Pyromellitic dianhydride(PMDA) yog cov khoom siv sib xyaw ua ke uas ua lub luag haujlwm tseem ceeb hauv kev txhim kho cov khoom siv hluav taws xob tiv thaiv hluav taws xob polyimide, zaj duab xis, thiab txheej txheej.Nws cov khoom tshwj xeeb ua rau nws yog ib qho khoom siv tsis tseem ceeb nyob rau hauv ntau yam kev ua haujlwm siab, los ntawm cov ntaub ntawv hloov pauv hloov pauv mus rau enameled hlau rwb thaiv tsev.Cia peb saib ze dua ntawm PMDA lub peev xwm thiab nws qhov cuam tshuam rau kev lag luam.
PMDA yog ib qho tseem ceeb nruab nrab ntawm kev tsim cov yeeb yaj kiab polyimide, uas paub txog lawv cov thermal stability zoo thiab txhua yam muaj zog.Cov yeeb yaj kiab no tau siv dav hauv cov ntawv luam tawm yooj yim thiab tuaj yeem xa hluav taws xob xaim hluav taws xob seamlessly thaum tiv taus kub.Tsis tas li ntawd, PMDA-raws li polyimide films yog cov khoom ntawm tus kheej-adhesive tapes, txheej txheem tseem ceeb rau kev sib dhos ntawm cov khoom siv hluav taws xob.
Tsis tas li ntawd, PMDA pab tsim cov polyimide-based composites, txhim kho lawv cov thermal thiab mechanical zog.Cov khoom sib xyaw no muaj kev xav tau siab rau lawv lub peev xwm los tiv thaiv kev ua haujlwm hnyav, ua rau lawv zoo tagnrho rau kev siv aerospace, automotive thiab electronics.PMDA-raws li polyimide composites muaj kev tiv thaiv kub zoo thiab qhov ruaj khov, ua rau lawv xaiv thawj zaug hauv ib puag ncig uas cov khoom siv tsis txaus.
Hauv thaj chaw ntawm enameled hlau rwb thaiv tsev, PMDA plays lub luag haujlwm tseem ceeb hauv kev ua kom lub neej ntev thiab kev ntseeg siab ntawm cov tshuab hluav taws xob.Los ntawm kev sib xyaw PMDA rau hauv cov ntaub ntawv rwb thaiv tsev, cov tuam txhab tsim khoom tuaj yeem tsim cov xov hlau uas tuaj yeem tiv taus qhov kub thiab txias ib puag ncig.Qhov no yog qhov tshwj xeeb tshaj yog muaj txiaj ntsig rau kev lag luam xws li kev tsim hluav taws xob, qhov xav tau rau kev ua haujlwm siab rwb thaiv tsev yog qhov tseem ceeb.
Tsis tas li ntawd, PMDA pab txhawb kev txhim kho cov txheej txheem zoo nrog cov thermal tsis kam thiab tshuaj lom neeg inertness.Cov txheej txheem no muaj ntau yam kev siv, los ntawm kev tiv thaiv cov cuab yeej siv hauv qhov chaw kub kub kom muab cov khoom siv ruaj khov rau cov neeg siv khoom siv hluav taws xob.PMDA-raws li txheej txheej muaj peev xwm tswj tau lawv txoj kev ncaj ncees nyob rau hauv siab, ua rau lawv cov khoom muaj nqis thoob plaws ntau yam kev lag luam.
Raws li kev lag luam txuas ntxiv thawb cov ciam teb ntawm kev ua tau zoo thiab kev ntseeg siab, kev thov rau PMDA yuav tsum nce siab.Nws ua lub luag haujlwm tsis sib xws hauv kev tsim cov khoom siv siab heev uas ua haujlwm hauv cov xwm txheej tsis zoo.PMDA qhov kev ua tau zoo hauv kev txhim kho cov thermal thiab mechanical zog ntawm cov khoom polyimide qhia nws qhov tseem ceeb hauv kev tsav tsheb tshiab thoob plaws ntau qhov kev lag luam.
Hauv cov ntsiab lus, pyromellitic dianhydride (PMDA) yog lub hauv paus rau kev txhim kho cov ntaub ntawv muaj txiaj ntsig zoo nrog kev ua haujlwm zoo thermal thiab kev ua haujlwm zoo.Nws qhov kev cuam tshuam yog xav tau thoob plaws kev lag luam xws li hluav taws xob mus rau aerospace, qhov xav tau rau cov kev daws teeb meem ruaj khov thiab ruaj khov yog tsis sib tham.Raws li kev tshawb fawb thiab kev txhim kho txuas ntxiv mus, PMDA xav tias yuav txuas ntxiv mus ua ib qho kev txhawb nqa rau kev tsim kho tshiab thiab ua rau yav tom ntej ntawm cov ntawv thov kev ua haujlwm siab.
Post lub sij hawm: Jun-25-2024