cov khoom

Nyob rau hauv ob lub siab ntawm "electrification" thiab "lightweighting" niaj hnub no'kev lag luam tsheb, txhua gram uas txuag tau txhais tau tias muaj kev siv hluav taws xob ntev dua thiab txo kev siv hluav taws xob. Txawm hais tias muaj kev saib xyuas ntau rau cov khoom loj xws li cov qauv lub cev thiab cov roj teeb, ib feem uas zoo li tsis tseem ceeb tab sis tseem ceeb heev tab tom hloov pauv cov khoom siv.—lub rooj zaum tsheb.

Cov thav rooj zaum ib txwm muaj feem ntau yog ua los ntawm cov hlau uas tau muab luam tawm thiab vuam. Txawm hais tias lawv ua tau raws li qhov yuav tsum tau ua kom muaj zog, lawv hnyav thiab muaj kev ywj pheej tsim qauv tsawg. Nrog rau kev nce qib sai ntawm cov yas engineering, cov polypropylene fiber ntev uas muaj zog (LGF/PP) sai sai hloov hlau ua cov khoom siv zoo tshaj plaws rau cov thav rooj zaum tiam tom ntej.

 Ntev Fiberglass PP Yog Dab Tsi?

Tsis zoo li cov khoom siv iav luv luv uas muaj zog (qhov twg qhov ntev ntawm cov fiber feem ntau tsawg dua 1 hli), cov iav ntev uas muaj zog polypropylene yog hais txog cov khoom sib xyaw uas muaj cov iav fibers nrog qhov ntev ntawm 10–25 hli. Cov qauv tshwj xeeb no muab kev nce qib zoo hauv kev ua tau zoo ntawm cov khoom siv:

Peb-seem fiber network: Thaum lub sijhawm txhaj tshuaj molding, cov iav fibers ntev sib txuas ua ke hauv cov polymer matrix, tsim cov pob txha peb-seem. Txawm tias thaum cov khoom siv hauv paus mos ntawm qhov kub siab, lub fiber network pab tswj cov duab.—ib qho xwm txheej hu ua "cov nyhuv ntawm cov pob txha fiber."

Cov fiber ntau seem ntev: Cov fiber uas seem hauv qhov tiav lawm ntev dua li cov ntaub ntawv ib txwm muaj. Qhov no yog qhov zais cia tseem ceeb tom qab nws lub zog siab.

Vim Li Cas Nws Thiaj Zoo Rau Cov Rooj Zaum?

Rau cov chaw tsim khoom tsheb, cov rooj zaum tsis yog tsuas yog hais txog kev nplij siab xwb—lawv yog cov khoom siv kev nyab xeeb. Yog tias muaj kev sib tsoo, lub rooj zaum yuav tsum tiv taus lub zog cuam tshuam loj heev thaum tswj hwm kev ruaj khov ntawm cov qauv. LGF / PP daws tau zoo kawg nkaus qhov kev tsis sib haum xeeb ntawm kev tawv thiab kev tawv hauv cov yas engineering:

Lub zog siab thiab tiv taus kev cuam tshuam: LGF/PP muaj lub zog tensile zoo heev thiab modulus flexural, nrog rau kev tiv taus kev cuam tshuam3–Siab dua 5 npaug ntawm cov khoom siv iav luv luv uas muaj zog. Thaum muaj kev sib tsoo, nws nqus tau lub zog tseem ceeb los ntawm kev hloov pauv yam tsis muaj kev tawg yooj yim, yog li ntawd tiv thaiv cov neeg nyob hauv.

Kev tiv thaiv kev nkag mus zoo heev: Cov rooj zaum yog cov khoom uas muaj lub nra hnyav uas yuav raug kev ntxhov siab ntev. Txawm hais tias cov yas ib txwm muaj feem yuav deform thaum lub nra hnyav tas mus li, LGF / PP tswj hwm qhov ruaj khov txawm tias ntawm 100°C dhau lub sijhawm ntev, tiv taus kev hloov pauv mus tas li.

Txo qhov hnyav tseem ceeb: Piv nrog cov qauv hlau ib txwm muaj, cov thav rooj zaum LGF / PP ua tiav 20–Txo qhov hnyav 30%, pab ncaj qha rau kev siv roj tsawg dua lossis txuas ntxiv qhov ntau ntawm EV.

Kev ywj pheej tsim: LGF/PP tso cai rau kev sib koom ua ke ntawm ntau yam hlau rau hauv ib qho khoom txhaj tshuaj uas nyuaj, ua rau kev sib dhos yooj yim thiab txo cov nqi cuab yeej (kwv yees li 20% ntawm cov rau cov pwm hlau stamping).

 Cov Kev Siv Hauv Ntiaj Teb Tiag

Cov ntaub ntawv no tsis yog lub tswv yim hauv chav kuaj mob—nws twb tau raug lees paub hauv cov tsheb tsim tawm ntau lawm.

1: Nws lub plhaub rooj zaum siv cov iav fiber-reinforced thermoplastic composite, ua tiav qhov ruaj khov heev thaum txuag tau ze li ntawm 800 grams piv rau cov qauv hlau.

2Nws lub qhov rooj pem hauv ntej thiab cov khoom siv ntawm lub rooj zaum siv LGF/PP los ua kom muaj kev sib koom ua ke zoo, nrog rau kev ua tau zoo qis ntawm qhov kub siab.

 Kev Saib Xyuas Txog Kev Siv Tshuab

Raws li qhov sib txawv ntawm "hloov hlau nrog yas" tob zuj zus, LGF/PP tsis txwv rau cov tsheb uas muaj cav sib xyaw sab hauv lawm. Hauv ntu tsheb fais fab tshiab, txhua kilogram ntawm kev txo qhov hnyav suav nrog. Nrog rau cov txheej txheem txhaj tshuaj molding zoo tshaj plaws (piv txwv li, tswj qhov kub yaj ntawm 190°C thiab 250°C), lub zog cuam tshuam ntawm cov khoom siv tuaj yeem nce ntxiv ntau dua 50%.

Ntxiv rau, kev nce qib hauv cov thev naus laus zis uas tsis muaj ntxhiab tsw thiab VOC tsawg ua rau LGF/PP zoo rau ib puag ncig, ua tau raws li cov qauv huab cua hauv chav tsev nruj.

 Xaus lus

Cov thav rooj zaum hauv tsheb tab tom hloov pauv ntawm cov pob txha hlau mus rau cov polymers molded. Nrog nws qhov kev sib xyaw ua ke zoo kawg nkaus ntawm lub zog siab, kev tawv siab, thiab qhov hnyav tsawg, polypropylene iav ntev-fiber-reinforced tau dhau los ua cov khoom siv xaiv rau kev tsim lub rooj zaum tiam tom ntej. Nws tsis tsuas yog muab cov nqi khiav lag luam qis dua rau cov neeg siv khoom tab sis kuj muab cov engineers tshiab rau kev xav txog qhov chaw sab hauv tsheb. Hauv kev sib tw mus rau qhov sib dua, LGF / PP yog qhov tseeb ntawm cov neeg khiav ua ntej.