LCF PPS tuaj yeem cuam tshuam li cas?
Nyob rau hauv lub arena ntawm tshwj xeeb engineering yas, yog PEEK yog lub crown jewel, ces LCF PPS (ntev carbon fiber reinforced polyphenylene sulfide) yog lub hnyav armored combat guard. Nws qhov tseem ceeb yog nyob rau hauv kev hais txog ib qho kev tsis sib haum xeeb tshaj plaws nyob rau niaj hnub no kev tsim khoom siab -kawg: yuav ua li cas kom ua tiav ob qho "hnyav hnyav" thiab "siab structural rigidity" nyob rau hauv siab heev - kub thiab corrosive ib puag ncig.
Vim li cas peb thiaj xav tau "ntev" carbon fibers?
Thaum cov kws tsim qauv tsim lub thermal tswj module ntawm lub tsheb tshiab lub zog los yog lub fuselage thav duab ntawm lub tsheb tsis muaj neeg tsav dav hlau, lawv feem ntau ntsib teeb meem hauv kev xaiv cov khoom: hlau hnyav dhau lawm thiab muaj kev tiv thaiv corrosion tsis zoo, thaum luv luv - fiber ntau plastics yog lub teeb yuag tab sis nws nquag ua rau qaug zog tawg nyob rau hauv siab -frequency vibrations thiab muaj kev cuam tshuam tsis zoo.
Qhov tshwm sim ntawm LCF PPS tsis yog kev sib xyaw ua ke ntawm kev ua tau zoo; es, nws sawv cev rau qhov kev hloov pauv tseem ceeb hauv kev ua haujlwm.
Nyob rau hauv lub mechanical qualitative hloov ntawm "rub tawm" mus rau "breaking"Nyob rau qib microscopic quab yuam, luv carbon fibers (SCF) zoo li pob zeb hauv pob zeb. Thaum raug quab yuam ntau dhau, cov fibers zoo li raug rub tawm ntawm lub matrix, uas ua rau tawg tawg. Thaum LCF (ntev carbon fibers) khaws qhov ntev tshaj 5 hli nyob rau hauv cov khoom, lawv tsis yog cov koom haum ywj pheej, tab sis es tsis txhob cuam tshuam nrog ib leeg los tsim ib lub hauv paus network.
Anti-rheological "lub sij hawm-tso tseg"Hlau qaug zog, plastics creep. Tab sis nyob rau hauv ntev - lub sij hawm loads saum toj no 120 degree, LCF PPS yas granules qhia tau hais tias xav tsis thoob qhov seem stability. Cov carbon fibers ntev zoo li suav tsis txheeb "cov leeg nqaij", tuav ruaj khov rau PPS cov saw hlau molecular thiab inhibiting lawv cov yas deformation dhau sijhawm.
Qhov "point-to-point" hauv kev tsim khoom
Infiltration Art: Pultrusion txheej txheem
Tsis zoo li "ob chav ntsia hlau sib xyaw" ntawm cov khoom siv hloov kho zoo tib yam, LCF PPS yas pellet yuav tsum tau txais cov tshuab yaj infiltration pultrusion.
Kev sib tw:Lub yaj fluidity ntawm PPS yog qhov kub thiab txias, thiab cov pa roj carbon fiber ntau (Tow) yog tsim los ntawm ntau txhiab tus neeg filaments, uas yog tuab heev.
Technical Core:Tshwj xeeb infiltration nozzles yuav tsum tau tsim. Nyob rau hauv ib lub sij hawm luv luv, lub siab -viscosity PPS yuav tsum raug yuam kom nias rau hauv txhua tus neeg filament kom ua tiav ib qho -filament txheej. Yog tias qhov infiltration tsis tiav, yuav muaj qhov sib txawv ntawm cov fibers, thiab tom qab molding, lub interlayer shear zog yuav txo qis.
Kev sib haum xeeb ntawm kev txhaj tshuaj molding: Kev sib ntaus sib tua kom khaws ntev
Zoo pellets tsuas yog cov khoom semifinished, thiab qhov kawg kev ua tau zoo nyob ntawm cov txheej txheem txhaj tshuaj molding. Qhov no yog ib qho txawv tshaj plaw thiab siab - ua haujlwm zoo:
Screw xaiv:Cov pa siab -shear screws yuav tsum tau muab tso tseg thiab tshwj xeeb screws nrog qis compression piv thiab tob grooves yuav tsum tau xaiv. Lub yaj yuav tsum tau thawb mus rau hauv ib qho "maj mam".
Flow channel tsim:Txhua txoj cai - lub kaum sab xis khoov lossis rab koob- taw tes sprues yog "cov tshuab tawg" rau cov fibers ntev. Kev tsim pwm yuav tsum ua raws li lub hauv paus ntsiab lus ntawm "loj sprue, tag nrho tus ntoo khaub lig-sectional flow", txo cov neeg kho tshuab shearing ntawm fibers mus rau qhov loj tshaj plaws.
LCF PPS: Daim ntawv thov nyob rau hauv Battlefield
Daim ntawv thov logic ntawm LCF PPS yog qhov tseeb heev: nws tsuas yog tshwm nyob rau hauv qhov chaw uas zoo tib yam engineering plastics "tsis muaj sia nyob".
Scene 1: "Zoo tuag" ntawm tshuaj corrosion
Cov xwm txheej: Lub tshuab hluav taws xob twj tso kua mis impeller thiab vaj tse nyob rau hauv lub tsheb thermal tswj system.
Logic: Niaj hnub nimno coolant muaj zog permeability ntawm qhov kub thiab txias. Nylon (PA) absorbs dej, ua rau qhov nthuav dav thiab lub impeller tau daig; cov hlau yuav tsum tau kim los tiv thaiv -corrosion txheej. PPS yog inherently resistant rau hydrolysis thiab acid- puag, ua ke nrog lub siab rigidity ntawm LCF, tau dhau los ua tus thawj coj nyob rau hauv daim teb no.
Scene 2: Lub "Invisible Shield" tiv thaiv Electromagnetic cuam tshuam
Cov xwm txheej: millimeter-wave radar brackets, IGBT module casings.
Logic: Carbon fiber inherently yog tus neeg xyuas pib zoo. LCF PPS, thaum muab cov qauv kev txhawb nqa, ib txwm tsim ib qho kev sib txuas lus, tiv thaiv electromagnetic cuam tshuam (EMI). Piv rau "yas + conductive txheej" los yog "hlau stamping qhov chaw", nws ua tiav ib qho kev sib txuas ntawm cov qauv thiab kev ua haujlwm, txo cov nqi ntawm cov kab ke.
Thaum peb tshuaj xyuas LCF PPS compound resin, peb yuav tsum tsis txhob saib nws li "cov yas muaj zog dua". Nws sawv cev rau ib kauj ruam tom ntej hauv kev tshawb fawb ntawm cov ntaub ntawv tshawb fawb ntawm bionics - mimicking kev sib koom ua ke ntawm cov pob txha (ntev fibers) thiab cov leeg (resin).
Rau kev lag luam kev lag luam, tus nqi ntawm LCF PPS yas granules tsis dag nyob rau hauv tus nqi ib kilogram ntawm cov khoom, tab sis nyob rau hauv lub systematic nqi txo peev xwm nws muab rau designers, xws li "hloov hlau nrog yas, integrating Cheebtsam, thiab tshem tawm theem nrab ua". Nrog rau kev loj hlob ntawm cov khoom siv hluav taws xob siv dua tshiab, yav tom ntej, LCF PPS cov khoom sib xyaw yuav tsim cov txheej txheem kev lag luam tshiab hauv ntau thaj chaw, los ntawm cov neeg siv khoom siv hluav taws xob mus rau qis - qhov siab ntawm kev lag luam.
