Rau ntau tshaj 30 xyoo, polyimides tau siv nyob rau hauv ntau ntawm ntau yam ntawm micro-txoj kab uas hla kev siv. Txawm li cas los xij, qee qhov kev hloov tshiab hauv kev ua kom muaj zog no thiab lwm cov khoom siv kho mob tau siv hauv cov txheej txheem kho mob tsawg dua uas siv tau cov cuab yeej kho mob tsawg heev. Kab lus no yuav tshawb txog 6 qhov kev ua kom tshiab rau cov khoom siv kho mob microing, txhua yam uas tuaj yeem ua tau los ntawm zaj duab xis casting tsim kev lag luam.
Cov Kev Siv Cov Ntawv Siv rau Polyimimide Tubing
· Kev ua haujlwm sheaths rau kev nthuav dav tus kheej
PackBoon Pallens Lumens
· Txaus siab Lumens rau Atherecy li
· Siv cov ntaub ntawv rau cov lumens uas muaj catheter filitir
· Me taub ntawm txoj kab uas muaj teeb meem lossis cov kis las kis las
· Kub lossis Gamma-Ray Resistant Tube App
· Thov yuav tsum muaj lub zog loj, torque hloov chaw, lossis kem txhav
Zaj duab xis Casting txheej txheem pib los ntawm kev thov ib qho txheej txheej ua kua roj polyimide yog siv los kho cov khoom lag luam.
Qhov kev ua tiav no ua rau nws yooj yim heev kom haum cov raj.Dov khoom siv rau hauv lub raj dej nyias nyias tuaj yeem tso tawm sab nraud ntawm lub raj dej sab nraud.}}}}}} 003 " stability dua li hlab ua los ntawm extrusion.
1. Raws li dispete ntev ntawm polyimide-coated tubing
Rau cov ntawv thov uas yuav tsum muaj qhov ntev ntawm tubular Polyimide txheej, tshwj xeeb tsim polyimide tubing muaj kev daws teeb meem tau. Qhov kev ua tsis tiav ntawm polymerized tubing tuaj yeem txo qhov loj me los ntawm cua sov.
Piv txwv li, xav txog tus mob siab uas yuav tsum tau ua ib nrab nrog polyimide. Qhov ntev ntawm thermoset tubing tuaj yeem tsim kom haum rau feem ntawm cov hypoleide kom tau coated. Qhov no thermofile polyimide tuaj yeem tom qab ntawd yog swb rau cov hypotube zoo li lub tes tsho. Thaum raug rau kev sib txawv ntawm cov ntaub ntawv kub, cov raj cees paub thiab shrinks me ntsis, zoo npog qhov twg ntawm hypoleide nrog polyimide.
Lub tes tsho polyimide-coated-uas shrinks los ntawm {2}}} {} {}} {}}. Nws kuj tseem tuaj yeem siv los ntxiv cov lus qhia rau cov khoom uas tau machined kom muaj qhov profile tsis sib xws. Txawm li cas los xij, nws yog ib qho tseem ceeb kom nco ntsoov tias muaj qhov tseem ceeb txwv: Phab ntsa yuav tsum yog yam tsawg 0.002 ntiv tes tuab.
2. Nyob rau hauv micro-txoj kab nrog cov dej thiab cov kua tsheb ua kua
Polyimide yog lub thickosetting polymer. Qhov no txhais tau hais tias ib zaug tsim, nws yog cov khoom-nws yuav tsis rov qab lossis reantow thaum raug rau qhov chaw siab. Nws tseem ruaj khov thiab tuaj yeem tiv taus cov xeb thiab cov kua txob acidic uas yuav nquag ua rau muaj lwm yam nyuaj lossis tsis muaj lwm yam nyuaj. Tsis tas li ntawd, polyimide tubing txhawb nqa nrog stainless hlau briswb tuaj yeem wrowstand siab siab.
Cov kev xav tau zoo no ua rau polyimide txoj kev xaiv ib qho kev xaiv tsim nyog rau siv nyob rau hauv kab uas thauj cov kua dej lossis lwm yam kua. Cov ntaub ntawv xws li cov roj ntxhia, cov ntxhiab hydrocarbons, thiab polyalcs glycols uas muaj kev nyab xeeb uas tsis muaj kev poob siab nyob hauv ib puag ncig high-ucel. Piv txwv li, ntau cov cuab yeej siv hluav taws xob micro-robotic ntawm cov khoom siv hydraulic.
3. Raws li conduse rau kev sib pauv cua sov lossis txias tshuab
Thermal conductivity yog qhov tseem ceeb rau cov khoom siv tubing siv hauv kev sib pauv cua sov lossis txias tshuab. Raws li cov khoom siv ntom ntom uas ua kom kub ntawm tus nqi ntawm 0. 471 W \/ MIST है yog qhov kev xaiv zoo tshaj plaws rau cov ntawv thov. Nws tseem yog qhov tsim nyog rau kev sib txuas nrog cov nplais thiab cov nplais, uas yog qhov uas cov thermal conductivity ntawm lub tubing yuav txuas tau dhau qhov txheem muaj peev xwm ntawm polyimide.
Thaum polyimide nyob hauv cov kua, lub xeev dav hlau, nws yog ib qho yooj yim ntxiv rau cov ntaub ntawv pov thawj los txhim kho cov haujlwm. Hauv qhov no, cov ntaub ntawv xws li ceramic lossis graphite hmoov tuaj yeem raug ntxiv rau qib thermal conductivity ntawm 70% mus rau 90%.
Piv txwv li, lub polyimide composite yog qhov zoo rau kev phais cov txheej txheem, qhov twg cua sov uas tsis tas yuav tsum tau kho cov ntaub so ntswg. Vim tias polyimide tuaj yeem tsim nrog cov phab ntsa nyias nyias thiab cov tub luam me me, nws tseem tuaj yeem siv cov tshuab hluav taws xob me me.
4. Nyob rau hauv electromagnetic tiv thaiv Coaxial cables
Catheter-raws cov ntawv thov ultrasound feem ntau cia siab rau micro-diamereter coaxial cable. Vim tias polyimide yooj yim rau kev sib txuas, cov cable no tuaj yeem tau txais txiaj ntsig los ntawm kev siv polyimide los muab cov ntaub thaiv hluav taws xob.
Nyob rau hauv ntau txoj kev uas graphip hmoov ntxiv rau cov kev cog lus polymer, xws li cov khoom siv hluav taws xob, xws li cov khoom siv hluav taws xob lossis tooj liab tau sib xyaw nrog cov kua, lub xeev xim. Thaum kho tau, lub raj raj yuav ua raws li lub tshuab hluav taws xob hluav taws xob rau sab hauv.
5. Tsim Multilumen Shafts
Kev sib txuas ntau ntau txoj hlua khi hniav micro-txoj kab uas hla hauv ib tus ncej muaj ntau yam tsiaj muaj ntau yam muaj peev xwm coj tau ntau yam ntawm ntau cov peev txheej polyimide. Piv txwv li, tus ncej ntau Lumen tuaj yeem suav nrog cov raj hluav taws xob thiab cov raj uas tau muab nrog saib los ntawm x-raycesten los ntawm x-raycopaque rau saib los ntawm x-rab-raim lossis fluoroscopy, ua rau tus ncej dual-functional.
Ob peb lub voj voos micro-txoj hlab hlab ua los ntawm zaj duab xis casteting txheej txheem kuj tseem tuaj yeem ua ke los tsim ib qho ncej nrog ntau qhov lumens.
Nylon lossis PEBAX® sab nraud txheej txheem tuaj yeem siv rau cov hlab tau koom nrog; Cov txheej txheem sab nraud yog tom qab ntawd fused ua ke rau txoj hlua khi ib leeg. Nyob rau hauv ntau catheter cov ntawv thov, muaj ntau hom Lumen Shafts uas tau yooj yim combine ntau txoj hlab polyimide tuaj yeem siv nyob rau hauv qhov chaw raug kaw ntau yam.
6. Raws li cov polymeric koob lossis tho cov cuab yeej
Nrog lub zog tensile ntawm 2 0 {{{{{{{{{ Tubes nrog phab ntsa thicknesses ntawm 0.002 mus rau 0.004 nti tau txiav los ntawm ntau hom nqaij, ua haujlwm ua ib qho kev xaiv polymer rau Connonsonal tuaj.
Lub ntsiab
Polyimide yog cov neeg polymer ntau yam nrog cov khoom siv uas xav tau uas ua haujlwm tau zoo hauv ntau qhov sib txawv ntawm cov ntawv xov xwm micro. Ua tsaug rau ib zaj duab xis tshiab pov Tubing, cov kws kho mob tuaj yeem siv tau ntawm lub tsev loj, ruaj khov rau hauv txoj kev uas tsis pom tseeb thaum xub thawj siab ib ce.
