Daim Ntawv Thov ntawm Ultra-Short Carbon Fiber

Ua ib tug tswv cuab tseem ceeb ntawm cov khoom siv sib xyaw ua ke, cov roj carbon fiber luv luv, nrog nws cov yam ntxwv tshwj xeeb, tau ua rau muaj kev saib xyuas dav dav hauv ntau qhov chaw lag luam thiab thev naus laus zis. Nws muab cov kev daws teeb meem tshiab rau kev ua tau zoo ntawm cov ntaub ntawv, thiab kev nkag siab tob txog nws cov thev naus laus zis thiab cov txheej txheem siv yog qhov tseem ceeb los tsav kev txhim kho ntawm cov lag luam cuam tshuam.

Cov duab me me ntawm cov pa roj carbon luv luv

Feem ntau, qhov ntev ntawm cov carbon fiber luv luv yog nruab nrab ntawm 0.1 - 5 hli, thiab lawv qhov ceev yog qis ntawm 1.7 - 2g / cm³. Nrog qhov ceev qis ntawm 1.7 - 2.2g / cm³, lub zog tensile ntawm 3000 - 7000MPa thiab modulus ntawm elasticity ntawm 200 - 700GPa, cov khoom siv kho tshuab zoo heev no ua lub hauv paus rau nws siv hauv cov qauv thauj khoom. Tsis tas li ntawd, nws muaj kev tiv taus kub zoo heev, thiab tuaj yeem tiv taus kub siab tshaj 2000 ° C hauv huab cua tsis-oxidizing.

Daim Ntawv Thov Technology thiab Txheej Txheem ntawm Ultra-luv Carbon Fiber hauv Aerospace Field

Hauv thaj chaw aerospace, cov roj carbon fiber luv luv feem ntau yog siv los txhawb nqacov roj hmabCov khoom sib xyaw ua ke matrix. Qhov tseem ceeb ntawm cov thev naus laus zis yog ua kom cov carbon fiber sib npaug hauv cov resin matrix. Piv txwv li, kev siv cov thev naus laus zis ultrasonic dispersion tuaj yeem ua rau muaj kev sib sau ua ke ntawm cov carbon fiber, yog li ntawd cov coefficient dispersion ncav cuag ntau dua 90%, ua kom ntseeg tau tias cov khoom siv sib xws. Tib lub sijhawm, kev siv cov thev naus laus zis kho qhov chaw fiber, xws li kev sivtus neeg sawv cev txuaskev kho mob, tuaj yeem ua raucov roj carbon fiberthiab lub zog sib txuas ntawm cov resin interface nce ntxiv 30% - 50%.

Hauv kev tsim cov tis dav hlau thiab lwm yam khoom siv, kev siv cov txheej txheem kub nias lub tank. Ua ntej tshaj plaws, cov carbon fiber luv luv thiab cov resin sib xyaw nrog ib feem pua ​​​​​​ua los ntawm prepreg, txheej rau hauv lub tank kub nias. Tom qab ntawd nws tau kho thiab pwm ntawm qhov kub ntawm 120 - 180 ° C thiab lub siab ntawm 0.5 - 1.5MPa. Cov txheej txheem no tuaj yeem tso tawm cov pa npuas hauv cov khoom sib xyaw kom ntseeg tau tias cov khoom muaj qhov ntom thiab kev ua tau zoo.

Kev Siv Tshuab thiab Cov Txheej Txheem rau Kev Siv Cov Carbon Fiber Luv Luv hauv Kev Lag Luam Tsheb

Thaum siv cov roj carbon fiber luv luv rau cov khoom siv hauv tsheb, qhov kev tsom mus rau kev txhim kho nws qhov sib xws nrog cov khoom siv hauv paus. Los ntawm kev ntxiv cov khoom sib xws tshwj xeeb, qhov sib txuas ntawm cov roj carbon fiber thiab cov khoom siv hauv paus (piv txwv lipolypropylene, thiab lwm yam) tuaj yeem nce ntxiv li ntawm 40%. Tib lub sijhawm, txhawm rau txhim kho nws cov kev ua tau zoo hauv cov chaw muaj kev ntxhov siab nyuaj, cov thev naus laus zis tsim qauv fiber yog siv los kho qhov kev taw qhia ntawm kev sib dhos fiber raws li kev taw qhia ntawm kev ntxhov siab ntawm qhov.

Cov txheej txheem txhaj tshuaj molding feem ntau siv rau hauv kev tsim cov khoom xws li lub kaus mom tsheb. Cov roj carbon fiber luv luv raug sib xyaw nrog cov yas me me thiab tom qab ntawd txhaj rau hauv qhov pwm los ntawm qhov kub thiab siab. Qhov kub txhaj tshuaj feem ntau yog 200 - 280 ℃, qhov siab txhaj tshuaj yog 50 - 150 MPa. Cov txheej txheem no tuaj yeem ua tiav kev txhaj tshuaj sai ntawm cov khoom sib xyaw ua ke, thiab tuaj yeem ua kom muaj kev faib tawm ntawm cov roj carbon fiber hauv cov khoom.

Kev Siv Tshuab thiab Txheej Txheem ntawm Daim Ntawv Thov Carbon Fiber Ultra-luv hauv Electronics Field

Hauv kev siv hluav taws xob cua sov dissipation, kev siv cov thermal conductivity ntawm ultra-luv carbon fibers yog qhov tseem ceeb. Los ntawm kev ua kom zoo dua qhov degree graphitization ntawm carbon fiber, nws cov thermal conductivity tuaj yeem nce mus txog ntau dua 1000W / (mK). Lub caij no, kom ntseeg tau tias nws sib cuag zoo nrog cov khoom siv hluav taws xob, cov txheej txheem metallization nto, xws li tshuaj nickel plating, tuaj yeem txo qhov tsis kam ntawm carbon fiber ntau dua 80%.

Cov txheej txheem hmoov metallurgy siv tau rau hauv kev tsim cov khoom siv cua sov CPU hauv computer. Cov carbon fiber luv luv yog sib xyaw nrog cov hmoov hlau (piv txwv li hmoov tooj liab) thiab sintered nyob rau hauv qhov kub thiab siab. Qhov kub sintering feem ntau yog 500 - 900 ° C thiab qhov siab yog 20 - 50 MPa. Cov txheej txheem no ua rau cov carbon fiber tsim cov channel cua sov zoo nrog cov hlau thiab txhim kho kev ua haujlwm ntawm cov cua sov.

Los ntawm aerospace mus rau kev lag luam automotive mus rau electronics, nrog rau kev tsim kho tshiab ntawm thev naus laus zis thiab kev ua kom zoo dua qub, ultra-luvcov roj carbon fiberyuav ci ntsa iab hauv ntau qhov chaw, txhaj tshuaj muaj zog dua rau kev tshawb fawb niaj hnub thiab thev naus laus zis thiab kev txhim kho kev lag luam.