muaj kev kub ntxhov, yog lub sijhawm Lunar tau txais txiaj ntsig zoo tshaj plaws, nyob rau sab nraud ntawm lub hnub ci, nyob sab nraum lub lunar module, qhov kub thiab txias rau lub hli yuav plummet rau rho 233℃.
Xws li qhov sib txawv kub yog qhov nyuaj rau cov ntaub ntawv dog dig rau kev ua kom muaj zog, thiab tseem muaj cov nyhuv customiation, thiab tseem muaj cov nyhuv customiet, thiab tseem muaj cov nyhuv muaj zog heev rau cov ntaub ntawv .
Cov chij chij tso nrog cov haujlwm tseem ceeb no yog qhov sib txawv ntawm cov chij hauv av, thiab nws tuaj yeem tiv thaiv cov kab mob caj dab hauv av yam tsis muaj fading lossis deformation .
Zaj duab xis polyimos ntxiv rau ntawm lub nkoj dav hlau uas yog "lub tsho tiv no, ci ntsa iab, hauv cov duab ua kua muaj peev xwm pom nws cov duab ua kua tuaj yeem siv los ua cov khoom muag muag muag ci ntsa iab; PI tuaj yeem siv los ua cov khoom siv lithium tom ntej ntawm Lithium-ion. Yog li ntawm .
Nyob rau hauv xyoo tsis ntev los no, nrog kev txhim kho kev lag luam hluav taws xob, kev ua haujlwm siab polyimide cov kab xev, ntim khoom siv rau hauv cov kab xev, hloov tau ntim khoom, hloov tau ntim cov kab xev thiab yog li ntawm {{3}
Zaj duab xis polyimide, Source: Yung DA Electric
Ib qho ntxiv, polyimide yog cov khoom siv zoo tshaj plaws rau cov khoom siv kub siab thiab zoo heev} Hydrogen / Nitrogen, Nitrogen / Oxygen, Cov pa roj carbon dioxide / thiab cov pa roj caraporate / metcrodtration membranes {}}} Txawm li cas los xij, cov pa polyimide cov resins nyuaj rau yaj thiab yaj, yog li ua kom muaj kev cuam tshuam ntawm lawv cov ntaub ntawv muaj kev lag luam thoob plaws {9}
(8).} polyimide airgel
Polyimide Airgel (Pia) yog cov khoom siv sib tw ntawm polyimide, tab sis kuj tsis muaj qhov ua kom zoo, tsis muaj kev sib txuas lus zoo, tab sis kuj tsis yog muaj kev cuam tshuam zoo nkauj, ib puag ncig acoustic impedance, ib puag ncig ruaj khov, thiab tsawg dielectric tas li, thiab lwm yam ntxwv tshwj xeeb tso cai rau polyimide airgel thiab ultrafiltration membrane, hluav taws xob, mechanics thiab acoustics {} {4}
Polyimide airgel, source: polymer . com
Txhawm rau kom paub lub menned mars tsaws program hauv kev txhim kho cov ntaub ntawv kev tshawb fawb ntawm cov neeg siv hluav taws xob, thiab vim muaj cov ntaub ntawv dav dav ntawm cov ntawv thov Tso Tsheb Hlau Luam, Rov Ua Cov Ntaub Ntawv Ultralight thiab Chaw Nyob Hauv . multifunctional cov ntaub ntawv, thiab chaw nyob qhov chaw nyob.
Ntxiv nrog rau Aerospace teb, polyimide airgel cov ntaub ntawv hauv kev sib txuas lus hauv tshuab hluav taws xob thiab cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, thiab xaim hluav taws xob.
(9){{0 {}} polyimide-raws li cov composites
Cov Khoom Siv Hluav Taws Xob Hluav Taws Xob yog cov khoom siv hluav taws xob tshiab tom qab cov khoom siv hluav taws xob muaj ntau yam, thiab cov khoom siv tshuab hluav taws xob zoo nkauj, thiab cov khoom siv Dielectric, cov kuab tiv thaiv, et1 {., yog tam sim no yog qhov kub tshaj plaws ntawm cov khoom sib xyaw (hauv cov aviamiation (hauv teb thiab lwm thaj teb tau siv dav .
Tom qab ze li 40 xyoo ntawm kev loj hlob, polyimide high-based compinites tau txhim kho plaub tiam kev sib xyaw ua ke, kev siv ntsuas kub tau txhim kho rau lub sijhawm ntev ntawm 450 degree.
Tam sim no, Tuam Tshoj cov kev siv daim ntawv thov polyimide thiab kev tshawb fawb tseem tab tom tsim khoom, Avic muaj peev xwm ua tau los tsim cov khoom lag luam tshiab uas tau ua rau cov khoom lag luam tshiab {}}
Tsis tas li ntawd, nrog cov qhab nia tiav ntawm cov ntxaij kev lag luam carbon fiber ntau, los txeeb cov ntaub ntawv zoo tshaj plaws, los txeeb cov ntaub ntawv zoo tshaj plaws, los txeeb cov khoom siv siab tshaj plaws, los txeeb cov khoom lag luam siab tshaj plaws
3,Qhov xaus
polyimide yuav luag txhua yam ntawm cov khoom siv polymer, suav nrog cov khoom ua haujlwm siab, ua npuas ncauj, cov khoom siv roj ntsha, cov khoom siv tshuaj ntsuab, cov khoom siv insulix, cov ntaub ntawv ua haujlwm, sib xyaw thiab yog li ntawm {1} {1} {1}.
Kev ua yeeb yam ntawm polyimide yog xav tau ntawm nws cov qauv tshuaj, kev txhim kho los ntawm kev txhim kho ntawm monomers, thiab tseem ceeb los ntawm kev txhim kho ntawm cov tub sab tshiab thiab tsis muaj kev cuam tshuam los ntawm kev txhim kho ntawm cov tub sab tshiab, thiab cov khoom siv dianyrride yog kev txhim kho ntau yam tshiab ntawm polyimide yog qhov tsim nyog los xyuas kom meej tias kev txo qis ntawm monomer tus nqi yog tus yuam sij los txo polyimide {}}
Raws li polyimide cov ntaub ntawv hauv aerospace, tub rog, cov khoom siv hluav taws xob ntau dua ntawm cov khoom lag luam hauv tsev, tab sis peb cov khoom siv txawv teb chaws Kev txhim kho ntawm polyimide-cuam tshuam cov khoom lag luam yog qhov nrawm heev thiab muaj txoj kev mus ntev!
Tau qhov twg los "Tuam Tshoj Suav Teb Composites Kev Koom Tes Txog Kev Lag Luam Lub Vev Xaib" {.