Infusing ib tug loj cua turbine hniav nrog epoxy resin yuav tsum tau cov cob kom sov txaus kom ntws yooj yim mus rau hauv lub fiber lev, tsis tau kub li ntawd nws pib harden ntxov ntxov. Lub PTFE immersion rhaub nyob rau hauv lub lauj kaub cob yuav tsum muab maj mam, zoo ib yam, thiab tseem ceeb heev, hlau - dawb cua sov kom tsis txhob catalyzing pliaj tshwm sim. Nyob rau hauv lub tshuab nqus tsev-Assisted Resin Transfer Moulding (VARTM) txheej txheem, qhov zoo ntawm qhov kawg sib xyaw yog nyob ntawm qhov kub thiab txias zoo li ntawm lub tshuab nqus tsev nws tus kheej.
Lub luag haujlwm ntawm Preheating hauv VARTM
Hauv VARTM, cov resin tau tuav hauv lub lauj kaub noj, qee zaum hauv lub tshuab nqus tsev, thiab tom qab ntawd kos rau hauv pwm uas muaj cov khoom siv fiber ntau. Preheating cov resin txo nws cov viscosity, cia nws ntub tawm fibers sai thiab tag. Cov hom phiaj kub kub yog li ntawm 30℃mus rau 60 degree, nyob ntawm qhov system resin. Txawm li cas los xij, ntau cov thermoset resins-tshwj xeeb tshaj yog epoxies, polyesters, thiab vinyl esters- muaj cov catalysts los yog hardeners uas muaj rhiab heev rau ob qho tib si kub thiab tshuaj lom neeg.
Yog vim li cas PTFE rhaub yog nyiam rau Resin Preheating
Yog tias siv cov pa roj carbon monoxide- sheathed immersion rhaub (tooj liab, stainless hlau, lossis Incoloy) siv, cov hlau ions xws li tooj liab lossis hlau tuaj yeem yaj rau hauv cov resin. Cov ions no ua raws li qhov tsis xav tau catalysts, ua kom cov tshuaj tiv thaiv exothermic. Qhov tshwm sim yog lub lauj kaub lub neej luv luv, ua ntej ntxov ntxov, thiab muaj peev xwm khiav tawm ntawm qhov hluav taws xob hauv lub lauj kaub cob. APTFE rhaub VARTM resin preheatingdaws zam qhov no kiag li. Polytetrafluoroethylene (PTFE) yog tshuaj inert thiab tso tawm tsis muaj catalytic hlau ions. Qhov no muab cov txheej txheem engineers ib qho kev kwv yees, ruaj khov ua haujlwm qhov rais rau infusion.
Tsawg Watt Ceev Tiv thaiv Localized Gelling
Ib qho tseem ceeb tsim feature ntawm PTFE immersion heaters rau resin preheating yog tsawg watt ceev. Tus qauv watt ceev rau daim ntawv thov no tsawg dua lossis sib npaug li 0.5 W / cm². Nyob rau theem no, cov cua sov tau kis mus rau thaj tsam loj, yog li cov resin tam sim ntawd nyob ib sab ntawm lub tshuab rhaub cua sov tsis overheat. Localized overheating yuav txwv tsis pub cov catalyzed resin gel rau hauv tawv, insoluble me ntsis. Cov pob tawv tawv no tuaj yeem tawg tawm, txhaws cov kab infusion, thiab rhuav tshem cov pwm sau. Low watt density ensures uniform bulk resin heating without thermal degradation.
Huv si, Tsis yog -Ntoo Nto rau Batch Hloov
Qhov du, tsis yog -stick nto ntawm lub PTFE rhaub tiv thaiv cov resin los ntawm adhering thiab curing rau lub rhaub. Nruab nrab ntawm cov kev hloov pauv lossis pwm khiav, lub tshuab cua sov tuaj yeem ntxuav tau sai nrog cov kuab tshuaj yooj yim so lossis tev- tawm ntawm cov yeeb yaj kiab seem. Qhov no txo qis lub sijhawm poob thiab tshem tawm cov ntoo khaub lig-kev sib kis ntawm cov txheej txheem sib txawv.
Txheej txheem tswv yim: Siv lub Ramp -Soak Temperature Controller
Ib tus qauv ntawm -off controller tuaj yeem ua rau thermal overshoot, uas yog txaus ntshai nrog catalyzed resins. Lub tshuab ntsuas kub tsis siv neeg nrog lub qhov rooj -soak profile yog pom zoo. Qhov kev ua haujlwm ramp maj mam nce cov resin kub (xws li, 1-2℃ib feeb) los ntawm ambient mus rau lub hom phiaj infusion kub. Lub soak ces tuav qhov kub tsis tu ncua. Txoj hauv kev no maj mam zam kev poob siab thermal thiab tiv thaiv cov chaw kub hauv zos uas tuaj yeem ua rau exotherm ntxov ntxov. Hauv kev tsim cov khoom sib xyaw, ob peb degrees siab dhau lawm thiab cov resin dhau los ua ib qho khoom thaiv hauv lub lauj kaub -ib qho xwm txheej kim thiab txaus ntshai.
Tswj Kev Tiv Thaiv Exothermic Reaction Risks
Epoxy kho yog exothermic; Thaum cov tshuaj tiv thaiv pib, nws tsim nws tus kheej cua sov. Lub tshuab tso cua sov yuav tsum tsis txhob ntxiv lub zog ntau dhau uas tuaj yeem pib qhov kev tawm tsam khiav tawm. Vim li no, PTFE cov cua sov rau resin preheating feem ntau nruab nrog overtemperature tiv thaiv, xws li ib tug cais thermocouple los yog ib tug thermal fuse. Tus maub los kuj tseem tuaj yeem kaw cov cua sov tuaj yeem yog tias cov resin kub tshaj qhov txwv tsis pub muaj kev nyab xeeb (feem ntau 70-80℃rau feem ntau epoxy). Kev xaiv cov cua sov thiab cov tswv yim tswj qhov kub thiab txias yog li sib cais.
Xaus: Precision Cua sov rau Flawless Composites
PTFE immersion heaters muab kev ceev faj, tsis yog - paug cua sov qhov chaw uas tso cai rau VARTM los tsim flawless, npuas - dawb composites. Los ntawm kev tshem tawm cov hlau ion catalysis, tuav qis watt ntom ntom kom tiv thaiv gelling, thiab muab cov khoom tsis huv uas tsis yog - nplaum nplaum, lawv hais txog peb qhov kev pheej hmoo thermal hauv resin preheating. Hauv VARTM molding, kev tswj qhov kub thiab txias yog qhov tseem ceeb raws li lub tshuab nqus tsev nws tus kheej-tsis muaj ob qho tib si, cov khoom sib xyaw yuav raug kev txom nyem los ntawm qhov tsis muaj dab tsi, qhov chaw qhuav, lossis kev kho tsis tiav. Lub tshuab cua sov PTFE tau teev tseg kom zoo, ua ke nrog lub ramp -soak maub los, ua kom rov ua dua, siab - cov khoom zoo.
