Sab hauv zoo nkauj heev, lub hau ci ntsa iab, lub suab nrov nrov ... txhua yam qhia txog kev khav theeb ntawm cov tsheb kis las super, zoo li nyob deb ntawm lub neej ntawm cov neeg ib txwm, tab sis koj puas paub? Qhov tseeb, sab hauv thiab lub hau ntawm cov tsheb no yog ua los ntawm cov khoom fiberglass.
Ntxiv rau cov tsheb kim heev, cov neeg ib txwm tsav tsheb thiab cov tsheb thauj khoom uas thauj khoom, txhua yam yog ua los ntawm cov iav fiber. Nws tuaj yeem hais tias daim ntawv thov kev ua haujlwm ntawm cov iav fiber tuaj yeem ntev mus tas li.
Tam sim no, cov khoom siv sib xyaw ua ke ntawm cov iav fiber ntau tuaj yeem muab faib ua ob hom: thermoplastic thiab thermosetting. Cov txheej txheem tsim khoom ntawm ob qho no sib txawv, thiab kev siv kuj sib txawv. Cov khoom siv iav fiber ntau thermosetting rau LFT feem ntau yog siv rau cov khoom siv sab hauv tsheb, xws li cov khoom siv vaj huam sib luag, cov thawv log tsheb seem, cov khoom siv pem hauv ntej thiab lwm yam khoom siv tsis yog tsheb; cov khoom siv fiberglass thermoset SMC feem ntau yog siv rau cov kaus mom tsheb, cov thawv, thiab cov roj tank separators. Cov npog thermal thiab lwm yam khoom siv hauv tsheb.
Nrog rau kev txhim kho ntawm kev lag luam tsheb thiab kev txhawb nqa kev txuag hluav taws xob thiab kev tiv thaiv ib puag ncig, cov tsheb sib dua tau dhau los ua qhov sib txawv. Kev siv roj ntawm lub tsheb feem ntau nyob ntawm qhov hloov chaw ntawm lub cav thiab tag nrho qhov hnyav ntawm lub tsheb. Raws li lub hauv paus ntawm kev tswj hwm qhov zoo tag nrho, kev ua tau zoo thiab tus nqi ntawm lub tsheb, kev txo qhov hnyav ntawm lub tsheb tuaj yeem ua rau lub zog tso zis thiab kev tswj hwm zoo dua, txo kev siv roj, thiab txo cov pa phem. Cov kev tshawb fawb tau qhia tias rau txhua 10% txo qhov hnyav ntawm lub tsheb, kev siv roj tuaj yeem txo tau 6-8%. Hloov cov hlau ib txwm muaj nrog cov iav fiber tuaj yeem txo qhov hnyav ntawm lub tsheb tau zoo heev.
Cov khoom SMC yog ib feem tseem ceeb ntawm cov khoom siv hauv tsheb. Yuav ua li cas kom txo qhov hnyav ntawm lub tsheb los ntawm kev txhim kho nws cov kev ua tau zoo yog qhov teeb meem ceev rau cov tuam txhab tsim tsheb kom daws tau.
Tam sim no, txoj kev lees paub tshaj plaws hauv kev lag luam yog hloov cov khoom siv ib txwm muaj nrog cov hlaws iav khoob, yog li txo qhov ceev ntawm daim ntawv, kom ua tiav qhov cuam tshuam ntawm kev txo qhov hnyav ntawm lub tsheb. Tab sis qhov teeb meem uas qhov no coj los yog tias cov khoom siv kho tshuab ntawm cov khoom kuj txo qis. Yog li ntawd, txhawm rau kom ntseeg tau tias cov khoom siv kho tshuab nyob rau hauv qhov xwm txheej qis-density, cov iav fibers tuaj yeem siv los muab cov xwm txheej kho tshuab siab dua. Cov khoom SMC hais los saum toj no yog tsim los ntawm cov iav fiber, filler thiab resin.
Cov khoom siv iav fiber rau SMC nrog lub zog siab thiab cov khoom nto. Cov khoom tuaj yeem ua tau raws li qhov xav tau ntawm cov khoom siv kho tshuab thiab A-level nto tib lub sijhawm, thiab tsim nyog rau kev tsim cov khoom siv tsheb thiab cov khoom siv qauv. Piv nrog cov neeg sib tw hauv kev lag luam hauv qab tib yam mob, kev ua tau zoo ntawm lub tshuab tag nrho tau nce 20%, uas muab kev daws teeb meem rau qhov teeb meem ntawm kev puas tsuaj ntawm SMC qis.
Ib yam li cov tsheb kis las super uas zoo nkauj heev, qhov yuav tsum tau muaj zog thiab zoo li qub yog siab dua li cov tsheb ib txwm muaj, tshwj xeeb tshaj yog rau qhov zoo li qub thiab du. SMC siv cov iav fiber 456 ua hom khoom iav fiber tshiab rau cov khoom siv hauv tsheb, uas tuaj yeem ua tau raws li tus neeg siv khoom A-level nto, uas yog, qhov yuav tsum tau ua ntawm daim iav nto, thiab nws qhov ci ntsa iab txaus kom phim qhov chaw ntawm cov supercars.
Ntxiv rau cov khoom SMC, cov khoom siv thermoplastic uas muaj fiber ntau kuj tseem tuaj yeem ua lub luag haujlwm tseem ceeb hauv kev hloov hlau nrog yas hauv tsheb. Cov xov LFT ua tau zoo 362H feem ntau yog siv rau hauv cov khoom siv hauv tsheb xws li daim iav saib tom qab, cov ntaub thaiv suab nrov, cov khoom siv vaj huam sib luag, thiab lwm yam.
Cov thev naus laus zis LFT muaj cov kev xav tau siab rau kev ua cov xov paj, tshwj xeeb tshaj yog qhov tsis kam hnav ntawm cov xov paj. Qhov kev ntxhib plaub hau ib kilogram ntawm 362H yog qis heev. Dr. Fan Jiashu ntawm Chaw Tshawb Fawb Khoom thiab Kev Tsim Khoom tau lees paub qhov no los ntawm kev sib piv sim. Thaum nws teeb tsa qhov av noo rau 50%, qhov kev ntxhib plaub hau ib kilogram ntawm 362H yog qis dua li ntawm cov khoom sib piv; thaum qhov av noo nce mus txog 75%, qhov kev ntxhib plaub hau ntawm txhua yam khoom nce ntxiv, uas yog txiav txim siab los ntawm cov yam ntxwv ntawm tus neeg sawv cev ntawm cov xov paj nws tus kheej. Tab sis qhov zoo kawg nkaus yog tias thaum qhov av noo yog 75%, qhov kev ntxhib plaub hau ntawm 362H tseem qis dua li ntawm pawg tswj hwm, uas qhia tau tias qhov kev tiv thaiv zoo heev ntawm 362H.
Tsis yog li ntawd xwb, cov khoom siv kho tshuab ntawm 362H kuj muaj zog thiab tawv heev. Nrog nws, lub tsheb yuav tiv taus kev sib tsoo ntau dua thaum muaj kev cuam tshuam loj heev. Nws yuav tsis "nkig" zoo li hlau, thiab yuav tsis yooj yim "raug mob". Qhov no zoo ib yam li qhov chaw ntawm 362H. Kev kho mob tshwj xeeb ntawm tus neeg sawv cev yog qhov tsis sib cais. Kev txhim kho ntawm kev tsim khoom siab thiab kev ua tau zoo LFT-txhim kho cov xov paj ncaj qha rau PP 362H ntxiv txhim kho cov khoom tsim ntawm cov xov paj ncaj qha rau LFT. Nws cov kev sib kis siab thiab lubricity siab ua tau raws li cov neeg siv khoom xav tau rau kev ua tiav.
Lub sijhawm tshaj tawm: Lub Rau Hli-17-2021
